mirror of
https://github.com/reactos/reactos.git
synced 2024-12-27 01:24:38 +00:00
- fixed Read/WriteFile(Ex) and properly wait on completion for synchronous operations
- prevent completion port notification by not passing an APC context to the kernel when the low-order bit of the event handle is set (for asynchronous operations) svn path=/trunk/; revision=15043
This commit is contained in:
Thomas Bluemel
parent
c565a223c9
commit
496308ed56
1 changed files with 242 additions and 215 deletions
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@ -23,78 +23,104 @@
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* @implemented
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*/
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BOOL STDCALL
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WriteFile(HANDLE hFile,
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LPCVOID lpBuffer,
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DWORD nNumberOfBytesToWrite,
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LPDWORD lpNumberOfBytesWritten,
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LPOVERLAPPED lpOverLapped)
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WriteFile(IN HANDLE hFile,
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IN LPCVOID lpBuffer,
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IN DWORD nNumberOfBytesToWrite OPTIONAL,
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OUT LPDWORD lpNumberOfBytesWritten OPTIONAL,
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IN LPOVERLAPPED lpOverlapped OPTIONAL)
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{
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HANDLE hEvent = NULL;
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LARGE_INTEGER Offset;
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NTSTATUS errCode;
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IO_STATUS_BLOCK IIosb;
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PIO_STATUS_BLOCK IoStatusBlock;
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PLARGE_INTEGER ptrOffset;
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NTSTATUS Status;
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DPRINT("WriteFile(hFile %x)\n",hFile);
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DPRINT("WriteFile(hFile %x)\n", hFile);
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if (lpOverLapped == NULL && lpNumberOfBytesWritten == NULL)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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}
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if (lpNumberOfBytesWritten)
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{
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*lpNumberOfBytesWritten = 0;
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}
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if (lpNumberOfBytesWritten != NULL)
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{
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*lpNumberOfBytesWritten = 0;
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}
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if (IsConsoleHandle(hFile))
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{
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return(WriteConsoleA(hFile,
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lpBuffer,
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nNumberOfBytesToWrite,
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lpNumberOfBytesWritten,
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NULL));
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return WriteConsoleA(hFile,
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lpBuffer,
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nNumberOfBytesToWrite,
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lpNumberOfBytesWritten,
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lpOverlapped);
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}
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if (lpOverLapped != NULL)
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if (lpOverlapped != NULL)
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{
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Offset.u.LowPart = lpOverLapped->Offset;
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Offset.u.HighPart = lpOverLapped->OffsetHigh;
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lpOverLapped->Internal = STATUS_PENDING;
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hEvent = lpOverLapped->hEvent;
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IoStatusBlock = (PIO_STATUS_BLOCK)lpOverLapped;
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ptrOffset = &Offset;
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LARGE_INTEGER Offset;
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PVOID ApcContext;
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Offset.u.LowPart = lpOverlapped->Offset;
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Offset.u.HighPart = lpOverlapped->OffsetHigh;
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lpOverlapped->Internal = STATUS_PENDING;
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ApcContext = (((ULONG_PTR)lpOverlapped->hEvent & 0x1) ? NULL : lpOverlapped);
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Status = NtWriteFile(hFile,
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lpOverlapped->hEvent,
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NULL,
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ApcContext,
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(PIO_STATUS_BLOCK)lpOverlapped,
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(PVOID)lpBuffer,
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nNumberOfBytesToWrite,
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&Offset,
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NULL);
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/* return FALSE in case of failure and pending operations! */
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if (!NT_SUCCESS(Status) || Status == STATUS_PENDING)
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{
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SetLastErrorByStatus(Status);
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return FALSE;
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}
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if (lpNumberOfBytesWritten != NULL)
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{
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*lpNumberOfBytesWritten = lpOverlapped->InternalHigh;
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}
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}
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else
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{
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ptrOffset = NULL;
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IoStatusBlock = &IIosb;
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}
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IO_STATUS_BLOCK Iosb;
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Status = NtWriteFile(hFile,
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NULL,
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NULL,
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NULL,
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&Iosb,
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(PVOID)lpBuffer,
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nNumberOfBytesToWrite,
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NULL,
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NULL);
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errCode = NtWriteFile(hFile,
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hEvent,
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NULL,
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NULL,
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IoStatusBlock,
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(PVOID)lpBuffer,
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nNumberOfBytesToWrite,
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ptrOffset,
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NULL);
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if (!NT_SUCCESS(errCode) || errCode == STATUS_PENDING)
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{
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SetLastErrorByStatus (errCode);
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return FALSE;
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}
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/* wait in case operation is pending */
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if (Status == STATUS_PENDING)
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{
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Status = NtWaitForSingleObject(hFile,
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FALSE,
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NULL);
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if (NT_SUCCESS(Status))
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{
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Status = Iosb.Status;
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}
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}
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if (NT_SUCCESS(Status))
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{
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/* lpNumberOfBytesWritten must not be NULL here, in fact Win doesn't
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check that case either and crashes (only after the operation
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completed) */
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*lpNumberOfBytesWritten = Iosb.Information;
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}
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else
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{
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SetLastErrorByStatus(Status);
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return FALSE;
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}
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}
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if (lpNumberOfBytesWritten != NULL )
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{
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*lpNumberOfBytesWritten = IoStatusBlock->Information;
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}
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DPRINT("WriteFile() succeeded\n");
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return(TRUE);
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DPRINT("WriteFile() succeeded\n");
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return TRUE;
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}
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@ -102,87 +128,119 @@ WriteFile(HANDLE hFile,
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* @implemented
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*/
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BOOL STDCALL
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ReadFile(
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HANDLE hFile,
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LPVOID lpBuffer,
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DWORD nNumberOfBytesToRead,
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LPDWORD lpNumberOfBytesRead,
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LPOVERLAPPED lpOverLapped
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)
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ReadFile(IN HANDLE hFile,
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IN LPVOID lpBuffer,
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IN DWORD nNumberOfBytesToRead,
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OUT LPDWORD lpNumberOfBytesRead OPTIONAL,
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IN LPOVERLAPPED lpOverlapped OPTIONAL)
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{
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HANDLE hEvent = NULL;
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LARGE_INTEGER Offset;
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NTSTATUS errCode;
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IO_STATUS_BLOCK IIosb;
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PIO_STATUS_BLOCK IoStatusBlock;
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PLARGE_INTEGER ptrOffset;
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NTSTATUS Status;
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if (lpOverLapped == NULL && lpNumberOfBytesRead == NULL)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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}
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DPRINT("ReadFile(hFile %x)\n", hFile);
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if (lpNumberOfBytesRead)
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{
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*lpNumberOfBytesRead = 0;
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}
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if (IsConsoleHandle(hFile))
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{
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return(ReadConsoleA(hFile,
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lpBuffer,
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nNumberOfBytesToRead,
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lpNumberOfBytesRead,
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NULL));
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}
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if (lpOverLapped)
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{
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Offset.u.LowPart = lpOverLapped->Offset;
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Offset.u.HighPart = lpOverLapped->OffsetHigh;
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lpOverLapped->Internal = STATUS_PENDING;
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hEvent = lpOverLapped->hEvent;
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IoStatusBlock = (PIO_STATUS_BLOCK)lpOverLapped;
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ptrOffset = &Offset;
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}
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else
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{
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ptrOffset = NULL;
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IoStatusBlock = &IIosb;
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}
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errCode = NtReadFile(hFile,
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hEvent,
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NULL,
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NULL,
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IoStatusBlock,
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lpBuffer,
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nNumberOfBytesToRead,
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ptrOffset,
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NULL);
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if (lpNumberOfBytesRead != NULL)
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{
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*lpNumberOfBytesRead = 0;
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}
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/* for non-overlapped io, a end-of-file error is translated to
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a successful operation with zero bytes read */
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if (!lpOverLapped && errCode == STATUS_END_OF_FILE)
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{
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/* IoStatusBlock->Information should contain zero in case of an error, but to be safe,
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set lpNumberOfBytesRead to zero manually instead of using IoStatusBlock->Information */
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*lpNumberOfBytesRead = 0;
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return TRUE;
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}
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if (!NT_SUCCESS(errCode) || errCode == STATUS_PENDING)
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{
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SetLastErrorByStatus (errCode);
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return FALSE;
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}
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if (IsConsoleHandle(hFile))
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{
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return ReadConsoleA(hFile,
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lpBuffer,
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nNumberOfBytesToRead,
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lpNumberOfBytesRead,
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lpOverlapped);
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}
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if (lpNumberOfBytesRead != NULL)
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{
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*lpNumberOfBytesRead = IoStatusBlock->Information;
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}
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return(TRUE);
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if (lpOverlapped != NULL)
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{
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LARGE_INTEGER Offset;
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PVOID ApcContext;
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Offset.u.LowPart = lpOverlapped->Offset;
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Offset.u.HighPart = lpOverlapped->OffsetHigh;
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lpOverlapped->Internal = STATUS_PENDING;
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ApcContext = (((ULONG_PTR)lpOverlapped->hEvent & 0x1) ? NULL : lpOverlapped);
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Status = NtReadFile(hFile,
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lpOverlapped->hEvent,
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NULL,
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ApcContext,
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(PIO_STATUS_BLOCK)lpOverlapped,
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lpBuffer,
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nNumberOfBytesToRead,
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&Offset,
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NULL);
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/* return FALSE in case of failure and pending operations! */
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if (!NT_SUCCESS(Status) || Status == STATUS_PENDING)
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{
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if (Status == STATUS_END_OF_FILE &&
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lpNumberOfBytesRead != NULL)
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{
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*lpNumberOfBytesRead = 0;
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}
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SetLastErrorByStatus(Status);
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return FALSE;
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}
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if (lpNumberOfBytesRead != NULL)
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{
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*lpNumberOfBytesRead = lpOverlapped->InternalHigh;
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}
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}
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else
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{
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IO_STATUS_BLOCK Iosb;
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Status = NtReadFile(hFile,
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NULL,
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NULL,
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NULL,
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&Iosb,
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lpBuffer,
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nNumberOfBytesToRead,
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NULL,
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NULL);
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/* wait in case operation is pending */
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if (Status == STATUS_PENDING)
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{
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Status = NtWaitForSingleObject(hFile,
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FALSE,
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NULL);
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if (NT_SUCCESS(Status))
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{
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Status = Iosb.Status;
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}
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}
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if (Status == STATUS_END_OF_FILE)
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{
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/* lpNumberOfBytesRead must not be NULL here, in fact Win doesn't
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check that case either and crashes (only after the operation
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completed) */
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*lpNumberOfBytesRead = Iosb.Information;
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return TRUE;
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}
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if (NT_SUCCESS(Status))
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{
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/* lpNumberOfBytesRead must not be NULL here, in fact Win doesn't
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check that case either and crashes (only after the operation
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completed) */
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*lpNumberOfBytesRead = Iosb.Information;
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}
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else
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{
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SetLastErrorByStatus(Status);
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return FALSE;
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}
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}
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DPRINT("ReadFile() succeeded\n");
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return TRUE;
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}
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VOID STDCALL
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@ -191,13 +249,13 @@ ApcRoutine(PVOID ApcContext,
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ULONG Reserved)
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{
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DWORD dwErrorCode;
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LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine =
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LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine =
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(LPOVERLAPPED_COMPLETION_ROUTINE)ApcContext;
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dwErrorCode = RtlNtStatusToDosError(IoStatusBlock->Status);
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lpCompletionRoutine(dwErrorCode,
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IoStatusBlock->Information,
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(LPOVERLAPPED)IoStatusBlock);
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lpCompletionRoutine(dwErrorCode,
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IoStatusBlock->Information,
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(LPOVERLAPPED)IoStatusBlock);
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}
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@ -205,54 +263,36 @@ ApcRoutine(PVOID ApcContext,
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* @implemented
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*/
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BOOL STDCALL
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WriteFileEx (HANDLE hFile,
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LPCVOID lpBuffer,
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DWORD nNumberOfBytesToWrite,
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LPOVERLAPPED lpOverLapped,
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LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
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WriteFileEx(IN HANDLE hFile,
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IN LPCVOID lpBuffer,
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IN DWORD nNumberOfBytesToWrite OPTIONAL,
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IN LPOVERLAPPED lpOverlapped,
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IN LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
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{
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LARGE_INTEGER Offset;
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NTSTATUS errCode;
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PIO_STATUS_BLOCK IoStatusBlock;
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PLARGE_INTEGER ptrOffset;
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DPRINT("WriteFileEx(hFile %x)\n",hFile);
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Offset.u.LowPart = lpOverLapped->Offset;
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Offset.u.HighPart = lpOverLapped->OffsetHigh;
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lpOverLapped->Internal = STATUS_PENDING;
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IoStatusBlock = (PIO_STATUS_BLOCK)lpOverLapped;
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ptrOffset = &Offset;
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NTSTATUS Status;
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errCode = NtWriteFile(hFile,
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NULL,
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ApcRoutine,
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lpCompletionRoutine,
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IoStatusBlock,
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(PVOID)lpBuffer,
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nNumberOfBytesToWrite,
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ptrOffset,
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NULL);
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if (NT_ERROR(errCode))
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Offset.u.LowPart = lpOverlapped->Offset;
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Offset.u.HighPart = lpOverlapped->OffsetHigh;
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lpOverlapped->Internal = STATUS_PENDING;
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Status = NtWriteFile(hFile,
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NULL,
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ApcRoutine,
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lpCompletionRoutine,
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(PIO_STATUS_BLOCK)lpOverlapped,
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(PVOID)lpBuffer,
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nNumberOfBytesToWrite,
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&Offset,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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SetLastErrorByStatus (errCode);
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DPRINT("WriteFileEx() failed\n");
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SetLastErrorByStatus(Status);
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return FALSE;
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}
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if (NT_WARNING(errCode))
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{
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SetLastErrorByStatus(errCode);
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}
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else
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{
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SetLastError(0);
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}
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DPRINT("WriteFileEx() succeeded\n");
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return(TRUE);
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return TRUE;
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}
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@ -260,49 +300,36 @@ WriteFileEx (HANDLE hFile,
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* @implemented
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*/
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BOOL STDCALL
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ReadFileEx(HANDLE hFile,
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LPVOID lpBuffer,
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DWORD nNumberOfBytesToRead,
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LPOVERLAPPED lpOverLapped,
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LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
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ReadFileEx(IN HANDLE hFile,
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IN LPVOID lpBuffer,
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IN DWORD nNumberOfBytesToRead OPTIONAL,
|
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IN LPOVERLAPPED lpOverlapped,
|
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IN LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine)
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{
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LARGE_INTEGER Offset;
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NTSTATUS errCode;
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PIO_STATUS_BLOCK IoStatusBlock;
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PLARGE_INTEGER ptrOffset;
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NTSTATUS Status;
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Offset.u.LowPart = lpOverLapped->Offset;
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Offset.u.HighPart = lpOverLapped->OffsetHigh;
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lpOverLapped->Internal = STATUS_PENDING;
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IoStatusBlock = (PIO_STATUS_BLOCK)lpOverLapped;
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ptrOffset = &Offset;
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Offset.u.LowPart = lpOverlapped->Offset;
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Offset.u.HighPart = lpOverlapped->OffsetHigh;
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lpOverlapped->Internal = STATUS_PENDING;
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errCode = NtReadFile(hFile,
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NULL,
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ApcRoutine,
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lpCompletionRoutine,
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IoStatusBlock,
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lpBuffer,
|
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nNumberOfBytesToRead,
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ptrOffset,
|
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NULL);
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Status = NtReadFile(hFile,
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NULL,
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ApcRoutine,
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lpCompletionRoutine,
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(PIO_STATUS_BLOCK)lpOverlapped,
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lpBuffer,
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nNumberOfBytesToRead,
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&Offset,
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NULL);
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if (NT_ERROR(errCode))
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if (!NT_SUCCESS(Status))
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{
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SetLastErrorByStatus (errCode);
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return(FALSE);
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SetLastErrorByStatus(Status);
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return FALSE;
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}
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if (NT_WARNING(errCode))
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{
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SetLastErrorByStatus(errCode);
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}
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else
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{
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SetLastError(0);
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}
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return(TRUE);
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return TRUE;
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}
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/* EOF */
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