2 * io.c: File, console and find handles
5 * Dick Porter (dick@ximian.com)
7 * (C) 2002 Ximian, Inc.
8 * Copyright (c) 2002-2006 Novell, Inc.
9 * Copyright 2011 Xamarin Inc (http://www.xamarin.com).
10 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
20 #ifdef HAVE_SYS_STATVFS_H
21 #include <sys/statvfs.h>
23 #if defined(HAVE_SYS_STATFS_H)
24 #include <sys/statfs.h>
26 #if defined(HAVE_SYS_PARAM_H) && defined(HAVE_SYS_MOUNT_H)
27 #include <sys/param.h>
28 #include <sys/mount.h>
30 #include <sys/types.h>
34 #include <sys/ioctl.h>
36 #include <mono/utils/linux_magic.h>
39 #include <mono/io-layer/wapi.h>
40 #include <mono/io-layer/wapi-private.h>
41 #include <mono/io-layer/io-private.h>
42 #include <mono/io-layer/io-portability.h>
43 #include <mono/io-layer/io-trace.h>
44 #include <mono/utils/strenc.h>
45 #include <mono/utils/mono-once.h>
46 #include <mono/utils/mono-logger-internals.h>
47 #include <mono/metadata/w32handle.h>
50 * If SHM is disabled, this will point to a hash of _WapiFileShare structures, otherwise
51 * it will be NULL. We use this instead of _wapi_fileshare_layout to avoid allocating a
54 static GHashTable *file_share_hash;
55 static mono_mutex_t file_share_mutex;
58 time_t_to_filetime (time_t timeval, WapiFileTime *filetime)
62 ticks = ((guint64)timeval * 10000000) + 116444736000000000ULL;
63 filetime->dwLowDateTime = ticks & 0xFFFFFFFF;
64 filetime->dwHighDateTime = ticks >> 32;
68 _wapi_handle_share_release (_WapiFileShare *share_info)
70 /* Prevent new entries racing with us */
71 mono_os_mutex_lock (&file_share_mutex);
73 g_assert (share_info->handle_refs > 0);
74 share_info->handle_refs -= 1;
76 if (share_info->handle_refs == 0)
77 g_hash_table_remove (file_share_hash, share_info);
79 mono_os_mutex_unlock (&file_share_mutex);
83 wapi_share_info_equal (gconstpointer ka, gconstpointer kb)
85 const _WapiFileShare *s1 = (const _WapiFileShare *)ka;
86 const _WapiFileShare *s2 = (const _WapiFileShare *)kb;
88 return (s1->device == s2->device && s1->inode == s2->inode) ? 1 : 0;
92 wapi_share_info_hash (gconstpointer data)
94 const _WapiFileShare *s = (const _WapiFileShare *)data;
100 _wapi_handle_get_or_set_share (guint64 device, guint64 inode, guint32 new_sharemode, guint32 new_access,
101 guint32 *old_sharemode, guint32 *old_access, struct _WapiFileShare **share_info)
103 struct _WapiFileShare *file_share;
104 gboolean exists = FALSE;
106 /* Prevent new entries racing with us */
107 mono_os_mutex_lock (&file_share_mutex);
112 * Instead of allocating a 4MB array, we use a hash table to keep track of this
113 * info. This is needed even if SHM is disabled, to track sharing inside
114 * the current process.
116 if (!file_share_hash)
117 file_share_hash = g_hash_table_new_full (wapi_share_info_hash, wapi_share_info_equal, NULL, g_free);
122 file_share = (_WapiFileShare *)g_hash_table_lookup (file_share_hash, &tmp);
124 *old_sharemode = file_share->sharemode;
125 *old_access = file_share->access;
126 *share_info = file_share;
128 g_assert (file_share->handle_refs > 0);
129 file_share->handle_refs += 1;
133 file_share = g_new0 (_WapiFileShare, 1);
135 file_share->device = device;
136 file_share->inode = inode;
137 file_share->opened_by_pid = wapi_getpid ();
138 file_share->sharemode = new_sharemode;
139 file_share->access = new_access;
140 file_share->handle_refs = 1;
141 *share_info = file_share;
143 g_hash_table_insert (file_share_hash, file_share, file_share);
146 mono_os_mutex_unlock (&file_share_mutex);
151 static void file_close (gpointer handle, gpointer data);
152 static void file_details (gpointer data);
153 static const gchar* file_typename (void);
154 static gsize file_typesize (void);
155 static WapiFileType file_getfiletype(void);
156 static gboolean file_read(gpointer handle, gpointer buffer,
157 guint32 numbytes, guint32 *bytesread,
158 WapiOverlapped *overlapped);
159 static gboolean file_write(gpointer handle, gconstpointer buffer,
160 guint32 numbytes, guint32 *byteswritten,
161 WapiOverlapped *overlapped);
162 static gboolean file_flush(gpointer handle);
163 static guint32 file_seek(gpointer handle, gint32 movedistance,
164 gint32 *highmovedistance, WapiSeekMethod method);
165 static gboolean file_setendoffile(gpointer handle);
166 static guint32 file_getfilesize(gpointer handle, guint32 *highsize);
167 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
168 WapiFileTime *last_access,
169 WapiFileTime *last_write);
170 static gboolean file_setfiletime(gpointer handle,
171 const WapiFileTime *create_time,
172 const WapiFileTime *last_access,
173 const WapiFileTime *last_write);
174 static guint32 GetDriveTypeFromPath (const gchar *utf8_root_path_name);
176 /* File handle is only signalled for overlapped IO */
177 static MonoW32HandleOps _wapi_file_ops = {
178 file_close, /* close */
182 NULL, /* special_wait */
184 file_details, /* details */
185 file_typename, /* typename */
186 file_typesize, /* typesize */
189 static void console_close (gpointer handle, gpointer data);
190 static void console_details (gpointer data);
191 static const gchar* console_typename (void);
192 static gsize console_typesize (void);
193 static WapiFileType console_getfiletype(void);
194 static gboolean console_read(gpointer handle, gpointer buffer,
195 guint32 numbytes, guint32 *bytesread,
196 WapiOverlapped *overlapped);
197 static gboolean console_write(gpointer handle, gconstpointer buffer,
198 guint32 numbytes, guint32 *byteswritten,
199 WapiOverlapped *overlapped);
201 /* Console is mostly the same as file, except it can block waiting for
204 static MonoW32HandleOps _wapi_console_ops = {
205 console_close, /* close */
209 NULL, /* special_wait */
211 console_details, /* details */
212 console_typename, /* typename */
213 console_typesize, /* typesize */
216 static const gchar* find_typename (void);
217 static gsize find_typesize (void);
219 static MonoW32HandleOps _wapi_find_ops = {
224 NULL, /* special_wait */
227 find_typename, /* typename */
228 find_typesize, /* typesize */
231 static void pipe_close (gpointer handle, gpointer data);
232 static void pipe_details (gpointer data);
233 static const gchar* pipe_typename (void);
234 static gsize pipe_typesize (void);
235 static WapiFileType pipe_getfiletype (void);
236 static gboolean pipe_read (gpointer handle, gpointer buffer, guint32 numbytes,
237 guint32 *bytesread, WapiOverlapped *overlapped);
238 static gboolean pipe_write (gpointer handle, gconstpointer buffer,
239 guint32 numbytes, guint32 *byteswritten,
240 WapiOverlapped *overlapped);
244 static MonoW32HandleOps _wapi_pipe_ops = {
245 pipe_close, /* close */
249 NULL, /* special_wait */
251 pipe_details, /* details */
252 pipe_typename, /* typename */
253 pipe_typesize, /* typesize */
256 static const struct {
257 /* File, console and pipe handles */
258 WapiFileType (*getfiletype)(void);
260 /* File, console and pipe handles */
261 gboolean (*readfile)(gpointer handle, gpointer buffer,
262 guint32 numbytes, guint32 *bytesread,
263 WapiOverlapped *overlapped);
264 gboolean (*writefile)(gpointer handle, gconstpointer buffer,
265 guint32 numbytes, guint32 *byteswritten,
266 WapiOverlapped *overlapped);
267 gboolean (*flushfile)(gpointer handle);
270 guint32 (*seek)(gpointer handle, gint32 movedistance,
271 gint32 *highmovedistance, WapiSeekMethod method);
272 gboolean (*setendoffile)(gpointer handle);
273 guint32 (*getfilesize)(gpointer handle, guint32 *highsize);
274 gboolean (*getfiletime)(gpointer handle, WapiFileTime *create_time,
275 WapiFileTime *last_access,
276 WapiFileTime *last_write);
277 gboolean (*setfiletime)(gpointer handle,
278 const WapiFileTime *create_time,
279 const WapiFileTime *last_access,
280 const WapiFileTime *last_write);
281 } io_ops[MONO_W32HANDLE_COUNT]={
282 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
285 file_read, file_write,
286 file_flush, file_seek,
292 {console_getfiletype,
295 NULL, NULL, NULL, NULL, NULL, NULL},
297 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
299 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
301 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
303 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
304 /* socket (will need at least read and write) */
305 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
307 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
309 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
314 NULL, NULL, NULL, NULL, NULL, NULL},
317 static gboolean lock_while_writing = FALSE;
319 /* Some utility functions.
323 * Check if a file is writable by the current user.
325 * This is is a best effort kind of thing. It assumes a reasonable sane set
326 * of permissions by the underlying OS.
328 * We generally assume that basic unix permission bits are authoritative. Which might not
329 * be the case under systems with extended permissions systems (posix ACLs, SELinux, OSX/iOS sandboxing, etc)
331 * The choice of access as the fallback is due to the expected lower overhead compared to trying to open the file.
333 * The only expected problem with using access are for root, setuid or setgid programs as access is not consistent
334 * under those situations. It's to be expected that this should not happen in practice as those bits are very dangerous
335 * and should not be used with a dynamic runtime.
338 is_file_writable (struct stat *st, const char *path)
341 // OS X Finder "locked" or `ls -lO` "uchg".
342 // This only covers one of several cases where an OS X file could be unwritable through special flags.
343 if (st->st_flags & (UF_IMMUTABLE|SF_IMMUTABLE))
347 /* Is it globally writable? */
348 if (st->st_mode & S_IWOTH)
351 /* Am I the owner? */
352 if ((st->st_uid == geteuid ()) && (st->st_mode & S_IWUSR))
355 /* Am I in the same group? */
356 if ((st->st_gid == getegid ()) && (st->st_mode & S_IWGRP))
359 /* Fallback to using access(2). It's not ideal as it might not take into consideration euid/egid
360 * but it's the only sane option we have on unix.
362 return access (path, W_OK) == 0;
366 static guint32 _wapi_stat_to_file_attributes (const gchar *pathname,
373 /* FIXME: this could definitely be better, but there seems to
374 * be no pattern to the attributes that are set
377 /* Sockets (0140000) != Directory (040000) + Regular file (0100000) */
378 if (S_ISSOCK (buf->st_mode))
379 buf->st_mode &= ~S_IFSOCK; /* don't consider socket protection */
381 filename = _wapi_basename (pathname);
383 if (S_ISDIR (buf->st_mode)) {
384 attrs = FILE_ATTRIBUTE_DIRECTORY;
385 if (!is_file_writable (buf, pathname)) {
386 attrs |= FILE_ATTRIBUTE_READONLY;
388 if (filename[0] == '.') {
389 attrs |= FILE_ATTRIBUTE_HIDDEN;
392 if (!is_file_writable (buf, pathname)) {
393 attrs = FILE_ATTRIBUTE_READONLY;
395 if (filename[0] == '.') {
396 attrs |= FILE_ATTRIBUTE_HIDDEN;
398 } else if (filename[0] == '.') {
399 attrs = FILE_ATTRIBUTE_HIDDEN;
401 attrs = FILE_ATTRIBUTE_NORMAL;
406 if (S_ISLNK (lbuf->st_mode)) {
407 attrs |= FILE_ATTRIBUTE_REPARSE_POINT;
417 _wapi_set_last_error_from_errno (void)
419 SetLastError (_wapi_get_win32_file_error (errno));
422 static void _wapi_set_last_path_error_from_errno (const gchar *dir,
425 if (errno == ENOENT) {
426 /* Check the path - if it's a missing directory then
427 * we need to set PATH_NOT_FOUND not FILE_NOT_FOUND
433 dirname = _wapi_dirname (path);
435 dirname = g_strdup (dir);
438 if (_wapi_access (dirname, F_OK) == 0) {
439 SetLastError (ERROR_FILE_NOT_FOUND);
441 SetLastError (ERROR_PATH_NOT_FOUND);
446 _wapi_set_last_error_from_errno ();
452 static void file_close (gpointer handle, gpointer data)
454 struct _WapiHandle_file *file_handle = (struct _WapiHandle_file *)data;
455 int fd = file_handle->fd;
457 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing file handle %p [%s]", __func__, handle,
458 file_handle->filename);
460 if (file_handle->attrs & FILE_FLAG_DELETE_ON_CLOSE)
461 _wapi_unlink (file_handle->filename);
463 g_free (file_handle->filename);
465 if (file_handle->share_info)
466 _wapi_handle_share_release (file_handle->share_info);
471 static void file_details (gpointer data)
473 struct _WapiHandle_file *file = (struct _WapiHandle_file *)data;
475 g_print ("[%20s] acc: %c%c%c, shr: %c%c%c, attrs: %5u",
477 file->fileaccess&GENERIC_READ?'R':'.',
478 file->fileaccess&GENERIC_WRITE?'W':'.',
479 file->fileaccess&GENERIC_EXECUTE?'X':'.',
480 file->sharemode&FILE_SHARE_READ?'R':'.',
481 file->sharemode&FILE_SHARE_WRITE?'W':'.',
482 file->sharemode&FILE_SHARE_DELETE?'D':'.',
486 static const gchar* file_typename (void)
491 static gsize file_typesize (void)
493 return sizeof (struct _WapiHandle_file);
496 static WapiFileType file_getfiletype(void)
498 return(FILE_TYPE_DISK);
501 static gboolean file_read(gpointer handle, gpointer buffer,
502 guint32 numbytes, guint32 *bytesread,
503 WapiOverlapped *overlapped)
505 struct _WapiHandle_file *file_handle;
508 MonoThreadInfo *info = mono_thread_info_current ();
510 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
511 (gpointer *)&file_handle);
513 g_warning ("%s: error looking up file handle %p", __func__,
515 SetLastError (ERROR_INVALID_HANDLE);
519 fd = file_handle->fd;
520 if(bytesread!=NULL) {
524 if(!(file_handle->fileaccess & GENERIC_READ) &&
525 !(file_handle->fileaccess & GENERIC_ALL)) {
526 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
527 __func__, handle, file_handle->fileaccess);
529 SetLastError (ERROR_ACCESS_DENIED);
534 ret = read (fd, buffer, numbytes);
535 } while (ret == -1 && errno == EINTR &&
536 !mono_thread_info_is_interrupt_state (info));
541 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
542 handle, strerror(err));
543 SetLastError (_wapi_get_win32_file_error (err));
547 if (bytesread != NULL) {
554 static gboolean file_write(gpointer handle, gconstpointer buffer,
555 guint32 numbytes, guint32 *byteswritten,
556 WapiOverlapped *overlapped G_GNUC_UNUSED)
558 struct _WapiHandle_file *file_handle;
561 off_t current_pos = 0;
562 MonoThreadInfo *info = mono_thread_info_current ();
564 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
565 (gpointer *)&file_handle);
567 g_warning ("%s: error looking up file handle %p", __func__,
569 SetLastError (ERROR_INVALID_HANDLE);
573 fd = file_handle->fd;
575 if(byteswritten!=NULL) {
579 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
580 !(file_handle->fileaccess & GENERIC_ALL)) {
581 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
583 SetLastError (ERROR_ACCESS_DENIED);
587 if (lock_while_writing) {
588 /* Need to lock the region we're about to write to,
589 * because we only do advisory locking on POSIX
592 current_pos = lseek (fd, (off_t)0, SEEK_CUR);
593 if (current_pos == -1) {
594 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
595 handle, strerror (errno));
596 _wapi_set_last_error_from_errno ();
600 if (_wapi_lock_file_region (fd, current_pos,
601 numbytes) == FALSE) {
602 /* The error has already been set */
608 ret = write (fd, buffer, numbytes);
609 } while (ret == -1 && errno == EINTR &&
610 !mono_thread_info_is_interrupt_state (info));
612 if (lock_while_writing) {
613 _wapi_unlock_file_region (fd, current_pos, numbytes);
617 if (errno == EINTR) {
620 _wapi_set_last_error_from_errno ();
622 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
623 __func__, handle, strerror(errno));
628 if (byteswritten != NULL) {
634 static gboolean file_flush(gpointer handle)
636 struct _WapiHandle_file *file_handle;
640 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
641 (gpointer *)&file_handle);
643 g_warning ("%s: error looking up file handle %p", __func__,
645 SetLastError (ERROR_INVALID_HANDLE);
649 fd = file_handle->fd;
651 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
652 !(file_handle->fileaccess & GENERIC_ALL)) {
653 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
655 SetLastError (ERROR_ACCESS_DENIED);
661 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fsync of handle %p error: %s", __func__, handle,
664 _wapi_set_last_error_from_errno ();
671 static guint32 file_seek(gpointer handle, gint32 movedistance,
672 gint32 *highmovedistance, WapiSeekMethod method)
674 struct _WapiHandle_file *file_handle;
676 gint64 offset, newpos;
680 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
681 (gpointer *)&file_handle);
683 g_warning ("%s: error looking up file handle %p", __func__,
685 SetLastError (ERROR_INVALID_HANDLE);
686 return(INVALID_SET_FILE_POINTER);
689 fd = file_handle->fd;
691 if(!(file_handle->fileaccess & GENERIC_READ) &&
692 !(file_handle->fileaccess & GENERIC_WRITE) &&
693 !(file_handle->fileaccess & GENERIC_ALL)) {
694 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
696 SetLastError (ERROR_ACCESS_DENIED);
697 return(INVALID_SET_FILE_POINTER);
711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: invalid seek type %d", __func__, method);
713 SetLastError (ERROR_INVALID_PARAMETER);
714 return(INVALID_SET_FILE_POINTER);
717 #ifdef HAVE_LARGE_FILE_SUPPORT
718 if(highmovedistance==NULL) {
720 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting offset to %lld (low %d)", __func__,
721 offset, movedistance);
723 offset=((gint64) *highmovedistance << 32) | (guint32)movedistance;
725 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting offset to %lld 0x%llx (high %d 0x%x, low %d 0x%x)", __func__, offset, offset, *highmovedistance, *highmovedistance, movedistance, movedistance);
731 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: moving handle %p by %lld bytes from %d", __func__,
732 handle, (long long)offset, whence);
734 #ifdef PLATFORM_ANDROID
735 /* bionic doesn't support -D_FILE_OFFSET_BITS=64 */
736 newpos=lseek64(fd, offset, whence);
738 newpos=lseek(fd, offset, whence);
741 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek on handle %p returned error %s",
742 __func__, handle, strerror(errno));
744 _wapi_set_last_error_from_errno ();
745 return(INVALID_SET_FILE_POINTER);
748 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek returns %lld", __func__, newpos);
750 #ifdef HAVE_LARGE_FILE_SUPPORT
751 ret=newpos & 0xFFFFFFFF;
752 if(highmovedistance!=NULL) {
753 *highmovedistance=newpos>>32;
757 if(highmovedistance!=NULL) {
758 /* Accurate, but potentially dodgy :-) */
763 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: move of handle %p returning %d/%d", __func__,
764 handle, ret, highmovedistance==NULL?0:*highmovedistance);
769 static gboolean file_setendoffile(gpointer handle)
771 struct _WapiHandle_file *file_handle;
776 MonoThreadInfo *info = mono_thread_info_current ();
778 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
779 (gpointer *)&file_handle);
781 g_warning ("%s: error looking up file handle %p", __func__,
783 SetLastError (ERROR_INVALID_HANDLE);
786 fd = file_handle->fd;
788 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
789 !(file_handle->fileaccess & GENERIC_ALL)) {
790 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
792 SetLastError (ERROR_ACCESS_DENIED);
796 /* Find the current file position, and the file length. If
797 * the file position is greater than the length, write to
798 * extend the file with a hole. If the file position is less
799 * than the length, truncate the file.
802 ret=fstat(fd, &statbuf);
804 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
805 handle, strerror(errno));
807 _wapi_set_last_error_from_errno ();
811 pos=lseek(fd, (off_t)0, SEEK_CUR);
813 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
814 handle, strerror(errno));
816 _wapi_set_last_error_from_errno ();
820 #ifdef FTRUNCATE_DOESNT_EXTEND
821 off_t size = statbuf.st_size;
822 /* I haven't bothered to write the configure.ac stuff for this
823 * because I don't know if any platform needs it. I'm leaving
824 * this code just in case though
827 /* Extend the file. Use write() here, because some
828 * manuals say that ftruncate() behaviour is undefined
829 * when the file needs extending. The POSIX spec says
830 * that on XSI-conformant systems it extends, so if
831 * every system we care about conforms, then we can
835 ret = write (fd, "", 1);
836 } while (ret == -1 && errno == EINTR &&
837 !mono_thread_info_is_interrupt_state (info));
840 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p extend write failed: %s", __func__, handle, strerror(errno));
842 _wapi_set_last_error_from_errno ();
846 /* And put the file position back after the write */
847 ret = lseek (fd, pos, SEEK_SET);
849 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p second lseek failed: %s",
850 __func__, handle, strerror(errno));
852 _wapi_set_last_error_from_errno ();
858 /* Native Client has no ftruncate function, even in standalone sel_ldr. */
859 #ifndef __native_client__
860 /* always truncate, because the extend write() adds an extra
861 * byte to the end of the file
864 ret=ftruncate(fd, pos);
866 while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
868 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ftruncate failed: %s", __func__,
869 handle, strerror(errno));
871 _wapi_set_last_error_from_errno ();
879 static guint32 file_getfilesize(gpointer handle, guint32 *highsize)
881 struct _WapiHandle_file *file_handle;
888 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
889 (gpointer *)&file_handle);
891 g_warning ("%s: error looking up file handle %p", __func__,
893 SetLastError (ERROR_INVALID_HANDLE);
894 return(INVALID_FILE_SIZE);
896 fd = file_handle->fd;
898 if(!(file_handle->fileaccess & GENERIC_READ) &&
899 !(file_handle->fileaccess & GENERIC_WRITE) &&
900 !(file_handle->fileaccess & GENERIC_ALL)) {
901 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
903 SetLastError (ERROR_ACCESS_DENIED);
904 return(INVALID_FILE_SIZE);
907 /* If the file has a size with the low bits 0xFFFFFFFF the
908 * caller can't tell if this is an error, so clear the error
911 SetLastError (ERROR_SUCCESS);
913 ret = fstat(fd, &statbuf);
915 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
916 handle, strerror(errno));
918 _wapi_set_last_error_from_errno ();
919 return(INVALID_FILE_SIZE);
922 /* fstat indicates block devices as zero-length, so go a different path */
924 if (S_ISBLK(statbuf.st_mode)) {
926 if (ioctl(fd, BLKGETSIZE64, &bigsize) < 0) {
927 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ioctl BLKGETSIZE64 failed: %s",
928 __func__, handle, strerror(errno));
930 _wapi_set_last_error_from_errno ();
931 return(INVALID_FILE_SIZE);
934 size = bigsize & 0xFFFFFFFF;
935 if (highsize != NULL) {
936 *highsize = bigsize>>32;
939 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning block device size %d/%d",
940 __func__, size, *highsize);
946 #ifdef HAVE_LARGE_FILE_SUPPORT
947 size = statbuf.st_size & 0xFFFFFFFF;
948 if (highsize != NULL) {
949 *highsize = statbuf.st_size>>32;
952 if (highsize != NULL) {
953 /* Accurate, but potentially dodgy :-) */
956 size = statbuf.st_size;
959 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning size %d/%d", __func__, size, *highsize);
964 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
965 WapiFileTime *last_access,
966 WapiFileTime *last_write)
968 struct _WapiHandle_file *file_handle;
971 guint64 create_ticks, access_ticks, write_ticks;
974 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
975 (gpointer *)&file_handle);
977 g_warning ("%s: error looking up file handle %p", __func__,
979 SetLastError (ERROR_INVALID_HANDLE);
982 fd = file_handle->fd;
984 if(!(file_handle->fileaccess & GENERIC_READ) &&
985 !(file_handle->fileaccess & GENERIC_ALL)) {
986 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
987 __func__, handle, file_handle->fileaccess);
989 SetLastError (ERROR_ACCESS_DENIED);
993 ret=fstat(fd, &statbuf);
995 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
998 _wapi_set_last_error_from_errno ();
1002 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: atime: %ld ctime: %ld mtime: %ld", __func__,
1003 statbuf.st_atime, statbuf.st_ctime,
1006 /* Try and guess a meaningful create time by using the older
1009 /* The magic constant comes from msdn documentation
1010 * "Converting a time_t Value to a File Time"
1012 if(statbuf.st_atime < statbuf.st_ctime) {
1013 create_ticks=((guint64)statbuf.st_atime*10000000)
1014 + 116444736000000000ULL;
1016 create_ticks=((guint64)statbuf.st_ctime*10000000)
1017 + 116444736000000000ULL;
1020 access_ticks=((guint64)statbuf.st_atime*10000000)+116444736000000000ULL;
1021 write_ticks=((guint64)statbuf.st_mtime*10000000)+116444736000000000ULL;
1023 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: aticks: %llu cticks: %llu wticks: %llu", __func__,
1024 access_ticks, create_ticks, write_ticks);
1026 if(create_time!=NULL) {
1027 create_time->dwLowDateTime = create_ticks & 0xFFFFFFFF;
1028 create_time->dwHighDateTime = create_ticks >> 32;
1031 if(last_access!=NULL) {
1032 last_access->dwLowDateTime = access_ticks & 0xFFFFFFFF;
1033 last_access->dwHighDateTime = access_ticks >> 32;
1036 if(last_write!=NULL) {
1037 last_write->dwLowDateTime = write_ticks & 0xFFFFFFFF;
1038 last_write->dwHighDateTime = write_ticks >> 32;
1044 static gboolean file_setfiletime(gpointer handle,
1045 const WapiFileTime *create_time G_GNUC_UNUSED,
1046 const WapiFileTime *last_access,
1047 const WapiFileTime *last_write)
1049 struct _WapiHandle_file *file_handle;
1051 struct utimbuf utbuf;
1052 struct stat statbuf;
1053 guint64 access_ticks, write_ticks;
1056 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
1057 (gpointer *)&file_handle);
1059 g_warning ("%s: error looking up file handle %p", __func__,
1061 SetLastError (ERROR_INVALID_HANDLE);
1064 fd = file_handle->fd;
1066 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
1067 !(file_handle->fileaccess & GENERIC_ALL)) {
1068 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
1070 SetLastError (ERROR_ACCESS_DENIED);
1074 if(file_handle->filename == NULL) {
1075 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p unknown filename", __func__, handle);
1077 SetLastError (ERROR_INVALID_HANDLE);
1081 /* Get the current times, so we can put the same times back in
1082 * the event that one of the FileTime structs is NULL
1084 ret=fstat (fd, &statbuf);
1086 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
1089 SetLastError (ERROR_INVALID_PARAMETER);
1093 if(last_access!=NULL) {
1094 access_ticks=((guint64)last_access->dwHighDateTime << 32) +
1095 last_access->dwLowDateTime;
1096 /* This is (time_t)0. We can actually go to INT_MIN,
1097 * but this will do for now.
1099 if (access_ticks < 116444736000000000ULL) {
1100 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set access time too early",
1102 SetLastError (ERROR_INVALID_PARAMETER);
1106 if (sizeof (utbuf.actime) == 4 && ((access_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1107 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time that is too big for a 32bits time_t",
1109 SetLastError (ERROR_INVALID_PARAMETER);
1113 utbuf.actime=(access_ticks - 116444736000000000ULL) / 10000000;
1115 utbuf.actime=statbuf.st_atime;
1118 if(last_write!=NULL) {
1119 write_ticks=((guint64)last_write->dwHighDateTime << 32) +
1120 last_write->dwLowDateTime;
1121 /* This is (time_t)0. We can actually go to INT_MIN,
1122 * but this will do for now.
1124 if (write_ticks < 116444736000000000ULL) {
1125 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time too early",
1127 SetLastError (ERROR_INVALID_PARAMETER);
1130 if (sizeof (utbuf.modtime) == 4 && ((write_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1131 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time that is too big for a 32bits time_t",
1133 SetLastError (ERROR_INVALID_PARAMETER);
1137 utbuf.modtime=(write_ticks - 116444736000000000ULL) / 10000000;
1139 utbuf.modtime=statbuf.st_mtime;
1142 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting handle %p access %ld write %ld", __func__,
1143 handle, utbuf.actime, utbuf.modtime);
1145 ret = _wapi_utime (file_handle->filename, &utbuf);
1147 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p [%s] utime failed: %s", __func__,
1148 handle, file_handle->filename, strerror(errno));
1150 SetLastError (ERROR_INVALID_PARAMETER);
1157 static void console_close (gpointer handle, gpointer data)
1159 struct _WapiHandle_file *console_handle = (struct _WapiHandle_file *)data;
1160 int fd = console_handle->fd;
1162 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing console handle %p", __func__, handle);
1164 g_free (console_handle->filename);
1167 if (console_handle->share_info)
1168 _wapi_handle_share_release (console_handle->share_info);
1173 static void console_details (gpointer data)
1175 file_details (data);
1178 static const gchar* console_typename (void)
1183 static gsize console_typesize (void)
1185 return sizeof (struct _WapiHandle_file);
1188 static WapiFileType console_getfiletype(void)
1190 return(FILE_TYPE_CHAR);
1193 static gboolean console_read(gpointer handle, gpointer buffer,
1194 guint32 numbytes, guint32 *bytesread,
1195 WapiOverlapped *overlapped G_GNUC_UNUSED)
1197 struct _WapiHandle_file *console_handle;
1200 MonoThreadInfo *info = mono_thread_info_current ();
1202 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1203 (gpointer *)&console_handle);
1205 g_warning ("%s: error looking up console handle %p", __func__,
1207 SetLastError (ERROR_INVALID_HANDLE);
1210 fd = console_handle->fd;
1212 if(bytesread!=NULL) {
1216 if(!(console_handle->fileaccess & GENERIC_READ) &&
1217 !(console_handle->fileaccess & GENERIC_ALL)) {
1218 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1219 __func__, handle, console_handle->fileaccess);
1221 SetLastError (ERROR_ACCESS_DENIED);
1226 ret=read(fd, buffer, numbytes);
1227 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1230 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__, handle,
1233 _wapi_set_last_error_from_errno ();
1237 if(bytesread!=NULL) {
1244 static gboolean console_write(gpointer handle, gconstpointer buffer,
1245 guint32 numbytes, guint32 *byteswritten,
1246 WapiOverlapped *overlapped G_GNUC_UNUSED)
1248 struct _WapiHandle_file *console_handle;
1251 MonoThreadInfo *info = mono_thread_info_current ();
1253 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1254 (gpointer *)&console_handle);
1256 g_warning ("%s: error looking up console handle %p", __func__,
1258 SetLastError (ERROR_INVALID_HANDLE);
1261 fd = console_handle->fd;
1263 if(byteswritten!=NULL) {
1267 if(!(console_handle->fileaccess & GENERIC_WRITE) &&
1268 !(console_handle->fileaccess & GENERIC_ALL)) {
1269 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, console_handle->fileaccess);
1271 SetLastError (ERROR_ACCESS_DENIED);
1276 ret = write(fd, buffer, numbytes);
1277 } while (ret == -1 && errno == EINTR &&
1278 !mono_thread_info_is_interrupt_state (info));
1281 if (errno == EINTR) {
1284 _wapi_set_last_error_from_errno ();
1286 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
1287 __func__, handle, strerror(errno));
1292 if(byteswritten!=NULL) {
1299 static const gchar* find_typename (void)
1304 static gsize find_typesize (void)
1306 return sizeof (struct _WapiHandle_find);
1309 static void pipe_close (gpointer handle, gpointer data)
1311 struct _WapiHandle_file *pipe_handle = (struct _WapiHandle_file*)data;
1312 int fd = pipe_handle->fd;
1314 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing pipe handle %p fd %d", __func__, handle, fd);
1316 /* No filename with pipe handles */
1318 if (pipe_handle->share_info)
1319 _wapi_handle_share_release (pipe_handle->share_info);
1324 static void pipe_details (gpointer data)
1326 file_details (data);
1329 static const gchar* pipe_typename (void)
1334 static gsize pipe_typesize (void)
1336 return sizeof (struct _WapiHandle_file);
1339 static WapiFileType pipe_getfiletype(void)
1341 return(FILE_TYPE_PIPE);
1344 static gboolean pipe_read (gpointer handle, gpointer buffer,
1345 guint32 numbytes, guint32 *bytesread,
1346 WapiOverlapped *overlapped G_GNUC_UNUSED)
1348 struct _WapiHandle_file *pipe_handle;
1351 MonoThreadInfo *info = mono_thread_info_current ();
1353 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1354 (gpointer *)&pipe_handle);
1356 g_warning ("%s: error looking up pipe handle %p", __func__,
1358 SetLastError (ERROR_INVALID_HANDLE);
1361 fd = pipe_handle->fd;
1363 if(bytesread!=NULL) {
1367 if(!(pipe_handle->fileaccess & GENERIC_READ) &&
1368 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1369 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1370 __func__, handle, pipe_handle->fileaccess);
1372 SetLastError (ERROR_ACCESS_DENIED);
1376 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: reading up to %d bytes from pipe %p", __func__,
1380 ret=read(fd, buffer, numbytes);
1381 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1384 if (errno == EINTR) {
1387 _wapi_set_last_error_from_errno ();
1389 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
1390 handle, strerror(errno));
1396 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read %d bytes from pipe %p", __func__, ret, handle);
1398 if(bytesread!=NULL) {
1405 static gboolean pipe_write(gpointer handle, gconstpointer buffer,
1406 guint32 numbytes, guint32 *byteswritten,
1407 WapiOverlapped *overlapped G_GNUC_UNUSED)
1409 struct _WapiHandle_file *pipe_handle;
1412 MonoThreadInfo *info = mono_thread_info_current ();
1414 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1415 (gpointer *)&pipe_handle);
1417 g_warning ("%s: error looking up pipe handle %p", __func__,
1419 SetLastError (ERROR_INVALID_HANDLE);
1422 fd = pipe_handle->fd;
1424 if(byteswritten!=NULL) {
1428 if(!(pipe_handle->fileaccess & GENERIC_WRITE) &&
1429 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1430 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, pipe_handle->fileaccess);
1432 SetLastError (ERROR_ACCESS_DENIED);
1436 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: writing up to %d bytes to pipe %p", __func__, numbytes,
1440 ret = write (fd, buffer, numbytes);
1441 } while (ret == -1 && errno == EINTR &&
1442 !mono_thread_info_is_interrupt_state (info));
1445 if (errno == EINTR) {
1448 _wapi_set_last_error_from_errno ();
1450 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s", __func__,
1451 handle, strerror(errno));
1456 if(byteswritten!=NULL) {
1463 static int convert_flags(guint32 fileaccess, guint32 createmode)
1467 switch(fileaccess) {
1474 case GENERIC_READ|GENERIC_WRITE:
1478 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown access type 0x%x", __func__,
1483 switch(createmode) {
1485 flags|=O_CREAT|O_EXCL;
1488 flags|=O_CREAT|O_TRUNC;
1495 case TRUNCATE_EXISTING:
1499 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown create mode 0x%x", __func__,
1508 static mode_t convert_perms(guint32 sharemode)
1512 if(sharemode&FILE_SHARE_READ) {
1515 if(sharemode&FILE_SHARE_WRITE) {
1523 static gboolean share_allows_open (struct stat *statbuf, guint32 sharemode,
1525 struct _WapiFileShare **share_info)
1527 gboolean file_already_shared;
1528 guint32 file_existing_share, file_existing_access;
1530 file_already_shared = _wapi_handle_get_or_set_share (statbuf->st_dev, statbuf->st_ino, sharemode, fileaccess, &file_existing_share, &file_existing_access, share_info);
1532 if (file_already_shared) {
1533 /* The reference to this share info was incremented
1534 * when we looked it up, so be careful to put it back
1535 * if we conclude we can't use this file.
1537 if (file_existing_share == 0) {
1538 /* Quick and easy, no possibility to share */
1539 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing = NONE", __func__, fileaccess);
1541 _wapi_handle_share_release (*share_info);
1546 if (((file_existing_share == FILE_SHARE_READ) &&
1547 (fileaccess != GENERIC_READ)) ||
1548 ((file_existing_share == FILE_SHARE_WRITE) &&
1549 (fileaccess != GENERIC_WRITE))) {
1550 /* New access mode doesn't match up */
1551 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing: 0x%x", __func__, fileaccess, file_existing_share);
1553 _wapi_handle_share_release (*share_info);
1558 if (((file_existing_access & GENERIC_READ) &&
1559 !(sharemode & FILE_SHARE_READ)) ||
1560 ((file_existing_access & GENERIC_WRITE) &&
1561 !(sharemode & FILE_SHARE_WRITE))) {
1562 /* New share mode doesn't match up */
1563 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Access mode prevents open: requested share: 0x%x, file has access: 0x%x", __func__, sharemode, file_existing_access);
1565 _wapi_handle_share_release (*share_info);
1570 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1578 share_allows_delete (struct stat *statbuf, struct _WapiFileShare **share_info)
1580 gboolean file_already_shared;
1581 guint32 file_existing_share, file_existing_access;
1583 file_already_shared = _wapi_handle_get_or_set_share (statbuf->st_dev, statbuf->st_ino, FILE_SHARE_DELETE, GENERIC_READ, &file_existing_share, &file_existing_access, share_info);
1585 if (file_already_shared) {
1586 /* The reference to this share info was incremented
1587 * when we looked it up, so be careful to put it back
1588 * if we conclude we can't use this file.
1590 if (file_existing_share == 0) {
1591 /* Quick and easy, no possibility to share */
1592 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing = NONE", __func__, (*share_info)->access);
1594 _wapi_handle_share_release (*share_info);
1599 if (!(file_existing_share & FILE_SHARE_DELETE)) {
1600 /* New access mode doesn't match up */
1601 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing: 0x%x", __func__, (*share_info)->access, file_existing_share);
1603 _wapi_handle_share_release (*share_info);
1608 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1616 * @name: a pointer to a NULL-terminated unicode string, that names
1617 * the file or other object to create.
1618 * @fileaccess: specifies the file access mode
1619 * @sharemode: whether the file should be shared. This parameter is
1620 * currently ignored.
1621 * @security: Ignored for now.
1622 * @createmode: specifies whether to create a new file, whether to
1623 * overwrite an existing file, whether to truncate the file, etc.
1624 * @attrs: specifies file attributes and flags. On win32 attributes
1625 * are characteristics of the file, not the handle, and are ignored
1626 * when an existing file is opened. Flags give the library hints on
1627 * how to process a file to optimise performance.
1628 * @template: the handle of an open %GENERIC_READ file that specifies
1629 * attributes to apply to a newly created file, ignoring @attrs.
1630 * Normally this parameter is NULL. This parameter is ignored when an
1631 * existing file is opened.
1633 * Creates a new file handle. This only applies to normal files:
1634 * pipes are handled by CreatePipe(), and console handles are created
1635 * with GetStdHandle().
1637 * Return value: the new handle, or %INVALID_HANDLE_VALUE on error.
1639 gpointer CreateFile(const gunichar2 *name, guint32 fileaccess,
1640 guint32 sharemode, WapiSecurityAttributes *security,
1641 guint32 createmode, guint32 attrs,
1642 gpointer template_ G_GNUC_UNUSED)
1644 struct _WapiHandle_file file_handle = {0};
1646 int flags=convert_flags(fileaccess, createmode);
1647 /*mode_t perms=convert_perms(sharemode);*/
1648 /* we don't use sharemode, because that relates to sharing of
1649 * the file when the file is open and is already handled by
1650 * other code, perms instead are the on-disk permissions and
1651 * this is a sane default.
1656 MonoW32HandleType handle_type;
1657 struct stat statbuf;
1659 if (attrs & FILE_ATTRIBUTE_TEMPORARY)
1662 if (attrs & FILE_ATTRIBUTE_ENCRYPTED){
1663 SetLastError (ERROR_ENCRYPTION_FAILED);
1664 return INVALID_HANDLE_VALUE;
1668 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1670 SetLastError (ERROR_INVALID_NAME);
1671 return(INVALID_HANDLE_VALUE);
1674 filename = mono_unicode_to_external (name);
1675 if (filename == NULL) {
1676 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1678 SetLastError (ERROR_INVALID_NAME);
1679 return(INVALID_HANDLE_VALUE);
1682 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Opening %s with share 0x%x and access 0x%x", __func__,
1683 filename, sharemode, fileaccess);
1685 fd = _wapi_open (filename, flags, perms);
1687 /* If we were trying to open a directory with write permissions
1688 * (e.g. O_WRONLY or O_RDWR), this call will fail with
1689 * EISDIR. However, this is a bit bogus because calls to
1690 * manipulate the directory (e.g. SetFileTime) will still work on
1691 * the directory because they use other API calls
1692 * (e.g. utime()). Hence, if we failed with the EISDIR error, try
1693 * to open the directory again without write permission.
1695 if (fd == -1 && errno == EISDIR)
1697 /* Try again but don't try to make it writable */
1698 fd = _wapi_open (filename, flags & ~(O_RDWR|O_WRONLY), perms);
1702 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error opening file %s: %s", __func__, filename,
1704 _wapi_set_last_path_error_from_errno (NULL, filename);
1707 return(INVALID_HANDLE_VALUE);
1710 if (fd >= mono_w32handle_fd_reserve) {
1711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
1713 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1718 return(INVALID_HANDLE_VALUE);
1721 ret = fstat (fd, &statbuf);
1723 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fstat error of file %s: %s", __func__,
1724 filename, strerror (errno));
1725 _wapi_set_last_error_from_errno ();
1729 return(INVALID_HANDLE_VALUE);
1731 #ifdef __native_client__
1732 /* Workaround: Native Client currently returns the same fake inode
1733 * for all files, so do a simple hash on the filename so we don't
1734 * use the same share info for each file.
1736 statbuf.st_ino = g_str_hash(filename);
1739 if (share_allows_open (&statbuf, sharemode, fileaccess,
1740 &file_handle.share_info) == FALSE) {
1741 SetLastError (ERROR_SHARING_VIOLATION);
1745 return (INVALID_HANDLE_VALUE);
1747 if (file_handle.share_info == NULL) {
1748 /* No space, so no more files can be opened */
1749 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: No space in the share table", __func__);
1751 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1755 return(INVALID_HANDLE_VALUE);
1758 file_handle.filename = filename;
1760 if(security!=NULL) {
1761 //file_handle->security_attributes=_wapi_handle_scratch_store (
1762 //security, sizeof(WapiSecurityAttributes));
1765 file_handle.fd = fd;
1766 file_handle.fileaccess=fileaccess;
1767 file_handle.sharemode=sharemode;
1768 file_handle.attrs=attrs;
1770 #ifdef HAVE_POSIX_FADVISE
1771 if (attrs & FILE_FLAG_SEQUENTIAL_SCAN)
1772 posix_fadvise (fd, 0, 0, POSIX_FADV_SEQUENTIAL);
1773 if (attrs & FILE_FLAG_RANDOM_ACCESS)
1774 posix_fadvise (fd, 0, 0, POSIX_FADV_RANDOM);
1778 if (attrs & FILE_FLAG_SEQUENTIAL_SCAN)
1779 fcntl(fd, F_RDAHEAD, 1);
1783 #define S_ISFIFO(m) ((m & S_IFIFO) != 0)
1785 if (S_ISFIFO (statbuf.st_mode)) {
1786 handle_type = MONO_W32HANDLE_PIPE;
1787 /* maintain invariant that pipes have no filename */
1788 file_handle.filename = NULL;
1791 } else if (S_ISCHR (statbuf.st_mode)) {
1792 handle_type = MONO_W32HANDLE_CONSOLE;
1794 handle_type = MONO_W32HANDLE_FILE;
1797 handle = mono_w32handle_new_fd (handle_type, fd, &file_handle);
1798 if (handle == INVALID_HANDLE_VALUE) {
1799 g_warning ("%s: error creating file handle", __func__);
1803 SetLastError (ERROR_GEN_FAILURE);
1804 return(INVALID_HANDLE_VALUE);
1807 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: returning handle %p", __func__, handle);
1814 * @name: a pointer to a NULL-terminated unicode string, that names
1815 * the file to be deleted.
1817 * Deletes file @name.
1819 * Return value: %TRUE on success, %FALSE otherwise.
1821 gboolean DeleteFile(const gunichar2 *name)
1825 gboolean ret = FALSE;
1828 struct stat statbuf;
1829 struct _WapiFileShare *shareinfo;
1833 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1835 SetLastError (ERROR_INVALID_NAME);
1839 filename=mono_unicode_to_external(name);
1840 if(filename==NULL) {
1841 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1843 SetLastError (ERROR_INVALID_NAME);
1847 attrs = GetFileAttributes (name);
1848 if (attrs == INVALID_FILE_ATTRIBUTES) {
1849 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file attributes error", __func__);
1850 /* Error set by GetFileAttributes() */
1856 /* Check to make sure sharing allows us to open the file for
1857 * writing. See bug 323389.
1859 * Do the checks that don't need an open file descriptor, for
1860 * simplicity's sake. If we really have to do the full checks
1861 * then we can implement that later.
1863 if (_wapi_stat (filename, &statbuf) < 0) {
1864 _wapi_set_last_path_error_from_errno (NULL, filename);
1869 if (share_allows_open (&statbuf, 0, GENERIC_WRITE,
1870 &shareinfo) == FALSE) {
1871 SetLastError (ERROR_SHARING_VIOLATION);
1876 _wapi_handle_share_release (shareinfo);
1879 retval = _wapi_unlink (filename);
1882 _wapi_set_last_path_error_from_errno (NULL, filename);
1894 * @name: a pointer to a NULL-terminated unicode string, that names
1895 * the file to be moved.
1896 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
1897 * new name for the file.
1899 * Renames file @name to @dest_name.
1900 * MoveFile sets ERROR_ALREADY_EXISTS if the destination exists, except
1901 * when it is the same file as the source. In that case it silently succeeds.
1903 * Return value: %TRUE on success, %FALSE otherwise.
1905 gboolean MoveFile (const gunichar2 *name, const gunichar2 *dest_name)
1907 gchar *utf8_name, *utf8_dest_name;
1908 int result, errno_copy;
1909 struct stat stat_src, stat_dest;
1910 gboolean ret = FALSE;
1911 struct _WapiFileShare *shareinfo;
1914 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1916 SetLastError (ERROR_INVALID_NAME);
1920 utf8_name = mono_unicode_to_external (name);
1921 if (utf8_name == NULL) {
1922 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1924 SetLastError (ERROR_INVALID_NAME);
1928 if(dest_name==NULL) {
1929 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1932 SetLastError (ERROR_INVALID_NAME);
1936 utf8_dest_name = mono_unicode_to_external (dest_name);
1937 if (utf8_dest_name == NULL) {
1938 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1941 SetLastError (ERROR_INVALID_NAME);
1946 * In C# land we check for the existence of src, but not for dest.
1947 * We check it here and return the failure if dest exists and is not
1948 * the same file as src.
1950 if (_wapi_stat (utf8_name, &stat_src) < 0) {
1951 if (errno != ENOENT || _wapi_lstat (utf8_name, &stat_src) < 0) {
1952 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
1954 g_free (utf8_dest_name);
1959 if (!_wapi_stat (utf8_dest_name, &stat_dest)) {
1960 if (stat_dest.st_dev != stat_src.st_dev ||
1961 stat_dest.st_ino != stat_src.st_ino) {
1963 g_free (utf8_dest_name);
1964 SetLastError (ERROR_ALREADY_EXISTS);
1969 /* Check to make that we have delete sharing permission.
1970 * See https://bugzilla.xamarin.com/show_bug.cgi?id=17009
1972 * Do the checks that don't need an open file descriptor, for
1973 * simplicity's sake. If we really have to do the full checks
1974 * then we can implement that later.
1976 if (share_allows_delete (&stat_src, &shareinfo) == FALSE) {
1977 SetLastError (ERROR_SHARING_VIOLATION);
1981 _wapi_handle_share_release (shareinfo);
1983 result = _wapi_rename (utf8_name, utf8_dest_name);
1987 switch(errno_copy) {
1989 SetLastError (ERROR_ALREADY_EXISTS);
1993 /* Ignore here, it is dealt with below */
1997 /* We already know src exists. Must be dest that doesn't exist. */
1998 _wapi_set_last_path_error_from_errno (NULL, utf8_dest_name);
2002 _wapi_set_last_error_from_errno ();
2007 g_free (utf8_dest_name);
2009 if (result != 0 && errno_copy == EXDEV) {
2010 if (S_ISDIR (stat_src.st_mode)) {
2011 SetLastError (ERROR_NOT_SAME_DEVICE);
2014 /* Try a copy to the new location, and delete the source */
2015 if (CopyFile (name, dest_name, TRUE)==FALSE) {
2016 /* CopyFile will set the error */
2020 return(DeleteFile (name));
2031 write_file (int src_fd, int dest_fd, struct stat *st_src, gboolean report_errors)
2035 int buf_size = st_src->st_blksize;
2036 MonoThreadInfo *info = mono_thread_info_current ();
2038 buf_size = buf_size < 8192 ? 8192 : (buf_size > 65536 ? 65536 : buf_size);
2039 buf = (char *) g_malloc (buf_size);
2042 remain = read (src_fd, buf, buf_size);
2044 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2048 _wapi_set_last_error_from_errno ();
2058 while (remain > 0) {
2059 if ((n = write (dest_fd, wbuf, remain)) < 0) {
2060 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2064 _wapi_set_last_error_from_errno ();
2065 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write failed.", __func__);
2081 * @name: a pointer to a NULL-terminated unicode string, that names
2082 * the file to be copied.
2083 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
2084 * new name for the file.
2085 * @fail_if_exists: if TRUE and dest_name exists, the copy will fail.
2087 * Copies file @name to @dest_name
2089 * Return value: %TRUE on success, %FALSE otherwise.
2091 gboolean CopyFile (const gunichar2 *name, const gunichar2 *dest_name,
2092 gboolean fail_if_exists)
2094 gchar *utf8_src, *utf8_dest;
2095 int src_fd, dest_fd;
2096 struct stat st, dest_st;
2097 struct utimbuf dest_time;
2098 gboolean ret = TRUE;
2102 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
2104 SetLastError (ERROR_INVALID_NAME);
2108 utf8_src = mono_unicode_to_external (name);
2109 if (utf8_src == NULL) {
2110 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of source returned NULL",
2113 SetLastError (ERROR_INVALID_PARAMETER);
2117 if(dest_name==NULL) {
2118 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: dest is NULL", __func__);
2121 SetLastError (ERROR_INVALID_NAME);
2125 utf8_dest = mono_unicode_to_external (dest_name);
2126 if (utf8_dest == NULL) {
2127 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of dest returned NULL",
2130 SetLastError (ERROR_INVALID_PARAMETER);
2137 src_fd = _wapi_open (utf8_src, O_RDONLY, 0);
2139 _wapi_set_last_path_error_from_errno (NULL, utf8_src);
2147 if (fstat (src_fd, &st) < 0) {
2148 _wapi_set_last_error_from_errno ();
2157 /* Before trying to open/create the dest, we need to report a 'file busy'
2158 * error if src and dest are actually the same file. We do the check here to take
2159 * advantage of the IOMAP capability */
2160 if (!_wapi_stat (utf8_dest, &dest_st) && st.st_dev == dest_st.st_dev &&
2161 st.st_ino == dest_st.st_ino) {
2167 SetLastError (ERROR_SHARING_VIOLATION);
2171 if (fail_if_exists) {
2172 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_EXCL, st.st_mode);
2174 /* FIXME: it kinda sucks that this code path potentially scans
2175 * the directory twice due to the weird SetLastError()
2177 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_TRUNC, st.st_mode);
2179 /* The file does not exist, try creating it */
2180 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_TRUNC, st.st_mode);
2182 /* Apparently this error is set if we
2183 * overwrite the dest file
2185 SetLastError (ERROR_ALREADY_EXISTS);
2189 _wapi_set_last_error_from_errno ();
2198 if (!write_file (src_fd, dest_fd, &st, TRUE))
2204 dest_time.modtime = st.st_mtime;
2205 dest_time.actime = st.st_atime;
2206 ret_utime = utime (utf8_dest, &dest_time);
2207 if (ret_utime == -1)
2208 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file [%s] utime failed: %s", __func__, utf8_dest, strerror(errno));
2217 convert_arg_to_utf8 (const gunichar2 *arg, const gchar *arg_name)
2222 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: %s is NULL", __func__, arg_name);
2223 SetLastError (ERROR_INVALID_NAME);
2227 utf8_ret = mono_unicode_to_external (arg);
2228 if (utf8_ret == NULL) {
2229 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of %s returned NULL",
2230 __func__, arg_name);
2231 SetLastError (ERROR_INVALID_PARAMETER);
2239 ReplaceFile (const gunichar2 *replacedFileName, const gunichar2 *replacementFileName,
2240 const gunichar2 *backupFileName, guint32 replaceFlags,
2241 gpointer exclude, gpointer reserved)
2243 int result, backup_fd = -1,replaced_fd = -1;
2244 gchar *utf8_replacedFileName, *utf8_replacementFileName = NULL, *utf8_backupFileName = NULL;
2245 struct stat stBackup;
2246 gboolean ret = FALSE;
2248 if (!(utf8_replacedFileName = convert_arg_to_utf8 (replacedFileName, "replacedFileName")))
2250 if (!(utf8_replacementFileName = convert_arg_to_utf8 (replacementFileName, "replacementFileName")))
2251 goto replace_cleanup;
2252 if (backupFileName != NULL) {
2253 if (!(utf8_backupFileName = convert_arg_to_utf8 (backupFileName, "backupFileName")))
2254 goto replace_cleanup;
2257 if (utf8_backupFileName) {
2258 // Open the backup file for read so we can restore the file if an error occurs.
2259 backup_fd = _wapi_open (utf8_backupFileName, O_RDONLY, 0);
2260 result = _wapi_rename (utf8_replacedFileName, utf8_backupFileName);
2262 goto replace_cleanup;
2265 result = _wapi_rename (utf8_replacementFileName, utf8_replacedFileName);
2267 _wapi_set_last_path_error_from_errno (NULL, utf8_replacementFileName);
2268 _wapi_rename (utf8_backupFileName, utf8_replacedFileName);
2269 if (backup_fd != -1 && !fstat (backup_fd, &stBackup)) {
2270 replaced_fd = _wapi_open (utf8_backupFileName, O_WRONLY | O_CREAT | O_TRUNC,
2273 if (replaced_fd == -1)
2274 goto replace_cleanup;
2276 write_file (backup_fd, replaced_fd, &stBackup, FALSE);
2279 goto replace_cleanup;
2285 g_free (utf8_replacedFileName);
2286 g_free (utf8_replacementFileName);
2287 g_free (utf8_backupFileName);
2288 if (backup_fd != -1)
2290 if (replaced_fd != -1)
2291 close (replaced_fd);
2297 * @stdhandle: specifies the file descriptor
2299 * Returns a handle for stdin, stdout, or stderr. Always returns the
2300 * same handle for the same @stdhandle.
2302 * Return value: the handle, or %INVALID_HANDLE_VALUE on error
2305 static mono_mutex_t stdhandle_mutex;
2307 gpointer GetStdHandle(WapiStdHandle stdhandle)
2309 struct _WapiHandle_file *file_handle;
2316 case STD_INPUT_HANDLE:
2321 case STD_OUTPUT_HANDLE:
2326 case STD_ERROR_HANDLE:
2332 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unknown standard handle type", __func__);
2334 SetLastError (ERROR_INVALID_PARAMETER);
2335 return(INVALID_HANDLE_VALUE);
2338 handle = GINT_TO_POINTER (fd);
2340 mono_os_mutex_lock (&stdhandle_mutex);
2342 ok = mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
2343 (gpointer *)&file_handle);
2345 /* Need to create this console handle */
2346 handle = _wapi_stdhandle_create (fd, name);
2348 if (handle == INVALID_HANDLE_VALUE) {
2349 SetLastError (ERROR_NO_MORE_FILES);
2353 /* Add a reference to this handle */
2354 mono_w32handle_ref (handle);
2358 mono_os_mutex_unlock (&stdhandle_mutex);
2365 * @handle: The file handle to read from. The handle must have
2366 * %GENERIC_READ access.
2367 * @buffer: The buffer to store read data in
2368 * @numbytes: The maximum number of bytes to read
2369 * @bytesread: The actual number of bytes read is stored here. This
2370 * value can be zero if the handle is positioned at the end of the
2372 * @overlapped: points to a required %WapiOverlapped structure if
2373 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2376 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2377 * function reads up to @numbytes bytes from the file from the current
2378 * file position, and stores them in @buffer. If there are not enough
2379 * bytes left in the file, just the amount available will be read.
2380 * The actual number of bytes read is stored in @bytesread.
2382 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2383 * file position is ignored and the read position is taken from data
2384 * in the @overlapped structure.
2386 * Return value: %TRUE if the read succeeds (even if no bytes were
2387 * read due to an attempt to read past the end of the file), %FALSE on
2390 gboolean ReadFile(gpointer handle, gpointer buffer, guint32 numbytes,
2391 guint32 *bytesread, WapiOverlapped *overlapped)
2393 MonoW32HandleType type;
2395 type = mono_w32handle_get_type (handle);
2397 if(io_ops[type].readfile==NULL) {
2398 SetLastError (ERROR_INVALID_HANDLE);
2402 return(io_ops[type].readfile (handle, buffer, numbytes, bytesread,
2408 * @handle: The file handle to write to. The handle must have
2409 * %GENERIC_WRITE access.
2410 * @buffer: The buffer to read data from.
2411 * @numbytes: The maximum number of bytes to write.
2412 * @byteswritten: The actual number of bytes written is stored here.
2413 * If the handle is positioned at the file end, the length of the file
2414 * is extended. This parameter may be %NULL.
2415 * @overlapped: points to a required %WapiOverlapped structure if
2416 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2419 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2420 * function writes up to @numbytes bytes from @buffer to the file at
2421 * the current file position. If @handle is positioned at the end of
2422 * the file, the file is extended. The actual number of bytes written
2423 * is stored in @byteswritten.
2425 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2426 * file position is ignored and the write position is taken from data
2427 * in the @overlapped structure.
2429 * Return value: %TRUE if the write succeeds, %FALSE on error.
2431 gboolean WriteFile(gpointer handle, gconstpointer buffer, guint32 numbytes,
2432 guint32 *byteswritten, WapiOverlapped *overlapped)
2434 MonoW32HandleType type;
2436 type = mono_w32handle_get_type (handle);
2438 if(io_ops[type].writefile==NULL) {
2439 SetLastError (ERROR_INVALID_HANDLE);
2443 return(io_ops[type].writefile (handle, buffer, numbytes, byteswritten,
2449 * @handle: Handle to open file. The handle must have
2450 * %GENERIC_WRITE access.
2452 * Flushes buffers of the file and causes all unwritten data to
2455 * Return value: %TRUE on success, %FALSE otherwise.
2457 gboolean FlushFileBuffers(gpointer handle)
2459 MonoW32HandleType type;
2461 type = mono_w32handle_get_type (handle);
2463 if(io_ops[type].flushfile==NULL) {
2464 SetLastError (ERROR_INVALID_HANDLE);
2468 return(io_ops[type].flushfile (handle));
2473 * @handle: The file handle to set. The handle must have
2474 * %GENERIC_WRITE access.
2476 * Moves the end-of-file position to the current position of the file
2477 * pointer. This function is used to truncate or extend a file.
2479 * Return value: %TRUE on success, %FALSE otherwise.
2481 gboolean SetEndOfFile(gpointer handle)
2483 MonoW32HandleType type;
2485 type = mono_w32handle_get_type (handle);
2487 if (io_ops[type].setendoffile == NULL) {
2488 SetLastError (ERROR_INVALID_HANDLE);
2492 return(io_ops[type].setendoffile (handle));
2497 * @handle: The file handle to set. The handle must have
2498 * %GENERIC_READ or %GENERIC_WRITE access.
2499 * @movedistance: Low 32 bits of a signed value that specifies the
2500 * number of bytes to move the file pointer.
2501 * @highmovedistance: Pointer to the high 32 bits of a signed value
2502 * that specifies the number of bytes to move the file pointer, or
2504 * @method: The starting point for the file pointer move.
2506 * Sets the file pointer of an open file.
2508 * The distance to move the file pointer is calculated from
2509 * @movedistance and @highmovedistance: If @highmovedistance is %NULL,
2510 * @movedistance is the 32-bit signed value; otherwise, @movedistance
2511 * is the low 32 bits and @highmovedistance a pointer to the high 32
2512 * bits of a 64 bit signed value. A positive distance moves the file
2513 * pointer forward from the position specified by @method; a negative
2514 * distance moves the file pointer backward.
2516 * If the library is compiled without large file support,
2517 * @highmovedistance is ignored and its value is set to zero on a
2518 * successful return.
2520 * Return value: On success, the low 32 bits of the new file pointer.
2521 * If @highmovedistance is not %NULL, the high 32 bits of the new file
2522 * pointer are stored there. On failure, %INVALID_SET_FILE_POINTER.
2524 guint32 SetFilePointer(gpointer handle, gint32 movedistance,
2525 gint32 *highmovedistance, WapiSeekMethod method)
2527 MonoW32HandleType type;
2529 type = mono_w32handle_get_type (handle);
2531 if (io_ops[type].seek == NULL) {
2532 SetLastError (ERROR_INVALID_HANDLE);
2533 return(INVALID_SET_FILE_POINTER);
2536 return(io_ops[type].seek (handle, movedistance, highmovedistance,
2542 * @handle: The file handle to test.
2544 * Finds the type of file @handle.
2546 * Return value: %FILE_TYPE_UNKNOWN - the type of the file @handle is
2547 * unknown. %FILE_TYPE_DISK - @handle is a disk file.
2548 * %FILE_TYPE_CHAR - @handle is a character device, such as a console.
2549 * %FILE_TYPE_PIPE - @handle is a named or anonymous pipe.
2551 WapiFileType GetFileType(gpointer handle)
2553 MonoW32HandleType type;
2555 type = mono_w32handle_get_type (handle);
2557 if (io_ops[type].getfiletype == NULL) {
2558 SetLastError (ERROR_INVALID_HANDLE);
2559 return(FILE_TYPE_UNKNOWN);
2562 return(io_ops[type].getfiletype ());
2567 * @handle: The file handle to query. The handle must have
2568 * %GENERIC_READ or %GENERIC_WRITE access.
2569 * @highsize: If non-%NULL, the high 32 bits of the file size are
2572 * Retrieves the size of the file @handle.
2574 * If the library is compiled without large file support, @highsize
2575 * has its value set to zero on a successful return.
2577 * Return value: On success, the low 32 bits of the file size. If
2578 * @highsize is non-%NULL then the high 32 bits of the file size are
2579 * stored here. On failure %INVALID_FILE_SIZE is returned.
2581 guint32 GetFileSize(gpointer handle, guint32 *highsize)
2583 MonoW32HandleType type;
2585 type = mono_w32handle_get_type (handle);
2587 if (io_ops[type].getfilesize == NULL) {
2588 SetLastError (ERROR_INVALID_HANDLE);
2589 return(INVALID_FILE_SIZE);
2592 return(io_ops[type].getfilesize (handle, highsize));
2597 * @handle: The file handle to query. The handle must have
2598 * %GENERIC_READ access.
2599 * @create_time: Points to a %WapiFileTime structure to receive the
2600 * number of ticks since the epoch that file was created. May be
2602 * @last_access: Points to a %WapiFileTime structure to receive the
2603 * number of ticks since the epoch when file was last accessed. May be
2605 * @last_write: Points to a %WapiFileTime structure to receive the
2606 * number of ticks since the epoch when file was last written to. May
2609 * Finds the number of ticks since the epoch that the file referenced
2610 * by @handle was created, last accessed and last modified. A tick is
2611 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2614 * Create time isn't recorded on POSIX file systems or reported by
2615 * stat(2), so that time is guessed by returning the oldest of the
2618 * Return value: %TRUE on success, %FALSE otherwise.
2620 gboolean GetFileTime(gpointer handle, WapiFileTime *create_time,
2621 WapiFileTime *last_access, WapiFileTime *last_write)
2623 MonoW32HandleType type;
2625 type = mono_w32handle_get_type (handle);
2627 if (io_ops[type].getfiletime == NULL) {
2628 SetLastError (ERROR_INVALID_HANDLE);
2632 return(io_ops[type].getfiletime (handle, create_time, last_access,
2638 * @handle: The file handle to set. The handle must have
2639 * %GENERIC_WRITE access.
2640 * @create_time: Points to a %WapiFileTime structure that contains the
2641 * number of ticks since the epoch that the file was created. May be
2643 * @last_access: Points to a %WapiFileTime structure that contains the
2644 * number of ticks since the epoch when the file was last accessed.
2646 * @last_write: Points to a %WapiFileTime structure that contains the
2647 * number of ticks since the epoch when the file was last written to.
2650 * Sets the number of ticks since the epoch that the file referenced
2651 * by @handle was created, last accessed or last modified. A tick is
2652 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2655 * Create time isn't recorded on POSIX file systems, and is ignored.
2657 * Return value: %TRUE on success, %FALSE otherwise.
2659 gboolean SetFileTime(gpointer handle, const WapiFileTime *create_time,
2660 const WapiFileTime *last_access,
2661 const WapiFileTime *last_write)
2663 MonoW32HandleType type;
2665 type = mono_w32handle_get_type (handle);
2667 if (io_ops[type].setfiletime == NULL) {
2668 SetLastError (ERROR_INVALID_HANDLE);
2672 return(io_ops[type].setfiletime (handle, create_time, last_access,
2676 /* A tick is a 100-nanosecond interval. File time epoch is Midnight,
2677 * January 1 1601 GMT
2680 #define TICKS_PER_MILLISECOND 10000L
2681 #define TICKS_PER_SECOND 10000000L
2682 #define TICKS_PER_MINUTE 600000000L
2683 #define TICKS_PER_HOUR 36000000000LL
2684 #define TICKS_PER_DAY 864000000000LL
2686 #define isleap(y) ((y) % 4 == 0 && ((y) % 100 != 0 || (y) % 400 == 0))
2688 static const guint16 mon_yday[2][13]={
2689 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
2690 {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
2694 * FileTimeToSystemTime:
2695 * @file_time: Points to a %WapiFileTime structure that contains the
2696 * number of ticks to convert.
2697 * @system_time: Points to a %WapiSystemTime structure to receive the
2700 * Converts a tick count into broken-out time values.
2702 * Return value: %TRUE on success, %FALSE otherwise.
2704 gboolean FileTimeToSystemTime(const WapiFileTime *file_time,
2705 WapiSystemTime *system_time)
2707 gint64 file_ticks, totaldays, rem, y;
2710 if(system_time==NULL) {
2711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: system_time NULL", __func__);
2713 SetLastError (ERROR_INVALID_PARAMETER);
2717 file_ticks=((gint64)file_time->dwHighDateTime << 32) +
2718 file_time->dwLowDateTime;
2720 /* Really compares if file_ticks>=0x8000000000000000
2721 * (LLONG_MAX+1) but we're working with a signed value for the
2722 * year and day calculation to work later
2725 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file_time too big", __func__);
2727 SetLastError (ERROR_INVALID_PARAMETER);
2731 totaldays=(file_ticks / TICKS_PER_DAY);
2732 rem = file_ticks % TICKS_PER_DAY;
2733 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld rem: %lld", __func__, totaldays, rem);
2735 system_time->wHour=rem/TICKS_PER_HOUR;
2736 rem %= TICKS_PER_HOUR;
2737 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Hour: %d rem: %lld", __func__, system_time->wHour, rem);
2739 system_time->wMinute = rem / TICKS_PER_MINUTE;
2740 rem %= TICKS_PER_MINUTE;
2741 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Minute: %d rem: %lld", __func__, system_time->wMinute,
2744 system_time->wSecond = rem / TICKS_PER_SECOND;
2745 rem %= TICKS_PER_SECOND;
2746 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Second: %d rem: %lld", __func__, system_time->wSecond,
2749 system_time->wMilliseconds = rem / TICKS_PER_MILLISECOND;
2750 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Milliseconds: %d", __func__,
2751 system_time->wMilliseconds);
2753 /* January 1, 1601 was a Monday, according to Emacs calendar */
2754 system_time->wDayOfWeek = ((1 + totaldays) % 7) + 1;
2755 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day of week: %d", __func__, system_time->wDayOfWeek);
2757 /* This algorithm to find year and month given days from epoch
2762 #define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
2763 #define LEAPS_THRU_END_OF(y) (DIV(y, 4) - DIV (y, 100) + DIV (y, 400))
2765 while(totaldays < 0 || totaldays >= (isleap(y)?366:365)) {
2766 /* Guess a corrected year, assuming 365 days per year */
2767 gint64 yg = y + totaldays / 365 - (totaldays % 365 < 0);
2768 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld yg: %lld y: %lld", __func__,
2771 g_message("%s: LEAPS(yg): %lld LEAPS(y): %lld", __func__,
2772 LEAPS_THRU_END_OF(yg-1), LEAPS_THRU_END_OF(y-1));
2774 /* Adjust days and y to match the guessed year. */
2775 totaldays -= ((yg - y) * 365
2776 + LEAPS_THRU_END_OF (yg - 1)
2777 - LEAPS_THRU_END_OF (y - 1));
2778 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2780 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: y: %lld", __func__, y);
2783 system_time->wYear = y;
2784 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Year: %d", __func__, system_time->wYear);
2786 ip = mon_yday[isleap(y)];
2788 for(y=11; totaldays < ip[y]; --y) {
2792 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2794 system_time->wMonth = y + 1;
2795 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Month: %d", __func__, system_time->wMonth);
2797 system_time->wDay = totaldays + 1;
2798 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day: %d", __func__, system_time->wDay);
2803 gpointer FindFirstFile (const gunichar2 *pattern, WapiFindData *find_data)
2805 struct _WapiHandle_find find_handle = {0};
2807 gchar *utf8_pattern = NULL, *dir_part, *entry_part;
2810 if (pattern == NULL) {
2811 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: pattern is NULL", __func__);
2813 SetLastError (ERROR_PATH_NOT_FOUND);
2814 return(INVALID_HANDLE_VALUE);
2817 utf8_pattern = mono_unicode_to_external (pattern);
2818 if (utf8_pattern == NULL) {
2819 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
2821 SetLastError (ERROR_INVALID_NAME);
2822 return(INVALID_HANDLE_VALUE);
2825 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: looking for [%s]", __func__, utf8_pattern);
2827 /* Figure out which bit of the pattern is the directory */
2828 dir_part = _wapi_dirname (utf8_pattern);
2829 entry_part = _wapi_basename (utf8_pattern);
2832 /* Don't do this check for now, it breaks if directories
2833 * really do have metachars in their names (see bug 58116).
2834 * FIXME: Figure out a better solution to keep some checks...
2836 if (strchr (dir_part, '*') || strchr (dir_part, '?')) {
2837 SetLastError (ERROR_INVALID_NAME);
2839 g_free (entry_part);
2840 g_free (utf8_pattern);
2841 return(INVALID_HANDLE_VALUE);
2845 /* The pattern can specify a directory or a set of files.
2847 * The pattern can have wildcard characters ? and *, but only
2848 * in the section after the last directory delimiter. (Return
2849 * ERROR_INVALID_NAME if there are wildcards in earlier path
2850 * sections.) "*" has the usual 0-or-more chars meaning. "?"
2851 * means "match one character", "??" seems to mean "match one
2852 * or two characters", "???" seems to mean "match one, two or
2853 * three characters", etc. Windows will also try and match
2854 * the mangled "short name" of files, so 8 character patterns
2855 * with wildcards will show some surprising results.
2857 * All the written documentation I can find says that '?'
2858 * should only match one character, and doesn't mention '??',
2859 * '???' etc. I'm going to assume that the strict behaviour
2860 * (ie '???' means three and only three characters) is the
2861 * correct one, because that lets me use fnmatch(3) rather
2862 * than mess around with regexes.
2865 find_handle.namelist = NULL;
2866 result = _wapi_io_scandir (dir_part, entry_part,
2867 &find_handle.namelist);
2870 /* No files, which windows seems to call
2873 SetLastError (ERROR_FILE_NOT_FOUND);
2874 g_free (utf8_pattern);
2875 g_free (entry_part);
2877 return (INVALID_HANDLE_VALUE);
2881 _wapi_set_last_path_error_from_errno (dir_part, NULL);
2882 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: scandir error: %s", __func__, g_strerror (errno));
2883 g_free (utf8_pattern);
2884 g_free (entry_part);
2886 return (INVALID_HANDLE_VALUE);
2889 g_free (utf8_pattern);
2890 g_free (entry_part);
2892 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Got %d matches", __func__, result);
2894 find_handle.dir_part = dir_part;
2895 find_handle.num = result;
2896 find_handle.count = 0;
2898 handle = mono_w32handle_new (MONO_W32HANDLE_FIND, &find_handle);
2899 if (handle == INVALID_HANDLE_VALUE) {
2900 g_warning ("%s: error creating find handle", __func__);
2902 g_free (entry_part);
2903 g_free (utf8_pattern);
2904 SetLastError (ERROR_GEN_FAILURE);
2906 return(INVALID_HANDLE_VALUE);
2909 if (handle != INVALID_HANDLE_VALUE &&
2910 !FindNextFile (handle, find_data)) {
2912 SetLastError (ERROR_NO_MORE_FILES);
2913 handle = INVALID_HANDLE_VALUE;
2919 gboolean FindNextFile (gpointer handle, WapiFindData *find_data)
2921 struct _WapiHandle_find *find_handle;
2923 struct stat buf, linkbuf;
2926 gchar *utf8_filename, *utf8_basename;
2927 gunichar2 *utf16_basename;
2930 gboolean ret = FALSE;
2932 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
2933 (gpointer *)&find_handle);
2935 g_warning ("%s: error looking up find handle %p", __func__,
2937 SetLastError (ERROR_INVALID_HANDLE);
2941 mono_w32handle_lock_handle (handle);
2944 if (find_handle->count >= find_handle->num) {
2945 SetLastError (ERROR_NO_MORE_FILES);
2949 /* stat next match */
2951 filename = g_build_filename (find_handle->dir_part, find_handle->namelist[find_handle->count ++], NULL);
2953 result = _wapi_stat (filename, &buf);
2954 if (result == -1 && errno == ENOENT) {
2955 /* Might be a dangling symlink */
2956 result = _wapi_lstat (filename, &buf);
2960 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: stat failed: %s", __func__, filename);
2966 #ifndef __native_client__
2967 result = _wapi_lstat (filename, &linkbuf);
2969 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lstat failed: %s", __func__, filename);
2976 utf8_filename = mono_utf8_from_external (filename);
2977 if (utf8_filename == NULL) {
2978 /* We couldn't turn this filename into utf8 (eg the
2979 * encoding of the name wasn't convertible), so just
2982 g_warning ("%s: Bad encoding for '%s'\nConsider using MONO_EXTERNAL_ENCODINGS\n", __func__, filename);
2989 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Found [%s]", __func__, utf8_filename);
2991 /* fill data block */
2993 if (buf.st_mtime < buf.st_ctime)
2994 create_time = buf.st_mtime;
2996 create_time = buf.st_ctime;
2998 #ifdef __native_client__
2999 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, NULL);
3001 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, &linkbuf);
3004 time_t_to_filetime (create_time, &find_data->ftCreationTime);
3005 time_t_to_filetime (buf.st_atime, &find_data->ftLastAccessTime);
3006 time_t_to_filetime (buf.st_mtime, &find_data->ftLastWriteTime);
3008 if (find_data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
3009 find_data->nFileSizeHigh = 0;
3010 find_data->nFileSizeLow = 0;
3012 find_data->nFileSizeHigh = buf.st_size >> 32;
3013 find_data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3016 find_data->dwReserved0 = 0;
3017 find_data->dwReserved1 = 0;
3019 utf8_basename = _wapi_basename (utf8_filename);
3020 utf16_basename = g_utf8_to_utf16 (utf8_basename, -1, NULL, &bytes,
3022 if(utf16_basename==NULL) {
3023 g_free (utf8_basename);
3024 g_free (utf8_filename);
3029 /* utf16 is 2 * utf8 */
3032 memset (find_data->cFileName, '\0', (MAX_PATH*2));
3034 /* Truncating a utf16 string like this might leave the last
3037 memcpy (find_data->cFileName, utf16_basename,
3038 bytes<(MAX_PATH*2)-2?bytes:(MAX_PATH*2)-2);
3040 find_data->cAlternateFileName [0] = 0; /* not used */
3042 g_free (utf8_basename);
3043 g_free (utf8_filename);
3044 g_free (utf16_basename);
3047 mono_w32handle_unlock_handle (handle);
3054 * @wapi_handle: the find handle to close.
3056 * Closes find handle @wapi_handle
3058 * Return value: %TRUE on success, %FALSE otherwise.
3060 gboolean FindClose (gpointer handle)
3062 struct _WapiHandle_find *find_handle;
3065 if (handle == NULL) {
3066 SetLastError (ERROR_INVALID_HANDLE);
3070 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
3071 (gpointer *)&find_handle);
3073 g_warning ("%s: error looking up find handle %p", __func__,
3075 SetLastError (ERROR_INVALID_HANDLE);
3079 mono_w32handle_lock_handle (handle);
3081 g_strfreev (find_handle->namelist);
3082 g_free (find_handle->dir_part);
3084 mono_w32handle_unlock_handle (handle);
3086 mono_w32handle_unref (handle);
3093 * @name: a pointer to a NULL-terminated unicode string, that names
3094 * the directory to be created.
3095 * @security: ignored for now
3097 * Creates directory @name
3099 * Return value: %TRUE on success, %FALSE otherwise.
3101 gboolean CreateDirectory (const gunichar2 *name,
3102 WapiSecurityAttributes *security)
3108 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3110 SetLastError (ERROR_INVALID_NAME);
3114 utf8_name = mono_unicode_to_external (name);
3115 if (utf8_name == NULL) {
3116 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3118 SetLastError (ERROR_INVALID_NAME);
3122 result = _wapi_mkdir (utf8_name, 0777);
3129 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3136 * @name: a pointer to a NULL-terminated unicode string, that names
3137 * the directory to be removed.
3139 * Removes directory @name
3141 * Return value: %TRUE on success, %FALSE otherwise.
3143 gboolean RemoveDirectory (const gunichar2 *name)
3149 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3151 SetLastError (ERROR_INVALID_NAME);
3155 utf8_name = mono_unicode_to_external (name);
3156 if (utf8_name == NULL) {
3157 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3159 SetLastError (ERROR_INVALID_NAME);
3163 result = _wapi_rmdir (utf8_name);
3165 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3176 * GetFileAttributes:
3177 * @name: a pointer to a NULL-terminated unicode filename.
3179 * Gets the attributes for @name;
3181 * Return value: %INVALID_FILE_ATTRIBUTES on failure
3183 guint32 GetFileAttributes (const gunichar2 *name)
3186 struct stat buf, linkbuf;
3191 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3193 SetLastError (ERROR_INVALID_NAME);
3197 utf8_name = mono_unicode_to_external (name);
3198 if (utf8_name == NULL) {
3199 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3201 SetLastError (ERROR_INVALID_PARAMETER);
3202 return (INVALID_FILE_ATTRIBUTES);
3205 result = _wapi_stat (utf8_name, &buf);
3206 if (result == -1 && errno == ENOENT) {
3207 /* Might be a dangling symlink... */
3208 result = _wapi_lstat (utf8_name, &buf);
3212 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3214 return (INVALID_FILE_ATTRIBUTES);
3217 #ifndef __native_client__
3218 result = _wapi_lstat (utf8_name, &linkbuf);
3220 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3222 return (INVALID_FILE_ATTRIBUTES);
3226 #ifdef __native_client__
3227 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, NULL);
3229 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, &linkbuf);
3238 * GetFileAttributesEx:
3239 * @name: a pointer to a NULL-terminated unicode filename.
3240 * @level: must be GetFileExInfoStandard
3241 * @info: pointer to a WapiFileAttributesData structure
3243 * Gets attributes, size and filetimes for @name;
3245 * Return value: %TRUE on success, %FALSE on failure
3247 gboolean GetFileAttributesEx (const gunichar2 *name, WapiGetFileExInfoLevels level, gpointer info)
3250 WapiFileAttributesData *data;
3252 struct stat buf, linkbuf;
3256 if (level != GetFileExInfoStandard) {
3257 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: info level %d not supported.", __func__,
3260 SetLastError (ERROR_INVALID_PARAMETER);
3265 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3267 SetLastError (ERROR_INVALID_NAME);
3271 utf8_name = mono_unicode_to_external (name);
3272 if (utf8_name == NULL) {
3273 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3275 SetLastError (ERROR_INVALID_PARAMETER);
3279 result = _wapi_stat (utf8_name, &buf);
3280 if (result == -1 && errno == ENOENT) {
3281 /* Might be a dangling symlink... */
3282 result = _wapi_lstat (utf8_name, &buf);
3286 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3291 result = _wapi_lstat (utf8_name, &linkbuf);
3293 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3298 /* fill data block */
3300 data = (WapiFileAttributesData *)info;
3302 if (buf.st_mtime < buf.st_ctime)
3303 create_time = buf.st_mtime;
3305 create_time = buf.st_ctime;
3307 data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_name,
3313 time_t_to_filetime (create_time, &data->ftCreationTime);
3314 time_t_to_filetime (buf.st_atime, &data->ftLastAccessTime);
3315 time_t_to_filetime (buf.st_mtime, &data->ftLastWriteTime);
3317 if (data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
3318 data->nFileSizeHigh = 0;
3319 data->nFileSizeLow = 0;
3322 data->nFileSizeHigh = buf.st_size >> 32;
3323 data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3331 * @name: name of file
3332 * @attrs: attributes to set
3334 * Changes the attributes on a named file.
3336 * Return value: %TRUE on success, %FALSE on failure.
3338 extern gboolean SetFileAttributes (const gunichar2 *name, guint32 attrs)
3340 /* FIXME: think of something clever to do on unix */
3346 * Currently we only handle one *internal* case, with a value that is
3347 * not standard: 0x80000000, which means `set executable bit'
3351 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3353 SetLastError (ERROR_INVALID_NAME);
3357 utf8_name = mono_unicode_to_external (name);
3358 if (utf8_name == NULL) {
3359 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3361 SetLastError (ERROR_INVALID_NAME);
3365 result = _wapi_stat (utf8_name, &buf);
3366 if (result == -1 && errno == ENOENT) {
3367 /* Might be a dangling symlink... */
3368 result = _wapi_lstat (utf8_name, &buf);
3372 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3377 /* Contrary to the documentation, ms allows NORMAL to be
3378 * specified along with other attributes, so dont bother to
3379 * catch that case here.
3381 if (attrs & FILE_ATTRIBUTE_READONLY) {
3382 result = _wapi_chmod (utf8_name, buf.st_mode & ~(S_IWUSR | S_IWOTH | S_IWGRP));
3384 result = _wapi_chmod (utf8_name, buf.st_mode | S_IWUSR);
3387 /* Ignore the other attributes for now */
3389 if (attrs & 0x80000000){
3390 mode_t exec_mask = 0;
3392 if ((buf.st_mode & S_IRUSR) != 0)
3393 exec_mask |= S_IXUSR;
3395 if ((buf.st_mode & S_IRGRP) != 0)
3396 exec_mask |= S_IXGRP;
3398 if ((buf.st_mode & S_IROTH) != 0)
3399 exec_mask |= S_IXOTH;
3401 result = chmod (utf8_name, buf.st_mode | exec_mask);
3403 /* Don't bother to reset executable (might need to change this
3413 * GetCurrentDirectory
3414 * @length: size of the buffer
3415 * @buffer: pointer to buffer that recieves path
3417 * Retrieves the current directory for the current process.
3419 * Return value: number of characters in buffer on success, zero on failure
3421 extern guint32 GetCurrentDirectory (guint32 length, gunichar2 *buffer)
3423 gunichar2 *utf16_path;
3427 #ifdef __native_client__
3428 gchar *path = g_get_current_dir ();
3429 if (length < strlen(path) + 1 || path == NULL)
3431 memcpy (buffer, path, strlen(path) + 1);
3433 if (getcwd ((char*)buffer, length) == NULL) {
3434 if (errno == ERANGE) { /*buffer length is not big enough */
3435 gchar *path = g_get_current_dir (); /*FIXME g_get_current_dir doesn't work with broken paths and calling it just to know the path length is silly*/
3438 utf16_path = mono_unicode_from_external (path, &bytes);
3439 g_free (utf16_path);
3443 _wapi_set_last_error_from_errno ();
3448 utf16_path = mono_unicode_from_external ((gchar*)buffer, &bytes);
3449 count = (bytes/2)+1;
3450 g_assert (count <= length); /*getcwd must have failed before with ERANGE*/
3452 /* Add the terminator */
3453 memset (buffer, '\0', bytes+2);
3454 memcpy (buffer, utf16_path, bytes);
3456 g_free (utf16_path);
3462 * SetCurrentDirectory
3463 * @path: path to new directory
3465 * Changes the directory path for the current process.
3467 * Return value: %TRUE on success, %FALSE on failure.
3469 extern gboolean SetCurrentDirectory (const gunichar2 *path)
3475 SetLastError (ERROR_INVALID_PARAMETER);
3479 utf8_path = mono_unicode_to_external (path);
3480 if (_wapi_chdir (utf8_path) != 0) {
3481 _wapi_set_last_error_from_errno ();
3491 gboolean CreatePipe (gpointer *readpipe, gpointer *writepipe,
3492 WapiSecurityAttributes *security G_GNUC_UNUSED, guint32 size)
3494 struct _WapiHandle_file pipe_read_handle = {0};
3495 struct _WapiHandle_file pipe_write_handle = {0};
3496 gpointer read_handle;
3497 gpointer write_handle;
3501 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Creating pipe", __func__);
3505 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error creating pipe: %s", __func__,
3508 _wapi_set_last_error_from_errno ();
3512 if (filedes[0] >= mono_w32handle_fd_reserve ||
3513 filedes[1] >= mono_w32handle_fd_reserve) {
3514 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
3516 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
3524 /* filedes[0] is open for reading, filedes[1] for writing */
3526 pipe_read_handle.fd = filedes [0];
3527 pipe_read_handle.fileaccess = GENERIC_READ;
3528 read_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[0],
3530 if (read_handle == INVALID_HANDLE_VALUE) {
3531 g_warning ("%s: error creating pipe read handle", __func__);
3534 SetLastError (ERROR_GEN_FAILURE);
3539 pipe_write_handle.fd = filedes [1];
3540 pipe_write_handle.fileaccess = GENERIC_WRITE;
3541 write_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[1],
3542 &pipe_write_handle);
3543 if (write_handle == INVALID_HANDLE_VALUE) {
3544 g_warning ("%s: error creating pipe write handle", __func__);
3545 mono_w32handle_unref (read_handle);
3549 SetLastError (ERROR_GEN_FAILURE);
3554 *readpipe = read_handle;
3555 *writepipe = write_handle;
3557 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning pipe: read handle %p, write handle %p",
3558 __func__, read_handle, write_handle);
3563 #ifdef HAVE_GETFSSTAT
3564 /* Darwin has getfsstat */
3565 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3567 struct statfs *stats;
3570 glong length, total = 0;
3572 n = getfsstat (NULL, 0, MNT_NOWAIT);
3575 size = n * sizeof (struct statfs);
3576 stats = (struct statfs *) g_malloc (size);
3579 if (getfsstat (stats, size, MNT_NOWAIT) == -1){
3583 for (i = 0; i < n; i++){
3584 dir = g_utf8_to_utf16 (stats [i].f_mntonname, -1, NULL, &length, NULL);
3585 if (total + length < len){
3586 memcpy (buf + total, dir, sizeof (gunichar2) * length);
3587 buf [total+length] = 0;
3590 total += length + 1;
3599 /* In-place octal sequence replacement */
3601 unescape_octal (gchar *str)
3610 while (*rptr != '\0') {
3611 if (*rptr == '\\') {
3614 c = (*(rptr++) - '0') << 6;
3615 c += (*(rptr++) - '0') << 3;
3616 c += *(rptr++) - '0';
3618 } else if (wptr != rptr) {
3626 static gint32 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf);
3629 #define GET_LOGICAL_DRIVE_STRINGS_BUFFER 512
3630 #define GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER 512
3631 #define GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER 64
3636 guint32 buffer_index;
3637 guint32 mountpoint_index;
3638 guint32 field_number;
3639 guint32 allocated_size;
3640 guint32 fsname_index;
3641 guint32 fstype_index;
3642 gchar mountpoint [GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER + 1];
3643 gchar *mountpoint_allocated;
3644 gchar buffer [GET_LOGICAL_DRIVE_STRINGS_BUFFER];
3645 gchar fsname [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3646 gchar fstype [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3649 gboolean check_mount_source;
3650 } LinuxMountInfoParseState;
3652 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3653 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3654 static void append_to_mountpoint (LinuxMountInfoParseState *state);
3655 static gboolean add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3657 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3661 LinuxMountInfoParseState state;
3662 gboolean (*parser)(guint32, gunichar2*, LinuxMountInfoParseState*) = NULL;
3664 memset (buf, 0, len * sizeof (gunichar2));
3665 fd = open ("/proc/self/mountinfo", O_RDONLY);
3667 parser = GetLogicalDriveStrings_MountInfo;
3669 fd = open ("/proc/mounts", O_RDONLY);
3671 parser = GetLogicalDriveStrings_Mounts;
3675 ret = GetLogicalDriveStrings_Mtab (len, buf);
3679 memset (&state, 0, sizeof (LinuxMountInfoParseState));
3680 state.field_number = 1;
3681 state.delimiter = ' ';
3683 while ((state.nbytes = read (fd, state.buffer, GET_LOGICAL_DRIVE_STRINGS_BUFFER)) > 0) {
3684 state.buffer_index = 0;
3686 while ((*parser)(len, buf, &state)) {
3687 if (state.buffer [state.buffer_index] == '\n') {
3688 gboolean quit = add_drive_string (len, buf, &state);
3689 state.field_number = 1;
3690 state.buffer_index++;
3691 if (state.mountpoint_allocated) {
3692 g_free (state.mountpoint_allocated);
3693 state.mountpoint_allocated = NULL;
3710 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3714 if (state->field_number == 1)
3715 state->check_mount_source = TRUE;
3717 while (state->buffer_index < (guint32)state->nbytes) {
3718 if (state->buffer [state->buffer_index] == state->delimiter) {
3719 state->field_number++;
3720 switch (state->field_number) {
3722 state->mountpoint_index = 0;
3726 if (state->mountpoint_allocated)
3727 state->mountpoint_allocated [state->mountpoint_index] = 0;
3729 state->mountpoint [state->mountpoint_index] = 0;
3733 ptr = (gchar*)memchr (state->buffer + state->buffer_index, '\n', GET_LOGICAL_DRIVE_STRINGS_BUFFER - state->buffer_index);
3735 state->buffer_index = (ptr - (gchar*)state->buffer) - 1;
3737 state->buffer_index = state->nbytes;
3740 state->buffer_index++;
3742 } else if (state->buffer [state->buffer_index] == '\n')
3745 switch (state->field_number) {
3747 if (state->check_mount_source) {
3748 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3749 /* We can ignore the rest, it's a device
3751 state->check_mount_source = FALSE;
3752 state->fsname [state->fsname_index++] = '/';
3755 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3756 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3761 append_to_mountpoint (state);
3765 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3766 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3770 state->buffer_index++;
3776 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3778 while (state->buffer_index < (guint32)state->nbytes) {
3779 if (state->buffer [state->buffer_index] == state->delimiter) {
3780 state->field_number++;
3781 switch (state->field_number) {
3783 state->mountpoint_index = 0;
3787 if (state->mountpoint_allocated)
3788 state->mountpoint_allocated [state->mountpoint_index] = 0;
3790 state->mountpoint [state->mountpoint_index] = 0;
3794 state->delimiter = '-';
3798 state->delimiter = ' ';
3802 state->check_mount_source = TRUE;
3805 state->buffer_index++;
3807 } else if (state->buffer [state->buffer_index] == '\n')
3810 switch (state->field_number) {
3812 append_to_mountpoint (state);
3816 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3817 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3821 if (state->check_mount_source) {
3822 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3823 /* We can ignore the rest, it's a device
3825 state->check_mount_source = FALSE;
3826 state->fsname [state->fsname_index++] = '/';
3829 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3830 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3835 state->buffer_index++;
3842 append_to_mountpoint (LinuxMountInfoParseState *state)
3844 gchar ch = state->buffer [state->buffer_index];
3845 if (state->mountpoint_allocated) {
3846 if (state->mountpoint_index >= state->allocated_size) {
3847 guint32 newsize = (state->allocated_size << 1) + 1;
3848 gchar *newbuf = (gchar *)g_malloc0 (newsize * sizeof (gchar));
3850 memcpy (newbuf, state->mountpoint_allocated, state->mountpoint_index);
3851 g_free (state->mountpoint_allocated);
3852 state->mountpoint_allocated = newbuf;
3853 state->allocated_size = newsize;
3855 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3857 if (state->mountpoint_index >= GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER) {
3858 state->allocated_size = (state->mountpoint_index << 1) + 1;
3859 state->mountpoint_allocated = (gchar *)g_malloc0 (state->allocated_size * sizeof (gchar));
3860 memcpy (state->mountpoint_allocated, state->mountpoint, state->mountpoint_index);
3861 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3863 state->mountpoint [state->mountpoint_index++] = ch;
3868 add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3870 gboolean quit = FALSE;
3871 gboolean ignore_entry;
3873 if (state->fsname_index == 1 && state->fsname [0] == '/')
3874 ignore_entry = FALSE;
3875 else if (memcmp ("overlay", state->fsname, state->fsname_index) == 0 ||
3876 memcmp ("aufs", state->fstype, state->fstype_index) == 0) {
3877 /* Don't ignore overlayfs and aufs - these might be used on Docker
3878 * (https://bugzilla.xamarin.com/show_bug.cgi?id=31021) */
3879 ignore_entry = FALSE;
3880 } else if (state->fsname_index == 0 || memcmp ("none", state->fsname, state->fsname_index) == 0) {
3881 ignore_entry = TRUE;
3882 } else if (state->fstype_index >= 5 && memcmp ("fuse.", state->fstype, 5) == 0) {
3883 /* Ignore GNOME's gvfs */
3884 if (state->fstype_index == 21 && memcmp ("fuse.gvfs-fuse-daemon", state->fstype, state->fstype_index) == 0)
3885 ignore_entry = TRUE;
3887 ignore_entry = FALSE;
3888 } else if (state->fstype_index == 3 && memcmp ("nfs", state->fstype, state->fstype_index) == 0)
3889 ignore_entry = FALSE;
3891 ignore_entry = TRUE;
3893 if (!ignore_entry) {
3896 gchar *mountpoint = state->mountpoint_allocated ? state->mountpoint_allocated : state->mountpoint;
3898 unescape_octal (mountpoint);
3899 dir = g_utf8_to_utf16 (mountpoint, -1, NULL, &length, NULL);
3900 if (state->total + length + 1 > len) {
3902 state->total = len * 2;
3905 memcpy (buf + state->total, dir, sizeof (gunichar2) * length);
3906 state->total += length;
3910 state->fsname_index = 0;
3911 state->fstype_index = 0;
3917 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3919 return GetLogicalDriveStrings_Mtab (len, buf);
3923 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf)
3926 gunichar2 *ptr, *dir;
3927 glong length, total = 0;
3931 memset (buf, 0, sizeof (gunichar2) * (len + 1));
3936 /* Sigh, mntent and friends don't work well.
3937 * It stops on the first line that doesn't begin with a '/'.
3938 * (linux 2.6.5, libc 2.3.2.ds1-12) - Gonz */
3939 fp = fopen ("/etc/mtab", "rt");
3941 fp = fopen ("/etc/mnttab", "rt");
3947 while (fgets (buffer, 512, fp) != NULL) {
3951 splitted = g_strsplit (buffer, " ", 0);
3952 if (!*splitted || !*(splitted + 1)) {
3953 g_strfreev (splitted);
3957 unescape_octal (*(splitted + 1));
3958 dir = g_utf8_to_utf16 (*(splitted + 1), -1, NULL, &length, NULL);
3959 g_strfreev (splitted);
3960 if (total + length + 1 > len) {
3963 return len * 2; /* guess */
3966 memcpy (ptr + total, dir, sizeof (gunichar2) * length);
3968 total += length + 1;
3973 /* Commented out, does not work with my mtab!!! - Gonz */
3974 #ifdef NOTENABLED /* HAVE_MNTENT_H */
3978 gunichar2 *ptr, *dir;
3979 glong len, total = 0;
3982 fp = setmntent ("/etc/mtab", "rt");
3984 fp = setmntent ("/etc/mnttab", "rt");
3990 while ((mnt = getmntent (fp)) != NULL) {
3991 g_print ("GOT %s\n", mnt->mnt_dir);
3992 dir = g_utf8_to_utf16 (mnt->mnt_dir, &len, NULL, NULL, NULL);
3993 if (total + len + 1 > len) {
3994 return len * 2; /* guess */
3997 memcpy (ptr + total, dir, sizeof (gunichar2) * len);
4009 #if defined(HAVE_STATVFS) || defined(HAVE_STATFS)
4010 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, ULARGE_INTEGER *free_bytes_avail,
4011 ULARGE_INTEGER *total_number_of_bytes,
4012 ULARGE_INTEGER *total_number_of_free_bytes)
4015 struct statvfs fsstat;
4016 #elif defined(HAVE_STATFS)
4017 struct statfs fsstat;
4019 gboolean isreadonly;
4020 gchar *utf8_path_name;
4022 unsigned long block_size;
4024 if (path_name == NULL) {
4025 utf8_path_name = g_strdup (g_get_current_dir());
4026 if (utf8_path_name == NULL) {
4027 SetLastError (ERROR_DIRECTORY);
4032 utf8_path_name = mono_unicode_to_external (path_name);
4033 if (utf8_path_name == NULL) {
4034 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4036 SetLastError (ERROR_INVALID_NAME);
4043 ret = statvfs (utf8_path_name, &fsstat);
4044 isreadonly = ((fsstat.f_flag & ST_RDONLY) == ST_RDONLY);
4045 block_size = fsstat.f_frsize;
4046 #elif defined(HAVE_STATFS)
4047 ret = statfs (utf8_path_name, &fsstat);
4048 #if defined (MNT_RDONLY)
4049 isreadonly = ((fsstat.f_flags & MNT_RDONLY) == MNT_RDONLY);
4050 #elif defined (MS_RDONLY)
4051 isreadonly = ((fsstat.f_flags & MS_RDONLY) == MS_RDONLY);
4053 block_size = fsstat.f_bsize;
4055 } while(ret == -1 && errno == EINTR);
4057 g_free(utf8_path_name);
4060 _wapi_set_last_error_from_errno ();
4061 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: statvfs failed: %s", __func__, strerror (errno));
4065 /* total number of free bytes for non-root */
4066 if (free_bytes_avail != NULL) {
4068 free_bytes_avail->QuadPart = 0;
4071 free_bytes_avail->QuadPart = block_size * (guint64)fsstat.f_bavail;
4075 /* total number of bytes available for non-root */
4076 if (total_number_of_bytes != NULL) {
4077 total_number_of_bytes->QuadPart = block_size * (guint64)fsstat.f_blocks;
4080 /* total number of bytes available for root */
4081 if (total_number_of_free_bytes != NULL) {
4083 total_number_of_free_bytes->QuadPart = 0;
4086 total_number_of_free_bytes->QuadPart = block_size * (guint64)fsstat.f_bfree;
4093 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, ULARGE_INTEGER *free_bytes_avail,
4094 ULARGE_INTEGER *total_number_of_bytes,
4095 ULARGE_INTEGER *total_number_of_free_bytes)
4097 if (free_bytes_avail != NULL) {
4098 free_bytes_avail->QuadPart = (guint64) -1;
4101 if (total_number_of_bytes != NULL) {
4102 total_number_of_bytes->QuadPart = (guint64) -1;
4105 if (total_number_of_free_bytes != NULL) {
4106 total_number_of_free_bytes->QuadPart = (guint64) -1;
4114 * General Unix support
4119 const long fstypeid;
4121 const gchar* fstype;
4124 static _wapi_drive_type _wapi_drive_types[] = {
4126 { DRIVE_REMOTE, "afp" },
4127 { DRIVE_REMOTE, "autofs" },
4128 { DRIVE_CDROM, "cddafs" },
4129 { DRIVE_CDROM, "cd9660" },
4130 { DRIVE_RAMDISK, "devfs" },
4131 { DRIVE_FIXED, "exfat" },
4132 { DRIVE_RAMDISK, "fdesc" },
4133 { DRIVE_REMOTE, "ftp" },
4134 { DRIVE_FIXED, "hfs" },
4135 { DRIVE_FIXED, "msdos" },
4136 { DRIVE_REMOTE, "nfs" },
4137 { DRIVE_FIXED, "ntfs" },
4138 { DRIVE_REMOTE, "smbfs" },
4139 { DRIVE_FIXED, "udf" },
4140 { DRIVE_REMOTE, "webdav" },
4141 { DRIVE_UNKNOWN, NULL }
4143 { DRIVE_FIXED, ADFS_SUPER_MAGIC, "adfs"},
4144 { DRIVE_FIXED, AFFS_SUPER_MAGIC, "affs"},
4145 { DRIVE_REMOTE, AFS_SUPER_MAGIC, "afs"},
4146 { DRIVE_RAMDISK, AUTOFS_SUPER_MAGIC, "autofs"},
4147 { DRIVE_RAMDISK, AUTOFS_SBI_MAGIC, "autofs4"},
4148 { DRIVE_REMOTE, CODA_SUPER_MAGIC, "coda" },
4149 { DRIVE_RAMDISK, CRAMFS_MAGIC, "cramfs"},
4150 { DRIVE_RAMDISK, CRAMFS_MAGIC_WEND, "cramfs"},
4151 { DRIVE_REMOTE, CIFS_MAGIC_NUMBER, "cifs"},
4152 { DRIVE_RAMDISK, DEBUGFS_MAGIC, "debugfs"},
4153 { DRIVE_RAMDISK, SYSFS_MAGIC, "sysfs"},
4154 { DRIVE_RAMDISK, SECURITYFS_MAGIC, "securityfs"},
4155 { DRIVE_RAMDISK, SELINUX_MAGIC, "selinuxfs"},
4156 { DRIVE_RAMDISK, RAMFS_MAGIC, "ramfs"},
4157 { DRIVE_FIXED, SQUASHFS_MAGIC, "squashfs"},
4158 { DRIVE_FIXED, EFS_SUPER_MAGIC, "efs"},
4159 { DRIVE_FIXED, EXT2_SUPER_MAGIC, "ext"},
4160 { DRIVE_FIXED, EXT3_SUPER_MAGIC, "ext"},
4161 { DRIVE_FIXED, EXT4_SUPER_MAGIC, "ext"},
4162 { DRIVE_REMOTE, XENFS_SUPER_MAGIC, "xenfs"},
4163 { DRIVE_FIXED, BTRFS_SUPER_MAGIC, "btrfs"},
4164 { DRIVE_FIXED, HFS_SUPER_MAGIC, "hfs"},
4165 { DRIVE_FIXED, HFSPLUS_SUPER_MAGIC, "hfsplus"},
4166 { DRIVE_FIXED, HPFS_SUPER_MAGIC, "hpfs"},
4167 { DRIVE_RAMDISK, HUGETLBFS_MAGIC, "hugetlbfs"},
4168 { DRIVE_CDROM, ISOFS_SUPER_MAGIC, "iso"},
4169 { DRIVE_FIXED, JFFS2_SUPER_MAGIC, "jffs2"},
4170 { DRIVE_RAMDISK, ANON_INODE_FS_MAGIC, "anon_inode"},
4171 { DRIVE_FIXED, JFS_SUPER_MAGIC, "jfs"},
4172 { DRIVE_FIXED, MINIX_SUPER_MAGIC, "minix"},
4173 { DRIVE_FIXED, MINIX_SUPER_MAGIC2, "minix v2"},
4174 { DRIVE_FIXED, MINIX2_SUPER_MAGIC, "minix2"},
4175 { DRIVE_FIXED, MINIX2_SUPER_MAGIC2, "minix2 v2"},
4176 { DRIVE_FIXED, MINIX3_SUPER_MAGIC, "minix3"},
4177 { DRIVE_FIXED, MSDOS_SUPER_MAGIC, "msdos"},
4178 { DRIVE_REMOTE, NCP_SUPER_MAGIC, "ncp"},
4179 { DRIVE_REMOTE, NFS_SUPER_MAGIC, "nfs"},
4180 { DRIVE_FIXED, NTFS_SB_MAGIC, "ntfs"},
4181 { DRIVE_RAMDISK, OPENPROM_SUPER_MAGIC, "openpromfs"},
4182 { DRIVE_RAMDISK, PROC_SUPER_MAGIC, "proc"},
4183 { DRIVE_FIXED, QNX4_SUPER_MAGIC, "qnx4"},
4184 { DRIVE_FIXED, REISERFS_SUPER_MAGIC, "reiserfs"},
4185 { DRIVE_RAMDISK, ROMFS_MAGIC, "romfs"},
4186 { DRIVE_REMOTE, SMB_SUPER_MAGIC, "samba"},
4187 { DRIVE_RAMDISK, CGROUP_SUPER_MAGIC, "cgroupfs"},
4188 { DRIVE_RAMDISK, FUTEXFS_SUPER_MAGIC, "futexfs"},
4189 { DRIVE_FIXED, SYSV2_SUPER_MAGIC, "sysv2"},
4190 { DRIVE_FIXED, SYSV4_SUPER_MAGIC, "sysv4"},
4191 { DRIVE_RAMDISK, TMPFS_MAGIC, "tmpfs"},
4192 { DRIVE_RAMDISK, DEVPTS_SUPER_MAGIC, "devpts"},
4193 { DRIVE_CDROM, UDF_SUPER_MAGIC, "udf"},
4194 { DRIVE_FIXED, UFS_MAGIC, "ufs"},
4195 { DRIVE_FIXED, UFS_MAGIC_BW, "ufs"},
4196 { DRIVE_FIXED, UFS2_MAGIC, "ufs2"},
4197 { DRIVE_FIXED, UFS_CIGAM, "ufs"},
4198 { DRIVE_RAMDISK, USBDEVICE_SUPER_MAGIC, "usbdev"},
4199 { DRIVE_FIXED, XENIX_SUPER_MAGIC, "xenix"},
4200 { DRIVE_FIXED, XFS_SB_MAGIC, "xfs"},
4201 { DRIVE_RAMDISK, FUSE_SUPER_MAGIC, "fuse"},
4202 { DRIVE_FIXED, V9FS_MAGIC, "9p"},
4203 { DRIVE_REMOTE, CEPH_SUPER_MAGIC, "ceph"},
4204 { DRIVE_RAMDISK, CONFIGFS_MAGIC, "configfs"},
4205 { DRIVE_RAMDISK, ECRYPTFS_SUPER_MAGIC, "eCryptfs"},
4206 { DRIVE_FIXED, EXOFS_SUPER_MAGIC, "exofs"},
4207 { DRIVE_FIXED, VXFS_SUPER_MAGIC, "vxfs"},
4208 { DRIVE_FIXED, VXFS_OLT_MAGIC, "vxfs_olt"},
4209 { DRIVE_REMOTE, GFS2_MAGIC, "gfs2"},
4210 { DRIVE_FIXED, LOGFS_MAGIC_U32, "logfs"},
4211 { DRIVE_FIXED, OCFS2_SUPER_MAGIC, "ocfs2"},
4212 { DRIVE_FIXED, OMFS_MAGIC, "omfs"},
4213 { DRIVE_FIXED, UBIFS_SUPER_MAGIC, "ubifs"},
4214 { DRIVE_UNKNOWN, 0, NULL}
4216 { DRIVE_RAMDISK, "ramfs" },
4217 { DRIVE_RAMDISK, "tmpfs" },
4218 { DRIVE_RAMDISK, "proc" },
4219 { DRIVE_RAMDISK, "sysfs" },
4220 { DRIVE_RAMDISK, "debugfs" },
4221 { DRIVE_RAMDISK, "devpts" },
4222 { DRIVE_RAMDISK, "securityfs" },
4223 { DRIVE_CDROM, "iso9660" },
4224 { DRIVE_FIXED, "ext2" },
4225 { DRIVE_FIXED, "ext3" },
4226 { DRIVE_FIXED, "ext4" },
4227 { DRIVE_FIXED, "sysv" },
4228 { DRIVE_FIXED, "reiserfs" },
4229 { DRIVE_FIXED, "ufs" },
4230 { DRIVE_FIXED, "vfat" },
4231 { DRIVE_FIXED, "msdos" },
4232 { DRIVE_FIXED, "udf" },
4233 { DRIVE_FIXED, "hfs" },
4234 { DRIVE_FIXED, "hpfs" },
4235 { DRIVE_FIXED, "qnx4" },
4236 { DRIVE_FIXED, "ntfs" },
4237 { DRIVE_FIXED, "ntfs-3g" },
4238 { DRIVE_REMOTE, "smbfs" },
4239 { DRIVE_REMOTE, "fuse" },
4240 { DRIVE_REMOTE, "nfs" },
4241 { DRIVE_REMOTE, "nfs4" },
4242 { DRIVE_REMOTE, "cifs" },
4243 { DRIVE_REMOTE, "ncpfs" },
4244 { DRIVE_REMOTE, "coda" },
4245 { DRIVE_REMOTE, "afs" },
4246 { DRIVE_UNKNOWN, NULL }
4251 static guint32 _wapi_get_drive_type(long f_type)
4253 _wapi_drive_type *current;
4255 current = &_wapi_drive_types[0];
4256 while (current->drive_type != DRIVE_UNKNOWN) {
4257 if (current->fstypeid == f_type)
4258 return current->drive_type;
4262 return DRIVE_UNKNOWN;
4265 static guint32 _wapi_get_drive_type(const gchar* fstype)
4267 _wapi_drive_type *current;
4269 current = &_wapi_drive_types[0];
4270 while (current->drive_type != DRIVE_UNKNOWN) {
4271 if (strcmp (current->fstype, fstype) == 0)
4277 return current->drive_type;
4281 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4283 GetDriveTypeFromPath (const char *utf8_root_path_name)
4287 if (statfs (utf8_root_path_name, &buf) == -1)
4288 return DRIVE_UNKNOWN;
4290 return _wapi_get_drive_type (buf.f_fstypename);
4292 return _wapi_get_drive_type (buf.f_type);
4297 GetDriveTypeFromPath (const gchar *utf8_root_path_name)
4304 fp = fopen ("/etc/mtab", "rt");
4306 fp = fopen ("/etc/mnttab", "rt");
4308 return(DRIVE_UNKNOWN);
4311 drive_type = DRIVE_NO_ROOT_DIR;
4312 while (fgets (buffer, 512, fp) != NULL) {
4313 splitted = g_strsplit (buffer, " ", 0);
4314 if (!*splitted || !*(splitted + 1) || !*(splitted + 2)) {
4315 g_strfreev (splitted);
4319 /* compare given root_path_name with the one from mtab,
4320 if length of utf8_root_path_name is zero it must be the root dir */
4321 if (strcmp (*(splitted + 1), utf8_root_path_name) == 0 ||
4322 (strcmp (*(splitted + 1), "/") == 0 && strlen (utf8_root_path_name) == 0)) {
4323 drive_type = _wapi_get_drive_type (*(splitted + 2));
4324 /* it is possible this path might be mounted again with
4325 a known type...keep looking */
4326 if (drive_type != DRIVE_UNKNOWN) {
4327 g_strfreev (splitted);
4332 g_strfreev (splitted);
4340 guint32 GetDriveType(const gunichar2 *root_path_name)
4342 gchar *utf8_root_path_name;
4345 if (root_path_name == NULL) {
4346 utf8_root_path_name = g_strdup (g_get_current_dir());
4347 if (utf8_root_path_name == NULL) {
4348 return(DRIVE_NO_ROOT_DIR);
4352 utf8_root_path_name = mono_unicode_to_external (root_path_name);
4353 if (utf8_root_path_name == NULL) {
4354 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4355 return(DRIVE_NO_ROOT_DIR);
4358 /* strip trailing slash for compare below */
4359 if (g_str_has_suffix(utf8_root_path_name, "/") && utf8_root_path_name [1] != 0) {
4360 utf8_root_path_name[strlen(utf8_root_path_name) - 1] = 0;
4363 drive_type = GetDriveTypeFromPath (utf8_root_path_name);
4364 g_free (utf8_root_path_name);
4366 return (drive_type);
4369 #if defined (PLATFORM_MACOSX) || defined (__linux__) || defined(PLATFORM_BSD) || defined(__native_client__) || defined(__FreeBSD_kernel__)
4371 get_fstypename (gchar *utfpath)
4373 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4376 _wapi_drive_type *current;
4378 if (statfs (utfpath, &stat) == -1)
4381 return g_strdup (stat.f_fstypename);
4383 current = &_wapi_drive_types[0];
4384 while (current->drive_type != DRIVE_UNKNOWN) {
4385 if (stat.f_type == current->fstypeid)
4386 return g_strdup (current->fstype);
4396 /* Linux has struct statfs which has a different layout */
4398 GetVolumeInformation (const gunichar2 *path, gunichar2 *volumename, int volumesize, int *outserial, int *maxcomp, int *fsflags, gunichar2 *fsbuffer, int fsbuffersize)
4402 gboolean status = FALSE;
4405 // We only support getting the file system type
4406 if (fsbuffer == NULL)
4409 utfpath = mono_unicode_to_external (path);
4410 if ((fstypename = get_fstypename (utfpath)) != NULL){
4411 gunichar2 *ret = g_utf8_to_utf16 (fstypename, -1, NULL, &len, NULL);
4412 if (ret != NULL && len < fsbuffersize){
4413 memcpy (fsbuffer, ret, len * sizeof (gunichar2));
4419 g_free (fstypename);
4427 _wapi_io_init (void)
4429 mono_os_mutex_init (&stdhandle_mutex);
4430 mono_os_mutex_init (&file_share_mutex);
4432 mono_w32handle_register_ops (MONO_W32HANDLE_FILE, &_wapi_file_ops);
4433 mono_w32handle_register_ops (MONO_W32HANDLE_CONSOLE, &_wapi_console_ops);
4434 mono_w32handle_register_ops (MONO_W32HANDLE_FIND, &_wapi_find_ops);
4435 mono_w32handle_register_ops (MONO_W32HANDLE_PIPE, &_wapi_pipe_ops);
4437 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_FILE, */
4438 /* MONO_W32HANDLE_CAP_WAIT); */
4439 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_CONSOLE, */
4440 /* MONO_W32HANDLE_CAP_WAIT); */
4442 if (g_getenv ("MONO_STRICT_IO_EMULATION"))
4443 lock_while_writing = TRUE;
4447 _wapi_io_cleanup (void)
4449 mono_os_mutex_destroy (&file_share_mutex);
4451 if (file_share_hash)
4452 g_hash_table_destroy (file_share_hash);