diff options
Diffstat (limited to 'nuttx/fs/fs_seekdir.c')
| -rw-r--r-- | nuttx/fs/fs_seekdir.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/nuttx/fs/fs_seekdir.c b/nuttx/fs/fs_seekdir.c index 781d35f27..c49acef57 100644 --- a/nuttx/fs/fs_seekdir.c +++ b/nuttx/fs/fs_seekdir.c @@ -1,7 +1,7 @@ /**************************************************************************** * fs/fs_seekdir.c * - * Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved. + * Copyright (C) 2007, 2008, 2011, 2014 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -202,7 +202,12 @@ void seekdir(FAR DIR *dirp, off_t offset) { struct fs_dirent_s *idir = (struct fs_dirent_s *)dirp; - /* Sanity checks */ + /* Verify that we were provided with a valid directory structure, + * A special case is when we enumerate an "empty", unused inode (fd_root + * == 0). That is an inode in the pseudo-filesystem that has no + * operations and no children. This is a "dangling" directory entry that + * has lost its children. + */ if (!idir || !idir->fd_root) { |