2 * file-io.c: File IO internal calls
5 * Dick Porter (dick@ximian.com)
7 * (C) 2001 Ximian, Inc.
17 #ifndef PLATFORM_WIN32
21 #elif defined(HAVE_SYS_AIO_H)
29 #include <mono/metadata/object.h>
30 #include <mono/io-layer/io-layer.h>
31 #include <mono/metadata/file-io.h>
32 #include <mono/metadata/exception.h>
33 #include <mono/metadata/appdomain.h>
34 #include <mono/metadata/marshal.h>
38 /* conversion functions */
40 static guint32 convert_mode(MonoFileMode mono_mode)
45 case FileMode_CreateNew:
54 case FileMode_OpenOrCreate:
57 case FileMode_Truncate:
58 mode=TRUNCATE_EXISTING;
64 g_warning("System.IO.FileMode has unknown value 0x%x",
73 static guint32 convert_access(MonoFileAccess mono_access)
81 case FileAccess_Write:
84 case FileAccess_ReadWrite:
85 access=GENERIC_READ|GENERIC_WRITE;
88 g_warning("System.IO.FileAccess has unknown value 0x%x",
97 static guint32 convert_share(MonoFileShare mono_share)
106 share=FILE_SHARE_READ;
108 case FileShare_Write:
109 share=FILE_SHARE_WRITE;
111 case FileShare_ReadWrite:
112 share=FILE_SHARE_READ|FILE_SHARE_WRITE;
115 g_warning("System.IO.FileShare has unknown value 0x%x",
125 static guint32 convert_stdhandle(guint32 fd)
131 stdhandle=STD_INPUT_HANDLE;
134 stdhandle=STD_OUTPUT_HANDLE;
137 stdhandle=STD_ERROR_HANDLE;
140 g_warning("unknown standard file descriptor %d", fd);
141 stdhandle=STD_INPUT_HANDLE;
148 static guint32 convert_seekorigin(MonoSeekOrigin origin)
153 case SeekOrigin_Begin:
154 w32origin=FILE_BEGIN;
156 case SeekOrigin_Current:
157 w32origin=FILE_CURRENT;
163 g_warning("System.IO.SeekOrigin has unknown value 0x%x",
166 w32origin=FILE_CURRENT;
172 static gint64 convert_filetime (const FILETIME *filetime)
174 guint64 ticks = filetime->dwHighDateTime;
176 ticks += filetime->dwLowDateTime;
177 return (gint64)ticks;
180 static void convert_win32_file_attribute_data (const WIN32_FILE_ATTRIBUTE_DATA *data, const gunichar2 *name, MonoIOStat *stat)
184 stat->attributes = data->dwFileAttributes;
185 stat->creation_time = convert_filetime (&data->ftCreationTime);
186 stat->last_access_time = convert_filetime (&data->ftLastAccessTime);
187 stat->last_write_time = convert_filetime (&data->ftLastWriteTime);
188 stat->length = ((gint64)data->nFileSizeHigh << 32) | data->nFileSizeLow;
194 stat->name = mono_string_new_utf16 (mono_domain_get (), name, len);
197 /* Managed file attributes have nearly but not quite the same values
198 * as the w32 equivalents.
200 static guint32 convert_attrs(MonoFileAttributes attrs)
202 if(attrs & FileAttributes_Encrypted) {
203 attrs |= FILE_ATTRIBUTE_ENCRYPTED;
209 /* System.IO.MonoIO internal calls */
212 ves_icall_System_IO_MonoIO_CreateDirectory (MonoString *path, gint32 *error)
218 *error=ERROR_SUCCESS;
220 ret=CreateDirectory (mono_string_chars (path), NULL);
222 *error=GetLastError ();
229 ves_icall_System_IO_MonoIO_RemoveDirectory (MonoString *path, gint32 *error)
235 *error=ERROR_SUCCESS;
237 ret=RemoveDirectory (mono_string_chars (path));
239 *error=GetLastError ();
246 ves_icall_System_IO_MonoIO_FindFirstFile (MonoString *path, MonoIOStat *stat,
249 WIN32_FIND_DATA data;
255 *error=ERROR_SUCCESS;
257 result = FindFirstFile (mono_string_chars (path), &data);
259 /* note: WIN32_FIND_DATA is an extension of WIN32_FILE_ATTRIBUTE_DATA */
260 while (result != INVALID_HANDLE_VALUE && r) {
261 if ((data.cFileName [0] == '.' && data.cFileName [1] == 0) ||
262 (data.cFileName [0] == '.' && data.cFileName [1] == '.' && data.cFileName [2] == 0)) {
263 r = FindNextFile (result, &data);
265 convert_win32_file_attribute_data ((const WIN32_FILE_ATTRIBUTE_DATA *)&data,
266 &data.cFileName [0], stat);
271 if (result == INVALID_HANDLE_VALUE) {
272 *error=GetLastError ();
276 /* No more files were found, after we discarded . and .. */
278 result = INVALID_HANDLE_VALUE;
279 *error = ERROR_NO_MORE_FILES;
286 ves_icall_System_IO_MonoIO_FindNextFile (HANDLE find, MonoIOStat *stat,
289 WIN32_FIND_DATA data;
294 *error=ERROR_SUCCESS;
296 result = FindNextFile (find, &data);
297 while (result != FALSE) {
298 if ((data.cFileName [0] == '.' && data.cFileName [1] == 0) ||
299 (data.cFileName [0] == '.' && data.cFileName [1] == '.' && data.cFileName [2] == 0)) {
300 result = FindNextFile (find, &data);
302 convert_win32_file_attribute_data ((const WIN32_FILE_ATTRIBUTE_DATA *)&data,
303 &data.cFileName [0], stat);
308 if (result == FALSE) {
309 *error=GetLastError ();
316 ves_icall_System_IO_MonoIO_FindClose (HANDLE find, gint32 *error)
322 *error=ERROR_SUCCESS;
324 ret=FindClose (find);
326 *error=GetLastError ();
333 ves_icall_System_IO_MonoIO_GetCurrentDirectory (gint32 *error)
342 buf = g_new (gunichar2, len);
344 *error=ERROR_SUCCESS;
347 if (GetCurrentDirectory (len, buf) > 0) {
352 result = mono_string_new_utf16 (mono_domain_get (), buf, len);
354 *error=GetLastError ();
362 ves_icall_System_IO_MonoIO_SetCurrentDirectory (MonoString *path,
369 *error=ERROR_SUCCESS;
371 ret=SetCurrentDirectory (mono_string_chars (path));
373 *error=GetLastError ();
380 ves_icall_System_IO_MonoIO_MoveFile (MonoString *path, MonoString *dest,
387 *error=ERROR_SUCCESS;
389 ret=MoveFile (mono_string_chars (path), mono_string_chars (dest));
391 *error=GetLastError ();
398 ves_icall_System_IO_MonoIO_CopyFile (MonoString *path, MonoString *dest,
399 MonoBoolean overwrite, gint32 *error)
405 *error=ERROR_SUCCESS;
407 ret=CopyFile (mono_string_chars (path), mono_string_chars (dest), !overwrite);
409 *error=GetLastError ();
416 ves_icall_System_IO_MonoIO_DeleteFile (MonoString *path, gint32 *error)
422 *error=ERROR_SUCCESS;
424 ret=DeleteFile (mono_string_chars (path));
426 *error=GetLastError ();
433 ves_icall_System_IO_MonoIO_GetFileAttributes (MonoString *path, gint32 *error)
439 *error=ERROR_SUCCESS;
441 ret=GetFileAttributes (mono_string_chars (path));
444 * The definition of INVALID_FILE_ATTRIBUTES in the cygwin win32
445 * headers is wrong, hence this temporary workaround.
447 * http://cygwin.com/ml/cygwin/2003-09/msg01771.html
450 /* if(ret==INVALID_FILE_ATTRIBUTES) { */
451 *error=GetLastError ();
458 ves_icall_System_IO_MonoIO_SetFileAttributes (MonoString *path, gint32 attrs,
465 *error=ERROR_SUCCESS;
467 ret=SetFileAttributes (mono_string_chars (path),
468 convert_attrs (attrs));
470 *error=GetLastError ();
477 ves_icall_System_IO_MonoIO_GetFileType (HANDLE handle, gint32 *error)
483 *error=ERROR_SUCCESS;
485 ret=GetFileType (handle);
486 if(ret==FILE_TYPE_UNKNOWN) {
487 /* Not necessarily an error, but the caller will have
488 * to decide based on the error value.
490 *error=GetLastError ();
497 ves_icall_System_IO_MonoIO_GetFileStat (MonoString *path, MonoIOStat *stat,
501 WIN32_FILE_ATTRIBUTE_DATA data;
505 *error=ERROR_SUCCESS;
507 result = GetFileAttributesEx (mono_string_chars (path), GetFileExInfoStandard, &data);
510 convert_win32_file_attribute_data (&data,
511 mono_string_chars (path),
514 *error=GetLastError ();
521 ves_icall_System_IO_MonoIO_Open (MonoString *filename, gint32 mode,
522 gint32 access_mode, gint32 share,
523 MonoBoolean async, gint32 *error)
529 *error=ERROR_SUCCESS;
531 ret=CreateFile (mono_string_chars (filename),
532 convert_access (access_mode), convert_share (share),
533 NULL, convert_mode (mode),
534 FILE_ATTRIBUTE_NORMAL | ((async) ? FILE_FLAG_OVERLAPPED : 0),
536 if(ret==INVALID_HANDLE_VALUE) {
537 *error=GetLastError ();
544 ves_icall_System_IO_MonoIO_Close (HANDLE handle, gint32 *error)
550 *error=ERROR_SUCCESS;
552 ret=CloseHandle (handle);
554 *error=GetLastError ();
561 ves_icall_System_IO_MonoIO_Read (HANDLE handle, MonoArray *dest,
562 gint32 dest_offset, gint32 count,
571 *error=ERROR_SUCCESS;
573 if (dest_offset + count > mono_array_length (dest))
576 buffer = mono_array_addr (dest, guchar, dest_offset);
577 result = ReadFile (handle, buffer, count, &n, NULL);
580 *error=GetLastError ();
588 ves_icall_System_IO_MonoIO_Write (HANDLE handle, MonoArray *src,
589 gint32 src_offset, gint32 count,
598 *error=ERROR_SUCCESS;
600 if (src_offset + count > mono_array_length (src))
603 buffer = mono_array_addr (src, guchar, src_offset);
604 result = WriteFile (handle, buffer, count, &n, NULL);
607 *error=GetLastError ();
615 ves_icall_System_IO_MonoIO_Seek (HANDLE handle, gint64 offset, gint32 origin,
622 *error=ERROR_SUCCESS;
624 offset_hi = offset >> 32;
625 offset = SetFilePointer (handle, offset & 0xFFFFFFFF, &offset_hi,
626 convert_seekorigin (origin));
628 if(offset==INVALID_SET_FILE_POINTER) {
629 *error=GetLastError ();
632 return offset | ((gint64)offset_hi << 32);
636 ves_icall_System_IO_MonoIO_Flush (HANDLE handle, gint32 *error)
642 *error=ERROR_SUCCESS;
644 ret=FlushFileBuffers (handle);
646 *error=GetLastError ();
653 ves_icall_System_IO_MonoIO_GetLength (HANDLE handle, gint32 *error)
660 *error=ERROR_SUCCESS;
662 length = GetFileSize (handle, &length_hi);
663 if(length==INVALID_FILE_SIZE) {
664 *error=GetLastError ();
667 return length | ((gint64)length_hi << 32);
671 ves_icall_System_IO_MonoIO_SetLength (HANDLE handle, gint64 length,
674 gint64 offset, offset_set;
681 *error=ERROR_SUCCESS;
683 /* save file pointer */
686 offset = SetFilePointer (handle, 0, &offset_hi, FILE_CURRENT);
687 if(offset==INVALID_SET_FILE_POINTER) {
688 *error=GetLastError ();
692 /* extend or truncate */
694 length_hi = length >> 32;
695 offset_set=SetFilePointer (handle, length & 0xFFFFFFFF, &length_hi,
697 if(offset_set==INVALID_SET_FILE_POINTER) {
698 *error=GetLastError ();
702 result = SetEndOfFile (handle);
704 *error=GetLastError ();
708 /* restore file pointer */
710 offset_set=SetFilePointer (handle, offset & 0xFFFFFFFF, &offset_hi,
712 if(offset_set==INVALID_SET_FILE_POINTER) {
713 *error=GetLastError ();
721 ves_icall_System_IO_MonoIO_SetFileTime (HANDLE handle, gint64 creation_time,
722 gint64 last_access_time,
723 gint64 last_write_time, gint32 *error)
726 const FILETIME *creation_filetime;
727 const FILETIME *last_access_filetime;
728 const FILETIME *last_write_filetime;
732 *error=ERROR_SUCCESS;
734 if (creation_time < 0)
735 creation_filetime = NULL;
737 creation_filetime = (FILETIME *)&creation_time;
739 if (last_access_time < 0)
740 last_access_filetime = NULL;
742 last_access_filetime = (FILETIME *)&last_access_time;
744 if (last_write_time < 0)
745 last_write_filetime = NULL;
747 last_write_filetime = (FILETIME *)&last_write_time;
749 ret=SetFileTime (handle, creation_filetime, last_access_filetime, last_write_filetime);
751 *error=GetLastError ();
758 ves_icall_System_IO_MonoIO_get_ConsoleOutput ()
762 return GetStdHandle (STD_OUTPUT_HANDLE);
766 ves_icall_System_IO_MonoIO_get_ConsoleInput ()
770 return GetStdHandle (STD_INPUT_HANDLE);
774 ves_icall_System_IO_MonoIO_get_ConsoleError ()
778 return GetStdHandle (STD_ERROR_HANDLE);
782 ves_icall_System_IO_MonoIO_CreatePipe (HANDLE *read_handle,
783 HANDLE *write_handle)
785 SECURITY_ATTRIBUTES attr;
790 attr.nLength=sizeof(SECURITY_ATTRIBUTES);
791 attr.bInheritHandle=TRUE;
792 attr.lpSecurityDescriptor=NULL;
794 ret=CreatePipe (read_handle, write_handle, &attr, 0);
796 /* FIXME: throw an exception? */
804 ves_icall_System_IO_MonoIO_get_VolumeSeparatorChar ()
808 #if defined (PLATFORM_WIN32)
809 return (gunichar2) 0x003a; /* colon */
811 return (gunichar2) 0x002f; /* forward slash */
816 ves_icall_System_IO_MonoIO_get_DirectorySeparatorChar ()
820 #if defined (PLATFORM_WIN32)
821 return (gunichar2) 0x005c; /* backslash */
823 return (gunichar2) 0x002f; /* forward slash */
828 ves_icall_System_IO_MonoIO_get_AltDirectorySeparatorChar ()
832 #if defined (PLATFORM_WIN32)
833 return (gunichar2) 0x002f; /* forward slash */
835 return (gunichar2) 0x005c; /* backslash */
840 ves_icall_System_IO_MonoIO_get_PathSeparator ()
844 #if defined (PLATFORM_WIN32)
845 return (gunichar2) 0x003b; /* semicolon */
847 return (gunichar2) 0x003a; /* colon */
851 static gunichar2 invalid_path_chars [] = {
852 #if defined (PLATFORM_WIN32)
853 0x0022, /* double quote, which seems allowed in MS.NET but should be rejected */
854 0x003c, /* less than */
855 0x003e, /* greater than */
872 ves_icall_System_IO_MonoIO_get_InvalidPathChars ()
880 domain = mono_domain_get ();
881 chars = mono_array_new (domain, mono_defaults.char_class, 15);
883 n = sizeof (invalid_path_chars) / sizeof (gunichar2);
885 for (i = 0; i < n; ++ i)
886 mono_array_set (chars, gunichar2, i, invalid_path_chars [i]);
892 ves_icall_System_IO_MonoIO_GetTempPath (MonoString **mono_name)
897 name=g_new0 (gunichar2, 256);
899 ret=GetTempPath (256, name);
901 /* Buffer was too short. Try again... */
903 name=g_new0 (gunichar2, ret+2); /* include the terminator */
904 ret=GetTempPath (ret, name);
909 g_message (G_GNUC_PRETTY_FUNCTION
910 ": Temp path is [%s] (len %d)", name, ret);
913 *mono_name=mono_string_new_utf16 (mono_domain_get (), name,
926 ves_icall_System_IO_MonoIO_GetSupportsAsync (void)
930 #ifdef PLATFORM_WIN32
931 /* Seems like BindIoCompletionCallback is not found when compiling...
932 * Disabling AIO support on win. Any one wants to fix this?
935 /* return (g_getenv ("MONO_DISABLE_AIO") == NULL && WINVER >= 0x500); */
936 #elif defined(USE_AIO)
937 if (aio_cancel (-1, NULL) == -1 && errno == ENOSYS)
940 return (g_getenv ("MONO_DISABLE_AIO") == NULL);
946 static WapiOverlapped *
947 get_overlapped_from_fsa (MonoFSAsyncResult *ares)
951 ovl = g_new0 (WapiOverlapped, 1);
952 ovl->Offset = ares->offset;
953 ovl->hEvent = ares->wait_handle;
959 ves_icall_System_IO_MonoIO_BeginRead (HANDLE handle, MonoFSAsyncResult *ares)
966 ovl = get_overlapped_from_fsa (ares);
968 return ReadFile (handle, mono_array_addr (ares->buffer, gchar, ares->offset), ares->count, &bytesread, ovl);
972 ves_icall_System_IO_MonoIO_BeginWrite (HANDLE handle, MonoFSAsyncResult *ares)
974 guint32 byteswritten;
979 ovl = get_overlapped_from_fsa (ares);
981 return WriteFile (handle, mono_array_addr (ares->buffer, gchar, ares->offset), ares->count, &byteswritten, ovl);
984 void ves_icall_System_IO_MonoIO_Lock (HANDLE handle, gint64 position,
985 gint64 length, gint32 *error)
989 *error=ERROR_SUCCESS;
991 ret=LockFile (handle, position & 0xFFFFFFFF, position >> 32,
992 length & 0xFFFFFFFF, length >> 32);
994 *error = GetLastError ();
998 void ves_icall_System_IO_MonoIO_Unlock (HANDLE handle, gint64 position,
999 gint64 length, gint32 *error)
1003 *error=ERROR_SUCCESS;
1005 ret=UnlockFile (handle, position & 0xFFFFFFFF, position >> 32,
1006 length & 0xFFFFFFFF, length >> 32);
1008 *error = GetLastError ();