Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'for-6.7-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"One more fix that verifies that the snapshot source is a root, same
check is also done in user space but should be done by the ioctl as
well"
* tag 'for-6.7-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: do not allow non subvolume root targets for snapshot
+9
+9
fs/btrfs/ioctl.c
+9
fs/btrfs/ioctl.c
···
1290
1290
* are limited to own subvolumes only
1291
1291
*/
1292
1292
ret = -EPERM;
1293
+
} else if (btrfs_ino(BTRFS_I(src_inode)) != BTRFS_FIRST_FREE_OBJECTID) {
1294
+
/*
1295
+
* Snapshots must be made with the src_inode referring
1296
+
* to the subvolume inode, otherwise the permission
1297
+
* checking above is useless because we may have
1298
+
* permission on a lower directory but not the subvol
1299
+
* itself.
1300
+
*/
1301
+
ret = -EINVAL;
1293
1302
} else {
1294
1303
ret = btrfs_mksnapshot(&file->f_path, idmap,
1295
1304
name, namelen,