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- Fixed the directory index of a file for FATX.
- Check for the file size before eache call to CcMapData. W2K doesnt like to map over the end of a directory. svn path=/trunk/; revision=13284
This commit is contained in:
parent
0d6305b3bc
commit
0bc04189e7
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@ -175,7 +175,8 @@ NTSTATUS FATGetNextDirEntry(PVOID * pContext,
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{
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{
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CcUnpinData(*pContext);
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CcUnpinData(*pContext);
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}
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}
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if (!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
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!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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{
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{
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*pContext = NULL;
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*pContext = NULL;
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return STATUS_NO_MORE_ENTRIES;
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return STATUS_NO_MORE_ENTRIES;
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@ -204,7 +205,8 @@ NTSTATUS FATGetNextDirEntry(PVOID * pContext,
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{
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{
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CcUnpinData(*pContext);
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CcUnpinData(*pContext);
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FileOffset.u.LowPart -= PAGE_SIZE;
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FileOffset.u.LowPart -= PAGE_SIZE;
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if (!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
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!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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{
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{
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CHECKPOINT;
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CHECKPOINT;
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*pContext = NULL;
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*pContext = NULL;
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@ -228,7 +230,8 @@ NTSTATUS FATGetNextDirEntry(PVOID * pContext,
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{
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{
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CcUnpinData(*pContext);
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CcUnpinData(*pContext);
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FileOffset.u.LowPart += PAGE_SIZE;
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FileOffset.u.LowPart += PAGE_SIZE;
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if (!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
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!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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{
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{
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CHECKPOINT;
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CHECKPOINT;
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*pContext = NULL;
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*pContext = NULL;
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@ -325,7 +328,8 @@ NTSTATUS FATGetNextDirEntry(PVOID * pContext,
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{
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{
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CcUnpinData(*pContext);
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CcUnpinData(*pContext);
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FileOffset.u.LowPart += PAGE_SIZE;
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FileOffset.u.LowPart += PAGE_SIZE;
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if (!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
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!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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{
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{
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CHECKPOINT;
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CHECKPOINT;
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*pContext = NULL;
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*pContext = NULL;
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@ -361,7 +365,6 @@ NTSTATUS FATXGetNextDirEntry(PVOID * pContext,
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ULONG DirIndex = DirContext->DirIndex;
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ULONG DirIndex = DirContext->DirIndex;
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FileOffset.u.HighPart = 0;
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FileOffset.u.HighPart = 0;
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FileOffset.u.LowPart = ROUND_DOWN(DirContext->DirIndex * sizeof(FATX_DIR_ENTRY), PAGE_SIZE);
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if (!vfatFCBIsRoot(pDirFcb))
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if (!vfatFCBIsRoot(pDirFcb))
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{
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{
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@ -403,7 +406,9 @@ NTSTATUS FATXGetNextDirEntry(PVOID * pContext,
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{
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{
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CcUnpinData(*pContext);
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CcUnpinData(*pContext);
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}
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}
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if (!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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FileOffset.u.LowPart = ROUND_DOWN(DirIndex * sizeof(FATX_DIR_ENTRY), PAGE_SIZE);
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if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
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!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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{
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{
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*pContext = NULL;
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*pContext = NULL;
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return STATUS_NO_MORE_ENTRIES;
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return STATUS_NO_MORE_ENTRIES;
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@ -412,33 +417,35 @@ NTSTATUS FATXGetNextDirEntry(PVOID * pContext,
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fatxDirEntry = (PFATX_DIR_ENTRY)(*pPage) + DirIndex % FATX_ENTRIES_PER_PAGE;
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fatxDirEntry = (PFATX_DIR_ENTRY)(*pPage) + DirIndex % FATX_ENTRIES_PER_PAGE;
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DirContext->StartIndex = DirIndex;
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DirContext->StartIndex = DirContext->DirIndex;
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while (TRUE)
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while (TRUE)
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{
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{
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if (FATX_ENTRY_END(fatxDirEntry))
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if (FATX_ENTRY_END(fatxDirEntry))
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{
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{
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CcUnpinData(*pContext);
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CcUnpinData(*pContext);
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*pContext = NULL;
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*pContext = NULL;
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return STATUS_NO_MORE_ENTRIES;
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return STATUS_NO_MORE_ENTRIES;
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}
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}
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if (!FATX_ENTRY_DELETED(fatxDirEntry))
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if (!FATX_ENTRY_DELETED(fatxDirEntry))
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{
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{
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RtlCopyMemory(&DirContext->DirEntry.FatX, fatxDirEntry, sizeof(FATX_DIR_ENTRY));
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RtlCopyMemory(&DirContext->DirEntry.FatX, fatxDirEntry, sizeof(FATX_DIR_ENTRY));
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break;
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break;
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}
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}
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DirContext->DirIndex++;
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DirContext->DirIndex++;
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DirContext->StartIndex++;
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DirContext->StartIndex++;
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if ((DirContext->DirIndex % FATX_ENTRIES_PER_PAGE) == 0)
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DirIndex++;
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if ((DirIndex % FATX_ENTRIES_PER_PAGE) == 0)
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{
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{
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CcUnpinData(*pContext);
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CcUnpinData(*pContext);
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FileOffset.u.LowPart += PAGE_SIZE;
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FileOffset.u.LowPart += PAGE_SIZE;
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if (!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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if (FileOffset.u.LowPart >= pDirFcb->RFCB.FileSize.u.LowPart ||
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!CcMapData(pDirFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, pPage))
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{
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{
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CHECKPOINT;
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CHECKPOINT;
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*pContext = NULL;
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*pContext = NULL;
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return STATUS_NO_MORE_ENTRIES;
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return STATUS_NO_MORE_ENTRIES;
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}
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}
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fatxDirEntry = (PFATX_DIR_ENTRY)*pPage;
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fatxDirEntry = (PFATX_DIR_ENTRY)*pPage;
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}
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}
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