diff options
Diffstat (limited to 'src')
| l--------- | src/tmpfiles/Makefile | 1 | ||||
| -rw-r--r-- | src/tmpfiles/tmpfiles.c | 2180 |
2 files changed, 0 insertions, 2181 deletions
diff --git a/src/tmpfiles/Makefile b/src/tmpfiles/Makefile deleted file mode 120000 index d0b0e8e008..0000000000 --- a/src/tmpfiles/Makefile +++ /dev/null @@ -1 +0,0 @@ -../Makefile
\ No newline at end of file diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c deleted file mode 100644 index 494fd1ac21..0000000000 --- a/src/tmpfiles/tmpfiles.c +++ /dev/null @@ -1,2180 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering, Kay Sievers - Copyright 2015 Zbigniew Jędrzejewski-Szmek - - 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 <unistd.h> -#include <fcntl.h> -#include <errno.h> -#include <string.h> -#include <limits.h> -#include <dirent.h> -#include <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <getopt.h> -#include <stdbool.h> -#include <time.h> -#include <glob.h> -#include <fnmatch.h> -#include <sys/stat.h> -#include <sys/xattr.h> -#include <linux/fs.h> - -#include "log.h" -#include "util.h" -#include "macro.h" -#include "missing.h" -#include "mkdir.h" -#include "path-util.h" -#include "strv.h" -#include "label.h" -#include "set.h" -#include "conf-files.h" -#include "capability.h" -#include "specifier.h" -#include "build.h" -#include "copy.h" -#include "selinux-util.h" -#include "btrfs-util.h" -#include "acl-util.h" - -/* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates - * them in the file system. This is intended to be used to create - * properly owned directories beneath /tmp, /var/tmp, /run, which are - * volatile and hence need to be recreated on bootup. */ - -typedef enum ItemType { - /* These ones take file names */ - CREATE_FILE = 'f', - TRUNCATE_FILE = 'F', - CREATE_DIRECTORY = 'd', - TRUNCATE_DIRECTORY = 'D', - CREATE_SUBVOLUME = 'v', - CREATE_FIFO = 'p', - CREATE_SYMLINK = 'L', - CREATE_CHAR_DEVICE = 'c', - CREATE_BLOCK_DEVICE = 'b', - COPY_FILES = 'C', - - /* These ones take globs */ - SET_XATTR = 't', - RECURSIVE_SET_XATTR = 'T', - SET_ACL = 'a', - RECURSIVE_SET_ACL = 'A', - WRITE_FILE = 'w', - IGNORE_PATH = 'x', - IGNORE_DIRECTORY_PATH = 'X', - REMOVE_PATH = 'r', - RECURSIVE_REMOVE_PATH = 'R', - ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */ - RELABEL_PATH = 'z', - RECURSIVE_RELABEL_PATH = 'Z', - SET_ATTRIB = 'h', - RECURSIVE_SET_ATTRIB = 'H', -} ItemType; - -typedef struct Item { - ItemType type; - - char *path; - char *argument; - char **xattrs; -#ifdef HAVE_ACL - acl_t acl_access; - acl_t acl_default; -#endif - uid_t uid; - gid_t gid; - mode_t mode; - usec_t age; - - dev_t major_minor; - unsigned long attrib_value; - unsigned long attrib_mask; - - bool uid_set:1; - bool gid_set:1; - bool mode_set:1; - bool age_set:1; - bool mask_perms:1; - bool attrib_set:1; - - bool keep_first_level:1; - - bool force:1; - - bool done:1; -} Item; - -typedef struct ItemArray { - Item *items; - size_t count; - size_t size; -} ItemArray; - -static bool arg_create = false; -static bool arg_clean = false; -static bool arg_remove = false; -static bool arg_boot = false; - -static char **arg_include_prefixes = NULL; -static char **arg_exclude_prefixes = NULL; -static char *arg_root = NULL; - -static const char conf_file_dirs[] = CONF_DIRS_NULSTR("tmpfiles"); - -#define MAX_DEPTH 256 - -static Hashmap *items = NULL, *globs = NULL; -static Set *unix_sockets = NULL; - -static bool needs_glob(ItemType t) { - return IN_SET(t, - WRITE_FILE, - IGNORE_PATH, - IGNORE_DIRECTORY_PATH, - REMOVE_PATH, - RECURSIVE_REMOVE_PATH, - ADJUST_MODE, - RELABEL_PATH, - RECURSIVE_RELABEL_PATH, - SET_XATTR, - RECURSIVE_SET_XATTR, - SET_ACL, - RECURSIVE_SET_ACL); -} - -static bool takes_ownership(ItemType t) { - return IN_SET(t, - CREATE_FILE, - TRUNCATE_FILE, - CREATE_DIRECTORY, - TRUNCATE_DIRECTORY, - CREATE_SUBVOLUME, - CREATE_FIFO, - CREATE_SYMLINK, - CREATE_CHAR_DEVICE, - CREATE_BLOCK_DEVICE, - COPY_FILES, - WRITE_FILE, - IGNORE_PATH, - IGNORE_DIRECTORY_PATH, - REMOVE_PATH, - RECURSIVE_REMOVE_PATH); -} - -static struct Item* find_glob(Hashmap *h, const char *match) { - ItemArray *j; - Iterator i; - - HASHMAP_FOREACH(j, h, i) { - unsigned n; - - for (n = 0; n < j->count; n++) { - Item *item = j->items + n; - - if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0) - return item; - } - } - - return NULL; -} - -static void load_unix_sockets(void) { - _cleanup_fclose_ FILE *f = NULL; - char line[LINE_MAX]; - - if (unix_sockets) - return; - - /* We maintain a cache of the sockets we found in - * /proc/net/unix to speed things up a little. */ - - unix_sockets = set_new(&string_hash_ops); - if (!unix_sockets) - return; - - f = fopen("/proc/net/unix", "re"); - if (!f) - return; - - /* Skip header */ - if (!fgets(line, sizeof(line), f)) - goto fail; - - for (;;) { - char *p, *s; - int k; - - if (!fgets(line, sizeof(line), f)) - break; - - truncate_nl(line); - - p = strchr(line, ':'); - if (!p) - continue; - - if (strlen(p) < 37) - continue; - - p += 37; - p += strspn(p, WHITESPACE); - p += strcspn(p, WHITESPACE); /* skip one more word */ - p += strspn(p, WHITESPACE); - - if (*p != '/') - continue; - - s = strdup(p); - if (!s) - goto fail; - - path_kill_slashes(s); - - k = set_consume(unix_sockets, s); - if (k < 0 && k != -EEXIST) - goto fail; - } - - return; - -fail: - set_free_free(unix_sockets); - unix_sockets = NULL; -} - -static bool unix_socket_alive(const char *fn) { - assert(fn); - - load_unix_sockets(); - - if (unix_sockets) - return !!set_get(unix_sockets, (char*) fn); - - /* We don't know, so assume yes */ - return true; -} - -static int dir_is_mount_point(DIR *d, const char *subdir) { - - union file_handle_union h = FILE_HANDLE_INIT; - int mount_id_parent, mount_id; - int r_p, r; - - r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0); - if (r_p < 0) - r_p = -errno; - - h.handle.handle_bytes = MAX_HANDLE_SZ; - r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0); - if (r < 0) - r = -errno; - - /* got no handle; make no assumptions, return error */ - if (r_p < 0 && r < 0) - return r_p; - - /* got both handles; if they differ, it is a mount point */ - if (r_p >= 0 && r >= 0) - return mount_id_parent != mount_id; - - /* got only one handle; assume different mount points if one - * of both queries was not supported by the filesystem */ - if (r_p == -ENOSYS || r_p == -EOPNOTSUPP || r == -ENOSYS || r == -EOPNOTSUPP) - return true; - - /* return error */ - if (r_p < 0) - return r_p; - return r; -} - -static DIR* xopendirat_nomod(int dirfd, const char *path) { - DIR *dir; - - dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME); - if (dir) - return dir; - - log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); - if (errno != EPERM) - return NULL; - - dir = xopendirat(dirfd, path, O_NOFOLLOW); - if (!dir) - log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path); - - return dir; -} - -static DIR* opendir_nomod(const char *path) { - return xopendirat_nomod(AT_FDCWD, path); -} - -static int dir_cleanup( - Item *i, - const char *p, - DIR *d, - const struct stat *ds, - usec_t cutoff, - dev_t rootdev, - bool mountpoint, - int maxdepth, - bool keep_this_level) { - - struct dirent *dent; - struct timespec times[2]; - bool deleted = false; - int r = 0; - - while ((dent = readdir(d))) { - struct stat s; - usec_t age; - _cleanup_free_ char *sub_path = NULL; - - if (STR_IN_SET(dent->d_name, ".", "..")) - continue; - - if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) { - if (errno == ENOENT) - continue; - - /* FUSE, NFS mounts, SELinux might return EACCES */ - if (errno == EACCES) - log_debug_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name); - else - log_error_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name); - r = -errno; - continue; - } - - /* Stay on the same filesystem */ - if (s.st_dev != rootdev) { - log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name); - continue; - } - - /* Try to detect bind mounts of the same filesystem instance; they - * do not differ in device major/minors. This type of query is not - * supported on all kernels or filesystem types though. */ - if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) { - log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.", - p, dent->d_name); - continue; - } - - /* Do not delete read-only files owned by root */ - if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) { - log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p, dent->d_name); - continue; - } - - sub_path = strjoin(p, "/", dent->d_name, NULL); - if (!sub_path) { - r = log_oom(); - goto finish; - } - - /* Is there an item configured for this path? */ - if (hashmap_get(items, sub_path)) { - log_debug("Ignoring \"%s\": a separate entry exists.", sub_path); - continue; - } - - if (find_glob(globs, sub_path)) { - log_debug("Ignoring \"%s\": a separate glob exists.", sub_path); - continue; - } - - if (S_ISDIR(s.st_mode)) { - - if (mountpoint && - streq(dent->d_name, "lost+found") && - s.st_uid == 0) { - log_debug("Ignoring \"%s\".", sub_path); - continue; - } - - if (maxdepth <= 0) - log_warning("Reached max depth on \"%s\".", sub_path); - else { - _cleanup_closedir_ DIR *sub_dir; - int q; - - sub_dir = xopendirat_nomod(dirfd(d), dent->d_name); - if (!sub_dir) { - if (errno != ENOENT) - r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path); - - continue; - } - - q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false); - if (q < 0) - r = q; - } - - /* Note: if you are wondering why we don't - * support the sticky bit for excluding - * directories from cleaning like we do it for - * other file system objects: well, the sticky - * bit already has a meaning for directories, - * so we don't want to overload that. */ - - if (keep_this_level) { - log_debug("Keeping \"%s\".", sub_path); - continue; - } - - /* Ignore ctime, we change it when deleting */ - age = timespec_load(&s.st_mtim); - if (age >= cutoff) { - char a[FORMAT_TIMESTAMP_MAX]; - /* Follows spelling in stat(1). */ - log_debug("Directory \"%s\": modify time %s is too new.", - sub_path, - format_timestamp_us(a, sizeof(a), age)); - continue; - } - - age = timespec_load(&s.st_atim); - if (age >= cutoff) { - char a[FORMAT_TIMESTAMP_MAX]; - log_debug("Directory \"%s\": access time %s is too new.", - sub_path, - format_timestamp_us(a, sizeof(a), age)); - continue; - } - - log_debug("Removing directory \"%s\".", sub_path); - if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) - if (errno != ENOENT && errno != ENOTEMPTY) { - log_error_errno(errno, "rmdir(%s): %m", sub_path); - r = -errno; - } - - } else { - /* Skip files for which the sticky bit is - * set. These are semantics we define, and are - * unknown elsewhere. See XDG_RUNTIME_DIR - * specification for details. */ - if (s.st_mode & S_ISVTX) { - log_debug("Skipping \"%s\": sticky bit set.", sub_path); - continue; - } - - if (mountpoint && S_ISREG(s.st_mode)) - if ((streq(dent->d_name, ".journal") && s.st_uid == 0) || - streq(dent->d_name, "aquota.user") || - streq(dent->d_name, "aquota.group")) { - log_debug("Skipping \"%s\".", sub_path); - continue; - } - - /* Ignore sockets that are listed in /proc/net/unix */ - if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) { - log_debug("Skipping \"%s\": live socket.", sub_path); - continue; - } - - /* Ignore device nodes */ - if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) { - log_debug("Skipping \"%s\": a device.", sub_path); - continue; - } - - /* Keep files on this level around if this is - * requested */ - if (keep_this_level) { - log_debug("Keeping \"%s\".", sub_path); - continue; - } - - age = timespec_load(&s.st_mtim); - if (age >= cutoff) { - char a[FORMAT_TIMESTAMP_MAX]; - /* Follows spelling in stat(1). */ - log_debug("File \"%s\": modify time %s is too new.", - sub_path, - format_timestamp_us(a, sizeof(a), age)); - continue; - } - - age = timespec_load(&s.st_atim); - if (age >= cutoff) { - char a[FORMAT_TIMESTAMP_MAX]; - log_debug("File \"%s\": access time %s is too new.", - sub_path, - format_timestamp_us(a, sizeof(a), age)); - continue; - } - - age = timespec_load(&s.st_ctim); - if (age >= cutoff) { - char a[FORMAT_TIMESTAMP_MAX]; - log_debug("File \"%s\": change time %s is too new.", - sub_path, - format_timestamp_us(a, sizeof(a), age)); - continue; - } - - log_debug("unlink \"%s\"", sub_path); - - if (unlinkat(dirfd(d), dent->d_name, 0) < 0) - if (errno != ENOENT) - r = log_error_errno(errno, "unlink(%s): %m", sub_path); - - deleted = true; - } - } - -finish: - if (deleted) { - usec_t age1, age2; - char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; - - /* Restore original directory timestamps */ - times[0] = ds->st_atim; - times[1] = ds->st_mtim; - - age1 = timespec_load(&ds->st_atim); - age2 = timespec_load(&ds->st_mtim); - log_debug("Restoring access and modification time on \"%s\": %s, %s", - p, - format_timestamp_us(a, sizeof(a), age1), - format_timestamp_us(b, sizeof(b), age2)); - if (futimens(dirfd(d), times) < 0) - log_error_errno(errno, "utimensat(%s): %m", p); - } - - return r; -} - -static int path_set_perms(Item *i, const char *path) { - struct stat st; - bool st_valid; - - assert(i); - assert(path); - - st_valid = stat(path, &st) == 0; - - /* not using i->path directly because it may be a glob */ - if (i->mode_set) { - mode_t m = i->mode; - - if (i->mask_perms && st_valid) { - if (!(st.st_mode & 0111)) - m &= ~0111; - if (!(st.st_mode & 0222)) - m &= ~0222; - if (!(st.st_mode & 0444)) - m &= ~0444; - if (!S_ISDIR(st.st_mode)) - m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */ - } - - if (st_valid && m == (st.st_mode & 07777)) - log_debug("\"%s\" has right mode %o", path, st.st_mode); - else { - log_debug("chmod \"%s\" to mode %o", path, m); - if (chmod(path, m) < 0) - return log_error_errno(errno, "chmod(%s) failed: %m", path); - } - } - - if ((!st_valid || i->uid != st.st_uid || i->gid != st.st_gid) && - (i->uid_set || i->gid_set)) { - log_debug("chown \"%s\" to "UID_FMT"."GID_FMT, - path, - i->uid_set ? i->uid : UID_INVALID, - i->gid_set ? i->gid : GID_INVALID); - if (chown(path, - i->uid_set ? i->uid : UID_INVALID, - i->gid_set ? i->gid : GID_INVALID) < 0) - - return log_error_errno(errno, "chown(%s) failed: %m", path); - } - - return label_fix(path, false, false); -} - -static int get_xattrs_from_arg(Item *i) { - const char *p; - int r; - - assert(i); - assert(i->argument); - - p = i->argument; - - for (;;) { - _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL; - - r = unquote_first_word(&p, &xattr, UNQUOTE_CUNESCAPE); - if (r < 0) - log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", p); - if (r <= 0) - break; - - r = split_pair(xattr, "=", &name, &value); - if (r < 0) { - log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr); - continue; - } - - if (isempty(name) || isempty(value)) { - log_warning("Malformed xattr found, ignoring: %s", xattr); - continue; - } - - if (strv_push_pair(&i->xattrs, name, value) < 0) - return log_oom(); - - name = value = NULL; - } - - return 0; -} - -static int path_set_xattrs(Item *i, const char *path) { - char **name, **value; - - assert(i); - assert(path); - - STRV_FOREACH_PAIR(name, value, i->xattrs) { - int n; - - n = strlen(*value); - log_debug("\"%s\": setting xattr \"%s=%s\"", path, *name, *value); - if (lsetxattr(path, *name, *value, n, 0) < 0) { - log_error("Setting extended attribute %s=%s on %s failed: %m", - *name, *value, path); - return -errno; - } - } - return 0; -} - -static int get_acls_from_arg(Item *item) { -#ifdef HAVE_ACL - int r; - - assert(item); - - /* If force (= modify) is set, we will not modify the acl - * afterwards, so the mask can be added now if necessary. */ - r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force); - if (r < 0) - log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument); -#else - log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring"); -#endif - - return 0; -} - -#ifdef HAVE_ACL -static int path_set_acl(const char *path, acl_type_t type, acl_t acl, bool modify) { - _cleanup_(acl_freep) acl_t dup = NULL; - int r; - _cleanup_(acl_free_charpp) char *t = NULL; - - /* Returns 0 for success, positive error if already warned, - * negative error otherwise. */ - - if (modify) { - r = acls_for_file(path, type, acl, &dup); - if (r < 0) - return r; - - r = calc_acl_mask_if_needed(&dup); - if (r < 0) - return r; - } else { - dup = acl_dup(acl); - if (!dup) - return -errno; - - /* the mask was already added earlier if needed */ - } - - r = add_base_acls_if_needed(&dup, path); - if (r < 0) - return r; - - t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE); - log_debug("\"%s\": setting %s ACL \"%s\"", path, - type == ACL_TYPE_ACCESS ? "access" : "default", - strna(t)); - - r = acl_set_file(path, type, dup); - if (r < 0) - return -log_error_errno(errno, - "Setting %s ACL \"%s\" on %s failed: %m", - type == ACL_TYPE_ACCESS ? "access" : "default", - strna(t), path); - - return 0; -} -#endif - -static int path_set_acls(Item *item, const char *path) { - int r = 0; -#ifdef HAVE_ACL - assert(item); - assert(path); - - if (item->acl_access) - r = path_set_acl(path, ACL_TYPE_ACCESS, item->acl_access, item->force); - - if (r == 0 && item->acl_default) - r = path_set_acl(path, ACL_TYPE_DEFAULT, item->acl_default, item->force); - - if (r > 0) - return -r; /* already warned */ - else if (r == -EOPNOTSUPP) { - log_debug_errno(r, "ACLs not supported by file system at %s", path); - return 0; - } else if (r < 0) - log_error_errno(r, "ACL operation on \"%s\" failed: %m", path); -#endif - return r; -} - -#define ALL_ATTRIBS \ - FS_NOATIME_FL | \ - FS_SYNC_FL | \ - FS_DIRSYNC_FL | \ - FS_APPEND_FL | \ - FS_COMPR_FL | \ - FS_NODUMP_FL | \ - FS_EXTENT_FL | \ - FS_IMMUTABLE_FL | \ - FS_JOURNAL_DATA_FL | \ - FS_SECRM_FL | \ - FS_UNRM_FL | \ - FS_NOTAIL_FL | \ - FS_TOPDIR_FL | \ - FS_NOCOW_FL - -static int get_attrib_from_arg(Item *item) { - static const unsigned attributes[] = { - [(uint8_t)'A'] = FS_NOATIME_FL, /* do not update atime */ - [(uint8_t)'S'] = FS_SYNC_FL, /* Synchronous updates */ - [(uint8_t)'D'] = FS_DIRSYNC_FL, /* dirsync behaviour (directories only) */ - [(uint8_t)'a'] = FS_APPEND_FL, /* writes to file may only append */ - [(uint8_t)'c'] = FS_COMPR_FL, /* Compress file */ - [(uint8_t)'d'] = FS_NODUMP_FL, /* do not dump file */ - [(uint8_t)'e'] = FS_EXTENT_FL, /* Top of directory hierarchies*/ - [(uint8_t)'i'] = FS_IMMUTABLE_FL, /* Immutable file */ - [(uint8_t)'j'] = FS_JOURNAL_DATA_FL, /* Reserved for ext3 */ - [(uint8_t)'s'] = FS_SECRM_FL, /* Secure deletion */ - [(uint8_t)'u'] = FS_UNRM_FL, /* Undelete */ - [(uint8_t)'t'] = FS_NOTAIL_FL, /* file tail should not be merged */ - [(uint8_t)'T'] = FS_TOPDIR_FL, /* Top of directory hierarchies*/ - [(uint8_t)'C'] = FS_NOCOW_FL, /* Do not cow file */ - }; - char *p = item->argument; - enum { - MODE_ADD, - MODE_DEL, - MODE_SET - } mode = MODE_ADD; - unsigned long value = 0, mask = 0; - - if (!p) { - log_error("\"%s\": setting ATTR need an argument", item->path); - return -EINVAL; - } - - if (*p == '+') { - mode = MODE_ADD; - p++; - } else if (*p == '-') { - mode = MODE_DEL; - p++; - } else if (*p == '=') { - mode = MODE_SET; - p++; - } - - if (!*p && mode != MODE_SET) { - log_error("\"%s\": setting ATTR: argument is empty", item->path); - return -EINVAL; - } - for (; *p ; p++) { - if ((uint8_t)*p >= ELEMENTSOF(attributes) || attributes[(uint8_t)*p] == 0) { - log_error("\"%s\": setting ATTR: unknown attr '%c'", item->path, *p); - return -EINVAL; - } - if (mode == MODE_ADD || mode == MODE_SET) - value |= attributes[(uint8_t)*p]; - else - value &= ~attributes[(uint8_t)*p]; - mask |= attributes[(uint8_t)*p]; - } - - if (mode == MODE_SET) - mask |= ALL_ATTRIBS; - - assert(mask); - - item->attrib_mask = mask; - item->attrib_value = value; - item->attrib_set = true; - - return 0; - -} - -static int path_set_attrib(Item *item, const char *path) { - _cleanup_close_ int fd = -1; - int r; - unsigned f; - struct stat st; - - /* do nothing */ - if (item->attrib_mask == 0 || !item->attrib_set) - return 0; - /* - * It is OK to ignore an lstat() error, because the error - * will be catch by the open() below anyway - */ - if (lstat(path, &st) == 0 && - !S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) { - return 0; - } - - fd = open(path, O_RDONLY|O_NONBLOCK|O_CLOEXEC); - - if (fd < 0) - return log_error_errno(errno, "Cannot open \"%s\": %m", path); - - f = item->attrib_value & item->attrib_mask; - if (!S_ISDIR(st.st_mode)) - f &= ~FS_DIRSYNC_FL; - r = change_attr_fd(fd, f, item->attrib_mask); - if (r < 0) - return log_error_errno(errno, - "Cannot set attrib for \"%s\", value=0x%08lx, mask=0x%08lx: %m", - path, item->attrib_value, item->attrib_mask); - - return 0; -} - -static int write_one_file(Item *i, const char *path) { - _cleanup_close_ int fd = -1; - int flags, r = 0; - struct stat st; - - assert(i); - assert(path); - - flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW : - i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0; - - RUN_WITH_UMASK(0000) { - mac_selinux_create_file_prepare(path, S_IFREG); - fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode); - mac_selinux_create_file_clear(); - } - - if (fd < 0) { - if (i->type == WRITE_FILE && errno == ENOENT) { - log_debug_errno(errno, "Not writing \"%s\": %m", path); - return 0; - } - - log_error_errno(errno, "Failed to create file %s: %m", path); - return -errno; - } - - if (i->argument) { - _cleanup_free_ char *unescaped; - - log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path); - - unescaped = cunescape(i->argument); - if (!unescaped) - return log_oom(); - - r = loop_write(fd, unescaped, strlen(unescaped), false); - if (r < 0) - return log_error_errno(r, "Failed to write file \"%s\": %m", path); - } else - log_debug("\"%s\" has been created.", path); - - fd = safe_close(fd); - - if (stat(path, &st) < 0) - return log_error_errno(errno, "stat(%s) failed: %m", path); - - if (!S_ISREG(st.st_mode)) { - log_error("%s is not a file.", path); - return -EEXIST; - } - - r = path_set_perms(i, path); - if (r < 0) - return r; - - return 0; -} - -typedef int (*action_t)(Item *, const char *); - -static int item_do_children(Item *i, const char *path, action_t action) { - _cleanup_closedir_ DIR *d; - int r = 0; - - assert(i); - assert(path); - - /* This returns the first error we run into, but nevertheless - * tries to go on */ - - d = opendir_nomod(path); - if (!d) - return errno == ENOENT || errno == ENOTDIR ? 0 : -errno; - - for (;;) { - _cleanup_free_ char *p = NULL; - struct dirent *de; - int q; - - errno = 0; - de = readdir(d); - if (!de) { - if (errno != 0 && r == 0) - r = -errno; - - break; - } - - if (STR_IN_SET(de->d_name, ".", "..")) - continue; - - p = strjoin(path, "/", de->d_name, NULL); - if (!p) - return -ENOMEM; - - q = action(i, p); - if (q < 0 && q != -ENOENT && r == 0) - r = q; - - if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) { - q = item_do_children(i, p, action); - if (q < 0 && r == 0) - r = q; - } - } - - return r; -} - -static int glob_item(Item *i, action_t action, bool recursive) { - _cleanup_globfree_ glob_t g = { - .gl_closedir = (void (*)(void *)) closedir, - .gl_readdir = (struct dirent *(*)(void *)) readdir, - .gl_opendir = (void *(*)(const char *)) opendir_nomod, - .gl_lstat = lstat, - .gl_stat = stat, - }; - int r = 0, k; - char **fn; - - errno = 0; - k = glob(i->path, GLOB_NOSORT|GLOB_BRACE|GLOB_ALTDIRFUNC, NULL, &g); - if (k != 0 && k != GLOB_NOMATCH) - return log_error_errno(errno ?: EIO, "glob(%s) failed: %m", i->path); - - STRV_FOREACH(fn, g.gl_pathv) { - k = action(i, *fn); - if (k < 0 && r == 0) - r = k; - - if (recursive) { - k = item_do_children(i, *fn, action); - if (k < 0 && r == 0) - r = k; - } - } - - return r; -} - -typedef enum { - CREATION_NORMAL, - CREATION_EXISTING, - CREATION_FORCE, - _CREATION_MODE_MAX, - _CREATION_MODE_INVALID = -1 -} CreationMode; - -static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = { - [CREATION_NORMAL] = "Created", - [CREATION_EXISTING] = "Found existing", - [CREATION_FORCE] = "Created replacement", -}; - -DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode); - -static int create_item(Item *i) { - struct stat st; - int r = 0; - CreationMode creation; - - assert(i); - - log_debug("Running create action for entry %c %s", (char) i->type, i->path); - - switch (i->type) { - - case IGNORE_PATH: - case IGNORE_DIRECTORY_PATH: - case REMOVE_PATH: - case RECURSIVE_REMOVE_PATH: - return 0; - - case CREATE_FILE: - case TRUNCATE_FILE: - r = write_one_file(i, i->path); - if (r < 0) - return r; - break; - - case COPY_FILES: - log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path); - r = copy_tree(i->argument, i->path, false); - if (r < 0) { - struct stat a, b; - - if (r != -EEXIST) - return log_error_errno(r, "Failed to copy files to %s: %m", i->path); - - if (stat(i->argument, &a) < 0) - return log_error_errno(errno, "stat(%s) failed: %m", i->argument); - - if (stat(i->path, &b) < 0) - return log_error_errno(errno, "stat(%s) failed: %m", i->path); - - if ((a.st_mode ^ b.st_mode) & S_IFMT) { - log_debug("Can't copy to %s, file exists already and is of different type", i->path); - return 0; - } - } - - r = path_set_perms(i, i->path); - if (r < 0) - return r; - - break; - - case WRITE_FILE: - r = glob_item(i, write_one_file, false); - if (r < 0) - return r; - - break; - - case CREATE_DIRECTORY: - case TRUNCATE_DIRECTORY: - case CREATE_SUBVOLUME: - - RUN_WITH_UMASK(0000) - mkdir_parents_label(i->path, 0755); - - if (i->type == CREATE_SUBVOLUME) - RUN_WITH_UMASK((~i->mode) & 0777) { - r = btrfs_subvol_make(i->path); - log_debug_errno(r, "Creating subvolume \"%s\": %m", i->path); - } - else - r = 0; - - if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY) - RUN_WITH_UMASK(0000) - r = mkdir_label(i->path, i->mode); - - if (r < 0) { - if (r != -EEXIST) - return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path); - - if (stat(i->path, &st) < 0) - return log_error_errno(errno, "stat(%s) failed: %m", i->path); - - if (!S_ISDIR(st.st_mode)) { - log_debug("\"%s\" already exists and is not a directory.", i->path); - return 0; - } - - creation = CREATION_EXISTING; - } else - creation = CREATION_NORMAL; - log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path); - - r = path_set_perms(i, i->path); - if (r < 0) - return r; - - break; - - case CREATE_FIFO: - - RUN_WITH_UMASK(0000) { - mac_selinux_create_file_prepare(i->path, S_IFIFO); - r = mkfifo(i->path, i->mode); - mac_selinux_create_file_clear(); - } - - if (r < 0) { - if (errno != EEXIST) - return log_error_errno(errno, "Failed to create fifo %s: %m", i->path); - - if (stat(i->path, &st) < 0) - return log_error_errno(errno, "stat(%s) failed: %m", i->path); - - if (!S_ISFIFO(st.st_mode)) { - - if (i->force) { - - RUN_WITH_UMASK(0000) { - mac_selinux_create_file_prepare(i->path, S_IFIFO); - r = mkfifo_atomic(i->path, i->mode); - mac_selinux_create_file_clear(); - } - - if (r < 0) - return log_error_errno(r, "Failed to create fifo %s: %m", i->path); - creation = CREATION_FORCE; - } else { - log_debug("%s is not a fifo.", i->path); - return 0; - } - } else - creation = CREATION_EXISTING; - } else - creation = CREATION_NORMAL; - log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path); - - r = path_set_perms(i, i->path); - if (r < 0) - return r; - - break; - - case CREATE_SYMLINK: - - mac_selinux_create_file_prepare(i->path, S_IFLNK); - r = symlink(i->argument, i->path); - mac_selinux_create_file_clear(); - - if (r < 0) { - _cleanup_free_ char *x = NULL; - - if (errno != EEXIST) - return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path); - - r = readlink_malloc(i->path, &x); - if (r < 0 || !streq(i->argument, x)) { - - if (i->force) { - mac_selinux_create_file_prepare(i->path, S_IFLNK); - r = symlink_atomic(i->argument, i->path); - mac_selinux_create_file_clear(); - - if (r < 0) - return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path); - creation = CREATION_FORCE; - } else { - log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path); - return 0; - } - } else - creation = CREATION_EXISTING; - } else - creation = CREATION_NORMAL; - log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path); - - break; - - case CREATE_BLOCK_DEVICE: - case CREATE_CHAR_DEVICE: { - mode_t file_type; - - if (have_effective_cap(CAP_MKNOD) == 0) { - /* In a container we lack CAP_MKNOD. We - shouldn't attempt to create the device node in - that case to avoid noise, and we don't support - virtualized devices in containers anyway. */ - - log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path); - return 0; - } - - file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR; - - RUN_WITH_UMASK(0000) { - mac_selinux_create_file_prepare(i->path, file_type); - r = mknod(i->path, i->mode | file_type, i->major_minor); - mac_selinux_create_file_clear(); - } - - if (r < 0) { - if (errno == EPERM) { - log_debug("We lack permissions, possibly because of cgroup configuration; " - "skipping creation of device node %s.", i->path); - return 0; - } - - if (errno != EEXIST) - return log_error_errno(errno, "Failed to create device node %s: %m", i->path); - - if (stat(i->path, &st) < 0) - return log_error_errno(errno, "stat(%s) failed: %m", i->path); - - if ((st.st_mode & S_IFMT) != file_type) { - - if (i->force) { - - RUN_WITH_UMASK(0000) { - mac_selinux_create_file_prepare(i->path, file_type); - r = mknod_atomic(i->path, i->mode | file_type, i->major_minor); - mac_selinux_create_file_clear(); - } - - if (r < 0) - return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path); - creation = CREATION_FORCE; - } else { - log_debug("%s is not a device node.", i->path); - return 0; - } - } else - creation = CREATION_EXISTING; - } else - creation = CREATION_NORMAL; - log_debug("%s %s device node \"%s\" %u:%u.", - creation_mode_verb_to_string(creation), - i->type == CREATE_BLOCK_DEVICE ? "block" : "char", - i->path, major(i->mode), minor(i->mode)); - - r = path_set_perms(i, i->path); - if (r < 0) - return r; - - break; - } - - case ADJUST_MODE: - case RELABEL_PATH: - r = glob_item(i, path_set_perms, false); - if (r < 0) - return r; - break; - - case RECURSIVE_RELABEL_PATH: - r = glob_item(i, path_set_perms, true); - if (r < 0) - return r; - break; - - case SET_XATTR: - r = glob_item(i, path_set_xattrs, false); - if (r < 0) - return r; - break; - - case RECURSIVE_SET_XATTR: - r = glob_item(i, path_set_xattrs, true); - if (r < 0) - return r; - break; - - case SET_ACL: - r = glob_item(i, path_set_acls, false); - if (r < 0) - return r; - break; - - case RECURSIVE_SET_ACL: - r = glob_item(i, path_set_acls, true); - if (r < 0) - return r; - break; - - case SET_ATTRIB: - r = glob_item(i, path_set_attrib, false); - if (r < 0) - return r; - break; - - case RECURSIVE_SET_ATTRIB: - r = glob_item(i, path_set_attrib, true); - if (r < 0) - return r; - break; - } - - return 0; -} - -static int remove_item_instance(Item *i, const char *instance) { - int r; - - assert(i); - - switch (i->type) { - - case REMOVE_PATH: - if (remove(instance) < 0 && errno != ENOENT) - return log_error_errno(errno, "rm(%s): %m", instance); - - break; - - case TRUNCATE_DIRECTORY: - case RECURSIVE_REMOVE_PATH: - /* FIXME: we probably should use dir_cleanup() here - * instead of rm_rf() so that 'x' is honoured. */ - log_debug("rm -rf \"%s\"", instance); - r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false); - if (r < 0 && r != -ENOENT) - return log_error_errno(r, "rm_rf(%s): %m", instance); - - break; - - default: - assert_not_reached("wut?"); - } - - return 0; -} - -static int remove_item(Item *i) { - int r = 0; - - assert(i); - - log_debug("Running remove action for entry %c %s", (char) i->type, i->path); - - switch (i->type) { - - case CREATE_FILE: - case TRUNCATE_FILE: - case CREATE_DIRECTORY: - case CREATE_SUBVOLUME: - case CREATE_FIFO: - case CREATE_SYMLINK: - case CREATE_CHAR_DEVICE: - case CREATE_BLOCK_DEVICE: - case IGNORE_PATH: - case IGNORE_DIRECTORY_PATH: - case ADJUST_MODE: - case RELABEL_PATH: - case RECURSIVE_RELABEL_PATH: - case WRITE_FILE: - case COPY_FILES: - case SET_XATTR: - case RECURSIVE_SET_XATTR: - case SET_ACL: - case RECURSIVE_SET_ACL: - case SET_ATTRIB: - case RECURSIVE_SET_ATTRIB: - break; - - case REMOVE_PATH: - case TRUNCATE_DIRECTORY: - case RECURSIVE_REMOVE_PATH: - r = glob_item(i, remove_item_instance, false); - break; - } - - return r; -} - -static int clean_item_instance(Item *i, const char* instance) { - _cleanup_closedir_ DIR *d = NULL; - struct stat s, ps; - bool mountpoint; - usec_t cutoff, n; - char timestamp[FORMAT_TIMESTAMP_MAX]; - - assert(i); - - if (!i->age_set) - return 0; - - n = now(CLOCK_REALTIME); - if (n < i->age) - return 0; - - cutoff = n - i->age; - - d = opendir_nomod(instance); - if (!d) { - if (errno == ENOENT || errno == ENOTDIR) { - log_debug_errno(errno, "Directory \"%s\": %m", instance); - return 0; - } - - log_error_errno(errno, "Failed to open directory %s: %m", instance); - return -errno; - } - - if (fstat(dirfd(d), &s) < 0) - return log_error_errno(errno, "stat(%s) failed: %m", i->path); - - if (!S_ISDIR(s.st_mode)) { - log_error("%s is not a directory.", i->path); - return -ENOTDIR; - } - - if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) - return log_error_errno(errno, "stat(%s/..) failed: %m", i->path); - - mountpoint = s.st_dev != ps.st_dev || - (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino); - - log_debug("Cleanup threshold for %s \"%s\" is %s", - mountpoint ? "mount point" : "directory", - instance, - format_timestamp_us(timestamp, sizeof(timestamp), cutoff)); - - return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint, - MAX_DEPTH, i->keep_first_level); -} - -static int clean_item(Item *i) { - int r = 0; - - assert(i); - - log_debug("Running clean action for entry %c %s", (char) i->type, i->path); - - switch (i->type) { - case CREATE_DIRECTORY: - case CREATE_SUBVOLUME: - case TRUNCATE_DIRECTORY: - case IGNORE_PATH: - case COPY_FILES: - clean_item_instance(i, i->path); - break; - case IGNORE_DIRECTORY_PATH: - r = glob_item(i, clean_item_instance, false); - break; - default: - break; - } - - return r; -} - -static int process_item_array(ItemArray *array); - -static int process_item(Item *i) { - int r, q, p, t = 0; - _cleanup_free_ char *prefix = NULL; - - assert(i); - - if (i->done) - return 0; - - i->done = true; - - prefix = malloc(strlen(i->path) + 1); - if (!prefix) - return log_oom(); - - PATH_FOREACH_PREFIX(prefix, i->path) { - ItemArray *j; - - j = hashmap_get(items, prefix); - if (j) { - int s; - - s = process_item_array(j); - if (s < 0 && t == 0) - t = s; - } - } - - r = arg_create ? create_item(i) : 0; - q = arg_remove ? remove_item(i) : 0; - p = arg_clean ? clean_item(i) : 0; - - return t < 0 ? t : - r < 0 ? r : - q < 0 ? q : - p; -} - -static int process_item_array(ItemArray *array) { - unsigned n; - int r = 0, k; - - assert(array); - - for (n = 0; n < array->count; n++) { - k = process_item(array->items + n); - if (k < 0 && r == 0) - r = k; - } - - return r; -} - -static void item_free_contents(Item *i) { - assert(i); - free(i->path); - free(i->argument); - strv_free(i->xattrs); - -#ifdef HAVE_ACL - acl_free(i->acl_access); - acl_free(i->acl_default); -#endif -} - -static void item_array_free(ItemArray *a) { - unsigned n; - - if (!a) - return; - - for (n = 0; n < a->count; n++) - item_free_contents(a->items + n); - free(a->items); - free(a); -} - -static bool item_compatible(Item *a, Item *b) { - assert(a); - assert(b); - assert(streq(a->path, b->path)); - - if (takes_ownership(a->type) && takes_ownership(b->type)) - /* check if the items are the same */ - return streq_ptr(a->argument, b->argument) && - - a->uid_set == b->uid_set && - a->uid == b->uid && - - a->gid_set == b->gid_set && - a->gid == b->gid && - - a->mode_set == b->mode_set && - a->mode == b->mode && - - a->age_set == b->age_set && - a->age == b->age && - - a->mask_perms == b->mask_perms && - - a->keep_first_level == b->keep_first_level && - - a->major_minor == b->major_minor; - - return true; -} - -static bool should_include_path(const char *path) { - char **prefix; - - STRV_FOREACH(prefix, arg_exclude_prefixes) - if (path_startswith(path, *prefix)) { - log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.", - path, *prefix); - return false; - } - - STRV_FOREACH(prefix, arg_include_prefixes) - if (path_startswith(path, *prefix)) { - log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix); - return true; - } - - /* no matches, so we should include this path only if we - * have no whitelist at all */ - if (strv_length(arg_include_prefixes) == 0) - return true; - - log_debug("Entry \"%s\" does not match any include prefix, skipping.", path); - return false; -} - -static int parse_line(const char *fname, unsigned line, const char *buffer) { - - static const Specifier specifier_table[] = { - { 'm', specifier_machine_id, NULL }, - { 'b', specifier_boot_id, NULL }, - { 'H', specifier_host_name, NULL }, - { 'v', specifier_kernel_release, NULL }, - {} - }; - - _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL; - _cleanup_(item_free_contents) Item i = {}; - ItemArray *existing; - Hashmap *h; - int r, pos; - bool force = false, boot = false; - - assert(fname); - assert(line >= 1); - assert(buffer); - - r = unquote_many_words( - &buffer, - 0, - &action, - &path, - &mode, - &user, - &group, - &age, - NULL); - if (r < 0) - return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line); - else if (r < 2) { - log_error("[%s:%u] Syntax error.", fname, line); - return -EIO; - } - - if (!isempty(buffer)) { - i.argument = strdup(buffer); - if (!i.argument) - return log_oom(); - } - - if (isempty(action)) { - log_error("[%s:%u] Command too short '%s'.", fname, line, action); - return -EINVAL; - } - - for (pos = 1; action[pos]; pos++) { - if (action[pos] == '!' && !boot) - boot = true; - else if (action[pos] == '+' && !force) - force = true; - else { - log_error("[%s:%u] Unknown modifiers in command '%s'", - fname, line, action); - return -EINVAL; - } - } - - if (boot && !arg_boot) { - log_debug("Ignoring entry %s \"%s\" because --boot is not specified.", - action, path); - return 0; - } - - i.type = action[0]; - i.force = force; - - r = specifier_printf(path, specifier_table, NULL, &i.path); - if (r < 0) { - log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path); - return r; - } - - switch (i.type) { - - case CREATE_FILE: - case TRUNCATE_FILE: - case CREATE_DIRECTORY: - case CREATE_SUBVOLUME: - case TRUNCATE_DIRECTORY: - case CREATE_FIFO: - case IGNORE_PATH: - case IGNORE_DIRECTORY_PATH: - case REMOVE_PATH: - case RECURSIVE_REMOVE_PATH: - case ADJUST_MODE: - case RELABEL_PATH: - case RECURSIVE_RELABEL_PATH: - break; - - case CREATE_SYMLINK: - if (!i.argument) { - i.argument = strappend("/usr/share/factory/", i.path); - if (!i.argument) - return log_oom(); - } - break; - - case WRITE_FILE: - if (!i.argument) { - log_error("[%s:%u] Write file requires argument.", fname, line); - return -EBADMSG; - } - break; - - case COPY_FILES: - if (!i.argument) { - i.argument = strappend("/usr/share/factory/", i.path); - if (!i.argument) - return log_oom(); - } else if (!path_is_absolute(i.argument)) { - log_error("[%s:%u] Source path is not absolute.", fname, line); - return -EBADMSG; - } - - path_kill_slashes(i.argument); - break; - - case CREATE_CHAR_DEVICE: - case CREATE_BLOCK_DEVICE: { - unsigned major, minor; - - if (!i.argument) { - log_error("[%s:%u] Device file requires argument.", fname, line); - return -EBADMSG; - } - - if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) { - log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument); - return -EBADMSG; - } - - i.major_minor = makedev(major, minor); - break; - } - - case SET_XATTR: - case RECURSIVE_SET_XATTR: - if (!i.argument) { - log_error("[%s:%u] Set extended attribute requires argument.", fname, line); - return -EBADMSG; - } - r = get_xattrs_from_arg(&i); - if (r < 0) - return r; - break; - - case SET_ACL: - case RECURSIVE_SET_ACL: - if (!i.argument) { - log_error("[%s:%u] Set ACLs requires argument.", fname, line); - return -EBADMSG; - } - r = get_acls_from_arg(&i); - if (r < 0) - return r; - break; - - case SET_ATTRIB: - case RECURSIVE_SET_ATTRIB: - if (!i.argument) { - log_error("[%s:%u] Set attrib requires argument.", fname, line); - return -EBADMSG; - } - r = get_attrib_from_arg(&i); - if (r < 0) - return r; - break; - - default: - log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type); - return -EBADMSG; - } - - if (!path_is_absolute(i.path)) { - log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path); - return -EBADMSG; - } - - path_kill_slashes(i.path); - - if (!should_include_path(i.path)) - return 0; - - if (arg_root) { - char *p; - - p = strappend(arg_root, i.path); - if (!p) - return log_oom(); - - free(i.path); - i.path = p; - } - - if (user && !streq(user, "-")) { - const char *u = user; - - r = get_user_creds(&u, &i.uid, NULL, NULL, NULL); - if (r < 0) { - log_error("[%s:%u] Unknown user '%s'.", fname, line, user); - return r; - } - - i.uid_set = true; - } - - if (group && !streq(group, "-")) { - const char *g = group; - - r = get_group_creds(&g, &i.gid); - if (r < 0) { - log_error("[%s:%u] Unknown group '%s'.", fname, line, group); - return r; - } - - i.gid_set = true; - } - - if (mode && !streq(mode, "-")) { - const char *mm = mode; - unsigned m; - - if (*mm == '~') { - i.mask_perms = true; - mm++; - } - - if (sscanf(mm, "%o", &m) != 1) { - log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode); - return -ENOENT; - } - - i.mode = m; - i.mode_set = true; - } else - i.mode = IN_SET(i.type, CREATE_DIRECTORY, CREATE_SUBVOLUME, TRUNCATE_DIRECTORY) - ? 0755 : 0644; - - if (age && !streq(age, "-")) { - const char *a = age; - - if (*a == '~') { - i.keep_first_level = true; - a++; - } - - if (parse_sec(a, &i.age) < 0) { - log_error("[%s:%u] Invalid age '%s'.", fname, line, age); - return -EBADMSG; - } - - i.age_set = true; - } - - h = needs_glob(i.type) ? globs : items; - - existing = hashmap_get(h, i.path); - if (existing) { - unsigned n; - - for (n = 0; n < existing->count; n++) { - if (!item_compatible(existing->items + n, &i)) { - log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.", - fname, line, i.path); - return 0; - } - } - } else { - existing = new0(ItemArray, 1); - r = hashmap_put(h, i.path, existing); - if (r < 0) - return log_oom(); - } - - if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1)) - return log_oom(); - - memcpy(existing->items + existing->count++, &i, sizeof(i)); - zero(i); - return 0; -} - -static void help(void) { - printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" - "Creates, deletes and cleans up volatile and temporary files and directories.\n\n" - " -h --help Show this help\n" - " --version Show package version\n" - " --create Create marked files/directories\n" - " --clean Clean up marked directories\n" - " --remove Remove marked files/directories\n" - " --boot Execute actions only safe at boot\n" - " --prefix=PATH Only apply rules with the specified prefix\n" - " --exclude-prefix=PATH Ignore rules with the specified prefix\n" - " --root=PATH Operate on an alternate filesystem root\n", - program_invocation_short_name); -} - -static int parse_argv(int argc, char *argv[]) { - - enum { - ARG_VERSION = 0x100, - ARG_CREATE, - ARG_CLEAN, - ARG_REMOVE, - ARG_BOOT, - ARG_PREFIX, - ARG_EXCLUDE_PREFIX, - ARG_ROOT, - }; - - static const struct option options[] = { - { "help", no_argument, NULL, 'h' }, - { "version", no_argument, NULL, ARG_VERSION }, - { "create", no_argument, NULL, ARG_CREATE }, - { "clean", no_argument, NULL, ARG_CLEAN }, - { "remove", no_argument, NULL, ARG_REMOVE }, - { "boot", no_argument, NULL, ARG_BOOT }, - { "prefix", required_argument, NULL, ARG_PREFIX }, - { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX }, - { "root", required_argument, NULL, ARG_ROOT }, - {} - }; - - int c; - - assert(argc >= 0); - assert(argv); - - while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) - - switch (c) { - - case 'h': - help(); - return 0; - - case ARG_VERSION: - puts(PACKAGE_STRING); - puts(SYSTEMD_FEATURES); - return 0; - - case ARG_CREATE: - arg_create = true; - break; - - case ARG_CLEAN: - arg_clean = true; - break; - - case ARG_REMOVE: - arg_remove = true; - break; - - case ARG_BOOT: - arg_boot = true; - break; - - case ARG_PREFIX: - if (strv_push(&arg_include_prefixes, optarg) < 0) - return log_oom(); - break; - - case ARG_EXCLUDE_PREFIX: - if (strv_push(&arg_exclude_prefixes, optarg) < 0) - return log_oom(); - break; - - case ARG_ROOT: - free(arg_root); - arg_root = path_make_absolute_cwd(optarg); - if (!arg_root) - return log_oom(); - - path_kill_slashes(arg_root); - break; - - case '?': - return -EINVAL; - - default: - assert_not_reached("Unhandled option"); - } - - if (!arg_clean && !arg_create && !arg_remove) { - log_error("You need to specify at least one of --clean, --create or --remove."); - return -EINVAL; - } - - return 1; -} - -static int read_config_file(const char *fn, bool ignore_enoent) { - _cleanup_fclose_ FILE *f = NULL; - char line[LINE_MAX]; - Iterator iterator; - unsigned v = 0; - Item *i; - int r; - - assert(fn); - - r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f); - if (r < 0) { - if (ignore_enoent && r == -ENOENT) { - log_debug_errno(r, "Failed to open \"%s\": %m", fn); - return 0; - } - - return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); - } - log_debug("Reading config file \"%s\".", fn); - - FOREACH_LINE(line, f, break) { - char *l; - int k; - - v++; - - l = strstrip(line); - if (*l == '#' || *l == 0) - continue; - - k = parse_line(fn, v, l); - if (k < 0 && r == 0) - r = k; - } - - /* we have to determine age parameter for each entry of type X */ - HASHMAP_FOREACH(i, globs, iterator) { - Iterator iter; - Item *j, *candidate_item = NULL; - - if (i->type != IGNORE_DIRECTORY_PATH) - continue; - - HASHMAP_FOREACH(j, items, iter) { - if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY && j->type != CREATE_SUBVOLUME) - continue; - - if (path_equal(j->path, i->path)) { - candidate_item = j; - break; - } - - if ((!candidate_item && path_startswith(i->path, j->path)) || - (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0))) - candidate_item = j; - } - - if (candidate_item && candidate_item->age_set) { - i->age = candidate_item->age; - i->age_set = true; - } - } - - if (ferror(f)) { - log_error_errno(errno, "Failed to read from file %s: %m", fn); - if (r == 0) - r = -EIO; - } - - return r; -} - -int main(int argc, char *argv[]) { - int r, k; - ItemArray *a; - Iterator iterator; - - r = parse_argv(argc, argv); - if (r <= 0) - goto finish; - - log_set_target(LOG_TARGET_AUTO); - log_parse_environment(); - log_open(); - - umask(0022); - - mac_selinux_init(NULL); - - items = hashmap_new(&string_hash_ops); - globs = hashmap_new(&string_hash_ops); - - if (!items || !globs) { - r = log_oom(); - goto finish; - } - - r = 0; - - if (optind < argc) { - int j; - - for (j = optind; j < argc; j++) { - k = read_config_file(argv[j], false); - if (k < 0 && r == 0) - r = k; - } - - } else { - _cleanup_strv_free_ char **files = NULL; - char **f; - - r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs); - if (r < 0) { - log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m"); - goto finish; - } - - STRV_FOREACH(f, files) { - k = read_config_file(*f, true); - if (k < 0 && r == 0) - r = k; - } - } - - HASHMAP_FOREACH(a, globs, iterator) { - k = process_item_array(a); - if (k < 0 && r == 0) - r = k; - } - - HASHMAP_FOREACH(a, items, iterator) { - k = process_item_array(a); - if (k < 0 && r == 0) - r = k; - } - -finish: - while ((a = hashmap_steal_first(items))) - item_array_free(a); - - while ((a = hashmap_steal_first(globs))) - item_array_free(a); - - hashmap_free(items); - hashmap_free(globs); - - free(arg_include_prefixes); - free(arg_exclude_prefixes); - free(arg_root); - - set_free_free(unix_sockets); - - mac_selinux_finish(); - - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; -} |