NTSTATUS
PvfsFileDirname(
PSTR *ppszDirname,
PCSTR pszPath
)
{
NTSTATUS ntError = STATUS_UNSUCCESSFUL;
PSTR pszCursor = NULL;
PSTR pszNewString = NULL;
/* Case #1: No '/' so just return '.' */
if (((pszCursor = strrchr(pszPath, '/')) == NULL))
{
ntError = RtlCStringDuplicate(ppszDirname, ".");
goto cleanup;
}
/* Case #2: only one '/' (at beginning of path) */
if (pszCursor == pszPath) {
ntError = RtlCStringDuplicate(ppszDirname, "/");
goto cleanup;
}
/* Case #3: Real dirname and file name components */
ntError = RTL_ALLOCATE(&pszNewString, CHAR,
PVFS_PTR_DIFF(pszPath,pszCursor) + 1);
BAIL_ON_NT_STATUS(ntError);
RtlCopyMemory(pszNewString, pszPath, PVFS_PTR_DIFF(pszPath,pszCursor));
*ppszDirname = pszNewString;
ntError = STATUS_SUCCESS;
cleanup:
return ntError;
error:
goto cleanup;
}
static
NTSTATUS
PvfsNotifyReportBuffer(
PPVFS_NOTIFY_FILTER_BUFFER pFilterBuffer,
FILE_ACTION Action,
PCSTR pszFilename
)
{
NTSTATUS ntError = STATUS_UNSUCCESSFUL;
PVOID pBuffer = pFilterBuffer->pData + pFilterBuffer->Offset;
ULONG Length = pFilterBuffer->Length - pFilterBuffer->Offset;
PFILE_NOTIFY_INFORMATION pNotifyInfo = NULL;
LONG FilenameBytes = 0;
PWSTR pwszFilename = NULL;
ULONG BytesNeeded = 0;
/* Don't bother if we have already overflowed the buffer */
BAIL_ON_NT_STATUS(pFilterBuffer->Status);
ntError = LwRtlWC16StringAllocateFromCString(&pwszFilename, pszFilename);
BAIL_ON_NT_STATUS(ntError);
FilenameBytes = (LwRtlWC16StringNumChars(pwszFilename) + 1) * sizeof(WCHAR);
BytesNeeded = sizeof(*pNotifyInfo) + FilenameBytes;
PVFS_ALIGN_MEMORY(BytesNeeded, 8);
if (Length < BytesNeeded)
{
ntError = pFilterBuffer->Status = STATUS_NOTIFY_ENUM_DIR;
BAIL_ON_NT_STATUS(ntError);
}
pNotifyInfo = (PFILE_NOTIFY_INFORMATION)pBuffer;
pNotifyInfo->NextEntryOffset = 0;
pNotifyInfo->Action = Action;
pNotifyInfo->FileNameLength = FilenameBytes;
memcpy(&pNotifyInfo->FileName, pwszFilename, FilenameBytes);
if (pFilterBuffer->pNotify)
{
ULONG NextEntry = PVFS_PTR_DIFF(pFilterBuffer->pNotify, pNotifyInfo);
pFilterBuffer->pNotify->NextEntryOffset = NextEntry;
}
pFilterBuffer->pNotify = pNotifyInfo;
pFilterBuffer->Offset += BytesNeeded;
cleanup:
LwRtlWC16StringFree(&pwszFilename);
return ntError;
error:
goto cleanup;
}
