Commit f20877d9 authored Jan 14, 2011 by J. R. Okajima Committed by Nick Piggin Jan 14, 2011

fs: fix do_last error case when need_reval_dot



When open(2) without O_DIRECTORY opens an existing dir, it should return
EISDIR. In do_last(), the variable 'error' is initialized EISDIR, but it
is changed by d_revalidate() which returns any positive to represent
'the target dir is valid.'

Should we keep and return the initialized 'error' in this case.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

parent 657e94b6

fs/namei.c

+6 −4

Original line number	Diff line number	Diff line
		@@ -2122,12 +2122,14 @@ static struct file do_last(struct nameidata nd, struct path *path,
		dir = nd->path.dentry;
		case LAST_DOT:
		if (need_reval_dot(dir)) {
		error = d_revalidate(nd->path.dentry, nd);
		if (!error)
		error = -ESTALE;
		if (error < 0)
		int status = d_revalidate(nd->path.dentry, nd);
		if (!status)
		status = -ESTALE;
		if (status < 0) {
		error = status;
		goto exit;
		}
		}
		/* fallthrough */
		case LAST_ROOT:
		goto exit;