Fork of Original Code Base: anongit.freedesktop.org/systemd

This is the initial fork of the code base from freedsktop.org.
The code is provided here as a reference of the initial starting
point and for possible future checkouts after a large portion
of this code is removed.

Merge git://anongit.freedesktop.org/systemd/systemd

1 files changed, 1418 insertions, 0 deletions

diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
new file mode 100644
index 0000000000..c27d0112f9
--- /dev/null
+++ b/src/tmpfiles/tmpfiles.c
@@ -0,0 +1,1418 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering, Kay Sievers
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <limits.h>
+#include <dirent.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <glob.h>
+#include <fnmatch.h>
+#include <sys/capability.h>
+
+#include "log.h"
+#include "util.h"
+#include "macro.h"
+#include "mkdir.h"
+#include "path-util.h"
+#include "strv.h"
+#include "label.h"
+#include "set.h"
+#include "conf-files.h"
+#include "capability.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',
+        WRITE_FILE = 'w',
+        CREATE_DIRECTORY = 'd',
+        TRUNCATE_DIRECTORY = 'D',
+        CREATE_FIFO = 'p',
+        CREATE_SYMLINK = 'L',
+        CREATE_CHAR_DEVICE = 'c',
+        CREATE_BLOCK_DEVICE = 'b',
+
+        /* These ones take globs */
+        IGNORE_PATH = 'x',
+        REMOVE_PATH = 'r',
+        RECURSIVE_REMOVE_PATH = 'R',
+        RELABEL_PATH = 'z',
+        RECURSIVE_RELABEL_PATH = 'Z'
+} ItemType;
+
+typedef struct Item {
+        ItemType type;
+
+        char *path;
+        char *argument;
+        uid_t uid;
+        gid_t gid;
+        mode_t mode;
+        usec_t age;
+
+        dev_t major_minor;
+
+        bool uid_set:1;
+        bool gid_set:1;
+        bool mode_set:1;
+        bool age_set:1;
+
+        bool keep_first_level:1;
+} Item;
+
+static Hashmap *items = NULL, *globs = NULL;
+static Set *unix_sockets = NULL;
+
+static bool arg_create = false;
+static bool arg_clean = false;
+static bool arg_remove = false;
+
+static const char *arg_prefix = NULL;
+
+static const char * const conf_file_dirs[] = {
+        "/etc/tmpfiles.d",
+        "/run/tmpfiles.d",
+        "/usr/local/lib/tmpfiles.d",
+        "/usr/lib/tmpfiles.d",
+#ifdef HAVE_SPLIT_USR
+        "/lib/tmpfiles.d",
+#endif
+        NULL
+};
+
+#define MAX_DEPTH 256
+
+static bool needs_glob(ItemType t) {
+        return t == IGNORE_PATH || t == REMOVE_PATH || t == RECURSIVE_REMOVE_PATH || t == RELABEL_PATH || t == RECURSIVE_RELABEL_PATH;
+}
+
+static struct Item* find_glob(Hashmap *h, const char *match) {
+        Item *j;
+        Iterator i;
+
+        HASHMAP_FOREACH(j, h, i)
+                if (fnmatch(j->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
+                        return j;
+
+        return NULL;
+}
+
+static void load_unix_sockets(void) {
+        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_func, string_compare_func);
+        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_put(unix_sockets, s);
+                if (k < 0) {
+                        free(s);
+
+                        if (k != -EEXIST)
+                                goto fail;
+                }
+        }
+
+        fclose(f);
+        return;
+
+fail:
+        set_free_free(unix_sockets);
+        unix_sockets = NULL;
+
+        if (f)
+                fclose(f);
+}
+
+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_cleanup(
+                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;
+        char *sub_path = NULL;
+        int r = 0;
+
+        while ((dent = readdir(d))) {
+                struct stat s;
+                usec_t age;
+
+                if (streq(dent->d_name, ".") ||
+                    streq(dent->d_name, ".."))
+                        continue;
+
+                if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
+
+                        if (errno != ENOENT) {
+                                log_error("stat(%s/%s) failed: %m", p, dent->d_name);
+                                r = -errno;
+                        }
+
+                        continue;
+                }
+
+                /* Stay on the same filesystem */
+                if (s.st_dev != rootdev)
+                        continue;
+
+                /* Do not delete read-only files owned by root */
+                if (s.st_uid == 0 && !(s.st_mode & S_IWUSR))
+                        continue;
+
+                free(sub_path);
+                sub_path = NULL;
+
+                if (asprintf(&sub_path, "%s/%s", p, dent->d_name) < 0) {
+                        r = log_oom();
+                        goto finish;
+                }
+
+                /* Is there an item configured for this path? */
+                if (hashmap_get(items, sub_path))
+                        continue;
+
+                if (find_glob(globs, sub_path))
+                        continue;
+
+                if (S_ISDIR(s.st_mode)) {
+
+                        if (mountpoint &&
+                            streq(dent->d_name, "lost+found") &&
+                            s.st_uid == 0)
+                                continue;
+
+                        if (maxdepth <= 0)
+                                log_warning("Reached max depth on %s.", sub_path);
+                        else {
+                                DIR *sub_dir;
+                                int q;
+
+                                sub_dir = xopendirat(dirfd(d), dent->d_name, O_NOFOLLOW|O_NOATIME);
+                                if (sub_dir == NULL) {
+                                        if (errno != ENOENT) {
+                                                log_error("opendir(%s/%s) failed: %m", p, dent->d_name);
+                                                r = -errno;
+                                        }
+
+                                        continue;
+                                }
+
+                                q = dir_cleanup(sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
+                                closedir(sub_dir);
+
+                                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)
+                                continue;
+
+                        /* Ignore ctime, we change it when deleting */
+                        age = MAX(timespec_load(&s.st_mtim),
+                                  timespec_load(&s.st_atim));
+                        if (age >= cutoff)
+                                continue;
+
+                        log_debug("rmdir '%s'\n", sub_path);
+
+                        if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) {
+                                if (errno != ENOENT && errno != ENOTEMPTY) {
+                                        log_error("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)
+                                continue;
+
+                        if (mountpoint && S_ISREG(s.st_mode)) {
+                                if (streq(dent->d_name, ".journal") &&
+                                    s.st_uid == 0)
+                                        continue;
+
+                                if (streq(dent->d_name, "aquota.user") ||
+                                    streq(dent->d_name, "aquota.group"))
+                                        continue;
+                        }
+
+                        /* Ignore sockets that are listed in /proc/net/unix */
+                        if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path))
+                                continue;
+
+                        /* Ignore device nodes */
+                        if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode))
+                                continue;
+
+                        /* Keep files on this level around if this is
+                         * requested */
+                        if (keep_this_level)
+                                continue;
+
+                        age = MAX3(timespec_load(&s.st_mtim),
+                                   timespec_load(&s.st_atim),
+                                   timespec_load(&s.st_ctim));
+
+                        if (age >= cutoff)
+                                continue;
+
+                        log_debug("unlink '%s'\n", sub_path);
+
+                        if (unlinkat(dirfd(d), dent->d_name, 0) < 0) {
+                                if (errno != ENOENT) {
+                                        log_error("unlink(%s): %m", sub_path);
+                                        r = -errno;
+                                }
+                        }
+
+                        deleted = true;
+                }
+        }
+
+finish:
+        if (deleted) {
+                /* Restore original directory timestamps */
+                times[0] = ds->st_atim;
+                times[1] = ds->st_mtim;
+
+                if (futimens(dirfd(d), times) < 0)
+                        log_error("utimensat(%s): %m", p);
+        }
+
+        free(sub_path);
+
+        return r;
+}
+
+static int clean_item(Item *i) {
+        DIR *d;
+        struct stat s, ps;
+        bool mountpoint;
+        int r;
+        usec_t cutoff, n;
+
+        assert(i);
+
+        if (i->type != CREATE_DIRECTORY &&
+            i->type != TRUNCATE_DIRECTORY &&
+            i->type != IGNORE_PATH)
+                return 0;
+
+        if (!i->age_set)
+                return 0;
+
+        n = now(CLOCK_REALTIME);
+        if (n < i->age)
+                return 0;
+
+        cutoff = n - i->age;
+
+        d = opendir(i->path);
+        if (!d) {
+                if (errno == ENOENT)
+                        return 0;
+
+                log_error("Failed to open directory %s: %m", i->path);
+                return -errno;
+        }
+
+        if (fstat(dirfd(d), &s) < 0) {
+                log_error("stat(%s) failed: %m", i->path);
+                r = -errno;
+                goto finish;
+        }
+
+        if (!S_ISDIR(s.st_mode)) {
+                log_error("%s is not a directory.", i->path);
+                r = -ENOTDIR;
+                goto finish;
+        }
+
+        if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0) {
+                log_error("stat(%s/..) failed: %m", i->path);
+                r = -errno;
+                goto finish;
+        }
+
+        mountpoint = s.st_dev != ps.st_dev ||
+                     (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
+
+        r = dir_cleanup(i->path, d, &s, cutoff, s.st_dev, mountpoint, MAX_DEPTH, i->keep_first_level);
+
+finish:
+        if (d)
+                closedir(d);
+
+        return r;
+}
+
+static int item_set_perms(Item *i, const char *path) {
+        /* not using i->path directly because it may be a glob */
+        if (i->mode_set)
+                if (chmod(path, i->mode) < 0) {
+                        log_error("chmod(%s) failed: %m", path);
+                        return -errno;
+                }
+
+        if (i->uid_set || i->gid_set)
+                if (chown(path,
+                          i->uid_set ? i->uid : (uid_t) -1,
+                          i->gid_set ? i->gid : (gid_t) -1) < 0) {
+
+                        log_error("chown(%s) failed: %m", path);
+                        return -errno;
+                }
+
+        return label_fix(path, false, false);
+}
+
+static int write_one_file(Item *i, const char *path) {
+        int r, e, fd, flags;
+        struct stat st;
+        mode_t u;
+
+        flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND :
+                i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC : 0;
+
+        u = umask(0);
+        label_context_set(path, S_IFREG);
+        fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY|O_NOFOLLOW, i->mode);
+        e = errno;
+        label_context_clear();
+        umask(u);
+        errno = e;
+
+        if (fd < 0) {
+                if (i->type == WRITE_FILE && errno == ENOENT)
+                        return 0;
+
+                log_error("Failed to create file %s: %m", path);
+                return -errno;
+        }
+
+        if (i->argument) {
+                ssize_t n;
+                size_t l;
+                _cleanup_free_ char *unescaped;
+
+                unescaped = cunescape(i->argument);
+                if (unescaped == NULL)
+                        return log_oom();
+
+                l = strlen(unescaped);
+                n = write(fd, unescaped, l);
+
+                if (n < 0 || (size_t) n < l) {
+                        log_error("Failed to write file %s: %s", path, n < 0 ? strerror(-n) : "Short write");
+                        close_nointr_nofail(fd);
+                        return n < 0 ? n : -EIO;
+                }
+        }
+
+        close_nointr_nofail(fd);
+
+        if (stat(path, &st) < 0) {
+                log_error("stat(%s) failed: %m", path);
+                return -errno;
+        }
+
+        if (!S_ISREG(st.st_mode)) {
+                log_error("%s is not a file.", path);
+                return -EEXIST;
+        }
+
+        r = item_set_perms(i, path);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static int recursive_relabel_children(Item *i, const char *path) {
+        DIR *d;
+        int ret = 0;
+
+        /* This returns the first error we run into, but nevertheless
+         * tries to go on */
+
+        d = opendir(path);
+        if (!d)
+                return errno == ENOENT ? 0 : -errno;
+
+        for (;;) {
+                struct dirent *de;
+                union dirent_storage buf;
+                bool is_dir;
+                int r;
+                char *entry_path;
+
+                r = readdir_r(d, &buf.de, &de);
+                if (r != 0) {
+                        if (ret == 0)
+                                ret = -r;
+                        break;
+                }
+
+                if (!de)
+                        break;
+
+                if (streq(de->d_name, ".") || streq(de->d_name, ".."))
+                        continue;
+
+                if (asprintf(&entry_path, "%s/%s", path, de->d_name) < 0) {
+                        if (ret == 0)
+                                ret = -ENOMEM;
+                        continue;
+                }
+
+                if (de->d_type == DT_UNKNOWN) {
+                        struct stat st;
+
+                        if (lstat(entry_path, &st) < 0) {
+                                if (ret == 0 && errno != ENOENT)
+                                        ret = -errno;
+                                free(entry_path);
+                                continue;
+                        }
+
+                        is_dir = S_ISDIR(st.st_mode);
+
+                } else
+                        is_dir = de->d_type == DT_DIR;
+
+                r = item_set_perms(i, entry_path);
+                if (r < 0) {
+                        if (ret == 0 && r != -ENOENT)
+                                ret = r;
+                        free(entry_path);
+                        continue;
+                }
+
+                if (is_dir) {
+                        r = recursive_relabel_children(i, entry_path);
+                        if (r < 0 && ret == 0)
+                                ret = r;
+                }
+
+                free(entry_path);
+        }
+
+        closedir(d);
+
+        return ret;
+}
+
+static int recursive_relabel(Item *i, const char *path) {
+        int r;
+        struct stat st;
+
+        r = item_set_perms(i, path);
+        if (r < 0)
+                return r;
+
+        if (lstat(path, &st) < 0)
+                return -errno;
+
+        if (S_ISDIR(st.st_mode))
+                r = recursive_relabel_children(i, path);
+
+        return r;
+}
+
+static int glob_item(Item *i, int (*action)(Item *, const char *)) {
+        int r = 0, k;
+        glob_t g;
+        char **fn;
+
+        zero(g);
+
+        errno = 0;
+        if ((k = glob(i->path, GLOB_NOSORT|GLOB_BRACE, NULL, &g)) != 0) {
+
+                if (k != GLOB_NOMATCH) {
+                        if (errno != 0)
+                                errno = EIO;
+
+                        log_error("glob(%s) failed: %m", i->path);
+                        return -errno;
+                }
+        }
+
+        STRV_FOREACH(fn, g.gl_pathv)
+                if ((k = action(i, *fn)) < 0)
+                        r = k;
+
+        globfree(&g);
+        return r;
+}
+
+static int create_item(Item *i) {
+        int r, e;
+        mode_t u;
+        struct stat st;
+
+        assert(i);
+
+        switch (i->type) {
+
+        case IGNORE_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 WRITE_FILE:
+                r = glob_item(i, write_one_file);
+                if (r < 0)
+                        return r;
+
+                break;
+
+        case TRUNCATE_DIRECTORY:
+        case CREATE_DIRECTORY:
+
+                u = umask(0);
+                mkdir_parents_label(i->path, 0755);
+                r = mkdir(i->path, i->mode);
+                umask(u);
+
+                if (r < 0 && errno != EEXIST) {
+                        log_error("Failed to create directory %s: %m", i->path);
+                        return -errno;
+                }
+
+                if (stat(i->path, &st) < 0) {
+                        log_error("stat(%s) failed: %m", i->path);
+                        return -errno;
+                }
+
+                if (!S_ISDIR(st.st_mode)) {
+                        log_error("%s is not a directory.", i->path);
+                        return -EEXIST;
+                }
+
+                r = item_set_perms(i, i->path);
+                if (r < 0)
+                        return r;
+
+                break;
+
+        case CREATE_FIFO:
+
+                u = umask(0);
+                r = mkfifo(i->path, i->mode);
+                umask(u);
+
+                if (r < 0 && errno != EEXIST) {
+                        log_error("Failed to create fifo %s: %m", i->path);
+                        return -errno;
+                }
+
+                if (stat(i->path, &st) < 0) {
+                        log_error("stat(%s) failed: %m", i->path);
+                        return -errno;
+                }
+
+                if (!S_ISFIFO(st.st_mode)) {
+                        log_error("%s is not a fifo.", i->path);
+                        return -EEXIST;
+                }
+
+                r = item_set_perms(i, i->path);
+                if (r < 0)
+                        return r;
+
+                break;
+
+        case CREATE_SYMLINK: {
+                char *x;
+
+                label_context_set(i->path, S_IFLNK);
+                r = symlink(i->argument, i->path);
+                e = errno;
+                label_context_clear();
+                errno = e;
+
+                if (r < 0 && errno != EEXIST) {
+                        log_error("symlink(%s, %s) failed: %m", i->argument, i->path);
+                        return -errno;
+                }
+
+                r = readlink_malloc(i->path, &x);
+                if (r < 0) {
+                        log_error("readlink(%s) failed: %s", i->path, strerror(-r));
+                        return -errno;
+                }
+
+                if (!streq(i->argument, x)) {
+                        free(x);
+                        log_error("%s is not the right symlinks.", i->path);
+                        return -EEXIST;
+                }
+
+                free(x);
+                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
+                        shouldnt 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);
+
+                u = umask(0);
+                label_context_set(i->path, file_type);
+                r = mknod(i->path, i->mode | file_type, i->major_minor);
+                e = errno;
+                label_context_clear();
+                umask(u);
+                errno = e;
+
+                if (r < 0 && errno != EEXIST) {
+                        log_error("Failed to create device node %s: %m", i->path);
+                        return -errno;
+                }
+
+                if (stat(i->path, &st) < 0) {
+                        log_error("stat(%s) failed: %m", i->path);
+                        return -errno;
+                }
+
+                if ((st.st_mode & S_IFMT) != file_type) {
+                        log_error("%s is not a device node.", i->path);
+                        return -EEXIST;
+                }
+
+                r = item_set_perms(i, i->path);
+                if (r < 0)
+                        return r;
+
+                break;
+        }
+
+        case RELABEL_PATH:
+
+                r = glob_item(i, item_set_perms);
+                if (r < 0)
+                        return 0;
+                break;
+
+        case RECURSIVE_RELABEL_PATH:
+
+                r = glob_item(i, recursive_relabel);
+                if (r < 0)
+                        return r;
+        }
+
+        log_debug("%s created successfully.", i->path);
+
+        return 0;
+}
+
+static int remove_item_instance(Item *i, const char *instance) {
+        int r;
+
+        assert(i);
+
+        switch (i->type) {
+
+        case CREATE_FILE:
+        case TRUNCATE_FILE:
+        case CREATE_DIRECTORY:
+        case CREATE_FIFO:
+        case CREATE_SYMLINK:
+        case CREATE_BLOCK_DEVICE:
+        case CREATE_CHAR_DEVICE:
+        case IGNORE_PATH:
+        case RELABEL_PATH:
+        case RECURSIVE_RELABEL_PATH:
+        case WRITE_FILE:
+                break;
+
+        case REMOVE_PATH:
+                if (remove(instance) < 0 && errno != ENOENT) {
+                        log_error("remove(%s): %m", instance);
+                        return -errno;
+                }
+
+                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. */
+                r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false);
+                if (r < 0 && r != -ENOENT) {
+                        log_error("rm_rf(%s): %s", instance, strerror(-r));
+                        return r;
+                }
+
+                break;
+        }
+
+        return 0;
+}
+
+static int remove_item(Item *i) {
+        int r = 0;
+
+        assert(i);
+
+        switch (i->type) {
+
+        case CREATE_FILE:
+        case TRUNCATE_FILE:
+        case CREATE_DIRECTORY:
+        case CREATE_FIFO:
+        case CREATE_SYMLINK:
+        case CREATE_CHAR_DEVICE:
+        case CREATE_BLOCK_DEVICE:
+        case IGNORE_PATH:
+        case RELABEL_PATH:
+        case RECURSIVE_RELABEL_PATH:
+        case WRITE_FILE:
+                break;
+
+        case REMOVE_PATH:
+        case TRUNCATE_DIRECTORY:
+        case RECURSIVE_REMOVE_PATH:
+                r = glob_item(i, remove_item_instance);
+                break;
+        }
+
+        return r;
+}
+
+static int process_item(Item *i) {
+        int r, q, p;
+
+        assert(i);
+
+        r = arg_create ? create_item(i) : 0;
+        q = arg_remove ? remove_item(i) : 0;
+        p = arg_clean ? clean_item(i) : 0;
+
+        if (r < 0)
+                return r;
+
+        if (q < 0)
+                return q;
+
+        return p;
+}
+
+static void item_free(Item *i) {
+        assert(i);
+
+        free(i->path);
+        free(i->argument);
+        free(i);
+}
+
+static bool item_equal(Item *a, Item *b) {
+        assert(a);
+        assert(b);
+
+        if (!streq_ptr(a->path, b->path))
+                return false;
+
+        if (a->type != b->type)
+                return false;
+
+        if (a->uid_set != b->uid_set ||
+            (a->uid_set && a->uid != b->uid))
+            return false;
+
+        if (a->gid_set != b->gid_set ||
+            (a->gid_set && a->gid != b->gid))
+            return false;
+
+        if (a->mode_set != b->mode_set ||
+            (a->mode_set && a->mode != b->mode))
+            return false;
+
+        if (a->age_set != b->age_set ||
+            (a->age_set && a->age != b->age))
+            return false;
+
+        if ((a->type == CREATE_FILE ||
+             a->type == TRUNCATE_FILE ||
+             a->type == WRITE_FILE ||
+             a->type == CREATE_SYMLINK) &&
+            !streq_ptr(a->argument, b->argument))
+                return false;
+
+        if ((a->type == CREATE_CHAR_DEVICE ||
+             a->type == CREATE_BLOCK_DEVICE) &&
+            a->major_minor != b->major_minor)
+                return false;
+
+        return true;
+}
+
+static int parse_line(const char *fname, unsigned line, const char *buffer) {
+        Item *i, *existing;
+        char *mode = NULL, *user = NULL, *group = NULL, *age = NULL;
+        char type;
+        Hashmap *h;
+        int r, n = -1;
+
+        assert(fname);
+        assert(line >= 1);
+        assert(buffer);
+
+        i = new0(Item, 1);
+        if (!i)
+                return log_oom();
+
+        if (sscanf(buffer,
+                   "%c "
+                   "%ms "
+                   "%ms "
+                   "%ms "
+                   "%ms "
+                   "%ms "
+                   "%n",
+                   &type,
+                   &i->path,
+                   &mode,
+                   &user,
+                   &group,
+                   &age,
+                   &n) < 2) {
+                log_error("[%s:%u] Syntax error.", fname, line);
+                r = -EIO;
+                goto finish;
+        }
+
+        if (n >= 0)  {
+                n += strspn(buffer+n, WHITESPACE);
+                if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) {
+                        i->argument = unquote(buffer+n, "\"");
+                        if (!i->argument)
+                                return log_oom();
+                }
+        }
+
+        switch(type) {
+
+        case CREATE_FILE:
+        case TRUNCATE_FILE:
+        case CREATE_DIRECTORY:
+        case TRUNCATE_DIRECTORY:
+        case CREATE_FIFO:
+        case IGNORE_PATH:
+        case REMOVE_PATH:
+        case RECURSIVE_REMOVE_PATH:
+        case RELABEL_PATH:
+        case RECURSIVE_RELABEL_PATH:
+                break;
+
+        case CREATE_SYMLINK:
+                if (!i->argument) {
+                        log_error("[%s:%u] Symlink file requires argument.", fname, line);
+                        r = -EBADMSG;
+                        goto finish;
+                }
+                break;
+
+        case WRITE_FILE:
+                if (!i->argument) {
+                        log_error("[%s:%u] Write file requires argument.", fname, line);
+                        r = -EBADMSG;
+                        goto finish;
+                }
+                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);
+                        r = -EBADMSG;
+                        goto finish;
+                }
+
+                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);
+                        r = -EBADMSG;
+                        goto finish;
+                }
+
+                i->major_minor = makedev(major, minor);
+                break;
+        }
+
+        default:
+                log_error("[%s:%u] Unknown file type '%c'.", fname, line, type);
+                r = -EBADMSG;
+                goto finish;
+        }
+
+        i->type = type;
+
+        if (!path_is_absolute(i->path)) {
+                log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path);
+                r = -EBADMSG;
+                goto finish;
+        }
+
+        path_kill_slashes(i->path);
+
+        if (arg_prefix && !path_startswith(i->path, arg_prefix)) {
+                r = 0;
+                goto finish;
+        }
+
+        if (user && !streq(user, "-")) {
+                const char *u = user;
+
+                r = get_user_creds(&u, &i->uid, NULL, NULL, NULL);
+                if (r < 0) {
+                        log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
+                        goto finish;
+                }
+
+                i->uid_set = true;
+        }
+
+        if (group && !streq(group, "-")) {
+                const char *g = group;
+
+                r = get_group_creds(&g, &i->gid);
+                if (r < 0) {
+                        log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
+                        goto finish;
+                }
+
+                i->gid_set = true;
+        }
+
+        if (mode && !streq(mode, "-")) {
+                unsigned m;
+
+                if (sscanf(mode, "%o", &m) != 1) {
+                        log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
+                        r = -ENOENT;
+                        goto finish;
+                }
+
+                i->mode = m;
+                i->mode_set = true;
+        } else
+                i->mode =
+                        i->type == CREATE_DIRECTORY ||
+                        i->type == TRUNCATE_DIRECTORY ? 0755 : 0644;
+
+        if (age && !streq(age, "-")) {
+                const char *a = age;
+
+                if (*a == '~') {
+                        i->keep_first_level = true;
+                        a++;
+                }
+
+                if (parse_usec(a, &i->age) < 0) {
+                        log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
+                        r = -EBADMSG;
+                        goto finish;
+                }
+
+                i->age_set = true;
+        }
+
+        h = needs_glob(i->type) ? globs : items;
+
+        existing = hashmap_get(h, i->path);
+        if (existing) {
+
+                /* Two identical items are fine */
+                if (!item_equal(existing, i))
+                        log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path);
+
+                r = 0;
+                goto finish;
+        }
+
+        r = hashmap_put(h, i->path, i);
+        if (r < 0) {
+                log_error("Failed to insert item %s: %s", i->path, strerror(-r));
+                goto finish;
+        }
+
+        i = NULL;
+        r = 0;
+
+finish:
+        free(user);
+        free(group);
+        free(mode);
+        free(age);
+
+        if (i)
+                item_free(i);
+
+        return r;
+}
+
+static int 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"
+               "     --create           Create marked files/directories\n"
+               "     --clean            Clean up marked directories\n"
+               "     --remove           Remove marked files/directories\n"
+               "     --prefix=PATH      Only apply rules that apply to paths with the specified prefix\n",
+               program_invocation_short_name);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_CREATE,
+                ARG_CLEAN,
+                ARG_REMOVE,
+                ARG_PREFIX
+        };
+
+        static const struct option options[] = {
+                { "help",      no_argument,       NULL, 'h'           },
+                { "create",    no_argument,       NULL, ARG_CREATE    },
+                { "clean",     no_argument,       NULL, ARG_CLEAN     },
+                { "remove",    no_argument,       NULL, ARG_REMOVE    },
+                { "prefix",    required_argument, NULL, ARG_PREFIX    },
+                { NULL,        0,                 NULL, 0             }
+        };
+
+        int c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+
+                switch (c) {
+
+                case 'h':
+                        help();
+                        return 0;
+
+                case ARG_CREATE:
+                        arg_create = true;
+                        break;
+
+                case ARG_CLEAN:
+                        arg_clean = true;
+                        break;
+
+                case ARG_REMOVE:
+                        arg_remove = true;
+                        break;
+
+                case ARG_PREFIX:
+                        arg_prefix = optarg;
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        log_error("Unknown option code %c", c);
+                        return -EINVAL;
+                }
+        }
+
+        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) {
+        FILE *f;
+        unsigned v = 0;
+        int r = 0;
+
+        assert(fn);
+
+        f = fopen(fn, "re");
+        if (!f) {
+
+                if (ignore_enoent && errno == ENOENT)
+                        return 0;
+
+                log_error("Failed to open %s: %m", fn);
+                return -errno;
+        }
+
+        log_debug("apply: %s\n", fn);
+        for (;;) {
+                char line[LINE_MAX], *l;
+                int k;
+
+                if (!(fgets(line, sizeof(line), f)))
+                        break;
+
+                v++;
+
+                l = strstrip(line);
+                if (*l == '#' || *l == 0)
+                        continue;
+
+                if ((k = parse_line(fn, v, l)) < 0)
+                        if (r == 0)
+                                r = k;
+        }
+
+        if (ferror(f)) {
+                log_error("Failed to read from file %s: %m", fn);
+                if (r == 0)
+                        r = -EIO;
+        }
+
+        fclose(f);
+
+        return r;
+}
+
+static char *resolve_fragment(const char *fragment, const char **search_paths) {
+        const char **p;
+        char *resolved_path;
+
+        if (is_path(fragment))
+                return strdup(fragment);
+
+        STRV_FOREACH(p, search_paths) {
+                resolved_path = strjoin(*p, "/", fragment, NULL);
+                if (resolved_path == NULL) {
+                        log_oom();
+                        return NULL;
+                }
+
+                if (access(resolved_path, F_OK) == 0)
+                        return resolved_path;
+
+                free(resolved_path);
+        }
+
+        errno = ENOENT;
+        return NULL;
+}
+
+int main(int argc, char *argv[]) {
+        int r;
+        Item *i;
+        Iterator iterator;
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+
+        log_set_target(LOG_TARGET_AUTO);
+        log_parse_environment();
+        log_open();
+
+        umask(0022);
+
+        label_init(NULL);
+
+        items = hashmap_new(string_hash_func, string_compare_func);
+        globs = hashmap_new(string_hash_func, string_compare_func);
+
+        if (!items || !globs) {
+                log_oom();
+                r = EXIT_FAILURE;
+                goto finish;
+        }
+
+        r = EXIT_SUCCESS;
+
+        if (optind < argc) {
+                int j;
+
+                for (j = optind; j < argc; j++) {
+                        char *fragment;
+
+                        fragment = resolve_fragment(argv[j], (const char **)conf_file_dirs);
+                        if (!fragment) {
+                                log_error("Failed to find a %s file: %m", argv[j]);
+                                r = EXIT_FAILURE;
+                                goto finish;
+                        }
+                        if (read_config_file(fragment, false) < 0)
+                                r = EXIT_FAILURE;
+                        free(fragment);
+                }
+
+        } else {
+                char **files, **f;
+
+                r = conf_files_list_strv(&files, ".conf", (const char **)conf_file_dirs);
+                if (r < 0) {
+                        log_error("Failed to enumerate tmpfiles.d files: %s", strerror(-r));
+                        r = EXIT_FAILURE;
+                        goto finish;
+                }
+
+                STRV_FOREACH(f, files) {
+                        if (read_config_file(*f, true) < 0)
+                                r = EXIT_FAILURE;
+                }
+
+                strv_free(files);
+        }
+
+        HASHMAP_FOREACH(i, globs, iterator)
+                process_item(i);
+
+        HASHMAP_FOREACH(i, items, iterator)
+                process_item(i);
+
+finish:
+        while ((i = hashmap_steal_first(items)))
+                item_free(i);
+
+        while ((i = hashmap_steal_first(globs)))
+                item_free(i);
+
+        hashmap_free(items);
+        hashmap_free(globs);
+
+        set_free_free(unix_sockets);
+
+        label_finish();
+
+        return r;
+}