+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering, Kay Sievers
- Copyright 2015 Zbigniew Jędrzejewski-Szmek
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <limits.h>
-#include <dirent.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <getopt.h>
-#include <stdbool.h>
-#include <time.h>
-#include <glob.h>
-#include <fnmatch.h>
-#include <sys/stat.h>
-#include <sys/xattr.h>
-#include <linux/fs.h>
-
-#include "log.h"
-#include "util.h"
-#include "macro.h"
-#include "missing.h"
-#include "mkdir.h"
-#include "path-util.h"
-#include "strv.h"
-#include "label.h"
-#include "set.h"
-#include "conf-files.h"
-#include "capability.h"
-#include "specifier.h"
-#include "build.h"
-#include "copy.h"
-#include "selinux-util.h"
-#include "btrfs-util.h"
-#include "acl-util.h"
-
-/* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
- * them in the file system. This is intended to be used to create
- * properly owned directories beneath /tmp, /var/tmp, /run, which are
- * volatile and hence need to be recreated on bootup. */
-
-typedef enum ItemType {
- /* These ones take file names */
- CREATE_FILE = 'f',
- TRUNCATE_FILE = 'F',
- CREATE_DIRECTORY = 'd',
- TRUNCATE_DIRECTORY = 'D',
- CREATE_SUBVOLUME = 'v',
- CREATE_FIFO = 'p',
- CREATE_SYMLINK = 'L',
- CREATE_CHAR_DEVICE = 'c',
- CREATE_BLOCK_DEVICE = 'b',
- COPY_FILES = 'C',
-
- /* These ones take globs */
- SET_XATTR = 't',
- RECURSIVE_SET_XATTR = 'T',
- SET_ACL = 'a',
- RECURSIVE_SET_ACL = 'A',
- WRITE_FILE = 'w',
- IGNORE_PATH = 'x',
- IGNORE_DIRECTORY_PATH = 'X',
- REMOVE_PATH = 'r',
- RECURSIVE_REMOVE_PATH = 'R',
- ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */
- RELABEL_PATH = 'z',
- RECURSIVE_RELABEL_PATH = 'Z',
- SET_ATTRIB = 'h',
- RECURSIVE_SET_ATTRIB = 'H',
-} ItemType;
-
-typedef struct Item {
- ItemType type;
-
- char *path;
- char *argument;
- char **xattrs;
-#ifdef HAVE_ACL
- acl_t acl_access;
- acl_t acl_default;
-#endif
- uid_t uid;
- gid_t gid;
- mode_t mode;
- usec_t age;
-
- dev_t major_minor;
- unsigned long attrib_value;
- unsigned long attrib_mask;
-
- bool uid_set:1;
- bool gid_set:1;
- bool mode_set:1;
- bool age_set:1;
- bool mask_perms:1;
- bool attrib_set:1;
-
- bool keep_first_level:1;
-
- bool force:1;
-
- bool done:1;
-} Item;
-
-typedef struct ItemArray {
- Item *items;
- size_t count;
- size_t size;
-} ItemArray;
-
-static bool arg_create = false;
-static bool arg_clean = false;
-static bool arg_remove = false;
-static bool arg_boot = false;
-
-static char **arg_include_prefixes = NULL;
-static char **arg_exclude_prefixes = NULL;
-static char *arg_root = NULL;
-
-static const char conf_file_dirs[] = CONF_DIRS_NULSTR("tmpfiles");
-
-#define MAX_DEPTH 256
-
-static Hashmap *items = NULL, *globs = NULL;
-static Set *unix_sockets = NULL;
-
-static bool needs_glob(ItemType t) {
- return IN_SET(t,
- WRITE_FILE,
- IGNORE_PATH,
- IGNORE_DIRECTORY_PATH,
- REMOVE_PATH,
- RECURSIVE_REMOVE_PATH,
- ADJUST_MODE,
- RELABEL_PATH,
- RECURSIVE_RELABEL_PATH,
- SET_XATTR,
- RECURSIVE_SET_XATTR,
- SET_ACL,
- RECURSIVE_SET_ACL);
-}
-
-static bool takes_ownership(ItemType t) {
- return IN_SET(t,
- CREATE_FILE,
- TRUNCATE_FILE,
- CREATE_DIRECTORY,
- TRUNCATE_DIRECTORY,
- CREATE_SUBVOLUME,
- CREATE_FIFO,
- CREATE_SYMLINK,
- CREATE_CHAR_DEVICE,
- CREATE_BLOCK_DEVICE,
- COPY_FILES,
- WRITE_FILE,
- IGNORE_PATH,
- IGNORE_DIRECTORY_PATH,
- REMOVE_PATH,
- RECURSIVE_REMOVE_PATH);
-}
-
-static struct Item* find_glob(Hashmap *h, const char *match) {
- ItemArray *j;
- Iterator i;
-
- HASHMAP_FOREACH(j, h, i) {
- unsigned n;
-
- for (n = 0; n < j->count; n++) {
- Item *item = j->items + n;
-
- if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
- return item;
- }
- }
-
- return NULL;
-}
-
-static void load_unix_sockets(void) {
- _cleanup_fclose_ FILE *f = NULL;
- char line[LINE_MAX];
-
- if (unix_sockets)
- return;
-
- /* We maintain a cache of the sockets we found in
- * /proc/net/unix to speed things up a little. */
-
- unix_sockets = set_new(&string_hash_ops);
- if (!unix_sockets)
- return;
-
- f = fopen("/proc/net/unix", "re");
- if (!f)
- return;
-
- /* Skip header */
- if (!fgets(line, sizeof(line), f))
- goto fail;
-
- for (;;) {
- char *p, *s;
- int k;
-
- if (!fgets(line, sizeof(line), f))
- break;
-
- truncate_nl(line);
-
- p = strchr(line, ':');
- if (!p)
- continue;
-
- if (strlen(p) < 37)
- continue;
-
- p += 37;
- p += strspn(p, WHITESPACE);
- p += strcspn(p, WHITESPACE); /* skip one more word */
- p += strspn(p, WHITESPACE);
-
- if (*p != '/')
- continue;
-
- s = strdup(p);
- if (!s)
- goto fail;
-
- path_kill_slashes(s);
-
- k = set_consume(unix_sockets, s);
- if (k < 0 && k != -EEXIST)
- goto fail;
- }
-
- return;
-
-fail:
- set_free_free(unix_sockets);
- unix_sockets = NULL;
-}
-
-static bool unix_socket_alive(const char *fn) {
- assert(fn);
-
- load_unix_sockets();
-
- if (unix_sockets)
- return !!set_get(unix_sockets, (char*) fn);
-
- /* We don't know, so assume yes */
- return true;
-}
-
-static int dir_is_mount_point(DIR *d, const char *subdir) {
-
- union file_handle_union h = FILE_HANDLE_INIT;
- int mount_id_parent, mount_id;
- int r_p, r;
-
- r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0);
- if (r_p < 0)
- r_p = -errno;
-
- h.handle.handle_bytes = MAX_HANDLE_SZ;
- r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0);
- if (r < 0)
- r = -errno;
-
- /* got no handle; make no assumptions, return error */
- if (r_p < 0 && r < 0)
- return r_p;
-
- /* got both handles; if they differ, it is a mount point */
- if (r_p >= 0 && r >= 0)
- return mount_id_parent != mount_id;
-
- /* got only one handle; assume different mount points if one
- * of both queries was not supported by the filesystem */
- if (r_p == -ENOSYS || r_p == -EOPNOTSUPP || r == -ENOSYS || r == -EOPNOTSUPP)
- return true;
-
- /* return error */
- if (r_p < 0)
- return r_p;
- return r;
-}
-
-static DIR* xopendirat_nomod(int dirfd, const char *path) {
- DIR *dir;
-
- dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME);
- if (dir)
- return dir;
-
- log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
- if (errno != EPERM)
- return NULL;
-
- dir = xopendirat(dirfd, path, O_NOFOLLOW);
- if (!dir)
- log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
-
- return dir;
-}
-
-static DIR* opendir_nomod(const char *path) {
- return xopendirat_nomod(AT_FDCWD, path);
-}
-
-static int dir_cleanup(
- Item *i,
- const char *p,
- DIR *d,
- const struct stat *ds,
- usec_t cutoff,
- dev_t rootdev,
- bool mountpoint,
- int maxdepth,
- bool keep_this_level) {
-
- struct dirent *dent;
- struct timespec times[2];
- bool deleted = false;
- int r = 0;
-
- while ((dent = readdir(d))) {
- struct stat s;
- usec_t age;
- _cleanup_free_ char *sub_path = NULL;
-
- if (STR_IN_SET(dent->d_name, ".", ".."))
- continue;
-
- if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
- if (errno == ENOENT)
- continue;
-
- /* FUSE, NFS mounts, SELinux might return EACCES */
- if (errno == EACCES)
- log_debug_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
- else
- log_error_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
- r = -errno;
- continue;
- }
-
- /* Stay on the same filesystem */
- if (s.st_dev != rootdev) {
- log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name);
- continue;
- }
-
- /* Try to detect bind mounts of the same filesystem instance; they
- * do not differ in device major/minors. This type of query is not
- * supported on all kernels or filesystem types though. */
- if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) {
- log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
- p, dent->d_name);
- continue;
- }
-
- /* Do not delete read-only files owned by root */
- if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) {
- log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p, dent->d_name);
- continue;
- }
-
- sub_path = strjoin(p, "/", dent->d_name, NULL);
- if (!sub_path) {
- r = log_oom();
- goto finish;
- }
-
- /* Is there an item configured for this path? */
- if (hashmap_get(items, sub_path)) {
- log_debug("Ignoring \"%s\": a separate entry exists.", sub_path);
- continue;
- }
-
- if (find_glob(globs, sub_path)) {
- log_debug("Ignoring \"%s\": a separate glob exists.", sub_path);
- continue;
- }
-
- if (S_ISDIR(s.st_mode)) {
-
- if (mountpoint &&
- streq(dent->d_name, "lost+found") &&
- s.st_uid == 0) {
- log_debug("Ignoring \"%s\".", sub_path);
- continue;
- }
-
- if (maxdepth <= 0)
- log_warning("Reached max depth on \"%s\".", sub_path);
- else {
- _cleanup_closedir_ DIR *sub_dir;
- int q;
-
- sub_dir = xopendirat_nomod(dirfd(d), dent->d_name);
- if (!sub_dir) {
- if (errno != ENOENT)
- r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path);
-
- continue;
- }
-
- q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
- if (q < 0)
- r = q;
- }
-
- /* Note: if you are wondering why we don't
- * support the sticky bit for excluding
- * directories from cleaning like we do it for
- * other file system objects: well, the sticky
- * bit already has a meaning for directories,
- * so we don't want to overload that. */
-
- if (keep_this_level) {
- log_debug("Keeping \"%s\".", sub_path);
- continue;
- }
-
- /* Ignore ctime, we change it when deleting */
- age = timespec_load(&s.st_mtim);
- if (age >= cutoff) {
- char a[FORMAT_TIMESTAMP_MAX];
- /* Follows spelling in stat(1). */
- log_debug("Directory \"%s\": modify time %s is too new.",
- sub_path,
- format_timestamp_us(a, sizeof(a), age));
- continue;
- }
-
- age = timespec_load(&s.st_atim);
- if (age >= cutoff) {
- char a[FORMAT_TIMESTAMP_MAX];
- log_debug("Directory \"%s\": access time %s is too new.",
- sub_path,
- format_timestamp_us(a, sizeof(a), age));
- continue;
- }
-
- log_debug("Removing directory \"%s\".", sub_path);
- if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0)
- if (errno != ENOENT && errno != ENOTEMPTY) {
- log_error_errno(errno, "rmdir(%s): %m", sub_path);
- r = -errno;
- }
-
- } else {
- /* Skip files for which the sticky bit is
- * set. These are semantics we define, and are
- * unknown elsewhere. See XDG_RUNTIME_DIR
- * specification for details. */
- if (s.st_mode & S_ISVTX) {
- log_debug("Skipping \"%s\": sticky bit set.", sub_path);
- continue;
- }
-
- if (mountpoint && S_ISREG(s.st_mode))
- if ((streq(dent->d_name, ".journal") && s.st_uid == 0) ||
- streq(dent->d_name, "aquota.user") ||
- streq(dent->d_name, "aquota.group")) {
- log_debug("Skipping \"%s\".", sub_path);
- continue;
- }
-
- /* Ignore sockets that are listed in /proc/net/unix */
- if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) {
- log_debug("Skipping \"%s\": live socket.", sub_path);
- continue;
- }
-
- /* Ignore device nodes */
- if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) {
- log_debug("Skipping \"%s\": a device.", sub_path);
- continue;
- }
-
- /* Keep files on this level around if this is
- * requested */
- if (keep_this_level) {
- log_debug("Keeping \"%s\".", sub_path);
- continue;
- }
-
- age = timespec_load(&s.st_mtim);
- if (age >= cutoff) {
- char a[FORMAT_TIMESTAMP_MAX];
- /* Follows spelling in stat(1). */
- log_debug("File \"%s\": modify time %s is too new.",
- sub_path,
- format_timestamp_us(a, sizeof(a), age));
- continue;
- }
-
- age = timespec_load(&s.st_atim);
- if (age >= cutoff) {
- char a[FORMAT_TIMESTAMP_MAX];
- log_debug("File \"%s\": access time %s is too new.",
- sub_path,
- format_timestamp_us(a, sizeof(a), age));
- continue;
- }
-
- age = timespec_load(&s.st_ctim);
- if (age >= cutoff) {
- char a[FORMAT_TIMESTAMP_MAX];
- log_debug("File \"%s\": change time %s is too new.",
- sub_path,
- format_timestamp_us(a, sizeof(a), age));
- continue;
- }
-
- log_debug("unlink \"%s\"", sub_path);
-
- if (unlinkat(dirfd(d), dent->d_name, 0) < 0)
- if (errno != ENOENT)
- r = log_error_errno(errno, "unlink(%s): %m", sub_path);
-
- deleted = true;
- }
- }
-
-finish:
- if (deleted) {
- usec_t age1, age2;
- char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
-
- /* Restore original directory timestamps */
- times[0] = ds->st_atim;
- times[1] = ds->st_mtim;
-
- age1 = timespec_load(&ds->st_atim);
- age2 = timespec_load(&ds->st_mtim);
- log_debug("Restoring access and modification time on \"%s\": %s, %s",
- p,
- format_timestamp_us(a, sizeof(a), age1),
- format_timestamp_us(b, sizeof(b), age2));
- if (futimens(dirfd(d), times) < 0)
- log_error_errno(errno, "utimensat(%s): %m", p);
- }
-
- return r;
-}
-
-static int path_set_perms(Item *i, const char *path) {
- struct stat st;
- bool st_valid;
-
- assert(i);
- assert(path);
-
- st_valid = stat(path, &st) == 0;
-
- /* not using i->path directly because it may be a glob */
- if (i->mode_set) {
- mode_t m = i->mode;
-
- if (i->mask_perms && st_valid) {
- if (!(st.st_mode & 0111))
- m &= ~0111;
- if (!(st.st_mode & 0222))
- m &= ~0222;
- if (!(st.st_mode & 0444))
- m &= ~0444;
- if (!S_ISDIR(st.st_mode))
- m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */
- }
-
- if (st_valid && m == (st.st_mode & 07777))
- log_debug("\"%s\" has right mode %o", path, st.st_mode);
- else {
- log_debug("chmod \"%s\" to mode %o", path, m);
- if (chmod(path, m) < 0)
- return log_error_errno(errno, "chmod(%s) failed: %m", path);
- }
- }
-
- if ((!st_valid || i->uid != st.st_uid || i->gid != st.st_gid) &&
- (i->uid_set || i->gid_set)) {
- log_debug("chown \"%s\" to "UID_FMT"."GID_FMT,
- path,
- i->uid_set ? i->uid : UID_INVALID,
- i->gid_set ? i->gid : GID_INVALID);
- if (chown(path,
- i->uid_set ? i->uid : UID_INVALID,
- i->gid_set ? i->gid : GID_INVALID) < 0)
-
- return log_error_errno(errno, "chown(%s) failed: %m", path);
- }
-
- return label_fix(path, false, false);
-}
-
-static int get_xattrs_from_arg(Item *i) {
- const char *p;
- int r;
-
- assert(i);
- assert(i->argument);
-
- p = i->argument;
-
- for (;;) {
- _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL;
-
- r = unquote_first_word(&p, &xattr, UNQUOTE_CUNESCAPE);
- if (r < 0)
- log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", p);
- if (r <= 0)
- break;
-
- r = split_pair(xattr, "=", &name, &value);
- if (r < 0) {
- log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr);
- continue;
- }
-
- if (isempty(name) || isempty(value)) {
- log_warning("Malformed xattr found, ignoring: %s", xattr);
- continue;
- }
-
- if (strv_push_pair(&i->xattrs, name, value) < 0)
- return log_oom();
-
- name = value = NULL;
- }
-
- return 0;
-}
-
-static int path_set_xattrs(Item *i, const char *path) {
- char **name, **value;
-
- assert(i);
- assert(path);
-
- STRV_FOREACH_PAIR(name, value, i->xattrs) {
- int n;
-
- n = strlen(*value);
- log_debug("\"%s\": setting xattr \"%s=%s\"", path, *name, *value);
- if (lsetxattr(path, *name, *value, n, 0) < 0) {
- log_error("Setting extended attribute %s=%s on %s failed: %m",
- *name, *value, path);
- return -errno;
- }
- }
- return 0;
-}
-
-static int get_acls_from_arg(Item *item) {
-#ifdef HAVE_ACL
- int r;
-
- assert(item);
-
- /* If force (= modify) is set, we will not modify the acl
- * afterwards, so the mask can be added now if necessary. */
- r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force);
- if (r < 0)
- log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument);
-#else
- log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring");
-#endif
-
- return 0;
-}
-
-#ifdef HAVE_ACL
-static int path_set_acl(const char *path, acl_type_t type, acl_t acl, bool modify) {
- _cleanup_(acl_freep) acl_t dup = NULL;
- int r;
- _cleanup_(acl_free_charpp) char *t = NULL;
-
- /* Returns 0 for success, positive error if already warned,
- * negative error otherwise. */
-
- if (modify) {
- r = acls_for_file(path, type, acl, &dup);
- if (r < 0)
- return r;
-
- r = calc_acl_mask_if_needed(&dup);
- if (r < 0)
- return r;
- } else {
- dup = acl_dup(acl);
- if (!dup)
- return -errno;
-
- /* the mask was already added earlier if needed */
- }
-
- r = add_base_acls_if_needed(&dup, path);
- if (r < 0)
- return r;
-
- t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE);
- log_debug("\"%s\": setting %s ACL \"%s\"", path,
- type == ACL_TYPE_ACCESS ? "access" : "default",
- strna(t));
-
- r = acl_set_file(path, type, dup);
- if (r < 0)
- return -log_error_errno(errno,
- "Setting %s ACL \"%s\" on %s failed: %m",
- type == ACL_TYPE_ACCESS ? "access" : "default",
- strna(t), path);
-
- return 0;
-}
-#endif
-
-static int path_set_acls(Item *item, const char *path) {
- int r = 0;
-#ifdef HAVE_ACL
- assert(item);
- assert(path);
-
- if (item->acl_access)
- r = path_set_acl(path, ACL_TYPE_ACCESS, item->acl_access, item->force);
-
- if (r == 0 && item->acl_default)
- r = path_set_acl(path, ACL_TYPE_DEFAULT, item->acl_default, item->force);
-
- if (r > 0)
- return -r; /* already warned */
- else if (r == -EOPNOTSUPP) {
- log_debug_errno(r, "ACLs not supported by file system at %s", path);
- return 0;
- } else if (r < 0)
- log_error_errno(r, "ACL operation on \"%s\" failed: %m", path);
-#endif
- return r;
-}
-
-#define ALL_ATTRIBS \
- FS_NOATIME_FL | \
- FS_SYNC_FL | \
- FS_DIRSYNC_FL | \
- FS_APPEND_FL | \
- FS_COMPR_FL | \
- FS_NODUMP_FL | \
- FS_EXTENT_FL | \
- FS_IMMUTABLE_FL | \
- FS_JOURNAL_DATA_FL | \
- FS_SECRM_FL | \
- FS_UNRM_FL | \
- FS_NOTAIL_FL | \
- FS_TOPDIR_FL | \
- FS_NOCOW_FL
-
-static int get_attrib_from_arg(Item *item) {
- static const unsigned attributes[] = {
- [(uint8_t)'A'] = FS_NOATIME_FL, /* do not update atime */
- [(uint8_t)'S'] = FS_SYNC_FL, /* Synchronous updates */
- [(uint8_t)'D'] = FS_DIRSYNC_FL, /* dirsync behaviour (directories only) */
- [(uint8_t)'a'] = FS_APPEND_FL, /* writes to file may only append */
- [(uint8_t)'c'] = FS_COMPR_FL, /* Compress file */
- [(uint8_t)'d'] = FS_NODUMP_FL, /* do not dump file */
- [(uint8_t)'e'] = FS_EXTENT_FL, /* Top of directory hierarchies*/
- [(uint8_t)'i'] = FS_IMMUTABLE_FL, /* Immutable file */
- [(uint8_t)'j'] = FS_JOURNAL_DATA_FL, /* Reserved for ext3 */
- [(uint8_t)'s'] = FS_SECRM_FL, /* Secure deletion */
- [(uint8_t)'u'] = FS_UNRM_FL, /* Undelete */
- [(uint8_t)'t'] = FS_NOTAIL_FL, /* file tail should not be merged */
- [(uint8_t)'T'] = FS_TOPDIR_FL, /* Top of directory hierarchies*/
- [(uint8_t)'C'] = FS_NOCOW_FL, /* Do not cow file */
- };
- char *p = item->argument;
- enum {
- MODE_ADD,
- MODE_DEL,
- MODE_SET
- } mode = MODE_ADD;
- unsigned long value = 0, mask = 0;
-
- if (!p) {
- log_error("\"%s\": setting ATTR need an argument", item->path);
- return -EINVAL;
- }
-
- if (*p == '+') {
- mode = MODE_ADD;
- p++;
- } else if (*p == '-') {
- mode = MODE_DEL;
- p++;
- } else if (*p == '=') {
- mode = MODE_SET;
- p++;
- }
-
- if (!*p && mode != MODE_SET) {
- log_error("\"%s\": setting ATTR: argument is empty", item->path);
- return -EINVAL;
- }
- for (; *p ; p++) {
- if ((uint8_t)*p >= ELEMENTSOF(attributes) || attributes[(uint8_t)*p] == 0) {
- log_error("\"%s\": setting ATTR: unknown attr '%c'", item->path, *p);
- return -EINVAL;
- }
- if (mode == MODE_ADD || mode == MODE_SET)
- value |= attributes[(uint8_t)*p];
- else
- value &= ~attributes[(uint8_t)*p];
- mask |= attributes[(uint8_t)*p];
- }
-
- if (mode == MODE_SET)
- mask |= ALL_ATTRIBS;
-
- assert(mask);
-
- item->attrib_mask = mask;
- item->attrib_value = value;
- item->attrib_set = true;
-
- return 0;
-
-}
-
-static int path_set_attrib(Item *item, const char *path) {
- _cleanup_close_ int fd = -1;
- int r;
- unsigned f;
- struct stat st;
-
- /* do nothing */
- if (item->attrib_mask == 0 || !item->attrib_set)
- return 0;
- /*
- * It is OK to ignore an lstat() error, because the error
- * will be catch by the open() below anyway
- */
- if (lstat(path, &st) == 0 &&
- !S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) {
- return 0;
- }
-
- fd = open(path, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
-
- if (fd < 0)
- return log_error_errno(errno, "Cannot open \"%s\": %m", path);
-
- f = item->attrib_value & item->attrib_mask;
- if (!S_ISDIR(st.st_mode))
- f &= ~FS_DIRSYNC_FL;
- r = change_attr_fd(fd, f, item->attrib_mask);
- if (r < 0)
- return log_error_errno(errno,
- "Cannot set attrib for \"%s\", value=0x%08lx, mask=0x%08lx: %m",
- path, item->attrib_value, item->attrib_mask);
-
- return 0;
-}
-
-static int write_one_file(Item *i, const char *path) {
- _cleanup_close_ int fd = -1;
- int flags, r = 0;
- struct stat st;
-
- assert(i);
- assert(path);
-
- flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW :
- i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0;
-
- RUN_WITH_UMASK(0000) {
- mac_selinux_create_file_prepare(path, S_IFREG);
- fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode);
- mac_selinux_create_file_clear();
- }
-
- if (fd < 0) {
- if (i->type == WRITE_FILE && errno == ENOENT) {
- log_debug_errno(errno, "Not writing \"%s\": %m", path);
- return 0;
- }
-
- log_error_errno(errno, "Failed to create file %s: %m", path);
- return -errno;
- }
-
- if (i->argument) {
- _cleanup_free_ char *unescaped;
-
- log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path);
-
- unescaped = cunescape(i->argument);
- if (!unescaped)
- return log_oom();
-
- r = loop_write(fd, unescaped, strlen(unescaped), false);
- if (r < 0)
- return log_error_errno(r, "Failed to write file \"%s\": %m", path);
- } else
- log_debug("\"%s\" has been created.", path);
-
- fd = safe_close(fd);
-
- if (stat(path, &st) < 0)
- return log_error_errno(errno, "stat(%s) failed: %m", path);
-
- if (!S_ISREG(st.st_mode)) {
- log_error("%s is not a file.", path);
- return -EEXIST;
- }
-
- r = path_set_perms(i, path);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-typedef int (*action_t)(Item *, const char *);
-
-static int item_do_children(Item *i, const char *path, action_t action) {
- _cleanup_closedir_ DIR *d;
- int r = 0;
-
- assert(i);
- assert(path);
-
- /* This returns the first error we run into, but nevertheless
- * tries to go on */
-
- d = opendir_nomod(path);
- if (!d)
- return errno == ENOENT || errno == ENOTDIR ? 0 : -errno;
-
- for (;;) {
- _cleanup_free_ char *p = NULL;
- struct dirent *de;
- int q;
-
- errno = 0;
- de = readdir(d);
- if (!de) {
- if (errno != 0 && r == 0)
- r = -errno;
-
- break;
- }
-
- if (STR_IN_SET(de->d_name, ".", ".."))
- continue;
-
- p = strjoin(path, "/", de->d_name, NULL);
- if (!p)
- return -ENOMEM;
-
- q = action(i, p);
- if (q < 0 && q != -ENOENT && r == 0)
- r = q;
-
- if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) {
- q = item_do_children(i, p, action);
- if (q < 0 && r == 0)
- r = q;
- }
- }
-
- return r;
-}
-
-static int glob_item(Item *i, action_t action, bool recursive) {
- _cleanup_globfree_ glob_t g = {
- .gl_closedir = (void (*)(void *)) closedir,
- .gl_readdir = (struct dirent *(*)(void *)) readdir,
- .gl_opendir = (void *(*)(const char *)) opendir_nomod,
- .gl_lstat = lstat,
- .gl_stat = stat,
- };
- int r = 0, k;
- char **fn;
-
- errno = 0;
- k = glob(i->path, GLOB_NOSORT|GLOB_BRACE|GLOB_ALTDIRFUNC, NULL, &g);
- if (k != 0 && k != GLOB_NOMATCH)
- return log_error_errno(errno ?: EIO, "glob(%s) failed: %m", i->path);
-
- STRV_FOREACH(fn, g.gl_pathv) {
- k = action(i, *fn);
- if (k < 0 && r == 0)
- r = k;
-
- if (recursive) {
- k = item_do_children(i, *fn, action);
- if (k < 0 && r == 0)
- r = k;
- }
- }
-
- return r;
-}
-
-typedef enum {
- CREATION_NORMAL,
- CREATION_EXISTING,
- CREATION_FORCE,
- _CREATION_MODE_MAX,
- _CREATION_MODE_INVALID = -1
-} CreationMode;
-
-static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = {
- [CREATION_NORMAL] = "Created",
- [CREATION_EXISTING] = "Found existing",
- [CREATION_FORCE] = "Created replacement",
-};
-
-DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode);
-
-static int create_item(Item *i) {
- struct stat st;
- int r = 0;
- CreationMode creation;
-
- assert(i);
-
- log_debug("Running create action for entry %c %s", (char) i->type, i->path);
-
- switch (i->type) {
-
- case IGNORE_PATH:
- case IGNORE_DIRECTORY_PATH:
- case REMOVE_PATH:
- case RECURSIVE_REMOVE_PATH:
- return 0;
-
- case CREATE_FILE:
- case TRUNCATE_FILE:
- r = write_one_file(i, i->path);
- if (r < 0)
- return r;
- break;
-
- case COPY_FILES:
- log_debug("Copying tree \"%s\" to \"%s\".", i->argument, i->path);
- r = copy_tree(i->argument, i->path, false);
- if (r < 0) {
- struct stat a, b;
-
- if (r != -EEXIST)
- return log_error_errno(r, "Failed to copy files to %s: %m", i->path);
-
- if (stat(i->argument, &a) < 0)
- return log_error_errno(errno, "stat(%s) failed: %m", i->argument);
-
- if (stat(i->path, &b) < 0)
- return log_error_errno(errno, "stat(%s) failed: %m", i->path);
-
- if ((a.st_mode ^ b.st_mode) & S_IFMT) {
- log_debug("Can't copy to %s, file exists already and is of different type", i->path);
- return 0;
- }
- }
-
- r = path_set_perms(i, i->path);
- if (r < 0)
- return r;
-
- break;
-
- case WRITE_FILE:
- r = glob_item(i, write_one_file, false);
- if (r < 0)
- return r;
-
- break;
-
- case CREATE_DIRECTORY:
- case TRUNCATE_DIRECTORY:
- case CREATE_SUBVOLUME:
-
- RUN_WITH_UMASK(0000)
- mkdir_parents_label(i->path, 0755);
-
- if (i->type == CREATE_SUBVOLUME)
- RUN_WITH_UMASK((~i->mode) & 0777) {
- r = btrfs_subvol_make(i->path);
- log_debug_errno(r, "Creating subvolume \"%s\": %m", i->path);
- }
- else
- r = 0;
-
- if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY)
- RUN_WITH_UMASK(0000)
- r = mkdir_label(i->path, i->mode);
-
- if (r < 0) {
- if (r != -EEXIST)
- return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path);
-
- if (stat(i->path, &st) < 0)
- return log_error_errno(errno, "stat(%s) failed: %m", i->path);
-
- if (!S_ISDIR(st.st_mode)) {
- log_debug("\"%s\" already exists and is not a directory.", i->path);
- return 0;
- }
-
- creation = CREATION_EXISTING;
- } else
- creation = CREATION_NORMAL;
- log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path);
-
- r = path_set_perms(i, i->path);
- if (r < 0)
- return r;
-
- break;
-
- case CREATE_FIFO:
-
- RUN_WITH_UMASK(0000) {
- mac_selinux_create_file_prepare(i->path, S_IFIFO);
- r = mkfifo(i->path, i->mode);
- mac_selinux_create_file_clear();
- }
-
- if (r < 0) {
- if (errno != EEXIST)
- return log_error_errno(errno, "Failed to create fifo %s: %m", i->path);
-
- if (stat(i->path, &st) < 0)
- return log_error_errno(errno, "stat(%s) failed: %m", i->path);
-
- if (!S_ISFIFO(st.st_mode)) {
-
- if (i->force) {
-
- RUN_WITH_UMASK(0000) {
- mac_selinux_create_file_prepare(i->path, S_IFIFO);
- r = mkfifo_atomic(i->path, i->mode);
- mac_selinux_create_file_clear();
- }
-
- if (r < 0)
- return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
- creation = CREATION_FORCE;
- } else {
- log_debug("%s is not a fifo.", i->path);
- return 0;
- }
- } else
- creation = CREATION_EXISTING;
- } else
- creation = CREATION_NORMAL;
- log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path);
-
- r = path_set_perms(i, i->path);
- if (r < 0)
- return r;
-
- break;
-
- case CREATE_SYMLINK:
-
- mac_selinux_create_file_prepare(i->path, S_IFLNK);
- r = symlink(i->argument, i->path);
- mac_selinux_create_file_clear();
-
- if (r < 0) {
- _cleanup_free_ char *x = NULL;
-
- if (errno != EEXIST)
- return log_error_errno(errno, "symlink(%s, %s) failed: %m", i->argument, i->path);
-
- r = readlink_malloc(i->path, &x);
- if (r < 0 || !streq(i->argument, x)) {
-
- if (i->force) {
- mac_selinux_create_file_prepare(i->path, S_IFLNK);
- r = symlink_atomic(i->argument, i->path);
- mac_selinux_create_file_clear();
-
- if (r < 0)
- return log_error_errno(r, "symlink(%s, %s) failed: %m", i->argument, i->path);
- creation = CREATION_FORCE;
- } else {
- log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path);
- return 0;
- }
- } else
- creation = CREATION_EXISTING;
- } else
- creation = CREATION_NORMAL;
- log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path);
-
- break;
-
- case CREATE_BLOCK_DEVICE:
- case CREATE_CHAR_DEVICE: {
- mode_t file_type;
-
- if (have_effective_cap(CAP_MKNOD) == 0) {
- /* In a container we lack CAP_MKNOD. We
- shouldn't attempt to create the device node in
- that case to avoid noise, and we don't support
- virtualized devices in containers anyway. */
-
- log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
- return 0;
- }
-
- file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
-
- RUN_WITH_UMASK(0000) {
- mac_selinux_create_file_prepare(i->path, file_type);
- r = mknod(i->path, i->mode | file_type, i->major_minor);
- mac_selinux_create_file_clear();
- }
-
- if (r < 0) {
- if (errno == EPERM) {
- log_debug("We lack permissions, possibly because of cgroup configuration; "
- "skipping creation of device node %s.", i->path);
- return 0;
- }
-
- if (errno != EEXIST)
- return log_error_errno(errno, "Failed to create device node %s: %m", i->path);
-
- if (stat(i->path, &st) < 0)
- return log_error_errno(errno, "stat(%s) failed: %m", i->path);
-
- if ((st.st_mode & S_IFMT) != file_type) {
-
- if (i->force) {
-
- RUN_WITH_UMASK(0000) {
- mac_selinux_create_file_prepare(i->path, file_type);
- r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
- mac_selinux_create_file_clear();
- }
-
- if (r < 0)
- return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path);
- creation = CREATION_FORCE;
- } else {
- log_debug("%s is not a device node.", i->path);
- return 0;
- }
- } else
- creation = CREATION_EXISTING;
- } else
- creation = CREATION_NORMAL;
- log_debug("%s %s device node \"%s\" %u:%u.",
- creation_mode_verb_to_string(creation),
- i->type == CREATE_BLOCK_DEVICE ? "block" : "char",
- i->path, major(i->mode), minor(i->mode));
-
- r = path_set_perms(i, i->path);
- if (r < 0)
- return r;
-
- break;
- }
-
- case ADJUST_MODE:
- case RELABEL_PATH:
- r = glob_item(i, path_set_perms, false);
- if (r < 0)
- return r;
- break;
-
- case RECURSIVE_RELABEL_PATH:
- r = glob_item(i, path_set_perms, true);
- if (r < 0)
- return r;
- break;
-
- case SET_XATTR:
- r = glob_item(i, path_set_xattrs, false);
- if (r < 0)
- return r;
- break;
-
- case RECURSIVE_SET_XATTR:
- r = glob_item(i, path_set_xattrs, true);
- if (r < 0)
- return r;
- break;
-
- case SET_ACL:
- r = glob_item(i, path_set_acls, false);
- if (r < 0)
- return r;
- break;
-
- case RECURSIVE_SET_ACL:
- r = glob_item(i, path_set_acls, true);
- if (r < 0)
- return r;
- break;
-
- case SET_ATTRIB:
- r = glob_item(i, path_set_attrib, false);
- if (r < 0)
- return r;
- break;
-
- case RECURSIVE_SET_ATTRIB:
- r = glob_item(i, path_set_attrib, true);
- if (r < 0)
- return r;
- break;
- }
-
- return 0;
-}
-
-static int remove_item_instance(Item *i, const char *instance) {
- int r;
-
- assert(i);
-
- switch (i->type) {
-
- case REMOVE_PATH:
- if (remove(instance) < 0 && errno != ENOENT)
- return log_error_errno(errno, "rm(%s): %m", instance);
-
- break;
-
- case TRUNCATE_DIRECTORY:
- case RECURSIVE_REMOVE_PATH:
- /* FIXME: we probably should use dir_cleanup() here
- * instead of rm_rf() so that 'x' is honoured. */
- log_debug("rm -rf \"%s\"", instance);
- r = rm_rf_dangerous(instance, false, i->type == RECURSIVE_REMOVE_PATH, false);
- if (r < 0 && r != -ENOENT)
- return log_error_errno(r, "rm_rf(%s): %m", instance);
-
- break;
-
- default:
- assert_not_reached("wut?");
- }
-
- return 0;
-}
-
-static int remove_item(Item *i) {
- int r = 0;
-
- assert(i);
-
- log_debug("Running remove action for entry %c %s", (char) i->type, i->path);
-
- switch (i->type) {
-
- case CREATE_FILE:
- case TRUNCATE_FILE:
- case CREATE_DIRECTORY:
- case CREATE_SUBVOLUME:
- case CREATE_FIFO:
- case CREATE_SYMLINK:
- case CREATE_CHAR_DEVICE:
- case CREATE_BLOCK_DEVICE:
- case IGNORE_PATH:
- case IGNORE_DIRECTORY_PATH:
- case ADJUST_MODE:
- case RELABEL_PATH:
- case RECURSIVE_RELABEL_PATH:
- case WRITE_FILE:
- case COPY_FILES:
- case SET_XATTR:
- case RECURSIVE_SET_XATTR:
- case SET_ACL:
- case RECURSIVE_SET_ACL:
- case SET_ATTRIB:
- case RECURSIVE_SET_ATTRIB:
- break;
-
- case REMOVE_PATH:
- case TRUNCATE_DIRECTORY:
- case RECURSIVE_REMOVE_PATH:
- r = glob_item(i, remove_item_instance, false);
- break;
- }
-
- return r;
-}
-
-static int clean_item_instance(Item *i, const char* instance) {
- _cleanup_closedir_ DIR *d = NULL;
- struct stat s, ps;
- bool mountpoint;
- usec_t cutoff, n;
- char timestamp[FORMAT_TIMESTAMP_MAX];
-
- assert(i);
-
- if (!i->age_set)
- return 0;
-
- n = now(CLOCK_REALTIME);
- if (n < i->age)
- return 0;
-
- cutoff = n - i->age;
-
- d = opendir_nomod(instance);
- if (!d) {
- if (errno == ENOENT || errno == ENOTDIR) {
- log_debug_errno(errno, "Directory \"%s\": %m", instance);
- return 0;
- }
-
- log_error_errno(errno, "Failed to open directory %s: %m", instance);
- return -errno;
- }
-
- if (fstat(dirfd(d), &s) < 0)
- return log_error_errno(errno, "stat(%s) failed: %m", i->path);
-
- if (!S_ISDIR(s.st_mode)) {
- log_error("%s is not a directory.", i->path);
- return -ENOTDIR;
- }
-
- if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0)
- return log_error_errno(errno, "stat(%s/..) failed: %m", i->path);
-
- mountpoint = s.st_dev != ps.st_dev ||
- (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
-
- log_debug("Cleanup threshold for %s \"%s\" is %s",
- mountpoint ? "mount point" : "directory",
- instance,
- format_timestamp_us(timestamp, sizeof(timestamp), cutoff));
-
- return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
- MAX_DEPTH, i->keep_first_level);
-}
-
-static int clean_item(Item *i) {
- int r = 0;
-
- assert(i);
-
- log_debug("Running clean action for entry %c %s", (char) i->type, i->path);
-
- switch (i->type) {
- case CREATE_DIRECTORY:
- case CREATE_SUBVOLUME:
- case TRUNCATE_DIRECTORY:
- case IGNORE_PATH:
- case COPY_FILES:
- clean_item_instance(i, i->path);
- break;
- case IGNORE_DIRECTORY_PATH:
- r = glob_item(i, clean_item_instance, false);
- break;
- default:
- break;
- }
-
- return r;
-}
-
-static int process_item_array(ItemArray *array);
-
-static int process_item(Item *i) {
- int r, q, p, t = 0;
- _cleanup_free_ char *prefix = NULL;
-
- assert(i);
-
- if (i->done)
- return 0;
-
- i->done = true;
-
- prefix = malloc(strlen(i->path) + 1);
- if (!prefix)
- return log_oom();
-
- PATH_FOREACH_PREFIX(prefix, i->path) {
- ItemArray *j;
-
- j = hashmap_get(items, prefix);
- if (j) {
- int s;
-
- s = process_item_array(j);
- if (s < 0 && t == 0)
- t = s;
- }
- }
-
- r = arg_create ? create_item(i) : 0;
- q = arg_remove ? remove_item(i) : 0;
- p = arg_clean ? clean_item(i) : 0;
-
- return t < 0 ? t :
- r < 0 ? r :
- q < 0 ? q :
- p;
-}
-
-static int process_item_array(ItemArray *array) {
- unsigned n;
- int r = 0, k;
-
- assert(array);
-
- for (n = 0; n < array->count; n++) {
- k = process_item(array->items + n);
- if (k < 0 && r == 0)
- r = k;
- }
-
- return r;
-}
-
-static void item_free_contents(Item *i) {
- assert(i);
- free(i->path);
- free(i->argument);
- strv_free(i->xattrs);
-
-#ifdef HAVE_ACL
- acl_free(i->acl_access);
- acl_free(i->acl_default);
-#endif
-}
-
-static void item_array_free(ItemArray *a) {
- unsigned n;
-
- if (!a)
- return;
-
- for (n = 0; n < a->count; n++)
- item_free_contents(a->items + n);
- free(a->items);
- free(a);
-}
-
-static bool item_compatible(Item *a, Item *b) {
- assert(a);
- assert(b);
- assert(streq(a->path, b->path));
-
- if (takes_ownership(a->type) && takes_ownership(b->type))
- /* check if the items are the same */
- return streq_ptr(a->argument, b->argument) &&
-
- a->uid_set == b->uid_set &&
- a->uid == b->uid &&
-
- a->gid_set == b->gid_set &&
- a->gid == b->gid &&
-
- a->mode_set == b->mode_set &&
- a->mode == b->mode &&
-
- a->age_set == b->age_set &&
- a->age == b->age &&
-
- a->mask_perms == b->mask_perms &&
-
- a->keep_first_level == b->keep_first_level &&
-
- a->major_minor == b->major_minor;
-
- return true;
-}
-
-static bool should_include_path(const char *path) {
- char **prefix;
-
- STRV_FOREACH(prefix, arg_exclude_prefixes)
- if (path_startswith(path, *prefix)) {
- log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
- path, *prefix);
- return false;
- }
-
- STRV_FOREACH(prefix, arg_include_prefixes)
- if (path_startswith(path, *prefix)) {
- log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix);
- return true;
- }
-
- /* no matches, so we should include this path only if we
- * have no whitelist at all */
- if (strv_length(arg_include_prefixes) == 0)
- return true;
-
- log_debug("Entry \"%s\" does not match any include prefix, skipping.", path);
- return false;
-}
-
-static int parse_line(const char *fname, unsigned line, const char *buffer) {
-
- static const Specifier specifier_table[] = {
- { 'm', specifier_machine_id, NULL },
- { 'b', specifier_boot_id, NULL },
- { 'H', specifier_host_name, NULL },
- { 'v', specifier_kernel_release, NULL },
- {}
- };
-
- _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
- _cleanup_(item_free_contents) Item i = {};
- ItemArray *existing;
- Hashmap *h;
- int r, pos;
- bool force = false, boot = false;
-
- assert(fname);
- assert(line >= 1);
- assert(buffer);
-
- r = unquote_many_words(
- &buffer,
- 0,
- &action,
- &path,
- &mode,
- &user,
- &group,
- &age,
- NULL);
- if (r < 0)
- return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line);
- else if (r < 2) {
- log_error("[%s:%u] Syntax error.", fname, line);
- return -EIO;
- }
-
- if (!isempty(buffer)) {
- i.argument = strdup(buffer);
- if (!i.argument)
- return log_oom();
- }
-
- if (isempty(action)) {
- log_error("[%s:%u] Command too short '%s'.", fname, line, action);
- return -EINVAL;
- }
-
- for (pos = 1; action[pos]; pos++) {
- if (action[pos] == '!' && !boot)
- boot = true;
- else if (action[pos] == '+' && !force)
- force = true;
- else {
- log_error("[%s:%u] Unknown modifiers in command '%s'",
- fname, line, action);
- return -EINVAL;
- }
- }
-
- if (boot && !arg_boot) {
- log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
- action, path);
- return 0;
- }
-
- i.type = action[0];
- i.force = force;
-
- r = specifier_printf(path, specifier_table, NULL, &i.path);
- if (r < 0) {
- log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
- return r;
- }
-
- switch (i.type) {
-
- case CREATE_FILE:
- case TRUNCATE_FILE:
- case CREATE_DIRECTORY:
- case CREATE_SUBVOLUME:
- case TRUNCATE_DIRECTORY:
- case CREATE_FIFO:
- case IGNORE_PATH:
- case IGNORE_DIRECTORY_PATH:
- case REMOVE_PATH:
- case RECURSIVE_REMOVE_PATH:
- case ADJUST_MODE:
- case RELABEL_PATH:
- case RECURSIVE_RELABEL_PATH:
- break;
-
- case CREATE_SYMLINK:
- if (!i.argument) {
- i.argument = strappend("/usr/share/factory/", i.path);
- if (!i.argument)
- return log_oom();
- }
- break;
-
- case WRITE_FILE:
- if (!i.argument) {
- log_error("[%s:%u] Write file requires argument.", fname, line);
- return -EBADMSG;
- }
- break;
-
- case COPY_FILES:
- if (!i.argument) {
- i.argument = strappend("/usr/share/factory/", i.path);
- if (!i.argument)
- return log_oom();
- } else if (!path_is_absolute(i.argument)) {
- log_error("[%s:%u] Source path is not absolute.", fname, line);
- return -EBADMSG;
- }
-
- path_kill_slashes(i.argument);
- break;
-
- case CREATE_CHAR_DEVICE:
- case CREATE_BLOCK_DEVICE: {
- unsigned major, minor;
-
- if (!i.argument) {
- log_error("[%s:%u] Device file requires argument.", fname, line);
- return -EBADMSG;
- }
-
- if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) {
- log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument);
- return -EBADMSG;
- }
-
- i.major_minor = makedev(major, minor);
- break;
- }
-
- case SET_XATTR:
- case RECURSIVE_SET_XATTR:
- if (!i.argument) {
- log_error("[%s:%u] Set extended attribute requires argument.", fname, line);
- return -EBADMSG;
- }
- r = get_xattrs_from_arg(&i);
- if (r < 0)
- return r;
- break;
-
- case SET_ACL:
- case RECURSIVE_SET_ACL:
- if (!i.argument) {
- log_error("[%s:%u] Set ACLs requires argument.", fname, line);
- return -EBADMSG;
- }
- r = get_acls_from_arg(&i);
- if (r < 0)
- return r;
- break;
-
- case SET_ATTRIB:
- case RECURSIVE_SET_ATTRIB:
- if (!i.argument) {
- log_error("[%s:%u] Set attrib requires argument.", fname, line);
- return -EBADMSG;
- }
- r = get_attrib_from_arg(&i);
- if (r < 0)
- return r;
- break;
-
- default:
- log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type);
- return -EBADMSG;
- }
-
- if (!path_is_absolute(i.path)) {
- log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path);
- return -EBADMSG;
- }
-
- path_kill_slashes(i.path);
-
- if (!should_include_path(i.path))
- return 0;
-
- if (arg_root) {
- char *p;
-
- p = strappend(arg_root, i.path);
- if (!p)
- return log_oom();
-
- free(i.path);
- i.path = p;
- }
-
- 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);
- return r;
- }
-
- 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);
- return r;
- }
-
- i.gid_set = true;
- }
-
- if (mode && !streq(mode, "-")) {
- const char *mm = mode;
- unsigned m;
-
- if (*mm == '~') {
- i.mask_perms = true;
- mm++;
- }
-
- if (sscanf(mm, "%o", &m) != 1) {
- log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
- return -ENOENT;
- }
-
- i.mode = m;
- i.mode_set = true;
- } else
- i.mode = IN_SET(i.type, CREATE_DIRECTORY, CREATE_SUBVOLUME, TRUNCATE_DIRECTORY)
- ? 0755 : 0644;
-
- if (age && !streq(age, "-")) {
- const char *a = age;
-
- if (*a == '~') {
- i.keep_first_level = true;
- a++;
- }
-
- if (parse_sec(a, &i.age) < 0) {
- log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
- return -EBADMSG;
- }
-
- i.age_set = true;
- }
-
- h = needs_glob(i.type) ? globs : items;
-
- existing = hashmap_get(h, i.path);
- if (existing) {
- unsigned n;
-
- for (n = 0; n < existing->count; n++) {
- if (!item_compatible(existing->items + n, &i)) {
- log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
- fname, line, i.path);
- return 0;
- }
- }
- } else {
- existing = new0(ItemArray, 1);
- r = hashmap_put(h, i.path, existing);
- if (r < 0)
- return log_oom();
- }
-
- if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1))
- return log_oom();
-
- memcpy(existing->items + existing->count++, &i, sizeof(i));
- zero(i);
- return 0;
-}
-
-static void help(void) {
- printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
- "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " --create Create marked files/directories\n"
- " --clean Clean up marked directories\n"
- " --remove Remove marked files/directories\n"
- " --boot Execute actions only safe at boot\n"
- " --prefix=PATH Only apply rules with the specified prefix\n"
- " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
- " --root=PATH Operate on an alternate filesystem root\n",
- program_invocation_short_name);
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_VERSION = 0x100,
- ARG_CREATE,
- ARG_CLEAN,
- ARG_REMOVE,
- ARG_BOOT,
- ARG_PREFIX,
- ARG_EXCLUDE_PREFIX,
- ARG_ROOT,
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
- { "create", no_argument, NULL, ARG_CREATE },
- { "clean", no_argument, NULL, ARG_CLEAN },
- { "remove", no_argument, NULL, ARG_REMOVE },
- { "boot", no_argument, NULL, ARG_BOOT },
- { "prefix", required_argument, NULL, ARG_PREFIX },
- { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
- { "root", required_argument, NULL, ARG_ROOT },
- {}
- };
-
- int c;
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
-
- switch (c) {
-
- case 'h':
- help();
- return 0;
-
- case ARG_VERSION:
- puts(PACKAGE_STRING);
- puts(SYSTEMD_FEATURES);
- 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_BOOT:
- arg_boot = true;
- break;
-
- case ARG_PREFIX:
- if (strv_push(&arg_include_prefixes, optarg) < 0)
- return log_oom();
- break;
-
- case ARG_EXCLUDE_PREFIX:
- if (strv_push(&arg_exclude_prefixes, optarg) < 0)
- return log_oom();
- break;
-
- case ARG_ROOT:
- free(arg_root);
- arg_root = path_make_absolute_cwd(optarg);
- if (!arg_root)
- return log_oom();
-
- path_kill_slashes(arg_root);
- break;
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached("Unhandled option");
- }
-
- if (!arg_clean && !arg_create && !arg_remove) {
- log_error("You need to specify at least one of --clean, --create or --remove.");
- return -EINVAL;
- }
-
- return 1;
-}
-
-static int read_config_file(const char *fn, bool ignore_enoent) {
- _cleanup_fclose_ FILE *f = NULL;
- char line[LINE_MAX];
- Iterator iterator;
- unsigned v = 0;
- Item *i;
- int r;
-
- assert(fn);
-
- r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f);
- if (r < 0) {
- if (ignore_enoent && r == -ENOENT) {
- log_debug_errno(r, "Failed to open \"%s\": %m", fn);
- return 0;
- }
-
- return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn);
- }
- log_debug("Reading config file \"%s\".", fn);
-
- FOREACH_LINE(line, f, break) {
- char *l;
- int k;
-
- v++;
-
- l = strstrip(line);
- if (*l == '#' || *l == 0)
- continue;
-
- k = parse_line(fn, v, l);
- if (k < 0 && r == 0)
- r = k;
- }
-
- /* we have to determine age parameter for each entry of type X */
- HASHMAP_FOREACH(i, globs, iterator) {
- Iterator iter;
- Item *j, *candidate_item = NULL;
-
- if (i->type != IGNORE_DIRECTORY_PATH)
- continue;
-
- HASHMAP_FOREACH(j, items, iter) {
- if (j->type != CREATE_DIRECTORY && j->type != TRUNCATE_DIRECTORY && j->type != CREATE_SUBVOLUME)
- continue;
-
- if (path_equal(j->path, i->path)) {
- candidate_item = j;
- break;
- }
-
- if ((!candidate_item && path_startswith(i->path, j->path)) ||
- (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
- candidate_item = j;
- }
-
- if (candidate_item && candidate_item->age_set) {
- i->age = candidate_item->age;
- i->age_set = true;
- }
- }
-
- if (ferror(f)) {
- log_error_errno(errno, "Failed to read from file %s: %m", fn);
- if (r == 0)
- r = -EIO;
- }
-
- return r;
-}
-
-int main(int argc, char *argv[]) {
- int r, k;
- ItemArray *a;
- Iterator iterator;
-
- r = parse_argv(argc, argv);
- if (r <= 0)
- goto finish;
-
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
- mac_selinux_init(NULL);
-
- items = hashmap_new(&string_hash_ops);
- globs = hashmap_new(&string_hash_ops);
-
- if (!items || !globs) {
- r = log_oom();
- goto finish;
- }
-
- r = 0;
-
- if (optind < argc) {
- int j;
-
- for (j = optind; j < argc; j++) {
- k = read_config_file(argv[j], false);
- if (k < 0 && r == 0)
- r = k;
- }
-
- } else {
- _cleanup_strv_free_ char **files = NULL;
- char **f;
-
- r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
- if (r < 0) {
- log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m");
- goto finish;
- }
-
- STRV_FOREACH(f, files) {
- k = read_config_file(*f, true);
- if (k < 0 && r == 0)
- r = k;
- }
- }
-
- HASHMAP_FOREACH(a, globs, iterator) {
- k = process_item_array(a);
- if (k < 0 && r == 0)
- r = k;
- }
-
- HASHMAP_FOREACH(a, items, iterator) {
- k = process_item_array(a);
- if (k < 0 && r == 0)
- r = k;
- }
-
-finish:
- while ((a = hashmap_steal_first(items)))
- item_array_free(a);
-
- while ((a = hashmap_steal_first(globs)))
- item_array_free(a);
-
- hashmap_free(items);
- hashmap_free(globs);
-
- free(arg_include_prefixes);
- free(arg_exclude_prefixes);
- free(arg_root);
-
- set_free_free(unix_sockets);
-
- mac_selinux_finish();
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
~ianmdlvl / elogind.git / blobdiff