diff options
| -rw-r--r-- | ext2fs/dir.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ext2fs/dir.c b/ext2fs/dir.c index afdd23dc..cbb58d91 100644 --- a/ext2fs/dir.c +++ b/ext2fs/dir.c @@ -2,6 +2,8 @@ Copyright (C) 1994, 1995 Free Software Foundation, Inc. + Converted for ext2fs by Miles Bader <miles@gnu.ai.mit.edu> + This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at @@ -870,12 +872,29 @@ diskfs_get_directs (struct node *dp, i++; } + if (entryp->rec_len == 0) + { + ext2_warning ("diskfs_get_directs", + "Zero length directory entry: inode: %d offset: %ld", + dp->dn->number, + blkno * DIRBLKSIZ + bufp - buf); + return EIO; + } + bufp += entryp->rec_len; if (bufp - buf == DIRBLKSIZ) { blkno++; bufvalid = 0; } + else if (bufp - buf > DIRBLKSIZ) + { + ext2_warning ("diskfs_get_directs", + "Directory entry too long: inode: %d offset: %ld", + dp->dn->number, + blkno * DIRBLKSIZ + bufp - buf - entryp->rec_len); + return EIO; + } } /* We've copied all we can. If we allocated our own array |