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;
254 *error=ERROR_SUCCESS;
256 result = FindFirstFile (mono_string_chars (path), &data);
258 /* note: WIN32_FIND_DATA is an extension of WIN32_FILE_ATTRIBUTE_DATA */
260 if (result != INVALID_HANDLE_VALUE) {
261 convert_win32_file_attribute_data ((const WIN32_FILE_ATTRIBUTE_DATA *)&data,
262 &data.cFileName [0], stat);
264 *error=GetLastError ();
271 ves_icall_System_IO_MonoIO_FindNextFile (HANDLE find, MonoIOStat *stat,
274 WIN32_FIND_DATA data;
279 *error=ERROR_SUCCESS;
281 result = FindNextFile (find, &data);
283 convert_win32_file_attribute_data ((const WIN32_FILE_ATTRIBUTE_DATA *)&data,
284 &data.cFileName [0], stat);
286 *error=GetLastError ();
293 ves_icall_System_IO_MonoIO_FindClose (HANDLE find, gint32 *error)
299 *error=ERROR_SUCCESS;
301 ret=FindClose (find);
303 *error=GetLastError ();
310 ves_icall_System_IO_MonoIO_GetCurrentDirectory (gint32 *error)
319 buf = g_new (gunichar2, len);
321 *error=ERROR_SUCCESS;
324 if (GetCurrentDirectory (len, buf) > 0) {
329 result = mono_string_new_utf16 (mono_domain_get (), buf, len);
331 *error=GetLastError ();
339 ves_icall_System_IO_MonoIO_SetCurrentDirectory (MonoString *path,
346 *error=ERROR_SUCCESS;
348 ret=SetCurrentDirectory (mono_string_chars (path));
350 *error=GetLastError ();
357 ves_icall_System_IO_MonoIO_MoveFile (MonoString *path, MonoString *dest,
364 *error=ERROR_SUCCESS;
366 ret=MoveFile (mono_string_chars (path), mono_string_chars (dest));
368 *error=GetLastError ();
375 ves_icall_System_IO_MonoIO_CopyFile (MonoString *path, MonoString *dest,
376 MonoBoolean overwrite, gint32 *error)
382 *error=ERROR_SUCCESS;
384 ret=CopyFile (mono_string_chars (path), mono_string_chars (dest), !overwrite);
386 *error=GetLastError ();
393 ves_icall_System_IO_MonoIO_DeleteFile (MonoString *path, gint32 *error)
399 *error=ERROR_SUCCESS;
401 ret=DeleteFile (mono_string_chars (path));
403 *error=GetLastError ();
410 ves_icall_System_IO_MonoIO_GetFileAttributes (MonoString *path, gint32 *error)
416 *error=ERROR_SUCCESS;
418 ret=GetFileAttributes (mono_string_chars (path));
421 * The definition of INVALID_FILE_ATTRIBUTES in the cygwin win32
422 * headers is wrong, hence this temporary workaround.
424 * http://cygwin.com/ml/cygwin/2003-09/msg01771.html
427 // if(ret==INVALID_FILE_ATTRIBUTES) {
428 *error=GetLastError ();
435 ves_icall_System_IO_MonoIO_SetFileAttributes (MonoString *path, gint32 attrs,
442 *error=ERROR_SUCCESS;
444 ret=SetFileAttributes (mono_string_chars (path),
445 convert_attrs (attrs));
447 *error=GetLastError ();
454 ves_icall_System_IO_MonoIO_GetFileType (HANDLE handle, gint32 *error)
460 *error=ERROR_SUCCESS;
462 ret=GetFileType (handle);
463 if(ret==FILE_TYPE_UNKNOWN) {
464 /* Not necessarily an error, but the caller will have
465 * to decide based on the error value.
467 *error=GetLastError ();
474 ves_icall_System_IO_MonoIO_GetFileStat (MonoString *path, MonoIOStat *stat,
478 WIN32_FILE_ATTRIBUTE_DATA data;
482 *error=ERROR_SUCCESS;
484 result = GetFileAttributesEx (mono_string_chars (path), GetFileExInfoStandard, &data);
487 convert_win32_file_attribute_data (&data,
488 mono_string_chars (path),
491 *error=GetLastError ();
498 ves_icall_System_IO_MonoIO_Open (MonoString *filename, gint32 mode,
499 gint32 access_mode, gint32 share,
500 MonoBoolean async, gint32 *error)
506 *error=ERROR_SUCCESS;
508 ret=CreateFile (mono_string_chars (filename),
509 convert_access (access_mode), convert_share (share),
510 NULL, convert_mode (mode),
511 FILE_ATTRIBUTE_NORMAL | ((async) ? FILE_FLAG_OVERLAPPED : 0),
513 if(ret==INVALID_HANDLE_VALUE) {
514 *error=GetLastError ();
521 ves_icall_System_IO_MonoIO_Close (HANDLE handle, gint32 *error)
527 *error=ERROR_SUCCESS;
529 ret=CloseHandle (handle);
531 *error=GetLastError ();
538 ves_icall_System_IO_MonoIO_Read (HANDLE handle, MonoArray *dest,
539 gint32 dest_offset, gint32 count,
548 *error=ERROR_SUCCESS;
550 if (dest_offset + count > mono_array_length (dest))
553 buffer = mono_array_addr (dest, guchar, dest_offset);
554 result = ReadFile (handle, buffer, count, &n, NULL);
557 *error=GetLastError ();
565 ves_icall_System_IO_MonoIO_Write (HANDLE handle, MonoArray *src,
566 gint32 src_offset, gint32 count,
575 *error=ERROR_SUCCESS;
577 if (src_offset + count > mono_array_length (src))
580 buffer = mono_array_addr (src, guchar, src_offset);
581 result = WriteFile (handle, buffer, count, &n, NULL);
584 *error=GetLastError ();
592 ves_icall_System_IO_MonoIO_Seek (HANDLE handle, gint64 offset, gint32 origin,
599 *error=ERROR_SUCCESS;
601 offset_hi = offset >> 32;
602 offset = SetFilePointer (handle, offset & 0xFFFFFFFF, &offset_hi,
603 convert_seekorigin (origin));
605 if(offset==INVALID_SET_FILE_POINTER) {
606 *error=GetLastError ();
609 return offset | ((gint64)offset_hi << 32);
613 ves_icall_System_IO_MonoIO_Flush (HANDLE handle, gint32 *error)
619 *error=ERROR_SUCCESS;
621 ret=FlushFileBuffers (handle);
623 *error=GetLastError ();
630 ves_icall_System_IO_MonoIO_GetLength (HANDLE handle, gint32 *error)
637 *error=ERROR_SUCCESS;
639 length = GetFileSize (handle, &length_hi);
640 if(length==INVALID_FILE_SIZE) {
641 *error=GetLastError ();
644 return length | ((gint64)length_hi << 32);
648 ves_icall_System_IO_MonoIO_SetLength (HANDLE handle, gint64 length,
651 gint64 offset, offset_set;
658 *error=ERROR_SUCCESS;
660 /* save file pointer */
663 offset = SetFilePointer (handle, 0, &offset_hi, FILE_CURRENT);
664 if(offset==INVALID_SET_FILE_POINTER) {
665 *error=GetLastError ();
669 /* extend or truncate */
671 length_hi = length >> 32;
672 offset_set=SetFilePointer (handle, length & 0xFFFFFFFF, &length_hi,
674 if(offset_set==INVALID_SET_FILE_POINTER) {
675 *error=GetLastError ();
679 result = SetEndOfFile (handle);
681 *error=GetLastError ();
685 /* restore file pointer */
687 offset_set=SetFilePointer (handle, offset & 0xFFFFFFFF, &offset_hi,
689 if(offset_set==INVALID_SET_FILE_POINTER) {
690 *error=GetLastError ();
698 ves_icall_System_IO_MonoIO_SetFileTime (HANDLE handle, gint64 creation_time,
699 gint64 last_access_time,
700 gint64 last_write_time, gint32 *error)
703 const FILETIME *creation_filetime;
704 const FILETIME *last_access_filetime;
705 const FILETIME *last_write_filetime;
709 *error=ERROR_SUCCESS;
711 if (creation_time < 0)
712 creation_filetime = NULL;
714 creation_filetime = (FILETIME *)&creation_time;
716 if (last_access_time < 0)
717 last_access_filetime = NULL;
719 last_access_filetime = (FILETIME *)&last_access_time;
721 if (last_write_time < 0)
722 last_write_filetime = NULL;
724 last_write_filetime = (FILETIME *)&last_write_time;
726 ret=SetFileTime (handle, creation_filetime, last_access_filetime, last_write_filetime);
728 *error=GetLastError ();
735 ves_icall_System_IO_MonoIO_get_ConsoleOutput ()
739 return GetStdHandle (STD_OUTPUT_HANDLE);
743 ves_icall_System_IO_MonoIO_get_ConsoleInput ()
747 return GetStdHandle (STD_INPUT_HANDLE);
751 ves_icall_System_IO_MonoIO_get_ConsoleError ()
755 return GetStdHandle (STD_ERROR_HANDLE);
759 ves_icall_System_IO_MonoIO_CreatePipe (HANDLE *read_handle,
760 HANDLE *write_handle)
762 SECURITY_ATTRIBUTES attr;
767 attr.nLength=sizeof(SECURITY_ATTRIBUTES);
768 attr.bInheritHandle=TRUE;
769 attr.lpSecurityDescriptor=NULL;
771 ret=CreatePipe (read_handle, write_handle, &attr, 0);
773 /* FIXME: throw an exception? */
781 ves_icall_System_IO_MonoIO_get_VolumeSeparatorChar ()
785 #if defined (PLATFORM_WIN32)
786 return (gunichar2) 0x003a; /* colon */
788 return (gunichar2) 0x002f; /* forward slash */
793 ves_icall_System_IO_MonoIO_get_DirectorySeparatorChar ()
797 #if defined (PLATFORM_WIN32)
798 return (gunichar2) 0x005c; /* backslash */
800 return (gunichar2) 0x002f; /* forward slash */
805 ves_icall_System_IO_MonoIO_get_AltDirectorySeparatorChar ()
809 #if defined (PLATFORM_WIN32)
810 return (gunichar2) 0x002f; /* forward slash */
812 return (gunichar2) 0x005c; /* backslash */
817 ves_icall_System_IO_MonoIO_get_PathSeparator ()
821 #if defined (PLATFORM_WIN32)
822 return (gunichar2) 0x003b; /* semicolon */
824 return (gunichar2) 0x003a; /* colon */
828 static gunichar2 invalid_path_chars [] = {
829 #if defined (PLATFORM_WIN32)
830 0x0022, /* double quote, which seems allowed in MS.NET but should be rejected */
831 0x003c, /* less than */
832 0x003e, /* greater than */
849 ves_icall_System_IO_MonoIO_get_InvalidPathChars ()
857 domain = mono_domain_get ();
858 chars = mono_array_new (domain, mono_defaults.char_class, 15);
860 n = sizeof (invalid_path_chars) / sizeof (gunichar2);
862 for (i = 0; i < n; ++ i)
863 mono_array_set (chars, gunichar2, i, invalid_path_chars [i]);
869 ves_icall_System_IO_MonoIO_GetTempPath (MonoString **mono_name)
874 name=g_new0 (gunichar2, 256);
876 ret=GetTempPath (256, name);
878 /* Buffer was too short. Try again... */
880 name=g_new0 (gunichar2, ret+2); /* include the terminator */
881 ret=GetTempPath (ret, name);
886 g_message (G_GNUC_PRETTY_FUNCTION
887 ": Temp path is [%s] (len %d)", name, ret);
890 *mono_name=mono_string_new_utf16 (mono_domain_get (), name,
903 ves_icall_System_IO_MonoIO_GetSupportsAsync (void)
907 #ifdef PLATFORM_WIN32
908 /* Seems like BindIoCompletionCallback is not found when compiling...
909 * Disabling AIO support on win. Any one wants to fix this?
912 /* return (g_getenv ("MONO_DISABLE_AIO") == NULL && WINVER >= 0x500); */
913 #elif defined(USE_AIO)
914 if (aio_cancel (-1, NULL) == -1 && errno == ENOSYS)
917 return (g_getenv ("MONO_DISABLE_AIO") == NULL);
923 static WapiOverlapped *
924 get_overlapped_from_fsa (MonoFSAsyncResult *ares)
928 ovl = g_new0 (WapiOverlapped, 1);
929 ovl->Offset = ares->offset;
930 ovl->hEvent = ares->wait_handle;
936 ves_icall_System_IO_MonoIO_BeginRead (HANDLE handle, MonoFSAsyncResult *ares)
943 ovl = get_overlapped_from_fsa (ares);
945 return ReadFile (handle, mono_array_addr (ares->buffer, gchar, ares->offset), ares->count, &bytesread, ovl);
949 ves_icall_System_IO_MonoIO_BeginWrite (HANDLE handle, MonoFSAsyncResult *ares)
951 guint32 byteswritten;
956 ovl = get_overlapped_from_fsa (ares);
958 return WriteFile (handle, mono_array_addr (ares->buffer, gchar, ares->offset), ares->count, &byteswritten, ovl);