#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
/* These ones take globs */
IGNORE_PATH = 'x',
+ IGNORE_DIRECTORY_PATH = 'X',
REMOVE_PATH = 'r',
RECURSIVE_REMOVE_PATH = 'R',
RELABEL_PATH = 'z',
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 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;
+ return t == IGNORE_PATH || t == IGNORE_DIRECTORY_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) {
}
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)
+ int maxdepth,
+ bool keep_this_level)
{
struct dirent *dent;
struct timespec times[2];
sub_path = NULL;
if (asprintf(&sub_path, "%s/%s", p, dent->d_name) < 0) {
- log_error("Out of memory");
- r = -ENOMEM;
+ r = log_oom();
goto finish;
}
continue;
}
- q = dir_cleanup(sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1);
+ q = dir_cleanup(i, 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 (!i->type == IGNORE_DIRECTORY_PATH || !streq(dent->d_name, p)) {
+ 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;
+ if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0) {
+ if (errno != ENOENT && errno != ENOTEMPTY) {
+ log_error("rmdir(%s): %m", sub_path);
+ r = -errno;
+ }
}
}
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));
return r;
}
-static int clean_item(Item *i) {
- DIR *d;
- struct stat s, ps;
- bool mountpoint;
- int r;
- usec_t cutoff, n;
+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;
+ }
- assert(i);
+ 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) {
- if (i->type != CREATE_DIRECTORY &&
- i->type != TRUNCATE_DIRECTORY &&
- i->type != IGNORE_PATH)
- return 0;
+ log_error("chown(%s) failed: %m", path);
+ return -errno;
+ }
- if (!i->age_set || i->age <= 0)
- return 0;
+ return label_fix(path, false, false);
+}
- n = now(CLOCK_REALTIME);
- if (n < i->age)
- return 0;
+static int write_one_file(Item *i, const char *path) {
+ int r, e, fd, flags;
+ struct stat st;
+ mode_t u;
- cutoff = n - i->age;
+ flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND :
+ i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC : 0;
- d = opendir(i->path);
- if (!d) {
- if (errno == ENOENT)
+ 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 open directory %s: %m", i->path);
+ log_error("Failed to create file %s: %m", 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;
- }
+ if (i->argument) {
+ ssize_t n;
+ size_t l;
+ _cleanup_free_ char *unescaped;
- mountpoint = s.st_dev != ps.st_dev ||
- (s.st_dev == ps.st_dev && s.st_ino == ps.st_ino);
+ unescaped = cunescape(i->argument);
+ if (unescaped == NULL) {
+ close_nointr_nofail(fd);
+ return log_oom();
+ }
- r = dir_cleanup(i->path, d, &s, cutoff, s.st_dev, mountpoint, MAX_DEPTH);
+ l = strlen(unescaped);
+ n = write(fd, unescaped, l);
-finish:
- if (d)
- closedir(d);
+ 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;
+ }
+ }
- return r;
-}
+ close_nointr_nofail(fd);
-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 (stat(path, &st) < 0) {
+ log_error("stat(%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) {
+ if (!S_ISREG(st.st_mode)) {
+ log_error("%s is not a file.", path);
+ return -EEXIST;
+ }
- log_error("chown(%s) failed: %m", path);
- return -errno;
- }
+ r = item_set_perms(i, path);
+ if (r < 0)
+ return r;
- return label_fix(path, false);
+ return 0;
}
static int recursive_relabel_children(Item *i, const char *path) {
return errno == ENOENT ? 0 : -errno;
for (;;) {
- struct dirent buf, *de;
+ struct dirent *de;
+ union dirent_storage buf;
bool is_dir;
int r;
char *entry_path;
- r = readdir_r(d, &buf, &de);
+ r = readdir_r(d, &buf.de, &de);
if (r != 0) {
if (ret == 0)
ret = -r;
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:
- case WRITE_FILE: {
- int fd, flags;
-
- flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND :
- i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC : 0;
-
- u = umask(0);
- label_context_set(i->path, S_IFREG);
- fd = open(i->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)
- break;
-
- log_error("Failed to create file %s: %m", i->path);
- return -errno;
- }
-
- if (i->argument) {
- ssize_t n;
- size_t l;
- struct iovec iovec[2];
- static const char new_line = '\n';
-
- l = strlen(i->argument);
-
- zero(iovec);
- iovec[0].iov_base = i->argument;
- iovec[0].iov_len = l;
-
- iovec[1].iov_base = (void*) &new_line;
- iovec[1].iov_len = 1;
-
- n = writev(fd, iovec, 2);
- if (n < 0 || (size_t) n != l+1) {
- log_error("Failed to write file %s: %s", i->path, n < 0 ? strerror(-n) : "Short");
- close_nointr_nofail(fd);
- return n < 0 ? n : -EIO;
- }
- }
-
- close_nointr_nofail(fd);
-
- if (stat(i->path, &st) < 0) {
- log_error("stat(%s) failed: %m", i->path);
- return -errno;
- }
-
- if (!S_ISREG(st.st_mode)) {
- log_error("%s is not a file.", i->path);
- return -EEXIST;
- }
-
- r = item_set_perms(i, i->path);
+ 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(i->path, 0755);
+ mkdir_parents_label(i->path, 0755);
r = mkdir(i->path, i->mode);
umask(u);
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, CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR);
- r = mknod(i->path, i->mode | (i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR), i->major_minor);
+ 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);
return -errno;
}
- if (i->type == CREATE_BLOCK_DEVICE ? !S_ISBLK(st.st_mode) : !S_ISCHR(st.st_mode)) {
+ if ((st.st_mode & S_IFMT) != file_type) {
log_error("%s is not a device node.", i->path);
return -EEXIST;
}
case CREATE_BLOCK_DEVICE:
case CREATE_CHAR_DEVICE:
case IGNORE_PATH:
+ case IGNORE_DIRECTORY_PATH:
case RELABEL_PATH:
case RECURSIVE_RELABEL_PATH:
case WRITE_FILE:
case TRUNCATE_DIRECTORY:
case RECURSIVE_REMOVE_PATH:
- r = rm_rf(instance, false, i->type == RECURSIVE_REMOVE_PATH, false);
+ /* 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;
case CREATE_CHAR_DEVICE:
case CREATE_BLOCK_DEVICE:
case IGNORE_PATH:
+ case IGNORE_DIRECTORY_PATH:
case RELABEL_PATH:
case RECURSIVE_RELABEL_PATH:
case WRITE_FILE:
return r;
}
+static int clean_item_instance(Item *i, const char* instance) {
+ DIR *d;
+ struct stat s, ps;
+ bool mountpoint;
+ int r;
+ usec_t cutoff, n;
+
+ assert(i);
+
+ if (!i->age_set)
+ return 0;
+
+ n = now(CLOCK_REALTIME);
+ if (n < i->age)
+ return 0;
+
+ cutoff = n - i->age;
+
+ d = opendir(instance);
+ if (!d) {
+ if (errno == ENOENT || errno == ENOTDIR)
+ 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, instance, d, &s, cutoff, s.st_dev, mountpoint, MAX_DEPTH, i->keep_first_level);
+
+finish:
+ if (d)
+ closedir(d);
+
+ return r;
+}
+
+static int clean_item(Item *i) {
+ int r = 0;
+
+ assert(i);
+
+ switch (i->type) {
+ case CREATE_DIRECTORY:
+ case TRUNCATE_DIRECTORY:
+ case IGNORE_PATH:
+ clean_item_instance(i, i->path);
+ break;
+ case IGNORE_DIRECTORY_PATH:
+ r = glob_item(i, clean_item_instance);
+ break;
+ default:
+ break;
+ }
+
+ return r;
+}
+
static int process_item(Item *i) {
int r, q, p;
assert(buffer);
i = new0(Item, 1);
- if (!i) {
- log_error("Out of memory");
- return -ENOMEM;
- }
+ if (!i)
+ return log_oom();
if (sscanf(buffer,
"%c "
n += strspn(buffer+n, WHITESPACE);
if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) {
i->argument = unquote(buffer+n, "\"");
- if (!i->argument) {
- log_error("Out of memory");
- return -ENOMEM;
- }
+ if (!i->argument)
+ return log_oom();
}
}
case TRUNCATE_DIRECTORY:
case CREATE_FIFO:
case IGNORE_PATH:
+ case IGNORE_DIRECTORY_PATH:
case REMOVE_PATH:
case RECURSIVE_REMOVE_PATH:
case RELABEL_PATH:
if (user && !streq(user, "-")) {
const char *u = user;
- r = get_user_creds(&u, &i->uid, NULL, NULL);
+ 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->type == TRUNCATE_DIRECTORY ? 0755 : 0644;
if (age && !streq(age, "-")) {
- if (parse_usec(age, &i->age) < 0) {
+ 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;
FILE *f;
unsigned v = 0;
int r = 0;
+ Iterator iterator;
+ Item *i;
assert(fn);
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)
+ 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) {
+ i->age = candidate_item->age;
+ i->age_set = true;
+ }
+ }
+
if (ferror(f)) {
log_error("Failed to read from file %s: %m", fn);
if (r == 0)
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;
globs = hashmap_new(string_hash_func, string_compare_func);
if (!items || !globs) {
- log_error("Out of memory");
+ log_oom();
r = EXIT_FAILURE;
goto finish;
}
if (optind < argc) {
int j;
- for (j = optind; j < argc; j++)
- if (read_config_file(argv[j], false) < 0)
+ 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(&files, ".conf",
- "/etc/tmpfiles.d",
- "/run/tmpfiles.d",
- "/usr/local/lib/tmpfiles.d",
- "/usr/lib/tmpfiles.d",
- NULL);
+ 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;
~ianmdlvl / elogind.git / blobdiff