shaba/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd.git synced 2025-01-11 09:18:07 +03:00
Code

btrfs-util: Add btrfs_subvol_set_read_only_at()

Browse Source
This commit is contained in:
Daan De Meyer 2023-06-01 14:43:30 +02:00
parent 5124aa8c03
commit 77c66be37b
2 changed files with 15 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/shared/btrfs-util.c
View File

@ -152,11 +152,16 @@ int btrfs_subvol_make_fallback(const char *path, mode_t mode) {
return 0; /* plain directory */
}
int btrfs_subvol_set_read_only_fd(int fd, bool b) {
int btrfs_subvol_set_read_only_at(int dir_fd, const char *path, bool b) {
_cleanup_close_ int fd = -EBADF;
uint64_t flags, nflags;
struct stat st;
assert(fd >= 0);
assert(dir_fd >= 0 || dir_fd == AT_FDCWD);
fd = xopenat(dir_fd, path, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY, /* xopen_flags = */ 0, /* mode = */ 0);
if (fd < 0)
return fd;
if (fstat(fd, &st) < 0)
return -errno;
@ -174,16 +179,6 @@ int btrfs_subvol_set_read_only_fd(int fd, bool b) {
return RET_NERRNO(ioctl(fd, BTRFS_IOC_SUBVOL_SETFLAGS, &nflags));
}
int btrfs_subvol_set_read_only(const char *path, bool b) {
_cleanup_close_ int fd = -EBADF;
fd = open(path, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY);
if (fd < 0)
return -errno;
return btrfs_subvol_set_read_only_fd(fd, b);
}
int btrfs_subvol_get_read_only_fd(int fd) {
uint64_t flags;
struct stat st;

10
src/shared/btrfs-util.h
View File

@ -89,8 +89,14 @@ static inline int btrfs_subvol_remove(const char *path, BtrfsRemoveFlags flags)
return btrfs_subvol_remove_at(AT_FDCWD, path, flags);
}
int btrfs_subvol_set_read_only_fd(int fd, bool b);
int btrfs_subvol_set_read_only(const char *path, bool b);
int btrfs_subvol_set_read_only_at(int dir_fd, const char *path, bool b);
static inline int btrfs_subvol_set_read_only_fd(int fd, bool b) {
return btrfs_subvol_set_read_only_at(fd, NULL, b);
}
static inline int btrfs_subvol_set_read_only(const char *path, bool b) {
return btrfs_subvol_set_read_only_at(AT_FDCWD, path, b);
}
int btrfs_subvol_get_read_only_fd(int fd);
int btrfs_subvol_get_id(int fd, const char *subvolume, uint64_t *ret);