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;
109 static bool arg_create = false;
110 static bool arg_clean = false;
111 static bool arg_remove = false;
112 static bool arg_boot = false;
114 static char **arg_include_prefixes = NULL;
115 static char **arg_exclude_prefixes = NULL;
116 static char *arg_root = NULL;
118 static const char conf_file_dirs[] =
121 "/usr/local/lib/tmpfiles.d\0"
122 "/usr/lib/tmpfiles.d\0"
123 #ifdef HAVE_SPLIT_USR
128 #define MAX_DEPTH 256
130 static Hashmap *items = NULL, *globs = NULL;
131 static Set *unix_sockets = NULL;
133 static bool needs_glob(ItemType t) {
137 IGNORE_DIRECTORY_PATH,
139 RECURSIVE_REMOVE_PATH,
142 RECURSIVE_RELABEL_PATH);
145 static struct Item* find_glob(Hashmap *h, const char *match) {
149 HASHMAP_FOREACH(j, h, i)
150 if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
156 static void load_unix_sockets(void) {
157 _cleanup_fclose_ FILE *f = NULL;
163 /* We maintain a cache of the sockets we found in
164 * /proc/net/unix to speed things up a little. */
166 unix_sockets = set_new(string_hash_func, string_compare_func);
170 f = fopen("/proc/net/unix", "re");
175 if (!fgets(line, sizeof(line), f))
182 if (!fgets(line, sizeof(line), f))
187 p = strchr(line, ':');
195 p += strspn(p, WHITESPACE);
196 p += strcspn(p, WHITESPACE); /* skip one more word */
197 p += strspn(p, WHITESPACE);
206 path_kill_slashes(s);
208 k = set_consume(unix_sockets, s);
209 if (k < 0 && k != -EEXIST)
216 set_free_free(unix_sockets);
220 static bool unix_socket_alive(const char *fn) {
226 return !!set_get(unix_sockets, (char*) fn);
228 /* We don't know, so assume yes */
232 static int dir_is_mount_point(DIR *d, const char *subdir) {
234 union file_handle_union h = {
235 .handle.handle_bytes = MAX_HANDLE_SZ
238 int mount_id_parent, mount_id;
241 r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0);
245 h.handle.handle_bytes = MAX_HANDLE_SZ;
246 r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0);
250 /* got no handle; make no assumptions, return error */
251 if (r_p < 0 && r < 0)
254 /* got both handles; if they differ, it is a mount point */
255 if (r_p >= 0 && r >= 0)
256 return mount_id_parent != mount_id;
258 /* got only one handle; assume different mount points if one
259 * of both queries was not supported by the filesystem */
260 if (r_p == -ENOSYS || r_p == -ENOTSUP || r == -ENOSYS || r == -ENOTSUP)
269 static int dir_cleanup(
273 const struct stat *ds,
278 bool keep_this_level) {
281 struct timespec times[2];
282 bool deleted = false;
285 while ((dent = readdir(d))) {
288 _cleanup_free_ char *sub_path = NULL;
290 if (streq(dent->d_name, ".") ||
291 streq(dent->d_name, ".."))
294 if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
298 /* FUSE, NFS mounts, SELinux might return EACCES */
300 log_debug("stat(%s/%s) failed: %m", p, dent->d_name);
302 log_error("stat(%s/%s) failed: %m", p, dent->d_name);
307 /* Stay on the same filesystem */
308 if (s.st_dev != rootdev)
311 /* Try to detect bind mounts of the same filesystem instance; they
312 * do not differ in device major/minors. This type of query is not
313 * supported on all kernels or filesystem types though. */
314 if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0)
317 /* Do not delete read-only files owned by root */
318 if (s.st_uid == 0 && !(s.st_mode & S_IWUSR))
321 sub_path = strjoin(p, "/", dent->d_name, NULL);
327 /* Is there an item configured for this path? */
328 if (hashmap_get(items, sub_path))
331 if (find_glob(globs, sub_path))
334 if (S_ISDIR(s.st_mode)) {
337 streq(dent->d_name, "lost+found") &&
342 log_warning("Reached max depth on %s.", sub_path);
344 _cleanup_closedir_ DIR *sub_dir;
347 sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW|O_NOATIME);
349 if (errno != ENOENT) {
350 log_error("opendir(%s/%s) failed: %m", p, dent->d_name);
357 q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
362 /* Note: if you are wondering why we don't
363 * support the sticky bit for excluding
364 * directories from cleaning like we do it for
365 * other file system objects: well, the sticky
366 * bit already has a meaning for directories,
367 * so we don't want to overload that. */
372 /* Ignore ctime, we change it when deleting */
373 age = MAX(timespec_load(&s.st_mtim),
374 timespec_load(&s.st_atim));
378 if (i->type != IGNORE_DIRECTORY_PATH || !streq(dent->d_name, p)) {
379 log_debug("rmdir '%s'", sub_path);
381 if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) {
382 if (errno != ENOENT && errno != ENOTEMPTY) {
383 log_error("rmdir(%s): %m", sub_path);
390 /* Skip files for which the sticky bit is
391 * set. These are semantics we define, and are
392 * unknown elsewhere. See XDG_RUNTIME_DIR
393 * specification for details. */
394 if (s.st_mode & S_ISVTX)
397 if (mountpoint && S_ISREG(s.st_mode)) {
398 if (streq(dent->d_name, ".journal") &&
402 if (streq(dent->d_name, "aquota.user") ||
403 streq(dent->d_name, "aquota.group"))
407 /* Ignore sockets that are listed in /proc/net/unix */
408 if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path))
411 /* Ignore device nodes */
412 if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode))
415 /* Keep files on this level around if this is
420 age = MAX3(timespec_load(&s.st_mtim),
421 timespec_load(&s.st_atim),
422 timespec_load(&s.st_ctim));
427 log_debug("unlink '%s'", sub_path);
429 if (unlinkat(dirfd(d), dent->d_name, 0) < 0) {
430 if (errno != ENOENT) {
431 log_error("unlink(%s): %m", sub_path);
442 /* Restore original directory timestamps */
443 times[0] = ds->st_atim;
444 times[1] = ds->st_mtim;
446 if (futimens(dirfd(d), times) < 0)
447 log_error("utimensat(%s): %m", p);
453 static int item_set_perms(Item *i, const char *path) {
457 /* not using i->path directly because it may be a glob */
464 if (stat(path, &st) >= 0) {
465 if (!(st.st_mode & 0111))
467 if (!(st.st_mode & 0222))
469 if (!(st.st_mode & 0444))
471 if (!S_ISDIR(st.st_mode))
472 m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */
476 if (chmod(path, m) < 0) {
477 log_error("chmod(%s) failed: %m", path);
482 if (i->uid_set || i->gid_set)
484 i->uid_set ? i->uid : (uid_t) -1,
485 i->gid_set ? i->gid : (gid_t) -1) < 0) {
487 log_error("chown(%s) failed: %m", path);
491 return label_fix(path, false, false);
494 static int write_one_file(Item *i, const char *path) {
503 flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND :
504 i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC : 0;
507 label_context_set(path, S_IFREG);
508 fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY|O_NOFOLLOW, i->mode);
509 label_context_clear();
513 if (i->type == WRITE_FILE && errno == ENOENT)
516 log_error("Failed to create file %s: %m", path);
521 _cleanup_free_ char *unescaped;
525 unescaped = cunescape(i->argument);
526 if (unescaped == NULL) {
531 l = strlen(unescaped);
532 n = write(fd, unescaped, l);
534 if (n < 0 || (size_t) n < l) {
535 log_error("Failed to write file %s: %s", path, n < 0 ? strerror(-n) : "Short write");
537 return n < 0 ? n : -EIO;
543 if (stat(path, &st) < 0) {
544 log_error("stat(%s) failed: %m", path);
548 if (!S_ISREG(st.st_mode)) {
549 log_error("%s is not a file.", path);
553 r = item_set_perms(i, path);
560 static int item_set_perms_children(Item *i, const char *path) {
561 _cleanup_closedir_ DIR *d;
567 /* This returns the first error we run into, but nevertheless
572 return errno == ENOENT || errno == ENOTDIR ? 0 : -errno;
575 _cleanup_free_ char *p = NULL;
582 if (errno != 0 && r == 0)
588 if (streq(de->d_name, ".") || streq(de->d_name, ".."))
591 p = strjoin(path, "/", de->d_name, NULL);
595 q = item_set_perms(i, p);
596 if (q < 0 && q != -ENOENT && r == 0)
599 if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) {
600 q = item_set_perms_children(i, p);
609 static int item_set_perms_recursive(Item *i, const char *path) {
615 r = item_set_perms(i, path);
619 q = item_set_perms_children(i, path);
626 static int glob_item(Item *i, int (*action)(Item *, const char *)) {
627 _cleanup_globfree_ glob_t g = {};
632 k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g);
633 if (k != 0 && k != GLOB_NOMATCH) {
637 log_error("glob(%s) failed: %m", i->path);
641 STRV_FOREACH(fn, g.gl_pathv) {
650 static int create_item(Item *i) {
659 case IGNORE_DIRECTORY_PATH:
661 case RECURSIVE_REMOVE_PATH:
666 r = write_one_file(i, i->path);
672 r = copy_tree(i->argument, i->path);
674 log_error("Failed to copy files: %s", strerror(-r));
678 r = item_set_perms(i, i->path);
685 r = glob_item(i, write_one_file);
691 case TRUNCATE_DIRECTORY:
692 case CREATE_DIRECTORY:
694 RUN_WITH_UMASK(0000) {
695 mkdir_parents_label(i->path, 0755);
696 r = mkdir(i->path, i->mode);
699 if (r < 0 && errno != EEXIST) {
700 log_error("Failed to create directory %s: %m", i->path);
704 if (stat(i->path, &st) < 0) {
705 log_error("stat(%s) failed: %m", i->path);
709 if (!S_ISDIR(st.st_mode)) {
710 log_error("%s is not a directory.", i->path);
714 r = item_set_perms(i, i->path);
722 RUN_WITH_UMASK(0000) {
723 r = mkfifo(i->path, i->mode);
726 if (r < 0 && errno != EEXIST) {
727 log_error("Failed to create fifo %s: %m", i->path);
731 if (stat(i->path, &st) < 0) {
732 log_error("stat(%s) failed: %m", i->path);
736 if (!S_ISFIFO(st.st_mode)) {
737 log_error("%s is not a fifo.", i->path);
741 r = item_set_perms(i, i->path);
747 case CREATE_SYMLINK: {
748 _cleanup_free_ char *x = NULL;
750 label_context_set(i->path, S_IFLNK);
751 r = symlink(i->argument, i->path);
752 label_context_clear();
754 if (r < 0 && errno != EEXIST) {
755 log_error("symlink(%s, %s) failed: %m", i->argument, i->path);
759 r = readlink_malloc(i->path, &x);
761 log_error("readlink(%s) failed: %s", i->path, strerror(-r));
765 if (!streq(i->argument, x)) {
766 log_error("%s is not the right symlink.", i->path);
773 case CREATE_BLOCK_DEVICE:
774 case CREATE_CHAR_DEVICE: {
777 if (have_effective_cap(CAP_MKNOD) == 0) {
778 /* In a container we lack CAP_MKNOD. We
779 shouldn't attempt to create the device node in
780 that case to avoid noise, and we don't support
781 virtualized devices in containers anyway. */
783 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
787 file_type = (i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR);
789 RUN_WITH_UMASK(0000) {
790 label_context_set(i->path, file_type);
791 r = mknod(i->path, i->mode | file_type, i->major_minor);
792 label_context_clear();
795 if (r < 0 && errno != EEXIST) {
796 log_error("Failed to create device node %s: %m", i->path);
800 if (stat(i->path, &st) < 0) {
801 log_error("stat(%s) failed: %m", i->path);
805 if ((st.st_mode & S_IFMT) != file_type) {
806 log_error("%s is not a device node.", i->path);
810 r = item_set_perms(i, i->path);
820 r = glob_item(i, item_set_perms);
825 case RECURSIVE_RELABEL_PATH:
827 r = glob_item(i, item_set_perms_recursive);
834 log_debug("%s created successfully.", i->path);
839 static int remove_item_instance(Item *i, const char *instance) {
848 case CREATE_DIRECTORY:
851 case CREATE_BLOCK_DEVICE:
852 case CREATE_CHAR_DEVICE:
854 case IGNORE_DIRECTORY_PATH:
857 case RECURSIVE_RELABEL_PATH:
863 if (remove(instance) < 0 && errno != ENOENT) {
864 log_error("remove(%s): %m", instance);
870 case TRUNCATE_DIRECTORY:
871 case RECURSIVE_REMOVE_PATH:
872 /* FIXME: we probably should use dir_cleanup() here
873 * instead of rm_rf() so that 'x' is honoured. */
874 r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false);
875 if (r < 0 && r != -ENOENT) {
876 log_error("rm_rf(%s): %s", instance, strerror(-r));
886 static int remove_item(Item *i) {
895 case CREATE_DIRECTORY:
898 case CREATE_CHAR_DEVICE:
899 case CREATE_BLOCK_DEVICE:
901 case IGNORE_DIRECTORY_PATH:
904 case RECURSIVE_RELABEL_PATH:
910 case TRUNCATE_DIRECTORY:
911 case RECURSIVE_REMOVE_PATH:
912 r = glob_item(i, remove_item_instance);
919 static int clean_item_instance(Item *i, const char* instance) {
920 _cleanup_closedir_ DIR *d = NULL;
931 n = now(CLOCK_REALTIME);
937 d = opendir(instance);
939 if (errno == ENOENT || errno == ENOTDIR)
942 log_error("Failed to open directory %s: %m", i->path);
946 if (fstat(dirfd(d), &s) < 0) {
947 log_error("stat(%s) failed: %m", i->path);
951 if (!S_ISDIR(s.st_mode)) {
952 log_error("%s is not a directory.", i->path);
956 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) {
957 log_error("stat(%s/..) failed: %m", i->path);
961 mountpoint = s.st_dev != ps.st_dev ||
962 (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
964 r = dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
965 MAX_DEPTH, i->keep_first_level);
969 static int clean_item(Item *i) {
975 case CREATE_DIRECTORY:
976 case TRUNCATE_DIRECTORY:
979 clean_item_instance(i, i->path);
981 case IGNORE_DIRECTORY_PATH:
982 r = glob_item(i, clean_item_instance);
991 static int process_item(Item *i) {
993 char prefix[PATH_MAX];
1002 PATH_FOREACH_PREFIX(prefix, i->path) {
1005 j = hashmap_get(items, prefix);
1010 r = arg_create ? create_item(i) : 0;
1011 q = arg_remove ? remove_item(i) : 0;
1012 p = arg_clean ? clean_item(i) : 0;
1023 static void item_free(Item *i) {
1031 DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free);
1033 static bool item_equal(Item *a, Item *b) {
1037 if (!streq_ptr(a->path, b->path))
1040 if (a->type != b->type)
1043 if (a->uid_set != b->uid_set ||
1044 (a->uid_set && a->uid != b->uid))
1047 if (a->gid_set != b->gid_set ||
1048 (a->gid_set && a->gid != b->gid))
1051 if (a->mode_set != b->mode_set ||
1052 (a->mode_set && a->mode != b->mode))
1055 if (a->age_set != b->age_set ||
1056 (a->age_set && a->age != b->age))
1059 if ((a->type == CREATE_FILE ||
1060 a->type == TRUNCATE_FILE ||
1061 a->type == WRITE_FILE ||
1062 a->type == CREATE_SYMLINK ||
1063 a->type == COPY_FILES) &&
1064 !streq_ptr(a->argument, b->argument))
1067 if ((a->type == CREATE_CHAR_DEVICE ||
1068 a->type == CREATE_BLOCK_DEVICE) &&
1069 a->major_minor != b->major_minor)
1075 static bool should_include_path(const char *path) {
1078 STRV_FOREACH(prefix, arg_exclude_prefixes)
1079 if (path_startswith(path, *prefix))
1082 STRV_FOREACH(prefix, arg_include_prefixes)
1083 if (path_startswith(path, *prefix))
1086 /* no matches, so we should include this path only if we
1087 * have no whitelist at all */
1088 return strv_length(arg_include_prefixes) == 0;
1091 static int parse_line(const char *fname, unsigned line, const char *buffer) {
1093 static const Specifier specifier_table[] = {
1094 { 'm', specifier_machine_id, NULL },
1095 { 'b', specifier_boot_id, NULL },
1096 { 'H', specifier_host_name, NULL },
1097 { 'v', specifier_kernel_release, NULL },
1101 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
1102 _cleanup_(item_freep) Item *i = NULL;
1113 "%ms %ms %ms %ms %ms %ms %n",
1122 log_error("[%s:%u] Syntax error.", fname, line);
1126 if (strlen(action) > 2 || (strlen(action) > 1 && action[1] != '!')) {
1127 log_error("[%s:%u] Unknown modifier '%s'", fname, line, action);
1129 } else if (strlen(action) > 1 && !arg_boot)
1138 r = specifier_printf(path, specifier_table, NULL, &i->path);
1140 log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
1145 n += strspn(buffer+n, WHITESPACE);
1146 if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) {
1147 i->argument = unquote(buffer+n, "\"");
1157 case CREATE_DIRECTORY:
1158 case TRUNCATE_DIRECTORY:
1161 case IGNORE_DIRECTORY_PATH:
1163 case RECURSIVE_REMOVE_PATH:
1166 case RECURSIVE_RELABEL_PATH:
1169 case CREATE_SYMLINK:
1171 log_error("[%s:%u] Symlink file requires argument.", fname, line);
1179 log_error("[%s:%u] Write file requires argument.", fname, line);
1186 log_error("[%s:%u] Copy files requires argument.", fname, line);
1190 if (!path_is_absolute(i->argument)) {
1191 log_error("[%s:%u] Source path is not absolute.", fname, line);
1195 path_kill_slashes(i->argument);
1198 case CREATE_CHAR_DEVICE:
1199 case CREATE_BLOCK_DEVICE: {
1200 unsigned major, minor;
1203 log_error("[%s:%u] Device file requires argument.", fname, line);
1207 if (sscanf(i->argument, "%u:%u", &major, &minor) != 2) {
1208 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i->argument);
1212 i->major_minor = makedev(major, minor);
1217 log_error("[%s:%u] Unknown file type '%c'.", fname, line, type);
1223 if (!path_is_absolute(i->path)) {
1224 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path);
1228 path_kill_slashes(i->path);
1230 if (!should_include_path(i->path))
1236 p = strappend(arg_root, i->path);
1244 if (user && !streq(user, "-")) {
1245 const char *u = user;
1247 r = get_user_creds(&u, &i->uid, NULL, NULL, NULL);
1249 log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
1256 if (group && !streq(group, "-")) {
1257 const char *g = group;
1259 r = get_group_creds(&g, &i->gid);
1261 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
1268 if (mode && !streq(mode, "-")) {
1269 const char *mm = mode;
1273 i->mask_perms = true;
1277 if (sscanf(mm, "%o", &m) != 1) {
1278 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
1286 i->type == CREATE_DIRECTORY ||
1287 i->type == TRUNCATE_DIRECTORY ? 0755 : 0644;
1289 if (age && !streq(age, "-")) {
1290 const char *a = age;
1293 i->keep_first_level = true;
1297 if (parse_sec(a, &i->age) < 0) {
1298 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
1305 h = needs_glob(i->type) ? globs : items;
1307 existing = hashmap_get(h, i->path);
1310 /* Two identical items are fine */
1311 if (!item_equal(existing, i))
1312 log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path);
1317 r = hashmap_put(h, i->path, i);
1319 log_error("Failed to insert item %s: %s", i->path, strerror(-r));
1323 i = NULL; /* avoid cleanup */
1328 static int help(void) {
1330 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
1331 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
1332 " -h --help Show this help\n"
1333 " --version Show package version\n"
1334 " --create Create marked files/directories\n"
1335 " --clean Clean up marked directories\n"
1336 " --remove Remove marked files/directories\n"
1337 " --boot Execute actions only safe at boot\n"
1338 " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n"
1339 " --exclude-prefix=PATH Ignore rules that apply to paths with the specified prefix\n"
1340 " --root=PATH Operate on an alternate filesystem root\n",
1341 program_invocation_short_name);
1346 static int parse_argv(int argc, char *argv[]) {
1349 ARG_VERSION = 0x100,
1359 static const struct option options[] = {
1360 { "help", no_argument, NULL, 'h' },
1361 { "version", no_argument, NULL, ARG_VERSION },
1362 { "create", no_argument, NULL, ARG_CREATE },
1363 { "clean", no_argument, NULL, ARG_CLEAN },
1364 { "remove", no_argument, NULL, ARG_REMOVE },
1365 { "boot", no_argument, NULL, ARG_BOOT },
1366 { "prefix", required_argument, NULL, ARG_PREFIX },
1367 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
1368 { "root", required_argument, NULL, ARG_ROOT },
1377 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
1385 puts(PACKAGE_STRING);
1386 puts(SYSTEMD_FEATURES);
1406 if (strv_push(&arg_include_prefixes, optarg) < 0)
1410 case ARG_EXCLUDE_PREFIX:
1411 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
1416 arg_root = path_make_absolute_cwd(optarg);
1419 path_kill_slashes(arg_root);
1426 assert_not_reached("Unhandled option");
1430 if (!arg_clean && !arg_create && !arg_remove) {
1431 log_error("You need to specify at least one of --clean, --create or --remove.");
1438 static int read_config_file(const char *fn, bool ignore_enoent) {
1439 _cleanup_fclose_ FILE *f = NULL;
1440 char line[LINE_MAX];
1448 r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f);
1450 if (ignore_enoent && r == -ENOENT)
1453 log_error("Failed to open '%s', ignoring: %s", fn, strerror(-r));
1457 FOREACH_LINE(line, f, break) {
1464 if (*l == '#' || *l == 0)
1467 k = parse_line(fn, v, l);
1468 if (k < 0 && r == 0)
1472 /* we have to determine age parameter for each entry of type X */
1473 HASHMAP_FOREACH(i, globs, iterator) {
1475 Item *j, *candidate_item = NULL;
1477 if (i->type != IGNORE_DIRECTORY_PATH)
1480 HASHMAP_FOREACH(j, items, iter) {
1481 if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY)
1484 if (path_equal(j->path, i->path)) {
1489 if ((!candidate_item && path_startswith(i->path, j->path)) ||
1490 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
1494 if (candidate_item) {
1495 i->age = candidate_item->age;
1501 log_error("Failed to read from file %s: %m", fn);
1509 int main(int argc, char *argv[]) {
1514 r = parse_argv(argc, argv);
1516 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1518 log_set_target(LOG_TARGET_AUTO);
1519 log_parse_environment();
1526 items = hashmap_new(string_hash_func, string_compare_func);
1527 globs = hashmap_new(string_hash_func, string_compare_func);
1529 if (!items || !globs) {
1536 if (optind < argc) {
1539 for (j = optind; j < argc; j++) {
1540 k = read_config_file(argv[j], false);
1541 if (k < 0 && r == 0)
1546 _cleanup_strv_free_ char **files = NULL;
1549 r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
1551 log_error("Failed to enumerate tmpfiles.d files: %s", strerror(-r));
1555 STRV_FOREACH(f, files) {
1556 k = read_config_file(*f, true);
1557 if (k < 0 && r == 0)
1562 HASHMAP_FOREACH(i, globs, iterator)
1565 HASHMAP_FOREACH(i, items, iterator)
1569 while ((i = hashmap_steal_first(items)))
1572 while ((i = hashmap_steal_first(globs)))
1575 hashmap_free(items);
1576 hashmap_free(globs);
1578 free(arg_include_prefixes);
1579 free(arg_exclude_prefixes);
1582 set_free_free(unix_sockets);
1586 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;