svn commit: r206502 - stable/8/sys/fs/msdosfs

[Andriy Gapon]

Author: avg
Date: Mon Apr 12 20:53:17 2010
New Revision: 206502
URL: http://svn.freebsd.org/changeset/base/206502

Log:
  MFC r206098: mountmsdosfs: reject too high value of bytes per cluster

Modified:
  stable/8/sys/fs/msdosfs/msdosfs_vfsops.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/fs/msdosfs/msdosfs_vfsops.c
==============================================================================
--- stable/8/sys/fs/msdosfs/msdosfs_vfsops.c	Mon Apr 12 18:28:08 2010	(r206501)
+++ stable/8/sys/fs/msdosfs/msdosfs_vfsops.c	Mon Apr 12 20:53:17 2010	(r206502)
@@ -580,6 +580,7 @@ mountmsdosfs(struct vnode *devvp, struct
 	  || (pmp->pm_BytesPerSec & (pmp->pm_BytesPerSec - 1))
 	  || (pmp->pm_HugeSectors == 0)
 	  || (pmp->pm_FATsecs == 0)
+	  || (SecPerClust * pmp->pm_BlkPerSec > MAXBSIZE / DEV_BSIZE)
 	) {
 		error = EINVAL;
 		goto error_exit;