-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include "util.h"
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <unistd.h>
+
+//#include "btrfs-util.h"
+#include "cgroup-util.h"
+#include "fd-util.h"
+#include "log.h"
+#include "macro.h"
+#include "mount-util.h"
#include "path-util.h"
-// #include "btrfs-util.h"
#include "rm-rf.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;
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
errno = 0;
de = readdir(d);
if (!de) {
- if (errno != 0 && ret == 0)
+ if (errno > 0 && ret == 0)
ret = -errno;
return ret;
}
continue;
}
-#if 0
+#if 0 /// elogind does not support BTRFS this directly
if ((flags & REMOVE_SUBVOLUME) && st.st_ino == 256) {
/* This could be a subvolume, try to remove it */
- r = btrfs_subvol_remove_fd(fd, de->d_name, true);
+
+ r = btrfs_subvol_remove_fd(fd, de->d_name, BTRFS_REMOVE_RECURSIVE|BTRFS_REMOVE_QUOTA);
if (r < 0) {
- if (r != -ENOTTY && r != -EINVAL) {
+ if (r != -ENOTTY && r != -EINVAL) {
if (ret == 0)
ret = r;
safe_close(subdir_fd);
continue;
}
- }
+ }
#endif // 0
/* We pass REMOVE_PHYSICAL here, to avoid
return -EPERM;
}
+#if 0 /// elogind does not support BTRFS this directly
if ((flags & (REMOVE_SUBVOLUME|REMOVE_ROOT|REMOVE_PHYSICAL)) == (REMOVE_SUBVOLUME|REMOVE_ROOT|REMOVE_PHYSICAL)) {
/* Try to remove as subvolume first */
-#if 0
- r = btrfs_subvol_remove(path, true);
+ r = btrfs_subvol_remove(path, BTRFS_REMOVE_RECURSIVE|BTRFS_REMOVE_QUOTA);
if (r >= 0)
return r;
if (r != -ENOTTY && r != -EINVAL && r != -ENOTDIR)
return r;
-#endif // 0
+
/* Not btrfs or not a subvolume */
}
+#endif // 0
fd = open(path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW|O_NOATIME);
if (fd < 0) {
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;
}