diff options
Diffstat (limited to 'src/udev')
| -rw-r--r-- | src/udev/Makefile.am | 30 | ||||
| -rw-r--r-- | src/udev/cgroup-util.c | 1256 | ||||
| -rw-r--r-- | src/udev/cgroup-util.h | 74 | ||||
| -rw-r--r-- | src/udev/conf-files.c | 153 | ||||
| -rw-r--r-- | src/udev/conf-files.h | 31 | ||||
| -rw-r--r-- | src/udev/def.h | 35 | ||||
| -rw-r--r-- | src/udev/exit-status.c | 192 | ||||
| -rw-r--r-- | src/udev/exit-status.h | 88 | ||||
| -rw-r--r-- | src/udev/hashmap.c | 835 | ||||
| -rw-r--r-- | src/udev/hashmap.h | 98 | ||||
| -rw-r--r-- | src/udev/ioprio.h | 57 | ||||
| -rw-r--r-- | src/udev/log.c | 865 | ||||
| -rw-r--r-- | src/udev/log.h | 137 | ||||
| -rw-r--r-- | src/udev/macro.h | 242 | ||||
| -rw-r--r-- | src/udev/missing.h | 247 | ||||
| -rw-r--r-- | src/udev/path-util.c | 419 | ||||
| -rw-r--r-- | src/udev/path-util.h | 45 | ||||
| -rw-r--r-- | src/udev/set.c | 130 | ||||
| -rw-r--r-- | src/udev/set.h | 71 | ||||
| -rw-r--r-- | src/udev/socket-util.h | 99 | ||||
| -rw-r--r-- | src/udev/sparse-endian.h | 87 | ||||
| -rw-r--r-- | src/udev/strbuf.c | 176 | ||||
| -rw-r--r-- | src/udev/strbuf.h | 56 | ||||
| -rw-r--r-- | src/udev/strv.c | 750 | ||||
| -rw-r--r-- | src/udev/strv.h | 84 | ||||
| -rw-r--r-- | src/udev/util.c | 6255 | ||||
| -rw-r--r-- | src/udev/util.h | 616 |
27 files changed, 2 insertions, 13126 deletions
diff --git a/src/udev/Makefile.am b/src/udev/Makefile.am index 8f4eafe46e..b65048bf91 100644 --- a/src/udev/Makefile.am +++ b/src/udev/Makefile.am @@ -52,44 +52,18 @@ libudev_core_la_SOURCES = \ udev-builtin-net_id.c \ udev-builtin-path_id.c \ udev-builtin-usb_id.c \ - conf-files.c \ - cgroup-util.c \ dev-setup.c \ - exit-status.c \ - hashmap.c \ label.c \ - log.c \ mkdir.c \ - path-util.c \ sd-daemon.c \ - sd-login.c \ - set.c \ - strbuf.c \ - strv.c \ - util.c + sd-login.c noinst_HEADERS = \ - cgroup-util.h \ - conf-files.h \ - def.h \ dev-setup.h \ - exit-status.h \ - hashmap.h \ - ioprio.h \ label.h \ - log.h \ - macro.h \ - missing.h \ mkdir.h \ - path-util.h \ sd-daemon.h \ - sd-login.h \ - set.h \ - socket-util.h \ - sparse-endian.h \ - strbuf.h \ - strv.h \ - util.h + sd-login.h include_HEADERS = \ udev.h diff --git a/src/udev/cgroup-util.c b/src/udev/cgroup-util.c deleted file mode 100644 index b0d378de5a..0000000000 --- a/src/udev/cgroup-util.c +++ /dev/null @@ -1,1256 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <unistd.h> -#include <signal.h> -#include <string.h> -#include <stdlib.h> -#include <dirent.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <ftw.h> - -#include "cgroup-util.h" -#include "log.h" -#include "set.h" -#include "macro.h" -#include "util.h" -#include "path-util.h" -#include "strv.h" - -int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) { - char *fs; - int r; - FILE *f; - - assert(path); - assert(_f); - - r = cg_get_path(controller, path, "cgroup.procs", &fs); - if (r < 0) - return r; - - f = fopen(fs, "re"); - free(fs); - - if (!f) - return -errno; - - *_f = f; - return 0; -} - -int cg_enumerate_tasks(const char *controller, const char *path, FILE **_f) { - char *fs; - int r; - FILE *f; - - assert(path); - assert(_f); - - r = cg_get_path(controller, path, "tasks", &fs); - if (r < 0) - return r; - - f = fopen(fs, "re"); - free(fs); - - if (!f) - return -errno; - - *_f = f; - return 0; -} - -int cg_read_pid(FILE *f, pid_t *_pid) { - unsigned long ul; - - /* Note that the cgroup.procs might contain duplicates! See - * cgroups.txt for details. */ - - errno = 0; - if (fscanf(f, "%lu", &ul) != 1) { - - if (feof(f)) - return 0; - - return errno ? -errno : -EIO; - } - - if (ul <= 0) - return -EIO; - - *_pid = (pid_t) ul; - return 1; -} - -int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d) { - char *fs; - int r; - DIR *d; - - assert(path); - assert(_d); - - /* This is not recursive! */ - - r = cg_get_path(controller, path, NULL, &fs); - if (r < 0) - return r; - - d = opendir(fs); - free(fs); - - if (!d) - return -errno; - - *_d = d; - return 0; -} - -int cg_read_subgroup(DIR *d, char **fn) { - struct dirent *de; - - assert(d); - - errno = 0; - while ((de = readdir(d))) { - char *b; - - if (de->d_type != DT_DIR) - continue; - - if (streq(de->d_name, ".") || - streq(de->d_name, "..")) - continue; - - if (!(b = strdup(de->d_name))) - return -ENOMEM; - - *fn = b; - return 1; - } - - if (errno) - return -errno; - - return 0; -} - -int cg_rmdir(const char *controller, const char *path, bool honour_sticky) { - char *p; - int r; - - r = cg_get_path(controller, path, NULL, &p); - if (r < 0) - return r; - - if (honour_sticky) { - char *tasks; - - /* If the sticky bit is set don't remove the directory */ - - tasks = strappend(p, "/tasks"); - if (!tasks) { - free(p); - return -ENOMEM; - } - - r = file_is_priv_sticky(tasks); - free(tasks); - - if (r > 0) { - free(p); - return 0; - } - } - - r = rmdir(p); - free(p); - - return (r < 0 && errno != ENOENT) ? -errno : 0; -} - -int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s) { - bool done = false; - int r, ret = 0; - pid_t my_pid; - FILE *f = NULL; - Set *allocated_set = NULL; - - assert(controller); - assert(path); - assert(sig >= 0); - - /* This goes through the tasks list and kills them all. This - * is repeated until no further processes are added to the - * tasks list, to properly handle forking processes */ - - if (!s) - if (!(s = allocated_set = set_new(trivial_hash_func, trivial_compare_func))) - return -ENOMEM; - - my_pid = getpid(); - - do { - pid_t pid = 0; - done = true; - - if ((r = cg_enumerate_processes(controller, path, &f)) < 0) { - if (ret >= 0 && r != -ENOENT) - ret = r; - - goto finish; - } - - while ((r = cg_read_pid(f, &pid)) > 0) { - - if (pid == my_pid && ignore_self) - continue; - - if (set_get(s, LONG_TO_PTR(pid)) == LONG_TO_PTR(pid)) - continue; - - /* If we haven't killed this process yet, kill - * it */ - if (kill(pid, sig) < 0) { - if (ret >= 0 && errno != ESRCH) - ret = -errno; - } else if (ret == 0) { - - if (sigcont) - kill(pid, SIGCONT); - - ret = 1; - } - - done = false; - - if ((r = set_put(s, LONG_TO_PTR(pid))) < 0) { - if (ret >= 0) - ret = r; - - goto finish; - } - } - - if (r < 0) { - if (ret >= 0) - ret = r; - - goto finish; - } - - fclose(f); - f = NULL; - - /* To avoid racing against processes which fork - * quicker than we can kill them we repeat this until - * no new pids need to be killed. */ - - } while (!done); - -finish: - if (allocated_set) - set_free(allocated_set); - - if (f) - fclose(f); - - return ret; -} - -int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool rem, Set *s) { - int r, ret = 0; - DIR *d = NULL; - char *fn; - Set *allocated_set = NULL; - - assert(path); - assert(controller); - assert(sig >= 0); - - if (!s) - if (!(s = allocated_set = set_new(trivial_hash_func, trivial_compare_func))) - return -ENOMEM; - - ret = cg_kill(controller, path, sig, sigcont, ignore_self, s); - - if ((r = cg_enumerate_subgroups(controller, path, &d)) < 0) { - if (ret >= 0 && r != -ENOENT) - ret = r; - - goto finish; - } - - while ((r = cg_read_subgroup(d, &fn)) > 0) { - char *p = NULL; - - r = asprintf(&p, "%s/%s", path, fn); - free(fn); - - if (r < 0) { - if (ret >= 0) - ret = -ENOMEM; - - goto finish; - } - - r = cg_kill_recursive(controller, p, sig, sigcont, ignore_self, rem, s); - free(p); - - if (r != 0 && ret >= 0) - ret = r; - } - - if (r < 0 && ret >= 0) - ret = r; - - if (rem) - if ((r = cg_rmdir(controller, path, true)) < 0) { - if (ret >= 0 && - r != -ENOENT && - r != -EBUSY) - ret = r; - } - -finish: - if (d) - closedir(d); - - if (allocated_set) - set_free(allocated_set); - - return ret; -} - -int cg_kill_recursive_and_wait(const char *controller, const char *path, bool rem) { - unsigned i; - - assert(path); - assert(controller); - - /* This safely kills all processes; first it sends a SIGTERM, - * then checks 8 times after 200ms whether the group is now - * empty, then kills everything that is left with SIGKILL and - * finally checks 5 times after 200ms each whether the group - * is finally empty. */ - - for (i = 0; i < 15; i++) { - int sig, r; - - if (i <= 0) - sig = SIGTERM; - else if (i == 9) - sig = SIGKILL; - else - sig = 0; - - if ((r = cg_kill_recursive(controller, path, sig, true, true, rem, NULL)) <= 0) - return r; - - usleep(200 * USEC_PER_MSEC); - } - - return 0; -} - -int cg_migrate(const char *controller, const char *from, const char *to, bool ignore_self) { - bool done = false; - Set *s; - int r, ret = 0; - pid_t my_pid; - FILE *f = NULL; - - assert(controller); - assert(from); - assert(to); - - if (!(s = set_new(trivial_hash_func, trivial_compare_func))) - return -ENOMEM; - - my_pid = getpid(); - - do { - pid_t pid = 0; - done = true; - - if ((r = cg_enumerate_tasks(controller, from, &f)) < 0) { - if (ret >= 0 && r != -ENOENT) - ret = r; - - goto finish; - } - - while ((r = cg_read_pid(f, &pid)) > 0) { - - /* This might do weird stuff if we aren't a - * single-threaded program. However, we - * luckily know we are not */ - if (pid == my_pid && ignore_self) - continue; - - if (set_get(s, LONG_TO_PTR(pid)) == LONG_TO_PTR(pid)) - continue; - - if ((r = cg_attach(controller, to, pid)) < 0) { - if (ret >= 0 && r != -ESRCH) - ret = r; - } else if (ret == 0) - ret = 1; - - done = false; - - if ((r = set_put(s, LONG_TO_PTR(pid))) < 0) { - if (ret >= 0) - ret = r; - - goto finish; - } - } - - if (r < 0) { - if (ret >= 0) - ret = r; - - goto finish; - } - - fclose(f); - f = NULL; - - } while (!done); - -finish: - set_free(s); - - if (f) - fclose(f); - - return ret; -} - -int cg_migrate_recursive(const char *controller, const char *from, const char *to, bool ignore_self, bool rem) { - int r, ret = 0; - DIR *d = NULL; - char *fn; - - assert(controller); - assert(from); - assert(to); - - ret = cg_migrate(controller, from, to, ignore_self); - - if ((r = cg_enumerate_subgroups(controller, from, &d)) < 0) { - if (ret >= 0 && r != -ENOENT) - ret = r; - goto finish; - } - - while ((r = cg_read_subgroup(d, &fn)) > 0) { - char *p = NULL; - - r = asprintf(&p, "%s/%s", from, fn); - free(fn); - - if (r < 0) { - if (ret >= 0) - ret = -ENOMEM; - - goto finish; - } - - r = cg_migrate_recursive(controller, p, to, ignore_self, rem); - free(p); - - if (r != 0 && ret >= 0) - ret = r; - } - - if (r < 0 && ret >= 0) - ret = r; - - if (rem) - if ((r = cg_rmdir(controller, from, true)) < 0) { - if (ret >= 0 && - r != -ENOENT && - r != -EBUSY) - ret = r; - } - -finish: - if (d) - closedir(d); - - return ret; -} - -static const char *normalize_controller(const char *controller) { - - if (streq(controller, SYSTEMD_CGROUP_CONTROLLER)) - return "systemd"; - else if (startswith(controller, "name=")) - return controller + 5; - else - return controller; -} - -static int join_path(const char *controller, const char *path, const char *suffix, char **fs) { - char *t = NULL; - - if (!(controller || path)) - return -EINVAL; - - if (controller) { - if (path && suffix) - t = strjoin("/sys/fs/cgroup/", controller, "/", path, "/", suffix, NULL); - else if (path) - t = strjoin("/sys/fs/cgroup/", controller, "/", path, NULL); - else if (suffix) - t = strjoin("/sys/fs/cgroup/", controller, "/", suffix, NULL); - else - t = strjoin("/sys/fs/cgroup/", controller, NULL); - } else { - if (path && suffix) - t = strjoin(path, "/", suffix, NULL); - else if (path) - t = strdup(path); - } - - if (!t) - return -ENOMEM; - - path_kill_slashes(t); - - *fs = t; - return 0; -} - -int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs) { - const char *p; - static __thread bool good = false; - - assert(fs); - - if (_unlikely_(!good)) { - int r; - - r = path_is_mount_point("/sys/fs/cgroup", false); - if (r <= 0) - return r < 0 ? r : -ENOENT; - - /* Cache this to save a few stat()s */ - good = true; - } - - p = controller ? normalize_controller(controller) : NULL; - return join_path(p, path, suffix, fs); -} - -static int check(const char *p) { - char *cc; - - assert(p); - - /* Check if this controller actually really exists */ - cc = alloca(sizeof("/sys/fs/cgroup/") + strlen(p)); - strcpy(stpcpy(cc, "/sys/fs/cgroup/"), p); - if (access(cc, F_OK) < 0) - return -errno; - - return 0; -} - -int cg_get_path_and_check(const char *controller, const char *path, const char *suffix, char **fs) { - const char *p; - int r; - - assert(controller); - assert(fs); - - if (isempty(controller)) - return -EINVAL; - - /* Normalize the controller syntax */ - p = normalize_controller(controller); - - /* Check if this controller actually really exists */ - r = check(p); - if (r < 0) - return r; - - return join_path(p, path, suffix, fs); -} - -static int trim_cb(const char *path, const struct stat *sb, int typeflag, struct FTW *ftwbuf) { - char *p; - bool is_sticky; - - if (typeflag != FTW_DP) - return 0; - - if (ftwbuf->level < 1) - return 0; - - p = strappend(path, "/tasks"); - if (!p) { - errno = ENOMEM; - return 1; - } - - is_sticky = file_is_priv_sticky(p) > 0; - free(p); - - if (is_sticky) - return 0; - - rmdir(path); - return 0; -} - -int cg_trim(const char *controller, const char *path, bool delete_root) { - char *fs; - int r = 0; - - assert(controller); - assert(path); - - r = cg_get_path(controller, path, NULL, &fs); - if (r < 0) - return r; - - errno = 0; - if (nftw(fs, trim_cb, 64, FTW_DEPTH|FTW_MOUNT|FTW_PHYS) < 0) - r = errno ? -errno : -EIO; - - if (delete_root) { - bool is_sticky; - char *p; - - p = strappend(fs, "/tasks"); - if (!p) { - free(fs); - return -ENOMEM; - } - - is_sticky = file_is_priv_sticky(p) > 0; - free(p); - - if (!is_sticky) - if (rmdir(fs) < 0 && errno != ENOENT) { - if (r == 0) - r = -errno; - } - } - - free(fs); - - return r; -} - -int cg_delete(const char *controller, const char *path) { - char *parent; - int r; - - assert(controller); - assert(path); - - if ((r = path_get_parent(path, &parent)) < 0) - return r; - - r = cg_migrate_recursive(controller, path, parent, false, true); - free(parent); - - return r == -ENOENT ? 0 : r; -} - -int cg_attach(const char *controller, const char *path, pid_t pid) { - char *fs; - int r; - char c[32]; - - assert(controller); - assert(path); - assert(pid >= 0); - - r = cg_get_path_and_check(controller, path, "tasks", &fs); - if (r < 0) - return r; - - if (pid == 0) - pid = getpid(); - - snprintf(c, sizeof(c), "%lu\n", (unsigned long) pid); - char_array_0(c); - - r = write_one_line_file(fs, c); - free(fs); - - return r; -} - -int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid) { - char *fs; - int r; - - assert(controller); - assert(path); - - if (mode != (mode_t) -1) - mode &= 0777; - - r = cg_get_path(controller, path, NULL, &fs); - if (r < 0) - return r; - - r = chmod_and_chown(fs, mode, uid, gid); - free(fs); - - return r; -} - -int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid, int sticky) { - char *fs; - int r; - - assert(controller); - assert(path); - - if (mode == (mode_t) -1 && uid == (uid_t) -1 && gid == (gid_t) -1 && sticky < 0) - return 0; - - if (mode != (mode_t) -1) - mode &= 0666; - - r = cg_get_path(controller, path, "tasks", &fs); - if (r < 0) - return r; - - if (sticky >= 0 && mode != (mode_t) -1) - /* Both mode and sticky param are passed */ - mode |= (sticky ? S_ISVTX : 0); - else if ((sticky >= 0 && mode == (mode_t) -1) || - (mode != (mode_t) -1 && sticky < 0)) { - struct stat st; - - /* Only one param is passed, hence read the current - * mode from the file itself */ - - r = lstat(fs, &st); - if (r < 0) { - free(fs); - return -errno; - } - - if (mode == (mode_t) -1) - /* No mode set, we just shall set the sticky bit */ - mode = (st.st_mode & ~S_ISVTX) | (sticky ? S_ISVTX : 0); - else - /* Only mode set, leave sticky bit untouched */ - mode = (st.st_mode & ~0777) | mode; - } - - r = chmod_and_chown(fs, mode, uid, gid); - free(fs); - - return r; -} - -int cg_get_by_pid(const char *controller, pid_t pid, char **path) { - int r; - char *p = NULL; - FILE *f; - char *fs; - size_t cs; - - assert(controller); - assert(path); - assert(pid >= 0); - - if (pid == 0) - pid = getpid(); - - if (asprintf(&fs, "/proc/%lu/cgroup", (unsigned long) pid) < 0) - return -ENOMEM; - - f = fopen(fs, "re"); - free(fs); - - if (!f) - return errno == ENOENT ? -ESRCH : -errno; - - cs = strlen(controller); - - while (!feof(f)) { - char line[LINE_MAX]; - char *l; - - errno = 0; - if (!(fgets(line, sizeof(line), f))) { - if (feof(f)) - break; - - r = errno ? -errno : -EIO; - goto finish; - } - - truncate_nl(line); - - if (!(l = strchr(line, ':'))) - continue; - - l++; - if (strncmp(l, controller, cs) != 0) - continue; - - if (l[cs] != ':') - continue; - - if (!(p = strdup(l + cs + 1))) { - r = -ENOMEM; - goto finish; - } - - *path = p; - r = 0; - goto finish; - } - - r = -ENOENT; - -finish: - fclose(f); - - return r; -} - -int cg_install_release_agent(const char *controller, const char *agent) { - char *fs = NULL, *contents = NULL, *line = NULL, *sc; - int r; - - assert(controller); - assert(agent); - - if ((r = cg_get_path(controller, NULL, "release_agent", &fs)) < 0) - return r; - - if ((r = read_one_line_file(fs, &contents)) < 0) - goto finish; - - sc = strstrip(contents); - if (sc[0] == 0) { - - if (asprintf(&line, "%s\n", agent) < 0) { - r = -ENOMEM; - goto finish; - } - - if ((r = write_one_line_file(fs, line)) < 0) - goto finish; - - } else if (!streq(sc, agent)) { - r = -EEXIST; - goto finish; - } - - free(fs); - fs = NULL; - if ((r = cg_get_path(controller, NULL, "notify_on_release", &fs)) < 0) - goto finish; - - free(contents); - contents = NULL; - if ((r = read_one_line_file(fs, &contents)) < 0) - goto finish; - - sc = strstrip(contents); - - if (streq(sc, "0")) { - if ((r = write_one_line_file(fs, "1\n")) < 0) - goto finish; - - r = 1; - } else if (!streq(sc, "1")) { - r = -EIO; - goto finish; - } else - r = 0; - -finish: - free(fs); - free(contents); - free(line); - - return r; -} - -int cg_is_empty(const char *controller, const char *path, bool ignore_self) { - pid_t pid = 0, self_pid; - int r; - FILE *f = NULL; - bool found = false; - - assert(path); - - r = cg_enumerate_tasks(controller, path, &f); - if (r < 0) - return r == -ENOENT ? 1 : r; - - self_pid = getpid(); - - while ((r = cg_read_pid(f, &pid)) > 0) { - - if (ignore_self && pid == self_pid) - continue; - - found = true; - break; - } - - fclose(f); - - if (r < 0) - return r; - - return !found; -} - -int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self) { - int r; - DIR *d = NULL; - char *fn; - - assert(path); - - r = cg_is_empty(controller, path, ignore_self); - if (r <= 0) - return r; - - r = cg_enumerate_subgroups(controller, path, &d); - if (r < 0) - return r == -ENOENT ? 1 : r; - - while ((r = cg_read_subgroup(d, &fn)) > 0) { - char *p = NULL; - - r = asprintf(&p, "%s/%s", path, fn); - free(fn); - - if (r < 0) { - r = -ENOMEM; - goto finish; - } - - r = cg_is_empty_recursive(controller, p, ignore_self); - free(p); - - if (r <= 0) - goto finish; - } - - if (r >= 0) - r = 1; - -finish: - - if (d) - closedir(d); - - return r; -} - -int cg_split_spec(const char *spec, char **controller, char **path) { - const char *e; - char *t = NULL, *u = NULL; - - assert(spec); - assert(controller || path); - - if (*spec == '/') { - - if (path) { - if (!(t = strdup(spec))) - return -ENOMEM; - - *path = t; - } - - if (controller) - *controller = NULL; - - return 0; - } - - if (!(e = strchr(spec, ':'))) { - - if (strchr(spec, '/') || spec[0] == 0) - return -EINVAL; - - if (controller) { - if (!(t = strdup(spec))) - return -ENOMEM; - - *controller = t; - } - - if (path) - *path = NULL; - - return 0; - } - - if (e[1] != '/' || - e == spec || - memchr(spec, '/', e-spec)) - return -EINVAL; - - if (controller) - if (!(t = strndup(spec, e-spec))) - return -ENOMEM; - - if (path) - if (!(u = strdup(e+1))) { - free(t); - return -ENOMEM; - } - - if (controller) - *controller = t; - - if (path) - *path = u; - - return 0; -} - -int cg_join_spec(const char *controller, const char *path, char **spec) { - assert(controller); - assert(path); - - if (!path_is_absolute(path) || - controller[0] == 0 || - strchr(controller, ':') || - strchr(controller, '/')) - return -EINVAL; - - if (asprintf(spec, "%s:%s", controller, path) < 0) - return -ENOMEM; - - return 0; -} - -int cg_fix_path(const char *path, char **result) { - char *t, *c, *p; - int r; - - assert(path); - assert(result); - - /* First check if it already is a filesystem path */ - if (path_startswith(path, "/sys/fs/cgroup") && - access(path, F_OK) >= 0) { - - t = strdup(path); - if (!t) - return -ENOMEM; - - *result = t; - return 0; - } - - /* Otherwise treat it as cg spec */ - r = cg_split_spec(path, &c, &p); - if (r < 0) - return r; - - r = cg_get_path(c ? c : SYSTEMD_CGROUP_CONTROLLER, p ? p : "/", NULL, result); - free(c); - free(p); - - return r; -} - -int cg_get_user_path(char **path) { - char *root, *p; - - assert(path); - - /* Figure out the place to put user cgroups below. We use the - * same as PID 1 has but with the "/system" suffix replaced by - * "/user" */ - - if (cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &root) < 0) - p = strdup("/user"); - else { - if (endswith(root, "/system")) - root[strlen(root) - 7] = 0; - else if (streq(root, "/")) - root[0] = 0; - - p = strappend(root, "/user"); - free(root); - } - - if (!p) - return -ENOMEM; - - *path = p; - return 0; -} - -char **cg_shorten_controllers(char **controllers) { - char **f, **t; - - controllers = strv_uniq(controllers); - - if (!controllers) - return controllers; - - for (f = controllers, t = controllers; *f; f++) { - int r; - const char *p; - - if (streq(*f, "systemd") || streq(*f, SYSTEMD_CGROUP_CONTROLLER)) { - free(*f); - continue; - } - - p = normalize_controller(*f); - - r = check(p); - if (r < 0) { - log_debug("Controller %s is not available, removing from controllers list.", *f); - free(*f); - continue; - } - - *(t++) = *f; - } - - *t = NULL; - return controllers; -} - -int cg_pid_get_cgroup(pid_t pid, char **root, char **cgroup) { - char *cg_process, *cg_init, *p; - int r; - - assert(pid >= 0); - - if (pid == 0) - pid = getpid(); - - r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &cg_process); - if (r < 0) - return r; - - r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &cg_init); - if (r < 0) { - free(cg_process); - return r; - } - - if (endswith(cg_init, "/system")) - cg_init[strlen(cg_init)-7] = 0; - else if (streq(cg_init, "/")) - cg_init[0] = 0; - - if (startswith(cg_process, cg_init)) - p = cg_process + strlen(cg_init); - else - p = cg_process; - - free(cg_init); - - if (cgroup) { - char* c; - - c = strdup(p); - if (!c) { - free(cg_process); - return -ENOMEM; - } - - *cgroup = c; - } - - if (root) { - cg_process[p-cg_process] = 0; - *root = cg_process; - } else - free(cg_process); - - return 0; -} - -int cg_pid_get_unit(pid_t pid, char **unit) { - int r; - char *cgroup, *p, *at, *b; - size_t k; - - assert(pid >= 0); - assert(unit); - - r = cg_pid_get_cgroup(pid, NULL, &cgroup); - if (r < 0) - return r; - - if (!startswith(cgroup, "/system/")) { - free(cgroup); - return -ENOENT; - } - - p = cgroup + 8; - k = strcspn(p, "/"); - - at = memchr(p, '@', k); - if (at && at[1] == '.') { - size_t j; - - /* This is a templated service */ - if (p[k] != '/') { - free(cgroup); - return -EIO; - } - - j = strcspn(p+k+1, "/"); - - b = malloc(k + j + 1); - - if (b) { - memcpy(b, p, at - p + 1); - memcpy(b + (at - p) + 1, p + k + 1, j); - memcpy(b + (at - p) + 1 + j, at + 1, k - (at - p) - 1); - b[k+j] = 0; - } - } else - b = strndup(p, k); - - free(cgroup); - - if (!b) - return -ENOMEM; - - *unit = b; - return 0; - -} diff --git a/src/udev/cgroup-util.h b/src/udev/cgroup-util.h deleted file mode 100644 index 697669deba..0000000000 --- a/src/udev/cgroup-util.h +++ /dev/null @@ -1,74 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <sys/types.h> -#include <stdio.h> -#include <dirent.h> - -#include "set.h" -#include "def.h" - -int cg_enumerate_processes(const char *controller, const char *path, FILE **_f); -int cg_enumerate_tasks(const char *controller, const char *path, FILE **_f); -int cg_read_pid(FILE *f, pid_t *_pid); - -int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d); -int cg_read_subgroup(DIR *d, char **fn); - -int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s); -int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool remove, Set *s); -int cg_kill_recursive_and_wait(const char *controller, const char *path, bool remove); - -int cg_migrate(const char *controller, const char *from, const char *to, bool ignore_self); -int cg_migrate_recursive(const char *controller, const char *from, const char *to, bool ignore_self, bool remove); - -int cg_split_spec(const char *spec, char **controller, char **path); -int cg_join_spec(const char *controller, const char *path, char **spec); -int cg_fix_path(const char *path, char **result); - -int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs); -int cg_get_path_and_check(const char *controller, const char *path, const char *suffix, char **fs); -int cg_get_by_pid(const char *controller, pid_t pid, char **path); - -int cg_trim(const char *controller, const char *path, bool delete_root); - -int cg_rmdir(const char *controller, const char *path, bool honour_sticky); -int cg_delete(const char *controller, const char *path); - -int cg_create(const char *controller, const char *path); -int cg_attach(const char *controller, const char *path, pid_t pid); -int cg_create_and_attach(const char *controller, const char *path, pid_t pid); - -int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid); -int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid, int sticky); - -int cg_install_release_agent(const char *controller, const char *agent); - -int cg_is_empty(const char *controller, const char *path, bool ignore_self); -int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self); - -int cg_get_user_path(char **path); -int cg_pid_get_cgroup(pid_t pid, char **root, char **cgroup); -int cg_pid_get_unit(pid_t pid, char **unit); - -char **cg_shorten_controllers(char **controllers); diff --git a/src/udev/conf-files.c b/src/udev/conf-files.c deleted file mode 100644 index 34b86293d3..0000000000 --- a/src/udev/conf-files.c +++ /dev/null @@ -1,153 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include <stdlib.h> -#include <stdio.h> -#include <sys/stat.h> -#include <dirent.h> - -#include "macro.h" -#include "util.h" -#include "missing.h" -#include "log.h" -#include "strv.h" -#include "path-util.h" -#include "hashmap.h" -#include "conf-files.h" - -static int files_add(Hashmap *h, const char *path, const char *suffix) { - DIR *dir; - int r = 0; - - dir = opendir(path); - if (!dir) { - if (errno == ENOENT) - return 0; - return -errno; - } - - for (;;) { - struct dirent *de; - union dirent_storage buf; - int k; - char *p; - - k = readdir_r(dir, &buf.de, &de); - if (k != 0) { - r = -k; - goto finish; - } - - if (!de) - break; - - if (!dirent_is_file_with_suffix(de, suffix)) - continue; - - if (asprintf(&p, "%s/%s", path, de->d_name) < 0) { - r = -ENOMEM; - goto finish; - } - - if (hashmap_put(h, path_get_file_name(p), p) <= 0) { - log_debug("Skip overridden file: %s.", p); - free(p); - } - } - -finish: - closedir(dir); - return r; -} - -static int base_cmp(const void *a, const void *b) { - const char *s1, *s2; - - s1 = *(char * const *)a; - s2 = *(char * const *)b; - return strcmp(path_get_file_name(s1), path_get_file_name(s2)); -} - -int conf_files_list_strv(char ***strv, const char *suffix, const char **dirs) { - Hashmap *fh = NULL; - char **files = NULL; - const char **p; - int r; - - assert(dirs); - - fh = hashmap_new(string_hash_func, string_compare_func); - if (!fh) { - r = -ENOMEM; - goto finish; - } - - STRV_FOREACH(p, dirs) { - r = files_add(fh, *p, suffix); - if (r < 0) - log_warning("Failed to search for files in %s: %s", - *p, strerror(-r)); - } - - files = hashmap_get_strv(fh); - if (files == NULL) { - log_error("Failed to compose list of files."); - r = -ENOMEM; - goto finish; - } - qsort(files, hashmap_size(fh), sizeof(char *), base_cmp); - r = 0; - -finish: - hashmap_free(fh); - *strv = files; - return r; -} - -int conf_files_list(char ***strv, const char *suffix, const char *dir, ...) { - char **dirs = NULL; - va_list ap; - int r; - - va_start(ap, dir); - dirs = strv_new_ap(dir, ap); - va_end(ap); - if (!dirs) { - r = -ENOMEM; - goto finish; - } - - if (!path_strv_canonicalize(dirs)) { - r = -ENOMEM; - goto finish; - } - strv_uniq(dirs); - - r = conf_files_list_strv(strv, suffix, (const char **)dirs); - -finish: - strv_free(dirs); - return r; -} diff --git a/src/udev/conf-files.h b/src/udev/conf-files.h deleted file mode 100644 index f37ee1f3db..0000000000 --- a/src/udev/conf-files.h +++ /dev/null @@ -1,31 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#ifndef fooconffileshfoo -#define fooconffileshfoo - -/*** - This file is part of systemd. - - Copyright 2010-2012 Lennart Poettering - Copyright 2010-2012 Kay Sievers - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "macro.h" - -int conf_files_list(char ***strv, const char *suffix, const char *dir, ...); -int conf_files_list_strv(char ***strv, const char *suffix, const char **dirs); - -#endif diff --git a/src/udev/def.h b/src/udev/def.h deleted file mode 100644 index 5ba170f965..0000000000 --- a/src/udev/def.h +++ /dev/null @@ -1,35 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "util.h" - -#define DEFAULT_TIMEOUT_USEC (90*USEC_PER_SEC) -#define DEFAULT_RESTART_USEC (100*USEC_PER_MSEC) -#define DEFAULT_CONFIRM_USEC (30*USEC_PER_SEC) - -#define DEFAULT_EXIT_USEC (5*USEC_PER_MINUTE) - -#define SYSTEMD_CGROUP_CONTROLLER "name=systemd" - -#define SIGNALS_CRASH_HANDLER SIGSEGV,SIGILL,SIGFPE,SIGBUS,SIGQUIT,SIGABRT -#define SIGNALS_IGNORE SIGKILL,SIGPIPE diff --git a/src/udev/exit-status.c b/src/udev/exit-status.c deleted file mode 100644 index 45131f2b2a..0000000000 --- a/src/udev/exit-status.c +++ /dev/null @@ -1,192 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdlib.h> -#include <sys/wait.h> - -#include "exit-status.h" -#include "set.h" -#include "macro.h" - -const char* exit_status_to_string(ExitStatus status, ExitStatusLevel level) { - - /* We cast to int here, so that -Wenum doesn't complain that - * EXIT_SUCCESS/EXIT_FAILURE aren't in the enum */ - - switch ((int) status) { - - case EXIT_SUCCESS: - return "SUCCESS"; - - case EXIT_FAILURE: - return "FAILURE"; - } - - - if (level == EXIT_STATUS_SYSTEMD || level == EXIT_STATUS_LSB) { - switch ((int) status) { - - case EXIT_CHDIR: - return "CHDIR"; - - case EXIT_NICE: - return "NICE"; - - case EXIT_FDS: - return "FDS"; - - case EXIT_EXEC: - return "EXEC"; - - case EXIT_MEMORY: - return "MEMORY"; - - case EXIT_LIMITS: - return "LIMITS"; - - case EXIT_OOM_ADJUST: - return "OOM_ADJUST"; - - case EXIT_SIGNAL_MASK: - return "SIGNAL_MASK"; - - case EXIT_STDIN: - return "STDIN"; - - case EXIT_STDOUT: - return "STDOUT"; - - case EXIT_CHROOT: - return "CHROOT"; - - case EXIT_IOPRIO: - return "IOPRIO"; - - case EXIT_TIMERSLACK: - return "TIMERSLACK"; - - case EXIT_SECUREBITS: - return "SECUREBITS"; - - case EXIT_SETSCHEDULER: - return "SETSCHEDULER"; - - case EXIT_CPUAFFINITY: - return "CPUAFFINITY"; - - case EXIT_GROUP: - return "GROUP"; - - case EXIT_USER: - return "USER"; - - case EXIT_CAPABILITIES: - return "CAPABILITIES"; - - case EXIT_CGROUP: - return "CGROUP"; - - case EXIT_SETSID: - return "SETSID"; - - case EXIT_CONFIRM: - return "CONFIRM"; - - case EXIT_STDERR: - return "STDERR"; - - case EXIT_TCPWRAP: - return "TCPWRAP"; - - case EXIT_PAM: - return "PAM"; - - case EXIT_NETWORK: - return "NETWORK"; - - case EXIT_NAMESPACE: - return "NAMESPACE"; - - case EXIT_NO_NEW_PRIVILEGES: - return "NO_NEW_PRIVILEGES"; - - case EXIT_SECCOMP: - return "SECCOMP"; - } - } - - if (level == EXIT_STATUS_LSB) { - switch ((int) status) { - - case EXIT_INVALIDARGUMENT: - return "INVALIDARGUMENT"; - - case EXIT_NOTIMPLEMENTED: - return "NOTIMPLEMENTED"; - - case EXIT_NOPERMISSION: - return "NOPERMISSION"; - - case EXIT_NOTINSTALLED: - return "NOTINSSTALLED"; - - case EXIT_NOTCONFIGURED: - return "NOTCONFIGURED"; - - case EXIT_NOTRUNNING: - return "NOTRUNNING"; - } - } - - return NULL; -} - - -bool is_clean_exit(int code, int status, ExitStatusSet *success_status) { - - if (code == CLD_EXITED) - return status == 0 || - (success_status && - set_contains(success_status->code, INT_TO_PTR(status))); - - /* If a daemon does not implement handlers for some of the - * signals that's not considered an unclean shutdown */ - if (code == CLD_KILLED) - return - status == SIGHUP || - status == SIGINT || - status == SIGTERM || - status == SIGPIPE || - (success_status && - set_contains(success_status->signal, INT_TO_PTR(status))); - - return false; -} - -bool is_clean_exit_lsb(int code, int status, ExitStatusSet *success_status) { - - if (is_clean_exit(code, status, success_status)) - return true; - - return - code == CLD_EXITED && - (status == EXIT_NOTINSTALLED || status == EXIT_NOTCONFIGURED); -} diff --git a/src/udev/exit-status.h b/src/udev/exit-status.h deleted file mode 100644 index d3b548fc96..0000000000 --- a/src/udev/exit-status.h +++ /dev/null @@ -1,88 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> -#include "set.h" -typedef enum ExitStatus { - /* EXIT_SUCCESS defined by libc */ - /* EXIT_FAILURE defined by libc */ - EXIT_INVALIDARGUMENT = 2, - EXIT_NOTIMPLEMENTED = 3, - EXIT_NOPERMISSION = 4, - EXIT_NOTINSTALLED = 5, - EXIT_NOTCONFIGURED = 6, - EXIT_NOTRUNNING = 7, - - /* The LSB suggests that error codes >= 200 are "reserved". We - * use them here under the assumption that they hence are - * unused by init scripts. - * - * http://refspecs.freestandards.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html */ - - EXIT_CHDIR = 200, - EXIT_NICE, - EXIT_FDS, - EXIT_EXEC, - EXIT_MEMORY, - EXIT_LIMITS, - EXIT_OOM_ADJUST, - EXIT_SIGNAL_MASK, - EXIT_STDIN, - EXIT_STDOUT, - EXIT_CHROOT, /* 210 */ - EXIT_IOPRIO, - EXIT_TIMERSLACK, - EXIT_SECUREBITS, - EXIT_SETSCHEDULER, - EXIT_CPUAFFINITY, - EXIT_GROUP, - EXIT_USER, - EXIT_CAPABILITIES, - EXIT_CGROUP, - EXIT_SETSID, /* 220 */ - EXIT_CONFIRM, - EXIT_STDERR, - EXIT_TCPWRAP, - EXIT_PAM, - EXIT_NETWORK, - EXIT_NAMESPACE, - EXIT_NO_NEW_PRIVILEGES, - EXIT_SECCOMP -} ExitStatus; - -typedef enum ExitStatusLevel { - EXIT_STATUS_MINIMAL, - EXIT_STATUS_SYSTEMD, - EXIT_STATUS_LSB, - EXIT_STATUS_FULL = EXIT_STATUS_LSB -} ExitStatusLevel; - -typedef struct ExitStatusSet { - Set *code; - Set *signal; -} ExitStatusSet; - -const char* exit_status_to_string(ExitStatus status, ExitStatusLevel level); - -bool is_clean_exit(int code, int status, ExitStatusSet *success_status); -bool is_clean_exit_lsb(int code, int status, ExitStatusSet *success_status); diff --git a/src/udev/hashmap.c b/src/udev/hashmap.c deleted file mode 100644 index dcfbb67228..0000000000 --- a/src/udev/hashmap.c +++ /dev/null @@ -1,835 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> - -#include "util.h" -#include "hashmap.h" -#include "macro.h" - -#define NBUCKETS 127 - -struct hashmap_entry { - const void *key; - void *value; - struct hashmap_entry *bucket_next, *bucket_previous; - struct hashmap_entry *iterate_next, *iterate_previous; -}; - -struct Hashmap { - hash_func_t hash_func; - compare_func_t compare_func; - - struct hashmap_entry *iterate_list_head, *iterate_list_tail; - unsigned n_entries; - - bool from_pool; -}; - -#define BY_HASH(h) ((struct hashmap_entry**) ((uint8_t*) (h) + ALIGN(sizeof(Hashmap)))) - -struct pool { - struct pool *next; - unsigned n_tiles; - unsigned n_used; -}; - -static struct pool *first_hashmap_pool = NULL; -static void *first_hashmap_tile = NULL; - -static struct pool *first_entry_pool = NULL; -static void *first_entry_tile = NULL; - -static void* allocate_tile(struct pool **first_pool, void **first_tile, size_t tile_size) { - unsigned i; - - if (*first_tile) { - void *r; - - r = *first_tile; - *first_tile = * (void**) (*first_tile); - return r; - } - - if (_unlikely_(!*first_pool) || _unlikely_((*first_pool)->n_used >= (*first_pool)->n_tiles)) { - unsigned n; - size_t size; - struct pool *p; - - n = *first_pool ? (*first_pool)->n_tiles : 0; - n = MAX(512U, n * 2); - size = PAGE_ALIGN(ALIGN(sizeof(struct pool)) + n*tile_size); - n = (size - ALIGN(sizeof(struct pool))) / tile_size; - - p = malloc(size); - if (!p) - return NULL; - - p->next = *first_pool; - p->n_tiles = n; - p->n_used = 0; - - *first_pool = p; - } - - i = (*first_pool)->n_used++; - - return ((uint8_t*) (*first_pool)) + ALIGN(sizeof(struct pool)) + i*tile_size; -} - -static void deallocate_tile(void **first_tile, void *p) { - * (void**) p = *first_tile; - *first_tile = p; -} - -#ifndef __OPTIMIZE__ - -static void drop_pool(struct pool *p) { - while (p) { - struct pool *n; - n = p->next; - free(p); - p = n; - } -} - -__attribute__((destructor)) static void cleanup_pool(void) { - /* Be nice to valgrind */ - - drop_pool(first_hashmap_pool); - drop_pool(first_entry_pool); -} - -#endif - -unsigned string_hash_func(const void *p) { - unsigned hash = 5381; - const signed char *c; - - /* DJB's hash function */ - - for (c = p; *c; c++) - hash = (hash << 5) + hash + (unsigned) *c; - - return hash; -} - -int string_compare_func(const void *a, const void *b) { - return strcmp(a, b); -} - -unsigned trivial_hash_func(const void *p) { - return PTR_TO_UINT(p); -} - -int trivial_compare_func(const void *a, const void *b) { - return a < b ? -1 : (a > b ? 1 : 0); -} - -unsigned uint64_hash_func(const void *p) { - uint64_t u; - - assert_cc(sizeof(uint64_t) == 2*sizeof(unsigned)); - - u = *(const uint64_t*) p; - - return (unsigned) ((u >> 32) ^ u); -} - -int uint64_compare_func(const void *_a, const void *_b) { - uint64_t a, b; - - a = *(const uint64_t*) _a; - b = *(const uint64_t*) _b; - - return a < b ? -1 : (a > b ? 1 : 0); -} - -Hashmap *hashmap_new(hash_func_t hash_func, compare_func_t compare_func) { - bool b; - Hashmap *h; - size_t size; - - b = is_main_thread(); - - size = ALIGN(sizeof(Hashmap)) + NBUCKETS * sizeof(struct hashmap_entry*); - - if (b) { - h = allocate_tile(&first_hashmap_pool, &first_hashmap_tile, size); - if (!h) - return NULL; - - memset(h, 0, size); - } else { - h = malloc0(size); - - if (!h) - return NULL; - } - - h->hash_func = hash_func ? hash_func : trivial_hash_func; - h->compare_func = compare_func ? compare_func : trivial_compare_func; - - h->n_entries = 0; - h->iterate_list_head = h->iterate_list_tail = NULL; - - h->from_pool = b; - - return h; -} - -int hashmap_ensure_allocated(Hashmap **h, hash_func_t hash_func, compare_func_t compare_func) { - assert(h); - - if (*h) - return 0; - - if (!(*h = hashmap_new(hash_func, compare_func))) - return -ENOMEM; - - return 0; -} - -static void link_entry(Hashmap *h, struct hashmap_entry *e, unsigned hash) { - assert(h); - assert(e); - - /* Insert into hash table */ - e->bucket_next = BY_HASH(h)[hash]; - e->bucket_previous = NULL; - if (BY_HASH(h)[hash]) - BY_HASH(h)[hash]->bucket_previous = e; - BY_HASH(h)[hash] = e; - - /* Insert into iteration list */ - e->iterate_previous = h->iterate_list_tail; - e->iterate_next = NULL; - if (h->iterate_list_tail) { - assert(h->iterate_list_head); - h->iterate_list_tail->iterate_next = e; - } else { - assert(!h->iterate_list_head); - h->iterate_list_head = e; - } - h->iterate_list_tail = e; - - h->n_entries++; - assert(h->n_entries >= 1); -} - -static void unlink_entry(Hashmap *h, struct hashmap_entry *e, unsigned hash) { - assert(h); - assert(e); - - /* Remove from iteration list */ - if (e->iterate_next) - e->iterate_next->iterate_previous = e->iterate_previous; - else - h->iterate_list_tail = e->iterate_previous; - - if (e->iterate_previous) - e->iterate_previous->iterate_next = e->iterate_next; - else - h->iterate_list_head = e->iterate_next; - - /* Remove from hash table bucket list */ - if (e->bucket_next) - e->bucket_next->bucket_previous = e->bucket_previous; - - if (e->bucket_previous) - e->bucket_previous->bucket_next = e->bucket_next; - else - BY_HASH(h)[hash] = e->bucket_next; - - assert(h->n_entries >= 1); - h->n_entries--; -} - -static void remove_entry(Hashmap *h, struct hashmap_entry *e) { - unsigned hash; - - assert(h); - assert(e); - - hash = h->hash_func(e->key) % NBUCKETS; - - unlink_entry(h, e, hash); - - if (h->from_pool) - deallocate_tile(&first_entry_tile, e); - else - free(e); -} - -void hashmap_free(Hashmap*h) { - - /* Free the hashmap, but nothing in it */ - - if (!h) - return; - - hashmap_clear(h); - - if (h->from_pool) - deallocate_tile(&first_hashmap_tile, h); - else - free(h); -} - -void hashmap_free_free(Hashmap *h) { - - /* Free the hashmap and all data objects in it, but not the - * keys */ - - if (!h) - return; - - hashmap_clear_free(h); - hashmap_free(h); -} - -void hashmap_clear(Hashmap *h) { - if (!h) - return; - - while (h->iterate_list_head) - remove_entry(h, h->iterate_list_head); -} - -void hashmap_clear_free(Hashmap *h) { - void *p; - - if (!h) - return; - - while ((p = hashmap_steal_first(h))) - free(p); -} - -static struct hashmap_entry *hash_scan(Hashmap *h, unsigned hash, const void *key) { - struct hashmap_entry *e; - assert(h); - assert(hash < NBUCKETS); - - for (e = BY_HASH(h)[hash]; e; e = e->bucket_next) - if (h->compare_func(e->key, key) == 0) - return e; - - return NULL; -} - -int hashmap_put(Hashmap *h, const void *key, void *value) { - struct hashmap_entry *e; - unsigned hash; - - assert(h); - - hash = h->hash_func(key) % NBUCKETS; - - e = hash_scan(h, hash, key); - if (e) { - - if (e->value == value) - return 0; - - return -EEXIST; - } - - if (h->from_pool) - e = allocate_tile(&first_entry_pool, &first_entry_tile, sizeof(struct hashmap_entry)); - else - e = new(struct hashmap_entry, 1); - - if (!e) - return -ENOMEM; - - e->key = key; - e->value = value; - - link_entry(h, e, hash); - - return 1; -} - -int hashmap_replace(Hashmap *h, const void *key, void *value) { - struct hashmap_entry *e; - unsigned hash; - - assert(h); - - hash = h->hash_func(key) % NBUCKETS; - e = hash_scan(h, hash, key); - if (e) { - e->key = key; - e->value = value; - return 0; - } - - return hashmap_put(h, key, value); -} - -int hashmap_update(Hashmap *h, const void *key, void *value) { - struct hashmap_entry *e; - unsigned hash; - - assert(h); - - hash = h->hash_func(key) % NBUCKETS; - e = hash_scan(h, hash, key); - if (!e) - return -ENOENT; - - e->value = value; - return 0; -} - -void* hashmap_get(Hashmap *h, const void *key) { - unsigned hash; - struct hashmap_entry *e; - - if (!h) - return NULL; - - hash = h->hash_func(key) % NBUCKETS; - e = hash_scan(h, hash, key); - if (!e) - return NULL; - - return e->value; -} - -void* hashmap_get2(Hashmap *h, const void *key, void **key2) { - unsigned hash; - struct hashmap_entry *e; - - if (!h) - return NULL; - - hash = h->hash_func(key) % NBUCKETS; - e = hash_scan(h, hash, key); - if (!e) - return NULL; - - if (key2) - *key2 = (void*) e->key; - - return e->value; -} - -bool hashmap_contains(Hashmap *h, const void *key) { - unsigned hash; - - if (!h) - return false; - - hash = h->hash_func(key) % NBUCKETS; - - if (!hash_scan(h, hash, key)) - return false; - - return true; -} - -void* hashmap_remove(Hashmap *h, const void *key) { - struct hashmap_entry *e; - unsigned hash; - void *data; - - if (!h) - return NULL; - - hash = h->hash_func(key) % NBUCKETS; - - if (!(e = hash_scan(h, hash, key))) - return NULL; - - data = e->value; - remove_entry(h, e); - - return data; -} - -int hashmap_remove_and_put(Hashmap *h, const void *old_key, const void *new_key, void *value) { - struct hashmap_entry *e; - unsigned old_hash, new_hash; - - if (!h) - return -ENOENT; - - old_hash = h->hash_func(old_key) % NBUCKETS; - if (!(e = hash_scan(h, old_hash, old_key))) - return -ENOENT; - - new_hash = h->hash_func(new_key) % NBUCKETS; - if (hash_scan(h, new_hash, new_key)) - return -EEXIST; - - unlink_entry(h, e, old_hash); - - e->key = new_key; - e->value = value; - - link_entry(h, e, new_hash); - - return 0; -} - -int hashmap_remove_and_replace(Hashmap *h, const void *old_key, const void *new_key, void *value) { - struct hashmap_entry *e, *k; - unsigned old_hash, new_hash; - - if (!h) - return -ENOENT; - - old_hash = h->hash_func(old_key) % NBUCKETS; - if (!(e = hash_scan(h, old_hash, old_key))) - return -ENOENT; - - new_hash = h->hash_func(new_key) % NBUCKETS; - - if ((k = hash_scan(h, new_hash, new_key))) - if (e != k) - remove_entry(h, k); - - unlink_entry(h, e, old_hash); - - e->key = new_key; - e->value = value; - - link_entry(h, e, new_hash); - - return 0; -} - -void* hashmap_remove_value(Hashmap *h, const void *key, void *value) { - struct hashmap_entry *e; - unsigned hash; - - if (!h) - return NULL; - - hash = h->hash_func(key) % NBUCKETS; - - if (!(e = hash_scan(h, hash, key))) - return NULL; - - if (e->value != value) - return NULL; - - remove_entry(h, e); - - return value; -} - -void *hashmap_iterate(Hashmap *h, Iterator *i, const void **key) { - struct hashmap_entry *e; - - assert(i); - - if (!h) - goto at_end; - - if (*i == ITERATOR_LAST) - goto at_end; - - if (*i == ITERATOR_FIRST && !h->iterate_list_head) - goto at_end; - - e = *i == ITERATOR_FIRST ? h->iterate_list_head : (struct hashmap_entry*) *i; - - if (e->iterate_next) - *i = (Iterator) e->iterate_next; - else - *i = ITERATOR_LAST; - - if (key) - *key = e->key; - - return e->value; - -at_end: - *i = ITERATOR_LAST; - - if (key) - *key = NULL; - - return NULL; -} - -void *hashmap_iterate_backwards(Hashmap *h, Iterator *i, const void **key) { - struct hashmap_entry *e; - - assert(i); - - if (!h) - goto at_beginning; - - if (*i == ITERATOR_FIRST) - goto at_beginning; - - if (*i == ITERATOR_LAST && !h->iterate_list_tail) - goto at_beginning; - - e = *i == ITERATOR_LAST ? h->iterate_list_tail : (struct hashmap_entry*) *i; - - if (e->iterate_previous) - *i = (Iterator) e->iterate_previous; - else - *i = ITERATOR_FIRST; - - if (key) - *key = e->key; - - return e->value; - -at_beginning: - *i = ITERATOR_FIRST; - - if (key) - *key = NULL; - - return NULL; -} - -void *hashmap_iterate_skip(Hashmap *h, const void *key, Iterator *i) { - unsigned hash; - struct hashmap_entry *e; - - if (!h) - return NULL; - - hash = h->hash_func(key) % NBUCKETS; - - if (!(e = hash_scan(h, hash, key))) - return NULL; - - *i = (Iterator) e; - - return e->value; -} - -void* hashmap_first(Hashmap *h) { - - if (!h) - return NULL; - - if (!h->iterate_list_head) - return NULL; - - return h->iterate_list_head->value; -} - -void* hashmap_first_key(Hashmap *h) { - - if (!h) - return NULL; - - if (!h->iterate_list_head) - return NULL; - - return (void*) h->iterate_list_head->key; -} - -void* hashmap_last(Hashmap *h) { - - if (!h) - return NULL; - - if (!h->iterate_list_tail) - return NULL; - - return h->iterate_list_tail->value; -} - -void* hashmap_steal_first(Hashmap *h) { - void *data; - - if (!h) - return NULL; - - if (!h->iterate_list_head) - return NULL; - - data = h->iterate_list_head->value; - remove_entry(h, h->iterate_list_head); - - return data; -} - -void* hashmap_steal_first_key(Hashmap *h) { - void *key; - - if (!h) - return NULL; - - if (!h->iterate_list_head) - return NULL; - - key = (void*) h->iterate_list_head->key; - remove_entry(h, h->iterate_list_head); - - return key; -} - -unsigned hashmap_size(Hashmap *h) { - - if (!h) - return 0; - - return h->n_entries; -} - -bool hashmap_isempty(Hashmap *h) { - - if (!h) - return true; - - return h->n_entries == 0; -} - -int hashmap_merge(Hashmap *h, Hashmap *other) { - struct hashmap_entry *e; - - assert(h); - - if (!other) - return 0; - - for (e = other->iterate_list_head; e; e = e->iterate_next) { - int r; - - if ((r = hashmap_put(h, e->key, e->value)) < 0) - if (r != -EEXIST) - return r; - } - - return 0; -} - -void hashmap_move(Hashmap *h, Hashmap *other) { - struct hashmap_entry *e, *n; - - assert(h); - - /* The same as hashmap_merge(), but every new item from other - * is moved to h. This function is guaranteed to succeed. */ - - if (!other) - return; - - for (e = other->iterate_list_head; e; e = n) { - unsigned h_hash, other_hash; - - n = e->iterate_next; - - h_hash = h->hash_func(e->key) % NBUCKETS; - - if (hash_scan(h, h_hash, e->key)) - continue; - - other_hash = other->hash_func(e->key) % NBUCKETS; - - unlink_entry(other, e, other_hash); - link_entry(h, e, h_hash); - } -} - -int hashmap_move_one(Hashmap *h, Hashmap *other, const void *key) { - unsigned h_hash, other_hash; - struct hashmap_entry *e; - - if (!other) - return 0; - - assert(h); - - h_hash = h->hash_func(key) % NBUCKETS; - if (hash_scan(h, h_hash, key)) - return -EEXIST; - - other_hash = other->hash_func(key) % NBUCKETS; - if (!(e = hash_scan(other, other_hash, key))) - return -ENOENT; - - unlink_entry(other, e, other_hash); - link_entry(h, e, h_hash); - - return 0; -} - -Hashmap *hashmap_copy(Hashmap *h) { - Hashmap *copy; - - assert(h); - - if (!(copy = hashmap_new(h->hash_func, h->compare_func))) - return NULL; - - if (hashmap_merge(copy, h) < 0) { - hashmap_free(copy); - return NULL; - } - - return copy; -} - -char **hashmap_get_strv(Hashmap *h) { - char **sv; - Iterator it; - char *item; - int n; - - sv = new(char*, h->n_entries+1); - if (!sv) - return NULL; - - n = 0; - HASHMAP_FOREACH(item, h, it) - sv[n++] = item; - sv[n] = NULL; - - return sv; -} - -void *hashmap_next(Hashmap *h, const void *key) { - unsigned hash; - struct hashmap_entry *e; - - assert(h); - assert(key); - - if (!h) - return NULL; - - hash = h->hash_func(key) % NBUCKETS; - e = hash_scan(h, hash, key); - if (!e) - return NULL; - - e = e->iterate_next; - if (!e) - return NULL; - - return e->value; -} diff --git a/src/udev/hashmap.h b/src/udev/hashmap.h deleted file mode 100644 index 6fd71cf519..0000000000 --- a/src/udev/hashmap.h +++ /dev/null @@ -1,98 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -/* Pretty straightforward hash table implementation. As a minor - * optimization a NULL hashmap object will be treated as empty hashmap - * for all read operations. That way it is not necessary to - * instantiate an object for each Hashmap use. */ - -typedef struct Hashmap Hashmap; -typedef struct _IteratorStruct _IteratorStruct; -typedef _IteratorStruct* Iterator; - -#define ITERATOR_FIRST ((Iterator) 0) -#define ITERATOR_LAST ((Iterator) -1) - -typedef unsigned (*hash_func_t)(const void *p); -typedef int (*compare_func_t)(const void *a, const void *b); - -unsigned string_hash_func(const void *p); -int string_compare_func(const void *a, const void *b); - -unsigned trivial_hash_func(const void *p); -int trivial_compare_func(const void *a, const void *b); - -unsigned uint64_hash_func(const void *p); -int uint64_compare_func(const void *a, const void *b); - -Hashmap *hashmap_new(hash_func_t hash_func, compare_func_t compare_func); -void hashmap_free(Hashmap *h); -void hashmap_free_free(Hashmap *h); -Hashmap *hashmap_copy(Hashmap *h); -int hashmap_ensure_allocated(Hashmap **h, hash_func_t hash_func, compare_func_t compare_func); - -int hashmap_put(Hashmap *h, const void *key, void *value); -int hashmap_update(Hashmap *h, const void *key, void *value); -int hashmap_replace(Hashmap *h, const void *key, void *value); -void* hashmap_get(Hashmap *h, const void *key); -void* hashmap_get2(Hashmap *h, const void *key, void **rkey); -bool hashmap_contains(Hashmap *h, const void *key); -void* hashmap_remove(Hashmap *h, const void *key); -void* hashmap_remove_value(Hashmap *h, const void *key, void *value); -int hashmap_remove_and_put(Hashmap *h, const void *old_key, const void *new_key, void *value); -int hashmap_remove_and_replace(Hashmap *h, const void *old_key, const void *new_key, void *value); - -int hashmap_merge(Hashmap *h, Hashmap *other); -void hashmap_move(Hashmap *h, Hashmap *other); -int hashmap_move_one(Hashmap *h, Hashmap *other, const void *key); - -unsigned hashmap_size(Hashmap *h); -bool hashmap_isempty(Hashmap *h); - -void *hashmap_iterate(Hashmap *h, Iterator *i, const void **key); -void *hashmap_iterate_backwards(Hashmap *h, Iterator *i, const void **key); -void *hashmap_iterate_skip(Hashmap *h, const void *key, Iterator *i); - -void hashmap_clear(Hashmap *h); -void hashmap_clear_free(Hashmap *h); - -void *hashmap_steal_first(Hashmap *h); -void *hashmap_steal_first_key(Hashmap *h); -void* hashmap_first(Hashmap *h); -void* hashmap_first_key(Hashmap *h); -void* hashmap_last(Hashmap *h); - -void *hashmap_next(Hashmap *h, const void *key); - -char **hashmap_get_strv(Hashmap *h); - -#define HASHMAP_FOREACH(e, h, i) \ - for ((i) = ITERATOR_FIRST, (e) = hashmap_iterate((h), &(i), NULL); (e); (e) = hashmap_iterate((h), &(i), NULL)) - -#define HASHMAP_FOREACH_KEY(e, k, h, i) \ - for ((i) = ITERATOR_FIRST, (e) = hashmap_iterate((h), &(i), (const void**) &(k)); (e); (e) = hashmap_iterate((h), &(i), (const void**) &(k))) - -#define HASHMAP_FOREACH_BACKWARDS(e, h, i) \ - for ((i) = ITERATOR_LAST, (e) = hashmap_iterate_backwards((h), &(i), NULL); (e); (e) = hashmap_iterate_backwards((h), &(i), NULL)) diff --git a/src/udev/ioprio.h b/src/udev/ioprio.h deleted file mode 100644 index 9800fc2553..0000000000 --- a/src/udev/ioprio.h +++ /dev/null @@ -1,57 +0,0 @@ -#ifndef IOPRIO_H -#define IOPRIO_H - -/* This is minimal version of Linux' linux/ioprio.h header file, which - * is licensed GPL2 */ - -#include <unistd.h> -#include <sys/syscall.h> - -/* - * Gives us 8 prio classes with 13-bits of data for each class - */ -#define IOPRIO_BITS (16) -#define IOPRIO_CLASS_SHIFT (13) -#define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1) - -#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT) -#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK) -#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data) - -#define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE) - -/* - * These are the io priority groups as implemented by CFQ. RT is the realtime - * class, it always gets premium service. BE is the best-effort scheduling - * class, the default for any process. IDLE is the idle scheduling class, it - * is only served when no one else is using the disk. - */ -enum { - IOPRIO_CLASS_NONE, - IOPRIO_CLASS_RT, - IOPRIO_CLASS_BE, - IOPRIO_CLASS_IDLE, -}; - -/* - * 8 best effort priority levels are supported - */ -#define IOPRIO_BE_NR (8) - -enum { - IOPRIO_WHO_PROCESS = 1, - IOPRIO_WHO_PGRP, - IOPRIO_WHO_USER, -}; - -static inline int ioprio_set(int which, int who, int ioprio) -{ - return syscall(__NR_ioprio_set, which, who, ioprio); -} - -static inline int ioprio_get(int which, int who) -{ - return syscall(__NR_ioprio_get, which, who); -} - -#endif diff --git a/src/udev/log.c b/src/udev/log.c deleted file mode 100644 index 5c07b626c2..0000000000 --- a/src/udev/log.c +++ /dev/null @@ -1,865 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdarg.h> -#include <stdio.h> -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/socket.h> -#include <sys/un.h> -#include <stddef.h> -#include <printf.h> - -#include "log.h" -#include "util.h" -#include "missing.h" -#include "macro.h" -#include "socket-util.h" - -#define SNDBUF_SIZE (8*1024*1024) - -static LogTarget log_target = LOG_TARGET_CONSOLE; -static int log_max_level = LOG_INFO; -static int log_facility = LOG_DAEMON; - -static int console_fd = STDERR_FILENO; -static int syslog_fd = -1; -static int kmsg_fd = -1; -static int journal_fd = -1; - -static bool syslog_is_stream = false; - -static bool show_color = false; -static bool show_location = false; - -/* Akin to glibc's __abort_msg; which is private and we hence cannot - * use here. */ -static char *log_abort_msg = NULL; - -void log_close_console(void) { - - if (console_fd < 0) - return; - - if (getpid() == 1) { - if (console_fd >= 3) - close_nointr_nofail(console_fd); - - console_fd = -1; - } -} - -static int log_open_console(void) { - - if (console_fd >= 0) - return 0; - - if (getpid() == 1) { - console_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); - if (console_fd < 0) - return console_fd; - } else - console_fd = STDERR_FILENO; - - return 0; -} - -void log_close_kmsg(void) { - - if (kmsg_fd < 0) - return; - - close_nointr_nofail(kmsg_fd); - kmsg_fd = -1; -} - -static int log_open_kmsg(void) { - - if (kmsg_fd >= 0) - return 0; - - kmsg_fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC); - if (kmsg_fd < 0) - return -errno; - - return 0; -} - -void log_close_syslog(void) { - - if (syslog_fd < 0) - return; - - close_nointr_nofail(syslog_fd); - syslog_fd = -1; -} - -static int create_log_socket(int type) { - int fd; - - /* All output to the syslog/journal fds we do asynchronously, - * and if the buffers are full we just drop the messages */ - - fd = socket(AF_UNIX, type|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); - if (fd < 0) - return -errno; - - fd_inc_sndbuf(fd, SNDBUF_SIZE); - - return fd; -} - -static int log_open_syslog(void) { - union sockaddr_union sa; - int r; - - if (syslog_fd >= 0) - return 0; - - zero(sa); - sa.un.sun_family = AF_UNIX; - strncpy(sa.un.sun_path, "/dev/log", sizeof(sa.un.sun_path)); - - syslog_fd = create_log_socket(SOCK_DGRAM); - if (syslog_fd < 0) { - r = syslog_fd; - goto fail; - } - - if (connect(syslog_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) { - close_nointr_nofail(syslog_fd); - - /* Some legacy syslog systems still use stream - * sockets. They really shouldn't. But what can we - * do... */ - syslog_fd = create_log_socket(SOCK_STREAM); - if (syslog_fd < 0) { - r = syslog_fd; - goto fail; - } - - if (connect(syslog_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) { - r = -errno; - goto fail; - } - - syslog_is_stream = true; - } else - syslog_is_stream = false; - - return 0; - -fail: - log_close_syslog(); - return r; -} - -void log_close_journal(void) { - - if (journal_fd < 0) - return; - - close_nointr_nofail(journal_fd); - journal_fd = -1; -} - -static int log_open_journal(void) { - union sockaddr_union sa; - int r; - - if (journal_fd >= 0) - return 0; - - journal_fd = create_log_socket(SOCK_DGRAM); - if (journal_fd < 0) { - r = journal_fd; - goto fail; - } - - zero(sa); - sa.un.sun_family = AF_UNIX; - strncpy(sa.un.sun_path, "/run/systemd/journal/socket", sizeof(sa.un.sun_path)); - - if (connect(journal_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) { - r = -errno; - goto fail; - } - - return 0; - -fail: - log_close_journal(); - return r; -} - -int log_open(void) { - int r; - - /* If we don't use the console we close it here, to not get - * killed by SAK. If we don't use syslog we close it here so - * that we are not confused by somebody deleting the socket in - * the fs. If we don't use /dev/kmsg we still keep it open, - * because there is no reason to close it. */ - - if (log_target == LOG_TARGET_NULL) { - log_close_journal(); - log_close_syslog(); - log_close_console(); - return 0; - } - - if ((log_target != LOG_TARGET_AUTO && log_target != LOG_TARGET_SAFE) || - getpid() == 1 || - isatty(STDERR_FILENO) <= 0) { - - if (log_target == LOG_TARGET_AUTO || - log_target == LOG_TARGET_JOURNAL_OR_KMSG || - log_target == LOG_TARGET_JOURNAL) { - r = log_open_journal(); - if (r >= 0) { - log_close_syslog(); - log_close_console(); - return r; - } - } - - if (log_target == LOG_TARGET_SYSLOG_OR_KMSG || - log_target == LOG_TARGET_SYSLOG) { - r = log_open_syslog(); - if (r >= 0) { - log_close_journal(); - log_close_console(); - return r; - } - } - - if (log_target == LOG_TARGET_AUTO || - log_target == LOG_TARGET_SAFE || - log_target == LOG_TARGET_JOURNAL_OR_KMSG || - log_target == LOG_TARGET_SYSLOG_OR_KMSG || - log_target == LOG_TARGET_KMSG) { - r = log_open_kmsg(); - if (r >= 0) { - log_close_journal(); - log_close_syslog(); - log_close_console(); - return r; - } - } - } - - log_close_journal(); - log_close_syslog(); - - /* Get the real /dev/console if we are PID=1, hence reopen */ - log_close_console(); - return log_open_console(); -} - -void log_set_target(LogTarget target) { - assert(target >= 0); - assert(target < _LOG_TARGET_MAX); - - log_target = target; -} - -void log_close(void) { - log_close_journal(); - log_close_syslog(); - log_close_kmsg(); - log_close_console(); -} - -void log_forget_fds(void) { - console_fd = kmsg_fd = syslog_fd = journal_fd = -1; -} - -void log_set_max_level(int level) { - assert((level & LOG_PRIMASK) == level); - - log_max_level = level; -} - -void log_set_facility(int facility) { - log_facility = facility; -} - -static int write_to_console( - int level, - const char*file, - int line, - const char *func, - const char *buffer) { - - char location[64]; - struct iovec iovec[5]; - unsigned n = 0; - bool highlight; - - if (console_fd < 0) - return 0; - - highlight = LOG_PRI(level) <= LOG_ERR && show_color; - - zero(iovec); - - if (show_location) { - snprintf(location, sizeof(location), "(%s:%u) ", file, line); - char_array_0(location); - IOVEC_SET_STRING(iovec[n++], location); - } - - if (highlight) - IOVEC_SET_STRING(iovec[n++], ANSI_HIGHLIGHT_RED_ON); - IOVEC_SET_STRING(iovec[n++], buffer); - if (highlight) - IOVEC_SET_STRING(iovec[n++], ANSI_HIGHLIGHT_OFF); - IOVEC_SET_STRING(iovec[n++], "\n"); - - if (writev(console_fd, iovec, n) < 0) - return -errno; - - return 1; -} - -static int write_to_syslog( - int level, - const char*file, - int line, - const char *func, - const char *buffer) { - - char header_priority[16], header_time[64], header_pid[16]; - struct iovec iovec[5]; - struct msghdr msghdr; - time_t t; - struct tm *tm; - - if (syslog_fd < 0) - return 0; - - snprintf(header_priority, sizeof(header_priority), "<%i>", level); - char_array_0(header_priority); - - t = (time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC); - if (!(tm = localtime(&t))) - return -EINVAL; - - if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0) - return -EINVAL; - - snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) getpid()); - char_array_0(header_pid); - - zero(iovec); - IOVEC_SET_STRING(iovec[0], header_priority); - IOVEC_SET_STRING(iovec[1], header_time); - IOVEC_SET_STRING(iovec[2], program_invocation_short_name); - IOVEC_SET_STRING(iovec[3], header_pid); - IOVEC_SET_STRING(iovec[4], buffer); - - /* When using syslog via SOCK_STREAM separate the messages by NUL chars */ - if (syslog_is_stream) - iovec[4].iov_len++; - - zero(msghdr); - msghdr.msg_iov = iovec; - msghdr.msg_iovlen = ELEMENTSOF(iovec); - - for (;;) { - ssize_t n; - - n = sendmsg(syslog_fd, &msghdr, MSG_NOSIGNAL); - if (n < 0) - return -errno; - - if (!syslog_is_stream || - (size_t) n >= IOVEC_TOTAL_SIZE(iovec, ELEMENTSOF(iovec))) - break; - - IOVEC_INCREMENT(iovec, ELEMENTSOF(iovec), n); - } - - return 1; -} - -static int write_to_kmsg( - int level, - const char*file, - int line, - const char *func, - const char *buffer) { - - char header_priority[16], header_pid[16]; - struct iovec iovec[5]; - - if (kmsg_fd < 0) - return 0; - - snprintf(header_priority, sizeof(header_priority), "<%i>", level); - char_array_0(header_priority); - - snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) getpid()); - char_array_0(header_pid); - - zero(iovec); - IOVEC_SET_STRING(iovec[0], header_priority); - IOVEC_SET_STRING(iovec[1], program_invocation_short_name); - IOVEC_SET_STRING(iovec[2], header_pid); - IOVEC_SET_STRING(iovec[3], buffer); - IOVEC_SET_STRING(iovec[4], "\n"); - - if (writev(kmsg_fd, iovec, ELEMENTSOF(iovec)) < 0) - return -errno; - - return 1; -} - -static int write_to_journal( - int level, - const char*file, - int line, - const char *func, - const char *buffer) { - - char header[LINE_MAX]; - struct iovec iovec[3]; - struct msghdr mh; - - if (journal_fd < 0) - return 0; - - snprintf(header, sizeof(header), - "PRIORITY=%i\n" - "SYSLOG_FACILITY=%i\n" - "CODE_FILE=%s\n" - "CODE_LINE=%i\n" - "CODE_FUNCTION=%s\n" - "SYSLOG_IDENTIFIER=%s\n" - "MESSAGE=", - LOG_PRI(level), - LOG_FAC(level), - file, - line, - func, - program_invocation_short_name); - - char_array_0(header); - - zero(iovec); - IOVEC_SET_STRING(iovec[0], header); - IOVEC_SET_STRING(iovec[1], buffer); - IOVEC_SET_STRING(iovec[2], "\n"); - - zero(mh); - mh.msg_iov = iovec; - mh.msg_iovlen = ELEMENTSOF(iovec); - - if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0) - return -errno; - - return 1; -} - -static int log_dispatch( - int level, - const char*file, - int line, - const char *func, - char *buffer) { - - int r = 0; - - if (log_target == LOG_TARGET_NULL) - return 0; - - /* Patch in LOG_DAEMON facility if necessary */ - if ((level & LOG_FACMASK) == 0) - level = log_facility | LOG_PRI(level); - - do { - char *e; - int k = 0; - - buffer += strspn(buffer, NEWLINE); - - if (buffer[0] == 0) - break; - - if ((e = strpbrk(buffer, NEWLINE))) - *(e++) = 0; - - if (log_target == LOG_TARGET_AUTO || - log_target == LOG_TARGET_JOURNAL_OR_KMSG || - log_target == LOG_TARGET_JOURNAL) { - - k = write_to_journal(level, file, line, func, buffer); - if (k < 0) { - if (k != -EAGAIN) - log_close_journal(); - log_open_kmsg(); - } else if (k > 0) - r++; - } - - if (log_target == LOG_TARGET_SYSLOG_OR_KMSG || - log_target == LOG_TARGET_SYSLOG) { - - k = write_to_syslog(level, file, line, func, buffer); - if (k < 0) { - if (k != -EAGAIN) - log_close_syslog(); - log_open_kmsg(); - } else if (k > 0) - r++; - } - - if (k <= 0 && - (log_target == LOG_TARGET_AUTO || - log_target == LOG_TARGET_SAFE || - log_target == LOG_TARGET_SYSLOG_OR_KMSG || - log_target == LOG_TARGET_JOURNAL_OR_KMSG || - log_target == LOG_TARGET_KMSG)) { - - k = write_to_kmsg(level, file, line, func, buffer); - if (k < 0) { - log_close_kmsg(); - log_open_console(); - } else if (k > 0) - r++; - } - - if (k <= 0) { - k = write_to_console(level, file, line, func, buffer); - if (k < 0) - return k; - } - - buffer = e; - } while (buffer); - - return r; -} - -int log_dump_internal( - int level, - const char*file, - int line, - const char *func, - char *buffer) { - - int saved_errno, r; - - /* This modifies the buffer... */ - - if (_likely_(LOG_PRI(level) > log_max_level)) - return 0; - - saved_errno = errno; - r = log_dispatch(level, file, line, func, buffer); - errno = saved_errno; - - return r; -} - -int log_metav( - int level, - const char*file, - int line, - const char *func, - const char *format, - va_list ap) { - - char buffer[LINE_MAX]; - int saved_errno, r; - - if (_likely_(LOG_PRI(level) > log_max_level)) - return 0; - - saved_errno = errno; - vsnprintf(buffer, sizeof(buffer), format, ap); - char_array_0(buffer); - - r = log_dispatch(level, file, line, func, buffer); - errno = saved_errno; - - return r; -} - -int log_meta( - int level, - const char*file, - int line, - const char *func, - const char *format, ...) { - - int r; - va_list ap; - - va_start(ap, format); - r = log_metav(level, file, line, func, format, ap); - va_end(ap); - - return r; -} - -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wformat-nonliteral" -_noreturn_ static void log_assert(const char *text, const char *file, int line, const char *func, const char *format) { - static char buffer[LINE_MAX]; - - snprintf(buffer, sizeof(buffer), format, text, file, line, func); - - char_array_0(buffer); - log_abort_msg = buffer; - - log_dispatch(LOG_CRIT, file, line, func, buffer); - abort(); -} -#pragma GCC diagnostic pop - -_noreturn_ void log_assert_failed(const char *text, const char *file, int line, const char *func) { - log_assert(text, file, line, func, "Assertion '%s' failed at %s:%u, function %s(). Aborting."); -} - -_noreturn_ void log_assert_failed_unreachable(const char *text, const char *file, int line, const char *func) { - log_assert(text, file, line, func, "Code should not be reached '%s' at %s:%u, function %s(). Aborting."); -} - -int log_oom_internal(const char *file, int line, const char *func) { - log_meta(LOG_ERR, file, line, func, "Out of memory."); - return -ENOMEM; -} - -int log_struct_internal( - int level, - const char *file, - int line, - const char *func, - const char *format, ...) { - - int saved_errno; - va_list ap; - int r; - - if (_likely_(LOG_PRI(level) > log_max_level)) - return 0; - - if (log_target == LOG_TARGET_NULL) - return 0; - - if ((level & LOG_FACMASK) == 0) - level = log_facility | LOG_PRI(level); - - saved_errno = errno; - - if ((log_target == LOG_TARGET_AUTO || - log_target == LOG_TARGET_JOURNAL_OR_KMSG || - log_target == LOG_TARGET_JOURNAL) && - journal_fd >= 0) { - - char header[LINE_MAX]; - struct iovec iovec[17]; - unsigned n = 0, i; - struct msghdr mh; - const char nl = '\n'; - - /* If the journal is available do structured logging */ - - snprintf(header, sizeof(header), - "PRIORITY=%i\n" - "SYSLOG_FACILITY=%i\n" - "CODE_FILE=%s\n" - "CODE_LINE=%i\n" - "CODE_FUNCTION=%s\n" - "SYSLOG_IDENTIFIER=%s\n", - LOG_PRI(level), - LOG_FAC(level), - file, - line, - func, - program_invocation_short_name); - char_array_0(header); - - zero(iovec); - IOVEC_SET_STRING(iovec[n++], header); - - va_start(ap, format); - while (format && n + 1 < ELEMENTSOF(iovec)) { - char *buf; - va_list aq; - - /* We need to copy the va_list structure, - * since vasprintf() leaves it afterwards at - * an undefined location */ - - va_copy(aq, ap); - if (vasprintf(&buf, format, aq) < 0) { - va_end(aq); - r = -ENOMEM; - goto finish; - } - va_end(aq); - - /* Now, jump enough ahead, so that we point to - * the next format string */ - VA_FORMAT_ADVANCE(format, ap); - - IOVEC_SET_STRING(iovec[n++], buf); - - iovec[n].iov_base = (char*) &nl; - iovec[n].iov_len = 1; - n++; - - format = va_arg(ap, char *); - } - - zero(mh); - mh.msg_iov = iovec; - mh.msg_iovlen = n; - - if (sendmsg(journal_fd, &mh, MSG_NOSIGNAL) < 0) - r = -errno; - else - r = 1; - - finish: - va_end(ap); - for (i = 1; i < n; i += 2) - free(iovec[i].iov_base); - - } else { - char buf[LINE_MAX]; - bool found = false; - - /* Fallback if journal logging is not available */ - - va_start(ap, format); - while (format) { - va_list aq; - - va_copy(aq, ap); - vsnprintf(buf, sizeof(buf), format, aq); - va_end(aq); - char_array_0(buf); - - if (startswith(buf, "MESSAGE=")) { - found = true; - break; - } - - VA_FORMAT_ADVANCE(format, ap); - - format = va_arg(ap, char *); - } - va_end(ap); - - if (found) - r = log_dispatch(level, file, line, func, buf + 8); - else - r = -EINVAL; - } - - errno = saved_errno; - return r; -} - -int log_set_target_from_string(const char *e) { - LogTarget t; - - t = log_target_from_string(e); - if (t < 0) - return -EINVAL; - - log_set_target(t); - return 0; -} - -int log_set_max_level_from_string(const char *e) { - int t; - - t = log_level_from_string(e); - if (t < 0) - return t; - - log_set_max_level(t); - return 0; -} - -LogTarget log_get_target(void) { - return log_target; -} - -int log_get_max_level(void) { - return log_max_level; -} - -void log_show_color(bool b) { - show_color = b; -} - -void log_show_location(bool b) { - show_location = b; -} - -int log_show_color_from_string(const char *e) { - int t; - - t = parse_boolean(e); - if (t < 0) - return t; - - log_show_color(t); - return 0; -} - -int log_show_location_from_string(const char *e) { - int t; - - t = parse_boolean(e); - if (t < 0) - return t; - - log_show_location(t); - return 0; -} - -bool log_on_console(void) { - if (log_target == LOG_TARGET_CONSOLE) - return true; - - return syslog_fd < 0 && kmsg_fd < 0 && journal_fd < 0; -} - -static const char *const log_target_table[] = { - [LOG_TARGET_CONSOLE] = "console", - [LOG_TARGET_KMSG] = "kmsg", - [LOG_TARGET_JOURNAL] = "journal", - [LOG_TARGET_JOURNAL_OR_KMSG] = "journal-or-kmsg", - [LOG_TARGET_SYSLOG] = "syslog", - [LOG_TARGET_SYSLOG_OR_KMSG] = "syslog-or-kmsg", - [LOG_TARGET_AUTO] = "auto", - [LOG_TARGET_SAFE] = "safe", - [LOG_TARGET_NULL] = "null" -}; - -DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget); diff --git a/src/udev/log.h b/src/udev/log.h deleted file mode 100644 index fd2285cb61..0000000000 --- a/src/udev/log.h +++ /dev/null @@ -1,137 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <syslog.h> -#include <stdbool.h> -#include <stdarg.h> -#include <errno.h> - -#include "macro.h" - -typedef enum LogTarget{ - LOG_TARGET_CONSOLE, - LOG_TARGET_KMSG, - LOG_TARGET_JOURNAL, - LOG_TARGET_JOURNAL_OR_KMSG, - LOG_TARGET_SYSLOG, - LOG_TARGET_SYSLOG_OR_KMSG, - LOG_TARGET_AUTO, /* console if stderr is tty, JOURNAL_OR_KMSG otherwise */ - LOG_TARGET_SAFE, /* console if stderr is tty, KMSG otherwise */ - LOG_TARGET_NULL, - _LOG_TARGET_MAX, - _LOG_TARGET_INVALID = -1 -} LogTarget; - -void log_set_target(LogTarget target); -void log_set_max_level(int level); -void log_set_facility(int facility); - -int log_set_target_from_string(const char *e); -int log_set_max_level_from_string(const char *e); - -void log_show_color(bool b); -void log_show_location(bool b); - -int log_show_color_from_string(const char *e); -int log_show_location_from_string(const char *e); - -LogTarget log_get_target(void); -int log_get_max_level(void); - -int log_open(void); -void log_close(void); -void log_forget_fds(void); - -void log_close_syslog(void); -void log_close_journal(void); -void log_close_kmsg(void); -void log_close_console(void); - -int log_meta( - int level, - const char*file, - int line, - const char *func, - const char *format, ...) _printf_attr_(5,6); - -int log_metav( - int level, - const char*file, - int line, - const char *func, - const char *format, - va_list ap); - -int log_struct_internal( - int level, - const char *file, - int line, - const char *func, - const char *format, ...) _sentinel_; - -int log_oom_internal( - const char *file, - int line, - const char *func); - -/* This modifies the buffer passed! */ -int log_dump_internal( - int level, - const char*file, - int line, - const char *func, - char *buffer); - -_noreturn_ void log_assert_failed( - const char *text, - const char *file, - int line, - const char *func); - -_noreturn_ void log_assert_failed_unreachable( - const char *text, - const char *file, - int line, - const char *func); - -#define log_full(level, ...) log_meta(level, __FILE__, __LINE__, __func__, __VA_ARGS__) - -#define log_debug(...) log_meta(LOG_DEBUG, __FILE__, __LINE__, __func__, __VA_ARGS__) -#define log_info(...) log_meta(LOG_INFO, __FILE__, __LINE__, __func__, __VA_ARGS__) -#define log_notice(...) log_meta(LOG_NOTICE, __FILE__, __LINE__, __func__, __VA_ARGS__) -#define log_warning(...) log_meta(LOG_WARNING, __FILE__, __LINE__, __func__, __VA_ARGS__) -#define log_error(...) log_meta(LOG_ERR, __FILE__, __LINE__, __func__, __VA_ARGS__) - -#define log_struct(level, ...) log_struct_internal(level, __FILE__, __LINE__, __func__, __VA_ARGS__) - -#define log_oom() log_oom_internal(__FILE__, __LINE__, __func__) - -/* This modifies the buffer passed! */ -#define log_dump(level, buffer) log_dump_internal(level, __FILE__, __LINE__, __func__, buffer) - -bool log_on_console(void); - -const char *log_target_to_string(LogTarget target); -LogTarget log_target_from_string(const char *s); - -#define MESSAGE_ID(x) "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(x) diff --git a/src/udev/macro.h b/src/udev/macro.h deleted file mode 100644 index e930fdab53..0000000000 --- a/src/udev/macro.h +++ /dev/null @@ -1,242 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/uio.h> -#include <inttypes.h> - -#define _printf_attr_(a,b) __attribute__ ((format (printf, a, b))) -#define _sentinel_ __attribute__ ((sentinel)) -#define _noreturn_ __attribute__((noreturn)) -#define _unused_ __attribute__ ((unused)) -#define _destructor_ __attribute__ ((destructor)) -#define _pure_ __attribute__ ((pure)) -#define _const_ __attribute__ ((const)) -#define _deprecated_ __attribute__ ((deprecated)) -#define _packed_ __attribute__ ((packed)) -#define _malloc_ __attribute__ ((malloc)) -#define _weak_ __attribute__ ((weak)) -#define _likely_(x) (__builtin_expect(!!(x),1)) -#define _unlikely_(x) (__builtin_expect(!!(x),0)) -#define _public_ __attribute__ ((visibility("default"))) -#define _hidden_ __attribute__ ((visibility("hidden"))) -#define _weakref_(x) __attribute__((weakref(#x))) -#define _introspect_(x) __attribute__((section("introspect." x))) -#define _alignas_(x) __attribute__((aligned(__alignof(x)))) - -#define XSTRINGIFY(x) #x -#define STRINGIFY(x) XSTRINGIFY(x) - -/* Rounds up */ -#define ALIGN(l) ALIGN_TO((l), sizeof(void*)) -static inline size_t ALIGN_TO(size_t l, size_t ali) { - return ((l + ali - 1) & ~(ali - 1)); -} - -#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0])) - -/* - * container_of - cast a member of a structure out to the containing structure - * @ptr: the pointer to the member. - * @type: the type of the container struct this is embedded in. - * @member: the name of the member within the struct. - * - */ -#define container_of(ptr, type, member) ({ \ - const typeof( ((type *)0)->member ) *__mptr = (ptr); \ - (type *)( (char *)__mptr - offsetof(type,member) );}) - -#ifndef MAX -#define MAX(a,b) \ - __extension__ ({ \ - typeof(a) _a = (a); \ - typeof(b) _b = (b); \ - _a > _b ? _a : _b; \ - }) -#endif - -#define MAX3(a,b,c) \ - MAX(MAX(a,b),c) - -#ifndef MIN -#define MIN(a,b) \ - __extension__ ({ \ - typeof(a) _a = (a); \ - typeof(b) _b = (b); \ - _a < _b ? _a : _b; \ - }) -#endif - -#define MIN3(a,b,c) \ - MIN(MIN(a,b),c) - -#define CLAMP(x, low, high) \ - __extension__ ({ \ - typeof(x) _x = (x); \ - typeof(low) _low = (low); \ - typeof(high) _high = (high); \ - ((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \ - }) - -#define assert_se(expr) \ - do { \ - if (_unlikely_(!(expr))) \ - log_assert_failed(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ - } while (false) \ - -/* We override the glibc assert() here. */ -#undef assert -#ifdef NDEBUG -#define assert(expr) do {} while(false) -#else -#define assert(expr) assert_se(expr) -#endif - -#define assert_not_reached(t) \ - do { \ - log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ - } while (false) - -#define assert_cc(expr) \ - do { \ - switch (0) { \ - case 0: \ - case !!(expr): \ - ; \ - } \ - } while (false) - -#define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p))) -#define UINT_TO_PTR(u) ((void*) ((uintptr_t) (u))) - -#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p))) -#define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u))) - -#define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p))) -#define ULONG_TO_PTR(u) ((void*) ((uintptr_t) (u))) - -#define PTR_TO_INT(p) ((int) ((intptr_t) (p))) -#define INT_TO_PTR(u) ((void*) ((intptr_t) (u))) - -#define TO_INT32(p) ((int32_t) ((intptr_t) (p))) -#define INT32_TO_PTR(u) ((void*) ((intptr_t) (u))) - -#define PTR_TO_LONG(p) ((long) ((intptr_t) (p))) -#define LONG_TO_PTR(u) ((void*) ((intptr_t) (u))) - -#define memzero(x,l) (memset((x), 0, (l))) -#define zero(x) (memzero(&(x), sizeof(x))) - -#define char_array_0(x) x[sizeof(x)-1] = 0; - -#define IOVEC_SET_STRING(i, s) \ - do { \ - struct iovec *_i = &(i); \ - char *_s = (char *)(s); \ - _i->iov_base = _s; \ - _i->iov_len = strlen(_s); \ - } while(false) - -static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) { - unsigned j; - size_t r = 0; - - for (j = 0; j < n; j++) - r += i[j].iov_len; - - return r; -} - -static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) { - unsigned j; - - for (j = 0; j < n; j++) { - size_t sub; - - if (_unlikely_(k <= 0)) - break; - - sub = MIN(i[j].iov_len, k); - i[j].iov_len -= sub; - i[j].iov_base = (uint8_t*) i[j].iov_base + sub; - k -= sub; - } - - return k; -} - -#define _cleanup_free_ __attribute__((cleanup(freep))) -#define _cleanup_fclose_ __attribute__((cleanup(fclosep))) -#define _cleanup_close_ __attribute__((cleanup(closep))) -#define _cleanup_closedir_ __attribute__((cleanup(closedirp))) -#define _cleanup_umask_ __attribute__((cleanup(umaskp))) -#define _cleanup_strv_free_ __attribute__((cleanup(strv_freep))) - -#define VA_FORMAT_ADVANCE(format, ap) \ -do { \ - int _argtypes[128]; \ - size_t _i, _k; \ - _k = parse_printf_format((format), ELEMENTSOF(_argtypes), _argtypes); \ - assert(_k < ELEMENTSOF(_argtypes)); \ - for (_i = 0; _i < _k; _i++) { \ - if (_argtypes[_i] & PA_FLAG_PTR) { \ - (void) va_arg(ap, void*); \ - continue; \ - } \ - \ - switch (_argtypes[_i]) { \ - case PA_INT: \ - case PA_INT|PA_FLAG_SHORT: \ - case PA_CHAR: \ - (void) va_arg(ap, int); \ - break; \ - case PA_INT|PA_FLAG_LONG: \ - (void) va_arg(ap, long int); \ - break; \ - case PA_INT|PA_FLAG_LONG_LONG: \ - (void) va_arg(ap, long long int); \ - break; \ - case PA_WCHAR: \ - (void) va_arg(ap, wchar_t); \ - break; \ - case PA_WSTRING: \ - case PA_STRING: \ - case PA_POINTER: \ - (void) va_arg(ap, void*); \ - break; \ - case PA_FLOAT: \ - case PA_DOUBLE: \ - (void) va_arg(ap, double); \ - break; \ - case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: \ - (void) va_arg(ap, long double); \ - break; \ - default: \ - assert_not_reached("Unknown format string argument."); \ - } \ - } \ -} while(false) - -#include "log.h" diff --git a/src/udev/missing.h b/src/udev/missing.h deleted file mode 100644 index 0c8ae7f381..0000000000 --- a/src/udev/missing.h +++ /dev/null @@ -1,247 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -/* Missing glibc definitions to access certain kernel APIs */ - -#include <sys/resource.h> -#include <sys/syscall.h> -#include <fcntl.h> -#include <stdlib.h> -#include <unistd.h> -#include <linux/oom.h> - -#ifdef HAVE_AUDIT -#include <libaudit.h> -#endif - -#include "macro.h" - -#ifdef ARCH_MIPS -#include <asm/sgidefs.h> -#endif - -#ifndef RLIMIT_RTTIME -#define RLIMIT_RTTIME 15 -#endif - -#ifndef F_LINUX_SPECIFIC_BASE -#define F_LINUX_SPECIFIC_BASE 1024 -#endif - -#ifndef F_SETPIPE_SZ -#define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) -#endif - -#ifndef F_GETPIPE_SZ -#define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) -#endif - -#ifndef IP_FREEBIND -#define IP_FREEBIND 15 -#endif - -#ifndef OOM_SCORE_ADJ_MIN -#define OOM_SCORE_ADJ_MIN (-1000) -#endif - -#ifndef OOM_SCORE_ADJ_MAX -#define OOM_SCORE_ADJ_MAX 1000 -#endif - -#ifndef AUDIT_SERVICE_START -#define AUDIT_SERVICE_START 1130 /* Service (daemon) start */ -#endif - -#ifndef AUDIT_SERVICE_STOP -#define AUDIT_SERVICE_STOP 1131 /* Service (daemon) stop */ -#endif - -#ifndef TIOCVHANGUP -#define TIOCVHANGUP 0x5437 -#endif - -#ifndef IP_TRANSPARENT -#define IP_TRANSPARENT 19 -#endif - -#if !HAVE_DECL_PIVOT_ROOT -static inline int pivot_root(const char *new_root, const char *put_old) { - return syscall(SYS_pivot_root, new_root, put_old); -} -#endif - -#ifdef __x86_64__ -# ifndef __NR_fanotify_init -# define __NR_fanotify_init 300 -# endif -# ifndef __NR_fanotify_mark -# define __NR_fanotify_mark 301 -# endif -#elif defined _MIPS_SIM -# if _MIPS_SIM == _MIPS_SIM_ABI32 -# ifndef __NR_fanotify_init -# define __NR_fanotify_init 4336 -# endif -# ifndef __NR_fanotify_mark -# define __NR_fanotify_mark 4337 -# endif -# elif _MIPS_SIM == _MIPS_SIM_NABI32 -# ifndef __NR_fanotify_init -# define __NR_fanotify_init 6300 -# endif -# ifndef __NR_fanotify_mark -# define __NR_fanotify_mark 6301 -# endif -# elif _MIPS_SIM == _MIPS_SIM_ABI64 -# ifndef __NR_fanotify_init -# define __NR_fanotify_init 5295 -# endif -# ifndef __NR_fanotify_mark -# define __NR_fanotify_mark 5296 -# endif -# endif -#else -# ifndef __NR_fanotify_init -# define __NR_fanotify_init 338 -# endif -# ifndef __NR_fanotify_mark -# define __NR_fanotify_mark 339 -# endif -#endif - -#ifndef HAVE_FANOTIFY_INIT -static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags) { - return syscall(__NR_fanotify_init, flags, event_f_flags); -} -#endif - -#ifndef HAVE_FANOTIFY_MARK -static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask, - int dfd, const char *pathname) { -#if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32 || defined __powerpc__ && !defined __powerpc64__ - union { - uint64_t _64; - uint32_t _32[2]; - } _mask; - _mask._64 = mask; - - return syscall(__NR_fanotify_mark, fanotify_fd, flags, - _mask._32[0], _mask._32[1], dfd, pathname); -#else - return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname); -#endif -} -#endif - -#ifndef BTRFS_IOCTL_MAGIC -#define BTRFS_IOCTL_MAGIC 0x94 -#endif - -#ifndef BTRFS_PATH_NAME_MAX -#define BTRFS_PATH_NAME_MAX 4087 -#endif - -struct btrfs_ioctl_vol_args { - int64_t fd; - char name[BTRFS_PATH_NAME_MAX + 1]; -}; - -#ifndef BTRFS_IOC_DEFRAG -#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, struct btrfs_ioctl_vol_args) -#endif - -#ifndef BTRFS_SUPER_MAGIC -#define BTRFS_SUPER_MAGIC 0x9123683E -#endif - -#ifndef MS_MOVE -#define MS_MOVE 8192 -#endif - -#ifndef MS_PRIVATE -#define MS_PRIVATE (1 << 18) -#endif - -#if !HAVE_DECL_GETTID -static inline pid_t gettid(void) { - return (pid_t) syscall(SYS_gettid); -} -#endif - -#ifndef SCM_SECURITY -#define SCM_SECURITY 0x03 -#endif - -#ifndef MS_STRICTATIME -#define MS_STRICTATIME (1<<24) -#endif - -#ifndef PR_SET_NO_NEW_PRIVS -#define PR_SET_NO_NEW_PRIVS 38 -#endif - -#ifndef PR_SET_CHILD_SUBREAPER -#define PR_SET_CHILD_SUBREAPER 36 -#endif - -#ifndef MAX_HANDLE_SZ -#define MAX_HANDLE_SZ 128 -#endif - -#if defined __x86_64__ -# ifndef __NR_name_to_handle_at -# define __NR_name_to_handle_at 303 -# endif -#elif defined __i386__ -# ifndef __NR_name_to_handle_at -# define __NR_name_to_handle_at 341 -# endif -#elif defined __arm__ -# ifndef __NR_name_to_handle_at -# define __NR_name_to_handle_at 370 -# endif -#elif defined __powerpc__ -# ifndef __NR_name_to_handle_at -# define __NR_name_to_handle_at 345 -# endif -#else -# ifndef __NR_name_to_handle_at -# error __NR_name_to_handle_at is not defined -# endif -#endif - -#if !HAVE_DECL_NAME_TO_HANDLE_AT -struct file_handle { - unsigned int handle_bytes; - int handle_type; - unsigned char f_handle[0]; -}; - -static inline int name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) { - return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags); -} -#endif - -#ifndef CIFS_MAGIC_NUMBER -#define CIFS_MAGIC_NUMBER 0xFF534D42 -#endif diff --git a/src/udev/path-util.c b/src/udev/path-util.c deleted file mode 100644 index 70c8a8af06..0000000000 --- a/src/udev/path-util.c +++ /dev/null @@ -1,419 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010-2012 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include <stdlib.h> -#include <signal.h> -#include <stdio.h> -#include <fcntl.h> -#include <dirent.h> -#include <sys/statvfs.h> - -#include "macro.h" -#include "util.h" -#include "log.h" -#include "strv.h" -#include "path-util.h" -#include "missing.h" - -bool path_is_absolute(const char *p) { - return p[0] == '/'; -} - -bool is_path(const char *p) { - return !!strchr(p, '/'); -} - -char *path_get_file_name(const char *p) { - char *r; - - assert(p); - - if ((r = strrchr(p, '/'))) - return r + 1; - - return (char*) p; -} - -int path_get_parent(const char *path, char **_r) { - const char *e, *a = NULL, *b = NULL, *p; - char *r; - bool slash = false; - - assert(path); - assert(_r); - - if (!*path) - return -EINVAL; - - for (e = path; *e; e++) { - - if (!slash && *e == '/') { - a = b; - b = e; - slash = true; - } else if (slash && *e != '/') - slash = false; - } - - if (*(e-1) == '/') - p = a; - else - p = b; - - if (!p) - return -EINVAL; - - if (p == path) - r = strdup("/"); - else - r = strndup(path, p-path); - - if (!r) - return -ENOMEM; - - *_r = r; - return 0; -} - -char **path_split_and_make_absolute(const char *p) { - char **l; - assert(p); - - if (!(l = strv_split(p, ":"))) - return NULL; - - if (!path_strv_make_absolute_cwd(l)) { - strv_free(l); - return NULL; - } - - return l; -} - -char *path_make_absolute(const char *p, const char *prefix) { - assert(p); - - /* Makes every item in the list an absolute path by prepending - * the prefix, if specified and necessary */ - - if (path_is_absolute(p) || !prefix) - return strdup(p); - - return strjoin(prefix, "/", p, NULL); -} - -char *path_make_absolute_cwd(const char *p) { - char *cwd, *r; - - assert(p); - - /* Similar to path_make_absolute(), but prefixes with the - * current working directory. */ - - if (path_is_absolute(p)) - return strdup(p); - - if (!(cwd = get_current_dir_name())) - return NULL; - - r = path_make_absolute(p, cwd); - free(cwd); - - return r; -} - -char **path_strv_make_absolute_cwd(char **l) { - char **s; - - /* Goes through every item in the string list and makes it - * absolute. This works in place and won't rollback any - * changes on failure. */ - - STRV_FOREACH(s, l) { - char *t; - - if (!(t = path_make_absolute_cwd(*s))) - return NULL; - - free(*s); - *s = t; - } - - return l; -} - -char **path_strv_canonicalize(char **l) { - char **s; - unsigned k = 0; - bool enomem = false; - - if (strv_isempty(l)) - return l; - - /* Goes through every item in the string list and canonicalize - * the path. This works in place and won't rollback any - * changes on failure. */ - - STRV_FOREACH(s, l) { - char *t, *u; - - t = path_make_absolute_cwd(*s); - free(*s); - - if (!t) { - enomem = true; - continue; - } - - errno = 0; - u = canonicalize_file_name(t); - free(t); - - if (!u) { - if (errno == ENOMEM || !errno) - enomem = true; - - continue; - } - - l[k++] = u; - } - - l[k] = NULL; - - if (enomem) - return NULL; - - return l; -} - -char **path_strv_remove_empty(char **l) { - char **f, **t; - - if (!l) - return NULL; - - for (f = t = l; *f; f++) { - - if (dir_is_empty(*f) > 0) { - free(*f); - continue; - } - - *(t++) = *f; - } - - *t = NULL; - return l; -} - -char *path_kill_slashes(char *path) { - char *f, *t; - bool slash = false; - - /* Removes redundant inner and trailing slashes. Modifies the - * passed string in-place. - * - * ///foo///bar/ becomes /foo/bar - */ - - for (f = path, t = path; *f; f++) { - - if (*f == '/') { - slash = true; - continue; - } - - if (slash) { - slash = false; - *(t++) = '/'; - } - - *(t++) = *f; - } - - /* Special rule, if we are talking of the root directory, a - trailing slash is good */ - - if (t == path && slash) - *(t++) = '/'; - - *t = 0; - return path; -} - -char* path_startswith(const char *path, const char *prefix) { - assert(path); - assert(prefix); - - if ((path[0] == '/') != (prefix[0] == '/')) - return NULL; - - for (;;) { - size_t a, b; - - path += strspn(path, "/"); - prefix += strspn(prefix, "/"); - - if (*prefix == 0) - return (char*) path; - - if (*path == 0) - return NULL; - - a = strcspn(path, "/"); - b = strcspn(prefix, "/"); - - if (a != b) - return NULL; - - if (memcmp(path, prefix, a) != 0) - return NULL; - - path += a; - prefix += b; - } -} - -bool path_equal(const char *a, const char *b) { - assert(a); - assert(b); - - if ((a[0] == '/') != (b[0] == '/')) - return false; - - for (;;) { - size_t j, k; - - a += strspn(a, "/"); - b += strspn(b, "/"); - - if (*a == 0 && *b == 0) - return true; - - if (*a == 0 || *b == 0) - return false; - - j = strcspn(a, "/"); - k = strcspn(b, "/"); - - if (j != k) - return false; - - if (memcmp(a, b, j) != 0) - return false; - - a += j; - b += k; - } -} - -int path_is_mount_point(const char *t, bool allow_symlink) { - char *parent; - int r; - struct file_handle *h; - int mount_id, mount_id_parent; - struct stat a, b; - - /* We are not actually interested in the file handles, but - * name_to_handle_at() also passes us the mount ID, hence use - * it but throw the handle away */ - - if (path_equal(t, "/")) - return 1; - - h = alloca(MAX_HANDLE_SZ); - h->handle_bytes = MAX_HANDLE_SZ; - - r = name_to_handle_at(AT_FDCWD, t, h, &mount_id, allow_symlink ? AT_SYMLINK_FOLLOW : 0); - if (r < 0) { - if (errno == ENOSYS || errno == ENOTSUP) - /* This kernel or file system does not support - * name_to_handle_at(), hence fallback to the - * traditional stat() logic */ - goto fallback; - - if (errno == ENOENT) - return 0; - - return -errno; - } - - r = path_get_parent(t, &parent); - if (r < 0) - return r; - - h->handle_bytes = MAX_HANDLE_SZ; - r = name_to_handle_at(AT_FDCWD, parent, h, &mount_id_parent, 0); - free(parent); - - if (r < 0) { - /* The parent can't do name_to_handle_at() but the - * directory we are interested in can? If so, it must - * be a mount point */ - if (errno == ENOTSUP) - return 1; - - return -errno; - } - - return mount_id != mount_id_parent; - -fallback: - if (allow_symlink) - r = stat(t, &a); - else - r = lstat(t, &a); - - if (r < 0) { - if (errno == ENOENT) - return 0; - - return -errno; - } - - r = path_get_parent(t, &parent); - if (r < 0) - return r; - - r = lstat(parent, &b); - free(parent); - - if (r < 0) - return -errno; - - return a.st_dev != b.st_dev; -} - -int path_is_read_only_fs(const char *path) { - struct statvfs st; - - assert(path); - - if (statvfs(path, &st) < 0) - return -errno; - - return !!(st.f_flag & ST_RDONLY); -} diff --git a/src/udev/path-util.h b/src/udev/path-util.h deleted file mode 100644 index e81821a28f..0000000000 --- a/src/udev/path-util.h +++ /dev/null @@ -1,45 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#ifndef foopathutilhfoo -#define foopathutilhfoo - -/*** - This file is part of systemd. - - Copyright 2010-2012 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "stdbool.h" - -bool is_path(const char *p); -char **path_split_and_make_absolute(const char *p); -char *path_get_file_name(const char *p); -int path_get_parent(const char *path, char **parent); -bool path_is_absolute(const char *p); -char *path_make_absolute(const char *p, const char *prefix); -char *path_make_absolute_cwd(const char *p); -char *path_kill_slashes(char *path); -char *path_startswith(const char *path, const char *prefix); -bool path_equal(const char *a, const char *b); - -char **path_strv_make_absolute_cwd(char **l); -char **path_strv_canonicalize(char **l); -char **path_strv_remove_empty(char **l); - -int path_is_mount_point(const char *path, bool allow_symlink); -int path_is_read_only_fs(const char *path); - -#endif diff --git a/src/udev/set.c b/src/udev/set.c deleted file mode 100644 index 5f83c50839..0000000000 --- a/src/udev/set.c +++ /dev/null @@ -1,130 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdlib.h> - -#include "set.h" -#include "hashmap.h" - -#define MAKE_SET(h) ((Set*) (h)) -#define MAKE_HASHMAP(s) ((Hashmap*) (s)) - -/* For now this is not much more than a wrapper around a hashmap */ - -Set *set_new(hash_func_t hash_func, compare_func_t compare_func) { - return MAKE_SET(hashmap_new(hash_func, compare_func)); -} - -void set_free(Set* s) { - hashmap_free(MAKE_HASHMAP(s)); -} - -void set_free_free(Set *s) { - hashmap_free_free(MAKE_HASHMAP(s)); -} - -int set_ensure_allocated(Set **s, hash_func_t hash_func, compare_func_t compare_func) { - return hashmap_ensure_allocated((Hashmap**) s, hash_func, compare_func); -} - -int set_put(Set *s, void *value) { - return hashmap_put(MAKE_HASHMAP(s), value, value); -} - -int set_replace(Set *s, void *value) { - return hashmap_replace(MAKE_HASHMAP(s), value, value); -} - -void *set_get(Set *s, void *value) { - return hashmap_get(MAKE_HASHMAP(s), value); -} - -bool set_contains(Set *s, void *value) { - return hashmap_contains(MAKE_HASHMAP(s), value); -} - -void *set_remove(Set *s, void *value) { - return hashmap_remove(MAKE_HASHMAP(s), value); -} - -int set_remove_and_put(Set *s, void *old_value, void *new_value) { - return hashmap_remove_and_put(MAKE_HASHMAP(s), old_value, new_value, new_value); -} - -unsigned set_size(Set *s) { - return hashmap_size(MAKE_HASHMAP(s)); -} - -bool set_isempty(Set *s) { - return hashmap_isempty(MAKE_HASHMAP(s)); -} - -void *set_iterate(Set *s, Iterator *i) { - return hashmap_iterate(MAKE_HASHMAP(s), i, NULL); -} - -void *set_iterate_backwards(Set *s, Iterator *i) { - return hashmap_iterate_backwards(MAKE_HASHMAP(s), i, NULL); -} - -void *set_iterate_skip(Set *s, void *value, Iterator *i) { - return hashmap_iterate_skip(MAKE_HASHMAP(s), value, i); -} - -void *set_steal_first(Set *s) { - return hashmap_steal_first(MAKE_HASHMAP(s)); -} - -void* set_first(Set *s) { - return hashmap_first(MAKE_HASHMAP(s)); -} - -void* set_last(Set *s) { - return hashmap_last(MAKE_HASHMAP(s)); -} - -int set_merge(Set *s, Set *other) { - return hashmap_merge(MAKE_HASHMAP(s), MAKE_HASHMAP(other)); -} - -void set_move(Set *s, Set *other) { - return hashmap_move(MAKE_HASHMAP(s), MAKE_HASHMAP(other)); -} - -int set_move_one(Set *s, Set *other, void *value) { - return hashmap_move_one(MAKE_HASHMAP(s), MAKE_HASHMAP(other), value); -} - -Set* set_copy(Set *s) { - return MAKE_SET(hashmap_copy(MAKE_HASHMAP(s))); -} - -void set_clear(Set *s) { - hashmap_clear(MAKE_HASHMAP(s)); -} - -void set_clear_free(Set *s) { - hashmap_clear_free(MAKE_HASHMAP(s)); -} - -char **set_get_strv(Set *s) { - return hashmap_get_strv(MAKE_HASHMAP(s)); -} diff --git a/src/udev/set.h b/src/udev/set.h deleted file mode 100644 index 9162e2ae80..0000000000 --- a/src/udev/set.h +++ /dev/null @@ -1,71 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -/* Pretty straightforward set implementation. Internally based on the - * hashmap. That means that as a minor optimization a NULL set - * object will be treated as empty set for all read - * operations. That way it is not necessary to instantiate an object - * for each set use. */ - -#include "hashmap.h" - -typedef struct Set Set; - -Set *set_new(hash_func_t hash_func, compare_func_t compare_func); -void set_free(Set* s); -void set_free_free(Set *s); -Set* set_copy(Set *s); -int set_ensure_allocated(Set **s, hash_func_t hash_func, compare_func_t compare_func); - -int set_put(Set *s, void *value); -int set_replace(Set *s, void *value); -void *set_get(Set *s, void *value); -bool set_contains(Set *s, void *value); -void *set_remove(Set *s, void *value); -int set_remove_and_put(Set *s, void *old_value, void *new_value); - -int set_merge(Set *s, Set *other); -void set_move(Set *s, Set *other); -int set_move_one(Set *s, Set *other, void *value); - -unsigned set_size(Set *s); -bool set_isempty(Set *s); - -void *set_iterate(Set *s, Iterator *i); -void *set_iterate_backwards(Set *s, Iterator *i); -void *set_iterate_skip(Set *s, void *value, Iterator *i); - -void set_clear(Set *s); -void set_clear_free(Set *s); - -void *set_steal_first(Set *s); -void* set_first(Set *s); -void* set_last(Set *s); - -char **set_get_strv(Set *s); - -#define SET_FOREACH(e, s, i) \ - for ((i) = ITERATOR_FIRST, (e) = set_iterate((s), &(i)); (e); (e) = set_iterate((s), &(i))) - -#define SET_FOREACH_BACKWARDS(e, s, i) \ - for ((i) = ITERATOR_LAST, (e) = set_iterate_backwards((s), &(i)); (e); (e) = set_iterate_backwards((s), &(i))) diff --git a/src/udev/socket-util.h b/src/udev/socket-util.h deleted file mode 100644 index 04cfb83f5a..0000000000 --- a/src/udev/socket-util.h +++ /dev/null @@ -1,99 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <sys/socket.h> -#include <netinet/in.h> -#include <sys/un.h> -#include <net/if.h> -#include <asm/types.h> -#include <linux/netlink.h> - -#include "macro.h" -#include "util.h" - -union sockaddr_union { - struct sockaddr sa; - struct sockaddr_in in4; - struct sockaddr_in6 in6; - struct sockaddr_un un; - struct sockaddr_nl nl; - struct sockaddr_storage storage; -}; - -typedef struct SocketAddress { - union sockaddr_union sockaddr; - - /* We store the size here explicitly due to the weird - * sockaddr_un semantics for abstract sockets */ - socklen_t size; - - /* Socket type, i.e. SOCK_STREAM, SOCK_DGRAM, ... */ - int type; - - /* Socket protocol, IPPROTO_xxx, usually 0, except for netlink */ - int protocol; -} SocketAddress; - -typedef enum SocketAddressBindIPv6Only { - SOCKET_ADDRESS_DEFAULT, - SOCKET_ADDRESS_BOTH, - SOCKET_ADDRESS_IPV6_ONLY, - _SOCKET_ADDRESS_BIND_IPV6_ONLY_MAX, - _SOCKET_ADDRESS_BIND_IPV6_ONLY_INVALID = -1 -} SocketAddressBindIPv6Only; - -#define socket_address_family(a) ((a)->sockaddr.sa.sa_family) - -int socket_address_parse(SocketAddress *a, const char *s); -int socket_address_parse_netlink(SocketAddress *a, const char *s); -int socket_address_print(const SocketAddress *a, char **p); -int socket_address_verify(const SocketAddress *a); - -bool socket_address_can_accept(const SocketAddress *a); - -int socket_address_listen( - const SocketAddress *a, - int backlog, - SocketAddressBindIPv6Only only, - const char *bind_to_device, - bool free_bind, - bool transparent, - mode_t directory_mode, - mode_t socket_mode, - const char *label, - int *ret); - -bool socket_address_is(const SocketAddress *a, const char *s, int type); -bool socket_address_is_netlink(const SocketAddress *a, const char *s); - -bool socket_address_equal(const SocketAddress *a, const SocketAddress *b); - -bool socket_address_needs_mount(const SocketAddress *a, const char *prefix); - -const char* socket_address_bind_ipv6_only_to_string(SocketAddressBindIPv6Only b); -SocketAddressBindIPv6Only socket_address_bind_ipv6_only_from_string(const char *s); - -int netlink_family_to_string_alloc(int b, char **s); -int netlink_family_from_string(const char *s); - -bool socket_ipv6_is_supported(void); diff --git a/src/udev/sparse-endian.h b/src/udev/sparse-endian.h deleted file mode 100644 index eb4dbf3615..0000000000 --- a/src/udev/sparse-endian.h +++ /dev/null @@ -1,87 +0,0 @@ -/* Copyright (c) 2012 Josh Triplett <josh@joshtriplett.org> - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ -#ifndef SPARSE_ENDIAN_H -#define SPARSE_ENDIAN_H - -#include <endian.h> -#include <stdint.h> - -#ifdef __CHECKER__ -#define __bitwise __attribute__((bitwise)) -#define __force __attribute__((force)) -#else -#define __bitwise -#define __force -#endif - -typedef uint16_t __bitwise le16_t; -typedef uint16_t __bitwise be16_t; -typedef uint32_t __bitwise le32_t; -typedef uint32_t __bitwise be32_t; -typedef uint64_t __bitwise le64_t; -typedef uint64_t __bitwise be64_t; - -#undef htobe16 -#undef htole16 -#undef be16toh -#undef le16toh -#undef htobe32 -#undef htole32 -#undef be32toh -#undef le32toh -#undef htobe64 -#undef htole64 -#undef be64toh -#undef le64toh - -#if __BYTE_ORDER == __LITTLE_ENDIAN -#define bswap_16_on_le(x) __bswap_16(x) -#define bswap_32_on_le(x) __bswap_32(x) -#define bswap_64_on_le(x) __bswap_64(x) -#define bswap_16_on_be(x) (x) -#define bswap_32_on_be(x) (x) -#define bswap_64_on_be(x) (x) -#elif __BYTE_ORDER == __BIG_ENDIAN -#define bswap_16_on_le(x) (x) -#define bswap_32_on_le(x) (x) -#define bswap_64_on_le(x) (x) -#define bswap_16_on_be(x) __bswap_16(x) -#define bswap_32_on_be(x) __bswap_32(x) -#define bswap_64_on_be(x) __bswap_64(x) -#endif - -static inline le16_t htole16(uint16_t value) { return (le16_t __force) bswap_16_on_be(value); } -static inline le32_t htole32(uint32_t value) { return (le32_t __force) bswap_32_on_be(value); } -static inline le64_t htole64(uint64_t value) { return (le64_t __force) bswap_64_on_be(value); } - -static inline be16_t htobe16(uint16_t value) { return (be16_t __force) bswap_16_on_le(value); } -static inline be32_t htobe32(uint32_t value) { return (be32_t __force) bswap_32_on_le(value); } -static inline be64_t htobe64(uint64_t value) { return (be64_t __force) bswap_64_on_le(value); } - -static inline uint16_t le16toh(le16_t value) { return bswap_16_on_be((uint16_t __force)value); } -static inline uint32_t le32toh(le32_t value) { return bswap_32_on_be((uint32_t __force)value); } -static inline uint64_t le64toh(le64_t value) { return bswap_64_on_be((uint64_t __force)value); } - -static inline uint16_t be16toh(be16_t value) { return bswap_16_on_le((uint16_t __force)value); } -static inline uint32_t be32toh(be32_t value) { return bswap_32_on_le((uint32_t __force)value); } -static inline uint64_t be64toh(be64_t value) { return bswap_64_on_le((uint64_t __force)value); } - -#endif /* SPARSE_ENDIAN_H */ diff --git a/src/udev/strbuf.c b/src/udev/strbuf.c deleted file mode 100644 index 915cd3ac99..0000000000 --- a/src/udev/strbuf.c +++ /dev/null @@ -1,176 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2012 Kay Sievers <kay@vrfy.org> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdlib.h> -#include <string.h> - -#include "util.h" -#include "strbuf.h" - -/* - * Strbuf stores given strings in a single continous allocated memory - * area. Identical strings are de-duplicated and return the same offset - * as the first string stored. If the tail of a string already exists - * in the buffer, the tail is returned. - * - * A trie (http://en.wikipedia.org/wiki/Trie) is used to maintain the - * information about the stored strings. - * - * Example of udev rules: - * $ ./udevadm test . - * ... - * read rules file: /usr/lib/udev/rules.d/99-systemd.rules - * rules contain 196608 bytes tokens (16384 * 12 bytes), 39742 bytes strings - * 23939 strings (207859 bytes), 20404 de-duplicated (171653 bytes), 3536 trie nodes used - * ... - */ - -struct strbuf *strbuf_new(void) { - struct strbuf *str; - - str = new0(struct strbuf, 1); - if (!str) - return NULL; - - str->buf = new0(char, 1); - if (!str->buf) - goto err; - str->len = 1; - - str->root = new0(struct strbuf_node, 1); - if (!str->root) - goto err; - str->nodes_count = 1; - return str; -err: - free(str->buf); - free(str->root); - free(str); - return NULL; -} - -static void strbuf_node_cleanup(struct strbuf_node *node) { - size_t i; - - for (i = 0; i < node->children_count; i++) - strbuf_node_cleanup(node->children[i].child); - free(node->children); - free(node); -} - -/* clean up trie data, leave only the string buffer */ -void strbuf_complete(struct strbuf *str) { - if (!str) - return; - if (str->root) - strbuf_node_cleanup(str->root); - str->root = NULL; -} - -/* clean up everything */ -void strbuf_cleanup(struct strbuf *str) { - if (!str) - return; - if (str->root) - strbuf_node_cleanup(str->root); - free(str->buf); - free(str); -} - -static int strbuf_children_cmp(const void *v1, const void *v2) { - const struct strbuf_child_entry *n1 = v1; - const struct strbuf_child_entry *n2 = v2; - - return n1->c - n2->c; -} - -/* add string, return the index/offset into the buffer */ -ssize_t strbuf_add_string(struct strbuf *str, const char *s, size_t len) { - uint8_t c; - struct strbuf_node *node; - size_t depth; - char *buf_new; - struct strbuf_child_entry *child; - struct strbuf_node *node_child; - ssize_t off; - - if (!str->root) - return -EINVAL; - - /* search string; start from last character to find possibly matching tails */ - if (len == 0) - return 0; - str->in_count++; - str->in_len += len; - - node = str->root; - c = s[len-1]; - for (depth = 0; depth <= len; depth++) { - struct strbuf_child_entry search; - - /* match against current node */ - off = node->value_off + node->value_len - len; - if (depth == len || (node->value_len >= len && memcmp(str->buf + off, s, len) == 0)) { - str->dedup_len += len; - str->dedup_count++; - return off; - } - - /* lookup child node */ - c = s[len - 1 - depth]; - search.c = c; - child = bsearch(&search, node->children, node->children_count, sizeof(struct strbuf_child_entry), - strbuf_children_cmp); - if (!child) - break; - node = child->child; - } - - /* add new string */ - buf_new = realloc(str->buf, str->len + len+1); - if (!buf_new) - return -ENOMEM; - str->buf = buf_new; - off = str->len; - memcpy(str->buf + off, s, len); - str->len += len; - str->buf[str->len++] = '\0'; - - /* new node */ - node_child = new0(struct strbuf_node, 1); - if (!node_child) - return -ENOMEM; - str->nodes_count++; - node_child->value_off = off; - node_child->value_len = len; - - /* extend array, add new entry, sort for bisection */ - child = realloc(node->children, (node->children_count + 1) * sizeof(struct strbuf_child_entry)); - if (!child) - return -ENOMEM; - node->children = child; - node->children[node->children_count].c = c; - node->children[node->children_count].child = node_child; - node->children_count++; - qsort(node->children, node->children_count, sizeof(struct strbuf_child_entry), strbuf_children_cmp); - - return off; -} diff --git a/src/udev/strbuf.h b/src/udev/strbuf.h deleted file mode 100644 index 2347fd4328..0000000000 --- a/src/udev/strbuf.h +++ /dev/null @@ -1,56 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2012 Kay Sievers <kay@vrfy.org> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdarg.h> -#include <stdint.h> -#include <stdbool.h> - -struct strbuf { - char *buf; - size_t len; - struct strbuf_node *root; - - size_t nodes_count; - size_t in_count; - size_t in_len; - size_t dedup_len; - size_t dedup_count; -}; - -struct strbuf_node { - size_t value_off; - size_t value_len; - - struct strbuf_child_entry *children; - uint8_t children_count; -}; - -struct strbuf_child_entry { - uint8_t c; - struct strbuf_node *child; -}; - -struct strbuf *strbuf_new(void); -ssize_t strbuf_add_string(struct strbuf *str, const char *s, size_t len); -void strbuf_complete(struct strbuf *str); -void strbuf_cleanup(struct strbuf *str); diff --git a/src/udev/strv.c b/src/udev/strv.c deleted file mode 100644 index 6b76d0eaef..0000000000 --- a/src/udev/strv.c +++ /dev/null @@ -1,750 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <stdlib.h> -#include <stdarg.h> -#include <string.h> -#include <errno.h> - -#include "util.h" -#include "strv.h" - -char *strv_find(char **l, const char *name) { - char **i; - - assert(name); - - STRV_FOREACH(i, l) - if (streq(*i, name)) - return *i; - - return NULL; -} - -char *strv_find_prefix(char **l, const char *name) { - char **i; - - assert(name); - - STRV_FOREACH(i, l) - if (startswith(*i, name)) - return *i; - - return NULL; -} - -void strv_free(char **l) { - char **k; - - if (!l) - return; - - for (k = l; *k; k++) - free(*k); - - free(l); -} - -void strv_freep(char ***l) { - if (!l) - return; - - strv_free(*l); - *l = NULL; -} - -char **strv_copy(char **l) { - char **r, **k; - - k = r = new(char*, strv_length(l) + 1); - if (!r) - return NULL; - - if (l) - for (; *l; k++, l++) { - *k = strdup(*l); - if (!*k) { - strv_free(r); - return NULL; - } - } - - *k = NULL; - return r; -} - -unsigned strv_length(char **l) { - unsigned n = 0; - - if (!l) - return 0; - - for (; *l; l++) - n++; - - return n; -} - -char **strv_new_ap(const char *x, va_list ap) { - const char *s; - char **a; - unsigned n = 0, i = 0; - va_list aq; - - /* As a special trick we ignore all listed strings that equal - * (const char*) -1. This is supposed to be used with the - * STRV_IFNOTNULL() macro to include possibly NULL strings in - * the string list. */ - - if (x) { - n = x == (const char*) -1 ? 0 : 1; - - va_copy(aq, ap); - while ((s = va_arg(aq, const char*))) { - if (s == (const char*) -1) - continue; - - n++; - } - - va_end(aq); - } - - a = new(char*, n+1); - if (!a) - return NULL; - - if (x) { - if (x != (const char*) -1) { - a[i] = strdup(x); - if (!a[i]) - goto fail; - i++; - } - - while ((s = va_arg(ap, const char*))) { - - if (s == (const char*) -1) - continue; - - a[i] = strdup(s); - if (!a[i]) - goto fail; - - i++; - } - } - - a[i] = NULL; - - return a; - -fail: - strv_free(a); - return NULL; -} - -char **strv_new(const char *x, ...) { - char **r; - va_list ap; - - va_start(ap, x); - r = strv_new_ap(x, ap); - va_end(ap); - - return r; -} - -char **strv_merge(char **a, char **b) { - char **r, **k; - - if (!a) - return strv_copy(b); - - if (!b) - return strv_copy(a); - - r = new(char*, strv_length(a) + strv_length(b) + 1); - if (!r) - return NULL; - - for (k = r; *a; k++, a++) { - *k = strdup(*a); - if (!*k) - goto fail; - } - - for (; *b; k++, b++) { - *k = strdup(*b); - if (!*k) - goto fail; - } - - *k = NULL; - return r; - -fail: - strv_free(r); - return NULL; -} - -char **strv_merge_concat(char **a, char **b, const char *suffix) { - char **r, **k; - - /* Like strv_merge(), but appends suffix to all strings in b, before adding */ - - if (!b) - return strv_copy(a); - - r = new(char*, strv_length(a) + strv_length(b) + 1); - if (!r) - return NULL; - - k = r; - if (a) - for (; *a; k++, a++) { - *k = strdup(*a); - if (!*k) - goto fail; - } - - for (; *b; k++, b++) { - *k = strappend(*b, suffix); - if (!*k) - goto fail; - } - - *k = NULL; - return r; - -fail: - strv_free(r); - return NULL; - -} - -char **strv_split(const char *s, const char *separator) { - char *state; - char *w; - size_t l; - unsigned n, i; - char **r; - - assert(s); - - n = 0; - FOREACH_WORD_SEPARATOR(w, l, s, separator, state) - n++; - - r = new(char*, n+1); - if (!r) - return NULL; - - i = 0; - FOREACH_WORD_SEPARATOR(w, l, s, separator, state) { - r[i] = strndup(w, l); - if (!r[i]) { - strv_free(r); - return NULL; - } - - i++; - } - - r[i] = NULL; - return r; -} - -char **strv_split_quoted(const char *s) { - char *state; - char *w; - size_t l; - unsigned n, i; - char **r; - - assert(s); - - n = 0; - FOREACH_WORD_QUOTED(w, l, s, state) - n++; - - r = new(char*, n+1); - if (!r) - return NULL; - - i = 0; - FOREACH_WORD_QUOTED(w, l, s, state) { - r[i] = cunescape_length(w, l); - if (!r[i]) { - strv_free(r); - return NULL; - } - i++; - } - - r[i] = NULL; - return r; -} - -char *strv_join(char **l, const char *separator) { - char *r, *e; - char **s; - size_t n, k; - - if (!separator) - separator = " "; - - k = strlen(separator); - - n = 0; - STRV_FOREACH(s, l) { - if (n != 0) - n += k; - n += strlen(*s); - } - - r = new(char, n+1); - if (!r) - return NULL; - - e = r; - STRV_FOREACH(s, l) { - if (e != r) - e = stpcpy(e, separator); - - e = stpcpy(e, *s); - } - - *e = 0; - - return r; -} - -char **strv_append(char **l, const char *s) { - char **r, **k; - - if (!l) - return strv_new(s, NULL); - - if (!s) - return strv_copy(l); - - r = new(char*, strv_length(l)+2); - if (!r) - return NULL; - - for (k = r; *l; k++, l++) { - *k = strdup(*l); - if (!*k) - goto fail; - } - - k[0] = strdup(s); - if (!k[0]) - goto fail; - - k[1] = NULL; - return r; - -fail: - strv_free(r); - return NULL; -} - -char **strv_uniq(char **l) { - char **i; - - /* Drops duplicate entries. The first identical string will be - * kept, the others dropped */ - - STRV_FOREACH(i, l) - strv_remove(i+1, *i); - - return l; -} - -char **strv_remove(char **l, const char *s) { - char **f, **t; - - if (!l) - return NULL; - - assert(s); - - /* Drops every occurrence of s in the string list, edits - * in-place. */ - - for (f = t = l; *f; f++) { - - if (streq(*f, s)) { - free(*f); - continue; - } - - *(t++) = *f; - } - - *t = NULL; - return l; -} - -char **strv_remove_prefix(char **l, const char *s) { - char **f, **t; - - if (!l) - return NULL; - - assert(s); - - /* Drops every occurrence of a string prefixed with s in the - * string list, edits in-place. */ - - for (f = t = l; *f; f++) { - - if (startswith(*f, s)) { - free(*f); - continue; - } - - *(t++) = *f; - } - - *t = NULL; - return l; -} - -static int env_append(char **r, char ***k, char **a) { - assert(r); - assert(k); - - if (!a) - return 0; - - /* Add the entries of a to *k unless they already exist in *r - * in which case they are overridden instead. This assumes - * there is enough space in the r array. */ - - for (; *a; a++) { - char **j; - size_t n; - - n = strcspn(*a, "="); - - if ((*a)[n] == '=') - n++; - - for (j = r; j < *k; j++) - if (strncmp(*j, *a, n) == 0) - break; - - if (j >= *k) - (*k)++; - else - free(*j); - - *j = strdup(*a); - if (!*j) - return -ENOMEM; - } - - return 0; -} - -char **strv_env_merge(unsigned n_lists, ...) { - size_t n = 0; - char **l, **k, **r; - va_list ap; - unsigned i; - - /* Merges an arbitrary number of environment sets */ - - va_start(ap, n_lists); - for (i = 0; i < n_lists; i++) { - l = va_arg(ap, char**); - n += strv_length(l); - } - va_end(ap); - - r = new(char*, n+1); - if (!r) - return NULL; - - k = r; - - va_start(ap, n_lists); - for (i = 0; i < n_lists; i++) { - l = va_arg(ap, char**); - if (env_append(r, &k, l) < 0) - goto fail; - } - va_end(ap); - - *k = NULL; - - return r; - -fail: - va_end(ap); - strv_free(r); - - return NULL; -} - -static bool env_match(const char *t, const char *pattern) { - assert(t); - assert(pattern); - - /* pattern a matches string a - * a matches a= - * a matches a=b - * a= matches a= - * a=b matches a=b - * a= does not match a - * a=b does not match a= - * a=b does not match a - * a=b does not match a=c */ - - if (streq(t, pattern)) - return true; - - if (!strchr(pattern, '=')) { - size_t l = strlen(pattern); - - return strncmp(t, pattern, l) == 0 && t[l] == '='; - } - - return false; -} - -char **strv_env_delete(char **x, unsigned n_lists, ...) { - size_t n, i = 0; - char **k, **r; - va_list ap; - - /* Deletes every entry from x that is mentioned in the other - * string lists */ - - n = strv_length(x); - - r = new(char*, n+1); - if (!r) - return NULL; - - STRV_FOREACH(k, x) { - unsigned v; - - va_start(ap, n_lists); - for (v = 0; v < n_lists; v++) { - char **l, **j; - - l = va_arg(ap, char**); - STRV_FOREACH(j, l) - if (env_match(*k, *j)) - goto skip; - } - va_end(ap); - - r[i] = strdup(*k); - if (!r[i]) { - strv_free(r); - return NULL; - } - - i++; - continue; - - skip: - va_end(ap); - } - - r[i] = NULL; - - assert(i <= n); - - return r; -} - -char **strv_env_unset(char **l, const char *p) { - - char **f, **t; - - if (!l) - return NULL; - - assert(p); - - /* Drops every occurrence of the env var setting p in the - * string list. edits in-place. */ - - for (f = t = l; *f; f++) { - - if (env_match(*f, p)) { - free(*f); - continue; - } - - *(t++) = *f; - } - - *t = NULL; - return l; -} - -char **strv_env_set(char **x, const char *p) { - - char **k, **r; - char* m[2] = { (char*) p, NULL }; - - /* Overrides the env var setting of p, returns a new copy */ - - r = new(char*, strv_length(x)+2); - if (!r) - return NULL; - - k = r; - if (env_append(r, &k, x) < 0) - goto fail; - - if (env_append(r, &k, m) < 0) - goto fail; - - *k = NULL; - - return r; - -fail: - strv_free(r); - return NULL; - -} - -char *strv_env_get_with_length(char **l, const char *name, size_t k) { - char **i; - - assert(name); - - STRV_FOREACH(i, l) - if (strncmp(*i, name, k) == 0 && - (*i)[k] == '=') - return *i + k + 1; - - return NULL; -} - -char *strv_env_get(char **l, const char *name) { - return strv_env_get_with_length(l, name, strlen(name)); -} - -char **strv_env_clean(char **l) { - char **r, **ret; - - for (r = ret = l; *l; l++) { - const char *equal; - - equal = strchr(*l, '='); - - if (equal && equal[1] == 0) { - free(*l); - continue; - } - - *(r++) = *l; - } - - *r = NULL; - - return ret; -} - -char **strv_parse_nulstr(const char *s, size_t l) { - const char *p; - unsigned c = 0, i = 0; - char **v; - - assert(s || l <= 0); - - if (l <= 0) - return strv_new(NULL, NULL); - - for (p = s; p < s + l; p++) - if (*p == 0) - c++; - - if (s[l-1] != 0) - c++; - - v = new0(char*, c+1); - if (!v) - return NULL; - - p = s; - while (p < s + l) { - const char *e; - - e = memchr(p, 0, s + l - p); - - v[i] = strndup(p, e ? e - p : s + l - p); - if (!v[i]) { - strv_free(v); - return NULL; - } - - i++; - - if (!e) - break; - - p = e + 1; - } - - assert(i == c); - - return v; -} - -bool strv_overlap(char **a, char **b) { - char **i, **j; - - STRV_FOREACH(i, a) { - STRV_FOREACH(j, b) { - if (streq(*i, *j)) - return true; - } - } - - return false; -} - -static int str_compare(const void *_a, const void *_b) { - const char **a = (const char**) _a, **b = (const char**) _b; - - return strcmp(*a, *b); -} - -char **strv_sort(char **l) { - - if (strv_isempty(l)) - return l; - - qsort(l, strv_length(l), sizeof(char*), str_compare); - return l; -} diff --git a/src/udev/strv.h b/src/udev/strv.h deleted file mode 100644 index 45558d8960..0000000000 --- a/src/udev/strv.h +++ /dev/null @@ -1,84 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdarg.h> -#include <stdbool.h> - -#include "macro.h" - -char *strv_find(char **l, const char *name); -char *strv_find_prefix(char **l, const char *name); - -void strv_free(char **l); -void strv_freep(char ***l); -char **strv_copy(char **l) _malloc_; -unsigned strv_length(char **l); - -char **strv_merge(char **a, char **b); -char **strv_merge_concat(char **a, char **b, const char *suffix); -char **strv_append(char **l, const char *s); - -char **strv_remove(char **l, const char *s); -char **strv_remove_prefix(char **l, const char *s); -char **strv_uniq(char **l); - -#define strv_contains(l, s) (!!strv_find((l), (s))) - -char **strv_new(const char *x, ...) _sentinel_ _malloc_; -char **strv_new_ap(const char *x, va_list ap) _malloc_; - -static inline const char* STRV_IFNOTNULL(const char *x) { - return x ? x : (const char *) -1; -} - -static inline bool strv_isempty(char **l) { - return !l || !*l; -} - -char **strv_split(const char *s, const char *separator) _malloc_; -char **strv_split_quoted(const char *s) _malloc_; - -char *strv_join(char **l, const char *separator) _malloc_; - -char **strv_env_merge(unsigned n_lists, ...); -char **strv_env_delete(char **x, unsigned n_lists, ...); - -char **strv_env_set(char **x, const char *p); -char **strv_env_unset(char **l, const char *p); - -char *strv_env_get_with_length(char **l, const char *name, size_t k); -char *strv_env_get(char **x, const char *n); - -char **strv_env_clean(char **l); - -char **strv_parse_nulstr(const char *s, size_t l); - -bool strv_overlap(char **a, char **b); - -#define STRV_FOREACH(s, l) \ - for ((s) = (l); (s) && *(s); (s)++) - -#define STRV_FOREACH_BACKWARDS(s, l) \ - for (; (l) && ((s) >= (l)); (s)--) - -char **strv_sort(char **l); diff --git a/src/udev/util.c b/src/udev/util.c deleted file mode 100644 index d8c5bb2e1e..0000000000 --- a/src/udev/util.c +++ /dev/null @@ -1,6255 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include <stdlib.h> -#include <signal.h> -#include <stdio.h> -#include <syslog.h> -#include <sched.h> -#include <sys/resource.h> -#include <linux/sched.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <dirent.h> -#include <sys/ioctl.h> -#include <linux/vt.h> -#include <linux/tiocl.h> -#include <termios.h> -#include <stdarg.h> -#include <sys/inotify.h> -#include <sys/poll.h> -#include <libgen.h> -#include <ctype.h> -#include <sys/prctl.h> -#include <sys/utsname.h> -#include <pwd.h> -#include <netinet/ip.h> -#include <linux/kd.h> -#include <dlfcn.h> -#include <sys/wait.h> -#include <sys/time.h> -#include <glob.h> -#include <grp.h> -#include <sys/mman.h> -#include <sys/vfs.h> -#include <linux/magic.h> -#include <limits.h> -#include <langinfo.h> -#include <locale.h> - -#include "macro.h" -#include "util.h" -#include "ioprio.h" -#include "missing.h" -#include "log.h" -#include "strv.h" -#include "label.h" -#include "path-util.h" -#include "exit-status.h" -#include "hashmap.h" - -int saved_argc = 0; -char **saved_argv = NULL; - -static volatile unsigned cached_columns = 0; -static volatile unsigned cached_lines = 0; - -bool is_efiboot(void) { - return access("/sys/firmware/efi", F_OK) >= 0; -} - -size_t page_size(void) { - static __thread size_t pgsz = 0; - long r; - - if (_likely_(pgsz > 0)) - return pgsz; - - r = sysconf(_SC_PAGESIZE); - assert(r > 0); - - pgsz = (size_t) r; - return pgsz; -} - -bool streq_ptr(const char *a, const char *b) { - - /* Like streq(), but tries to make sense of NULL pointers */ - - if (a && b) - return streq(a, b); - - if (!a && !b) - return true; - - return false; -} - -usec_t now(clockid_t clock_id) { - struct timespec ts; - - assert_se(clock_gettime(clock_id, &ts) == 0); - - return timespec_load(&ts); -} - -dual_timestamp* dual_timestamp_get(dual_timestamp *ts) { - assert(ts); - - ts->realtime = now(CLOCK_REALTIME); - ts->monotonic = now(CLOCK_MONOTONIC); - - return ts; -} - -dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) { - int64_t delta; - assert(ts); - - ts->realtime = u; - - if (u == 0) - ts->monotonic = 0; - else { - delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u; - - ts->monotonic = now(CLOCK_MONOTONIC); - - if ((int64_t) ts->monotonic > delta) - ts->monotonic -= delta; - else - ts->monotonic = 0; - } - - return ts; -} - -usec_t timespec_load(const struct timespec *ts) { - assert(ts); - - if (ts->tv_sec == (time_t) -1 && - ts->tv_nsec == (long) -1) - return (usec_t) -1; - - if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC) - return (usec_t) -1; - - return - (usec_t) ts->tv_sec * USEC_PER_SEC + - (usec_t) ts->tv_nsec / NSEC_PER_USEC; -} - -struct timespec *timespec_store(struct timespec *ts, usec_t u) { - assert(ts); - - if (u == (usec_t) -1) { - ts->tv_sec = (time_t) -1; - ts->tv_nsec = (long) -1; - return ts; - } - - ts->tv_sec = (time_t) (u / USEC_PER_SEC); - ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC); - - return ts; -} - -usec_t timeval_load(const struct timeval *tv) { - assert(tv); - - if (tv->tv_sec == (time_t) -1 && - tv->tv_usec == (suseconds_t) -1) - return (usec_t) -1; - - if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC) - return (usec_t) -1; - - return - (usec_t) tv->tv_sec * USEC_PER_SEC + - (usec_t) tv->tv_usec; -} - -struct timeval *timeval_store(struct timeval *tv, usec_t u) { - assert(tv); - - if (u == (usec_t) -1) { - tv->tv_sec = (time_t) -1; - tv->tv_usec = (suseconds_t) -1; - return tv; - } - - tv->tv_sec = (time_t) (u / USEC_PER_SEC); - tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC); - - return tv; -} - -char* endswith(const char *s, const char *postfix) { - size_t sl, pl; - - assert(s); - assert(postfix); - - sl = strlen(s); - pl = strlen(postfix); - - if (pl == 0) - return (char*) s + sl; - - if (sl < pl) - return NULL; - - if (memcmp(s + sl - pl, postfix, pl) != 0) - return NULL; - - return (char*) s + sl - pl; -} - -char* startswith(const char *s, const char *prefix) { - const char *a, *b; - - assert(s); - assert(prefix); - - a = s, b = prefix; - for (;;) { - if (*b == 0) - return (char*) a; - if (*a != *b) - return NULL; - - a++, b++; - } -} - -char* startswith_no_case(const char *s, const char *prefix) { - const char *a, *b; - - assert(s); - assert(prefix); - - a = s, b = prefix; - for (;;) { - if (*b == 0) - return (char*) a; - if (tolower(*a) != tolower(*b)) - return NULL; - - a++, b++; - } -} - -bool first_word(const char *s, const char *word) { - size_t sl, wl; - - assert(s); - assert(word); - - sl = strlen(s); - wl = strlen(word); - - if (sl < wl) - return false; - - if (wl == 0) - return true; - - if (memcmp(s, word, wl) != 0) - return false; - - return s[wl] == 0 || - strchr(WHITESPACE, s[wl]); -} - -int close_nointr(int fd) { - assert(fd >= 0); - - for (;;) { - int r; - - r = close(fd); - if (r >= 0) - return r; - - if (errno != EINTR) - return -errno; - } -} - -void close_nointr_nofail(int fd) { - int saved_errno = errno; - - /* like close_nointr() but cannot fail, and guarantees errno - * is unchanged */ - - assert_se(close_nointr(fd) == 0); - - errno = saved_errno; -} - -void close_many(const int fds[], unsigned n_fd) { - unsigned i; - - for (i = 0; i < n_fd; i++) - close_nointr_nofail(fds[i]); -} - -int parse_boolean(const char *v) { - assert(v); - - if (streq(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on")) - return 1; - else if (streq(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off")) - return 0; - - return -EINVAL; -} - -int parse_pid(const char *s, pid_t* ret_pid) { - unsigned long ul = 0; - pid_t pid; - int r; - - assert(s); - assert(ret_pid); - - r = safe_atolu(s, &ul); - if (r < 0) - return r; - - pid = (pid_t) ul; - - if ((unsigned long) pid != ul) - return -ERANGE; - - if (pid <= 0) - return -ERANGE; - - *ret_pid = pid; - return 0; -} - -int parse_uid(const char *s, uid_t* ret_uid) { - unsigned long ul = 0; - uid_t uid; - int r; - - assert(s); - assert(ret_uid); - - r = safe_atolu(s, &ul); - if (r < 0) - return r; - - uid = (uid_t) ul; - - if ((unsigned long) uid != ul) - return -ERANGE; - - *ret_uid = uid; - return 0; -} - -int safe_atou(const char *s, unsigned *ret_u) { - char *x = NULL; - unsigned long l; - - assert(s); - assert(ret_u); - - errno = 0; - l = strtoul(s, &x, 0); - - if (!x || x == s || *x || errno) - return errno ? -errno : -EINVAL; - - if ((unsigned long) (unsigned) l != l) - return -ERANGE; - - *ret_u = (unsigned) l; - return 0; -} - -int safe_atoi(const char *s, int *ret_i) { - char *x = NULL; - long l; - - assert(s); - assert(ret_i); - - errno = 0; - l = strtol(s, &x, 0); - - if (!x || x == s || *x || errno) - return errno ? -errno : -EINVAL; - - if ((long) (int) l != l) - return -ERANGE; - - *ret_i = (int) l; - return 0; -} - -int safe_atollu(const char *s, long long unsigned *ret_llu) { - char *x = NULL; - unsigned long long l; - - assert(s); - assert(ret_llu); - - errno = 0; - l = strtoull(s, &x, 0); - - if (!x || x == s || *x || errno) - return errno ? -errno : -EINVAL; - - *ret_llu = l; - return 0; -} - -int safe_atolli(const char *s, long long int *ret_lli) { - char *x = NULL; - long long l; - - assert(s); - assert(ret_lli); - - errno = 0; - l = strtoll(s, &x, 0); - - if (!x || x == s || *x || errno) - return errno ? -errno : -EINVAL; - - *ret_lli = l; - return 0; -} - -/* Split a string into words. */ -char *split(const char *c, size_t *l, const char *separator, char **state) { - char *current; - - current = *state ? *state : (char*) c; - - if (!*current || *c == 0) - return NULL; - - current += strspn(current, separator); - *l = strcspn(current, separator); - *state = current+*l; - - return (char*) current; -} - -/* Split a string into words, but consider strings enclosed in '' and - * "" as words even if they include spaces. */ -char *split_quoted(const char *c, size_t *l, char **state) { - char *current, *e; - bool escaped = false; - - current = *state ? *state : (char*) c; - - if (!*current || *c == 0) - return NULL; - - current += strspn(current, WHITESPACE); - - if (*current == '\'') { - current ++; - - for (e = current; *e; e++) { - if (escaped) - escaped = false; - else if (*e == '\\') - escaped = true; - else if (*e == '\'') - break; - } - - *l = e-current; - *state = *e == 0 ? e : e+1; - } else if (*current == '\"') { - current ++; - - for (e = current; *e; e++) { - if (escaped) - escaped = false; - else if (*e == '\\') - escaped = true; - else if (*e == '\"') - break; - } - - *l = e-current; - *state = *e == 0 ? e : e+1; - } else { - for (e = current; *e; e++) { - if (escaped) - escaped = false; - else if (*e == '\\') - escaped = true; - else if (strchr(WHITESPACE, *e)) - break; - } - *l = e-current; - *state = e; - } - - return (char*) current; -} - -int get_parent_of_pid(pid_t pid, pid_t *_ppid) { - int r; - _cleanup_fclose_ FILE *f = NULL; - char fn[PATH_MAX], line[LINE_MAX], *p; - long unsigned ppid; - - assert(pid > 0); - assert(_ppid); - - assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%lu/stat", (unsigned long) pid) < (int) (sizeof(fn)-1)); - char_array_0(fn); - - f = fopen(fn, "re"); - if (!f) - return -errno; - - if (!fgets(line, sizeof(line), f)) { - r = feof(f) ? -EIO : -errno; - fclose(f); - return r; - } - - /* Let's skip the pid and comm fields. The latter is enclosed - * in () but does not escape any () in its value, so let's - * skip over it manually */ - - p = strrchr(line, ')'); - if (!p) - return -EIO; - - p++; - - if (sscanf(p, " " - "%*c " /* state */ - "%lu ", /* ppid */ - &ppid) != 1) - return -EIO; - - if ((long unsigned) (pid_t) ppid != ppid) - return -ERANGE; - - *_ppid = (pid_t) ppid; - - return 0; -} - -int get_starttime_of_pid(pid_t pid, unsigned long long *st) { - _cleanup_fclose_ FILE *f = NULL; - char fn[PATH_MAX], line[LINE_MAX], *p; - - assert(pid > 0); - assert(st); - - assert_se(snprintf(fn, sizeof(fn)-1, "/proc/%lu/stat", (unsigned long) pid) < (int) (sizeof(fn)-1)); - char_array_0(fn); - - f = fopen(fn, "re"); - if (!f) - return -errno; - - if (!fgets(line, sizeof(line), f)) { - if (ferror(f)) - return -errno; - - return -EIO; - } - - /* Let's skip the pid and comm fields. The latter is enclosed - * in () but does not escape any () in its value, so let's - * skip over it manually */ - - p = strrchr(line, ')'); - if (!p) - return -EIO; - - p++; - - if (sscanf(p, " " - "%*c " /* state */ - "%*d " /* ppid */ - "%*d " /* pgrp */ - "%*d " /* session */ - "%*d " /* tty_nr */ - "%*d " /* tpgid */ - "%*u " /* flags */ - "%*u " /* minflt */ - "%*u " /* cminflt */ - "%*u " /* majflt */ - "%*u " /* cmajflt */ - "%*u " /* utime */ - "%*u " /* stime */ - "%*d " /* cutime */ - "%*d " /* cstime */ - "%*d " /* priority */ - "%*d " /* nice */ - "%*d " /* num_threads */ - "%*d " /* itrealvalue */ - "%llu " /* starttime */, - st) != 1) - return -EIO; - - return 0; -} - -int write_one_line_file(const char *fn, const char *line) { - _cleanup_fclose_ FILE *f = NULL; - - assert(fn); - assert(line); - - f = fopen(fn, "we"); - if (!f) - return -errno; - - errno = 0; - if (fputs(line, f) < 0) - return errno ? -errno : -EIO; - - if (!endswith(line, "\n")) - fputc('\n', f); - - fflush(f); - - if (ferror(f)) - return errno ? -errno : -EIO; - - return 0; -} - -int fchmod_umask(int fd, mode_t m) { - mode_t u; - int r; - - u = umask(0777); - r = fchmod(fd, m & (~u)) < 0 ? -errno : 0; - umask(u); - - return r; -} - -int write_one_line_file_atomic(const char *fn, const char *line) { - FILE *f; - int r; - char *p; - - assert(fn); - assert(line); - - r = fopen_temporary(fn, &f, &p); - if (r < 0) - return r; - - fchmod_umask(fileno(f), 0644); - - errno = 0; - if (fputs(line, f) < 0) { - r = -errno; - goto finish; - } - - if (!endswith(line, "\n")) - fputc('\n', f); - - fflush(f); - - if (ferror(f)) { - if (errno != 0) - r = -errno; - else - r = -EIO; - } else { - if (rename(p, fn) < 0) - r = -errno; - else - r = 0; - } - -finish: - if (r < 0) - unlink(p); - - fclose(f); - free(p); - - return r; -} - -int read_one_line_file(const char *fn, char **line) { - _cleanup_fclose_ FILE *f = NULL; - char t[LINE_MAX], *c; - - assert(fn); - assert(line); - - f = fopen(fn, "re"); - if (!f) - return -errno; - - if (!fgets(t, sizeof(t), f)) { - - if (ferror(f)) - return errno ? -errno : -EIO; - - t[0] = 0; - } - - c = strdup(t); - if (!c) - return -ENOMEM; - truncate_nl(c); - - *line = c; - return 0; -} - -int read_full_file(const char *fn, char **contents, size_t *size) { - _cleanup_fclose_ FILE *f = NULL; - size_t n, l; - _cleanup_free_ char *buf = NULL; - struct stat st; - - f = fopen(fn, "re"); - if (!f) - return -errno; - - if (fstat(fileno(f), &st) < 0) - return -errno; - - /* Safety check */ - if (st.st_size > 4*1024*1024) - return -E2BIG; - - n = st.st_size > 0 ? st.st_size : LINE_MAX; - l = 0; - - for (;;) { - char *t; - size_t k; - - t = realloc(buf, n+1); - if (!t) - return -ENOMEM; - - buf = t; - k = fread(buf + l, 1, n - l, f); - - if (k <= 0) { - if (ferror(f)) - return -errno; - - break; - } - - l += k; - n *= 2; - - /* Safety check */ - if (n > 4*1024*1024) - return -E2BIG; - } - - buf[l] = 0; - *contents = buf; - buf = NULL; - - if (size) - *size = l; - - return 0; -} - -int parse_env_file( - const char *fname, - const char *separator, ...) { - - int r = 0; - char *contents = NULL, *p; - - assert(fname); - assert(separator); - - if ((r = read_full_file(fname, &contents, NULL)) < 0) - return r; - - p = contents; - for (;;) { - const char *key = NULL; - - p += strspn(p, separator); - p += strspn(p, WHITESPACE); - - if (!*p) - break; - - if (!strchr(COMMENTS, *p)) { - va_list ap; - char **value; - - va_start(ap, separator); - while ((key = va_arg(ap, char *))) { - size_t n; - char *v; - - value = va_arg(ap, char **); - - n = strlen(key); - if (strncmp(p, key, n) != 0 || - p[n] != '=') - continue; - - p += n + 1; - n = strcspn(p, separator); - - if (n >= 2 && - strchr(QUOTES, p[0]) && - p[n-1] == p[0]) - v = strndup(p+1, n-2); - else - v = strndup(p, n); - - if (!v) { - r = -ENOMEM; - va_end(ap); - goto fail; - } - - if (v[0] == '\0') { - /* return empty value strings as NULL */ - free(v); - v = NULL; - } - - free(*value); - *value = v; - - p += n; - - r ++; - break; - } - va_end(ap); - } - - if (!key) - p += strcspn(p, separator); - } - -fail: - free(contents); - return r; -} - -int load_env_file( - const char *fname, - char ***rl) { - - FILE *f; - char **m = NULL; - int r; - - assert(fname); - assert(rl); - - if (!(f = fopen(fname, "re"))) - return -errno; - - while (!feof(f)) { - char l[LINE_MAX], *p, *u; - char **t; - - if (!fgets(l, sizeof(l), f)) { - if (feof(f)) - break; - - r = -errno; - goto finish; - } - - p = strstrip(l); - - if (!*p) - continue; - - if (strchr(COMMENTS, *p)) - continue; - - if (!(u = normalize_env_assignment(p))) { - r = log_oom(); - goto finish; - } - - t = strv_append(m, u); - free(u); - - if (!t) { - r = log_oom(); - goto finish; - } - - strv_free(m); - m = t; - } - - r = 0; - - *rl = m; - m = NULL; - -finish: - if (f) - fclose(f); - - strv_free(m); - - return r; -} - -int write_env_file(const char *fname, char **l) { - char **i, *p; - FILE *f; - int r; - - r = fopen_temporary(fname, &f, &p); - if (r < 0) - return r; - - fchmod_umask(fileno(f), 0644); - - errno = 0; - STRV_FOREACH(i, l) { - fputs(*i, f); - fputc('\n', f); - } - - fflush(f); - - if (ferror(f)) { - if (errno != 0) - r = -errno; - else - r = -EIO; - } else { - if (rename(p, fname) < 0) - r = -errno; - else - r = 0; - } - - if (r < 0) - unlink(p); - - fclose(f); - free(p); - - return r; -} - -char *truncate_nl(char *s) { - assert(s); - - s[strcspn(s, NEWLINE)] = 0; - return s; -} - -int get_process_comm(pid_t pid, char **name) { - int r; - - assert(name); - - if (pid == 0) - r = read_one_line_file("/proc/self/comm", name); - else { - char *p; - if (asprintf(&p, "/proc/%lu/comm", (unsigned long) pid) < 0) - return -ENOMEM; - - r = read_one_line_file(p, name); - free(p); - } - - return r; -} - -int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line) { - char *r, *k; - int c; - bool space = false; - size_t left; - FILE *f; - - assert(max_length > 0); - assert(line); - - if (pid == 0) - f = fopen("/proc/self/cmdline", "re"); - else { - char *p; - if (asprintf(&p, "/proc/%lu/cmdline", (unsigned long) pid) < 0) - return -ENOMEM; - - f = fopen(p, "re"); - free(p); - } - - if (!f) - return -errno; - - r = new(char, max_length); - if (!r) { - fclose(f); - return -ENOMEM; - } - - k = r; - left = max_length; - while ((c = getc(f)) != EOF) { - - if (isprint(c)) { - if (space) { - if (left <= 4) - break; - - *(k++) = ' '; - left--; - space = false; - } - - if (left <= 4) - break; - - *(k++) = (char) c; - left--; - } else - space = true; - } - - if (left <= 4) { - size_t n = MIN(left-1, 3U); - memcpy(k, "...", n); - k[n] = 0; - } else - *k = 0; - - fclose(f); - - /* Kernel threads have no argv[] */ - if (r[0] == 0) { - char *t; - int h; - - free(r); - - if (!comm_fallback) - return -ENOENT; - - h = get_process_comm(pid, &t); - if (h < 0) - return h; - - r = strjoin("[", t, "]", NULL); - free(t); - - if (!r) - return -ENOMEM; - } - - *line = r; - return 0; -} - -int is_kernel_thread(pid_t pid) { - char *p; - size_t count; - char c; - bool eof; - FILE *f; - - if (pid == 0) - return 0; - - if (asprintf(&p, "/proc/%lu/cmdline", (unsigned long) pid) < 0) - return -ENOMEM; - - f = fopen(p, "re"); - free(p); - - if (!f) - return -errno; - - count = fread(&c, 1, 1, f); - eof = feof(f); - fclose(f); - - /* Kernel threads have an empty cmdline */ - - if (count <= 0) - return eof ? 1 : -errno; - - return 0; -} - -int get_process_exe(pid_t pid, char **name) { - int r; - - assert(name); - - if (pid == 0) - r = readlink_malloc("/proc/self/exe", name); - else { - char *p; - if (asprintf(&p, "/proc/%lu/exe", (unsigned long) pid) < 0) - return -ENOMEM; - - r = readlink_malloc(p, name); - free(p); - } - - return r; -} - -static int get_process_id(pid_t pid, const char *field, uid_t *uid) { - char *p; - FILE *f; - int r; - - assert(uid); - - if (pid == 0) - return getuid(); - - if (asprintf(&p, "/proc/%lu/status", (unsigned long) pid) < 0) - return -ENOMEM; - - f = fopen(p, "re"); - free(p); - - if (!f) - return -errno; - - while (!feof(f)) { - char line[LINE_MAX], *l; - - if (!fgets(line, sizeof(line), f)) { - if (feof(f)) - break; - - r = -errno; - goto finish; - } - - l = strstrip(line); - - if (startswith(l, field)) { - l += strlen(field); - l += strspn(l, WHITESPACE); - - l[strcspn(l, WHITESPACE)] = 0; - - r = parse_uid(l, uid); - goto finish; - } - } - - r = -EIO; - -finish: - fclose(f); - - return r; -} - -int get_process_uid(pid_t pid, uid_t *uid) { - return get_process_id(pid, "Uid:", uid); -} - -int get_process_gid(pid_t pid, gid_t *gid) { - return get_process_id(pid, "Gid:", gid); -} - -char *strnappend(const char *s, const char *suffix, size_t b) { - size_t a; - char *r; - - if (!s && !suffix) - return strdup(""); - - if (!s) - return strndup(suffix, b); - - if (!suffix) - return strdup(s); - - assert(s); - assert(suffix); - - a = strlen(s); - if (b > ((size_t) -1) - a) - return NULL; - - r = new(char, a+b+1); - if (!r) - return NULL; - - memcpy(r, s, a); - memcpy(r+a, suffix, b); - r[a+b] = 0; - - return r; -} - -char *strappend(const char *s, const char *suffix) { - return strnappend(s, suffix, suffix ? strlen(suffix) : 0); -} - -int readlink_malloc(const char *p, char **r) { - size_t l = 100; - - assert(p); - assert(r); - - for (;;) { - char *c; - ssize_t n; - - if (!(c = new(char, l))) - return -ENOMEM; - - if ((n = readlink(p, c, l-1)) < 0) { - int ret = -errno; - free(c); - return ret; - } - - if ((size_t) n < l-1) { - c[n] = 0; - *r = c; - return 0; - } - - free(c); - l *= 2; - } -} - -int readlink_and_make_absolute(const char *p, char **r) { - char *target, *k; - int j; - - assert(p); - assert(r); - - if ((j = readlink_malloc(p, &target)) < 0) - return j; - - k = file_in_same_dir(p, target); - free(target); - - if (!k) - return -ENOMEM; - - *r = k; - return 0; -} - -int readlink_and_canonicalize(const char *p, char **r) { - char *t, *s; - int j; - - assert(p); - assert(r); - - j = readlink_and_make_absolute(p, &t); - if (j < 0) - return j; - - s = canonicalize_file_name(t); - if (s) { - free(t); - *r = s; - } else - *r = t; - - path_kill_slashes(*r); - - return 0; -} - -int reset_all_signal_handlers(void) { - int sig; - - for (sig = 1; sig < _NSIG; sig++) { - struct sigaction sa; - - if (sig == SIGKILL || sig == SIGSTOP) - continue; - - zero(sa); - sa.sa_handler = SIG_DFL; - sa.sa_flags = SA_RESTART; - - /* On Linux the first two RT signals are reserved by - * glibc, and sigaction() will return EINVAL for them. */ - if ((sigaction(sig, &sa, NULL) < 0)) - if (errno != EINVAL) - return -errno; - } - - return 0; -} - -char *strstrip(char *s) { - char *e; - - /* Drops trailing whitespace. Modifies the string in - * place. Returns pointer to first non-space character */ - - s += strspn(s, WHITESPACE); - - for (e = strchr(s, 0); e > s; e --) - if (!strchr(WHITESPACE, e[-1])) - break; - - *e = 0; - - return s; -} - -char *delete_chars(char *s, const char *bad) { - char *f, *t; - - /* Drops all whitespace, regardless where in the string */ - - for (f = s, t = s; *f; f++) { - if (strchr(bad, *f)) - continue; - - *(t++) = *f; - } - - *t = 0; - - return s; -} - -bool in_charset(const char *s, const char* charset) { - const char *i; - - assert(s); - assert(charset); - - for (i = s; *i; i++) - if (!strchr(charset, *i)) - return false; - - return true; -} - -char *file_in_same_dir(const char *path, const char *filename) { - char *e, *r; - size_t k; - - assert(path); - assert(filename); - - /* This removes the last component of path and appends - * filename, unless the latter is absolute anyway or the - * former isn't */ - - if (path_is_absolute(filename)) - return strdup(filename); - - if (!(e = strrchr(path, '/'))) - return strdup(filename); - - k = strlen(filename); - if (!(r = new(char, e-path+1+k+1))) - return NULL; - - memcpy(r, path, e-path+1); - memcpy(r+(e-path)+1, filename, k+1); - - return r; -} - -int rmdir_parents(const char *path, const char *stop) { - size_t l; - int r = 0; - - assert(path); - assert(stop); - - l = strlen(path); - - /* Skip trailing slashes */ - while (l > 0 && path[l-1] == '/') - l--; - - while (l > 0) { - char *t; - - /* Skip last component */ - while (l > 0 && path[l-1] != '/') - l--; - - /* Skip trailing slashes */ - while (l > 0 && path[l-1] == '/') - l--; - - if (l <= 0) - break; - - if (!(t = strndup(path, l))) - return -ENOMEM; - - if (path_startswith(stop, t)) { - free(t); - return 0; - } - - r = rmdir(t); - free(t); - - if (r < 0) - if (errno != ENOENT) - return -errno; - } - - return 0; -} - - -char hexchar(int x) { - static const char table[16] = "0123456789abcdef"; - - return table[x & 15]; -} - -int unhexchar(char c) { - - if (c >= '0' && c <= '9') - return c - '0'; - - if (c >= 'a' && c <= 'f') - return c - 'a' + 10; - - if (c >= 'A' && c <= 'F') - return c - 'A' + 10; - - return -1; -} - -char octchar(int x) { - return '0' + (x & 7); -} - -int unoctchar(char c) { - - if (c >= '0' && c <= '7') - return c - '0'; - - return -1; -} - -char decchar(int x) { - return '0' + (x % 10); -} - -int undecchar(char c) { - - if (c >= '0' && c <= '9') - return c - '0'; - - return -1; -} - -char *cescape(const char *s) { - char *r, *t; - const char *f; - - assert(s); - - /* Does C style string escaping. */ - - r = new(char, strlen(s)*4 + 1); - if (!r) - return NULL; - - for (f = s, t = r; *f; f++) - - switch (*f) { - - case '\a': - *(t++) = '\\'; - *(t++) = 'a'; - break; - case '\b': - *(t++) = '\\'; - *(t++) = 'b'; - break; - case '\f': - *(t++) = '\\'; - *(t++) = 'f'; - break; - case '\n': - *(t++) = '\\'; - *(t++) = 'n'; - break; - case '\r': - *(t++) = '\\'; - *(t++) = 'r'; - break; - case '\t': - *(t++) = '\\'; - *(t++) = 't'; - break; - case '\v': - *(t++) = '\\'; - *(t++) = 'v'; - break; - case '\\': - *(t++) = '\\'; - *(t++) = '\\'; - break; - case '"': - *(t++) = '\\'; - *(t++) = '"'; - break; - case '\'': - *(t++) = '\\'; - *(t++) = '\''; - break; - - default: - /* For special chars we prefer octal over - * hexadecimal encoding, simply because glib's - * g_strescape() does the same */ - if ((*f < ' ') || (*f >= 127)) { - *(t++) = '\\'; - *(t++) = octchar((unsigned char) *f >> 6); - *(t++) = octchar((unsigned char) *f >> 3); - *(t++) = octchar((unsigned char) *f); - } else - *(t++) = *f; - break; - } - - *t = 0; - - return r; -} - -char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix) { - char *r, *t; - const char *f; - size_t pl; - - assert(s); - - /* Undoes C style string escaping, and optionally prefixes it. */ - - pl = prefix ? strlen(prefix) : 0; - - r = new(char, pl+length+1); - if (!r) - return r; - - if (prefix) - memcpy(r, prefix, pl); - - for (f = s, t = r + pl; f < s + length; f++) { - - if (*f != '\\') { - *(t++) = *f; - continue; - } - - f++; - - switch (*f) { - - case 'a': - *(t++) = '\a'; - break; - case 'b': - *(t++) = '\b'; - break; - case 'f': - *(t++) = '\f'; - break; - case 'n': - *(t++) = '\n'; - break; - case 'r': - *(t++) = '\r'; - break; - case 't': - *(t++) = '\t'; - break; - case 'v': - *(t++) = '\v'; - break; - case '\\': - *(t++) = '\\'; - break; - case '"': - *(t++) = '"'; - break; - case '\'': - *(t++) = '\''; - break; - - case 's': - /* This is an extension of the XDG syntax files */ - *(t++) = ' '; - break; - - case 'x': { - /* hexadecimal encoding */ - int a, b; - - a = unhexchar(f[1]); - b = unhexchar(f[2]); - - if (a < 0 || b < 0) { - /* Invalid escape code, let's take it literal then */ - *(t++) = '\\'; - *(t++) = 'x'; - } else { - *(t++) = (char) ((a << 4) | b); - f += 2; - } - - break; - } - - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': { - /* octal encoding */ - int a, b, c; - - a = unoctchar(f[0]); - b = unoctchar(f[1]); - c = unoctchar(f[2]); - - if (a < 0 || b < 0 || c < 0) { - /* Invalid escape code, let's take it literal then */ - *(t++) = '\\'; - *(t++) = f[0]; - } else { - *(t++) = (char) ((a << 6) | (b << 3) | c); - f += 2; - } - - break; - } - - case 0: - /* premature end of string.*/ - *(t++) = '\\'; - goto finish; - - default: - /* Invalid escape code, let's take it literal then */ - *(t++) = '\\'; - *(t++) = *f; - break; - } - } - -finish: - *t = 0; - return r; -} - -char *cunescape_length(const char *s, size_t length) { - return cunescape_length_with_prefix(s, length, NULL); -} - -char *cunescape(const char *s) { - assert(s); - - return cunescape_length(s, strlen(s)); -} - -char *xescape(const char *s, const char *bad) { - char *r, *t; - const char *f; - - /* Escapes all chars in bad, in addition to \ and all special - * chars, in \xFF style escaping. May be reversed with - * cunescape. */ - - r = new(char, strlen(s) * 4 + 1); - if (!r) - return NULL; - - for (f = s, t = r; *f; f++) { - - if ((*f < ' ') || (*f >= 127) || - (*f == '\\') || strchr(bad, *f)) { - *(t++) = '\\'; - *(t++) = 'x'; - *(t++) = hexchar(*f >> 4); - *(t++) = hexchar(*f); - } else - *(t++) = *f; - } - - *t = 0; - - return r; -} - -char *bus_path_escape(const char *s) { - char *r, *t; - const char *f; - - assert(s); - - /* Escapes all chars that D-Bus' object path cannot deal - * with. Can be reverse with bus_path_unescape() */ - - if (!(r = new(char, strlen(s)*3+1))) - return NULL; - - for (f = s, t = r; *f; f++) { - - if (!(*f >= 'A' && *f <= 'Z') && - !(*f >= 'a' && *f <= 'z') && - !(*f >= '0' && *f <= '9')) { - *(t++) = '_'; - *(t++) = hexchar(*f >> 4); - *(t++) = hexchar(*f); - } else - *(t++) = *f; - } - - *t = 0; - - return r; -} - -char *bus_path_unescape(const char *f) { - char *r, *t; - - assert(f); - - if (!(r = strdup(f))) - return NULL; - - for (t = r; *f; f++) { - - if (*f == '_') { - int a, b; - - if ((a = unhexchar(f[1])) < 0 || - (b = unhexchar(f[2])) < 0) { - /* Invalid escape code, let's take it literal then */ - *(t++) = '_'; - } else { - *(t++) = (char) ((a << 4) | b); - f += 2; - } - } else - *(t++) = *f; - } - - *t = 0; - - return r; -} - -char *ascii_strlower(char *t) { - char *p; - - assert(t); - - for (p = t; *p; p++) - if (*p >= 'A' && *p <= 'Z') - *p = *p - 'A' + 'a'; - - return t; -} - -static bool ignore_file_allow_backup(const char *filename) { - assert(filename); - - return - filename[0] == '.' || - streq(filename, "lost+found") || - streq(filename, "aquota.user") || - streq(filename, "aquota.group") || - endswith(filename, ".rpmnew") || - endswith(filename, ".rpmsave") || - endswith(filename, ".rpmorig") || - endswith(filename, ".dpkg-old") || - endswith(filename, ".dpkg-new") || - endswith(filename, ".swp"); -} - -bool ignore_file(const char *filename) { - assert(filename); - - if (endswith(filename, "~")) - return false; - - return ignore_file_allow_backup(filename); -} - -int fd_nonblock(int fd, bool nonblock) { - int flags; - - assert(fd >= 0); - - if ((flags = fcntl(fd, F_GETFL, 0)) < 0) - return -errno; - - if (nonblock) - flags |= O_NONBLOCK; - else - flags &= ~O_NONBLOCK; - - if (fcntl(fd, F_SETFL, flags) < 0) - return -errno; - - return 0; -} - -int fd_cloexec(int fd, bool cloexec) { - int flags; - - assert(fd >= 0); - - if ((flags = fcntl(fd, F_GETFD, 0)) < 0) - return -errno; - - if (cloexec) - flags |= FD_CLOEXEC; - else - flags &= ~FD_CLOEXEC; - - if (fcntl(fd, F_SETFD, flags) < 0) - return -errno; - - return 0; -} - -static bool fd_in_set(int fd, const int fdset[], unsigned n_fdset) { - unsigned i; - - assert(n_fdset == 0 || fdset); - - for (i = 0; i < n_fdset; i++) - if (fdset[i] == fd) - return true; - - return false; -} - -int close_all_fds(const int except[], unsigned n_except) { - DIR *d; - struct dirent *de; - int r = 0; - - assert(n_except == 0 || except); - - d = opendir("/proc/self/fd"); - if (!d) { - int fd; - struct rlimit rl; - - /* When /proc isn't available (for example in chroots) - * the fallback is brute forcing through the fd - * table */ - - assert_se(getrlimit(RLIMIT_NOFILE, &rl) >= 0); - for (fd = 3; fd < (int) rl.rlim_max; fd ++) { - - if (fd_in_set(fd, except, n_except)) - continue; - - if (close_nointr(fd) < 0) - if (errno != EBADF && r == 0) - r = -errno; - } - - return r; - } - - while ((de = readdir(d))) { - int fd = -1; - - if (ignore_file(de->d_name)) - continue; - - if (safe_atoi(de->d_name, &fd) < 0) - /* Let's better ignore this, just in case */ - continue; - - if (fd < 3) - continue; - - if (fd == dirfd(d)) - continue; - - if (fd_in_set(fd, except, n_except)) - continue; - - if (close_nointr(fd) < 0) { - /* Valgrind has its own FD and doesn't want to have it closed */ - if (errno != EBADF && r == 0) - r = -errno; - } - } - - closedir(d); - return r; -} - -bool chars_intersect(const char *a, const char *b) { - const char *p; - - /* Returns true if any of the chars in a are in b. */ - for (p = a; *p; p++) - if (strchr(b, *p)) - return true; - - return false; -} - -char *format_timestamp(char *buf, size_t l, usec_t t) { - struct tm tm; - time_t sec; - - assert(buf); - assert(l > 0); - - if (t <= 0) - return NULL; - - sec = (time_t) (t / USEC_PER_SEC); - - if (strftime(buf, l, "%a, %Y-%m-%d %H:%M:%S %Z", localtime_r(&sec, &tm)) <= 0) - return NULL; - - return buf; -} - -char *format_timestamp_pretty(char *buf, size_t l, usec_t t) { - usec_t n, d; - - n = now(CLOCK_REALTIME); - - if (t <= 0 || t > n || t + USEC_PER_DAY*7 <= t) - return NULL; - - d = n - t; - - if (d >= USEC_PER_YEAR) - snprintf(buf, l, "%llu years and %llu months ago", - (unsigned long long) (d / USEC_PER_YEAR), - (unsigned long long) ((d % USEC_PER_YEAR) / USEC_PER_MONTH)); - else if (d >= USEC_PER_MONTH) - snprintf(buf, l, "%llu months and %llu days ago", - (unsigned long long) (d / USEC_PER_MONTH), - (unsigned long long) ((d % USEC_PER_MONTH) / USEC_PER_DAY)); - else if (d >= USEC_PER_WEEK) - snprintf(buf, l, "%llu weeks and %llu days ago", - (unsigned long long) (d / USEC_PER_WEEK), - (unsigned long long) ((d % USEC_PER_WEEK) / USEC_PER_DAY)); - else if (d >= 2*USEC_PER_DAY) - snprintf(buf, l, "%llu days ago", (unsigned long long) (d / USEC_PER_DAY)); - else if (d >= 25*USEC_PER_HOUR) - snprintf(buf, l, "1 day and %lluh ago", - (unsigned long long) ((d - USEC_PER_DAY) / USEC_PER_HOUR)); - else if (d >= 6*USEC_PER_HOUR) - snprintf(buf, l, "%lluh ago", - (unsigned long long) (d / USEC_PER_HOUR)); - else if (d >= USEC_PER_HOUR) - snprintf(buf, l, "%lluh %llumin ago", - (unsigned long long) (d / USEC_PER_HOUR), - (unsigned long long) ((d % USEC_PER_HOUR) / USEC_PER_MINUTE)); - else if (d >= 5*USEC_PER_MINUTE) - snprintf(buf, l, "%llumin ago", - (unsigned long long) (d / USEC_PER_MINUTE)); - else if (d >= USEC_PER_MINUTE) - snprintf(buf, l, "%llumin %llus ago", - (unsigned long long) (d / USEC_PER_MINUTE), - (unsigned long long) ((d % USEC_PER_MINUTE) / USEC_PER_SEC)); - else if (d >= USEC_PER_SEC) - snprintf(buf, l, "%llus ago", - (unsigned long long) (d / USEC_PER_SEC)); - else if (d >= USEC_PER_MSEC) - snprintf(buf, l, "%llums ago", - (unsigned long long) (d / USEC_PER_MSEC)); - else if (d > 0) - snprintf(buf, l, "%lluus ago", - (unsigned long long) d); - else - snprintf(buf, l, "now"); - - buf[l-1] = 0; - return buf; -} - -char *format_timespan(char *buf, size_t l, usec_t t) { - static const struct { - const char *suffix; - usec_t usec; - } table[] = { - { "w", USEC_PER_WEEK }, - { "d", USEC_PER_DAY }, - { "h", USEC_PER_HOUR }, - { "min", USEC_PER_MINUTE }, - { "s", USEC_PER_SEC }, - { "ms", USEC_PER_MSEC }, - { "us", 1 }, - }; - - unsigned i; - char *p = buf; - - assert(buf); - assert(l > 0); - - if (t == (usec_t) -1) - return NULL; - - if (t == 0) { - snprintf(p, l, "0"); - p[l-1] = 0; - return p; - } - - /* The result of this function can be parsed with parse_usec */ - - for (i = 0; i < ELEMENTSOF(table); i++) { - int k; - size_t n; - - if (t < table[i].usec) - continue; - - if (l <= 1) - break; - - k = snprintf(p, l, "%s%llu%s", p > buf ? " " : "", (unsigned long long) (t / table[i].usec), table[i].suffix); - n = MIN((size_t) k, l); - - l -= n; - p += n; - - t %= table[i].usec; - } - - *p = 0; - - return buf; -} - -bool fstype_is_network(const char *fstype) { - static const char table[] = - "cifs\0" - "smbfs\0" - "ncpfs\0" - "nfs\0" - "nfs4\0" - "gfs\0" - "gfs2\0"; - - return nulstr_contains(table, fstype); -} - -int chvt(int vt) { - _cleanup_close_ int fd; - - fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return -errno; - - if (vt < 0) { - int tiocl[2] = { - TIOCL_GETKMSGREDIRECT, - 0 - }; - - if (ioctl(fd, TIOCLINUX, tiocl) < 0) - return -errno; - - vt = tiocl[0] <= 0 ? 1 : tiocl[0]; - } - - if (ioctl(fd, VT_ACTIVATE, vt) < 0) - return -errno; - - return 0; -} - -int read_one_char(FILE *f, char *ret, usec_t t, bool *need_nl) { - struct termios old_termios, new_termios; - char c; - char line[LINE_MAX]; - - assert(f); - assert(ret); - - if (tcgetattr(fileno(f), &old_termios) >= 0) { - new_termios = old_termios; - - new_termios.c_lflag &= ~ICANON; - new_termios.c_cc[VMIN] = 1; - new_termios.c_cc[VTIME] = 0; - - if (tcsetattr(fileno(f), TCSADRAIN, &new_termios) >= 0) { - size_t k; - - if (t != (usec_t) -1) { - if (fd_wait_for_event(fileno(f), POLLIN, t) <= 0) { - tcsetattr(fileno(f), TCSADRAIN, &old_termios); - return -ETIMEDOUT; - } - } - - k = fread(&c, 1, 1, f); - - tcsetattr(fileno(f), TCSADRAIN, &old_termios); - - if (k <= 0) - return -EIO; - - if (need_nl) - *need_nl = c != '\n'; - - *ret = c; - return 0; - } - } - - if (t != (usec_t) -1) - if (fd_wait_for_event(fileno(f), POLLIN, t) <= 0) - return -ETIMEDOUT; - - if (!fgets(line, sizeof(line), f)) - return -EIO; - - truncate_nl(line); - - if (strlen(line) != 1) - return -EBADMSG; - - if (need_nl) - *need_nl = false; - - *ret = line[0]; - return 0; -} - -int ask(char *ret, const char *replies, const char *text, ...) { - - assert(ret); - assert(replies); - assert(text); - - for (;;) { - va_list ap; - char c; - int r; - bool need_nl = true; - - if (on_tty()) - fputs(ANSI_HIGHLIGHT_ON, stdout); - - va_start(ap, text); - vprintf(text, ap); - va_end(ap); - - if (on_tty()) - fputs(ANSI_HIGHLIGHT_OFF, stdout); - - fflush(stdout); - - r = read_one_char(stdin, &c, (usec_t) -1, &need_nl); - if (r < 0) { - - if (r == -EBADMSG) { - puts("Bad input, please try again."); - continue; - } - - putchar('\n'); - return r; - } - - if (need_nl) - putchar('\n'); - - if (strchr(replies, c)) { - *ret = c; - return 0; - } - - puts("Read unexpected character, please try again."); - } -} - -int reset_terminal_fd(int fd, bool switch_to_text) { - struct termios termios; - int r = 0; - - /* Set terminal to some sane defaults */ - - assert(fd >= 0); - - /* We leave locked terminal attributes untouched, so that - * Plymouth may set whatever it wants to set, and we don't - * interfere with that. */ - - /* Disable exclusive mode, just in case */ - ioctl(fd, TIOCNXCL); - - /* Switch to text mode */ - if (switch_to_text) - ioctl(fd, KDSETMODE, KD_TEXT); - - /* Enable console unicode mode */ - ioctl(fd, KDSKBMODE, K_UNICODE); - - if (tcgetattr(fd, &termios) < 0) { - r = -errno; - goto finish; - } - - /* We only reset the stuff that matters to the software. How - * hardware is set up we don't touch assuming that somebody - * else will do that for us */ - - termios.c_iflag &= ~(IGNBRK | BRKINT | ISTRIP | INLCR | IGNCR | IUCLC); - termios.c_iflag |= ICRNL | IMAXBEL | IUTF8; - termios.c_oflag |= ONLCR; - termios.c_cflag |= CREAD; - termios.c_lflag = ISIG | ICANON | IEXTEN | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOPRT | ECHOKE; - - termios.c_cc[VINTR] = 03; /* ^C */ - termios.c_cc[VQUIT] = 034; /* ^\ */ - termios.c_cc[VERASE] = 0177; - termios.c_cc[VKILL] = 025; /* ^X */ - termios.c_cc[VEOF] = 04; /* ^D */ - termios.c_cc[VSTART] = 021; /* ^Q */ - termios.c_cc[VSTOP] = 023; /* ^S */ - termios.c_cc[VSUSP] = 032; /* ^Z */ - termios.c_cc[VLNEXT] = 026; /* ^V */ - termios.c_cc[VWERASE] = 027; /* ^W */ - termios.c_cc[VREPRINT] = 022; /* ^R */ - termios.c_cc[VEOL] = 0; - termios.c_cc[VEOL2] = 0; - - termios.c_cc[VTIME] = 0; - termios.c_cc[VMIN] = 1; - - if (tcsetattr(fd, TCSANOW, &termios) < 0) - r = -errno; - -finish: - /* Just in case, flush all crap out */ - tcflush(fd, TCIOFLUSH); - - return r; -} - -int reset_terminal(const char *name) { - int fd, r; - - fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return fd; - - r = reset_terminal_fd(fd, true); - close_nointr_nofail(fd); - - return r; -} - -int open_terminal(const char *name, int mode) { - int fd, r; - unsigned c = 0; - - /* - * If a TTY is in the process of being closed opening it might - * cause EIO. This is horribly awful, but unlikely to be - * changed in the kernel. Hence we work around this problem by - * retrying a couple of times. - * - * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/554172/comments/245 - */ - - for (;;) { - fd = open(name, mode); - if (fd >= 0) - break; - - if (errno != EIO) - return -errno; - - /* Max 1s in total */ - if (c >= 20) - return -errno; - - usleep(50 * USEC_PER_MSEC); - c++; - } - - if (fd < 0) - return -errno; - - r = isatty(fd); - if (r < 0) { - close_nointr_nofail(fd); - return -errno; - } - - if (!r) { - close_nointr_nofail(fd); - return -ENOTTY; - } - - return fd; -} - -int flush_fd(int fd) { - struct pollfd pollfd; - - zero(pollfd); - pollfd.fd = fd; - pollfd.events = POLLIN; - - for (;;) { - char buf[LINE_MAX]; - ssize_t l; - int r; - - if ((r = poll(&pollfd, 1, 0)) < 0) { - - if (errno == EINTR) - continue; - - return -errno; - } - - if (r == 0) - return 0; - - if ((l = read(fd, buf, sizeof(buf))) < 0) { - - if (errno == EINTR) - continue; - - if (errno == EAGAIN) - return 0; - - return -errno; - } - - if (l <= 0) - return 0; - } -} - -int acquire_terminal( - const char *name, - bool fail, - bool force, - bool ignore_tiocstty_eperm, - usec_t timeout) { - - int fd = -1, notify = -1, r = 0, wd = -1; - usec_t ts = 0; - struct sigaction sa_old, sa_new; - - assert(name); - - /* We use inotify to be notified when the tty is closed. We - * create the watch before checking if we can actually acquire - * it, so that we don't lose any event. - * - * Note: strictly speaking this actually watches for the - * device being closed, it does *not* really watch whether a - * tty loses its controlling process. However, unless some - * rogue process uses TIOCNOTTY on /dev/tty *after* closing - * its tty otherwise this will not become a problem. As long - * as the administrator makes sure not configure any service - * on the same tty as an untrusted user this should not be a - * problem. (Which he probably should not do anyway.) */ - - if (timeout != (usec_t) -1) - ts = now(CLOCK_MONOTONIC); - - if (!fail && !force) { - notify = inotify_init1(IN_CLOEXEC | (timeout != (usec_t) -1 ? IN_NONBLOCK : 0)); - if (notify < 0) { - r = -errno; - goto fail; - } - - wd = inotify_add_watch(notify, name, IN_CLOSE); - if (wd < 0) { - r = -errno; - goto fail; - } - } - - for (;;) { - if (notify >= 0) { - r = flush_fd(notify); - if (r < 0) - goto fail; - } - - /* We pass here O_NOCTTY only so that we can check the return - * value TIOCSCTTY and have a reliable way to figure out if we - * successfully became the controlling process of the tty */ - fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return fd; - - /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed - * if we already own the tty. */ - zero(sa_new); - sa_new.sa_handler = SIG_IGN; - sa_new.sa_flags = SA_RESTART; - assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0); - - /* First, try to get the tty */ - if (ioctl(fd, TIOCSCTTY, force) < 0) - r = -errno; - - assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0); - - /* Sometimes it makes sense to ignore TIOCSCTTY - * returning EPERM, i.e. when very likely we already - * are have this controlling terminal. */ - if (r < 0 && r == -EPERM && ignore_tiocstty_eperm) - r = 0; - - if (r < 0 && (force || fail || r != -EPERM)) { - goto fail; - } - - if (r >= 0) - break; - - assert(!fail); - assert(!force); - assert(notify >= 0); - - for (;;) { - uint8_t inotify_buffer[sizeof(struct inotify_event) + FILENAME_MAX]; - ssize_t l; - struct inotify_event *e; - - if (timeout != (usec_t) -1) { - usec_t n; - - n = now(CLOCK_MONOTONIC); - if (ts + timeout < n) { - r = -ETIMEDOUT; - goto fail; - } - - r = fd_wait_for_event(fd, POLLIN, ts + timeout - n); - if (r < 0) - goto fail; - - if (r == 0) { - r = -ETIMEDOUT; - goto fail; - } - } - - l = read(notify, inotify_buffer, sizeof(inotify_buffer)); - if (l < 0) { - - if (errno == EINTR || errno == EAGAIN) - continue; - - r = -errno; - goto fail; - } - - e = (struct inotify_event*) inotify_buffer; - - while (l > 0) { - size_t step; - - if (e->wd != wd || !(e->mask & IN_CLOSE)) { - r = -EIO; - goto fail; - } - - step = sizeof(struct inotify_event) + e->len; - assert(step <= (size_t) l); - - e = (struct inotify_event*) ((uint8_t*) e + step); - l -= step; - } - - break; - } - - /* We close the tty fd here since if the old session - * ended our handle will be dead. It's important that - * we do this after sleeping, so that we don't enter - * an endless loop. */ - close_nointr_nofail(fd); - } - - if (notify >= 0) - close_nointr_nofail(notify); - - r = reset_terminal_fd(fd, true); - if (r < 0) - log_warning("Failed to reset terminal: %s", strerror(-r)); - - return fd; - -fail: - if (fd >= 0) - close_nointr_nofail(fd); - - if (notify >= 0) - close_nointr_nofail(notify); - - return r; -} - -int release_terminal(void) { - int r = 0, fd; - struct sigaction sa_old, sa_new; - - if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY|O_CLOEXEC)) < 0) - return -errno; - - /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed - * by our own TIOCNOTTY */ - - zero(sa_new); - sa_new.sa_handler = SIG_IGN; - sa_new.sa_flags = SA_RESTART; - assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0); - - if (ioctl(fd, TIOCNOTTY) < 0) - r = -errno; - - assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0); - - close_nointr_nofail(fd); - return r; -} - -int sigaction_many(const struct sigaction *sa, ...) { - va_list ap; - int r = 0, sig; - - va_start(ap, sa); - while ((sig = va_arg(ap, int)) > 0) - if (sigaction(sig, sa, NULL) < 0) - r = -errno; - va_end(ap); - - return r; -} - -int ignore_signals(int sig, ...) { - struct sigaction sa; - va_list ap; - int r = 0; - - zero(sa); - sa.sa_handler = SIG_IGN; - sa.sa_flags = SA_RESTART; - - if (sigaction(sig, &sa, NULL) < 0) - r = -errno; - - va_start(ap, sig); - while ((sig = va_arg(ap, int)) > 0) - if (sigaction(sig, &sa, NULL) < 0) - r = -errno; - va_end(ap); - - return r; -} - -int default_signals(int sig, ...) { - struct sigaction sa; - va_list ap; - int r = 0; - - zero(sa); - sa.sa_handler = SIG_DFL; - sa.sa_flags = SA_RESTART; - - if (sigaction(sig, &sa, NULL) < 0) - r = -errno; - - va_start(ap, sig); - while ((sig = va_arg(ap, int)) > 0) - if (sigaction(sig, &sa, NULL) < 0) - r = -errno; - va_end(ap); - - return r; -} - -int close_pipe(int p[]) { - int a = 0, b = 0; - - assert(p); - - if (p[0] >= 0) { - a = close_nointr(p[0]); - p[0] = -1; - } - - if (p[1] >= 0) { - b = close_nointr(p[1]); - p[1] = -1; - } - - return a < 0 ? a : b; -} - -ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll) { - uint8_t *p; - ssize_t n = 0; - - assert(fd >= 0); - assert(buf); - - p = buf; - - while (nbytes > 0) { - ssize_t k; - - if ((k = read(fd, p, nbytes)) <= 0) { - - if (k < 0 && errno == EINTR) - continue; - - if (k < 0 && errno == EAGAIN && do_poll) { - struct pollfd pollfd; - - zero(pollfd); - pollfd.fd = fd; - pollfd.events = POLLIN; - - if (poll(&pollfd, 1, -1) < 0) { - if (errno == EINTR) - continue; - - return n > 0 ? n : -errno; - } - - if (pollfd.revents != POLLIN) - return n > 0 ? n : -EIO; - - continue; - } - - return n > 0 ? n : (k < 0 ? -errno : 0); - } - - p += k; - nbytes -= k; - n += k; - } - - return n; -} - -ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll) { - const uint8_t *p; - ssize_t n = 0; - - assert(fd >= 0); - assert(buf); - - p = buf; - - while (nbytes > 0) { - ssize_t k; - - k = write(fd, p, nbytes); - if (k <= 0) { - - if (k < 0 && errno == EINTR) - continue; - - if (k < 0 && errno == EAGAIN && do_poll) { - struct pollfd pollfd; - - zero(pollfd); - pollfd.fd = fd; - pollfd.events = POLLOUT; - - if (poll(&pollfd, 1, -1) < 0) { - if (errno == EINTR) - continue; - - return n > 0 ? n : -errno; - } - - if (pollfd.revents != POLLOUT) - return n > 0 ? n : -EIO; - - continue; - } - - return n > 0 ? n : (k < 0 ? -errno : 0); - } - - p += k; - nbytes -= k; - n += k; - } - - return n; -} - -int parse_usec(const char *t, usec_t *usec) { - static const struct { - const char *suffix; - usec_t usec; - } table[] = { - { "seconds", USEC_PER_SEC }, - { "second", USEC_PER_SEC }, - { "sec", USEC_PER_SEC }, - { "s", USEC_PER_SEC }, - { "minutes", USEC_PER_MINUTE }, - { "minute", USEC_PER_MINUTE }, - { "min", USEC_PER_MINUTE }, - { "months", USEC_PER_MONTH }, - { "month", USEC_PER_MONTH }, - { "msec", USEC_PER_MSEC }, - { "ms", USEC_PER_MSEC }, - { "m", USEC_PER_MINUTE }, - { "hours", USEC_PER_HOUR }, - { "hour", USEC_PER_HOUR }, - { "hr", USEC_PER_HOUR }, - { "h", USEC_PER_HOUR }, - { "days", USEC_PER_DAY }, - { "day", USEC_PER_DAY }, - { "d", USEC_PER_DAY }, - { "weeks", USEC_PER_WEEK }, - { "week", USEC_PER_WEEK }, - { "w", USEC_PER_WEEK }, - { "years", USEC_PER_YEAR }, - { "year", USEC_PER_YEAR }, - { "y", USEC_PER_YEAR }, - { "usec", 1ULL }, - { "us", 1ULL }, - { "", USEC_PER_SEC }, /* default is sec */ - }; - - const char *p; - usec_t r = 0; - - assert(t); - assert(usec); - - p = t; - do { - long long l; - char *e; - unsigned i; - - errno = 0; - l = strtoll(p, &e, 10); - - if (errno != 0) - return -errno; - - if (l < 0) - return -ERANGE; - - if (e == p) - return -EINVAL; - - e += strspn(e, WHITESPACE); - - for (i = 0; i < ELEMENTSOF(table); i++) - if (startswith(e, table[i].suffix)) { - r += (usec_t) l * table[i].usec; - p = e + strlen(table[i].suffix); - break; - } - - if (i >= ELEMENTSOF(table)) - return -EINVAL; - - } while (*p != 0); - - *usec = r; - - return 0; -} - -int parse_nsec(const char *t, nsec_t *nsec) { - static const struct { - const char *suffix; - nsec_t nsec; - } table[] = { - { "seconds", NSEC_PER_SEC }, - { "second", NSEC_PER_SEC }, - { "sec", NSEC_PER_SEC }, - { "s", NSEC_PER_SEC }, - { "minutes", NSEC_PER_MINUTE }, - { "minute", NSEC_PER_MINUTE }, - { "min", NSEC_PER_MINUTE }, - { "months", NSEC_PER_MONTH }, - { "month", NSEC_PER_MONTH }, - { "msec", NSEC_PER_MSEC }, - { "ms", NSEC_PER_MSEC }, - { "m", NSEC_PER_MINUTE }, - { "hours", NSEC_PER_HOUR }, - { "hour", NSEC_PER_HOUR }, - { "hr", NSEC_PER_HOUR }, - { "h", NSEC_PER_HOUR }, - { "days", NSEC_PER_DAY }, - { "day", NSEC_PER_DAY }, - { "d", NSEC_PER_DAY }, - { "weeks", NSEC_PER_WEEK }, - { "week", NSEC_PER_WEEK }, - { "w", NSEC_PER_WEEK }, - { "years", NSEC_PER_YEAR }, - { "year", NSEC_PER_YEAR }, - { "y", NSEC_PER_YEAR }, - { "usec", NSEC_PER_USEC }, - { "us", NSEC_PER_USEC }, - { "nsec", 1ULL }, - { "ns", 1ULL }, - { "", 1ULL }, /* default is nsec */ - }; - - const char *p; - nsec_t r = 0; - - assert(t); - assert(nsec); - - p = t; - do { - long long l; - char *e; - unsigned i; - - errno = 0; - l = strtoll(p, &e, 10); - - if (errno != 0) - return -errno; - - if (l < 0) - return -ERANGE; - - if (e == p) - return -EINVAL; - - e += strspn(e, WHITESPACE); - - for (i = 0; i < ELEMENTSOF(table); i++) - if (startswith(e, table[i].suffix)) { - r += (nsec_t) l * table[i].nsec; - p = e + strlen(table[i].suffix); - break; - } - - if (i >= ELEMENTSOF(table)) - return -EINVAL; - - } while (*p != 0); - - *nsec = r; - - return 0; -} - -int parse_bytes(const char *t, off_t *bytes) { - static const struct { - const char *suffix; - off_t factor; - } table[] = { - { "B", 1 }, - { "K", 1024ULL }, - { "M", 1024ULL*1024ULL }, - { "G", 1024ULL*1024ULL*1024ULL }, - { "T", 1024ULL*1024ULL*1024ULL*1024ULL }, - { "P", 1024ULL*1024ULL*1024ULL*1024ULL*1024ULL }, - { "E", 1024ULL*1024ULL*1024ULL*1024ULL*1024ULL*1024ULL }, - { "", 1 }, - }; - - const char *p; - off_t r = 0; - - assert(t); - assert(bytes); - - p = t; - do { - long long l; - char *e; - unsigned i; - - errno = 0; - l = strtoll(p, &e, 10); - - if (errno != 0) - return -errno; - - if (l < 0) - return -ERANGE; - - if (e == p) - return -EINVAL; - - e += strspn(e, WHITESPACE); - - for (i = 0; i < ELEMENTSOF(table); i++) - if (startswith(e, table[i].suffix)) { - r += (off_t) l * table[i].factor; - p = e + strlen(table[i].suffix); - break; - } - - if (i >= ELEMENTSOF(table)) - return -EINVAL; - - } while (*p != 0); - - *bytes = r; - - return 0; -} - -int make_stdio(int fd) { - int r, s, t; - - assert(fd >= 0); - - r = dup3(fd, STDIN_FILENO, 0); - s = dup3(fd, STDOUT_FILENO, 0); - t = dup3(fd, STDERR_FILENO, 0); - - if (fd >= 3) - close_nointr_nofail(fd); - - if (r < 0 || s < 0 || t < 0) - return -errno; - - /* We rely here that the new fd has O_CLOEXEC not set */ - - return 0; -} - -int make_null_stdio(void) { - int null_fd; - - null_fd = open("/dev/null", O_RDWR|O_NOCTTY); - if (null_fd < 0) - return -errno; - - return make_stdio(null_fd); -} - -bool is_device_path(const char *path) { - - /* Returns true on paths that refer to a device, either in - * sysfs or in /dev */ - - return - path_startswith(path, "/dev/") || - path_startswith(path, "/sys/"); -} - -int dir_is_empty(const char *path) { - _cleanup_closedir_ DIR *d; - int r; - - d = opendir(path); - if (!d) - return -errno; - - for (;;) { - struct dirent *de; - union dirent_storage buf; - - r = readdir_r(d, &buf.de, &de); - if (r > 0) - return -r; - - if (!de) - return 1; - - if (!ignore_file(de->d_name)) - return 0; - } -} - -unsigned long long random_ull(void) { - _cleanup_close_ int fd; - uint64_t ull; - ssize_t r; - - fd = open("/dev/urandom", O_RDONLY|O_CLOEXEC|O_NOCTTY); - if (fd < 0) - goto fallback; - - r = loop_read(fd, &ull, sizeof(ull), true); - if (r != sizeof(ull)) - goto fallback; - - return ull; - -fallback: - return random() * RAND_MAX + random(); -} - -void rename_process(const char name[8]) { - assert(name); - - /* This is a like a poor man's setproctitle(). It changes the - * comm field, argv[0], and also the glibc's internally used - * name of the process. For the first one a limit of 16 chars - * applies, to the second one usually one of 10 (i.e. length - * of "/sbin/init"), to the third one one of 7 (i.e. length of - * "systemd"). If you pass a longer string it will be - * truncated */ - - prctl(PR_SET_NAME, name); - - if (program_invocation_name) - strncpy(program_invocation_name, name, strlen(program_invocation_name)); - - if (saved_argc > 0) { - int i; - - if (saved_argv[0]) - strncpy(saved_argv[0], name, strlen(saved_argv[0])); - - for (i = 1; i < saved_argc; i++) { - if (!saved_argv[i]) - break; - - memset(saved_argv[i], 0, strlen(saved_argv[i])); - } - } -} - -void sigset_add_many(sigset_t *ss, ...) { - va_list ap; - int sig; - - assert(ss); - - va_start(ap, ss); - while ((sig = va_arg(ap, int)) > 0) - assert_se(sigaddset(ss, sig) == 0); - va_end(ap); -} - -char* gethostname_malloc(void) { - struct utsname u; - - assert_se(uname(&u) >= 0); - - if (!isempty(u.nodename) && !streq(u.nodename, "(none)")) - return strdup(u.nodename); - - return strdup(u.sysname); -} - -bool hostname_is_set(void) { - struct utsname u; - - assert_se(uname(&u) >= 0); - - return !isempty(u.nodename) && !streq(u.nodename, "(none)"); -} - -static char *lookup_uid(uid_t uid) { - long bufsize; - char *name; - _cleanup_free_ char *buf = NULL; - struct passwd pwbuf, *pw = NULL; - - /* Shortcut things to avoid NSS lookups */ - if (uid == 0) - return strdup("root"); - - bufsize = sysconf(_SC_GETPW_R_SIZE_MAX); - if (bufsize <= 0) - bufsize = 4096; - - buf = malloc(bufsize); - if (!buf) - return NULL; - - if (getpwuid_r(uid, &pwbuf, buf, bufsize, &pw) == 0 && pw) - return strdup(pw->pw_name); - - if (asprintf(&name, "%lu", (unsigned long) uid) < 0) - return NULL; - - return name; -} - -char* getlogname_malloc(void) { - uid_t uid; - struct stat st; - - if (isatty(STDIN_FILENO) && fstat(STDIN_FILENO, &st) >= 0) - uid = st.st_uid; - else - uid = getuid(); - - return lookup_uid(uid); -} - -char *getusername_malloc(void) { - const char *e; - - e = getenv("USER"); - if (e) - return strdup(e); - - return lookup_uid(getuid()); -} - -int getttyname_malloc(int fd, char **r) { - char path[PATH_MAX], *c; - int k; - - assert(r); - - k = ttyname_r(fd, path, sizeof(path)); - if (k != 0) - return -k; - - char_array_0(path); - - c = strdup(startswith(path, "/dev/") ? path + 5 : path); - if (!c) - return -ENOMEM; - - *r = c; - return 0; -} - -int getttyname_harder(int fd, char **r) { - int k; - char *s; - - k = getttyname_malloc(fd, &s); - if (k < 0) - return k; - - if (streq(s, "tty")) { - free(s); - return get_ctty(0, NULL, r); - } - - *r = s; - return 0; -} - -int get_ctty_devnr(pid_t pid, dev_t *d) { - int k; - char line[LINE_MAX], *p, *fn; - unsigned long ttynr; - FILE *f; - - if (asprintf(&fn, "/proc/%lu/stat", (unsigned long) (pid <= 0 ? getpid() : pid)) < 0) - return -ENOMEM; - - f = fopen(fn, "re"); - free(fn); - if (!f) - return -errno; - - if (!fgets(line, sizeof(line), f)) { - k = feof(f) ? -EIO : -errno; - fclose(f); - return k; - } - - fclose(f); - - p = strrchr(line, ')'); - if (!p) - return -EIO; - - p++; - - if (sscanf(p, " " - "%*c " /* state */ - "%*d " /* ppid */ - "%*d " /* pgrp */ - "%*d " /* session */ - "%lu ", /* ttynr */ - &ttynr) != 1) - return -EIO; - - *d = (dev_t) ttynr; - return 0; -} - -int get_ctty(pid_t pid, dev_t *_devnr, char **r) { - int k; - char fn[PATH_MAX], *s, *b, *p; - dev_t devnr; - - assert(r); - - k = get_ctty_devnr(pid, &devnr); - if (k < 0) - return k; - - snprintf(fn, sizeof(fn), "/dev/char/%u:%u", major(devnr), minor(devnr)); - char_array_0(fn); - - if ((k = readlink_malloc(fn, &s)) < 0) { - - if (k != -ENOENT) - return k; - - /* This is an ugly hack */ - if (major(devnr) == 136) { - if (asprintf(&b, "pts/%lu", (unsigned long) minor(devnr)) < 0) - return -ENOMEM; - - *r = b; - if (_devnr) - *_devnr = devnr; - - return 0; - } - - /* Probably something like the ptys which have no - * symlink in /dev/char. Let's return something - * vaguely useful. */ - - if (!(b = strdup(fn + 5))) - return -ENOMEM; - - *r = b; - if (_devnr) - *_devnr = devnr; - - return 0; - } - - if (startswith(s, "/dev/")) - p = s + 5; - else if (startswith(s, "../")) - p = s + 3; - else - p = s; - - b = strdup(p); - free(s); - - if (!b) - return -ENOMEM; - - *r = b; - if (_devnr) - *_devnr = devnr; - - return 0; -} - -int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev) { - DIR *d; - int ret = 0; - - assert(fd >= 0); - - /* This returns the first error we run into, but nevertheless - * tries to go on. This closes the passed fd. */ - - d = fdopendir(fd); - if (!d) { - close_nointr_nofail(fd); - - return errno == ENOENT ? 0 : -errno; - } - - for (;;) { - struct dirent *de; - union dirent_storage buf; - bool is_dir, keep_around; - struct stat st; - int r; - - r = readdir_r(d, &buf.de, &de); - if (r != 0 && ret == 0) { - ret = -r; - break; - } - - if (!de) - break; - - if (streq(de->d_name, ".") || streq(de->d_name, "..")) - continue; - - if (de->d_type == DT_UNKNOWN || - honour_sticky || - (de->d_type == DT_DIR && root_dev)) { - if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) { - if (ret == 0 && errno != ENOENT) - ret = -errno; - continue; - } - - is_dir = S_ISDIR(st.st_mode); - keep_around = - honour_sticky && - (st.st_uid == 0 || st.st_uid == getuid()) && - (st.st_mode & S_ISVTX); - } else { - is_dir = de->d_type == DT_DIR; - keep_around = false; - } - - if (is_dir) { - int subdir_fd; - - /* if root_dev is set, remove subdirectories only, if device is same as dir */ - if (root_dev && st.st_dev != root_dev->st_dev) - continue; - - subdir_fd = openat(fd, de->d_name, - O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW|O_NOATIME); - if (subdir_fd < 0) { - if (ret == 0 && errno != ENOENT) - ret = -errno; - continue; - } - - r = rm_rf_children_dangerous(subdir_fd, only_dirs, honour_sticky, root_dev); - if (r < 0 && ret == 0) - ret = r; - - if (!keep_around) - if (unlinkat(fd, de->d_name, AT_REMOVEDIR) < 0) { - if (ret == 0 && errno != ENOENT) - ret = -errno; - } - - } else if (!only_dirs && !keep_around) { - - if (unlinkat(fd, de->d_name, 0) < 0) { - if (ret == 0 && errno != ENOENT) - ret = -errno; - } - } - } - - closedir(d); - - return ret; -} - -int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev) { - struct statfs s; - - assert(fd >= 0); - - if (fstatfs(fd, &s) < 0) { - close_nointr_nofail(fd); - return -errno; - } - - /* We refuse to clean disk file systems with this call. This - * is extra paranoia just to be sure we never ever remove - * non-state data */ - - if (s.f_type != TMPFS_MAGIC && - s.f_type != RAMFS_MAGIC) { - log_error("Attempted to remove disk file system, and we can't allow that."); - close_nointr_nofail(fd); - return -EPERM; - } - - return rm_rf_children_dangerous(fd, only_dirs, honour_sticky, root_dev); -} - -static int rm_rf_internal(const char *path, bool only_dirs, bool delete_root, bool honour_sticky, bool dangerous) { - int fd, r; - struct statfs s; - - assert(path); - - /* We refuse to clean the root file system with this - * call. This is extra paranoia to never cause a really - * seriously broken system. */ - if (path_equal(path, "/")) { - log_error("Attempted to remove entire root file system, and we can't allow that."); - return -EPERM; - } - - fd = open(path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW|O_NOATIME); - if (fd < 0) { - - if (errno != ENOTDIR) - return -errno; - - if (!dangerous) { - if (statfs(path, &s) < 0) - return -errno; - - if (s.f_type != TMPFS_MAGIC && - s.f_type != RAMFS_MAGIC) { - log_error("Attempted to remove disk file system, and we can't allow that."); - return -EPERM; - } - } - - if (delete_root && !only_dirs) - if (unlink(path) < 0 && errno != ENOENT) - return -errno; - - return 0; - } - - if (!dangerous) { - if (fstatfs(fd, &s) < 0) { - close_nointr_nofail(fd); - return -errno; - } - - if (s.f_type != TMPFS_MAGIC && - s.f_type != RAMFS_MAGIC) { - log_error("Attempted to remove disk file system, and we can't allow that."); - close_nointr_nofail(fd); - return -EPERM; - } - } - - r = rm_rf_children_dangerous(fd, only_dirs, honour_sticky, NULL); - if (delete_root) { - - if (honour_sticky && file_is_priv_sticky(path) > 0) - return r; - - if (rmdir(path) < 0 && errno != ENOENT) { - if (r == 0) - r = -errno; - } - } - - return r; -} - -int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky) { - return rm_rf_internal(path, only_dirs, delete_root, honour_sticky, false); -} - -int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky) { - return rm_rf_internal(path, only_dirs, delete_root, honour_sticky, true); -} - -int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid) { - assert(path); - - /* Under the assumption that we are running privileged we - * first change the access mode and only then hand out - * ownership to avoid a window where access is too open. */ - - if (mode != (mode_t) -1) - if (chmod(path, mode) < 0) - return -errno; - - if (uid != (uid_t) -1 || gid != (gid_t) -1) - if (chown(path, uid, gid) < 0) - return -errno; - - return 0; -} - -int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid) { - assert(fd >= 0); - - /* Under the assumption that we are running privileged we - * first change the access mode and only then hand out - * ownership to avoid a window where access is too open. */ - - if (fchmod(fd, mode) < 0) - return -errno; - - if (fchown(fd, uid, gid) < 0) - return -errno; - - return 0; -} - -cpu_set_t* cpu_set_malloc(unsigned *ncpus) { - cpu_set_t *r; - unsigned n = 1024; - - /* Allocates the cpuset in the right size */ - - for (;;) { - if (!(r = CPU_ALLOC(n))) - return NULL; - - if (sched_getaffinity(0, CPU_ALLOC_SIZE(n), r) >= 0) { - CPU_ZERO_S(CPU_ALLOC_SIZE(n), r); - - if (ncpus) - *ncpus = n; - - return r; - } - - CPU_FREE(r); - - if (errno != EINVAL) - return NULL; - - n *= 2; - } -} - -int status_vprintf(const char *status, bool ellipse, const char *format, va_list ap) { - static const char status_indent[] = " "; /* "[" STATUS "] " */ - _cleanup_free_ char *s = NULL; - _cleanup_close_ int fd = -1; - struct iovec iovec[5]; - int n = 0; - - assert(format); - - /* This is independent of logging, as status messages are - * optional and go exclusively to the console. */ - - if (vasprintf(&s, format, ap) < 0) - return log_oom(); - - fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return fd; - - if (ellipse) { - char *e; - size_t emax, sl; - int c; - - c = fd_columns(fd); - if (c <= 0) - c = 80; - - sl = status ? sizeof(status_indent)-1 : 0; - - emax = c - sl - 1; - if (emax < 3) - emax = 3; - - e = ellipsize(s, emax, 75); - if (e) { - free(s); - s = e; - } - } - - zero(iovec); - - if (status) { - if (!isempty(status)) { - IOVEC_SET_STRING(iovec[n++], "["); - IOVEC_SET_STRING(iovec[n++], status); - IOVEC_SET_STRING(iovec[n++], "] "); - } else - IOVEC_SET_STRING(iovec[n++], status_indent); - } - - IOVEC_SET_STRING(iovec[n++], s); - IOVEC_SET_STRING(iovec[n++], "\n"); - - if (writev(fd, iovec, n) < 0) - return -errno; - - return 0; -} - -int status_printf(const char *status, bool ellipse, const char *format, ...) { - va_list ap; - int r; - - assert(format); - - va_start(ap, format); - r = status_vprintf(status, ellipse, format, ap); - va_end(ap); - - return r; -} - -int status_welcome(void) { - int r; - _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL; - - r = parse_env_file("/etc/os-release", NEWLINE, - "PRETTY_NAME", &pretty_name, - "ANSI_COLOR", &ansi_color, - NULL); - if (r < 0 && r != -ENOENT) - log_warning("Failed to read /etc/os-release: %s", strerror(-r)); - - return status_printf(NULL, false, - "\nWelcome to \x1B[%sm%s\x1B[0m!\n", - isempty(ansi_color) ? "1" : ansi_color, - isempty(pretty_name) ? "Linux" : pretty_name); -} - -char *replace_env(const char *format, char **env) { - enum { - WORD, - CURLY, - VARIABLE - } state = WORD; - - const char *e, *word = format; - char *r = NULL, *k; - - assert(format); - - for (e = format; *e; e ++) { - - switch (state) { - - case WORD: - if (*e == '$') - state = CURLY; - break; - - case CURLY: - if (*e == '{') { - if (!(k = strnappend(r, word, e-word-1))) - goto fail; - - free(r); - r = k; - - word = e-1; - state = VARIABLE; - - } else if (*e == '$') { - if (!(k = strnappend(r, word, e-word))) - goto fail; - - free(r); - r = k; - - word = e+1; - state = WORD; - } else - state = WORD; - break; - - case VARIABLE: - if (*e == '}') { - const char *t; - - if (!(t = strv_env_get_with_length(env, word+2, e-word-2))) - t = ""; - - if (!(k = strappend(r, t))) - goto fail; - - free(r); - r = k; - - word = e+1; - state = WORD; - } - break; - } - } - - if (!(k = strnappend(r, word, e-word))) - goto fail; - - free(r); - return k; - -fail: - free(r); - return NULL; -} - -char **replace_env_argv(char **argv, char **env) { - char **r, **i; - unsigned k = 0, l = 0; - - l = strv_length(argv); - - if (!(r = new(char*, l+1))) - return NULL; - - STRV_FOREACH(i, argv) { - - /* If $FOO appears as single word, replace it by the split up variable */ - if ((*i)[0] == '$' && (*i)[1] != '{') { - char *e; - char **w, **m; - unsigned q; - - if ((e = strv_env_get(env, *i+1))) { - - if (!(m = strv_split_quoted(e))) { - r[k] = NULL; - strv_free(r); - return NULL; - } - } else - m = NULL; - - q = strv_length(m); - l = l + q - 1; - - if (!(w = realloc(r, sizeof(char*) * (l+1)))) { - r[k] = NULL; - strv_free(r); - strv_free(m); - return NULL; - } - - r = w; - if (m) { - memcpy(r + k, m, q * sizeof(char*)); - free(m); - } - - k += q; - continue; - } - - /* If ${FOO} appears as part of a word, replace it by the variable as-is */ - if (!(r[k++] = replace_env(*i, env))) { - strv_free(r); - return NULL; - } - } - - r[k] = NULL; - return r; -} - -int fd_columns(int fd) { - struct winsize ws; - zero(ws); - - if (ioctl(fd, TIOCGWINSZ, &ws) < 0) - return -errno; - - if (ws.ws_col <= 0) - return -EIO; - - return ws.ws_col; -} - -unsigned columns(void) { - const char *e; - unsigned c; - - if (_likely_(cached_columns > 0)) - return cached_columns; - - c = 0; - e = getenv("COLUMNS"); - if (e) - safe_atou(e, &c); - - if (c <= 0) - c = fd_columns(STDOUT_FILENO); - - if (c <= 0) - c = 80; - - cached_columns = c; - return c; -} - -int fd_lines(int fd) { - struct winsize ws; - zero(ws); - - if (ioctl(fd, TIOCGWINSZ, &ws) < 0) - return -errno; - - if (ws.ws_row <= 0) - return -EIO; - - return ws.ws_row; -} - -unsigned lines(void) { - const char *e; - unsigned l; - - if (_likely_(cached_lines > 0)) - return cached_lines; - - l = 0; - e = getenv("LINES"); - if (e) - safe_atou(e, &l); - - if (l <= 0) - l = fd_lines(STDOUT_FILENO); - - if (l <= 0) - l = 24; - - cached_lines = l; - return cached_lines; -} - -/* intended to be used as a SIGWINCH sighandler */ -void columns_lines_cache_reset(int signum) { - cached_columns = 0; - cached_lines = 0; -} - -bool on_tty(void) { - static int cached_on_tty = -1; - - if (_unlikely_(cached_on_tty < 0)) - cached_on_tty = isatty(STDOUT_FILENO) > 0; - - return cached_on_tty; -} - -int running_in_chroot(void) { - struct stat a, b; - - zero(a); - zero(b); - - /* Only works as root */ - - if (stat("/proc/1/root", &a) < 0) - return -errno; - - if (stat("/", &b) < 0) - return -errno; - - return - a.st_dev != b.st_dev || - a.st_ino != b.st_ino; -} - -char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent) { - size_t x; - char *r; - - assert(s); - assert(percent <= 100); - assert(new_length >= 3); - - if (old_length <= 3 || old_length <= new_length) - return strndup(s, old_length); - - r = new0(char, new_length+1); - if (!r) - return r; - - x = (new_length * percent) / 100; - - if (x > new_length - 3) - x = new_length - 3; - - memcpy(r, s, x); - r[x] = '.'; - r[x+1] = '.'; - r[x+2] = '.'; - memcpy(r + x + 3, - s + old_length - (new_length - x - 3), - new_length - x - 3); - - return r; -} - -char *ellipsize(const char *s, size_t length, unsigned percent) { - return ellipsize_mem(s, strlen(s), length, percent); -} - -int touch(const char *path) { - int fd; - - assert(path); - - /* This just opens the file for writing, ensuring it - * exists. It doesn't call utimensat() the way /usr/bin/touch - * does it. */ - - fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0644); - if (fd < 0) - return -errno; - - close_nointr_nofail(fd); - return 0; -} - -char *unquote(const char *s, const char* quotes) { - size_t l; - assert(s); - - /* This is rather stupid, simply removes the heading and - * trailing quotes if there is one. Doesn't care about - * escaping or anything. We should make this smarter one - * day...*/ - - l = strlen(s); - if (l < 2) - return strdup(s); - - if (strchr(quotes, s[0]) && s[l-1] == s[0]) - return strndup(s+1, l-2); - - return strdup(s); -} - -char *normalize_env_assignment(const char *s) { - _cleanup_free_ char *name = NULL, *value = NULL, *p = NULL; - char *eq, *r; - - eq = strchr(s, '='); - if (!eq) { - char *t; - - r = strdup(s); - if (!r) - return NULL; - - t = strstrip(r); - if (t == r) - return r; - - memmove(r, t, strlen(t) + 1); - return r; - } - - name = strndup(s, eq - s); - if (!name) - return NULL; - - p = strdup(eq + 1); - if (!p) - return NULL; - - value = unquote(strstrip(p), QUOTES); - if (!value) - return NULL; - - if (asprintf(&r, "%s=%s", strstrip(name), value) < 0) - r = NULL; - - return r; -} - -int wait_for_terminate(pid_t pid, siginfo_t *status) { - siginfo_t dummy; - - assert(pid >= 1); - - if (!status) - status = &dummy; - - for (;;) { - zero(*status); - - if (waitid(P_PID, pid, status, WEXITED) < 0) { - - if (errno == EINTR) - continue; - - return -errno; - } - - return 0; - } -} - -int wait_for_terminate_and_warn(const char *name, pid_t pid) { - int r; - siginfo_t status; - - assert(name); - assert(pid > 1); - - r = wait_for_terminate(pid, &status); - if (r < 0) { - log_warning("Failed to wait for %s: %s", name, strerror(-r)); - return r; - } - - if (status.si_code == CLD_EXITED) { - if (status.si_status != 0) { - log_warning("%s failed with error code %i.", name, status.si_status); - return status.si_status; - } - - log_debug("%s succeeded.", name); - return 0; - - } else if (status.si_code == CLD_KILLED || - status.si_code == CLD_DUMPED) { - - log_warning("%s terminated by signal %s.", name, signal_to_string(status.si_status)); - return -EPROTO; - } - - log_warning("%s failed due to unknown reason.", name); - return -EPROTO; -} - -_noreturn_ void freeze(void) { - - /* Make sure nobody waits for us on a socket anymore */ - close_all_fds(NULL, 0); - - sync(); - - for (;;) - pause(); -} - -bool null_or_empty(struct stat *st) { - assert(st); - - if (S_ISREG(st->st_mode) && st->st_size <= 0) - return true; - - if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) - return true; - - return false; -} - -int null_or_empty_path(const char *fn) { - struct stat st; - - assert(fn); - - if (stat(fn, &st) < 0) - return -errno; - - return null_or_empty(&st); -} - -DIR *xopendirat(int fd, const char *name, int flags) { - int nfd; - DIR *d; - - nfd = openat(fd, name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|flags); - if (nfd < 0) - return NULL; - - d = fdopendir(nfd); - if (!d) { - close_nointr_nofail(nfd); - return NULL; - } - - return d; -} - -int signal_from_string_try_harder(const char *s) { - int signo; - assert(s); - - signo = signal_from_string(s); - if (signo <= 0) - if (startswith(s, "SIG")) - return signal_from_string(s+3); - - return signo; -} - -void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) { - - assert(f); - assert(name); - assert(t); - - if (!dual_timestamp_is_set(t)) - return; - - fprintf(f, "%s=%llu %llu\n", - name, - (unsigned long long) t->realtime, - (unsigned long long) t->monotonic); -} - -void dual_timestamp_deserialize(const char *value, dual_timestamp *t) { - unsigned long long a, b; - - assert(value); - assert(t); - - if (sscanf(value, "%lli %llu", &a, &b) != 2) - log_debug("Failed to parse finish timestamp value %s", value); - else { - t->realtime = a; - t->monotonic = b; - } -} - -static char *tag_to_udev_node(const char *tagvalue, const char *by) { - char *dn, *t, *u; - int r; - - /* FIXME: to follow udev's logic 100% we need to leave valid - * UTF8 chars unescaped */ - - u = unquote(tagvalue, "\"\'"); - if (u == NULL) - return NULL; - - t = xescape(u, "/ "); - free(u); - - if (t == NULL) - return NULL; - - r = asprintf(&dn, "/dev/disk/by-%s/%s", by, t); - free(t); - - if (r < 0) - return NULL; - - return dn; -} - -char *fstab_node_to_udev_node(const char *p) { - assert(p); - - if (startswith(p, "LABEL=")) - return tag_to_udev_node(p+6, "label"); - - if (startswith(p, "UUID=")) - return tag_to_udev_node(p+5, "uuid"); - - if (startswith(p, "PARTUUID=")) - return tag_to_udev_node(p+9, "partuuid"); - - if (startswith(p, "PARTLABEL=")) - return tag_to_udev_node(p+10, "partlabel"); - - return strdup(p); -} - -bool tty_is_vc(const char *tty) { - assert(tty); - - if (startswith(tty, "/dev/")) - tty += 5; - - return vtnr_from_tty(tty) >= 0; -} - -bool tty_is_console(const char *tty) { - assert(tty); - - if (startswith(tty, "/dev/")) - tty += 5; - - return streq(tty, "console"); -} - -int vtnr_from_tty(const char *tty) { - int i, r; - - assert(tty); - - if (startswith(tty, "/dev/")) - tty += 5; - - if (!startswith(tty, "tty") ) - return -EINVAL; - - if (tty[3] < '0' || tty[3] > '9') - return -EINVAL; - - r = safe_atoi(tty+3, &i); - if (r < 0) - return r; - - if (i < 0 || i > 63) - return -EINVAL; - - return i; -} - -bool tty_is_vc_resolve(const char *tty) { - char *active = NULL; - bool b; - - assert(tty); - - if (startswith(tty, "/dev/")) - tty += 5; - - /* Resolve where /dev/console is pointing to, if /sys is - * actually ours (i.e. not read-only-mounted which is a sign - * for container setups) */ - if (streq(tty, "console") && path_is_read_only_fs("/sys") <= 0) - if (read_one_line_file("/sys/class/tty/console/active", &active) >= 0) { - /* If multiple log outputs are configured the - * last one is what /dev/console points to */ - tty = strrchr(active, ' '); - if (tty) - tty++; - else - tty = active; - } - - b = tty_is_vc(tty); - free(active); - - return b; -} - -const char *default_term_for_tty(const char *tty) { - assert(tty); - - return tty_is_vc_resolve(tty) ? "TERM=linux" : "TERM=vt102"; -} - -bool dirent_is_file(const struct dirent *de) { - assert(de); - - if (ignore_file(de->d_name)) - return false; - - if (de->d_type != DT_REG && - de->d_type != DT_LNK && - de->d_type != DT_UNKNOWN) - return false; - - return true; -} - -bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix) { - assert(de); - - if (de->d_type != DT_REG && - de->d_type != DT_LNK && - de->d_type != DT_UNKNOWN) - return false; - - if (ignore_file_allow_backup(de->d_name)) - return false; - - return endswith(de->d_name, suffix); -} - -int execute_command(const char *command, char *const argv[]) -{ - - pid_t pid; - int status; - - if ((status = access(command, X_OK)) != 0) - return status; - - if ((pid = fork()) < 0) { - log_error("Failed to fork: %m"); - return pid; - } - - if (pid == 0) { - - execv(command, argv); - - log_error("Failed to execute %s: %m", command); - _exit(EXIT_FAILURE); - } - else while (1) - { - siginfo_t si; - - int r = waitid(P_PID, pid, &si, WEXITED); - - if (!is_clean_exit(si.si_code, si.si_status, NULL)) { - if (si.si_code == CLD_EXITED) - log_error("%s exited with exit status %i.", command, si.si_status); - else - log_error("%s terminated by signal %s.", command, signal_to_string(si.si_status)); - } else - log_debug("%s exited successfully.", command); - - return si.si_status; - - } -} - -void execute_directory(const char *directory, DIR *d, char *argv[]) { - DIR *_d = NULL; - struct dirent *de; - Hashmap *pids = NULL; - - assert(directory); - - /* Executes all binaries in a directory in parallel and waits - * until all they all finished. */ - - if (!d) { - if (!(_d = opendir(directory))) { - - if (errno == ENOENT) - return; - - log_error("Failed to enumerate directory %s: %m", directory); - return; - } - - d = _d; - } - - if (!(pids = hashmap_new(trivial_hash_func, trivial_compare_func))) { - log_error("Failed to allocate set."); - goto finish; - } - - while ((de = readdir(d))) { - char *path; - pid_t pid; - int k; - - if (!dirent_is_file(de)) - continue; - - if (asprintf(&path, "%s/%s", directory, de->d_name) < 0) { - log_oom(); - continue; - } - - if ((pid = fork()) < 0) { - log_error("Failed to fork: %m"); - free(path); - continue; - } - - if (pid == 0) { - char *_argv[2]; - /* Child */ - - if (!argv) { - _argv[0] = path; - _argv[1] = NULL; - argv = _argv; - } else - argv[0] = path; - - execv(path, argv); - - log_error("Failed to execute %s: %m", path); - _exit(EXIT_FAILURE); - } - - log_debug("Spawned %s as %lu", path, (unsigned long) pid); - - if ((k = hashmap_put(pids, UINT_TO_PTR(pid), path)) < 0) { - log_error("Failed to add PID to set: %s", strerror(-k)); - free(path); - } - } - - while (!hashmap_isempty(pids)) { - pid_t pid = PTR_TO_UINT(hashmap_first_key(pids)); - siginfo_t si; - char *path; - - zero(si); - if (waitid(P_PID, pid, &si, WEXITED) < 0) { - - if (errno == EINTR) - continue; - - log_error("waitid() failed: %m"); - goto finish; - } - - if ((path = hashmap_remove(pids, UINT_TO_PTR(si.si_pid)))) { - if (!is_clean_exit(si.si_code, si.si_status, NULL)) { - if (si.si_code == CLD_EXITED) - log_error("%s exited with exit status %i.", path, si.si_status); - else - log_error("%s terminated by signal %s.", path, signal_to_string(si.si_status)); - } else - log_debug("%s exited successfully.", path); - - free(path); - } - } - -finish: - if (_d) - closedir(_d); - - if (pids) - hashmap_free_free(pids); -} - -int kill_and_sigcont(pid_t pid, int sig) { - int r; - - r = kill(pid, sig) < 0 ? -errno : 0; - - if (r >= 0) - kill(pid, SIGCONT); - - return r; -} - -bool nulstr_contains(const char*nulstr, const char *needle) { - const char *i; - - if (!nulstr) - return false; - - NULSTR_FOREACH(i, nulstr) - if (streq(i, needle)) - return true; - - return false; -} - -bool plymouth_running(void) { - return access("/run/plymouth/pid", F_OK) >= 0; -} - -char* strshorten(char *s, size_t l) { - assert(s); - - if (l < strlen(s)) - s[l] = 0; - - return s; -} - -static bool hostname_valid_char(char c) { - return - (c >= 'a' && c <= 'z') || - (c >= 'A' && c <= 'Z') || - (c >= '0' && c <= '9') || - c == '-' || - c == '_' || - c == '.'; -} - -bool hostname_is_valid(const char *s) { - const char *p; - - if (isempty(s)) - return false; - - for (p = s; *p; p++) - if (!hostname_valid_char(*p)) - return false; - - if (p-s > HOST_NAME_MAX) - return false; - - return true; -} - -char* hostname_cleanup(char *s) { - char *p, *d; - - for (p = s, d = s; *p; p++) - if ((*p >= 'a' && *p <= 'z') || - (*p >= 'A' && *p <= 'Z') || - (*p >= '0' && *p <= '9') || - *p == '-' || - *p == '_' || - *p == '.') - *(d++) = *p; - - *d = 0; - - strshorten(s, HOST_NAME_MAX); - return s; -} - -int pipe_eof(int fd) { - struct pollfd pollfd; - int r; - - zero(pollfd); - pollfd.fd = fd; - pollfd.events = POLLIN|POLLHUP; - - r = poll(&pollfd, 1, 0); - if (r < 0) - return -errno; - - if (r == 0) - return 0; - - return pollfd.revents & POLLHUP; -} - -int fd_wait_for_event(int fd, int event, usec_t t) { - struct pollfd pollfd; - int r; - - zero(pollfd); - pollfd.fd = fd; - pollfd.events = event; - - r = poll(&pollfd, 1, t == (usec_t) -1 ? -1 : (int) (t / USEC_PER_MSEC)); - if (r < 0) - return -errno; - - if (r == 0) - return 0; - - return pollfd.revents; -} - -int fopen_temporary(const char *path, FILE **_f, char **_temp_path) { - FILE *f; - char *t; - const char *fn; - size_t k; - int fd; - - assert(path); - assert(_f); - assert(_temp_path); - - t = new(char, strlen(path) + 1 + 6 + 1); - if (!t) - return -ENOMEM; - - fn = path_get_file_name(path); - k = fn-path; - memcpy(t, path, k); - t[k] = '.'; - stpcpy(stpcpy(t+k+1, fn), "XXXXXX"); - - fd = mkostemp(t, O_WRONLY|O_CLOEXEC); - if (fd < 0) { - free(t); - return -errno; - } - - f = fdopen(fd, "we"); - if (!f) { - unlink(t); - free(t); - return -errno; - } - - *_f = f; - *_temp_path = t; - - return 0; -} - -int terminal_vhangup_fd(int fd) { - assert(fd >= 0); - - if (ioctl(fd, TIOCVHANGUP) < 0) - return -errno; - - return 0; -} - -int terminal_vhangup(const char *name) { - int fd, r; - - fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return fd; - - r = terminal_vhangup_fd(fd); - close_nointr_nofail(fd); - - return r; -} - -int vt_disallocate(const char *name) { - int fd, r; - unsigned u; - - /* Deallocate the VT if possible. If not possible - * (i.e. because it is the active one), at least clear it - * entirely (including the scrollback buffer) */ - - if (!startswith(name, "/dev/")) - return -EINVAL; - - if (!tty_is_vc(name)) { - /* So this is not a VT. I guess we cannot deallocate - * it then. But let's at least clear the screen */ - - fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return fd; - - loop_write(fd, - "\033[r" /* clear scrolling region */ - "\033[H" /* move home */ - "\033[2J", /* clear screen */ - 10, false); - close_nointr_nofail(fd); - - return 0; - } - - if (!startswith(name, "/dev/tty")) - return -EINVAL; - - r = safe_atou(name+8, &u); - if (r < 0) - return r; - - if (u <= 0) - return -EINVAL; - - /* Try to deallocate */ - fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return fd; - - r = ioctl(fd, VT_DISALLOCATE, u); - close_nointr_nofail(fd); - - if (r >= 0) - return 0; - - if (errno != EBUSY) - return -errno; - - /* Couldn't deallocate, so let's clear it fully with - * scrollback */ - fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC); - if (fd < 0) - return fd; - - loop_write(fd, - "\033[r" /* clear scrolling region */ - "\033[H" /* move home */ - "\033[3J", /* clear screen including scrollback, requires Linux 2.6.40 */ - 10, false); - close_nointr_nofail(fd); - - return 0; -} - -int copy_file(const char *from, const char *to) { - int r, fdf, fdt; - - assert(from); - assert(to); - - fdf = open(from, O_RDONLY|O_CLOEXEC|O_NOCTTY); - if (fdf < 0) - return -errno; - - fdt = open(to, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOCTTY, 0644); - if (fdt < 0) { - close_nointr_nofail(fdf); - return -errno; - } - - for (;;) { - char buf[PIPE_BUF]; - ssize_t n, k; - - n = read(fdf, buf, sizeof(buf)); - if (n < 0) { - r = -errno; - - close_nointr_nofail(fdf); - close_nointr(fdt); - unlink(to); - - return r; - } - - if (n == 0) - break; - - errno = 0; - k = loop_write(fdt, buf, n, false); - if (n != k) { - r = k < 0 ? k : (errno ? -errno : -EIO); - - close_nointr_nofail(fdf); - close_nointr(fdt); - - unlink(to); - return r; - } - } - - close_nointr_nofail(fdf); - r = close_nointr(fdt); - - if (r < 0) { - unlink(to); - return r; - } - - return 0; -} - -int symlink_atomic(const char *from, const char *to) { - char *x; - _cleanup_free_ char *t; - const char *fn; - size_t k; - unsigned long long ull; - unsigned i; - int r; - - assert(from); - assert(to); - - t = new(char, strlen(to) + 1 + 16 + 1); - if (!t) - return -ENOMEM; - - fn = path_get_file_name(to); - k = fn-to; - memcpy(t, to, k); - t[k] = '.'; - x = stpcpy(t+k+1, fn); - - ull = random_ull(); - for (i = 0; i < 16; i++) { - *(x++) = hexchar(ull & 0xF); - ull >>= 4; - } - - *x = 0; - - if (symlink(from, t) < 0) - return -errno; - - if (rename(t, to) < 0) { - r = -errno; - unlink(t); - return r; - } - - return 0; -} - -bool display_is_local(const char *display) { - assert(display); - - return - display[0] == ':' && - display[1] >= '0' && - display[1] <= '9'; -} - -int socket_from_display(const char *display, char **path) { - size_t k; - char *f, *c; - - assert(display); - assert(path); - - if (!display_is_local(display)) - return -EINVAL; - - k = strspn(display+1, "0123456789"); - - f = new(char, sizeof("/tmp/.X11-unix/X") + k); - if (!f) - return -ENOMEM; - - c = stpcpy(f, "/tmp/.X11-unix/X"); - memcpy(c, display+1, k); - c[k] = 0; - - *path = f; - - return 0; -} - -int get_user_creds( - const char **username, - uid_t *uid, gid_t *gid, - const char **home, - const char **shell) { - - struct passwd *p; - uid_t u; - - assert(username); - assert(*username); - - /* We enforce some special rules for uid=0: in order to avoid - * NSS lookups for root we hardcode its data. */ - - if (streq(*username, "root") || streq(*username, "0")) { - *username = "root"; - - if (uid) - *uid = 0; - - if (gid) - *gid = 0; - - if (home) - *home = "/root"; - - if (shell) - *shell = "/bin/sh"; - - return 0; - } - - if (parse_uid(*username, &u) >= 0) { - errno = 0; - p = getpwuid(u); - - /* If there are multiple users with the same id, make - * sure to leave $USER to the configured value instead - * of the first occurrence in the database. However if - * the uid was configured by a numeric uid, then let's - * pick the real username from /etc/passwd. */ - if (p) - *username = p->pw_name; - } else { - errno = 0; - p = getpwnam(*username); - } - - if (!p) - return errno != 0 ? -errno : -ESRCH; - - if (uid) - *uid = p->pw_uid; - - if (gid) - *gid = p->pw_gid; - - if (home) - *home = p->pw_dir; - - if (shell) - *shell = p->pw_shell; - - return 0; -} - -int get_group_creds(const char **groupname, gid_t *gid) { - struct group *g; - gid_t id; - - assert(groupname); - - /* We enforce some special rules for gid=0: in order to avoid - * NSS lookups for root we hardcode its data. */ - - if (streq(*groupname, "root") || streq(*groupname, "0")) { - *groupname = "root"; - - if (gid) - *gid = 0; - - return 0; - } - - if (parse_gid(*groupname, &id) >= 0) { - errno = 0; - g = getgrgid(id); - - if (g) - *groupname = g->gr_name; - } else { - errno = 0; - g = getgrnam(*groupname); - } - - if (!g) - return errno != 0 ? -errno : -ESRCH; - - if (gid) - *gid = g->gr_gid; - - return 0; -} - -int in_group(const char *name) { - gid_t gid, *gids; - int ngroups_max, r, i; - - r = get_group_creds(&name, &gid); - if (r < 0) - return r; - - if (getgid() == gid) - return 1; - - if (getegid() == gid) - return 1; - - ngroups_max = sysconf(_SC_NGROUPS_MAX); - assert(ngroups_max > 0); - - gids = alloca(sizeof(gid_t) * ngroups_max); - - r = getgroups(ngroups_max, gids); - if (r < 0) - return -errno; - - for (i = 0; i < r; i++) - if (gids[i] == gid) - return 1; - - return 0; -} - -int glob_exists(const char *path) { - glob_t g; - int r, k; - - assert(path); - - zero(g); - errno = 0; - k = glob(path, GLOB_NOSORT|GLOB_BRACE, NULL, &g); - - if (k == GLOB_NOMATCH) - r = 0; - else if (k == GLOB_NOSPACE) - r = -ENOMEM; - else if (k == 0) - r = !strv_isempty(g.gl_pathv); - else - r = errno ? -errno : -EIO; - - globfree(&g); - - return r; -} - -int dirent_ensure_type(DIR *d, struct dirent *de) { - struct stat st; - - assert(d); - assert(de); - - if (de->d_type != DT_UNKNOWN) - return 0; - - if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) - return -errno; - - de->d_type = - S_ISREG(st.st_mode) ? DT_REG : - S_ISDIR(st.st_mode) ? DT_DIR : - S_ISLNK(st.st_mode) ? DT_LNK : - S_ISFIFO(st.st_mode) ? DT_FIFO : - S_ISSOCK(st.st_mode) ? DT_SOCK : - S_ISCHR(st.st_mode) ? DT_CHR : - S_ISBLK(st.st_mode) ? DT_BLK : - DT_UNKNOWN; - - return 0; -} - -int in_search_path(const char *path, char **search) { - char **i, *parent; - int r; - - r = path_get_parent(path, &parent); - if (r < 0) - return r; - - r = 0; - - STRV_FOREACH(i, search) { - if (path_equal(parent, *i)) { - r = 1; - break; - } - } - - free(parent); - - return r; -} - -int get_files_in_directory(const char *path, char ***list) { - DIR *d; - int r = 0; - unsigned n = 0; - char **l = NULL; - - assert(path); - - /* Returns all files in a directory in *list, and the number - * of files as return value. If list is NULL returns only the - * number */ - - d = opendir(path); - if (!d) - return -errno; - - for (;;) { - struct dirent *de; - union dirent_storage buf; - int k; - - k = readdir_r(d, &buf.de, &de); - if (k != 0) { - r = -k; - goto finish; - } - - if (!de) - break; - - dirent_ensure_type(d, de); - - if (!dirent_is_file(de)) - continue; - - if (list) { - if ((unsigned) r >= n) { - char **t; - - n = MAX(16, 2*r); - t = realloc(l, sizeof(char*) * n); - if (!t) { - r = -ENOMEM; - goto finish; - } - - l = t; - } - - assert((unsigned) r < n); - - l[r] = strdup(de->d_name); - if (!l[r]) { - r = -ENOMEM; - goto finish; - } - - l[++r] = NULL; - } else - r++; - } - -finish: - if (d) - closedir(d); - - if (r >= 0) { - if (list) - *list = l; - } else - strv_free(l); - - return r; -} - -char *strjoin(const char *x, ...) { - va_list ap; - size_t l; - char *r, *p; - - va_start(ap, x); - - if (x) { - l = strlen(x); - - for (;;) { - const char *t; - size_t n; - - t = va_arg(ap, const char *); - if (!t) - break; - - n = strlen(t); - if (n > ((size_t) -1) - l) { - va_end(ap); - return NULL; - } - - l += n; - } - } else - l = 0; - - va_end(ap); - - r = new(char, l+1); - if (!r) - return NULL; - - if (x) { - p = stpcpy(r, x); - - va_start(ap, x); - - for (;;) { - const char *t; - - t = va_arg(ap, const char *); - if (!t) - break; - - p = stpcpy(p, t); - } - - va_end(ap); - } else - r[0] = 0; - - return r; -} - -bool is_main_thread(void) { - static __thread int cached = 0; - - if (_unlikely_(cached == 0)) - cached = getpid() == gettid() ? 1 : -1; - - return cached > 0; -} - -int block_get_whole_disk(dev_t d, dev_t *ret) { - char *p, *s; - int r; - unsigned n, m; - - assert(ret); - - /* If it has a queue this is good enough for us */ - if (asprintf(&p, "/sys/dev/block/%u:%u/queue", major(d), minor(d)) < 0) - return -ENOMEM; - - r = access(p, F_OK); - free(p); - - if (r >= 0) { - *ret = d; - return 0; - } - - /* If it is a partition find the originating device */ - if (asprintf(&p, "/sys/dev/block/%u:%u/partition", major(d), minor(d)) < 0) - return -ENOMEM; - - r = access(p, F_OK); - free(p); - - if (r < 0) - return -ENOENT; - - /* Get parent dev_t */ - if (asprintf(&p, "/sys/dev/block/%u:%u/../dev", major(d), minor(d)) < 0) - return -ENOMEM; - - r = read_one_line_file(p, &s); - free(p); - - if (r < 0) - return r; - - r = sscanf(s, "%u:%u", &m, &n); - free(s); - - if (r != 2) - return -EINVAL; - - /* Only return this if it is really good enough for us. */ - if (asprintf(&p, "/sys/dev/block/%u:%u/queue", m, n) < 0) - return -ENOMEM; - - r = access(p, F_OK); - free(p); - - if (r >= 0) { - *ret = makedev(m, n); - return 0; - } - - return -ENOENT; -} - -int file_is_priv_sticky(const char *p) { - struct stat st; - - assert(p); - - if (lstat(p, &st) < 0) - return -errno; - - return - (st.st_uid == 0 || st.st_uid == getuid()) && - (st.st_mode & S_ISVTX); -} - -static const char *const ioprio_class_table[] = { - [IOPRIO_CLASS_NONE] = "none", - [IOPRIO_CLASS_RT] = "realtime", - [IOPRIO_CLASS_BE] = "best-effort", - [IOPRIO_CLASS_IDLE] = "idle" -}; - -DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(ioprio_class, int, INT_MAX); - -static const char *const sigchld_code_table[] = { - [CLD_EXITED] = "exited", - [CLD_KILLED] = "killed", - [CLD_DUMPED] = "dumped", - [CLD_TRAPPED] = "trapped", - [CLD_STOPPED] = "stopped", - [CLD_CONTINUED] = "continued", -}; - -DEFINE_STRING_TABLE_LOOKUP(sigchld_code, int); - -static const char *const log_facility_unshifted_table[LOG_NFACILITIES] = { - [LOG_FAC(LOG_KERN)] = "kern", - [LOG_FAC(LOG_USER)] = "user", - [LOG_FAC(LOG_MAIL)] = "mail", - [LOG_FAC(LOG_DAEMON)] = "daemon", - [LOG_FAC(LOG_AUTH)] = "auth", - [LOG_FAC(LOG_SYSLOG)] = "syslog", - [LOG_FAC(LOG_LPR)] = "lpr", - [LOG_FAC(LOG_NEWS)] = "news", - [LOG_FAC(LOG_UUCP)] = "uucp", - [LOG_FAC(LOG_CRON)] = "cron", - [LOG_FAC(LOG_AUTHPRIV)] = "authpriv", - [LOG_FAC(LOG_FTP)] = "ftp", - [LOG_FAC(LOG_LOCAL0)] = "local0", - [LOG_FAC(LOG_LOCAL1)] = "local1", - [LOG_FAC(LOG_LOCAL2)] = "local2", - [LOG_FAC(LOG_LOCAL3)] = "local3", - [LOG_FAC(LOG_LOCAL4)] = "local4", - [LOG_FAC(LOG_LOCAL5)] = "local5", - [LOG_FAC(LOG_LOCAL6)] = "local6", - [LOG_FAC(LOG_LOCAL7)] = "local7" -}; - -DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(log_facility_unshifted, int, LOG_FAC(~0)); - -static const char *const log_level_table[] = { - [LOG_EMERG] = "emerg", - [LOG_ALERT] = "alert", - [LOG_CRIT] = "crit", - [LOG_ERR] = "err", - [LOG_WARNING] = "warning", - [LOG_NOTICE] = "notice", - [LOG_INFO] = "info", - [LOG_DEBUG] = "debug" -}; - -DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(log_level, int, LOG_DEBUG); - -static const char* const sched_policy_table[] = { - [SCHED_OTHER] = "other", - [SCHED_BATCH] = "batch", - [SCHED_IDLE] = "idle", - [SCHED_FIFO] = "fifo", - [SCHED_RR] = "rr" -}; - -DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(sched_policy, int, INT_MAX); - -static const char* const rlimit_table[] = { - [RLIMIT_CPU] = "LimitCPU", - [RLIMIT_FSIZE] = "LimitFSIZE", - [RLIMIT_DATA] = "LimitDATA", - [RLIMIT_STACK] = "LimitSTACK", - [RLIMIT_CORE] = "LimitCORE", - [RLIMIT_RSS] = "LimitRSS", - [RLIMIT_NOFILE] = "LimitNOFILE", - [RLIMIT_AS] = "LimitAS", - [RLIMIT_NPROC] = "LimitNPROC", - [RLIMIT_MEMLOCK] = "LimitMEMLOCK", - [RLIMIT_LOCKS] = "LimitLOCKS", - [RLIMIT_SIGPENDING] = "LimitSIGPENDING", - [RLIMIT_MSGQUEUE] = "LimitMSGQUEUE", - [RLIMIT_NICE] = "LimitNICE", - [RLIMIT_RTPRIO] = "LimitRTPRIO", - [RLIMIT_RTTIME] = "LimitRTTIME" -}; - -DEFINE_STRING_TABLE_LOOKUP(rlimit, int); - -static const char* const ip_tos_table[] = { - [IPTOS_LOWDELAY] = "low-delay", - [IPTOS_THROUGHPUT] = "throughput", - [IPTOS_RELIABILITY] = "reliability", - [IPTOS_LOWCOST] = "low-cost", -}; - -DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(ip_tos, int, 0xff); - -static const char *const __signal_table[] = { - [SIGHUP] = "HUP", - [SIGINT] = "INT", - [SIGQUIT] = "QUIT", - [SIGILL] = "ILL", - [SIGTRAP] = "TRAP", - [SIGABRT] = "ABRT", - [SIGBUS] = "BUS", - [SIGFPE] = "FPE", - [SIGKILL] = "KILL", - [SIGUSR1] = "USR1", - [SIGSEGV] = "SEGV", - [SIGUSR2] = "USR2", - [SIGPIPE] = "PIPE", - [SIGALRM] = "ALRM", - [SIGTERM] = "TERM", -#ifdef SIGSTKFLT - [SIGSTKFLT] = "STKFLT", /* Linux on SPARC doesn't know SIGSTKFLT */ -#endif - [SIGCHLD] = "CHLD", - [SIGCONT] = "CONT", - [SIGSTOP] = "STOP", - [SIGTSTP] = "TSTP", - [SIGTTIN] = "TTIN", - [SIGTTOU] = "TTOU", - [SIGURG] = "URG", - [SIGXCPU] = "XCPU", - [SIGXFSZ] = "XFSZ", - [SIGVTALRM] = "VTALRM", - [SIGPROF] = "PROF", - [SIGWINCH] = "WINCH", - [SIGIO] = "IO", - [SIGPWR] = "PWR", - [SIGSYS] = "SYS" -}; - -DEFINE_PRIVATE_STRING_TABLE_LOOKUP(__signal, int); - -const char *signal_to_string(int signo) { - static __thread char buf[12]; - const char *name; - - name = __signal_to_string(signo); - if (name) - return name; - - if (signo >= SIGRTMIN && signo <= SIGRTMAX) - snprintf(buf, sizeof(buf) - 1, "RTMIN+%d", signo - SIGRTMIN); - else - snprintf(buf, sizeof(buf) - 1, "%d", signo); - char_array_0(buf); - return buf; -} - -int signal_from_string(const char *s) { - int signo; - int offset = 0; - unsigned u; - - signo = __signal_from_string(s); - if (signo > 0) - return signo; - - if (startswith(s, "RTMIN+")) { - s += 6; - offset = SIGRTMIN; - } - if (safe_atou(s, &u) >= 0) { - signo = (int) u + offset; - if (signo > 0 && signo < _NSIG) - return signo; - } - return -1; -} - -bool kexec_loaded(void) { - bool loaded = false; - char *s; - - if (read_one_line_file("/sys/kernel/kexec_loaded", &s) >= 0) { - if (s[0] == '1') - loaded = true; - free(s); - } - return loaded; -} - -int strdup_or_null(const char *a, char **b) { - char *c; - - assert(b); - - if (!a) { - *b = NULL; - return 0; - } - - c = strdup(a); - if (!c) - return -ENOMEM; - - *b = c; - return 0; -} - -int prot_from_flags(int flags) { - - switch (flags & O_ACCMODE) { - - case O_RDONLY: - return PROT_READ; - - case O_WRONLY: - return PROT_WRITE; - - case O_RDWR: - return PROT_READ|PROT_WRITE; - - default: - return -EINVAL; - } -} - -char *format_bytes(char *buf, size_t l, off_t t) { - unsigned i; - - static const struct { - const char *suffix; - off_t factor; - } table[] = { - { "E", 1024ULL*1024ULL*1024ULL*1024ULL*1024ULL*1024ULL }, - { "P", 1024ULL*1024ULL*1024ULL*1024ULL*1024ULL }, - { "T", 1024ULL*1024ULL*1024ULL*1024ULL }, - { "G", 1024ULL*1024ULL*1024ULL }, - { "M", 1024ULL*1024ULL }, - { "K", 1024ULL }, - }; - - for (i = 0; i < ELEMENTSOF(table); i++) { - - if (t >= table[i].factor) { - snprintf(buf, l, - "%llu.%llu%s", - (unsigned long long) (t / table[i].factor), - (unsigned long long) (((t*10ULL) / table[i].factor) % 10ULL), - table[i].suffix); - - goto finish; - } - } - - snprintf(buf, l, "%lluB", (unsigned long long) t); - -finish: - buf[l-1] = 0; - return buf; - -} - -void* memdup(const void *p, size_t l) { - void *r; - - assert(p); - - r = malloc(l); - if (!r) - return NULL; - - memcpy(r, p, l); - return r; -} - -int fd_inc_sndbuf(int fd, size_t n) { - int r, value; - socklen_t l = sizeof(value); - - r = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, &l); - if (r >= 0 && - l == sizeof(value) && - (size_t) value >= n*2) - return 0; - - value = (int) n; - r = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)); - if (r < 0) - return -errno; - - return 1; -} - -int fd_inc_rcvbuf(int fd, size_t n) { - int r, value; - socklen_t l = sizeof(value); - - r = getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, &l); - if (r >= 0 && - l == sizeof(value) && - (size_t) value >= n*2) - return 0; - - value = (int) n; - r = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)); - if (r < 0) - return -errno; - - return 1; -} - -int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...) { - pid_t parent_pid, agent_pid; - int fd; - bool stdout_is_tty, stderr_is_tty; - unsigned n, i; - va_list ap; - char **l; - - assert(pid); - assert(path); - - parent_pid = getpid(); - - /* Spawns a temporary TTY agent, making sure it goes away when - * we go away */ - - agent_pid = fork(); - if (agent_pid < 0) - return -errno; - - if (agent_pid != 0) { - *pid = agent_pid; - return 0; - } - - /* In the child: - * - * Make sure the agent goes away when the parent dies */ - if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0) - _exit(EXIT_FAILURE); - - /* Check whether our parent died before we were able - * to set the death signal */ - if (getppid() != parent_pid) - _exit(EXIT_SUCCESS); - - /* Don't leak fds to the agent */ - close_all_fds(except, n_except); - - stdout_is_tty = isatty(STDOUT_FILENO); - stderr_is_tty = isatty(STDERR_FILENO); - - if (!stdout_is_tty || !stderr_is_tty) { - /* Detach from stdout/stderr. and reopen - * /dev/tty for them. This is important to - * ensure that when systemctl is started via - * popen() or a similar call that expects to - * read EOF we actually do generate EOF and - * not delay this indefinitely by because we - * keep an unused copy of stdin around. */ - fd = open("/dev/tty", O_WRONLY); - if (fd < 0) { - log_error("Failed to open /dev/tty: %m"); - _exit(EXIT_FAILURE); - } - - if (!stdout_is_tty) - dup2(fd, STDOUT_FILENO); - - if (!stderr_is_tty) - dup2(fd, STDERR_FILENO); - - if (fd > 2) - close(fd); - } - - /* Count arguments */ - va_start(ap, path); - for (n = 0; va_arg(ap, char*); n++) - ; - va_end(ap); - - /* Allocate strv */ - l = alloca(sizeof(char *) * (n + 1)); - - /* Fill in arguments */ - va_start(ap, path); - for (i = 0; i <= n; i++) - l[i] = va_arg(ap, char*); - va_end(ap); - - execv(path, l); - _exit(EXIT_FAILURE); -} - -int setrlimit_closest(int resource, const struct rlimit *rlim) { - struct rlimit highest, fixed; - - assert(rlim); - - if (setrlimit(resource, rlim) >= 0) - return 0; - - if (errno != EPERM) - return -errno; - - /* So we failed to set the desired setrlimit, then let's try - * to get as close as we can */ - assert_se(getrlimit(resource, &highest) == 0); - - fixed.rlim_cur = MIN(rlim->rlim_cur, highest.rlim_max); - fixed.rlim_max = MIN(rlim->rlim_max, highest.rlim_max); - - if (setrlimit(resource, &fixed) < 0) - return -errno; - - return 0; -} - -int getenv_for_pid(pid_t pid, const char *field, char **_value) { - char path[sizeof("/proc/")-1+10+sizeof("/environ")], *value = NULL; - int r; - FILE *f; - bool done = false; - size_t l; - - assert(field); - assert(_value); - - if (pid == 0) - pid = getpid(); - - snprintf(path, sizeof(path), "/proc/%lu/environ", (unsigned long) pid); - char_array_0(path); - - f = fopen(path, "re"); - if (!f) - return -errno; - - l = strlen(field); - r = 0; - - do { - char line[LINE_MAX]; - unsigned i; - - for (i = 0; i < sizeof(line)-1; i++) { - int c; - - c = getc(f); - if (_unlikely_(c == EOF)) { - done = true; - break; - } else if (c == 0) - break; - - line[i] = c; - } - line[i] = 0; - - if (memcmp(line, field, l) == 0 && line[l] == '=') { - value = strdup(line + l + 1); - if (!value) { - r = -ENOMEM; - break; - } - - r = 1; - break; - } - - } while (!done); - - fclose(f); - - if (r >= 0) - *_value = value; - - return r; -} - -int can_sleep(const char *type) { - char *w, *state; - size_t l, k; - int r; - _cleanup_free_ char *p = NULL; - - assert(type); - - r = read_one_line_file("/sys/power/state", &p); - if (r < 0) - return r == -ENOENT ? 0 : r; - - k = strlen(type); - FOREACH_WORD_SEPARATOR(w, l, p, WHITESPACE, state) - if (l == k && memcmp(w, type, l) == 0) - return true; - - return false; -} - -int can_sleep_disk(const char *type) { - char *w, *state; - size_t l, k; - int r; - _cleanup_free_ char *p = NULL; - - assert(type); - - r = read_one_line_file("/sys/power/disk", &p); - if (r < 0) - return r == -ENOENT ? 0 : r; - - k = strlen(type); - FOREACH_WORD_SEPARATOR(w, l, p, WHITESPACE, state) { - if (l == k && memcmp(w, type, l) == 0) - return true; - - if (l == k + 2 && w[0] == '[' && memcmp(w + 1, type, l - 2) == 0 && w[l-1] == ']') - return true; - } - - return false; -} - -bool is_valid_documentation_url(const char *url) { - assert(url); - - if (startswith(url, "http://") && url[7]) - return true; - - if (startswith(url, "https://") && url[8]) - return true; - - if (startswith(url, "file:") && url[5]) - return true; - - if (startswith(url, "info:") && url[5]) - return true; - - if (startswith(url, "man:") && url[4]) - return true; - - return false; -} - -bool in_initrd(void) { - static __thread int saved = -1; - struct statfs s; - - if (saved >= 0) - return saved; - - /* We make two checks here: - * - * 1. the flag file /etc/initrd-release must exist - * 2. the root file system must be a memory file system - * - * The second check is extra paranoia, since misdetecting an - * initrd can have bad bad consequences due the initrd - * emptying when transititioning to the main systemd. - */ - - saved = access("/etc/initrd-release", F_OK) >= 0 && - statfs("/", &s) >= 0 && - (s.f_type == TMPFS_MAGIC || s.f_type == RAMFS_MAGIC); - - return saved; -} - -void warn_melody(void) { - _cleanup_close_ int fd = -1; - - fd = open("/dev/console", O_WRONLY|O_CLOEXEC|O_NOCTTY); - if (fd < 0) - return; - - /* Yeah, this is synchronous. Kinda sucks. But well... */ - - ioctl(fd, KIOCSOUND, (int)(1193180/440)); - usleep(125*USEC_PER_MSEC); - - ioctl(fd, KIOCSOUND, (int)(1193180/220)); - usleep(125*USEC_PER_MSEC); - - ioctl(fd, KIOCSOUND, (int)(1193180/220)); - usleep(125*USEC_PER_MSEC); - - ioctl(fd, KIOCSOUND, 0); -} - -int make_console_stdio(void) { - int fd, r; - - /* Make /dev/console the controlling terminal and stdin/stdout/stderr */ - - fd = acquire_terminal("/dev/console", false, true, true, (usec_t) -1); - if (fd < 0) { - log_error("Failed to acquire terminal: %s", strerror(-fd)); - return fd; - } - - r = make_stdio(fd); - if (r < 0) { - log_error("Failed to duplicate terminal fd: %s", strerror(-r)); - return r; - } - - return 0; -} - -int get_home_dir(char **_h) { - char *h; - const char *e; - uid_t u; - struct passwd *p; - - assert(_h); - - /* Take the user specified one */ - e = getenv("HOME"); - if (e) { - h = strdup(e); - if (!h) - return -ENOMEM; - - *_h = h; - return 0; - } - - /* Hardcode home directory for root to avoid NSS */ - u = getuid(); - if (u == 0) { - h = strdup("/root"); - if (!h) - return -ENOMEM; - - *_h = h; - return 0; - } - - /* Check the database... */ - errno = 0; - p = getpwuid(u); - if (!p) - return errno ? -errno : -ESRCH; - - if (!path_is_absolute(p->pw_dir)) - return -EINVAL; - - h = strdup(p->pw_dir); - if (!h) - return -ENOMEM; - - *_h = h; - return 0; -} - -int get_shell(char **_sh) { - char *sh; - const char *e; - uid_t u; - struct passwd *p; - - assert(_sh); - - /* Take the user specified one */ - e = getenv("SHELL"); - if (e) { - sh = strdup(e); - if (!sh) - return -ENOMEM; - - *_sh = sh; - return 0; - } - - /* Hardcode home directory for root to avoid NSS */ - u = getuid(); - if (u == 0) { - sh = strdup("/bin/sh"); - if (!sh) - return -ENOMEM; - - *_sh = sh; - return 0; - } - - /* Check the database... */ - errno = 0; - p = getpwuid(u); - if (!p) - return errno ? -errno : -ESRCH; - - if (!path_is_absolute(p->pw_shell)) - return -EINVAL; - - sh = strdup(p->pw_shell); - if (!sh) - return -ENOMEM; - - *_sh = sh; - return 0; -} - -void freep(void *p) { - free(*(void**) p); -} - -void fclosep(FILE **f) { - if (*f) - fclose(*f); -} - -void closep(int *fd) { - if (*fd >= 0) - close_nointr_nofail(*fd); -} - -void closedirp(DIR **d) { - if (*d) - closedir(*d); -} - -void umaskp(mode_t *u) { - umask(*u); -} - -bool filename_is_safe(const char *p) { - - if (isempty(p)) - return false; - - if (strchr(p, '/')) - return false; - - if (streq(p, ".")) - return false; - - if (streq(p, "..")) - return false; - - if (strlen(p) > FILENAME_MAX) - return false; - - return true; -} - -bool string_is_safe(const char *p) { - const char *t; - - assert(p); - - for (t = p; *t; t++) { - if (*t > 0 && *t < ' ') - return false; - - if (strchr("\\\"\'", *t)) - return false; - } - - return true; -} - -int parse_timestamp(const char *t, usec_t *usec) { - const char *k; - struct tm tm, copy; - time_t x; - usec_t plus = 0, minus = 0, ret; - int r; - - /* - * Allowed syntaxes: - * - * 2012-09-22 16:34:22 - * 2012-09-22 16:34 (seconds will be set to 0) - * 2012-09-22 (time will be set to 00:00:00) - * 16:34:22 (date will be set to today) - * 16:34 (date will be set to today, seconds to 0) - * now - * yesterday (time is set to 00:00:00) - * today (time is set to 00:00:00) - * tomorrow (time is set to 00:00:00) - * +5min - * -5days - * - */ - - assert(t); - assert(usec); - - x = time(NULL); - assert_se(localtime_r(&x, &tm)); - - if (streq(t, "now")) - goto finish; - - else if (streq(t, "today")) { - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; - - } else if (streq(t, "yesterday")) { - tm.tm_mday --; - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; - - } else if (streq(t, "tomorrow")) { - tm.tm_mday ++; - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; - - } else if (t[0] == '+') { - - r = parse_usec(t+1, &plus); - if (r < 0) - return r; - - goto finish; - } else if (t[0] == '-') { - - r = parse_usec(t+1, &minus); - if (r < 0) - return r; - - goto finish; - } - - copy = tm; - k = strptime(t, "%y-%m-%d %H:%M:%S", &tm); - if (k && *k == 0) - goto finish; - - tm = copy; - k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm); - if (k && *k == 0) - goto finish; - - tm = copy; - k = strptime(t, "%y-%m-%d %H:%M", &tm); - if (k && *k == 0) { - tm.tm_sec = 0; - goto finish; - } - - tm = copy; - k = strptime(t, "%Y-%m-%d %H:%M", &tm); - if (k && *k == 0) { - tm.tm_sec = 0; - goto finish; - } - - tm = copy; - k = strptime(t, "%y-%m-%d", &tm); - if (k && *k == 0) { - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; - } - - tm = copy; - k = strptime(t, "%Y-%m-%d", &tm); - if (k && *k == 0) { - tm.tm_sec = tm.tm_min = tm.tm_hour = 0; - goto finish; - } - - tm = copy; - k = strptime(t, "%H:%M:%S", &tm); - if (k && *k == 0) - goto finish; - - tm = copy; - k = strptime(t, "%H:%M", &tm); - if (k && *k == 0) { - tm.tm_sec = 0; - goto finish; - } - - return -EINVAL; - -finish: - x = mktime(&tm); - if (x == (time_t) -1) - return -EINVAL; - - ret = (usec_t) x * USEC_PER_SEC; - - ret += plus; - if (ret > minus) - ret -= minus; - else - ret = 0; - - *usec = ret; - - return 0; -} - -/* hey glibc, APIs with callbacks without a user pointer are so useless */ -void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size, - int (*compar) (const void *, const void *, void *), void *arg) { - size_t l, u, idx; - const void *p; - int comparison; - - l = 0; - u = nmemb; - while (l < u) { - idx = (l + u) / 2; - p = (void *)(((const char *) base) + (idx * size)); - comparison = compar(key, p, arg); - if (comparison < 0) - u = idx; - else if (comparison > 0) - l = idx + 1; - else - return (void *)p; - } - return NULL; -} - -bool is_locale_utf8(void) { - const char *set; - static int cached_answer = -1; - - if (cached_answer >= 0) - goto out; - - if (!setlocale(LC_ALL, "")) { - cached_answer = true; - goto out; - } - - set = nl_langinfo(CODESET); - if (!set) { - cached_answer = true; - goto out; - } - - cached_answer = streq(set, "UTF-8"); -out: - return (bool)cached_answer; -} - -const char *draw_special_char(DrawSpecialChar ch) { - static const char *draw_table[2][_DRAW_SPECIAL_CHAR_MAX] = { - /* UTF-8 */ { - [DRAW_TREE_VERT] = "\342\224\202 ", /* │ */ - [DRAW_TREE_BRANCH] = "\342\224\234\342\224\200", /* ├─ */ - [DRAW_TREE_RIGHT] = "\342\224\224\342\224\200", /* └─ */ - [DRAW_TRIANGULAR_BULLET] = "\342\200\243 ", /* ‣ */ - }, - /* ASCII fallback */ { - [DRAW_TREE_VERT] = "| ", - [DRAW_TREE_BRANCH] = "|-", - [DRAW_TREE_RIGHT] = "`-", - [DRAW_TRIANGULAR_BULLET] = "> ", - } - }; - - return draw_table[!is_locale_utf8()][ch]; -} - -char *strreplace(const char *text, const char *old_string, const char *new_string) { - const char *f; - char *t, *r; - size_t l, old_len, new_len; - - assert(text); - assert(old_string); - assert(new_string); - - old_len = strlen(old_string); - new_len = strlen(new_string); - - l = strlen(text); - r = new(char, l+1); - if (!r) - return NULL; - - f = text; - t = r; - while (*f) { - char *a; - size_t d, nl; - - if (!startswith(f, old_string)) { - *(t++) = *(f++); - continue; - } - - d = t - r; - nl = l - old_len + new_len; - a = realloc(r, nl + 1); - if (!a) - goto oom; - - l = nl; - r = a; - t = r + d; - - t = stpcpy(t, new_string); - f += old_len; - } - - *t = 0; - return r; - -oom: - free(r); - return NULL; -} diff --git a/src/udev/util.h b/src/udev/util.h deleted file mode 100644 index b9230e38bc..0000000000 --- a/src/udev/util.h +++ /dev/null @@ -1,616 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <inttypes.h> -#include <time.h> -#include <sys/time.h> -#include <stdarg.h> -#include <stdbool.h> -#include <stdlib.h> -#include <stdio.h> -#include <signal.h> -#include <sched.h> -#include <limits.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <dirent.h> -#include <sys/resource.h> -#include <stddef.h> - -#include "macro.h" - -typedef uint64_t usec_t; -typedef uint64_t nsec_t; - -typedef struct dual_timestamp { - usec_t realtime; - usec_t monotonic; -} dual_timestamp; - -union dirent_storage { - struct dirent de; - uint8_t storage[offsetof(struct dirent, d_name) + - ((NAME_MAX + 1 + sizeof(long)) & ~(sizeof(long) - 1))]; -}; - -#define MSEC_PER_SEC 1000ULL -#define USEC_PER_SEC 1000000ULL -#define USEC_PER_MSEC 1000ULL -#define NSEC_PER_SEC 1000000000ULL -#define NSEC_PER_MSEC 1000000ULL -#define NSEC_PER_USEC 1000ULL - -#define USEC_PER_MINUTE (60ULL*USEC_PER_SEC) -#define NSEC_PER_MINUTE (60ULL*NSEC_PER_SEC) -#define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE) -#define NSEC_PER_HOUR (60ULL*NSEC_PER_MINUTE) -#define USEC_PER_DAY (24ULL*USEC_PER_HOUR) -#define NSEC_PER_DAY (24ULL*NSEC_PER_HOUR) -#define USEC_PER_WEEK (7ULL*USEC_PER_DAY) -#define NSEC_PER_WEEK (7ULL*NSEC_PER_DAY) -#define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC) -#define NSEC_PER_MONTH (2629800ULL*NSEC_PER_SEC) -#define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC) -#define NSEC_PER_YEAR (31557600ULL*NSEC_PER_SEC) - -/* What is interpreted as whitespace? */ -#define WHITESPACE " \t\n\r" -#define NEWLINE "\n\r" -#define QUOTES "\"\'" -#define COMMENTS "#;\n" - -#define FORMAT_TIMESTAMP_MAX (5+11+9+4+1) -#define FORMAT_TIMESTAMP_PRETTY_MAX 256 -#define FORMAT_TIMESPAN_MAX 64 -#define FORMAT_BYTES_MAX 8 - -#define ANSI_HIGHLIGHT_ON "\x1B[1;39m" -#define ANSI_HIGHLIGHT_RED_ON "\x1B[1;31m" -#define ANSI_HIGHLIGHT_GREEN_ON "\x1B[1;32m" -#define ANSI_HIGHLIGHT_YELLOW_ON "\x1B[1;33m" -#define ANSI_HIGHLIGHT_OFF "\x1B[0m" - -bool is_efiboot(void); - -usec_t now(clockid_t clock); - -dual_timestamp* dual_timestamp_get(dual_timestamp *ts); -dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u); - -#define dual_timestamp_is_set(ts) ((ts)->realtime > 0) - -usec_t timespec_load(const struct timespec *ts); -struct timespec *timespec_store(struct timespec *ts, usec_t u); - -usec_t timeval_load(const struct timeval *tv); -struct timeval *timeval_store(struct timeval *tv, usec_t u); - -size_t page_size(void); -#define PAGE_ALIGN(l) ALIGN_TO((l), page_size()) - -#define streq(a,b) (strcmp((a),(b)) == 0) -#define strneq(a, b, n) (strncmp((a), (b), (n)) == 0) - -bool streq_ptr(const char *a, const char *b); - -#define new(t, n) ((t*) malloc_multiply(sizeof(t), (n))) - -#define new0(t, n) ((t*) calloc((n), sizeof(t))) - -#define newa(t, n) ((t*) alloca(sizeof(t)*(n))) - -#define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n))) - -#define malloc0(n) (calloc((n), 1)) - -static inline const char* yes_no(bool b) { - return b ? "yes" : "no"; -} - -static inline const char* strempty(const char *s) { - return s ? s : ""; -} - -static inline const char* strnull(const char *s) { - return s ? s : "(null)"; -} - -static inline const char *strna(const char *s) { - return s ? s : "n/a"; -} - -static inline bool isempty(const char *p) { - return !p || !p[0]; -} - -char *endswith(const char *s, const char *postfix); -char *startswith(const char *s, const char *prefix); -char *startswith_no_case(const char *s, const char *prefix); - -bool first_word(const char *s, const char *word); - -int close_nointr(int fd); -void close_nointr_nofail(int fd); -void close_many(const int fds[], unsigned n_fd); - -int parse_boolean(const char *v); -int parse_usec(const char *t, usec_t *usec); -int parse_nsec(const char *t, nsec_t *nsec); -int parse_bytes(const char *t, off_t *bytes); -int parse_pid(const char *s, pid_t* ret_pid); -int parse_uid(const char *s, uid_t* ret_uid); -#define parse_gid(s, ret_uid) parse_uid(s, ret_uid) - -int safe_atou(const char *s, unsigned *ret_u); -int safe_atoi(const char *s, int *ret_i); - -int safe_atollu(const char *s, unsigned long long *ret_u); -int safe_atolli(const char *s, long long int *ret_i); - -#if __WORDSIZE == 32 -static inline int safe_atolu(const char *s, unsigned long *ret_u) { - assert_cc(sizeof(unsigned long) == sizeof(unsigned)); - return safe_atou(s, (unsigned*) ret_u); -} -static inline int safe_atoli(const char *s, long int *ret_u) { - assert_cc(sizeof(long int) == sizeof(int)); - return safe_atoi(s, (int*) ret_u); -} -#else -static inline int safe_atolu(const char *s, unsigned long *ret_u) { - assert_cc(sizeof(unsigned long) == sizeof(unsigned long long)); - return safe_atollu(s, (unsigned long long*) ret_u); -} -static inline int safe_atoli(const char *s, long int *ret_u) { - assert_cc(sizeof(long int) == sizeof(long long int)); - return safe_atolli(s, (long long int*) ret_u); -} -#endif - -static inline int safe_atou32(const char *s, uint32_t *ret_u) { - assert_cc(sizeof(uint32_t) == sizeof(unsigned)); - return safe_atou(s, (unsigned*) ret_u); -} - -static inline int safe_atoi32(const char *s, int32_t *ret_i) { - assert_cc(sizeof(int32_t) == sizeof(int)); - return safe_atoi(s, (int*) ret_i); -} - -static inline int safe_atou64(const char *s, uint64_t *ret_u) { - assert_cc(sizeof(uint64_t) == sizeof(unsigned long long)); - return safe_atollu(s, (unsigned long long*) ret_u); -} - -static inline int safe_atoi64(const char *s, int64_t *ret_i) { - assert_cc(sizeof(int64_t) == sizeof(long long int)); - return safe_atolli(s, (long long int*) ret_i); -} - -char *split(const char *c, size_t *l, const char *separator, char **state); -char *split_quoted(const char *c, size_t *l, char **state); - -#define FOREACH_WORD(word, length, s, state) \ - for ((state) = NULL, (word) = split((s), &(length), WHITESPACE, &(state)); (word); (word) = split((s), &(length), WHITESPACE, &(state))) - -#define FOREACH_WORD_SEPARATOR(word, length, s, separator, state) \ - for ((state) = NULL, (word) = split((s), &(length), (separator), &(state)); (word); (word) = split((s), &(length), (separator), &(state))) - -#define FOREACH_WORD_QUOTED(word, length, s, state) \ - for ((state) = NULL, (word) = split_quoted((s), &(length), &(state)); (word); (word) = split_quoted((s), &(length), &(state))) - -pid_t get_parent_of_pid(pid_t pid, pid_t *ppid); -int get_starttime_of_pid(pid_t pid, unsigned long long *st); - -int write_one_line_file(const char *fn, const char *line); -int write_one_line_file_atomic(const char *fn, const char *line); -int read_one_line_file(const char *fn, char **line); -int read_full_file(const char *fn, char **contents, size_t *size); - -int parse_env_file(const char *fname, const char *separator, ...) _sentinel_; -int load_env_file(const char *fname, char ***l); -int write_env_file(const char *fname, char **l); - -char *strappend(const char *s, const char *suffix); -char *strnappend(const char *s, const char *suffix, size_t length); - -char *replace_env(const char *format, char **env); -char **replace_env_argv(char **argv, char **env); - -int readlink_malloc(const char *p, char **r); -int readlink_and_make_absolute(const char *p, char **r); -int readlink_and_canonicalize(const char *p, char **r); - -int reset_all_signal_handlers(void); - -char *strstrip(char *s); -char *delete_chars(char *s, const char *bad); -char *truncate_nl(char *s); - -char *file_in_same_dir(const char *path, const char *filename); - -int rmdir_parents(const char *path, const char *stop); - -int get_process_comm(pid_t pid, char **name); -int get_process_cmdline(pid_t pid, size_t max_length, bool comm_fallback, char **line); -int get_process_exe(pid_t pid, char **name); -int get_process_uid(pid_t pid, uid_t *uid); -int get_process_gid(pid_t pid, gid_t *gid); - -char hexchar(int x); -int unhexchar(char c); -char octchar(int x); -int unoctchar(char c); -char decchar(int x); -int undecchar(char c); - -char *cescape(const char *s); -char *cunescape(const char *s); -char *cunescape_length(const char *s, size_t length); -char *cunescape_length_with_prefix(const char *s, size_t length, const char *prefix); - -char *xescape(const char *s, const char *bad); - -char *bus_path_escape(const char *s); -char *bus_path_unescape(const char *s); - -char *ascii_strlower(char *path); - -bool dirent_is_file(const struct dirent *de); -bool dirent_is_file_with_suffix(const struct dirent *de, const char *suffix); - -bool ignore_file(const char *filename); - -bool chars_intersect(const char *a, const char *b); - -char *format_timestamp(char *buf, size_t l, usec_t t); -char *format_timestamp_pretty(char *buf, size_t l, usec_t t); -char *format_timespan(char *buf, size_t l, usec_t t); - -int make_stdio(int fd); -int make_null_stdio(void); -int make_console_stdio(void); - -unsigned long long random_ull(void); - -/* For basic lookup tables with strictly enumerated entries */ -#define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \ - scope const char *name##_to_string(type i) { \ - if (i < 0 || i >= (type) ELEMENTSOF(name##_table)) \ - return NULL; \ - return name##_table[i]; \ - } \ - scope type name##_from_string(const char *s) { \ - type i; \ - assert(s); \ - for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ - if (name##_table[i] && \ - streq(name##_table[i], s)) \ - return i; \ - return (type) -1; \ - } \ - struct __useless_struct_to_allow_trailing_semicolon__ - -#define DEFINE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,) -#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP(name,type) __DEFINE_STRING_TABLE_LOOKUP(name,type,static) - -/* For string conversions where numbers are also acceptable */ -#define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \ - int name##_to_string_alloc(type i, char **str) { \ - char *s; \ - int r; \ - if (i < 0 || i > max) \ - return -ERANGE; \ - if (i < (type) ELEMENTSOF(name##_table)) { \ - s = strdup(name##_table[i]); \ - if (!s) \ - return log_oom(); \ - } else { \ - r = asprintf(&s, "%u", i); \ - if (r < 0) \ - return log_oom(); \ - } \ - *str = s; \ - return 0; \ - } \ - type name##_from_string(const char *s) { \ - type i; \ - unsigned u = 0; \ - assert(s); \ - for (i = 0; i < (type)ELEMENTSOF(name##_table); i++) \ - if (name##_table[i] && \ - streq(name##_table[i], s)) \ - return i; \ - if (safe_atou(s, &u) >= 0 && u <= max) \ - return (type) u; \ - return (type) -1; \ - } \ - struct __useless_struct_to_allow_trailing_semicolon__ - -int fd_nonblock(int fd, bool nonblock); -int fd_cloexec(int fd, bool cloexec); - -int close_all_fds(const int except[], unsigned n_except); - -bool fstype_is_network(const char *fstype); - -int chvt(int vt); - -int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl); -int ask(char *ret, const char *replies, const char *text, ...); - -int reset_terminal_fd(int fd, bool switch_to_text); -int reset_terminal(const char *name); - -int open_terminal(const char *name, int mode); -int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocstty_eperm, usec_t timeout); -int release_terminal(void); - -int flush_fd(int fd); - -int ignore_signals(int sig, ...); -int default_signals(int sig, ...); -int sigaction_many(const struct sigaction *sa, ...); - -int close_pipe(int p[]); -int fopen_temporary(const char *path, FILE **_f, char **_temp_path); - -ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); -ssize_t loop_write(int fd, const void *buf, size_t nbytes, bool do_poll); - -bool is_device_path(const char *path); - -int dir_is_empty(const char *path); - -void rename_process(const char name[8]); - -void sigset_add_many(sigset_t *ss, ...); - -bool hostname_is_set(void); - -char* gethostname_malloc(void); -char* getlogname_malloc(void); -char* getusername_malloc(void); - -int getttyname_malloc(int fd, char **r); -int getttyname_harder(int fd, char **r); - -int get_ctty_devnr(pid_t pid, dev_t *d); -int get_ctty(pid_t, dev_t *_devnr, char **r); - -int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); -int fchmod_and_fchown(int fd, mode_t mode, uid_t uid, gid_t gid); - -int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev); -int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev); -int rm_rf(const char *path, bool only_dirs, bool delete_root, bool honour_sticky); -int rm_rf_dangerous(const char *path, bool only_dirs, bool delete_root, bool honour_sticky); - -int pipe_eof(int fd); - -cpu_set_t* cpu_set_malloc(unsigned *ncpus); - -int status_vprintf(const char *status, bool ellipse, const char *format, va_list ap); -int status_printf(const char *status, bool ellipse, const char *format, ...); -int status_welcome(void); - -int fd_columns(int fd); -unsigned columns(void); -int fd_lines(int fd); -unsigned lines(void); -void columns_lines_cache_reset(int _unused_ signum); - -bool on_tty(void); - -int running_in_chroot(void); - -char *ellipsize(const char *s, size_t length, unsigned percent); -char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent); - -int touch(const char *path); - -char *unquote(const char *s, const char *quotes); -char *normalize_env_assignment(const char *s); - -int wait_for_terminate(pid_t pid, siginfo_t *status); -int wait_for_terminate_and_warn(const char *name, pid_t pid); - -_noreturn_ void freeze(void); - -bool null_or_empty(struct stat *st); -int null_or_empty_path(const char *fn); - -DIR *xopendirat(int dirfd, const char *name, int flags); - -void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t); -void dual_timestamp_deserialize(const char *value, dual_timestamp *t); - -char *fstab_node_to_udev_node(const char *p); - -bool tty_is_vc(const char *tty); -bool tty_is_vc_resolve(const char *tty); -bool tty_is_console(const char *tty); -int vtnr_from_tty(const char *tty); -const char *default_term_for_tty(const char *tty); - -int execute_command(const char *command, char *const argv[]); -void execute_directory(const char *directory, DIR *_d, char *argv[]); - -int kill_and_sigcont(pid_t pid, int sig); - -bool nulstr_contains(const char*nulstr, const char *needle); - -bool plymouth_running(void); - -bool hostname_is_valid(const char *s); -char* hostname_cleanup(char *s); - -char* strshorten(char *s, size_t l); - -int terminal_vhangup_fd(int fd); -int terminal_vhangup(const char *name); - -int vt_disallocate(const char *name); - -int copy_file(const char *from, const char *to); - -int symlink_atomic(const char *from, const char *to); - -int fchmod_umask(int fd, mode_t mode); - -bool display_is_local(const char *display); -int socket_from_display(const char *display, char **path); - -int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell); -int get_group_creds(const char **groupname, gid_t *gid); - -int in_group(const char *name); - -int glob_exists(const char *path); - -int dirent_ensure_type(DIR *d, struct dirent *de); - -int in_search_path(const char *path, char **search); -int get_files_in_directory(const char *path, char ***list); - -char *strjoin(const char *x, ...) _sentinel_; - -bool is_main_thread(void); - -bool in_charset(const char *s, const char* charset); - -int block_get_whole_disk(dev_t d, dev_t *ret); - -int file_is_priv_sticky(const char *p); - -int strdup_or_null(const char *a, char **b); - -#define NULSTR_FOREACH(i, l) \ - for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1) - -#define NULSTR_FOREACH_PAIR(i, j, l) \ - for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i)) - -int ioprio_class_to_string_alloc(int i, char **s); -int ioprio_class_from_string(const char *s); - -const char *sigchld_code_to_string(int i); -int sigchld_code_from_string(const char *s); - -int log_facility_unshifted_to_string_alloc(int i, char **s); -int log_facility_unshifted_from_string(const char *s); - -int log_level_to_string_alloc(int i, char **s); -int log_level_from_string(const char *s); - -int sched_policy_to_string_alloc(int i, char **s); -int sched_policy_from_string(const char *s); - -const char *rlimit_to_string(int i); -int rlimit_from_string(const char *s); - -int ip_tos_to_string_alloc(int i, char **s); -int ip_tos_from_string(const char *s); - -const char *signal_to_string(int i); -int signal_from_string(const char *s); - -int signal_from_string_try_harder(const char *s); - -extern int saved_argc; -extern char **saved_argv; - -bool kexec_loaded(void); - -int prot_from_flags(int flags); - -char *format_bytes(char *buf, size_t l, off_t t); - -int fd_wait_for_event(int fd, int event, usec_t timeout); - -void* memdup(const void *p, size_t l) _malloc_; - -int is_kernel_thread(pid_t pid); - -int fd_inc_sndbuf(int fd, size_t n); -int fd_inc_rcvbuf(int fd, size_t n); - -int fork_agent(pid_t *pid, const int except[], unsigned n_except, const char *path, ...); - -int setrlimit_closest(int resource, const struct rlimit *rlim); - -int getenv_for_pid(pid_t pid, const char *field, char **_value); - -int can_sleep(const char *type); -int can_sleep_disk(const char *type); - -bool is_valid_documentation_url(const char *url); - -bool in_initrd(void); - -void warn_melody(void); - -int get_shell(char **ret); -int get_home_dir(char **ret); - -void freep(void *p); -void fclosep(FILE **f); -void closep(int *fd); -void closedirp(DIR **d); -void umaskp(mode_t *u); - -_malloc_ static inline void *malloc_multiply(size_t a, size_t b) { - if (_unlikely_(b == 0 || a > ((size_t) -1) / b)) - return NULL; - - return malloc(a * b); -} - -_malloc_ static inline void *memdup_multiply(const void *p, size_t a, size_t b) { - if (_unlikely_(b == 0 || a > ((size_t) -1) / b)) - return NULL; - - return memdup(p, a * b); -} - -bool filename_is_safe(const char *p); -bool string_is_safe(const char *p); - -int parse_timestamp(const char *t, usec_t *usec); - -void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size, - int (*compar) (const void *, const void *, void *), - void *arg); - -bool is_locale_utf8(void); - -typedef enum DrawSpecialChar { - DRAW_TREE_VERT, - DRAW_TREE_BRANCH, - DRAW_TREE_RIGHT, - DRAW_TRIANGULAR_BULLET, - _DRAW_SPECIAL_CHAR_MAX -} DrawSpecialChar; -const char *draw_special_char(DrawSpecialChar ch); - -char *strreplace(const char *text, const char *old_string, const char *new_string); 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