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authorLennart Poettering <lennart@poettering.net>2015-01-20 03:00:07 +0100
committerLennart Poettering <lennart@poettering.net>2015-01-20 15:06:58 +0100
commit0d6e763b48cabe8899a20823b015c9a988e38659 (patch)
tree960c84d9046c927e4b6801766d2283a879e5a68b /src/shared/btrfs-util.c
parent56ebfaf1ca185a93ffb372b6e1a1fa3a957d93cd (diff)
import: port pull-raw to helper tools implemented for pull-tar
This allows us to reuse a lot more code, and simplify pull-raw drastically.
Diffstat (limited to 'src/shared/btrfs-util.c')
-rw-r--r--src/shared/btrfs-util.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/src/shared/btrfs-util.c b/src/shared/btrfs-util.c
index 254483c31a..b34ac8b15a 100644
--- a/src/shared/btrfs-util.c
+++ b/src/shared/btrfs-util.c
@@ -228,14 +228,18 @@ int btrfs_subvol_remove(const char *path) {
return 0;
}
-int btrfs_subvol_set_read_only(const char *path, bool b) {
- _cleanup_close_ int fd = -1;
+int btrfs_subvol_set_read_only_fd(int fd, bool b) {
uint64_t flags, nflags;
+ struct stat st;
- fd = open(path, O_RDONLY|O_NOCTTY|O_CLOEXEC);
- if (fd < 0)
+ assert(fd >= 0);
+
+ if (fstat(fd, &st) < 0)
return -errno;
+ if (!S_ISDIR(st.st_mode) || st.st_ino != 256)
+ return -EINVAL;
+
if (ioctl(fd, BTRFS_IOC_SUBVOL_GETFLAGS, &flags) < 0)
return -errno;
@@ -253,6 +257,16 @@ int btrfs_subvol_set_read_only(const char *path, bool b) {
return 0;
}
+int btrfs_subvol_set_read_only(const char *path, bool b) {
+ _cleanup_close_ int fd = -1;
+
+ 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;