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

2010-04-12 20:53:17 +00:00 · 2010-04-12 20:53:17 +00:00 · 8d5ce86fd6
commit 8d5ce86fd6
parent e42bcb8719
1 changed files with 1 additions and 0 deletions
--- a/sys/fs/msdosfs/msdosfs_vfsops.c
+++ b/sys/fs/msdosfs/msdosfs_vfsops.c
@ -580,6 +580,7 @@ mountmsdosfs(struct vnode *devvp, struct mount *mp)
 	  || (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;