Hi,
thanks for the patch!
On Tue, Feb 21, 2012 at 05:04:28PM +0800, Li Zefan wrote:
> Follow those instructions, and you'll trigger a warning in the
> beginning of d_set_d_op():
>
> # mkfs.btrfs /dev/loop3
> # mount /dev/loop3 /mnt
> # btrfs sub create /mnt/sub
> # btrfs sub snap /mnt /mnt/snap
> # touch /mnt/snap/sub
> touch: cannot touch `tmp': Permission denied
is this the right error code? permission denied == EACCESS and this is
returned in case of file
(strace touch file)
open("file", O_WRONLY|O_CREAT|O_NOCTTY|O_NONBLOCK, 0666) = -1 EACCES (Permission denied)
while mkdir returns (strace mkdir a-dir)
mkdir("a-dir", 0777) = -1 EPERM (Operation not permitted)
The commands were run as root and EPERM looks more adequate than
EACCESS.
david
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