Author: kib
Date: Sun Feb 28 17:15:45 2010
New Revision: 204472
URL: http://svn.freebsd.org/changeset/base/204472
Log:
Add assertions for FAT bitmap state.
Tested by: pho
MFC after: 3 weeks
Modified:
head/sys/fs/msdosfs/msdosfs_fat.c
Modified: head/sys/fs/msdosfs/msdosfs_fat.c
==============================================================================
--- head/sys/fs/msdosfs/msdosfs_fat.c Sun Feb 28 17:13:59 2010
(r204471)
+++ head/sys/fs/msdosfs/msdosfs_fat.c Sun Feb 28 17:15:45 2010
(r204472)
@@ -413,7 +413,12 @@ usemap_alloc(pmp, cn)
{
MSDOSFS_ASSERT_MP_LOCKED(pmp);
+
+ KASSERT((pmp->pm_inusemap[cn / N_INUSEBITS] & (1 << (cn % N_INUSEBITS)))
+ == 0, ("Allocating used sector %ld %ld %x", cn, cn % N_INUSEBITS,
+ (unsigned)pmp->pm_inusemap[cn / N_INUSEBITS]));
pmp->pm_inusemap[cn / N_INUSEBITS] |= 1 << (cn % N_INUSEBITS);
+ KASSERT(pmp->pm_freeclustercount > 0, ("usemap_alloc: too little"));
pmp->pm_freeclustercount--;
}
@@ -425,6 +430,9 @@ usemap_free(pmp, cn)
MSDOSFS_ASSERT_MP_LOCKED(pmp);
pmp->pm_freeclustercount++;
+ KASSERT((pmp->pm_inusemap[cn / N_INUSEBITS] & (1 << (cn % N_INUSEBITS)))
+ != 0, ("Freeing unused sector %ld %ld %x", cn, cn % N_INUSEBITS,
+ (unsigned)pmp->pm_inusemap[cn / N_INUSEBITS]));
pmp->pm_inusemap[cn / N_INUSEBITS] &= ~(1 << (cn % N_INUSEBITS));
}
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