along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <unistd.h>
//#include "btrfs-util.h"
+#include "cgroup-util.h"
+#include "dirent-util.h"
#include "fd-util.h"
#include "log.h"
#include "macro.h"
#include "stat-util.h"
#include "string-util.h"
+static bool is_physical_fs(const struct statfs *sfs) {
+ return !is_temporary_fs(sfs) && !is_cgroup_fs(sfs);
+}
+
int rm_rf_children(int fd, RemoveFlags flags, struct stat *root_dev) {
_cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
int ret = 0, r;
+ struct statfs sfs;
assert(fd >= 0);
if (!(flags & REMOVE_PHYSICAL)) {
- r = fd_is_temporary_fs(fd);
+ r = fstatfs(fd, &sfs);
if (r < 0) {
safe_close(fd);
- return r;
+ return -errno;
}
- if (!r) {
+ if (is_physical_fs(&sfs)) {
/* We refuse to clean physical file systems
* with this call, unless explicitly
* requested. This is extra paranoia just to
return errno == ENOENT ? 0 : -errno;
}
- for (;;) {
- struct dirent *de;
+ FOREACH_DIRENT_ALL(de, d, return -errno) {
bool is_dir;
struct stat st;
- errno = 0;
- de = readdir(d);
- if (!de) {
- if (errno > 0 && ret == 0)
- ret = -errno;
- return ret;
- }
-
- if (streq(de->d_name, ".") || streq(de->d_name, ".."))
+ if (dot_or_dot_dot(de->d_name))
continue;
if (de->d_type == DT_UNKNOWN ||
}
}
}
+ return ret;
}
int rm_rf(const char *path, RemoveFlags flags) {
/* We refuse to clean the root file system with this
* call. This is extra paranoia to never cause a really
* seriously broken system. */
- if (path_equal(path, "/")) {
+ if (path_equal_or_files_same(path, "/", AT_SYMLINK_NOFOLLOW)) {
log_error("Attempted to remove entire root file system, and we can't allow that.");
return -EPERM;
}
if (statfs(path, &s) < 0)
return -errno;
- if (!is_temporary_fs(&s)) {
+ if (is_physical_fs(&s)) {
log_error("Attempted to remove disk file system, and we can't allow that.");
return -EPERM;
}