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When a cluster entry for ``.'' is set to 0, msdosfs fails to handle it

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correctly.

PR:		24393
Submitted by:	semenu
Approved by:	rwatson (mentor)
MFC after:	1 week
This commit is contained in:
trhodes 2002-08-16 05:13:42 +00:00
parent fc04ab53c9
commit abb7e5b790
1 changed files with 11 additions and 0 deletions
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11
sys/fs/msdosfs/msdosfs_denode.c
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@ -356,6 +356,17 @@ deget(pmp, dirclust, diroffset, depp)
*/ */
u_long size; u_long size;
/*
* XXX Sometimes, these arrives that . entry have cluster
* number 0, when it shouldn't. Use real cluster number
* instead of what is written in directory entry.
*/
if ((diroffset == 0) && (ldep->de_StartCluster != dirclust)) {
printf("deget(): . entry at clust %ld != %ld\n",
dirclust, ldep->de_StartCluster);
ldep->de_StartCluster = dirclust;
}
nvp->v_type = VDIR; nvp->v_type = VDIR;
if (ldep->de_StartCluster != MSDOSFSROOT) { if (ldep->de_StartCluster != MSDOSFSROOT) {
error = pcbmap(ldep, 0xffff, 0, &size, 0); error = pcbmap(ldep, 0xffff, 0, &size, 0);