eCryptfs: remove retry loop in ecryptfs_readdir()

The retry block in ecryptfs_readdir() has been in the eCryptfs code base for a while, apparently for no good reason. This loop could potentially run without terminating. This patch removes the loop, instead erroring out if vfs_readdir() on the lower file fails. Signed-off-by: Michael Halcrow <[email protected]> Reported-by: Al Viro <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
ambv · Oct 16, 2008 · 7d6c704 · 7d6c704
1 parent 9d793b0
commit 7d6c704
Showing 1 changed file with 8 additions and 9 deletions.
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
@@ -71,12 +71,11 @@ struct ecryptfs_getdents_callback {
 	void *dirent;
 	struct dentry *dentry;
 	filldir_t filldir;
-	int err;
 	int filldir_called;
 	int entries_written;
 };
 
-/* Inspired by generic filldir in fs/readir.c */
+/* Inspired by generic filldir in fs/readdir.c */
 static int
 ecryptfs_filldir(void *dirent, const char *name, int namelen, loff_t offset,
 		 u64 ino, unsigned int d_type)
@@ -125,18 +124,18 @@ static int ecryptfs_readdir(struct file *file, void *dirent, filldir_t filldir)
 	buf.dirent = dirent;
 	buf.dentry = file->f_path.dentry;
 	buf.filldir = filldir;
-retry:
 	buf.filldir_called = 0;
 	buf.entries_written = 0;
-	buf.err = 0;
 	rc = vfs_readdir(lower_file, ecryptfs_filldir, (void *)&buf);
-	if (buf.err)
-		rc = buf.err;
-	if (buf.filldir_called && !buf.entries_written)
-		goto retry;
 	file->f_pos = lower_file->f_pos;
+	if (rc < 0)
+		goto out;
+	if (buf.filldir_called && !buf.entries_written)
+		goto out;
 	if (rc >= 0)
-		fsstack_copy_attr_atime(inode, lower_file->f_path.dentry->d_inode);
+		fsstack_copy_attr_atime(inode,
+					lower_file->f_path.dentry->d_inode);
+out:
 	return rc;
 }