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[VFATFS] Correctly init dirIndex/startIndex on FATX subdirectories

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'.' and '..' entries do not exist on FATX subdirectories. We have to fake them when
enumerating the directory, and ignore them when creating a FCB from a directory entry.

CORE-16373
This commit is contained in:
Hervé Poussineau 2022-09-13 23:32:01 +02:00 committed by hpoussin
parent 0979fb29e2
commit fa809fd2fe
1 changed files with 5 additions and 5 deletions
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10
drivers/filesystems/vfatfs/fcb.c
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@ -428,6 +428,7 @@ static
VOID
vfatInitFCBFromDirEntry(
PDEVICE_EXTENSION Vcb,
PVFATFCB ParentFcb,
PVFATFCB Fcb,
PVFAT_DIRENTRY_CONTEXT DirContext)
{
@ -476,7 +477,8 @@ vfatInitFCBFromDirEntry(
}
Fcb->dirIndex = DirContext->DirIndex;
Fcb->startIndex = DirContext->StartIndex;
if (vfatVolumeIsFatX(Vcb) && !vfatFCBIsRoot(Fcb))
Fcb->parentFcb = ParentFcb;
if (vfatVolumeIsFatX(Vcb) && !vfatFCBIsRoot(ParentFcb))
{
ASSERT(DirContext->DirIndex >= 2 && DirContext->StartIndex >= 2);
Fcb->dirIndex = DirContext->DirIndex-2;
@ -572,13 +574,12 @@ vfatUpdateFCB(
RemoveEntryList(&Fcb->ParentListEntry);
/* Reinit FCB */
vfatInitFCBFromDirEntry(pVCB, Fcb, DirContext);
vfatInitFCBFromDirEntry(pVCB, ParentFcb, Fcb, DirContext);
if (vfatFCBIsDirectory(Fcb))
{
CcFlushCache(&Fcb->SectionObjectPointers, NULL, 0, NULL);
}
Fcb->parentFcb = ParentFcb;
InsertTailList(&ParentFcb->ParentListHead, &Fcb->ParentListEntry);
vfatAddFCBToTable(pVCB, Fcb);
@ -739,10 +740,9 @@ vfatMakeFCBFromDirEntry(
}
rcFCB = vfatNewFCB(vcb, &NameU);
vfatInitFCBFromDirEntry(vcb, rcFCB, DirContext);
vfatInitFCBFromDirEntry(vcb, directoryFCB, rcFCB, DirContext);
rcFCB->RefCount = 1;
rcFCB->parentFcb = directoryFCB;
InsertTailList(&directoryFCB->ParentListHead, &rcFCB->ParentListEntry);
vfatAddFCBToTable(vcb, rcFCB);
*fileFCB = rcFCB;