mirror of
https://github.com/reactos/reactos.git
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575 lines
16 KiB
C
575 lines
16 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: dll/win32/kernel32/client/file/create.c
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* PURPOSE: Directory functions
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* PROGRAMMER: Ariadne ( ariadne@xs4all.nl)
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* UPDATE HISTORY:
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* Created 01/11/98
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* Removed use of SearchPath (not used by Windows)
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* 18/08/2002: CreateFileW mess cleaned up (KJK::Hyperion)
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* 24/08/2002: removed superfluous DPRINTs (KJK::Hyperion)
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*/
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/* INCLUDES *****************************************************************/
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#include <k32.h>
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#define NDEBUG
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#include <debug.h>
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#if DBG
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DEBUG_CHANNEL(kernel32file);
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#endif
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/* FUNCTIONS ****************************************************************/
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/*
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* @implemented
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*/
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HANDLE WINAPI CreateFileA (LPCSTR lpFileName,
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DWORD dwDesiredAccess,
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DWORD dwShareMode,
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LPSECURITY_ATTRIBUTES lpSecurityAttributes,
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DWORD dwCreationDisposition,
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DWORD dwFlagsAndAttributes,
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HANDLE hTemplateFile)
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{
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PWCHAR FileNameW;
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HANDLE FileHandle;
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TRACE("CreateFileA(lpFileName %s)\n",lpFileName);
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if (!(FileNameW = FilenameA2W(lpFileName, FALSE)))
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return INVALID_HANDLE_VALUE;
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FileHandle = CreateFileW (FileNameW,
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dwDesiredAccess,
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dwShareMode,
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lpSecurityAttributes,
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dwCreationDisposition,
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dwFlagsAndAttributes,
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hTemplateFile);
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return FileHandle;
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}
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/*
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* @implemented
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*/
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HANDLE WINAPI CreateFileW (LPCWSTR lpFileName,
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DWORD dwDesiredAccess,
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DWORD dwShareMode,
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LPSECURITY_ATTRIBUTES lpSecurityAttributes,
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DWORD dwCreationDisposition,
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DWORD dwFlagsAndAttributes,
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HANDLE hTemplateFile)
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{
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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UNICODE_STRING NtPathU;
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LPCWSTR pszConsoleFileName;
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HANDLE FileHandle;
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NTSTATUS Status;
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ULONG FileAttributes, Flags = 0;
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PVOID EaBuffer = NULL;
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ULONG EaLength = 0;
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BOOLEAN TrailingBackslash;
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if (!lpFileName || !lpFileName[0])
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{
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SetLastError( ERROR_PATH_NOT_FOUND );
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return INVALID_HANDLE_VALUE;
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}
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TRACE("CreateFileW(lpFileName %S)\n",lpFileName);
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/* validate & translate the creation disposition */
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switch (dwCreationDisposition)
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{
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case CREATE_NEW:
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dwCreationDisposition = FILE_CREATE;
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break;
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case CREATE_ALWAYS:
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dwCreationDisposition = FILE_OVERWRITE_IF;
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break;
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case OPEN_EXISTING:
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dwCreationDisposition = FILE_OPEN;
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break;
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case OPEN_ALWAYS:
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dwCreationDisposition = FILE_OPEN_IF;
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break;
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case TRUNCATE_EXISTING:
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dwCreationDisposition = FILE_OVERWRITE;
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break;
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default:
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SetLastError(ERROR_INVALID_PARAMETER);
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return (INVALID_HANDLE_VALUE);
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}
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/* check for console input/output */
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pszConsoleFileName = IntCheckForConsoleFileName(lpFileName, dwDesiredAccess);
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if (pszConsoleFileName)
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{
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return OpenConsoleW(pszConsoleFileName,
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dwDesiredAccess,
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lpSecurityAttributes ? lpSecurityAttributes->bInheritHandle : FALSE,
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FILE_SHARE_READ | FILE_SHARE_WRITE);
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}
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/* validate & translate the flags */
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/* translate the flags that need no validation */
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if (!(dwFlagsAndAttributes & FILE_FLAG_OVERLAPPED))
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{
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/* yes, nonalert is correct! apc's are not delivered
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while waiting for file io to complete */
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Flags |= FILE_SYNCHRONOUS_IO_NONALERT;
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}
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if(dwFlagsAndAttributes & FILE_FLAG_WRITE_THROUGH)
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Flags |= FILE_WRITE_THROUGH;
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if(dwFlagsAndAttributes & FILE_FLAG_NO_BUFFERING)
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Flags |= FILE_NO_INTERMEDIATE_BUFFERING;
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if(dwFlagsAndAttributes & FILE_FLAG_RANDOM_ACCESS)
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Flags |= FILE_RANDOM_ACCESS;
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if(dwFlagsAndAttributes & FILE_FLAG_SEQUENTIAL_SCAN)
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Flags |= FILE_SEQUENTIAL_ONLY;
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if(dwFlagsAndAttributes & FILE_FLAG_DELETE_ON_CLOSE)
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{
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Flags |= FILE_DELETE_ON_CLOSE;
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dwDesiredAccess |= DELETE;
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}
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if(dwFlagsAndAttributes & FILE_FLAG_BACKUP_SEMANTICS)
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{
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if(dwDesiredAccess & GENERIC_ALL)
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Flags |= FILE_OPEN_FOR_BACKUP_INTENT | FILE_OPEN_REMOTE_INSTANCE;
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else
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{
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if(dwDesiredAccess & GENERIC_READ)
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Flags |= FILE_OPEN_FOR_BACKUP_INTENT;
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if(dwDesiredAccess & GENERIC_WRITE)
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Flags |= FILE_OPEN_REMOTE_INSTANCE;
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}
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}
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else
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Flags |= FILE_NON_DIRECTORY_FILE;
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if(dwFlagsAndAttributes & FILE_FLAG_OPEN_REPARSE_POINT)
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Flags |= FILE_OPEN_REPARSE_POINT;
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if(dwFlagsAndAttributes & FILE_FLAG_OPEN_NO_RECALL)
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Flags |= FILE_OPEN_NO_RECALL;
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FileAttributes = (dwFlagsAndAttributes & (FILE_ATTRIBUTE_VALID_FLAGS & ~FILE_ATTRIBUTE_DIRECTORY));
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/* handle may always be waited on and querying attributes are always allowed */
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dwDesiredAccess |= SYNCHRONIZE | FILE_READ_ATTRIBUTES;
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/* FILE_FLAG_POSIX_SEMANTICS is handled later */
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/* validate & translate the filename */
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if (!RtlDosPathNameToNtPathName_U (lpFileName,
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&NtPathU,
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NULL,
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NULL))
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{
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WARN("Invalid path\n");
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SetLastError(ERROR_FILE_NOT_FOUND);
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return INVALID_HANDLE_VALUE;
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}
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TRACE("NtPathU \'%wZ\'\n", &NtPathU);
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TrailingBackslash = FALSE;
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if (NtPathU.Length >= sizeof(WCHAR) &&
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NtPathU.Buffer[NtPathU.Length / sizeof(WCHAR) - 1])
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{
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TrailingBackslash = TRUE;
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}
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if (hTemplateFile != NULL)
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{
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FILE_EA_INFORMATION EaInformation;
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for (;;)
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{
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/* try to get the size of the extended attributes, if we fail just continue
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creating the file without copying the attributes! */
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Status = NtQueryInformationFile(hTemplateFile,
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&IoStatusBlock,
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&EaInformation,
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sizeof(FILE_EA_INFORMATION),
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FileEaInformation);
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if (NT_SUCCESS(Status) && (EaInformation.EaSize != 0))
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{
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/* there's extended attributes to read, let's give it a try */
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EaBuffer = RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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EaInformation.EaSize);
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if (EaBuffer == NULL)
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{
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RtlFreeHeap(RtlGetProcessHeap(),
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0,
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NtPathU.Buffer);
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/* the template file handle is valid and has extended attributes,
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however we seem to lack some memory here. We should fail here! */
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return INVALID_HANDLE_VALUE;
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}
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Status = NtQueryEaFile(hTemplateFile,
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&IoStatusBlock,
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EaBuffer,
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EaInformation.EaSize,
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FALSE,
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NULL,
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0,
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NULL,
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TRUE);
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if (NT_SUCCESS(Status))
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{
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/* we successfully read the extended attributes, break the loop
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and continue */
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EaLength = EaInformation.EaSize;
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break;
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}
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else
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{
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RtlFreeHeap(RtlGetProcessHeap(),
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0,
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EaBuffer);
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EaBuffer = NULL;
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if (Status != STATUS_BUFFER_TOO_SMALL)
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{
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/* unless we just allocated not enough memory, break the loop
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and just continue without copying extended attributes */
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break;
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}
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}
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}
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else
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{
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/* we either failed to get the size of the extended attributes or
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they're empty, just continue as there's no need to copy
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attributes */
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break;
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}
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}
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}
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/* build the object attributes */
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InitializeObjectAttributes(&ObjectAttributes,
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&NtPathU,
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0,
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NULL,
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NULL);
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if (lpSecurityAttributes)
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{
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if(lpSecurityAttributes->bInheritHandle)
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ObjectAttributes.Attributes |= OBJ_INHERIT;
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ObjectAttributes.SecurityDescriptor = lpSecurityAttributes->lpSecurityDescriptor;
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}
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if(!(dwFlagsAndAttributes & FILE_FLAG_POSIX_SEMANTICS))
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ObjectAttributes.Attributes |= OBJ_CASE_INSENSITIVE;
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/* perform the call */
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Status = NtCreateFile (&FileHandle,
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dwDesiredAccess,
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&ObjectAttributes,
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&IoStatusBlock,
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NULL,
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FileAttributes,
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dwShareMode,
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dwCreationDisposition,
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Flags,
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EaBuffer,
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EaLength);
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RtlFreeHeap(RtlGetProcessHeap(),
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0,
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NtPathU.Buffer);
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/* free the extended attributes buffer if allocated */
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if (EaBuffer != NULL)
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{
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RtlFreeHeap(RtlGetProcessHeap(),
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0,
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EaBuffer);
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}
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/* error */
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if (!NT_SUCCESS(Status))
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{
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/* In the case file creation was rejected due to CREATE_NEW flag
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* was specified and file with that name already exists, correct
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* last error is ERROR_FILE_EXISTS and not ERROR_ALREADY_EXISTS.
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* Note: RtlNtStatusToDosError is not the subject to blame here.
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*/
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if (Status == STATUS_OBJECT_NAME_COLLISION &&
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dwCreationDisposition == FILE_CREATE)
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{
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SetLastError( ERROR_FILE_EXISTS );
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}
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else if (Status == STATUS_FILE_IS_A_DIRECTORY &&
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TrailingBackslash)
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{
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SetLastError(ERROR_PATH_NOT_FOUND);
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}
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else
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{
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BaseSetLastNTError (Status);
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}
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return INVALID_HANDLE_VALUE;
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}
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/*
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create with OPEN_ALWAYS (FILE_OPEN_IF) returns info = FILE_OPENED or FILE_CREATED
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create with CREATE_ALWAYS (FILE_OVERWRITE_IF) returns info = FILE_OVERWRITTEN or FILE_CREATED
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*/
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if (dwCreationDisposition == FILE_OPEN_IF)
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{
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SetLastError(IoStatusBlock.Information == FILE_OPENED ? ERROR_ALREADY_EXISTS : ERROR_SUCCESS);
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}
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else if (dwCreationDisposition == FILE_OVERWRITE_IF)
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{
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SetLastError(IoStatusBlock.Information == FILE_OVERWRITTEN ? ERROR_ALREADY_EXISTS : ERROR_SUCCESS);
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}
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else
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{
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SetLastError(ERROR_SUCCESS);
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}
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return FileHandle;
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}
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/*
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* @implemented
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*/
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HFILE WINAPI
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OpenFile(LPCSTR lpFileName,
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LPOFSTRUCT lpReOpenBuff,
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UINT uStyle)
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{
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OBJECT_ATTRIBUTES ObjectAttributes;
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IO_STATUS_BLOCK IoStatusBlock;
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UNICODE_STRING FileNameString;
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UNICODE_STRING FileNameU;
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ANSI_STRING FileName;
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WCHAR PathNameW[MAX_PATH];
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HANDLE FileHandle = NULL;
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NTSTATUS errCode;
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PWCHAR FilePart;
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ULONG Len;
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TRACE("OpenFile('%s', lpReOpenBuff %p, uStyle %x)\n", lpFileName, lpReOpenBuff, uStyle);
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if (lpReOpenBuff == NULL)
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{
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return HFILE_ERROR;
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}
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lpReOpenBuff->nErrCode = 0;
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if (uStyle & OF_REOPEN) lpFileName = lpReOpenBuff->szPathName;
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if (!lpFileName)
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{
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return HFILE_ERROR;
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}
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if (!GetFullPathNameA(lpFileName,
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sizeof(lpReOpenBuff->szPathName),
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lpReOpenBuff->szPathName,
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NULL))
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{
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lpReOpenBuff->nErrCode = (WORD)GetLastError();
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return HFILE_ERROR;
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}
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if (uStyle & OF_PARSE)
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{
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lpReOpenBuff->fFixedDisk = (GetDriveTypeA(lpReOpenBuff->szPathName) != DRIVE_REMOVABLE);
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TRACE("(%s): OF_PARSE, res = '%s'\n", lpFileName, lpReOpenBuff->szPathName);
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return 0;
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}
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if ((uStyle & OF_EXIST) && !(uStyle & OF_CREATE))
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{
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DWORD dwAttributes = GetFileAttributesA(lpReOpenBuff->szPathName);
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switch (dwAttributes)
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{
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case INVALID_FILE_ATTRIBUTES: /* File does not exist */
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SetLastError(ERROR_FILE_NOT_FOUND);
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lpReOpenBuff->nErrCode = (WORD) ERROR_FILE_NOT_FOUND;
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return -1;
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case FILE_ATTRIBUTE_DIRECTORY:
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SetLastError(ERROR_ACCESS_DENIED);
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lpReOpenBuff->nErrCode = (WORD) ERROR_ACCESS_DENIED;
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return -1;
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default:
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lpReOpenBuff->cBytes = sizeof(OFSTRUCT);
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return 1;
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}
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}
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lpReOpenBuff->cBytes = sizeof(OFSTRUCT);
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if ((uStyle & OF_CREATE) == OF_CREATE)
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{
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DWORD Sharing;
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switch (uStyle & 0x70)
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{
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case OF_SHARE_EXCLUSIVE: Sharing = 0; break;
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case OF_SHARE_DENY_WRITE: Sharing = FILE_SHARE_READ; break;
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case OF_SHARE_DENY_READ: Sharing = FILE_SHARE_WRITE; break;
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case OF_SHARE_DENY_NONE:
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case OF_SHARE_COMPAT:
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default:
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Sharing = FILE_SHARE_READ | FILE_SHARE_WRITE;
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}
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return (HFILE)(ULONG_PTR) CreateFileA (lpFileName,
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GENERIC_READ | GENERIC_WRITE,
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Sharing,
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NULL,
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CREATE_ALWAYS,
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FILE_ATTRIBUTE_NORMAL,
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0);
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}
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RtlInitAnsiString (&FileName, (LPSTR)lpFileName);
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/* convert ansi (or oem) string to unicode */
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if (bIsFileApiAnsi)
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RtlAnsiStringToUnicodeString (&FileNameU, &FileName, TRUE);
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else
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RtlOemStringToUnicodeString (&FileNameU, &FileName, TRUE);
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Len = SearchPathW (NULL,
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FileNameU.Buffer,
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NULL,
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OFS_MAXPATHNAME,
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PathNameW,
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&FilePart);
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RtlFreeUnicodeString(&FileNameU);
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if (Len == 0 || Len > OFS_MAXPATHNAME)
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{
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lpReOpenBuff->nErrCode = (WORD)GetLastError();
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return HFILE_ERROR;
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}
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if (uStyle & OF_DELETE)
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{
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if (!DeleteFileW(PathNameW))
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{
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lpReOpenBuff->nErrCode = (WORD)GetLastError();
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return HFILE_ERROR;
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}
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TRACE("(%s): OF_DELETE return = OK\n", lpFileName);
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return TRUE;
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}
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FileName.Buffer = lpReOpenBuff->szPathName;
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FileName.Length = 0;
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FileName.MaximumLength = OFS_MAXPATHNAME;
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RtlInitUnicodeString(&FileNameU, PathNameW);
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/* convert unicode string to ansi (or oem) */
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if (bIsFileApiAnsi)
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RtlUnicodeStringToAnsiString (&FileName, &FileNameU, FALSE);
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else
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RtlUnicodeStringToOemString (&FileName, &FileNameU, FALSE);
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if (!RtlDosPathNameToNtPathName_U (PathNameW,
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&FileNameString,
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NULL,
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NULL))
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{
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return HFILE_ERROR;
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}
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// FILE_SHARE_READ
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// FILE_NO_INTERMEDIATE_BUFFERING
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ObjectAttributes.Length = sizeof(OBJECT_ATTRIBUTES);
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ObjectAttributes.RootDirectory = NULL;
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ObjectAttributes.ObjectName = &FileNameString;
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ObjectAttributes.Attributes = OBJ_CASE_INSENSITIVE| OBJ_INHERIT;
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ObjectAttributes.SecurityDescriptor = NULL;
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ObjectAttributes.SecurityQualityOfService = NULL;
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errCode = NtOpenFile (&FileHandle,
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GENERIC_READ | SYNCHRONIZE,
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&ObjectAttributes,
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&IoStatusBlock,
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FILE_SHARE_READ,
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FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT);
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RtlFreeHeap(RtlGetProcessHeap(), 0, FileNameString.Buffer);
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lpReOpenBuff->nErrCode = (WORD)RtlNtStatusToDosError(errCode);
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if (!NT_SUCCESS(errCode))
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{
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BaseSetLastNTError (errCode);
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return HFILE_ERROR;
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}
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if (uStyle & OF_EXIST)
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{
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NtClose(FileHandle);
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return (HFILE)1;
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}
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return (HFILE)(ULONG_PTR)FileHandle;
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}
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/*
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* @unimplemented
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*/
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BOOL
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WINAPI
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OpenDataFile(HANDLE hFile, DWORD dwUnused)
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{
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STUB;
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return FALSE;
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}
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/*
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* @unimplemented
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*/
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HANDLE
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WINAPI
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ReOpenFile(IN HANDLE hOriginalFile,
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IN DWORD dwDesiredAccess,
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IN DWORD dwShareMode,
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IN DWORD dwFlags)
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|
{
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STUB;
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return INVALID_HANDLE_VALUE;
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}
|
|
|
|
/* EOF */
|