static
BOOLEAN
PvfsSysIsEmptyDir(
PSTR pszDirname
)
{
NTSTATUS ntError = STATUS_SUCCESS;
BOOLEAN isEmptyDir = TRUE;
DIR *pDir = NULL;
struct dirent *pDirEntry = NULL;
struct dirent dirEntry = { 0 };
ntError = PvfsSysOpenDir(pszDirname, &pDir);
BAIL_ON_NT_STATUS(ntError);
for (ntError = PvfsSysReadDir(pDir, &dirEntry, &pDirEntry);
pDirEntry;
ntError = PvfsSysReadDir(pDir, &dirEntry, &pDirEntry))
{
/* First check the error return */
BAIL_ON_NT_STATUS(ntError);
if (!LwRtlCStringIsEqual(pDirEntry->d_name, ".", FALSE) &&
!LwRtlCStringIsEqual(pDirEntry->d_name, "..", FALSE))
{
isEmptyDir = FALSE;
break;
}
}
error:
if (pDir)
{
PvfsSysCloseDir(pDir);
}
return NT_SUCCESS(ntError) ? isEmptyDir : FALSE;
}
static
NTSTATUS
PvfsSysRemoveDir(
PSTR pszDirname
)
{
NTSTATUS ntError = STATUS_SUCCESS;
DIR *pDir = NULL;
struct dirent *pDirEntry = NULL;
struct dirent dirEntry = { 0 };
PSTR pszPath = NULL;
PVFS_STAT streamDirStat = { 0 };
ntError = PvfsSysOpenDir(pszDirname, &pDir);
BAIL_ON_NT_STATUS(ntError);
for (ntError = PvfsSysReadDir(pDir, &dirEntry, &pDirEntry);
pDirEntry;
ntError = PvfsSysReadDir(pDir, &dirEntry, &pDirEntry))
{
/* First check the error return */
BAIL_ON_NT_STATUS(ntError);
memset(&streamDirStat, 0, sizeof(PVFS_STAT));
if (pszPath)
{
LwRtlCStringFree(&pszPath);
}
ntError = LwRtlCStringAllocatePrintf(
&pszPath,
"%s/%s",
pszDirname,
pDirEntry->d_name);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsSysStat(pszPath, &streamDirStat);
if (ntError == STATUS_SUCCESS)
{
if(S_ISDIR(streamDirStat.s_mode))
{
if (!LwRtlCStringIsEqual(pDirEntry->d_name, ".", FALSE) &&
!LwRtlCStringIsEqual(pDirEntry->d_name, "..", FALSE))
{
ntError = PvfsSysRemoveDir(pszPath);
BAIL_ON_NT_STATUS(ntError);
}
}
else
{
ntError = PvfsSysRemove(pszPath);
BAIL_ON_NT_STATUS(ntError);
}
}
else
{
// Squash the error is the stream directory did not exist
ntError = STATUS_SUCCESS;
}
}
ntError = PvfsSysCloseDir(pDir);
BAIL_ON_NT_STATUS(ntError);
pDir = NULL;
ntError = PvfsSysRemove(pszDirname);
BAIL_ON_NT_STATUS(ntError);
error:
if (pszPath)
{
LwRtlCStringFree(&pszPath);
}
if (pDir)
{
PvfsSysCloseDir(pDir);
}
return ntError;
}
static NTSTATUS
PvfsResolvePath(
PSTR *ppszResolvedPath,
PCSTR pszLookupPath
)
{
NTSTATUS ntError = STATUS_SUCCESS;
PSTR pszCursor = NULL;
PSTR pszComponent = NULL;
PSTR pszPath = NULL;
PVFS_STAT Stat = {0};
PSTR pszResolvedPath = NULL;
PSTR pszResWorkingPath = NULL;
PSTR pszWorkingPath = NULL;
DWORD Length = PATH_MAX;
DIR *pDir = NULL;
struct dirent *pDirEntry = NULL;
if (*pszLookupPath != '/') {
ntError = STATUS_INVALID_PARAMETER;
BAIL_ON_NT_STATUS(ntError);
}
ntError = RTL_ALLOCATE(&pszResolvedPath, CHAR, Length);
BAIL_ON_NT_STATUS(ntError);
ntError = RTL_ALLOCATE(&pszWorkingPath, CHAR, PATH_MAX);
BAIL_ON_NT_STATUS(ntError);
ntError = RtlCStringDuplicate(&pszPath, pszLookupPath);
BAIL_ON_NT_STATUS(ntError);
pszComponent = pszPath + 1;
while (pszComponent && (Length > 0))
{
pDir = NULL;
if ((pszCursor = strchr(pszComponent, '/')) != NULL) {
*pszCursor = '\0';
}
snprintf(pszWorkingPath, PATH_MAX-1, "%s/%s",
pszResolvedPath, pszComponent);
/* Try cache first */
ntError = PvfsPathCacheLookup(&pszResWorkingPath, pszWorkingPath);
if(ntError == STATUS_SUCCESS)
{
strncpy(pszResolvedPath, pszResWorkingPath, PATH_MAX-1);
Length = PATH_MAX - RtlCStringNumChars(pszResolvedPath);
RtlCStringFree(&pszResWorkingPath);
}
/* Maybe an exact match on disk? */
else if (PvfsSysStat(pszWorkingPath, &Stat) == STATUS_SUCCESS)
{
strncpy(pszResolvedPath, pszWorkingPath, PATH_MAX-1);
Length = PATH_MAX - RtlCStringNumChars(pszResolvedPath);
RtlCStringFree(&pszResWorkingPath);
ntError = PvfsPathCacheAdd(pszResolvedPath);
BAIL_ON_NT_STATUS(ntError);
}
/* Do the work ourselves */
else
{
/* Enumerate directory entries and look for a match */
ntError = PvfsSysOpenDir(pszResolvedPath, &pDir);
if (ntError == STATUS_NOT_A_DIRECTORY)
{
ntError = STATUS_OBJECT_PATH_NOT_FOUND;
}
BAIL_ON_NT_STATUS(ntError);
for(ntError = PvfsSysReadDir(pDir, &pDirEntry);
pDirEntry;
ntError = PvfsSysReadDir(pDir, &pDirEntry))
{
/* First check the error return */
BAIL_ON_NT_STATUS(ntError);
if (RtlCStringIsEqual(pszComponent, pDirEntry->d_name, FALSE)) {
break;
}
}
/* Did we find a match? */
if (!pDirEntry) {
/* Return code depends on whether the last component was
not found or if an intermediate component was invalid */
if (pszCursor == NULL)
{
ntError = STATUS_OBJECT_NAME_NOT_FOUND;
}
else
{
ntError = STATUS_OBJECT_PATH_NOT_FOUND;
}
BAIL_ON_NT_STATUS(ntError);
}
strncat(pszResolvedPath, "/", Length-1);
Length -= 1;
strncat(pszResolvedPath, pDirEntry->d_name, Length-1);
Length -= RtlCStringNumChars(pDirEntry->d_name);
ntError = PvfsSysCloseDir(pDir);
pDir = NULL;
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsPathCacheAdd(pszResolvedPath);
BAIL_ON_NT_STATUS(ntError);
}
/* Cleanup for next loop */
if (pszCursor) {
*pszCursor = '/';
}
if ((pszComponent = strchr(pszComponent, '/')) != NULL) {
pszComponent++;
}
}
/* Did we finish? */
if ((Length <= 0) && (pszComponent != NULL)) {
ntError = STATUS_NAME_TOO_LONG;
BAIL_ON_NT_STATUS(ntError);
}
*ppszResolvedPath = pszResolvedPath;
pszResolvedPath = NULL;
ntError = STATUS_SUCCESS;
cleanup:
RtlCStringFree(&pszPath);
RtlCStringFree(&pszWorkingPath);
RtlCStringFree(&pszResWorkingPath);
RtlCStringFree(&pszResolvedPath);
if (pDir) {
PvfsSysCloseDir(pDir);
}
return ntError;
error:
goto cleanup;
}
NTSTATUS
PvfsSysOpenByFileName(
OUT int *pFd,
OUT PBOOLEAN pbCreateOwnerFile,
IN PPVFS_FILE_NAME pFileName,
IN int iFlags,
IN mode_t Mode
)
{
NTSTATUS ntError = STATUS_SUCCESS;
int fd = -1;
int unixerr = 0;
PSTR pszFilename = NULL;
PVFS_STAT Stat = {0};
int Ownerfd = -1;
PSTR pszStreamDirectoryName = NULL;
PSTR pszMetadataPath = NULL;
BOOLEAN bCreateOwnerFile = FALSE;
// Need make sure the object (file/directory) exists
// Before non-default stream objects can be created
if (!PvfsIsDefaultStreamName(pFileName))
{
ntError = PvfsSysStat(pFileName->FileName, &Stat);
if (LW_STATUS_OBJECT_NAME_NOT_FOUND == ntError)
{
ntError = PvfsSysOpen(
&Ownerfd,
pFileName->FileName,
iFlags,
Mode);
if (STATUS_SUCCESS == ntError)
{
bCreateOwnerFile = TRUE;
}
}
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsLookupStreamDirectoryPath(&pszStreamDirectoryName,
pFileName);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsFileDirname(&pszMetadataPath,
pszStreamDirectoryName);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsSysOpenDir(pszMetadataPath, NULL);
if (LW_STATUS_OBJECT_NAME_NOT_FOUND == ntError)
{
// create meta data directory
ntError = PvfsSysMkDir(
pszMetadataPath,
(mode_t)gPvfsDriverConfig.CreateDirectoryMode);
BAIL_ON_NT_STATUS(ntError);
}
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsSysOpenDir(pszStreamDirectoryName, NULL);
if (LW_STATUS_OBJECT_NAME_NOT_FOUND == ntError)
{
// create stream directory for an object
ntError = PvfsSysMkDir(
pszStreamDirectoryName,
(mode_t)gPvfsDriverConfig.CreateDirectoryMode);
BAIL_ON_NT_STATUS(ntError);
}
BAIL_ON_NT_STATUS(ntError);
ntError = LwRtlCStringAllocatePrintf(
&pszFilename,
"%s/%s",
pszStreamDirectoryName,
PvfsGetCStringBaseStreamName(pFileName));
BAIL_ON_NT_STATUS(ntError);
}
else
{
ntError = LwRtlCStringDuplicate(&pszFilename,
PvfsGetCStringBaseFileName(pFileName));
BAIL_ON_NT_STATUS(ntError);
}
if ((fd = open(pszFilename, iFlags, Mode)) == -1) {
PVFS_BAIL_ON_UNIX_ERROR(unixerr, ntError);
}
*pFd = fd;
*pbCreateOwnerFile = bCreateOwnerFile;
cleanup:
if (pszFilename)
{
LwRtlCStringFree(&pszFilename);
}
if (pszStreamDirectoryName)
{
LwRtlCStringFree(&pszStreamDirectoryName);
}
if (pszMetadataPath)
{
LwRtlCStringFree(&pszMetadataPath);
}
if (Ownerfd != -1)
{
PvfsSysClose(Ownerfd);
}
return ntError;
error:
if (fd != -1)
{
PvfsSysClose(fd);
}
goto cleanup;
}
NTSTATUS
PvfsEnumerateDirectory(
PPVFS_CCB pCcb,
PIO_MATCH_FILE_SPEC pFileSpec,
LONG Count,
BOOLEAN bRescan
)
{
NTSTATUS ntError = STATUS_UNSUCCESSFUL;
DIR *pDir = NULL;
struct dirent *pDirEntry = NULL;
struct dirent dirEntry = { 0 };
PSTR pszPattern = NULL;
BOOLEAN bCaseSensitive = FALSE;
PSTR pszDiskFilename = NULL;
PVFS_STAT Stat = { 0 };
PSTR pszResolvedDirname = NULL;
PSTR pszResolvedFilename = NULL;
if (Count == 0)
{
ntError = STATUS_INVALID_PARAMETER;
BAIL_ON_NT_STATUS(ntError);
}
ntError = AllocateCStringFileSpec(&pszPattern, pFileSpec);
BAIL_ON_NT_STATUS(ntError);
if (bRescan)
{
if (pCcb->pDirContext->pDir)
{
PvfsSysCloseDir(pCcb->pDirContext->pDir);
}
PvfsFreeDirectoryContext(pCcb->pDirContext);
pCcb->pDirContext = NULL;
ntError = PvfsAllocateMemory(
(PVOID)&pCcb->pDirContext,
sizeof(PVFS_DIRECTORY_CONTEXT),
TRUE);
BAIL_ON_NT_STATUS(ntError);
pCcb->pDirContext->bScanned = FALSE;
}
if (!pCcb->pDirContext->bScanned)
{
if (!strchr(pszPattern, '?') && !strchr(pszPattern, '*'))
{
// A single file name match is the equivalent of a Windows Stat()
ntError = PvfsLookupFile(
&pszDiskFilename,
&Stat,
pCcb->pScb->pOwnerFcb->pszFilename,
pszPattern,
pFileSpec->Options & IO_NAME_OPTION_CASE_SENSITIVE);
BAIL_ON_NT_STATUS(ntError);
ntError = PvfsFileSplitPath(
&pszResolvedDirname,
&pszResolvedFilename,
pszDiskFilename);
BAIL_ON_NT_STATUS(ntError);
if (IsSetFlag(pCcb->Flags, PVFS_CCB_FLAG_ENABLE_ABE))
{
ntError = PvfsAccessCheckFileEnumerate(
pCcb,
pszResolvedFilename);
BAIL_ON_NT_STATUS(ntError);
}
ntError = PvfsDirContextAddEntry(
pCcb->pDirContext,
pszResolvedFilename);
BAIL_ON_NT_STATUS(ntError);
pCcb->pDirContext->bScanned = TRUE;
// Success
goto cleanup;
}
else
{
// Prepare to enumerate the entire directory
ntError = PvfsSysOpenDir(
pCcb->pScb->pOwnerFcb->pszFilename,
&pCcb->pDirContext->pDir);
BAIL_ON_NT_STATUS(ntError);
pCcb->pDirContext->bScanned = TRUE;
}
}
/* Loop to read entries */
pDir = pCcb->pDirContext->pDir;
/* -1 means to fill in whatever you can including current and
parent directory entries */
if (Count == -1)
{
/* Always add '.' and '..' first if thet match */
if (PvfsWildcardMatch(".", pszPattern, FALSE))
{
ntError = PvfsDirContextAddEntry(pCcb->pDirContext, ".");
BAIL_ON_NT_STATUS(ntError);
}
if (PvfsWildcardMatch("..", pszPattern, FALSE))
{
ntError = PvfsDirContextAddEntry(pCcb->pDirContext, "..");
BAIL_ON_NT_STATUS(ntError);
}
}
/* Loop through directory entries */
for(ntError = PvfsSysReadDir(pDir, &dirEntry, &pDirEntry);
pDirEntry && ((Count == -1) || (pCcb->pDirContext->dwNumEntries < Count));
ntError = PvfsSysReadDir(pDir, &dirEntry, &pDirEntry))
{
/* First check the error return */
BAIL_ON_NT_STATUS(ntError);
/* We've already added the "." and ".." directories */
if (RtlCStringIsEqual(pDirEntry->d_name, ".", FALSE) ||
RtlCStringIsEqual(pDirEntry->d_name, "..", FALSE))
{
continue;
}
if (PvfsWildcardMatch(pDirEntry->d_name, pszPattern, bCaseSensitive))
{
if (IsSetFlag(pCcb->Flags, PVFS_CCB_FLAG_ENABLE_ABE))
{
ntError = PvfsAccessCheckFileEnumerate(
pCcb,
pDirEntry->d_name);
if (ntError != STATUS_SUCCESS)
{
continue;
}
}
ntError = PvfsDirContextAddEntry(pCcb->pDirContext, pDirEntry->d_name);
BAIL_ON_NT_STATUS(ntError);
}
}
/* Bail if there were no matches */
if (pCcb->pDirContext->dwNumEntries == 0) {
ntError = STATUS_NO_SUCH_FILE;
BAIL_ON_NT_STATUS(ntError);
}
cleanup:
RtlCStringFree(&pszResolvedFilename);
RtlCStringFree(&pszResolvedDirname);
RtlCStringFree(&pszDiskFilename);
RtlCStringFree(&pszPattern);
return ntError;
error:
goto cleanup;
}
