BOOL
BrLockNetworkShared(
IN PNETWORK Network,
IN PCHAR FileName,
IN ULONG LineNumber
)
{
PCHAR File;
File = strrchr(FileName, '\\');
if (File == NULL) {
File = FileName;
}
dprintf(LOCKS, ("Acquring lock %s:%d on network %ws\n", File, LineNumber, (Network)->NetworkName.Buffer));
if (!RtlAcquireResourceShared(&(Network)->Lock, TRUE)) {
dprintf(LOCKS, ("Failed to acquire lock %s:%d on network %ws\n", File, LineNumber, (Network)->NetworkName.Buffer));
return FALSE;
} else {
// Use InterlockedIncrement since we only have a shared lock on the
// resource.
InterlockedIncrement( &Network->LockCount );
dprintf(LOCKS, ("Lock %s:%d on network %ws acquired\n", File, LineNumber, (Network)->NetworkName.Buffer));
}
return TRUE;
}
/* Function 5 */
NTSTATUS
ElfrOldestRecord(
IELF_HANDLE LogHandle,
PULONG OldestRecordNumber)
{
PLOGHANDLE pLogHandle;
PLOGFILE pLogFile;
pLogHandle = ElfGetLogHandleEntryByHandle(LogHandle);
if (!pLogHandle)
return STATUS_INVALID_HANDLE;
if (!OldestRecordNumber)
return STATUS_INVALID_PARAMETER;
pLogFile = pLogHandle->LogFile;
/* Lock the log file shared */
RtlAcquireResourceShared(&pLogFile->Lock, TRUE);
*OldestRecordNumber = ElfGetOldestRecord(&pLogFile->LogFile);
/* Unlock the log file */
RtlReleaseResource(&pLogFile->Lock);
return STATUS_SUCCESS;
}
DWORD CALLBACK DSOUND_mixthread(void *p)
{
DirectSoundDevice *dev = p;
TRACE("(%p)\n", dev);
while (dev->ref) {
DWORD ret;
/*
* Some audio drivers are retarded and won't fire after being
* stopped, add a timeout to handle this.
*/
ret = WaitForSingleObject(dev->sleepev, dev->sleeptime);
if (ret == WAIT_FAILED)
WARN("wait returned error %u %08x!\n", GetLastError(), GetLastError());
else if (ret != WAIT_OBJECT_0)
WARN("wait returned %08x!\n", ret);
if (!dev->ref)
break;
RtlAcquireResourceShared(&(dev->buffer_list_lock), TRUE);
DSOUND_PerformMix(dev);
RtlReleaseResource(&(dev->buffer_list_lock));
}
return 0;
}
void CALLBACK DSOUND_timer(UINT timerID, UINT msg, DWORD_PTR dwUser,
DWORD_PTR dw1, DWORD_PTR dw2)
{
DirectSoundDevice * device = (DirectSoundDevice*)dwUser;
DWORD start_time = GetTickCount();
DWORD end_time;
TRACE("(%d,%d,0x%lx,0x%lx,0x%lx)\n",timerID,msg,dwUser,dw1,dw2);
TRACE("entering at %d\n", start_time);
if (DSOUND_renderer[device->drvdesc.dnDevNode] != device) {
ERR("dsound died without killing us?\n");
timeKillEvent(timerID);
timeEndPeriod(DS_TIME_RES);
return;
}
RtlAcquireResourceShared(&(device->buffer_list_lock), TRUE);
if (device->ref)
DSOUND_PerformMix(device);
RtlReleaseResource(&(device->buffer_list_lock));
end_time = GetTickCount();
TRACE("completed processing at %d, duration = %d\n", end_time, end_time - start_time);
}
static int wine_pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
{
if (!((wine_rwlock)rwlock)->lock)
rwlock_real_init( rwlock );
if (!RtlAcquireResourceShared(((wine_rwlock)rwlock)->lock, FALSE)) return EBUSY;
return 0;
}
static int wine_pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
{
if (!((wine_rwlock)rwlock)->lock)
rwlock_real_init( rwlock );
while(TRUE)
if (RtlAcquireResourceShared(((wine_rwlock)rwlock)->lock, TRUE))
return 0;
}
static DWORD DSOUND_MixToPrimary(const DirectSoundDevice *device, DWORD writepos, DWORD mixlen, BOOL mustlock, BOOL recover, BOOL *all_stopped)
{
INT i, len;
DWORD minlen = 0;
IDirectSoundBufferImpl *dsb;
BOOL gotall = TRUE;
/* unless we find a running buffer, all have stopped */
*all_stopped = TRUE;
TRACE("(%d,%d,%d)\n", writepos, mixlen, recover);
for (i = 0; i < device->nrofbuffers; i++) {
dsb = device->buffers[i];
TRACE("MixToPrimary for %p, state=%d\n", dsb, dsb->state);
if (dsb->buflen && dsb->state && !dsb->hwbuf) {
TRACE("Checking %p, mixlen=%d\n", dsb, mixlen);
if (!RtlAcquireResourceShared(&dsb->lock, mustlock))
{
gotall = FALSE;
continue;
}
/* if buffer is stopping it is stopped now */
if (dsb->state == STATE_STOPPING) {
dsb->state = STATE_STOPPED;
DSOUND_CheckEvent(dsb, 0, 0);
} else if (dsb->state != STATE_STOPPED) {
/* if recovering, reset the mix position */
if ((dsb->state == STATE_STARTING) || recover) {
dsb->primary_mixpos = writepos;
}
/* if the buffer was starting, it must be playing now */
if (dsb->state == STATE_STARTING)
dsb->state = STATE_PLAYING;
/* mix next buffer into the main buffer */
len = DSOUND_MixOne(dsb, writepos, mixlen);
if (!minlen) minlen = len;
/* record the minimum length mixed from all buffers */
/* we only want to return the length which *all* buffers have mixed */
else if (len) minlen = (len < minlen) ? len : minlen;
*all_stopped = FALSE;
}
RtlReleaseResource(&dsb->lock);
}
}
TRACE("Mixed at least %d from all buffers\n", minlen);
if (!gotall) return 0;
return minlen;
}
NTSTATUS
LogfBackupFile(PLOGFILE LogFile,
PUNICODE_STRING BackupFileName)
{
NTSTATUS Status;
LOGFILE BackupLogFile;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatusBlock;
DPRINT1("LogfBackupFile(%p, %wZ)\n", LogFile, BackupFileName);
/* Lock the log file shared */
RtlAcquireResourceShared(&LogFile->Lock, TRUE);
InitializeObjectAttributes(&ObjectAttributes,
BackupFileName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtCreateFile(&BackupLogFile.FileHandle,
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
&ObjectAttributes,
&IoStatusBlock,
NULL,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_READ,
FILE_CREATE,
FILE_WRITE_THROUGH | FILE_SYNCHRONOUS_IO_NONALERT,
NULL,
0);
if (!NT_SUCCESS(Status))
{
DPRINT("Cannot create backup file `%wZ' (Status 0x%08lx)\n", BackupFileName, Status);
goto Quit;
}
Status = ElfBackupFile(&LogFile->LogFile,
&BackupLogFile.LogFile);
Quit:
/* Close the backup file */
if (BackupLogFile.FileHandle != NULL)
NtClose(BackupLogFile.FileHandle);
/* Unlock the log file */
RtlReleaseResource(&LogFile->Lock);
return Status;
}
/* Function 22 */
NTSTATUS
ElfrGetLogInformation(
IELF_HANDLE LogHandle,
ULONG InfoLevel,
PBYTE Buffer,
ULONG cbBufSize,
PULONG pcbBytesNeeded)
{
NTSTATUS Status = STATUS_SUCCESS;
PLOGHANDLE pLogHandle;
PLOGFILE pLogFile;
pLogHandle = ElfGetLogHandleEntryByHandle(LogHandle);
if (!pLogHandle)
return STATUS_INVALID_HANDLE;
pLogFile = pLogHandle->LogFile;
/* Lock the log file shared */
RtlAcquireResourceShared(&pLogFile->Lock, TRUE);
switch (InfoLevel)
{
case EVENTLOG_FULL_INFO:
{
LPEVENTLOG_FULL_INFORMATION efi = (LPEVENTLOG_FULL_INFORMATION)Buffer;
*pcbBytesNeeded = sizeof(EVENTLOG_FULL_INFORMATION);
if (cbBufSize < sizeof(EVENTLOG_FULL_INFORMATION))
{
Status = STATUS_BUFFER_TOO_SMALL;
break;
}
efi->dwFull = !!(ElfGetFlags(&pLogFile->LogFile) & ELF_LOGFILE_LOGFULL_WRITTEN);
break;
}
default:
Status = STATUS_INVALID_LEVEL;
break;
}
/* Unlock the log file */
RtlReleaseResource(&pLogFile->Lock);
return Status;
}
/* Function 4 */
NTSTATUS
ElfrNumberOfRecords(
IELF_HANDLE LogHandle,
PULONG NumberOfRecords)
{
PLOGHANDLE pLogHandle;
PLOGFILE pLogFile;
ULONG OldestRecordNumber, CurrentRecordNumber;
DPRINT("ElfrNumberOfRecords()\n");
pLogHandle = ElfGetLogHandleEntryByHandle(LogHandle);
if (!pLogHandle)
return STATUS_INVALID_HANDLE;
if (!NumberOfRecords)
return STATUS_INVALID_PARAMETER;
pLogFile = pLogHandle->LogFile;
/* Lock the log file shared */
RtlAcquireResourceShared(&pLogFile->Lock, TRUE);
OldestRecordNumber = ElfGetOldestRecord(&pLogFile->LogFile);
CurrentRecordNumber = ElfGetCurrentRecord(&pLogFile->LogFile);
/* Unlock the log file */
RtlReleaseResource(&pLogFile->Lock);
DPRINT("Oldest: %lu Current: %lu\n",
OldestRecordNumber, CurrentRecordNumber);
if (OldestRecordNumber == 0)
{
/* OldestRecordNumber == 0 when the log is empty */
*NumberOfRecords = 0;
}
else
{
/* The log contains events */
*NumberOfRecords = CurrentRecordNumber - OldestRecordNumber;
}
return STATUS_SUCCESS;
}
void CALLBACK DSOUND_timer(UINT timerID, UINT msg, DWORD_PTR dwUser,
DWORD_PTR dw1, DWORD_PTR dw2)
{
DirectSoundDevice * device = (DirectSoundDevice*)dwUser;
DWORD start_time = GetTickCount();
DWORD end_time;
TRACE("(%d,%d,0x%lx,0x%lx,0x%lx)\n",timerID,msg,dwUser,dw1,dw2);
TRACE("entering at %d\n", start_time);
RtlAcquireResourceShared(&(device->buffer_list_lock), TRUE);
if (device->ref)
DSOUND_PerformMix(device);
RtlReleaseResource(&(device->buffer_list_lock));
end_time = GetTickCount();
TRACE("completed processing at %d, duration = %d\n", end_time, end_time - start_time);
}
static void DSOUND_MixToPrimary(const DirectSoundDevice *device, DWORD writepos, DWORD mixlen, BOOL recover, BOOL *all_stopped)
{
INT i;
IDirectSoundBufferImpl *dsb;
/* unless we find a running buffer, all have stopped */
*all_stopped = TRUE;
TRACE("(%d,%d,%d)\n", writepos, mixlen, recover);
for (i = 0; i < device->nrofbuffers; i++) {
dsb = device->buffers[i];
TRACE("MixToPrimary for %p, state=%d\n", dsb, dsb->state);
if (dsb->buflen && dsb->state) {
TRACE("Checking %p, mixlen=%d\n", dsb, mixlen);
RtlAcquireResourceShared(&dsb->lock, TRUE);
/* if buffer is stopping it is stopped now */
if (dsb->state == STATE_STOPPING) {
dsb->state = STATE_STOPPED;
DSOUND_CheckEvent(dsb, 0, 0);
} else if (dsb->state != STATE_STOPPED) {
/* if the buffer was starting, it must be playing now */
if (dsb->state == STATE_STARTING)
dsb->state = STATE_PLAYING;
/* mix next buffer into the main buffer */
DSOUND_MixOne(dsb, writepos, mixlen);
*all_stopped = FALSE;
}
RtlReleaseResource(&dsb->lock);
}
}
}
DWORD LogfReadEvent(PLOGFILE LogFile,
DWORD Flags,
DWORD * RecordNumber,
DWORD BufSize,
PBYTE Buffer,
DWORD * BytesRead,
DWORD * BytesNeeded,
BOOL Ansi)
{
DWORD dwOffset, dwRead, dwRecSize;
DWORD dwBufferUsage = 0, dwRecNum;
if (Flags & EVENTLOG_FORWARDS_READ && Flags & EVENTLOG_BACKWARDS_READ)
return ERROR_INVALID_PARAMETER;
if (!(Flags & EVENTLOG_FORWARDS_READ) && !(Flags & EVENTLOG_BACKWARDS_READ))
return ERROR_INVALID_PARAMETER;
if (!Buffer || !BytesRead || !BytesNeeded)
return ERROR_INVALID_PARAMETER;
if ((*RecordNumber==0) && !(EVENTLOG_SEQUENTIAL_READ))
{
return ERROR_INVALID_PARAMETER;
}
dwRecNum = *RecordNumber;
RtlAcquireResourceShared(&LogFile->Lock, TRUE);
*BytesRead = 0;
*BytesNeeded = 0;
dwOffset = LogfOffsetByNumber(LogFile, dwRecNum);
if (!dwOffset)
{
RtlReleaseResource(&LogFile->Lock);
return ERROR_HANDLE_EOF;
}
if (SetFilePointer(LogFile->hFile, dwOffset, NULL, FILE_BEGIN) ==
INVALID_SET_FILE_POINTER)
{
DPRINT1("SetFilePointer() failed!\n");
goto Done;
}
if (!ReadFile(LogFile->hFile, &dwRecSize, sizeof(DWORD), &dwRead, NULL))
{
DPRINT1("ReadFile() failed!\n");
goto Done;
}
if (dwRecSize > BufSize)
{
*BytesNeeded = dwRecSize;
RtlReleaseResource(&LogFile->Lock);
return ERROR_INSUFFICIENT_BUFFER;
}
if (SetFilePointer(LogFile->hFile,
-((LONG) sizeof(DWORD)),
NULL,
FILE_CURRENT) == INVALID_SET_FILE_POINTER)
{
DPRINT1("SetFilePointer() failed!\n");
goto Done;
}
if (Ansi == TRUE)
{
if (!ReadAnsiLogEntry(LogFile->hFile, Buffer, dwRecSize, &dwRead))
{
DPRINT1("ReadAnsiLogEntry() failed!\n");
goto Done;
}
}
else
{
if (!ReadFile(LogFile->hFile, Buffer, dwRecSize, &dwRead, NULL))
{
DPRINT1("ReadFile() failed!\n");
goto Done;
}
}
dwBufferUsage += dwRead;
while (dwBufferUsage <= BufSize)
{
if (Flags & EVENTLOG_FORWARDS_READ)
dwRecNum++;
else
dwRecNum--;
dwOffset = LogfOffsetByNumber(LogFile, dwRecNum);
if (!dwOffset)
break;
if (SetFilePointer(LogFile->hFile, dwOffset, NULL, FILE_BEGIN) ==
INVALID_SET_FILE_POINTER)
{
DPRINT1("SetFilePointer() failed!\n");
goto Done;
}
if (!ReadFile(LogFile->hFile,
&dwRecSize,
sizeof(DWORD),
&dwRead,
NULL))
{
DPRINT1("ReadFile() failed!\n");
goto Done;
}
if (dwBufferUsage + dwRecSize > BufSize)
break;
if (SetFilePointer(LogFile->hFile,
-((LONG) sizeof(DWORD)),
NULL,
FILE_CURRENT) == INVALID_SET_FILE_POINTER)
{
DPRINT1("SetFilePointer() failed!\n");
goto Done;
}
if (Ansi == TRUE)
{
if (!ReadAnsiLogEntry(LogFile->hFile,
Buffer + dwBufferUsage,
dwRecSize,
&dwRead))
{
DPRINT1("ReadAnsiLogEntry() failed!\n");
goto Done;
}
}
else
{
if (!ReadFile(LogFile->hFile,
Buffer + dwBufferUsage,
dwRecSize,
&dwRead,
NULL))
{
DPRINT1("ReadFile() failed!\n");
goto Done;
}
}
dwBufferUsage += dwRead;
}
*BytesRead = dwBufferUsage;
* RecordNumber = dwRecNum;
RtlReleaseResource(&LogFile->Lock);
return ERROR_SUCCESS;
Done:
DPRINT1("LogfReadEvent failed with %x\n",GetLastError());
RtlReleaseResource(&LogFile->Lock);
return GetLastError();
}
NTSTATUS
LogfBackupFile(PLOGFILE LogFile,
PUNICODE_STRING BackupFileName)
{
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatusBlock;
EVENTLOGHEADER Header;
EVENTLOGEOF EofRec;
HANDLE FileHandle = NULL;
ULONG i;
LARGE_INTEGER FileOffset;
NTSTATUS Status;
PUCHAR Buffer = NULL;
DWORD dwOffset, dwRead, dwRecSize;
DPRINT1("LogfBackupFile(%p, %wZ)\n", LogFile, BackupFileName);
/* Lock the log file shared */
RtlAcquireResourceShared(&LogFile->Lock, TRUE);
InitializeObjectAttributes(&ObjectAttributes,
BackupFileName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtCreateFile(&FileHandle,
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
&ObjectAttributes,
&IoStatusBlock,
NULL,
FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_READ,
FILE_CREATE,
FILE_WRITE_THROUGH | FILE_SYNCHRONOUS_IO_NONALERT,
NULL,
0);
if (!NT_SUCCESS(Status))
{
DPRINT("Can't create backup file %wZ (Status: 0x%08lx)\n", BackupFileName, Status);
goto Done;
}
/* Initialize the (dirty) log file header */
Header.HeaderSize = sizeof(EVENTLOGHEADER);
Header.Signature = LOGFILE_SIGNATURE;
Header.MajorVersion = MAJORVER;
Header.MinorVersion = MINORVER;
Header.StartOffset = sizeof(EVENTLOGHEADER);
Header.EndOffset = sizeof(EVENTLOGHEADER);
Header.CurrentRecordNumber = 1;
Header.OldestRecordNumber = 1;
Header.MaxSize = LogFile->Header.MaxSize;
Header.Flags = ELF_LOGFILE_HEADER_DIRTY;
Header.Retention = LogFile->Header.Retention;
Header.EndHeaderSize = sizeof(EVENTLOGHEADER);
/* Write the (dirty) log file header */
Status = NtWriteFile(FileHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
&Header,
sizeof(EVENTLOGHEADER),
NULL,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to write the log file header (Status: 0x%08lx)\n", Status);
goto Done;
}
for (i = LogFile->Header.OldestRecordNumber; i < LogFile->Header.CurrentRecordNumber; i++)
{
dwOffset = LogfOffsetByNumber(LogFile, i);
if (dwOffset == 0)
break;
if (SetFilePointer(LogFile->hFile, dwOffset, NULL, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
{
DPRINT1("SetFilePointer() failed!\n");
goto Done;
}
if (!ReadFile(LogFile->hFile, &dwRecSize, sizeof(DWORD), &dwRead, NULL))
{
DPRINT1("ReadFile() failed!\n");
goto Done;
}
if (SetFilePointer(LogFile->hFile, dwOffset, NULL, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
{
DPRINT1("SetFilePointer() failed!\n");
goto Done;
}
Buffer = HeapAlloc(MyHeap, 0, dwRecSize);
if (Buffer == NULL)
{
DPRINT1("HeapAlloc() failed!\n");
goto Done;
}
if (!ReadFile(LogFile->hFile, Buffer, dwRecSize, &dwRead, NULL))
{
DPRINT1("ReadFile() failed!\n");
goto Done;
}
/* Write the event record */
Status = NtWriteFile(FileHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
Buffer,
dwRecSize,
NULL,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed! (Status: 0x%08lx)\n", Status);
goto Done;
}
/* Update the header information */
Header.EndOffset += dwRecSize;
/* Free the buffer */
HeapFree(MyHeap, 0, Buffer);
Buffer = NULL;
}
/* Initialize the EOF record */
EofRec.RecordSizeBeginning = sizeof(EVENTLOGEOF);
EofRec.Ones = 0x11111111;
EofRec.Twos = 0x22222222;
EofRec.Threes = 0x33333333;
EofRec.Fours = 0x44444444;
EofRec.BeginRecord = sizeof(EVENTLOGHEADER);
EofRec.EndRecord = Header.EndOffset;
EofRec.CurrentRecordNumber = LogFile->Header.CurrentRecordNumber;
EofRec.OldestRecordNumber = LogFile->Header.OldestRecordNumber;
EofRec.RecordSizeEnd = sizeof(EVENTLOGEOF);
/* Write the EOF record */
Status = NtWriteFile(FileHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
&EofRec,
sizeof(EVENTLOGEOF),
NULL,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed!\n");
goto Done;
}
/* Update the header information */
Header.CurrentRecordNumber = LogFile->Header.CurrentRecordNumber;
Header.OldestRecordNumber = LogFile->Header.OldestRecordNumber;
Header.MaxSize = Header.EndOffset + sizeof(EVENTLOGEOF);
Header.Flags = 0;
/* Write the (clean) log file header */
FileOffset.QuadPart = 0;
Status = NtWriteFile(FileHandle,
NULL,
NULL,
NULL,
&IoStatusBlock,
&Header,
sizeof(EVENTLOGHEADER),
&FileOffset,
NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtWriteFile() failed! (Status: 0x%08lx)\n", Status);
}
Done:
/* Free the buffer */
if (Buffer != NULL)
HeapFree(MyHeap, 0, Buffer);
/* Close the backup file */
if (FileHandle != NULL)
NtClose(FileHandle);
/* Unlock the log file */
RtlReleaseResource(&LogFile->Lock);
return Status;
}
NET_API_STATUS NET_API_FUNCTION
NetrWkstaGetInfo(
IN LPTSTR ServerName OPTIONAL,
IN DWORD Level,
OUT LPWKSTA_INFO WkstaInfo
)
/*++
Routine Description:
This function is the NetWkstaGetInfo entry point in the Workstation
service. It checks the security access of the caller before returning
one the information requested which is either system-wide, or redirector
specific.
Arguments:
ServerName - Supplies the name of server to execute this function
Level - Supplies the requested level of information.
WkstaInfo - Returns a pointer to a buffer which contains the requested
workstation information.
Return Value:
NET_API_STATUS - NERR_Success or reason for failure.
--*/
{
NET_API_STATUS status = NERR_Success;
LPBYTE Buffer;
ACCESS_MASK DesiredAccess;
UNREFERENCED_PARAMETER(ServerName);
//
// Determine the desired access based on the specified info level.
//
switch (Level) {
//
// Guest access
//
case 100:
DesiredAccess = WKSTA_CONFIG_GUEST_INFO_GET;
break;
//
// User access
//
case 101:
DesiredAccess = WKSTA_CONFIG_USER_INFO_GET;
break;
//
// Admin or operator access
//
case 102:
case 502:
DesiredAccess = WKSTA_CONFIG_ADMIN_INFO_GET;
break;
default:
return ERROR_INVALID_LEVEL;
}
//
// Perform access validation on the caller.
//
if (NetpAccessCheckAndAudit(
WORKSTATION_DISPLAY_NAME, // Subsystem name
(LPTSTR) CONFIG_INFO_OBJECT, // Object type name
ConfigurationInfoSd, // Security descriptor
DesiredAccess, // Desired access
&WsConfigInfoMapping // Generic mapping
) != NERR_Success) {
return ERROR_ACCESS_DENIED;
}
//
// Only allowed to proceed with get info if no one else is setting
//
if (! RtlAcquireResourceShared(&WsInfo.ConfigResource, TRUE)) {
return NERR_InternalError;
}
switch (Level) {
//
// System-wide information
//
case 100:
case 101:
case 102:
status = WsGetSystemInfo(Level, &Buffer);
if (status == NERR_Success) {
SET_SYSTEM_INFO_POINTER(WkstaInfo, Buffer);
}
break;
//
// Platform specific information
//
case 502:
status = WsGetPlatformInfo(
Level,
(LPBYTE *) &(WkstaInfo->WkstaInfo502)
);
break;
//
// This should have been caught earlier.
//
default:
NetpAssert(FALSE);
status = ERROR_INVALID_LEVEL;
}
RtlReleaseResource(&WsInfo.ConfigResource);
return status;
}
/*
* NOTE:
* 'RecordNumber' is a pointer to the record number at which the read operation
* should start. If the record number is 0 and the flags given in the 'Flags'
* parameter contain EVENTLOG_SEQUENTIAL_READ, an adequate record number is
* computed.
*/
NTSTATUS
LogfReadEvents(PLOGFILE LogFile,
ULONG Flags,
PULONG RecordNumber,
ULONG BufSize,
PBYTE Buffer,
PULONG BytesRead,
PULONG BytesNeeded,
BOOLEAN Ansi)
{
NTSTATUS Status;
ULONG RecNum;
SIZE_T ReadLength, NeededSize;
ULONG BufferUsage;
/* Parameters validation */
/* EVENTLOG_SEQUENTIAL_READ and EVENTLOG_SEEK_READ are mutually exclusive */
if ((Flags & EVENTLOG_SEQUENTIAL_READ) && (Flags & EVENTLOG_SEEK_READ))
return STATUS_INVALID_PARAMETER;
if (!(Flags & EVENTLOG_SEQUENTIAL_READ) && !(Flags & EVENTLOG_SEEK_READ))
return STATUS_INVALID_PARAMETER;
/* EVENTLOG_FORWARDS_READ and EVENTLOG_BACKWARDS_READ are mutually exclusive */
if ((Flags & EVENTLOG_FORWARDS_READ) && (Flags & EVENTLOG_BACKWARDS_READ))
return STATUS_INVALID_PARAMETER;
if (!(Flags & EVENTLOG_FORWARDS_READ) && !(Flags & EVENTLOG_BACKWARDS_READ))
return STATUS_INVALID_PARAMETER;
if (!Buffer || !BytesRead || !BytesNeeded)
return STATUS_INVALID_PARAMETER;
/* In seek read mode, a record number of 0 is invalid */
if (!(Flags & EVENTLOG_SEQUENTIAL_READ) && (*RecordNumber == 0))
return STATUS_INVALID_PARAMETER;
/* Lock the log file shared */
RtlAcquireResourceShared(&LogFile->Lock, TRUE);
/*
* In sequential read mode, a record number of 0 means we need
* to determine where to start the read operation. Otherwise
* we just use the provided record number.
*/
if ((Flags & EVENTLOG_SEQUENTIAL_READ) && (*RecordNumber == 0))
{
if (Flags & EVENTLOG_FORWARDS_READ)
{
*RecordNumber = ElfGetOldestRecord(&LogFile->LogFile);
}
else // if (Flags & EVENTLOG_BACKWARDS_READ)
{
*RecordNumber = ElfGetCurrentRecord(&LogFile->LogFile) - 1;
}
}
RecNum = *RecordNumber;
*BytesRead = 0;
*BytesNeeded = 0;
BufferUsage = 0;
do
{
Status = ReadRecord(&LogFile->LogFile,
RecNum,
(PEVENTLOGRECORD)(Buffer + BufferUsage),
BufSize - BufferUsage,
&ReadLength,
&NeededSize,
Ansi);
if (Status == STATUS_NOT_FOUND)
{
if (BufferUsage == 0)
{
Status = STATUS_END_OF_FILE;
goto Quit;
}
else
{
break;
}
}
else
if (Status == STATUS_BUFFER_TOO_SMALL)
{
if (BufferUsage == 0)
{
*BytesNeeded = NeededSize;
// Status = STATUS_BUFFER_TOO_SMALL;
goto Quit;
}
else
{
break;
}
}
else
if (!NT_SUCCESS(Status))
{
DPRINT1("ElfReadRecord failed (Status 0x%08lx)\n", Status);
goto Quit;
}
/* Go to the next event record */
/*
* NOTE: This implicitly supposes that all the other record numbers
* are consecutive (and do not jump than more than one unit); but if
* it is not the case, then we would prefer here to call some
* "get_next_record_number" function.
*/
if (Flags & EVENTLOG_FORWARDS_READ)
RecNum++;
else // if (Flags & EVENTLOG_BACKWARDS_READ)
RecNum--;
BufferUsage += ReadLength;
}
while (BufferUsage <= BufSize);
*BytesRead = BufferUsage;
*RecordNumber = RecNum;
Status = STATUS_SUCCESS;
Quit:
/* Unlock the log file */
RtlReleaseResource(&LogFile->Lock);
if (!NT_SUCCESS(Status))
DPRINT1("LogfReadEvents failed (Status 0x%08lx)\n", Status);
return Status;
}
