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("stat(%s/%s) failed: %m", p, dent->d_name);
296 log_error("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("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("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("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("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("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("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("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("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("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 log_error_errno(r, "Failed to copy files to %s: %m", i->path);
675 if (stat(i->argument, &a) < 0) {
676 log_error("stat(%s) failed: %m", i->argument);
680 if (stat(i->path, &b) < 0) {
681 log_error("stat(%s) failed: %m", i->path);
685 if ((a.st_mode ^ b.st_mode) & S_IFMT) {
686 log_debug("Can't copy to %s, file exists already and is of different type", i->path);
691 r = item_set_perms(i, i->path);
698 r = glob_item(i, write_one_file);
704 case TRUNCATE_DIRECTORY:
705 case CREATE_DIRECTORY:
707 RUN_WITH_UMASK(0000) {
708 mkdir_parents_label(i->path, 0755);
709 r = mkdir_label(i->path, i->mode);
714 return log_error_errno(r, "Failed to create directory %s: %m", i->path);
716 if (stat(i->path, &st) < 0) {
717 log_error("stat(%s) failed: %m", i->path);
721 if (!S_ISDIR(st.st_mode)) {
722 log_debug("%s already exists and is not a directory.", i->path);
727 r = item_set_perms(i, i->path);
735 RUN_WITH_UMASK(0000) {
736 mac_selinux_create_file_prepare(i->path, S_IFIFO);
737 r = mkfifo(i->path, i->mode);
738 mac_selinux_create_file_clear();
742 if (errno != EEXIST) {
743 log_error("Failed to create fifo %s: %m", i->path);
747 if (stat(i->path, &st) < 0) {
748 log_error("stat(%s) failed: %m", i->path);
752 if (!S_ISFIFO(st.st_mode)) {
756 RUN_WITH_UMASK(0000) {
757 mac_selinux_create_file_prepare(i->path, S_IFIFO);
758 r = mkfifo_atomic(i->path, i->mode);
759 mac_selinux_create_file_clear();
763 return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
765 log_debug("%s is not a fifo.", i->path);
771 r = item_set_perms(i, i->path);
779 mac_selinux_create_file_prepare(i->path, S_IFLNK);
780 r = symlink(i->argument, i->path);
781 mac_selinux_create_file_clear();
784 _cleanup_free_ char *x = NULL;
786 if (errno != EEXIST) {
787 log_error("symlink(%s, %s) failed: %m", i->argument, i->path);
791 r = readlink_malloc(i->path, &x);
792 if (r < 0 || !streq(i->argument, x)) {
795 mac_selinux_create_file_prepare(i->path, S_IFLNK);
796 r = symlink_atomic(i->argument, i->path);
797 mac_selinux_create_file_clear();
800 return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path);
802 log_debug("%s is not a symlink or does not point to the correct path.", i->path);
810 case CREATE_BLOCK_DEVICE:
811 case CREATE_CHAR_DEVICE: {
814 if (have_effective_cap(CAP_MKNOD) == 0) {
815 /* In a container we lack CAP_MKNOD. We
816 shouldn't attempt to create the device node in
817 that case to avoid noise, and we don't support
818 virtualized devices in containers anyway. */
820 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
824 file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
826 RUN_WITH_UMASK(0000) {
827 mac_selinux_create_file_prepare(i->path, file_type);
828 r = mknod(i->path, i->mode | file_type, i->major_minor);
829 mac_selinux_create_file_clear();
833 if (errno == EPERM) {
834 log_debug("We lack permissions, possibly because of cgroup configuration; "
835 "skipping creation of device node %s.", i->path);
839 if (errno != EEXIST) {
840 log_error("Failed to create device node %s: %m", i->path);
844 if (stat(i->path, &st) < 0) {
845 log_error("stat(%s) failed: %m", i->path);
849 if ((st.st_mode & S_IFMT) != file_type) {
853 RUN_WITH_UMASK(0000) {
854 mac_selinux_create_file_prepare(i->path, file_type);
855 r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
856 mac_selinux_create_file_clear();
860 return log_error_errno(r, "Failed to create device node %s: %m", i->path);
862 log_debug("%s is not a device node.", i->path);
868 r = item_set_perms(i, i->path);
878 r = glob_item(i, item_set_perms);
883 case RECURSIVE_RELABEL_PATH:
885 r = glob_item(i, item_set_perms_recursive);
892 log_debug("%s created successfully.", i->path);
897 static int remove_item_instance(Item *i, const char *instance) {
906 case CREATE_DIRECTORY:
909 case CREATE_BLOCK_DEVICE:
910 case CREATE_CHAR_DEVICE:
912 case IGNORE_DIRECTORY_PATH:
915 case RECURSIVE_RELABEL_PATH:
921 if (remove(instance) < 0 && errno != ENOENT) {
922 log_error("remove(%s): %m", instance);
928 case TRUNCATE_DIRECTORY:
929 case RECURSIVE_REMOVE_PATH:
930 /* FIXME: we probably should use dir_cleanup() here
931 * instead of rm_rf() so that 'x' is honoured. */
932 r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false);
933 if (r < 0 && r != -ENOENT)
934 return log_error_errno(r, "rm_rf(%s): %m", instance);
942 static int remove_item(Item *i) {
951 case CREATE_DIRECTORY:
954 case CREATE_CHAR_DEVICE:
955 case CREATE_BLOCK_DEVICE:
957 case IGNORE_DIRECTORY_PATH:
960 case RECURSIVE_RELABEL_PATH:
966 case TRUNCATE_DIRECTORY:
967 case RECURSIVE_REMOVE_PATH:
968 r = glob_item(i, remove_item_instance);
975 static int clean_item_instance(Item *i, const char* instance) {
976 _cleanup_closedir_ DIR *d = NULL;
987 n = now(CLOCK_REALTIME);
993 d = opendir(instance);
995 if (errno == ENOENT || errno == ENOTDIR)
998 log_error("Failed to open directory %s: %m", i->path);
1002 if (fstat(dirfd(d), &s) < 0) {
1003 log_error("stat(%s) failed: %m", i->path);
1007 if (!S_ISDIR(s.st_mode)) {
1008 log_error("%s is not a directory.", i->path);
1012 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) {
1013 log_error("stat(%s/..) failed: %m", i->path);
1017 mountpoint = s.st_dev != ps.st_dev ||
1018 (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
1020 r = dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
1021 MAX_DEPTH, i->keep_first_level);
1025 static int clean_item(Item *i) {
1031 case CREATE_DIRECTORY:
1032 case TRUNCATE_DIRECTORY:
1035 clean_item_instance(i, i->path);
1037 case IGNORE_DIRECTORY_PATH:
1038 r = glob_item(i, clean_item_instance);
1047 static int process_item(Item *i) {
1049 _cleanup_free_ char *prefix = NULL;
1058 prefix = malloc(strlen(i->path) + 1);
1062 PATH_FOREACH_PREFIX(prefix, i->path) {
1065 j = hashmap_get(items, prefix);
1070 r = arg_create ? create_item(i) : 0;
1071 q = arg_remove ? remove_item(i) : 0;
1072 p = arg_clean ? clean_item(i) : 0;
1083 static void item_free(Item *i) {
1093 DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free);
1095 static bool item_equal(Item *a, Item *b) {
1099 if (!streq_ptr(a->path, b->path))
1102 if (a->type != b->type)
1105 if (a->uid_set != b->uid_set ||
1106 (a->uid_set && a->uid != b->uid))
1109 if (a->gid_set != b->gid_set ||
1110 (a->gid_set && a->gid != b->gid))
1113 if (a->mode_set != b->mode_set ||
1114 (a->mode_set && a->mode != b->mode))
1117 if (a->age_set != b->age_set ||
1118 (a->age_set && a->age != b->age))
1121 if ((a->type == CREATE_FILE ||
1122 a->type == TRUNCATE_FILE ||
1123 a->type == WRITE_FILE ||
1124 a->type == CREATE_SYMLINK ||
1125 a->type == COPY_FILES) &&
1126 !streq_ptr(a->argument, b->argument))
1129 if ((a->type == CREATE_CHAR_DEVICE ||
1130 a->type == CREATE_BLOCK_DEVICE) &&
1131 a->major_minor != b->major_minor)
1137 static bool should_include_path(const char *path) {
1140 STRV_FOREACH(prefix, arg_exclude_prefixes)
1141 if (path_startswith(path, *prefix))
1144 STRV_FOREACH(prefix, arg_include_prefixes)
1145 if (path_startswith(path, *prefix))
1148 /* no matches, so we should include this path only if we
1149 * have no whitelist at all */
1150 return strv_length(arg_include_prefixes) == 0;
1153 static int parse_line(const char *fname, unsigned line, const char *buffer) {
1155 static const Specifier specifier_table[] = {
1156 { 'm', specifier_machine_id, NULL },
1157 { 'b', specifier_boot_id, NULL },
1158 { 'H', specifier_host_name, NULL },
1159 { 'v', specifier_kernel_release, NULL },
1163 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
1164 _cleanup_(item_freep) Item *i = NULL;
1175 "%ms %ms %ms %ms %ms %ms %n",
1184 log_error("[%s:%u] Syntax error.", fname, line);
1188 if (isempty(action)) {
1189 log_error("[%s:%u] Command too short '%s'.", fname, line, action);
1193 if (strlen(action) > 1 && !in_charset(action+1, "!+")) {
1194 log_error("[%s:%u] Unknown modifiers in command '%s'", fname, line, action);
1198 if (strchr(action+1, '!') && !arg_boot)
1207 i->force = !!strchr(action+1, '+');
1209 r = specifier_printf(path, specifier_table, NULL, &i->path);
1211 log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
1216 n += strspn(buffer+n, WHITESPACE);
1217 if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) {
1218 i->argument = unquote(buffer+n, "\"");
1228 case CREATE_DIRECTORY:
1229 case TRUNCATE_DIRECTORY:
1232 case IGNORE_DIRECTORY_PATH:
1234 case RECURSIVE_REMOVE_PATH:
1237 case RECURSIVE_RELABEL_PATH:
1240 case CREATE_SYMLINK:
1242 i->argument = strappend("/usr/share/factory", i->path);
1250 log_error("[%s:%u] Write file requires argument.", fname, line);
1257 i->argument = strappend("/usr/share/factory", i->path);
1262 if (!path_is_absolute(i->argument)) {
1263 log_error("[%s:%u] Source path is not absolute.", fname, line);
1267 path_kill_slashes(i->argument);
1270 case CREATE_CHAR_DEVICE:
1271 case CREATE_BLOCK_DEVICE: {
1272 unsigned major, minor;
1275 log_error("[%s:%u] Device file requires argument.", fname, line);
1279 if (sscanf(i->argument, "%u:%u", &major, &minor) != 2) {
1280 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i->argument);
1284 i->major_minor = makedev(major, minor);
1289 log_error("[%s:%u] Unknown command type '%c'.", fname, line, type);
1295 if (!path_is_absolute(i->path)) {
1296 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path);
1300 path_kill_slashes(i->path);
1302 if (!should_include_path(i->path))
1308 p = strappend(arg_root, i->path);
1316 if (user && !streq(user, "-")) {
1317 const char *u = user;
1319 r = get_user_creds(&u, &i->uid, NULL, NULL, NULL);
1321 log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
1328 if (group && !streq(group, "-")) {
1329 const char *g = group;
1331 r = get_group_creds(&g, &i->gid);
1333 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
1340 if (mode && !streq(mode, "-")) {
1341 const char *mm = mode;
1345 i->mask_perms = true;
1349 if (sscanf(mm, "%o", &m) != 1) {
1350 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
1358 i->type == CREATE_DIRECTORY ||
1359 i->type == TRUNCATE_DIRECTORY ? 0755 : 0644;
1361 if (age && !streq(age, "-")) {
1362 const char *a = age;
1365 i->keep_first_level = true;
1369 if (parse_sec(a, &i->age) < 0) {
1370 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
1377 h = needs_glob(i->type) ? globs : items;
1379 existing = hashmap_get(h, i->path);
1382 /* Two identical items are fine */
1383 if (!item_equal(existing, i))
1384 log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path);
1389 r = hashmap_put(h, i->path, i);
1391 return log_error_errno(r, "Failed to insert item %s: %m", i->path);
1393 i = NULL; /* avoid cleanup */
1398 static void help(void) {
1399 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
1400 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
1401 " -h --help Show this help\n"
1402 " --version Show package version\n"
1403 " --create Create marked files/directories\n"
1404 " --clean Clean up marked directories\n"
1405 " --remove Remove marked files/directories\n"
1406 " --boot Execute actions only safe at boot\n"
1407 " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n"
1408 " --exclude-prefix=PATH Ignore rules that apply to paths with the specified prefix\n"
1409 " --root=PATH Operate on an alternate filesystem root\n",
1410 program_invocation_short_name);
1413 static int parse_argv(int argc, char *argv[]) {
1416 ARG_VERSION = 0x100,
1426 static const struct option options[] = {
1427 { "help", no_argument, NULL, 'h' },
1428 { "version", no_argument, NULL, ARG_VERSION },
1429 { "create", no_argument, NULL, ARG_CREATE },
1430 { "clean", no_argument, NULL, ARG_CLEAN },
1431 { "remove", no_argument, NULL, ARG_REMOVE },
1432 { "boot", no_argument, NULL, ARG_BOOT },
1433 { "prefix", required_argument, NULL, ARG_PREFIX },
1434 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
1435 { "root", required_argument, NULL, ARG_ROOT },
1444 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
1453 puts(PACKAGE_STRING);
1454 puts(SYSTEMD_FEATURES);
1474 if (strv_push(&arg_include_prefixes, optarg) < 0)
1478 case ARG_EXCLUDE_PREFIX:
1479 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
1485 arg_root = path_make_absolute_cwd(optarg);
1489 path_kill_slashes(arg_root);
1496 assert_not_reached("Unhandled option");
1499 if (!arg_clean && !arg_create && !arg_remove) {
1500 log_error("You need to specify at least one of --clean, --create or --remove.");
1507 static int read_config_file(const char *fn, bool ignore_enoent) {
1508 _cleanup_fclose_ FILE *f = NULL;
1509 char line[LINE_MAX];
1517 r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f);
1519 if (ignore_enoent && r == -ENOENT)
1522 log_error_errno(r, "Failed to open '%s', ignoring: %m", fn);
1526 FOREACH_LINE(line, f, break) {
1533 if (*l == '#' || *l == 0)
1536 k = parse_line(fn, v, l);
1537 if (k < 0 && r == 0)
1541 /* we have to determine age parameter for each entry of type X */
1542 HASHMAP_FOREACH(i, globs, iterator) {
1544 Item *j, *candidate_item = NULL;
1546 if (i->type != IGNORE_DIRECTORY_PATH)
1549 HASHMAP_FOREACH(j, items, iter) {
1550 if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY)
1553 if (path_equal(j->path, i->path)) {
1558 if ((!candidate_item && path_startswith(i->path, j->path)) ||
1559 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
1563 if (candidate_item && candidate_item->age_set) {
1564 i->age = candidate_item->age;
1570 log_error("Failed to read from file %s: %m", fn);
1578 int main(int argc, char *argv[]) {
1583 r = parse_argv(argc, argv);
1587 log_set_target(LOG_TARGET_AUTO);
1588 log_parse_environment();
1593 mac_selinux_init(NULL);
1595 items = hashmap_new(&string_hash_ops);
1596 globs = hashmap_new(&string_hash_ops);
1598 if (!items || !globs) {
1605 if (optind < argc) {
1608 for (j = optind; j < argc; j++) {
1609 k = read_config_file(argv[j], false);
1610 if (k < 0 && r == 0)
1615 _cleanup_strv_free_ char **files = NULL;
1618 r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
1620 log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m");
1624 STRV_FOREACH(f, files) {
1625 k = read_config_file(*f, true);
1626 if (k < 0 && r == 0)
1631 HASHMAP_FOREACH(i, globs, iterator)
1634 HASHMAP_FOREACH(i, items, iterator)
1638 while ((i = hashmap_steal_first(items)))
1641 while ((i = hashmap_steal_first(globs)))
1644 hashmap_free(items);
1645 hashmap_free(globs);
1647 free(arg_include_prefixes);
1648 free(arg_exclude_prefixes);
1651 set_free_free(unix_sockets);
1653 mac_selinux_finish();
1655 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;