Hi,
On Mon, Jun 6, 2011 at 4:36 PM, Theodore Ts'o <tytso@xxxxxxx> wrote:
> If user space attempts to unlink a non-existent file, and the file
> system is mounted read-only, return ENOENT instead of EROFS. Either
> error code is arguably valid/correct, but ENOENT is a more specific
> error message.
>
> Reported-by: Michael Tokarev <mjt@xxxxxxxxxx>
> Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
> ---
> fs/namei.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/namei.c b/fs/namei.c
> index 1ab641f..a9edbe0 100644
> --- a/fs/namei.c
> +++ b/fs/namei.c
> @@ -2708,9 +2708,9 @@ static long do_unlinkat(int dfd, const char __user *pathname)
> error = PTR_ERR(dentry);
> if (!IS_ERR(dentry)) {
> /* Why not before? Because we want correct error value */
> - if (nd.last.name[nd.last.len])
> - goto slashes;
> inode = dentry->d_inode;
> + if (nd.last.name[nd.last.len] || !inode)
> + goto slashes;
> if (inode)
> ihold(inode);
It seems to me that this conditional will now always be verified as
you jump to `slashes' whenever `inode' is NULL, no ?
- Arnaud
> error = mnt_want_write(nd.path.mnt);
> --
> 1.7.4.1.22.gec8e1.dirty
>
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