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-rw-r--r--src/systemd-tmpfiles/Makefile84
-rw-r--r--src/systemd-tmpfiles/tmpfiles.c2364
2 files changed, 2448 insertions, 0 deletions
diff --git a/src/systemd-tmpfiles/Makefile b/src/systemd-tmpfiles/Makefile
new file mode 100644
index 0000000000..ffb01ae3d8
--- /dev/null
+++ b/src/systemd-tmpfiles/Makefile
@@ -0,0 +1,84 @@
+# -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+# This file is part of systemd.
+#
+# Copyright 2010-2012 Lennart Poettering
+# Copyright 2010-2012 Kay Sievers
+# Copyright 2013 Zbigniew Jędrzejewski-Szmek
+# Copyright 2013 David Strauss
+# Copyright 2016 Luke Shumaker
+#
+# 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 $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+ifneq ($(ENABLE_TMPFILES),)
+systemd_tmpfiles_SOURCES = \
+ src/tmpfiles/tmpfiles.c
+
+systemd_tmpfiles_LDADD = \
+ libshared.la
+
+rootbin_PROGRAMS += \
+ systemd-tmpfiles
+
+dist_systemunit_DATA += \
+ units/systemd-tmpfiles-clean.timer
+
+nodist_systemunit_DATA += \
+ units/systemd-tmpfiles-setup-dev.service \
+ units/systemd-tmpfiles-setup.service \
+ units/systemd-tmpfiles-clean.service
+
+nodist_tmpfiles_DATA = \
+ tmpfiles.d/systemd.conf \
+ tmpfiles.d/etc.conf
+
+dist_tmpfiles_DATA = \
+ tmpfiles.d/systemd-nologin.conf \
+ tmpfiles.d/tmp.conf \
+ tmpfiles.d/x11.conf \
+ tmpfiles.d/var.conf \
+ tmpfiles.d/home.conf \
+ tmpfiles.d/systemd-nspawn.conf \
+ tmpfiles.d/journal-nocow.conf
+
+ifneq ($(HAVE_SYSV_COMPAT),)
+dist_tmpfiles_DATA += \
+ tmpfiles.d/legacy.conf
+endif
+
+SYSINIT_TARGET_WANTS += \
+ systemd-tmpfiles-setup-dev.service \
+ systemd-tmpfiles-setup.service
+
+dist_zshcompletion_data += \
+ shell-completion/zsh/_systemd-tmpfiles
+
+TIMERS_TARGET_WANTS += \
+ systemd-tmpfiles-clean.timer
+
+INSTALL_DIRS += \
+ $(tmpfilesdir) \
+ $(sysconfdir)/tmpfiles.d
+endif
+
+EXTRA_DIST += \
+ tmpfiles.d/systemd.conf.m4 \
+ tmpfiles.d/etc.conf.m4 \
+ units/systemd-tmpfiles-setup-dev.service.in \
+ units/systemd-tmpfiles-setup.service.in \
+ units/systemd-tmpfiles-clean.service.in
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/systemd-tmpfiles/tmpfiles.c b/src/systemd-tmpfiles/tmpfiles.c
new file mode 100644
index 0000000000..7b105a6bd4
--- /dev/null
+++ b/src/systemd-tmpfiles/tmpfiles.c
@@ -0,0 +1,2364 @@
+/***
+ 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 <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fnmatch.h>
+#include <getopt.h>
+#include <glob.h>
+#include <limits.h>
+#include <linux/fs.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/xattr.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "acl-util.h"
+#include "alloc-util.h"
+#include "btrfs-util.h"
+#include "capability-util.h"
+#include "chattr-util.h"
+#include "conf-files.h"
+#include "copy.h"
+#include "def.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "fs-util.h"
+#include "glob-util.h"
+#include "io-util.h"
+#include "label.h"
+#include "log.h"
+#include "macro.h"
+#include "missing.h"
+#include "mkdir.h"
+#include "mount-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "rm-rf.h"
+#include "selinux-util.h"
+#include "set.h"
+#include "specifier.h"
+#include "stat-util.h"
+#include "stdio-util.h"
+#include "string-table.h"
+#include "string-util.h"
+#include "strv.h"
+#include "umask-util.h"
+#include "user-util.h"
+#include "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_SUBVOLUME_INHERIT_QUOTA = 'q',
+ CREATE_SUBVOLUME_NEW_QUOTA = 'Q',
+ CREATE_FIFO = 'p',
+ CREATE_SYMLINK = 'L',
+ CREATE_CHAR_DEVICE = 'c',
+ CREATE_BLOCK_DEVICE = 'b',
+ COPY_FILES = 'C',
+
+ /* These ones take globs */
+ WRITE_FILE = 'w',
+ SET_XATTR = 't',
+ RECURSIVE_SET_XATTR = 'T',
+ SET_ACL = 'a',
+ RECURSIVE_SET_ACL = 'A',
+ SET_ATTRIBUTE = 'h',
+ RECURSIVE_SET_ATTRIBUTE = 'H',
+ IGNORE_PATH = 'x',
+ IGNORE_DIRECTORY_PATH = 'X',
+ REMOVE_PATH = 'r',
+ RECURSIVE_REMOVE_PATH = 'R',
+ RELABEL_PATH = 'z',
+ RECURSIVE_RELABEL_PATH = 'Z',
+ ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */
+} 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 attribute_value;
+ unsigned attribute_mask;
+
+ bool uid_set:1;
+ bool gid_set:1;
+ bool mode_set:1;
+ bool age_set:1;
+ bool mask_perms:1;
+ bool attribute_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_PATHS_NULSTR("tmpfiles.d");
+
+#define MAX_DEPTH 256
+
+static OrderedHashmap *items = NULL, *globs = NULL;
+static Set *unix_sockets = NULL;
+
+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 },
+ {}
+};
+
+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,
+ SET_ATTRIBUTE,
+ RECURSIVE_SET_ATTRIBUTE);
+}
+
+static bool takes_ownership(ItemType t) {
+ return IN_SET(t,
+ CREATE_FILE,
+ TRUNCATE_FILE,
+ CREATE_DIRECTORY,
+ TRUNCATE_DIRECTORY,
+ CREATE_SUBVOLUME,
+ CREATE_SUBVOLUME_INHERIT_QUOTA,
+ CREATE_SUBVOLUME_NEW_QUOTA,
+ 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(OrderedHashmap *h, const char *match) {
+ ItemArray *j;
+ Iterator i;
+
+ ORDERED_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 (ordered_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 (s.st_uid == 0 && STR_IN_SET(dent->d_name,
+ ".journal",
+ "aquota.user",
+ "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) {
+ _cleanup_close_ int fd = -1;
+ struct stat st;
+
+ assert(i);
+ assert(path);
+
+ /* We open the file with O_PATH here, to make the operation
+ * somewhat atomic. Also there's unfortunately no fchmodat()
+ * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
+ * O_PATH. */
+
+ fd = open(path, O_RDONLY|O_NOFOLLOW|O_CLOEXEC|O_PATH|O_NOATIME);
+ if (fd < 0)
+ return log_error_errno(errno, "Adjusting owner and mode for %s failed: %m", path);
+
+ if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
+ return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
+
+ if (S_ISLNK(st.st_mode))
+ log_debug("Skipping mode an owner fix for symlink %s.", path);
+ else {
+ char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
+ xsprintf(fn, "/proc/self/fd/%i", fd);
+
+ /* not using i->path directly because it may be a glob */
+ if (i->mode_set) {
+ mode_t m = i->mode;
+
+ if (i->mask_perms) {
+ 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 (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(fn, m) < 0)
+ return log_error_errno(errno, "chmod(%s) failed: %m", path);
+ }
+ }
+
+ if ((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(fn,
+ 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);
+ }
+ }
+
+ fd = safe_close(fd);
+
+ return label_fix(path, false, false);
+}
+
+static int parse_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, *xattr_replaced = NULL;
+
+ r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE);
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p);
+ if (r <= 0)
+ break;
+
+ r = specifier_printf(xattr, specifier_table, NULL, &xattr_replaced);
+ if (r < 0)
+ return log_error_errno(r, "Failed to replace specifiers in extended attribute '%s': %m", xattr);
+
+ r = split_pair(xattr_replaced, "=", &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 extended attribute 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("Setting extended attribute '%s=%s' on %s.", *name, *value, path);
+ 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 parse_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, const char *pretty, acl_type_t type, acl_t acl, bool modify) {
+ _cleanup_(acl_free_charpp) char *t = NULL;
+ _cleanup_(acl_freep) acl_t dup = NULL;
+ int r;
+
+ /* 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("Setting %s ACL %s on %s.",
+ type == ACL_TYPE_ACCESS ? "access" : "default",
+ strna(t), pretty);
+
+ r = acl_set_file(path, type, dup);
+ if (r < 0)
+ /* Return positive to indicate we already warned */
+ return -log_error_errno(errno,
+ "Setting %s ACL \"%s\" on %s failed: %m",
+ type == ACL_TYPE_ACCESS ? "access" : "default",
+ strna(t), pretty);
+
+ return 0;
+}
+#endif
+
+static int path_set_acls(Item *item, const char *path) {
+ int r = 0;
+#ifdef HAVE_ACL
+ char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
+ _cleanup_close_ int fd = -1;
+ struct stat st;
+
+ assert(item);
+ assert(path);
+
+ fd = open(path, O_RDONLY|O_NOFOLLOW|O_CLOEXEC|O_PATH|O_NOATIME);
+ if (fd < 0)
+ return log_error_errno(errno, "Adjusting ACL of %s failed: %m", path);
+
+ if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
+ return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
+
+ if (S_ISLNK(st.st_mode)) {
+ log_debug("Skipping ACL fix for symlink %s.", path);
+ return 0;
+ }
+
+ xsprintf(fn, "/proc/self/fd/%i", fd);
+
+ if (item->acl_access)
+ r = path_set_acl(fn, path, ACL_TYPE_ACCESS, item->acl_access, item->force);
+
+ if (r == 0 && item->acl_default)
+ r = path_set_acl(fn, 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 ATTRIBUTES_ALL \
+ (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 parse_attribute_from_arg(Item *item) {
+
+ static const struct {
+ char character;
+ unsigned value;
+ } attributes[] = {
+ { 'A', FS_NOATIME_FL }, /* do not update atime */
+ { 'S', FS_SYNC_FL }, /* Synchronous updates */
+ { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */
+ { 'a', FS_APPEND_FL }, /* writes to file may only append */
+ { 'c', FS_COMPR_FL }, /* Compress file */
+ { 'd', FS_NODUMP_FL }, /* do not dump file */
+ { 'e', FS_EXTENT_FL }, /* Top of directory hierarchies*/
+ { 'i', FS_IMMUTABLE_FL }, /* Immutable file */
+ { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */
+ { 's', FS_SECRM_FL }, /* Secure deletion */
+ { 'u', FS_UNRM_FL }, /* Undelete */
+ { 't', FS_NOTAIL_FL }, /* file tail should not be merged */
+ { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies*/
+ { 'C', FS_NOCOW_FL }, /* Do not cow file */
+ };
+
+ enum {
+ MODE_ADD,
+ MODE_DEL,
+ MODE_SET
+ } mode = MODE_ADD;
+
+ unsigned value = 0, mask = 0;
+ const char *p;
+
+ assert(item);
+
+ p = item->argument;
+ if (p) {
+ if (*p == '+') {
+ mode = MODE_ADD;
+ p++;
+ } else if (*p == '-') {
+ mode = MODE_DEL;
+ p++;
+ } else if (*p == '=') {
+ mode = MODE_SET;
+ p++;
+ }
+ }
+
+ if (isempty(p) && mode != MODE_SET) {
+ log_error("Setting file attribute on '%s' needs an attribute specification.", item->path);
+ return -EINVAL;
+ }
+
+ for (; p && *p ; p++) {
+ unsigned i, v;
+
+ for (i = 0; i < ELEMENTSOF(attributes); i++)
+ if (*p == attributes[i].character)
+ break;
+
+ if (i >= ELEMENTSOF(attributes)) {
+ log_error("Unknown file attribute '%c' on '%s'.", *p, item->path);
+ return -EINVAL;
+ }
+
+ v = attributes[i].value;
+
+ if (mode == MODE_ADD || mode == MODE_SET)
+ value |= v;
+ else
+ value &= ~v;
+
+ mask |= v;
+ }
+
+ if (mode == MODE_SET)
+ mask |= ATTRIBUTES_ALL;
+
+ assert(mask != 0);
+
+ item->attribute_mask = mask;
+ item->attribute_value = value;
+ item->attribute_set = true;
+
+ return 0;
+}
+
+static int path_set_attribute(Item *item, const char *path) {
+ _cleanup_close_ int fd = -1;
+ struct stat st;
+ unsigned f;
+ int r;
+
+ if (!item->attribute_set || item->attribute_mask == 0)
+ return 0;
+
+ fd = open(path, O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_NOATIME|O_NOFOLLOW);
+ if (fd < 0) {
+ if (errno == ELOOP)
+ return log_error_errno(errno, "Skipping file attributes adjustment on symlink %s.", path);
+
+ return log_error_errno(errno, "Cannot open '%s': %m", path);
+ }
+
+ if (fstat(fd, &st) < 0)
+ return log_error_errno(errno, "Cannot stat '%s': %m", path);
+
+ /* Issuing the file attribute ioctls on device nodes is not
+ * safe, as that will be delivered to the drivers, not the
+ * file system containing the device node. */
+ if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) {
+ log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path);
+ return -EINVAL;
+ }
+
+ f = item->attribute_value & item->attribute_mask;
+
+ /* Mask away directory-specific flags */
+ if (!S_ISDIR(st.st_mode))
+ f &= ~FS_DIRSYNC_FL;
+
+ r = chattr_fd(fd, f, item->attribute_mask);
+ if (r < 0)
+ log_full_errno(r == -ENOTTY ? LOG_DEBUG : LOG_WARNING,
+ r,
+ "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
+ path, item->attribute_value, item->attribute_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;
+ }
+
+ r = -errno;
+ if (!i->argument && errno == EROFS && stat(path, &st) == 0 &&
+ (i->type == CREATE_FILE || st.st_size == 0))
+ goto check_mode;
+
+ return log_error_errno(r, "Failed to create file %s: %m", path);
+ }
+
+ if (i->argument) {
+ _cleanup_free_ char *unescaped = NULL, *replaced = NULL;
+
+ log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path);
+
+ r = cunescape(i->argument, 0, &unescaped);
+ if (r < 0)
+ return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument);
+
+ r = specifier_printf(unescaped, specifier_table, NULL, &replaced);
+ if (r < 0)
+ return log_error_errno(r, "Failed to replace specifiers in parameter to write '%s': %m", unescaped);
+
+ r = loop_write(fd, replaced, strlen(replaced), 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);
+
+ check_mode:
+ 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) {
+ _cleanup_free_ char *resolved = NULL;
+ struct stat st;
+ int r = 0;
+ int q = 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: {
+ r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
+ if (r < 0)
+ return log_error_errno(r, "Failed to substitute specifiers in copy source %s: %m", i->argument);
+
+ log_debug("Copying tree \"%s\" to \"%s\".", resolved, i->path);
+ r = copy_tree(resolved, i->path, false);
+
+ if (r == -EROFS && stat(i->path, &st) == 0)
+ r = -EEXIST;
+
+ 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(resolved, &a) < 0)
+ return log_error_errno(errno, "stat(%s) failed: %m", resolved);
+
+ 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:
+ case CREATE_SUBVOLUME_INHERIT_QUOTA:
+ case CREATE_SUBVOLUME_NEW_QUOTA:
+
+ RUN_WITH_UMASK(0000)
+ mkdir_parents_label(i->path, 0755);
+
+ if (IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) {
+
+ if (btrfs_is_subvol(isempty(arg_root) ? "/" : arg_root) <= 0)
+
+ /* Don't create a subvolume unless the
+ * root directory is one, too. We do
+ * this under the assumption that if
+ * the root directory is just a plain
+ * directory (i.e. very light-weight),
+ * we shouldn't try to split it up
+ * into subvolumes (i.e. more
+ * heavy-weight). Thus, chroot()
+ * environments and suchlike will get
+ * a full brtfs subvolume set up below
+ * their tree only if they
+ * specifically set up a btrfs
+ * subvolume for the root dir too. */
+
+ r = -ENOTTY;
+ else {
+ RUN_WITH_UMASK((~i->mode) & 0777)
+ r = btrfs_subvol_make(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) {
+ int k;
+
+ if (r != -EEXIST && r != -EROFS)
+ return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path);
+
+ k = is_dir(i->path, false);
+ if (k == -ENOENT && r == -EROFS)
+ return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", i->path);
+ if (k < 0)
+ return log_error_errno(k, "Failed to check if %s exists: %m", i->path);
+ if (!k) {
+ log_warning("\"%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);
+
+ if (IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) {
+ r = btrfs_subvol_auto_qgroup(i->path, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA);
+ if (r == -ENOTTY)
+ log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" because of unsupported file system or because directory is not a subvolume: %m", i->path);
+ else if (r == -EROFS)
+ log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" because of read-only file system: %m", i->path);
+ else if (r == -ENOPROTOOPT)
+ log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" because quota support is disabled: %m", i->path);
+ else if (r < 0)
+ q = log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path);
+ else if (r > 0)
+ log_debug("Adjusted quota for subvolume \"%s\".", i->path);
+ else if (r == 0)
+ log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path);
+ }
+
+ r = path_set_perms(i, i->path);
+ if (q < 0)
+ return q;
+ 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 (lstat(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_warning("\"%s\" already exists and 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: {
+ r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
+ if (r < 0)
+ return log_error_errno(r, "Failed to substitute specifiers in symlink target %s: %m", i->argument);
+
+ mac_selinux_create_file_prepare(i->path, S_IFLNK);
+ r = symlink(resolved, 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", resolved, i->path);
+
+ r = readlink_malloc(i->path, &x);
+ if (r < 0 || !streq(resolved, x)) {
+
+ if (i->force) {
+ mac_selinux_create_file_prepare(i->path, S_IFLNK);
+ r = symlink_atomic(resolved, i->path);
+ mac_selinux_create_file_clear();
+
+ if (r < 0)
+ return log_error_errno(r, "symlink(%s, %s) failed: %m", resolved, 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 (lstat(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_ATTRIBUTE:
+ r = glob_item(i, path_set_attribute, false);
+ if (r < 0)
+ return r;
+ break;
+
+ case RECURSIVE_SET_ATTRIBUTE:
+ r = glob_item(i, path_set_attribute, 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(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL);
+ 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_SUBVOLUME_INHERIT_QUOTA:
+ case CREATE_SUBVOLUME_NEW_QUOTA:
+ 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_ATTRIBUTE:
+ case RECURSIVE_SET_ATTRIBUTE:
+ 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_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 CREATE_SUBVOLUME_INHERIT_QUOTA:
+ case CREATE_SUBVOLUME_NEW_QUOTA:
+ 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 = ordered_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 int item_compare(const void *a, const void *b) {
+ const Item *x = a, *y = b;
+
+ /* Make sure that the ownership taking item is put first, so
+ * that we first create the node, and then can adjust it */
+
+ if (takes_ownership(x->type) && !takes_ownership(y->type))
+ return -1;
+ if (!takes_ownership(x->type) && takes_ownership(y->type))
+ return 1;
+
+ return (int) x->type - (int) y->type;
+}
+
+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) {
+
+ _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
+ _cleanup_(item_free_contents) Item i = {};
+ ItemArray *existing;
+ OrderedHashmap *h;
+ int r, pos;
+ bool force = false, boot = false;
+
+ assert(fname);
+ assert(line >= 1);
+ assert(buffer);
+
+ r = extract_many_words(
+ &buffer,
+ NULL,
+ EXTRACT_QUOTES,
+ &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) && !streq(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_DIRECTORY:
+ case CREATE_SUBVOLUME:
+ case CREATE_SUBVOLUME_INHERIT_QUOTA:
+ case CREATE_SUBVOLUME_NEW_QUOTA:
+ 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:
+ if (i.argument)
+ log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type);
+
+ break;
+
+ case CREATE_FILE:
+ case TRUNCATE_FILE:
+ 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 = parse_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 = parse_acls_from_arg(&i);
+ if (r < 0)
+ return r;
+ break;
+
+ case SET_ATTRIBUTE:
+ case RECURSIVE_SET_ATTRIBUTE:
+ if (!i.argument) {
+ log_error("[%s:%u] Set file attribute requires argument.", fname, line);
+ return -EBADMSG;
+ }
+ r = parse_attribute_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 = prefix_root(arg_root, i.path);
+ if (!p)
+ return log_oom();
+
+ free(i.path);
+ i.path = p;
+ }
+
+ if (!isempty(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 (!isempty(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 (!isempty(mode) && !streq(mode, "-")) {
+ const char *mm = mode;
+ unsigned m;
+
+ if (*mm == '~') {
+ i.mask_perms = true;
+ mm++;
+ }
+
+ if (parse_mode(mm, &m) < 0) {
+ log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
+ return -EBADMSG;
+ }
+
+ i.mode = m;
+ i.mode_set = true;
+ } else
+ i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644;
+
+ if (!isempty(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 = ordered_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 = ordered_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));
+
+ /* Sort item array, to enforce stable ordering of application */
+ qsort_safe(existing->items, existing->count, sizeof(Item), item_compare);
+
+ 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, r;
+
+ 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:
+ return version();
+
+ 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:
+ r = parse_path_argument_and_warn(optarg, true, &arg_root);
+ if (r < 0)
+ return r;
+ 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 */
+ ORDERED_HASHMAP_FOREACH(i, globs, iterator) {
+ Iterator iter;
+ Item *j, *candidate_item = NULL;
+
+ if (i->type != IGNORE_DIRECTORY_PATH)
+ continue;
+
+ ORDERED_HASHMAP_FOREACH(j, items, iter) {
+ if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA))
+ 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 = ordered_hashmap_new(&string_hash_ops);
+ globs = ordered_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;
+ }
+ }
+
+ /* The non-globbing ones usually create things, hence we apply
+ * them first */
+ ORDERED_HASHMAP_FOREACH(a, items, iterator) {
+ k = process_item_array(a);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+ /* The globbing ones usually alter things, hence we apply them
+ * second. */
+ ORDERED_HASHMAP_FOREACH(a, globs, iterator) {
+ k = process_item_array(a);
+ if (k < 0 && r == 0)
+ r = k;
+ }
+
+finish:
+ while ((a = ordered_hashmap_steal_first(items)))
+ item_array_free(a);
+
+ while ((a = ordered_hashmap_steal_first(globs)))
+ item_array_free(a);
+
+ ordered_hashmap_free(items);
+ ordered_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;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-10-30 03:53:07 +0000