NTSTATUS
PvfsCcbQueryFileBasicInformation(
PPVFS_CCB pCcb,
PFILE_BASIC_INFORMATION pFileInfo
)
{
NTSTATUS ntError = STATUS_SUCCESS;
PVFS_STAT Stat = {0};
PVFS_FILE_NAME baseObjectFileName = { 0 };
if (PvfsIsDefaultStream(pCcb->pScb))
{
ntError = PvfsGetFileAttributes(pCcb, &pFileInfo->FileAttributes);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsSysFstat(pCcb->fd, &Stat);
BAIL_ON_NT_STATUS(ntError);
}
else
{
// Named Streams share meta-data with the owning FCB
ntError = PvfsBuildFileNameFromCString(
&baseObjectFileName,
pCcb->pScb->pOwnerFcb->pszFilename,
0);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsGetFilenameAttributes(
PvfsGetCStringBaseFileName(&baseObjectFileName),
&pFileInfo->FileAttributes);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsSysStatByFileName(&baseObjectFileName, &Stat);
BAIL_ON_NT_STATUS(ntError);
}
ntError = PvfsUnixToWinTime(&pFileInfo->LastAccessTime, Stat.s_atime);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsUnixToWinTime(&pFileInfo->LastWriteTime, Stat.s_mtime);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsUnixToWinTime(&pFileInfo->ChangeTime, Stat.s_ctime);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsUnixToWinTime(&pFileInfo->CreationTime, Stat.s_crtime);
BAIL_ON_NT_STATUS(ntError);
error:
PvfsDestroyFileName(&baseObjectFileName);
return ntError;
}
NTSTATUS
PvfsCheckDeleteOnClose(
IN IRP_ARGS_CREATE CreateArgs,
IN PSTR pszFilename,
IN ACCESS_MASK GrantedAccess
)
{
NTSTATUS ntError = STATUS_SUCCESS;
FILE_ATTRIBUTES Attributes = 0;
if (!(CreateArgs.CreateOptions & FILE_DELETE_ON_CLOSE)) {
goto cleanup;
}
if (!(GrantedAccess & DELETE))
{
ntError = STATUS_ACCESS_DENIED;
BAIL_ON_NT_STATUS(ntError);
}
/* ReadOnly is largely ignored by the file system on directories.
It is used by the Windows explorer.exe to mark folders as "special" */
if (CreateArgs.CreateOptions & FILE_DIRECTORY_FILE)
{
ntError = STATUS_SUCCESS;
goto cleanup;
}
/* Dealing with files from here down */
if (pszFilename)
{
ntError = PvfsGetFilenameAttributes(
pszFilename,
&Attributes);
BAIL_ON_NT_STATUS(ntError);
}
switch (CreateArgs.CreateDisposition)
{
case FILE_OPEN:
case FILE_OPEN_IF:
case FILE_SUPERSEDE:
case FILE_CREATE:
if (pszFilename)
{
if (Attributes & FILE_ATTRIBUTE_READONLY)
{
ntError = STATUS_CANNOT_DELETE;
BAIL_ON_NT_STATUS(ntError);
}
}
else
{
if (CreateArgs.FileAttributes & FILE_ATTRIBUTE_READONLY)
{
ntError = STATUS_CANNOT_DELETE;
BAIL_ON_NT_STATUS(ntError);
}
}
break;
case FILE_OVERWRITE:
case FILE_OVERWRITE_IF:
if (pszFilename && (CreateArgs.FileAttributes == 0))
{
if (Attributes & FILE_ATTRIBUTE_READONLY)
{
ntError = STATUS_CANNOT_DELETE;
BAIL_ON_NT_STATUS(ntError);
}
}
else
{
if (CreateArgs.FileAttributes & FILE_ATTRIBUTE_READONLY)
{
ntError = STATUS_CANNOT_DELETE;
BAIL_ON_NT_STATUS(ntError);
}
}
break;
}
ntError = STATUS_SUCCESS;
cleanup:
return ntError;
error:
goto cleanup;
}
static NTSTATUS
FillFileIdFullDirInfoBuffer(
PVOID pBuffer,
DWORD dwBufLen,
PSTR pszParent,
PPVFS_DIRECTORY_ENTRY pEntry,
PDWORD pdwConsumed
)
{
NTSTATUS ntError = STATUS_UNSUCCESSFUL;
PFILE_ID_FULL_DIR_INFORMATION pFileInfo = (PFILE_ID_FULL_DIR_INFORMATION)pBuffer;
PWSTR pwszFilename = NULL;
PSTR pszFullPath = NULL;
DWORD dwNeeded = 0;
size_t W16FilenameLen = 0;
size_t W16FilenameLenBytes = 0;
/* Check for enough space for static members */
if (dwBufLen < sizeof(*pFileInfo))
{
ntError = STATUS_BUFFER_TOO_SMALL;
BAIL_ON_NT_STATUS(ntError);
}
/* Build the absolute path and stat() it */
ntError = RtlCStringAllocatePrintf(
&pszFullPath,
"%s/%s",
pszParent,
pEntry->pszFilename);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsSysStat(pszFullPath, &pEntry->Stat);
BAIL_ON_NT_STATUS(ntError);
ntError = RtlWC16StringAllocateFromCString(
&pwszFilename,
pEntry->pszFilename);
BAIL_ON_NT_STATUS(ntError);
ntError = FillFileIdFullDirInfoStatic(
pFileInfo,
pwszFilename,
&pEntry->Stat);
BAIL_ON_NT_STATUS(ntError);
/* We have more information here to fill in the
file attributes */
ntError = PvfsGetFilenameAttributes(
pszFullPath,
&pFileInfo->FileAttributes);
BAIL_ON_NT_STATUS(ntError);
/* Save what we have used so far */
*pdwConsumed = sizeof(*pFileInfo);
/* Calculate space */
W16FilenameLen = RtlWC16StringNumChars(pwszFilename);
W16FilenameLenBytes = W16FilenameLen * sizeof(WCHAR);
dwNeeded = sizeof(*pFileInfo) + W16FilenameLenBytes;
/* alignment on 8 byte boundary */
if (dwNeeded % 8) {
dwNeeded += 8 - (dwNeeded % 8);
}
if (dwNeeded > dwBufLen)
{
ntError = STATUS_BUFFER_TOO_SMALL;
BAIL_ON_NT_STATUS(ntError);
}
pFileInfo->FileNameLength = W16FilenameLenBytes;
memcpy(pFileInfo->FileName, pwszFilename, W16FilenameLenBytes);
*pdwConsumed = dwNeeded;
ntError = STATUS_SUCCESS;
cleanup:
RtlCStringFree(&pszFullPath);
RtlWC16StringFree(&pwszFilename);
return ntError;
error:
goto cleanup;
}