1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering, Kay Sievers
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
37 #include <sys/types.h>
38 #include <sys/param.h>
41 #include <sys/capability.h>
48 #include "path-util.h"
52 #include "conf-files.h"
53 #include "capability.h"
54 #include "specifier.h"
58 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
59 * them in the file system. This is intended to be used to create
60 * properly owned directories beneath /tmp, /var/tmp, /run, which are
61 * volatile and hence need to be recreated on bootup. */
63 typedef enum ItemType {
64 /* These ones take file names */
67 CREATE_DIRECTORY = 'd',
68 TRUNCATE_DIRECTORY = 'D',
71 CREATE_CHAR_DEVICE = 'c',
72 CREATE_BLOCK_DEVICE = 'b',
75 /* These ones take globs */
78 IGNORE_DIRECTORY_PATH = 'X',
80 RECURSIVE_REMOVE_PATH = 'R',
81 ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */
83 RECURSIVE_RELABEL_PATH = 'Z',
104 bool keep_first_level:1;
111 static bool arg_create = false;
112 static bool arg_clean = false;
113 static bool arg_remove = false;
114 static bool arg_boot = false;
116 static char **arg_include_prefixes = NULL;
117 static char **arg_exclude_prefixes = NULL;
118 static char *arg_root = NULL;
120 static const char conf_file_dirs[] = CONF_DIRS_NULSTR("tmpfiles");
122 #define MAX_DEPTH 256
124 static Hashmap *items = NULL, *globs = NULL;
125 static Set *unix_sockets = NULL;
127 static bool needs_glob(ItemType t) {
131 IGNORE_DIRECTORY_PATH,
133 RECURSIVE_REMOVE_PATH,
136 RECURSIVE_RELABEL_PATH);
139 static struct Item* find_glob(Hashmap *h, const char *match) {
143 HASHMAP_FOREACH(j, h, i)
144 if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
150 static void load_unix_sockets(void) {
151 _cleanup_fclose_ FILE *f = NULL;
157 /* We maintain a cache of the sockets we found in
158 * /proc/net/unix to speed things up a little. */
160 unix_sockets = set_new(&string_hash_ops);
164 f = fopen("/proc/net/unix", "re");
169 if (!fgets(line, sizeof(line), f))
176 if (!fgets(line, sizeof(line), f))
181 p = strchr(line, ':');
189 p += strspn(p, WHITESPACE);
190 p += strcspn(p, WHITESPACE); /* skip one more word */
191 p += strspn(p, WHITESPACE);
200 path_kill_slashes(s);
202 k = set_consume(unix_sockets, s);
203 if (k < 0 && k != -EEXIST)
210 set_free_free(unix_sockets);
214 static bool unix_socket_alive(const char *fn) {
220 return !!set_get(unix_sockets, (char*) fn);
222 /* We don't know, so assume yes */
226 static int dir_is_mount_point(DIR *d, const char *subdir) {
228 union file_handle_union h = {
229 .handle.handle_bytes = MAX_HANDLE_SZ
232 int mount_id_parent, mount_id;
235 r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0);
239 h.handle.handle_bytes = MAX_HANDLE_SZ;
240 r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0);
244 /* got no handle; make no assumptions, return error */
245 if (r_p < 0 && r < 0)
248 /* got both handles; if they differ, it is a mount point */
249 if (r_p >= 0 && r >= 0)
250 return mount_id_parent != mount_id;
252 /* got only one handle; assume different mount points if one
253 * of both queries was not supported by the filesystem */
254 if (r_p == -ENOSYS || r_p == -EOPNOTSUPP || r == -ENOSYS || r == -EOPNOTSUPP)
263 static int dir_cleanup(
267 const struct stat *ds,
272 bool keep_this_level) {
275 struct timespec times[2];
276 bool deleted = false;
279 while ((dent = readdir(d))) {
282 _cleanup_free_ char *sub_path = NULL;
284 if (streq(dent->d_name, ".") ||
285 streq(dent->d_name, ".."))
288 if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
292 /* FUSE, NFS mounts, SELinux might return EACCES */
294 log_debug_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
296 log_error_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
301 /* Stay on the same filesystem */
302 if (s.st_dev != rootdev)
305 /* Try to detect bind mounts of the same filesystem instance; they
306 * do not differ in device major/minors. This type of query is not
307 * supported on all kernels or filesystem types though. */
308 if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0)
311 /* Do not delete read-only files owned by root */
312 if (s.st_uid == 0 && !(s.st_mode & S_IWUSR))
315 sub_path = strjoin(p, "/", dent->d_name, NULL);
321 /* Is there an item configured for this path? */
322 if (hashmap_get(items, sub_path))
325 if (find_glob(globs, sub_path))
328 if (S_ISDIR(s.st_mode)) {
331 streq(dent->d_name, "lost+found") &&
336 log_warning("Reached max depth on %s.", sub_path);
338 _cleanup_closedir_ DIR *sub_dir;
341 sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW|O_NOATIME);
343 if (errno != ENOENT) {
344 log_error_errno(errno, "opendir(%s/%s) failed: %m", p, dent->d_name);
351 q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
356 /* Note: if you are wondering why we don't
357 * support the sticky bit for excluding
358 * directories from cleaning like we do it for
359 * other file system objects: well, the sticky
360 * bit already has a meaning for directories,
361 * so we don't want to overload that. */
366 /* Ignore ctime, we change it when deleting */
367 age = MAX(timespec_load(&s.st_mtim),
368 timespec_load(&s.st_atim));
372 if (i->type != IGNORE_DIRECTORY_PATH || !streq(dent->d_name, p)) {
373 log_debug("rmdir '%s'", sub_path);
375 if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) {
376 if (errno != ENOENT && errno != ENOTEMPTY) {
377 log_error_errno(errno, "rmdir(%s): %m", sub_path);
384 /* Skip files for which the sticky bit is
385 * set. These are semantics we define, and are
386 * unknown elsewhere. See XDG_RUNTIME_DIR
387 * specification for details. */
388 if (s.st_mode & S_ISVTX)
391 if (mountpoint && S_ISREG(s.st_mode)) {
392 if (streq(dent->d_name, ".journal") &&
396 if (streq(dent->d_name, "aquota.user") ||
397 streq(dent->d_name, "aquota.group"))
401 /* Ignore sockets that are listed in /proc/net/unix */
402 if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path))
405 /* Ignore device nodes */
406 if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode))
409 /* Keep files on this level around if this is
414 age = MAX3(timespec_load(&s.st_mtim),
415 timespec_load(&s.st_atim),
416 timespec_load(&s.st_ctim));
421 log_debug("unlink '%s'", sub_path);
423 if (unlinkat(dirfd(d), dent->d_name, 0) < 0) {
424 if (errno != ENOENT) {
425 log_error_errno(errno, "unlink(%s): %m", sub_path);
436 /* Restore original directory timestamps */
437 times[0] = ds->st_atim;
438 times[1] = ds->st_mtim;
440 if (futimens(dirfd(d), times) < 0)
441 log_error_errno(errno, "utimensat(%s): %m", p);
447 static int item_set_perms(Item *i, const char *path) {
454 st_valid = stat(path, &st) == 0;
456 /* not using i->path directly because it may be a glob */
460 if (i->mask_perms && st_valid) {
461 if (!(st.st_mode & 0111))
463 if (!(st.st_mode & 0222))
465 if (!(st.st_mode & 0444))
467 if (!S_ISDIR(st.st_mode))
468 m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */
471 if (!st_valid || m != (st.st_mode & 07777)) {
472 if (chmod(path, m) < 0) {
473 log_error_errno(errno, "chmod(%s) failed: %m", path);
479 if ((!st_valid || (i->uid != st.st_uid || i->gid != st.st_gid)) &&
480 (i->uid_set || i->gid_set))
482 i->uid_set ? i->uid : (uid_t) -1,
483 i->gid_set ? i->gid : (gid_t) -1) < 0) {
485 log_error_errno(errno, "chown(%s) failed: %m", path);
489 return label_fix(path, false, false);
492 static int write_one_file(Item *i, const char *path) {
493 _cleanup_close_ int fd = -1;
500 flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW :
501 i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0;
503 RUN_WITH_UMASK(0000) {
504 mac_selinux_create_file_prepare(path, S_IFREG);
505 fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode);
506 mac_selinux_create_file_clear();
510 if (i->type == WRITE_FILE && errno == ENOENT)
513 log_error_errno(errno, "Failed to create file %s: %m", path);
518 _cleanup_free_ char *unescaped;
522 unescaped = cunescape(i->argument);
526 l = strlen(unescaped);
527 n = write(fd, unescaped, l);
529 if (n < 0 || (size_t) n < l) {
530 log_error("Failed to write file %s: %s", path, n < 0 ? strerror(-n) : "Short write");
531 return n < 0 ? n : -EIO;
537 if (stat(path, &st) < 0) {
538 log_error_errno(errno, "stat(%s) failed: %m", path);
542 if (!S_ISREG(st.st_mode)) {
543 log_error("%s is not a file.", path);
547 r = item_set_perms(i, path);
554 static int item_set_perms_children(Item *i, const char *path) {
555 _cleanup_closedir_ DIR *d;
561 /* This returns the first error we run into, but nevertheless
566 return errno == ENOENT || errno == ENOTDIR ? 0 : -errno;
569 _cleanup_free_ char *p = NULL;
576 if (errno != 0 && r == 0)
582 if (streq(de->d_name, ".") || streq(de->d_name, ".."))
585 p = strjoin(path, "/", de->d_name, NULL);
589 q = item_set_perms(i, p);
590 if (q < 0 && q != -ENOENT && r == 0)
593 if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) {
594 q = item_set_perms_children(i, p);
603 static int item_set_perms_recursive(Item *i, const char *path) {
609 r = item_set_perms(i, path);
613 q = item_set_perms_children(i, path);
620 static int glob_item(Item *i, int (*action)(Item *, const char *)) {
621 _cleanup_globfree_ glob_t g = {};
626 k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g);
627 if (k != 0 && k != GLOB_NOMATCH) {
631 log_error_errno(errno, "glob(%s) failed: %m", i->path);
635 STRV_FOREACH(fn, g.gl_pathv) {
644 static int create_item(Item *i) {
653 case IGNORE_DIRECTORY_PATH:
655 case RECURSIVE_REMOVE_PATH:
660 r = write_one_file(i, i->path);
666 r = copy_tree(i->argument, i->path, false);
671 return log_error_errno(r, "Failed to copy files to %s: %m", i->path);
673 if (stat(i->argument, &a) < 0) {
674 log_error_errno(errno, "stat(%s) failed: %m", i->argument);
678 if (stat(i->path, &b) < 0) {
679 log_error_errno(errno, "stat(%s) failed: %m", i->path);
683 if ((a.st_mode ^ b.st_mode) & S_IFMT) {
684 log_debug("Can't copy to %s, file exists already and is of different type", i->path);
689 r = item_set_perms(i, i->path);
696 r = glob_item(i, write_one_file);
702 case TRUNCATE_DIRECTORY:
703 case CREATE_DIRECTORY:
705 RUN_WITH_UMASK(0000) {
706 mkdir_parents_label(i->path, 0755);
707 r = mkdir_label(i->path, i->mode);
712 return log_error_errno(r, "Failed to create directory %s: %m", i->path);
714 if (stat(i->path, &st) < 0) {
715 log_error_errno(errno, "stat(%s) failed: %m", i->path);
719 if (!S_ISDIR(st.st_mode)) {
720 log_debug("%s already exists and is not a directory.", i->path);
725 r = item_set_perms(i, i->path);
733 RUN_WITH_UMASK(0000) {
734 mac_selinux_create_file_prepare(i->path, S_IFIFO);
735 r = mkfifo(i->path, i->mode);
736 mac_selinux_create_file_clear();
740 if (errno != EEXIST) {
741 log_error_errno(errno, "Failed to create fifo %s: %m", i->path);
745 if (stat(i->path, &st) < 0) {
746 log_error_errno(errno, "stat(%s) failed: %m", i->path);
750 if (!S_ISFIFO(st.st_mode)) {
754 RUN_WITH_UMASK(0000) {
755 mac_selinux_create_file_prepare(i->path, S_IFIFO);
756 r = mkfifo_atomic(i->path, i->mode);
757 mac_selinux_create_file_clear();
761 return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
763 log_debug("%s is not a fifo.", i->path);
769 r = item_set_perms(i, i->path);
777 mac_selinux_create_file_prepare(i->path, S_IFLNK);
778 r = symlink(i->argument, i->path);
779 mac_selinux_create_file_clear();
782 _cleanup_free_ char *x = NULL;
784 if (errno != EEXIST) {
785 log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path);
789 r = readlink_malloc(i->path, &x);
790 if (r < 0 || !streq(i->argument, x)) {
793 mac_selinux_create_file_prepare(i->path, S_IFLNK);
794 r = symlink_atomic(i->argument, i->path);
795 mac_selinux_create_file_clear();
798 return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path);
800 log_debug("%s is not a symlink or does not point to the correct path.", i->path);
808 case CREATE_BLOCK_DEVICE:
809 case CREATE_CHAR_DEVICE: {
812 if (have_effective_cap(CAP_MKNOD) == 0) {
813 /* In a container we lack CAP_MKNOD. We
814 shouldn't attempt to create the device node in
815 that case to avoid noise, and we don't support
816 virtualized devices in containers anyway. */
818 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
822 file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
824 RUN_WITH_UMASK(0000) {
825 mac_selinux_create_file_prepare(i->path, file_type);
826 r = mknod(i->path, i->mode | file_type, i->major_minor);
827 mac_selinux_create_file_clear();
831 if (errno == EPERM) {
832 log_debug("We lack permissions, possibly because of cgroup configuration; "
833 "skipping creation of device node %s.", i->path);
837 if (errno != EEXIST) {
838 log_error_errno(errno, "Failed to create device node %s: %m", i->path);
842 if (stat(i->path, &st) < 0) {
843 log_error_errno(errno, "stat(%s) failed: %m", i->path);
847 if ((st.st_mode & S_IFMT) != file_type) {
851 RUN_WITH_UMASK(0000) {
852 mac_selinux_create_file_prepare(i->path, file_type);
853 r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
854 mac_selinux_create_file_clear();
858 return log_error_errno(r, "Failed to create device node %s: %m", i->path);
860 log_debug("%s is not a device node.", i->path);
866 r = item_set_perms(i, i->path);
876 r = glob_item(i, item_set_perms);
881 case RECURSIVE_RELABEL_PATH:
883 r = glob_item(i, item_set_perms_recursive);
890 log_debug("%s created successfully.", i->path);
895 static int remove_item_instance(Item *i, const char *instance) {
904 case CREATE_DIRECTORY:
907 case CREATE_BLOCK_DEVICE:
908 case CREATE_CHAR_DEVICE:
910 case IGNORE_DIRECTORY_PATH:
913 case RECURSIVE_RELABEL_PATH:
919 if (remove(instance) < 0 && errno != ENOENT) {
920 log_error_errno(errno, "remove(%s): %m", instance);
926 case TRUNCATE_DIRECTORY:
927 case RECURSIVE_REMOVE_PATH:
928 /* FIXME: we probably should use dir_cleanup() here
929 * instead of rm_rf() so that 'x' is honoured. */
930 r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false);
931 if (r < 0 && r != -ENOENT)
932 return log_error_errno(r, "rm_rf(%s): %m", instance);
940 static int remove_item(Item *i) {
949 case CREATE_DIRECTORY:
952 case CREATE_CHAR_DEVICE:
953 case CREATE_BLOCK_DEVICE:
955 case IGNORE_DIRECTORY_PATH:
958 case RECURSIVE_RELABEL_PATH:
964 case TRUNCATE_DIRECTORY:
965 case RECURSIVE_REMOVE_PATH:
966 r = glob_item(i, remove_item_instance);
973 static int clean_item_instance(Item *i, const char* instance) {
974 _cleanup_closedir_ DIR *d = NULL;
985 n = now(CLOCK_REALTIME);
991 d = opendir(instance);
993 if (errno == ENOENT || errno == ENOTDIR)
996 log_error_errno(errno, "Failed to open directory %s: %m", i->path);
1000 if (fstat(dirfd(d), &s) < 0) {
1001 log_error_errno(errno, "stat(%s) failed: %m", i->path);
1005 if (!S_ISDIR(s.st_mode)) {
1006 log_error("%s is not a directory.", i->path);
1010 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) {
1011 log_error_errno(errno, "stat(%s/..) failed: %m", i->path);
1015 mountpoint = s.st_dev != ps.st_dev ||
1016 (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
1018 r = dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
1019 MAX_DEPTH, i->keep_first_level);
1023 static int clean_item(Item *i) {
1029 case CREATE_DIRECTORY:
1030 case TRUNCATE_DIRECTORY:
1033 clean_item_instance(i, i->path);
1035 case IGNORE_DIRECTORY_PATH:
1036 r = glob_item(i, clean_item_instance);
1045 static int process_item(Item *i) {
1047 _cleanup_free_ char *prefix = NULL;
1056 prefix = malloc(strlen(i->path) + 1);
1060 PATH_FOREACH_PREFIX(prefix, i->path) {
1063 j = hashmap_get(items, prefix);
1068 r = arg_create ? create_item(i) : 0;
1069 q = arg_remove ? remove_item(i) : 0;
1070 p = arg_clean ? clean_item(i) : 0;
1081 static void item_free(Item *i) {
1091 DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free);
1093 static bool item_equal(Item *a, Item *b) {
1097 if (!streq_ptr(a->path, b->path))
1100 if (a->type != b->type)
1103 if (a->uid_set != b->uid_set ||
1104 (a->uid_set && a->uid != b->uid))
1107 if (a->gid_set != b->gid_set ||
1108 (a->gid_set && a->gid != b->gid))
1111 if (a->mode_set != b->mode_set ||
1112 (a->mode_set && a->mode != b->mode))
1115 if (a->age_set != b->age_set ||
1116 (a->age_set && a->age != b->age))
1119 if ((a->type == CREATE_FILE ||
1120 a->type == TRUNCATE_FILE ||
1121 a->type == WRITE_FILE ||
1122 a->type == CREATE_SYMLINK ||
1123 a->type == COPY_FILES) &&
1124 !streq_ptr(a->argument, b->argument))
1127 if ((a->type == CREATE_CHAR_DEVICE ||
1128 a->type == CREATE_BLOCK_DEVICE) &&
1129 a->major_minor != b->major_minor)
1135 static bool should_include_path(const char *path) {
1138 STRV_FOREACH(prefix, arg_exclude_prefixes)
1139 if (path_startswith(path, *prefix))
1142 STRV_FOREACH(prefix, arg_include_prefixes)
1143 if (path_startswith(path, *prefix))
1146 /* no matches, so we should include this path only if we
1147 * have no whitelist at all */
1148 return strv_length(arg_include_prefixes) == 0;
1151 static int parse_line(const char *fname, unsigned line, const char *buffer) {
1153 static const Specifier specifier_table[] = {
1154 { 'm', specifier_machine_id, NULL },
1155 { 'b', specifier_boot_id, NULL },
1156 { 'H', specifier_host_name, NULL },
1157 { 'v', specifier_kernel_release, NULL },
1161 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
1162 _cleanup_(item_freep) Item *i = NULL;
1173 "%ms %ms %ms %ms %ms %ms %n",
1182 log_error("[%s:%u] Syntax error.", fname, line);
1186 if (isempty(action)) {
1187 log_error("[%s:%u] Command too short '%s'.", fname, line, action);
1191 if (strlen(action) > 1 && !in_charset(action+1, "!+")) {
1192 log_error("[%s:%u] Unknown modifiers in command '%s'", fname, line, action);
1196 if (strchr(action+1, '!') && !arg_boot)
1205 i->force = !!strchr(action+1, '+');
1207 r = specifier_printf(path, specifier_table, NULL, &i->path);
1209 log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
1214 n += strspn(buffer+n, WHITESPACE);
1215 if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) {
1216 i->argument = unquote(buffer+n, "\"");
1226 case CREATE_DIRECTORY:
1227 case TRUNCATE_DIRECTORY:
1230 case IGNORE_DIRECTORY_PATH:
1232 case RECURSIVE_REMOVE_PATH:
1235 case RECURSIVE_RELABEL_PATH:
1238 case CREATE_SYMLINK:
1240 i->argument = strappend("/usr/share/factory", i->path);
1248 log_error("[%s:%u] Write file requires argument.", fname, line);
1255 i->argument = strappend("/usr/share/factory", i->path);
1260 if (!path_is_absolute(i->argument)) {
1261 log_error("[%s:%u] Source path is not absolute.", fname, line);
1265 path_kill_slashes(i->argument);
1268 case CREATE_CHAR_DEVICE:
1269 case CREATE_BLOCK_DEVICE: {
1270 unsigned major, minor;
1273 log_error("[%s:%u] Device file requires argument.", fname, line);
1277 if (sscanf(i->argument, "%u:%u", &major, &minor) != 2) {
1278 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i->argument);
1282 i->major_minor = makedev(major, minor);
1287 log_error("[%s:%u] Unknown command type '%c'.", fname, line, type);
1293 if (!path_is_absolute(i->path)) {
1294 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path);
1298 path_kill_slashes(i->path);
1300 if (!should_include_path(i->path))
1306 p = strappend(arg_root, i->path);
1314 if (user && !streq(user, "-")) {
1315 const char *u = user;
1317 r = get_user_creds(&u, &i->uid, NULL, NULL, NULL);
1319 log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
1326 if (group && !streq(group, "-")) {
1327 const char *g = group;
1329 r = get_group_creds(&g, &i->gid);
1331 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
1338 if (mode && !streq(mode, "-")) {
1339 const char *mm = mode;
1343 i->mask_perms = true;
1347 if (sscanf(mm, "%o", &m) != 1) {
1348 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
1356 i->type == CREATE_DIRECTORY ||
1357 i->type == TRUNCATE_DIRECTORY ? 0755 : 0644;
1359 if (age && !streq(age, "-")) {
1360 const char *a = age;
1363 i->keep_first_level = true;
1367 if (parse_sec(a, &i->age) < 0) {
1368 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
1375 h = needs_glob(i->type) ? globs : items;
1377 existing = hashmap_get(h, i->path);
1380 /* Two identical items are fine */
1381 if (!item_equal(existing, i))
1382 log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path);
1387 r = hashmap_put(h, i->path, i);
1389 return log_error_errno(r, "Failed to insert item %s: %m", i->path);
1391 i = NULL; /* avoid cleanup */
1396 static void help(void) {
1397 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
1398 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
1399 " -h --help Show this help\n"
1400 " --version Show package version\n"
1401 " --create Create marked files/directories\n"
1402 " --clean Clean up marked directories\n"
1403 " --remove Remove marked files/directories\n"
1404 " --boot Execute actions only safe at boot\n"
1405 " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n"
1406 " --exclude-prefix=PATH Ignore rules that apply to paths with the specified prefix\n"
1407 " --root=PATH Operate on an alternate filesystem root\n",
1408 program_invocation_short_name);
1411 static int parse_argv(int argc, char *argv[]) {
1414 ARG_VERSION = 0x100,
1424 static const struct option options[] = {
1425 { "help", no_argument, NULL, 'h' },
1426 { "version", no_argument, NULL, ARG_VERSION },
1427 { "create", no_argument, NULL, ARG_CREATE },
1428 { "clean", no_argument, NULL, ARG_CLEAN },
1429 { "remove", no_argument, NULL, ARG_REMOVE },
1430 { "boot", no_argument, NULL, ARG_BOOT },
1431 { "prefix", required_argument, NULL, ARG_PREFIX },
1432 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
1433 { "root", required_argument, NULL, ARG_ROOT },
1442 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
1451 puts(PACKAGE_STRING);
1452 puts(SYSTEMD_FEATURES);
1472 if (strv_push(&arg_include_prefixes, optarg) < 0)
1476 case ARG_EXCLUDE_PREFIX:
1477 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
1483 arg_root = path_make_absolute_cwd(optarg);
1487 path_kill_slashes(arg_root);
1494 assert_not_reached("Unhandled option");
1497 if (!arg_clean && !arg_create && !arg_remove) {
1498 log_error("You need to specify at least one of --clean, --create or --remove.");
1505 static int read_config_file(const char *fn, bool ignore_enoent) {
1506 _cleanup_fclose_ FILE *f = NULL;
1507 char line[LINE_MAX];
1515 r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f);
1517 if (ignore_enoent && r == -ENOENT)
1520 return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn);
1523 FOREACH_LINE(line, f, break) {
1530 if (*l == '#' || *l == 0)
1533 k = parse_line(fn, v, l);
1534 if (k < 0 && r == 0)
1538 /* we have to determine age parameter for each entry of type X */
1539 HASHMAP_FOREACH(i, globs, iterator) {
1541 Item *j, *candidate_item = NULL;
1543 if (i->type != IGNORE_DIRECTORY_PATH)
1546 HASHMAP_FOREACH(j, items, iter) {
1547 if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY)
1550 if (path_equal(j->path, i->path)) {
1555 if ((!candidate_item && path_startswith(i->path, j->path)) ||
1556 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
1560 if (candidate_item && candidate_item->age_set) {
1561 i->age = candidate_item->age;
1567 log_error_errno(errno, "Failed to read from file %s: %m", fn);
1575 int main(int argc, char *argv[]) {
1580 r = parse_argv(argc, argv);
1584 log_set_target(LOG_TARGET_AUTO);
1585 log_parse_environment();
1590 mac_selinux_init(NULL);
1592 items = hashmap_new(&string_hash_ops);
1593 globs = hashmap_new(&string_hash_ops);
1595 if (!items || !globs) {
1602 if (optind < argc) {
1605 for (j = optind; j < argc; j++) {
1606 k = read_config_file(argv[j], false);
1607 if (k < 0 && r == 0)
1612 _cleanup_strv_free_ char **files = NULL;
1615 r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
1617 log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m");
1621 STRV_FOREACH(f, files) {
1622 k = read_config_file(*f, true);
1623 if (k < 0 && r == 0)
1628 HASHMAP_FOREACH(i, globs, iterator)
1631 HASHMAP_FOREACH(i, items, iterator)
1635 while ((i = hashmap_steal_first(items)))
1638 while ((i = hashmap_steal_first(globs)))
1641 hashmap_free(items);
1642 hashmap_free(globs);
1644 free(arg_include_prefixes);
1645 free(arg_exclude_prefixes);
1648 set_free_free(unix_sockets);
1650 mac_selinux_finish();
1652 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;