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/timefuncs-private.h>
43 #include <mono/io-layer/io-portability.h>
44 #include <mono/io-layer/io-trace.h>
45 #include <mono/utils/strenc.h>
46 #include <mono/utils/mono-once.h>
47 #include <mono/utils/mono-logger-internals.h>
48 #include <mono/utils/w32handle.h>
51 * If SHM is disabled, this will point to a hash of _WapiFileShare structures, otherwise
52 * it will be NULL. We use this instead of _wapi_fileshare_layout to avoid allocating a
55 static GHashTable *file_share_hash;
56 static mono_mutex_t file_share_mutex;
59 _wapi_handle_share_release (_WapiFileShare *share_info)
61 /* Prevent new entries racing with us */
62 mono_os_mutex_lock (&file_share_mutex);
64 g_assert (share_info->handle_refs > 0);
65 share_info->handle_refs -= 1;
67 if (share_info->handle_refs == 0)
68 g_hash_table_remove (file_share_hash, share_info);
70 mono_os_mutex_unlock (&file_share_mutex);
74 wapi_share_info_equal (gconstpointer ka, gconstpointer kb)
76 const _WapiFileShare *s1 = (const _WapiFileShare *)ka;
77 const _WapiFileShare *s2 = (const _WapiFileShare *)kb;
79 return (s1->device == s2->device && s1->inode == s2->inode) ? 1 : 0;
83 wapi_share_info_hash (gconstpointer data)
85 const _WapiFileShare *s = (const _WapiFileShare *)data;
91 _wapi_handle_get_or_set_share (guint64 device, guint64 inode, guint32 new_sharemode, guint32 new_access,
92 guint32 *old_sharemode, guint32 *old_access, struct _WapiFileShare **share_info)
94 struct _WapiFileShare *file_share;
95 gboolean exists = FALSE;
97 /* Prevent new entries racing with us */
98 mono_os_mutex_lock (&file_share_mutex);
103 * Instead of allocating a 4MB array, we use a hash table to keep track of this
104 * info. This is needed even if SHM is disabled, to track sharing inside
105 * the current process.
107 if (!file_share_hash)
108 file_share_hash = g_hash_table_new_full (wapi_share_info_hash, wapi_share_info_equal, NULL, g_free);
113 file_share = (_WapiFileShare *)g_hash_table_lookup (file_share_hash, &tmp);
115 *old_sharemode = file_share->sharemode;
116 *old_access = file_share->access;
117 *share_info = file_share;
119 g_assert (file_share->handle_refs > 0);
120 file_share->handle_refs += 1;
124 file_share = g_new0 (_WapiFileShare, 1);
126 file_share->device = device;
127 file_share->inode = inode;
128 file_share->opened_by_pid = wapi_getpid ();
129 file_share->sharemode = new_sharemode;
130 file_share->access = new_access;
131 file_share->handle_refs = 1;
132 *share_info = file_share;
134 g_hash_table_insert (file_share_hash, file_share, file_share);
137 mono_os_mutex_unlock (&file_share_mutex);
142 static void file_close (gpointer handle, gpointer data);
143 static void file_details (gpointer data);
144 static const gchar* file_typename (void);
145 static gsize file_typesize (void);
146 static WapiFileType file_getfiletype(void);
147 static gboolean file_read(gpointer handle, gpointer buffer,
148 guint32 numbytes, guint32 *bytesread,
149 WapiOverlapped *overlapped);
150 static gboolean file_write(gpointer handle, gconstpointer buffer,
151 guint32 numbytes, guint32 *byteswritten,
152 WapiOverlapped *overlapped);
153 static gboolean file_flush(gpointer handle);
154 static guint32 file_seek(gpointer handle, gint32 movedistance,
155 gint32 *highmovedistance, WapiSeekMethod method);
156 static gboolean file_setendoffile(gpointer handle);
157 static guint32 file_getfilesize(gpointer handle, guint32 *highsize);
158 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
159 WapiFileTime *last_access,
160 WapiFileTime *last_write);
161 static gboolean file_setfiletime(gpointer handle,
162 const WapiFileTime *create_time,
163 const WapiFileTime *last_access,
164 const WapiFileTime *last_write);
165 static guint32 GetDriveTypeFromPath (const gchar *utf8_root_path_name);
167 /* File handle is only signalled for overlapped IO */
168 static MonoW32HandleOps _wapi_file_ops = {
169 file_close, /* close */
173 NULL, /* special_wait */
175 file_details, /* details */
176 file_typename, /* typename */
177 file_typesize, /* typesize */
180 static void console_close (gpointer handle, gpointer data);
181 static void console_details (gpointer data);
182 static const gchar* console_typename (void);
183 static gsize console_typesize (void);
184 static WapiFileType console_getfiletype(void);
185 static gboolean console_read(gpointer handle, gpointer buffer,
186 guint32 numbytes, guint32 *bytesread,
187 WapiOverlapped *overlapped);
188 static gboolean console_write(gpointer handle, gconstpointer buffer,
189 guint32 numbytes, guint32 *byteswritten,
190 WapiOverlapped *overlapped);
192 /* Console is mostly the same as file, except it can block waiting for
195 static MonoW32HandleOps _wapi_console_ops = {
196 console_close, /* close */
200 NULL, /* special_wait */
202 console_details, /* details */
203 console_typename, /* typename */
204 console_typesize, /* typesize */
207 static const gchar* find_typename (void);
208 static gsize find_typesize (void);
210 static MonoW32HandleOps _wapi_find_ops = {
215 NULL, /* special_wait */
218 find_typename, /* typename */
219 find_typesize, /* typesize */
222 static void pipe_close (gpointer handle, gpointer data);
223 static void pipe_details (gpointer data);
224 static const gchar* pipe_typename (void);
225 static gsize pipe_typesize (void);
226 static WapiFileType pipe_getfiletype (void);
227 static gboolean pipe_read (gpointer handle, gpointer buffer, guint32 numbytes,
228 guint32 *bytesread, WapiOverlapped *overlapped);
229 static gboolean pipe_write (gpointer handle, gconstpointer buffer,
230 guint32 numbytes, guint32 *byteswritten,
231 WapiOverlapped *overlapped);
235 static MonoW32HandleOps _wapi_pipe_ops = {
236 pipe_close, /* close */
240 NULL, /* special_wait */
242 pipe_details, /* details */
243 pipe_typename, /* typename */
244 pipe_typesize, /* typesize */
247 static const struct {
248 /* File, console and pipe handles */
249 WapiFileType (*getfiletype)(void);
251 /* File, console and pipe handles */
252 gboolean (*readfile)(gpointer handle, gpointer buffer,
253 guint32 numbytes, guint32 *bytesread,
254 WapiOverlapped *overlapped);
255 gboolean (*writefile)(gpointer handle, gconstpointer buffer,
256 guint32 numbytes, guint32 *byteswritten,
257 WapiOverlapped *overlapped);
258 gboolean (*flushfile)(gpointer handle);
261 guint32 (*seek)(gpointer handle, gint32 movedistance,
262 gint32 *highmovedistance, WapiSeekMethod method);
263 gboolean (*setendoffile)(gpointer handle);
264 guint32 (*getfilesize)(gpointer handle, guint32 *highsize);
265 gboolean (*getfiletime)(gpointer handle, WapiFileTime *create_time,
266 WapiFileTime *last_access,
267 WapiFileTime *last_write);
268 gboolean (*setfiletime)(gpointer handle,
269 const WapiFileTime *create_time,
270 const WapiFileTime *last_access,
271 const WapiFileTime *last_write);
272 } io_ops[MONO_W32HANDLE_COUNT]={
273 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
276 file_read, file_write,
277 file_flush, file_seek,
283 {console_getfiletype,
286 NULL, NULL, NULL, NULL, NULL, NULL},
288 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
290 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
292 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
294 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
295 /* socket (will need at least read and write) */
296 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
298 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
300 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
305 NULL, NULL, NULL, NULL, NULL, NULL},
308 static gboolean lock_while_writing = FALSE;
310 /* Some utility functions.
314 * Check if a file is writable by the current user.
316 * This is is a best effort kind of thing. It assumes a reasonable sane set
317 * of permissions by the underlying OS.
319 * We generally assume that basic unix permission bits are authoritative. Which might not
320 * be the case under systems with extended permissions systems (posix ACLs, SELinux, OSX/iOS sandboxing, etc)
322 * The choice of access as the fallback is due to the expected lower overhead compared to trying to open the file.
324 * The only expected problem with using access are for root, setuid or setgid programs as access is not consistent
325 * under those situations. It's to be expected that this should not happen in practice as those bits are very dangerous
326 * and should not be used with a dynamic runtime.
329 is_file_writable (struct stat *st, const char *path)
332 // OS X Finder "locked" or `ls -lO` "uchg".
333 // This only covers one of several cases where an OS X file could be unwritable through special flags.
334 if (st->st_flags & (UF_IMMUTABLE|SF_IMMUTABLE))
338 /* Is it globally writable? */
339 if (st->st_mode & S_IWOTH)
342 /* Am I the owner? */
343 if ((st->st_uid == geteuid ()) && (st->st_mode & S_IWUSR))
346 /* Am I in the same group? */
347 if ((st->st_gid == getegid ()) && (st->st_mode & S_IWGRP))
350 /* Fallback to using access(2). It's not ideal as it might not take into consideration euid/egid
351 * but it's the only sane option we have on unix.
353 return access (path, W_OK) == 0;
357 static guint32 _wapi_stat_to_file_attributes (const gchar *pathname,
364 /* FIXME: this could definitely be better, but there seems to
365 * be no pattern to the attributes that are set
368 /* Sockets (0140000) != Directory (040000) + Regular file (0100000) */
369 if (S_ISSOCK (buf->st_mode))
370 buf->st_mode &= ~S_IFSOCK; /* don't consider socket protection */
372 filename = _wapi_basename (pathname);
374 if (S_ISDIR (buf->st_mode)) {
375 attrs = FILE_ATTRIBUTE_DIRECTORY;
376 if (!is_file_writable (buf, pathname)) {
377 attrs |= FILE_ATTRIBUTE_READONLY;
379 if (filename[0] == '.') {
380 attrs |= FILE_ATTRIBUTE_HIDDEN;
383 if (!is_file_writable (buf, pathname)) {
384 attrs = FILE_ATTRIBUTE_READONLY;
386 if (filename[0] == '.') {
387 attrs |= FILE_ATTRIBUTE_HIDDEN;
389 } else if (filename[0] == '.') {
390 attrs = FILE_ATTRIBUTE_HIDDEN;
392 attrs = FILE_ATTRIBUTE_NORMAL;
397 if (S_ISLNK (lbuf->st_mode)) {
398 attrs |= FILE_ATTRIBUTE_REPARSE_POINT;
408 _wapi_set_last_error_from_errno (void)
410 SetLastError (_wapi_get_win32_file_error (errno));
413 static void _wapi_set_last_path_error_from_errno (const gchar *dir,
416 if (errno == ENOENT) {
417 /* Check the path - if it's a missing directory then
418 * we need to set PATH_NOT_FOUND not FILE_NOT_FOUND
424 dirname = _wapi_dirname (path);
426 dirname = g_strdup (dir);
429 if (_wapi_access (dirname, F_OK) == 0) {
430 SetLastError (ERROR_FILE_NOT_FOUND);
432 SetLastError (ERROR_PATH_NOT_FOUND);
437 _wapi_set_last_error_from_errno ();
443 static void file_close (gpointer handle, gpointer data)
445 struct _WapiHandle_file *file_handle = (struct _WapiHandle_file *)data;
446 int fd = file_handle->fd;
448 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing file handle %p [%s]", __func__, handle,
449 file_handle->filename);
451 if (file_handle->attrs & FILE_FLAG_DELETE_ON_CLOSE)
452 _wapi_unlink (file_handle->filename);
454 g_free (file_handle->filename);
456 if (file_handle->share_info)
457 _wapi_handle_share_release (file_handle->share_info);
462 static void file_details (gpointer data)
464 struct _WapiHandle_file *file = (struct _WapiHandle_file *)data;
466 g_print ("[%20s] acc: %c%c%c, shr: %c%c%c, attrs: %5u",
468 file->fileaccess&GENERIC_READ?'R':'.',
469 file->fileaccess&GENERIC_WRITE?'W':'.',
470 file->fileaccess&GENERIC_EXECUTE?'X':'.',
471 file->sharemode&FILE_SHARE_READ?'R':'.',
472 file->sharemode&FILE_SHARE_WRITE?'W':'.',
473 file->sharemode&FILE_SHARE_DELETE?'D':'.',
477 static const gchar* file_typename (void)
482 static gsize file_typesize (void)
484 return sizeof (struct _WapiHandle_file);
487 static WapiFileType file_getfiletype(void)
489 return(FILE_TYPE_DISK);
492 static gboolean file_read(gpointer handle, gpointer buffer,
493 guint32 numbytes, guint32 *bytesread,
494 WapiOverlapped *overlapped)
496 struct _WapiHandle_file *file_handle;
499 MonoThreadInfo *info = mono_thread_info_current ();
501 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
502 (gpointer *)&file_handle);
504 g_warning ("%s: error looking up file handle %p", __func__,
506 SetLastError (ERROR_INVALID_HANDLE);
510 fd = file_handle->fd;
511 if(bytesread!=NULL) {
515 if(!(file_handle->fileaccess & GENERIC_READ) &&
516 !(file_handle->fileaccess & GENERIC_ALL)) {
517 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
518 __func__, handle, file_handle->fileaccess);
520 SetLastError (ERROR_ACCESS_DENIED);
525 ret = read (fd, buffer, numbytes);
526 } while (ret == -1 && errno == EINTR &&
527 !mono_thread_info_is_interrupt_state (info));
532 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
533 handle, strerror(err));
534 SetLastError (_wapi_get_win32_file_error (err));
538 if (bytesread != NULL) {
545 static gboolean file_write(gpointer handle, gconstpointer buffer,
546 guint32 numbytes, guint32 *byteswritten,
547 WapiOverlapped *overlapped G_GNUC_UNUSED)
549 struct _WapiHandle_file *file_handle;
552 off_t current_pos = 0;
553 MonoThreadInfo *info = mono_thread_info_current ();
555 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
556 (gpointer *)&file_handle);
558 g_warning ("%s: error looking up file handle %p", __func__,
560 SetLastError (ERROR_INVALID_HANDLE);
564 fd = file_handle->fd;
566 if(byteswritten!=NULL) {
570 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
571 !(file_handle->fileaccess & GENERIC_ALL)) {
572 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);
574 SetLastError (ERROR_ACCESS_DENIED);
578 if (lock_while_writing) {
579 /* Need to lock the region we're about to write to,
580 * because we only do advisory locking on POSIX
583 current_pos = lseek (fd, (off_t)0, SEEK_CUR);
584 if (current_pos == -1) {
585 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
586 handle, strerror (errno));
587 _wapi_set_last_error_from_errno ();
591 if (_wapi_lock_file_region (fd, current_pos,
592 numbytes) == FALSE) {
593 /* The error has already been set */
599 ret = write (fd, buffer, numbytes);
600 } while (ret == -1 && errno == EINTR &&
601 !mono_thread_info_is_interrupt_state (info));
603 if (lock_while_writing) {
604 _wapi_unlock_file_region (fd, current_pos, numbytes);
608 if (errno == EINTR) {
611 _wapi_set_last_error_from_errno ();
613 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
614 __func__, handle, strerror(errno));
619 if (byteswritten != NULL) {
625 static gboolean file_flush(gpointer handle)
627 struct _WapiHandle_file *file_handle;
631 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
632 (gpointer *)&file_handle);
634 g_warning ("%s: error looking up file handle %p", __func__,
636 SetLastError (ERROR_INVALID_HANDLE);
640 fd = file_handle->fd;
642 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
643 !(file_handle->fileaccess & GENERIC_ALL)) {
644 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);
646 SetLastError (ERROR_ACCESS_DENIED);
652 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fsync of handle %p error: %s", __func__, handle,
655 _wapi_set_last_error_from_errno ();
662 static guint32 file_seek(gpointer handle, gint32 movedistance,
663 gint32 *highmovedistance, WapiSeekMethod method)
665 struct _WapiHandle_file *file_handle;
667 gint64 offset, newpos;
671 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
672 (gpointer *)&file_handle);
674 g_warning ("%s: error looking up file handle %p", __func__,
676 SetLastError (ERROR_INVALID_HANDLE);
677 return(INVALID_SET_FILE_POINTER);
680 fd = file_handle->fd;
682 if(!(file_handle->fileaccess & GENERIC_READ) &&
683 !(file_handle->fileaccess & GENERIC_WRITE) &&
684 !(file_handle->fileaccess & GENERIC_ALL)) {
685 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);
687 SetLastError (ERROR_ACCESS_DENIED);
688 return(INVALID_SET_FILE_POINTER);
702 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: invalid seek type %d", __func__, method);
704 SetLastError (ERROR_INVALID_PARAMETER);
705 return(INVALID_SET_FILE_POINTER);
708 #ifdef HAVE_LARGE_FILE_SUPPORT
709 if(highmovedistance==NULL) {
711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting offset to %lld (low %d)", __func__,
712 offset, movedistance);
714 offset=((gint64) *highmovedistance << 32) | (guint32)movedistance;
716 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);
722 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: moving handle %p by %lld bytes from %d", __func__,
723 handle, (long long)offset, whence);
725 #ifdef PLATFORM_ANDROID
726 /* bionic doesn't support -D_FILE_OFFSET_BITS=64 */
727 newpos=lseek64(fd, offset, whence);
729 newpos=lseek(fd, offset, whence);
732 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek on handle %p returned error %s",
733 __func__, handle, strerror(errno));
735 _wapi_set_last_error_from_errno ();
736 return(INVALID_SET_FILE_POINTER);
739 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek returns %lld", __func__, newpos);
741 #ifdef HAVE_LARGE_FILE_SUPPORT
742 ret=newpos & 0xFFFFFFFF;
743 if(highmovedistance!=NULL) {
744 *highmovedistance=newpos>>32;
748 if(highmovedistance!=NULL) {
749 /* Accurate, but potentially dodgy :-) */
754 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: move of handle %p returning %d/%d", __func__,
755 handle, ret, highmovedistance==NULL?0:*highmovedistance);
760 static gboolean file_setendoffile(gpointer handle)
762 struct _WapiHandle_file *file_handle;
767 MonoThreadInfo *info = mono_thread_info_current ();
769 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
770 (gpointer *)&file_handle);
772 g_warning ("%s: error looking up file handle %p", __func__,
774 SetLastError (ERROR_INVALID_HANDLE);
777 fd = file_handle->fd;
779 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
780 !(file_handle->fileaccess & GENERIC_ALL)) {
781 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);
783 SetLastError (ERROR_ACCESS_DENIED);
787 /* Find the current file position, and the file length. If
788 * the file position is greater than the length, write to
789 * extend the file with a hole. If the file position is less
790 * than the length, truncate the file.
793 ret=fstat(fd, &statbuf);
795 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
796 handle, strerror(errno));
798 _wapi_set_last_error_from_errno ();
802 pos=lseek(fd, (off_t)0, SEEK_CUR);
804 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
805 handle, strerror(errno));
807 _wapi_set_last_error_from_errno ();
811 #ifdef FTRUNCATE_DOESNT_EXTEND
812 off_t size = statbuf.st_size;
813 /* I haven't bothered to write the configure.ac stuff for this
814 * because I don't know if any platform needs it. I'm leaving
815 * this code just in case though
818 /* Extend the file. Use write() here, because some
819 * manuals say that ftruncate() behaviour is undefined
820 * when the file needs extending. The POSIX spec says
821 * that on XSI-conformant systems it extends, so if
822 * every system we care about conforms, then we can
826 ret = write (fd, "", 1);
827 } while (ret == -1 && errno == EINTR &&
828 !mono_thread_info_is_interrupt_state (info));
831 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p extend write failed: %s", __func__, handle, strerror(errno));
833 _wapi_set_last_error_from_errno ();
837 /* And put the file position back after the write */
838 ret = lseek (fd, pos, SEEK_SET);
840 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p second lseek failed: %s",
841 __func__, handle, strerror(errno));
843 _wapi_set_last_error_from_errno ();
849 /* Native Client has no ftruncate function, even in standalone sel_ldr. */
850 #ifndef __native_client__
851 /* always truncate, because the extend write() adds an extra
852 * byte to the end of the file
855 ret=ftruncate(fd, pos);
857 while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
859 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ftruncate failed: %s", __func__,
860 handle, strerror(errno));
862 _wapi_set_last_error_from_errno ();
870 static guint32 file_getfilesize(gpointer handle, guint32 *highsize)
872 struct _WapiHandle_file *file_handle;
879 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
880 (gpointer *)&file_handle);
882 g_warning ("%s: error looking up file handle %p", __func__,
884 SetLastError (ERROR_INVALID_HANDLE);
885 return(INVALID_FILE_SIZE);
887 fd = file_handle->fd;
889 if(!(file_handle->fileaccess & GENERIC_READ) &&
890 !(file_handle->fileaccess & GENERIC_WRITE) &&
891 !(file_handle->fileaccess & GENERIC_ALL)) {
892 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);
894 SetLastError (ERROR_ACCESS_DENIED);
895 return(INVALID_FILE_SIZE);
898 /* If the file has a size with the low bits 0xFFFFFFFF the
899 * caller can't tell if this is an error, so clear the error
902 SetLastError (ERROR_SUCCESS);
904 ret = fstat(fd, &statbuf);
906 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
907 handle, strerror(errno));
909 _wapi_set_last_error_from_errno ();
910 return(INVALID_FILE_SIZE);
913 /* fstat indicates block devices as zero-length, so go a different path */
915 if (S_ISBLK(statbuf.st_mode)) {
917 if (ioctl(fd, BLKGETSIZE64, &bigsize) < 0) {
918 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ioctl BLKGETSIZE64 failed: %s",
919 __func__, handle, strerror(errno));
921 _wapi_set_last_error_from_errno ();
922 return(INVALID_FILE_SIZE);
925 size = bigsize & 0xFFFFFFFF;
926 if (highsize != NULL) {
927 *highsize = bigsize>>32;
930 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning block device size %d/%d",
931 __func__, size, *highsize);
937 #ifdef HAVE_LARGE_FILE_SUPPORT
938 size = statbuf.st_size & 0xFFFFFFFF;
939 if (highsize != NULL) {
940 *highsize = statbuf.st_size>>32;
943 if (highsize != NULL) {
944 /* Accurate, but potentially dodgy :-) */
947 size = statbuf.st_size;
950 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning size %d/%d", __func__, size, *highsize);
955 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
956 WapiFileTime *last_access,
957 WapiFileTime *last_write)
959 struct _WapiHandle_file *file_handle;
962 guint64 create_ticks, access_ticks, write_ticks;
965 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
966 (gpointer *)&file_handle);
968 g_warning ("%s: error looking up file handle %p", __func__,
970 SetLastError (ERROR_INVALID_HANDLE);
973 fd = file_handle->fd;
975 if(!(file_handle->fileaccess & GENERIC_READ) &&
976 !(file_handle->fileaccess & GENERIC_ALL)) {
977 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
978 __func__, handle, file_handle->fileaccess);
980 SetLastError (ERROR_ACCESS_DENIED);
984 ret=fstat(fd, &statbuf);
986 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
989 _wapi_set_last_error_from_errno ();
993 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: atime: %ld ctime: %ld mtime: %ld", __func__,
994 statbuf.st_atime, statbuf.st_ctime,
997 /* Try and guess a meaningful create time by using the older
1000 /* The magic constant comes from msdn documentation
1001 * "Converting a time_t Value to a File Time"
1003 if(statbuf.st_atime < statbuf.st_ctime) {
1004 create_ticks=((guint64)statbuf.st_atime*10000000)
1005 + 116444736000000000ULL;
1007 create_ticks=((guint64)statbuf.st_ctime*10000000)
1008 + 116444736000000000ULL;
1011 access_ticks=((guint64)statbuf.st_atime*10000000)+116444736000000000ULL;
1012 write_ticks=((guint64)statbuf.st_mtime*10000000)+116444736000000000ULL;
1014 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: aticks: %llu cticks: %llu wticks: %llu", __func__,
1015 access_ticks, create_ticks, write_ticks);
1017 if(create_time!=NULL) {
1018 create_time->dwLowDateTime = create_ticks & 0xFFFFFFFF;
1019 create_time->dwHighDateTime = create_ticks >> 32;
1022 if(last_access!=NULL) {
1023 last_access->dwLowDateTime = access_ticks & 0xFFFFFFFF;
1024 last_access->dwHighDateTime = access_ticks >> 32;
1027 if(last_write!=NULL) {
1028 last_write->dwLowDateTime = write_ticks & 0xFFFFFFFF;
1029 last_write->dwHighDateTime = write_ticks >> 32;
1035 static gboolean file_setfiletime(gpointer handle,
1036 const WapiFileTime *create_time G_GNUC_UNUSED,
1037 const WapiFileTime *last_access,
1038 const WapiFileTime *last_write)
1040 struct _WapiHandle_file *file_handle;
1042 struct utimbuf utbuf;
1043 struct stat statbuf;
1044 guint64 access_ticks, write_ticks;
1047 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
1048 (gpointer *)&file_handle);
1050 g_warning ("%s: error looking up file handle %p", __func__,
1052 SetLastError (ERROR_INVALID_HANDLE);
1055 fd = file_handle->fd;
1057 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
1058 !(file_handle->fileaccess & GENERIC_ALL)) {
1059 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);
1061 SetLastError (ERROR_ACCESS_DENIED);
1065 if(file_handle->filename == NULL) {
1066 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p unknown filename", __func__, handle);
1068 SetLastError (ERROR_INVALID_HANDLE);
1072 /* Get the current times, so we can put the same times back in
1073 * the event that one of the FileTime structs is NULL
1075 ret=fstat (fd, &statbuf);
1077 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
1080 SetLastError (ERROR_INVALID_PARAMETER);
1084 if(last_access!=NULL) {
1085 access_ticks=((guint64)last_access->dwHighDateTime << 32) +
1086 last_access->dwLowDateTime;
1087 /* This is (time_t)0. We can actually go to INT_MIN,
1088 * but this will do for now.
1090 if (access_ticks < 116444736000000000ULL) {
1091 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set access time too early",
1093 SetLastError (ERROR_INVALID_PARAMETER);
1097 if (sizeof (utbuf.actime) == 4 && ((access_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1098 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",
1100 SetLastError (ERROR_INVALID_PARAMETER);
1104 utbuf.actime=(access_ticks - 116444736000000000ULL) / 10000000;
1106 utbuf.actime=statbuf.st_atime;
1109 if(last_write!=NULL) {
1110 write_ticks=((guint64)last_write->dwHighDateTime << 32) +
1111 last_write->dwLowDateTime;
1112 /* This is (time_t)0. We can actually go to INT_MIN,
1113 * but this will do for now.
1115 if (write_ticks < 116444736000000000ULL) {
1116 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time too early",
1118 SetLastError (ERROR_INVALID_PARAMETER);
1121 if (sizeof (utbuf.modtime) == 4 && ((write_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1122 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",
1124 SetLastError (ERROR_INVALID_PARAMETER);
1128 utbuf.modtime=(write_ticks - 116444736000000000ULL) / 10000000;
1130 utbuf.modtime=statbuf.st_mtime;
1133 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting handle %p access %ld write %ld", __func__,
1134 handle, utbuf.actime, utbuf.modtime);
1136 ret = _wapi_utime (file_handle->filename, &utbuf);
1138 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p [%s] utime failed: %s", __func__,
1139 handle, file_handle->filename, strerror(errno));
1141 SetLastError (ERROR_INVALID_PARAMETER);
1148 static void console_close (gpointer handle, gpointer data)
1150 struct _WapiHandle_file *console_handle = (struct _WapiHandle_file *)data;
1151 int fd = console_handle->fd;
1153 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing console handle %p", __func__, handle);
1155 g_free (console_handle->filename);
1158 if (console_handle->share_info)
1159 _wapi_handle_share_release (console_handle->share_info);
1164 static void console_details (gpointer data)
1166 file_details (data);
1169 static const gchar* console_typename (void)
1174 static gsize console_typesize (void)
1176 return sizeof (struct _WapiHandle_file);
1179 static WapiFileType console_getfiletype(void)
1181 return(FILE_TYPE_CHAR);
1184 static gboolean console_read(gpointer handle, gpointer buffer,
1185 guint32 numbytes, guint32 *bytesread,
1186 WapiOverlapped *overlapped G_GNUC_UNUSED)
1188 struct _WapiHandle_file *console_handle;
1191 MonoThreadInfo *info = mono_thread_info_current ();
1193 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1194 (gpointer *)&console_handle);
1196 g_warning ("%s: error looking up console handle %p", __func__,
1198 SetLastError (ERROR_INVALID_HANDLE);
1201 fd = console_handle->fd;
1203 if(bytesread!=NULL) {
1207 if(!(console_handle->fileaccess & GENERIC_READ) &&
1208 !(console_handle->fileaccess & GENERIC_ALL)) {
1209 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1210 __func__, handle, console_handle->fileaccess);
1212 SetLastError (ERROR_ACCESS_DENIED);
1217 ret=read(fd, buffer, numbytes);
1218 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1221 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__, handle,
1224 _wapi_set_last_error_from_errno ();
1228 if(bytesread!=NULL) {
1235 static gboolean console_write(gpointer handle, gconstpointer buffer,
1236 guint32 numbytes, guint32 *byteswritten,
1237 WapiOverlapped *overlapped G_GNUC_UNUSED)
1239 struct _WapiHandle_file *console_handle;
1242 MonoThreadInfo *info = mono_thread_info_current ();
1244 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1245 (gpointer *)&console_handle);
1247 g_warning ("%s: error looking up console handle %p", __func__,
1249 SetLastError (ERROR_INVALID_HANDLE);
1252 fd = console_handle->fd;
1254 if(byteswritten!=NULL) {
1258 if(!(console_handle->fileaccess & GENERIC_WRITE) &&
1259 !(console_handle->fileaccess & GENERIC_ALL)) {
1260 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);
1262 SetLastError (ERROR_ACCESS_DENIED);
1267 ret = write(fd, buffer, numbytes);
1268 } while (ret == -1 && errno == EINTR &&
1269 !mono_thread_info_is_interrupt_state (info));
1272 if (errno == EINTR) {
1275 _wapi_set_last_error_from_errno ();
1277 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
1278 __func__, handle, strerror(errno));
1283 if(byteswritten!=NULL) {
1290 static const gchar* find_typename (void)
1295 static gsize find_typesize (void)
1297 return sizeof (struct _WapiHandle_find);
1300 static void pipe_close (gpointer handle, gpointer data)
1302 struct _WapiHandle_file *pipe_handle = (struct _WapiHandle_file*)data;
1303 int fd = pipe_handle->fd;
1305 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing pipe handle %p fd %d", __func__, handle, fd);
1307 /* No filename with pipe handles */
1309 if (pipe_handle->share_info)
1310 _wapi_handle_share_release (pipe_handle->share_info);
1315 static void pipe_details (gpointer data)
1317 file_details (data);
1320 static const gchar* pipe_typename (void)
1325 static gsize pipe_typesize (void)
1327 return sizeof (struct _WapiHandle_file);
1330 static WapiFileType pipe_getfiletype(void)
1332 return(FILE_TYPE_PIPE);
1335 static gboolean pipe_read (gpointer handle, gpointer buffer,
1336 guint32 numbytes, guint32 *bytesread,
1337 WapiOverlapped *overlapped G_GNUC_UNUSED)
1339 struct _WapiHandle_file *pipe_handle;
1342 MonoThreadInfo *info = mono_thread_info_current ();
1344 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1345 (gpointer *)&pipe_handle);
1347 g_warning ("%s: error looking up pipe handle %p", __func__,
1349 SetLastError (ERROR_INVALID_HANDLE);
1352 fd = pipe_handle->fd;
1354 if(bytesread!=NULL) {
1358 if(!(pipe_handle->fileaccess & GENERIC_READ) &&
1359 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1360 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1361 __func__, handle, pipe_handle->fileaccess);
1363 SetLastError (ERROR_ACCESS_DENIED);
1367 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: reading up to %d bytes from pipe %p", __func__,
1371 ret=read(fd, buffer, numbytes);
1372 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1375 if (errno == EINTR) {
1378 _wapi_set_last_error_from_errno ();
1380 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
1381 handle, strerror(errno));
1387 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read %d bytes from pipe %p", __func__, ret, handle);
1389 if(bytesread!=NULL) {
1396 static gboolean pipe_write(gpointer handle, gconstpointer buffer,
1397 guint32 numbytes, guint32 *byteswritten,
1398 WapiOverlapped *overlapped G_GNUC_UNUSED)
1400 struct _WapiHandle_file *pipe_handle;
1403 MonoThreadInfo *info = mono_thread_info_current ();
1405 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1406 (gpointer *)&pipe_handle);
1408 g_warning ("%s: error looking up pipe handle %p", __func__,
1410 SetLastError (ERROR_INVALID_HANDLE);
1413 fd = pipe_handle->fd;
1415 if(byteswritten!=NULL) {
1419 if(!(pipe_handle->fileaccess & GENERIC_WRITE) &&
1420 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1421 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);
1423 SetLastError (ERROR_ACCESS_DENIED);
1427 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: writing up to %d bytes to pipe %p", __func__, numbytes,
1431 ret = write (fd, buffer, numbytes);
1432 } while (ret == -1 && errno == EINTR &&
1433 !mono_thread_info_is_interrupt_state (info));
1436 if (errno == EINTR) {
1439 _wapi_set_last_error_from_errno ();
1441 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s", __func__,
1442 handle, strerror(errno));
1447 if(byteswritten!=NULL) {
1454 static int convert_flags(guint32 fileaccess, guint32 createmode)
1458 switch(fileaccess) {
1465 case GENERIC_READ|GENERIC_WRITE:
1469 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown access type 0x%x", __func__,
1474 switch(createmode) {
1476 flags|=O_CREAT|O_EXCL;
1479 flags|=O_CREAT|O_TRUNC;
1486 case TRUNCATE_EXISTING:
1490 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown create mode 0x%x", __func__,
1499 static mode_t convert_perms(guint32 sharemode)
1503 if(sharemode&FILE_SHARE_READ) {
1506 if(sharemode&FILE_SHARE_WRITE) {
1514 static gboolean share_allows_open (struct stat *statbuf, guint32 sharemode,
1516 struct _WapiFileShare **share_info)
1518 gboolean file_already_shared;
1519 guint32 file_existing_share, file_existing_access;
1521 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);
1523 if (file_already_shared) {
1524 /* The reference to this share info was incremented
1525 * when we looked it up, so be careful to put it back
1526 * if we conclude we can't use this file.
1528 if (file_existing_share == 0) {
1529 /* Quick and easy, no possibility to share */
1530 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);
1532 _wapi_handle_share_release (*share_info);
1537 if (((file_existing_share == FILE_SHARE_READ) &&
1538 (fileaccess != GENERIC_READ)) ||
1539 ((file_existing_share == FILE_SHARE_WRITE) &&
1540 (fileaccess != GENERIC_WRITE))) {
1541 /* New access mode doesn't match up */
1542 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);
1544 _wapi_handle_share_release (*share_info);
1549 if (((file_existing_access & GENERIC_READ) &&
1550 !(sharemode & FILE_SHARE_READ)) ||
1551 ((file_existing_access & GENERIC_WRITE) &&
1552 !(sharemode & FILE_SHARE_WRITE))) {
1553 /* New share mode doesn't match up */
1554 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);
1556 _wapi_handle_share_release (*share_info);
1561 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1569 share_allows_delete (struct stat *statbuf, struct _WapiFileShare **share_info)
1571 gboolean file_already_shared;
1572 guint32 file_existing_share, file_existing_access;
1574 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);
1576 if (file_already_shared) {
1577 /* The reference to this share info was incremented
1578 * when we looked it up, so be careful to put it back
1579 * if we conclude we can't use this file.
1581 if (file_existing_share == 0) {
1582 /* Quick and easy, no possibility to share */
1583 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);
1585 _wapi_handle_share_release (*share_info);
1590 if (!(file_existing_share & FILE_SHARE_DELETE)) {
1591 /* New access mode doesn't match up */
1592 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);
1594 _wapi_handle_share_release (*share_info);
1599 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1607 * @name: a pointer to a NULL-terminated unicode string, that names
1608 * the file or other object to create.
1609 * @fileaccess: specifies the file access mode
1610 * @sharemode: whether the file should be shared. This parameter is
1611 * currently ignored.
1612 * @security: Ignored for now.
1613 * @createmode: specifies whether to create a new file, whether to
1614 * overwrite an existing file, whether to truncate the file, etc.
1615 * @attrs: specifies file attributes and flags. On win32 attributes
1616 * are characteristics of the file, not the handle, and are ignored
1617 * when an existing file is opened. Flags give the library hints on
1618 * how to process a file to optimise performance.
1619 * @template: the handle of an open %GENERIC_READ file that specifies
1620 * attributes to apply to a newly created file, ignoring @attrs.
1621 * Normally this parameter is NULL. This parameter is ignored when an
1622 * existing file is opened.
1624 * Creates a new file handle. This only applies to normal files:
1625 * pipes are handled by CreatePipe(), and console handles are created
1626 * with GetStdHandle().
1628 * Return value: the new handle, or %INVALID_HANDLE_VALUE on error.
1630 gpointer CreateFile(const gunichar2 *name, guint32 fileaccess,
1631 guint32 sharemode, WapiSecurityAttributes *security,
1632 guint32 createmode, guint32 attrs,
1633 gpointer template_ G_GNUC_UNUSED)
1635 struct _WapiHandle_file file_handle = {0};
1637 int flags=convert_flags(fileaccess, createmode);
1638 /*mode_t perms=convert_perms(sharemode);*/
1639 /* we don't use sharemode, because that relates to sharing of
1640 * the file when the file is open and is already handled by
1641 * other code, perms instead are the on-disk permissions and
1642 * this is a sane default.
1647 MonoW32HandleType handle_type;
1648 struct stat statbuf;
1650 if (attrs & FILE_ATTRIBUTE_TEMPORARY)
1653 if (attrs & FILE_ATTRIBUTE_ENCRYPTED){
1654 SetLastError (ERROR_ENCRYPTION_FAILED);
1655 return INVALID_HANDLE_VALUE;
1659 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1661 SetLastError (ERROR_INVALID_NAME);
1662 return(INVALID_HANDLE_VALUE);
1665 filename = mono_unicode_to_external (name);
1666 if (filename == NULL) {
1667 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1669 SetLastError (ERROR_INVALID_NAME);
1670 return(INVALID_HANDLE_VALUE);
1673 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Opening %s with share 0x%x and access 0x%x", __func__,
1674 filename, sharemode, fileaccess);
1676 fd = _wapi_open (filename, flags, perms);
1678 /* If we were trying to open a directory with write permissions
1679 * (e.g. O_WRONLY or O_RDWR), this call will fail with
1680 * EISDIR. However, this is a bit bogus because calls to
1681 * manipulate the directory (e.g. SetFileTime) will still work on
1682 * the directory because they use other API calls
1683 * (e.g. utime()). Hence, if we failed with the EISDIR error, try
1684 * to open the directory again without write permission.
1686 if (fd == -1 && errno == EISDIR)
1688 /* Try again but don't try to make it writable */
1689 fd = _wapi_open (filename, flags & ~(O_RDWR|O_WRONLY), perms);
1693 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error opening file %s: %s", __func__, filename,
1695 _wapi_set_last_path_error_from_errno (NULL, filename);
1698 return(INVALID_HANDLE_VALUE);
1701 if (fd >= mono_w32handle_fd_reserve) {
1702 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
1704 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1709 return(INVALID_HANDLE_VALUE);
1712 ret = fstat (fd, &statbuf);
1714 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fstat error of file %s: %s", __func__,
1715 filename, strerror (errno));
1716 _wapi_set_last_error_from_errno ();
1720 return(INVALID_HANDLE_VALUE);
1722 #ifdef __native_client__
1723 /* Workaround: Native Client currently returns the same fake inode
1724 * for all files, so do a simple hash on the filename so we don't
1725 * use the same share info for each file.
1727 statbuf.st_ino = g_str_hash(filename);
1730 if (share_allows_open (&statbuf, sharemode, fileaccess,
1731 &file_handle.share_info) == FALSE) {
1732 SetLastError (ERROR_SHARING_VIOLATION);
1736 return (INVALID_HANDLE_VALUE);
1738 if (file_handle.share_info == NULL) {
1739 /* No space, so no more files can be opened */
1740 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: No space in the share table", __func__);
1742 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1746 return(INVALID_HANDLE_VALUE);
1749 file_handle.filename = filename;
1751 if(security!=NULL) {
1752 //file_handle->security_attributes=_wapi_handle_scratch_store (
1753 //security, sizeof(WapiSecurityAttributes));
1756 file_handle.fd = fd;
1757 file_handle.fileaccess=fileaccess;
1758 file_handle.sharemode=sharemode;
1759 file_handle.attrs=attrs;
1761 #ifdef HAVE_POSIX_FADVISE
1762 if (attrs & FILE_FLAG_SEQUENTIAL_SCAN)
1763 posix_fadvise (fd, 0, 0, POSIX_FADV_SEQUENTIAL);
1764 if (attrs & FILE_FLAG_RANDOM_ACCESS)
1765 posix_fadvise (fd, 0, 0, POSIX_FADV_RANDOM);
1769 #define S_ISFIFO(m) ((m & S_IFIFO) != 0)
1771 if (S_ISFIFO (statbuf.st_mode)) {
1772 handle_type = MONO_W32HANDLE_PIPE;
1773 /* maintain invariant that pipes have no filename */
1774 file_handle.filename = NULL;
1777 } else if (S_ISCHR (statbuf.st_mode)) {
1778 handle_type = MONO_W32HANDLE_CONSOLE;
1780 handle_type = MONO_W32HANDLE_FILE;
1783 handle = mono_w32handle_new_fd (handle_type, fd, &file_handle);
1784 if (handle == INVALID_HANDLE_VALUE) {
1785 g_warning ("%s: error creating file handle", __func__);
1789 SetLastError (ERROR_GEN_FAILURE);
1790 return(INVALID_HANDLE_VALUE);
1793 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: returning handle %p", __func__, handle);
1800 * @name: a pointer to a NULL-terminated unicode string, that names
1801 * the file to be deleted.
1803 * Deletes file @name.
1805 * Return value: %TRUE on success, %FALSE otherwise.
1807 gboolean DeleteFile(const gunichar2 *name)
1811 gboolean ret = FALSE;
1814 struct stat statbuf;
1815 struct _WapiFileShare *shareinfo;
1819 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1821 SetLastError (ERROR_INVALID_NAME);
1825 filename=mono_unicode_to_external(name);
1826 if(filename==NULL) {
1827 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1829 SetLastError (ERROR_INVALID_NAME);
1833 attrs = GetFileAttributes (name);
1834 if (attrs == INVALID_FILE_ATTRIBUTES) {
1835 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file attributes error", __func__);
1836 /* Error set by GetFileAttributes() */
1842 /* Check to make sure sharing allows us to open the file for
1843 * writing. See bug 323389.
1845 * Do the checks that don't need an open file descriptor, for
1846 * simplicity's sake. If we really have to do the full checks
1847 * then we can implement that later.
1849 if (_wapi_stat (filename, &statbuf) < 0) {
1850 _wapi_set_last_path_error_from_errno (NULL, filename);
1855 if (share_allows_open (&statbuf, 0, GENERIC_WRITE,
1856 &shareinfo) == FALSE) {
1857 SetLastError (ERROR_SHARING_VIOLATION);
1862 _wapi_handle_share_release (shareinfo);
1865 retval = _wapi_unlink (filename);
1868 _wapi_set_last_path_error_from_errno (NULL, filename);
1880 * @name: a pointer to a NULL-terminated unicode string, that names
1881 * the file to be moved.
1882 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
1883 * new name for the file.
1885 * Renames file @name to @dest_name.
1886 * MoveFile sets ERROR_ALREADY_EXISTS if the destination exists, except
1887 * when it is the same file as the source. In that case it silently succeeds.
1889 * Return value: %TRUE on success, %FALSE otherwise.
1891 gboolean MoveFile (const gunichar2 *name, const gunichar2 *dest_name)
1893 gchar *utf8_name, *utf8_dest_name;
1894 int result, errno_copy;
1895 struct stat stat_src, stat_dest;
1896 gboolean ret = FALSE;
1897 struct _WapiFileShare *shareinfo;
1900 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1902 SetLastError (ERROR_INVALID_NAME);
1906 utf8_name = mono_unicode_to_external (name);
1907 if (utf8_name == NULL) {
1908 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1910 SetLastError (ERROR_INVALID_NAME);
1914 if(dest_name==NULL) {
1915 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1918 SetLastError (ERROR_INVALID_NAME);
1922 utf8_dest_name = mono_unicode_to_external (dest_name);
1923 if (utf8_dest_name == NULL) {
1924 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1927 SetLastError (ERROR_INVALID_NAME);
1932 * In C# land we check for the existence of src, but not for dest.
1933 * We check it here and return the failure if dest exists and is not
1934 * the same file as src.
1936 if (_wapi_stat (utf8_name, &stat_src) < 0) {
1937 if (errno != ENOENT || _wapi_lstat (utf8_name, &stat_src) < 0) {
1938 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
1940 g_free (utf8_dest_name);
1945 if (!_wapi_stat (utf8_dest_name, &stat_dest)) {
1946 if (stat_dest.st_dev != stat_src.st_dev ||
1947 stat_dest.st_ino != stat_src.st_ino) {
1949 g_free (utf8_dest_name);
1950 SetLastError (ERROR_ALREADY_EXISTS);
1955 /* Check to make that we have delete sharing permission.
1956 * See https://bugzilla.xamarin.com/show_bug.cgi?id=17009
1958 * Do the checks that don't need an open file descriptor, for
1959 * simplicity's sake. If we really have to do the full checks
1960 * then we can implement that later.
1962 if (share_allows_delete (&stat_src, &shareinfo) == FALSE) {
1963 SetLastError (ERROR_SHARING_VIOLATION);
1967 _wapi_handle_share_release (shareinfo);
1969 result = _wapi_rename (utf8_name, utf8_dest_name);
1973 switch(errno_copy) {
1975 SetLastError (ERROR_ALREADY_EXISTS);
1979 /* Ignore here, it is dealt with below */
1983 /* We already know src exists. Must be dest that doesn't exist. */
1984 _wapi_set_last_path_error_from_errno (NULL, utf8_dest_name);
1988 _wapi_set_last_error_from_errno ();
1993 g_free (utf8_dest_name);
1995 if (result != 0 && errno_copy == EXDEV) {
1996 if (S_ISDIR (stat_src.st_mode)) {
1997 SetLastError (ERROR_NOT_SAME_DEVICE);
2000 /* Try a copy to the new location, and delete the source */
2001 if (CopyFile (name, dest_name, TRUE)==FALSE) {
2002 /* CopyFile will set the error */
2006 return(DeleteFile (name));
2017 write_file (int src_fd, int dest_fd, struct stat *st_src, gboolean report_errors)
2021 int buf_size = st_src->st_blksize;
2022 MonoThreadInfo *info = mono_thread_info_current ();
2024 buf_size = buf_size < 8192 ? 8192 : (buf_size > 65536 ? 65536 : buf_size);
2025 buf = (char *) g_malloc (buf_size);
2028 remain = read (src_fd, buf, buf_size);
2030 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2034 _wapi_set_last_error_from_errno ();
2044 while (remain > 0) {
2045 if ((n = write (dest_fd, wbuf, remain)) < 0) {
2046 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2050 _wapi_set_last_error_from_errno ();
2051 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write failed.", __func__);
2067 * @name: a pointer to a NULL-terminated unicode string, that names
2068 * the file to be copied.
2069 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
2070 * new name for the file.
2071 * @fail_if_exists: if TRUE and dest_name exists, the copy will fail.
2073 * Copies file @name to @dest_name
2075 * Return value: %TRUE on success, %FALSE otherwise.
2077 gboolean CopyFile (const gunichar2 *name, const gunichar2 *dest_name,
2078 gboolean fail_if_exists)
2080 gchar *utf8_src, *utf8_dest;
2081 int src_fd, dest_fd;
2082 struct stat st, dest_st;
2083 struct utimbuf dest_time;
2084 gboolean ret = TRUE;
2088 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
2090 SetLastError (ERROR_INVALID_NAME);
2094 utf8_src = mono_unicode_to_external (name);
2095 if (utf8_src == NULL) {
2096 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of source returned NULL",
2099 SetLastError (ERROR_INVALID_PARAMETER);
2103 if(dest_name==NULL) {
2104 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: dest is NULL", __func__);
2107 SetLastError (ERROR_INVALID_NAME);
2111 utf8_dest = mono_unicode_to_external (dest_name);
2112 if (utf8_dest == NULL) {
2113 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of dest returned NULL",
2116 SetLastError (ERROR_INVALID_PARAMETER);
2123 src_fd = _wapi_open (utf8_src, O_RDONLY, 0);
2125 _wapi_set_last_path_error_from_errno (NULL, utf8_src);
2133 if (fstat (src_fd, &st) < 0) {
2134 _wapi_set_last_error_from_errno ();
2143 /* Before trying to open/create the dest, we need to report a 'file busy'
2144 * error if src and dest are actually the same file. We do the check here to take
2145 * advantage of the IOMAP capability */
2146 if (!_wapi_stat (utf8_dest, &dest_st) && st.st_dev == dest_st.st_dev &&
2147 st.st_ino == dest_st.st_ino) {
2153 SetLastError (ERROR_SHARING_VIOLATION);
2157 if (fail_if_exists) {
2158 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_EXCL, st.st_mode);
2160 /* FIXME: it kinda sucks that this code path potentially scans
2161 * the directory twice due to the weird SetLastError()
2163 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_TRUNC, st.st_mode);
2165 /* The file does not exist, try creating it */
2166 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_TRUNC, st.st_mode);
2168 /* Apparently this error is set if we
2169 * overwrite the dest file
2171 SetLastError (ERROR_ALREADY_EXISTS);
2175 _wapi_set_last_error_from_errno ();
2184 if (!write_file (src_fd, dest_fd, &st, TRUE))
2190 dest_time.modtime = st.st_mtime;
2191 dest_time.actime = st.st_atime;
2192 ret_utime = utime (utf8_dest, &dest_time);
2193 if (ret_utime == -1)
2194 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file [%s] utime failed: %s", __func__, utf8_dest, strerror(errno));
2203 convert_arg_to_utf8 (const gunichar2 *arg, const gchar *arg_name)
2208 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: %s is NULL", __func__, arg_name);
2209 SetLastError (ERROR_INVALID_NAME);
2213 utf8_ret = mono_unicode_to_external (arg);
2214 if (utf8_ret == NULL) {
2215 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of %s returned NULL",
2216 __func__, arg_name);
2217 SetLastError (ERROR_INVALID_PARAMETER);
2225 ReplaceFile (const gunichar2 *replacedFileName, const gunichar2 *replacementFileName,
2226 const gunichar2 *backupFileName, guint32 replaceFlags,
2227 gpointer exclude, gpointer reserved)
2229 int result, backup_fd = -1,replaced_fd = -1;
2230 gchar *utf8_replacedFileName, *utf8_replacementFileName = NULL, *utf8_backupFileName = NULL;
2231 struct stat stBackup;
2232 gboolean ret = FALSE;
2234 if (!(utf8_replacedFileName = convert_arg_to_utf8 (replacedFileName, "replacedFileName")))
2236 if (!(utf8_replacementFileName = convert_arg_to_utf8 (replacementFileName, "replacementFileName")))
2237 goto replace_cleanup;
2238 if (backupFileName != NULL) {
2239 if (!(utf8_backupFileName = convert_arg_to_utf8 (backupFileName, "backupFileName")))
2240 goto replace_cleanup;
2243 if (utf8_backupFileName) {
2244 // Open the backup file for read so we can restore the file if an error occurs.
2245 backup_fd = _wapi_open (utf8_backupFileName, O_RDONLY, 0);
2246 result = _wapi_rename (utf8_replacedFileName, utf8_backupFileName);
2248 goto replace_cleanup;
2251 result = _wapi_rename (utf8_replacementFileName, utf8_replacedFileName);
2253 _wapi_set_last_path_error_from_errno (NULL, utf8_replacementFileName);
2254 _wapi_rename (utf8_backupFileName, utf8_replacedFileName);
2255 if (backup_fd != -1 && !fstat (backup_fd, &stBackup)) {
2256 replaced_fd = _wapi_open (utf8_backupFileName, O_WRONLY | O_CREAT | O_TRUNC,
2259 if (replaced_fd == -1)
2260 goto replace_cleanup;
2262 write_file (backup_fd, replaced_fd, &stBackup, FALSE);
2265 goto replace_cleanup;
2271 g_free (utf8_replacedFileName);
2272 g_free (utf8_replacementFileName);
2273 g_free (utf8_backupFileName);
2274 if (backup_fd != -1)
2276 if (replaced_fd != -1)
2277 close (replaced_fd);
2283 * @stdhandle: specifies the file descriptor
2285 * Returns a handle for stdin, stdout, or stderr. Always returns the
2286 * same handle for the same @stdhandle.
2288 * Return value: the handle, or %INVALID_HANDLE_VALUE on error
2291 static mono_mutex_t stdhandle_mutex;
2293 gpointer GetStdHandle(WapiStdHandle stdhandle)
2295 struct _WapiHandle_file *file_handle;
2302 case STD_INPUT_HANDLE:
2307 case STD_OUTPUT_HANDLE:
2312 case STD_ERROR_HANDLE:
2318 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unknown standard handle type", __func__);
2320 SetLastError (ERROR_INVALID_PARAMETER);
2321 return(INVALID_HANDLE_VALUE);
2324 handle = GINT_TO_POINTER (fd);
2326 mono_os_mutex_lock (&stdhandle_mutex);
2328 ok = mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
2329 (gpointer *)&file_handle);
2331 /* Need to create this console handle */
2332 handle = _wapi_stdhandle_create (fd, name);
2334 if (handle == INVALID_HANDLE_VALUE) {
2335 SetLastError (ERROR_NO_MORE_FILES);
2339 /* Add a reference to this handle */
2340 mono_w32handle_ref (handle);
2344 mono_os_mutex_unlock (&stdhandle_mutex);
2351 * @handle: The file handle to read from. The handle must have
2352 * %GENERIC_READ access.
2353 * @buffer: The buffer to store read data in
2354 * @numbytes: The maximum number of bytes to read
2355 * @bytesread: The actual number of bytes read is stored here. This
2356 * value can be zero if the handle is positioned at the end of the
2358 * @overlapped: points to a required %WapiOverlapped structure if
2359 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2362 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2363 * function reads up to @numbytes bytes from the file from the current
2364 * file position, and stores them in @buffer. If there are not enough
2365 * bytes left in the file, just the amount available will be read.
2366 * The actual number of bytes read is stored in @bytesread.
2368 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2369 * file position is ignored and the read position is taken from data
2370 * in the @overlapped structure.
2372 * Return value: %TRUE if the read succeeds (even if no bytes were
2373 * read due to an attempt to read past the end of the file), %FALSE on
2376 gboolean ReadFile(gpointer handle, gpointer buffer, guint32 numbytes,
2377 guint32 *bytesread, WapiOverlapped *overlapped)
2379 MonoW32HandleType type;
2381 type = mono_w32handle_get_type (handle);
2383 if(io_ops[type].readfile==NULL) {
2384 SetLastError (ERROR_INVALID_HANDLE);
2388 return(io_ops[type].readfile (handle, buffer, numbytes, bytesread,
2394 * @handle: The file handle to write to. The handle must have
2395 * %GENERIC_WRITE access.
2396 * @buffer: The buffer to read data from.
2397 * @numbytes: The maximum number of bytes to write.
2398 * @byteswritten: The actual number of bytes written is stored here.
2399 * If the handle is positioned at the file end, the length of the file
2400 * is extended. This parameter may be %NULL.
2401 * @overlapped: points to a required %WapiOverlapped structure if
2402 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2405 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2406 * function writes up to @numbytes bytes from @buffer to the file at
2407 * the current file position. If @handle is positioned at the end of
2408 * the file, the file is extended. The actual number of bytes written
2409 * is stored in @byteswritten.
2411 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2412 * file position is ignored and the write position is taken from data
2413 * in the @overlapped structure.
2415 * Return value: %TRUE if the write succeeds, %FALSE on error.
2417 gboolean WriteFile(gpointer handle, gconstpointer buffer, guint32 numbytes,
2418 guint32 *byteswritten, WapiOverlapped *overlapped)
2420 MonoW32HandleType type;
2422 type = mono_w32handle_get_type (handle);
2424 if(io_ops[type].writefile==NULL) {
2425 SetLastError (ERROR_INVALID_HANDLE);
2429 return(io_ops[type].writefile (handle, buffer, numbytes, byteswritten,
2435 * @handle: Handle to open file. The handle must have
2436 * %GENERIC_WRITE access.
2438 * Flushes buffers of the file and causes all unwritten data to
2441 * Return value: %TRUE on success, %FALSE otherwise.
2443 gboolean FlushFileBuffers(gpointer handle)
2445 MonoW32HandleType type;
2447 type = mono_w32handle_get_type (handle);
2449 if(io_ops[type].flushfile==NULL) {
2450 SetLastError (ERROR_INVALID_HANDLE);
2454 return(io_ops[type].flushfile (handle));
2459 * @handle: The file handle to set. The handle must have
2460 * %GENERIC_WRITE access.
2462 * Moves the end-of-file position to the current position of the file
2463 * pointer. This function is used to truncate or extend a file.
2465 * Return value: %TRUE on success, %FALSE otherwise.
2467 gboolean SetEndOfFile(gpointer handle)
2469 MonoW32HandleType type;
2471 type = mono_w32handle_get_type (handle);
2473 if (io_ops[type].setendoffile == NULL) {
2474 SetLastError (ERROR_INVALID_HANDLE);
2478 return(io_ops[type].setendoffile (handle));
2483 * @handle: The file handle to set. The handle must have
2484 * %GENERIC_READ or %GENERIC_WRITE access.
2485 * @movedistance: Low 32 bits of a signed value that specifies the
2486 * number of bytes to move the file pointer.
2487 * @highmovedistance: Pointer to the high 32 bits of a signed value
2488 * that specifies the number of bytes to move the file pointer, or
2490 * @method: The starting point for the file pointer move.
2492 * Sets the file pointer of an open file.
2494 * The distance to move the file pointer is calculated from
2495 * @movedistance and @highmovedistance: If @highmovedistance is %NULL,
2496 * @movedistance is the 32-bit signed value; otherwise, @movedistance
2497 * is the low 32 bits and @highmovedistance a pointer to the high 32
2498 * bits of a 64 bit signed value. A positive distance moves the file
2499 * pointer forward from the position specified by @method; a negative
2500 * distance moves the file pointer backward.
2502 * If the library is compiled without large file support,
2503 * @highmovedistance is ignored and its value is set to zero on a
2504 * successful return.
2506 * Return value: On success, the low 32 bits of the new file pointer.
2507 * If @highmovedistance is not %NULL, the high 32 bits of the new file
2508 * pointer are stored there. On failure, %INVALID_SET_FILE_POINTER.
2510 guint32 SetFilePointer(gpointer handle, gint32 movedistance,
2511 gint32 *highmovedistance, WapiSeekMethod method)
2513 MonoW32HandleType type;
2515 type = mono_w32handle_get_type (handle);
2517 if (io_ops[type].seek == NULL) {
2518 SetLastError (ERROR_INVALID_HANDLE);
2519 return(INVALID_SET_FILE_POINTER);
2522 return(io_ops[type].seek (handle, movedistance, highmovedistance,
2528 * @handle: The file handle to test.
2530 * Finds the type of file @handle.
2532 * Return value: %FILE_TYPE_UNKNOWN - the type of the file @handle is
2533 * unknown. %FILE_TYPE_DISK - @handle is a disk file.
2534 * %FILE_TYPE_CHAR - @handle is a character device, such as a console.
2535 * %FILE_TYPE_PIPE - @handle is a named or anonymous pipe.
2537 WapiFileType GetFileType(gpointer handle)
2539 MonoW32HandleType type;
2541 type = mono_w32handle_get_type (handle);
2543 if (io_ops[type].getfiletype == NULL) {
2544 SetLastError (ERROR_INVALID_HANDLE);
2545 return(FILE_TYPE_UNKNOWN);
2548 return(io_ops[type].getfiletype ());
2553 * @handle: The file handle to query. The handle must have
2554 * %GENERIC_READ or %GENERIC_WRITE access.
2555 * @highsize: If non-%NULL, the high 32 bits of the file size are
2558 * Retrieves the size of the file @handle.
2560 * If the library is compiled without large file support, @highsize
2561 * has its value set to zero on a successful return.
2563 * Return value: On success, the low 32 bits of the file size. If
2564 * @highsize is non-%NULL then the high 32 bits of the file size are
2565 * stored here. On failure %INVALID_FILE_SIZE is returned.
2567 guint32 GetFileSize(gpointer handle, guint32 *highsize)
2569 MonoW32HandleType type;
2571 type = mono_w32handle_get_type (handle);
2573 if (io_ops[type].getfilesize == NULL) {
2574 SetLastError (ERROR_INVALID_HANDLE);
2575 return(INVALID_FILE_SIZE);
2578 return(io_ops[type].getfilesize (handle, highsize));
2583 * @handle: The file handle to query. The handle must have
2584 * %GENERIC_READ access.
2585 * @create_time: Points to a %WapiFileTime structure to receive the
2586 * number of ticks since the epoch that file was created. May be
2588 * @last_access: Points to a %WapiFileTime structure to receive the
2589 * number of ticks since the epoch when file was last accessed. May be
2591 * @last_write: Points to a %WapiFileTime structure to receive the
2592 * number of ticks since the epoch when file was last written to. May
2595 * Finds the number of ticks since the epoch that the file referenced
2596 * by @handle was created, last accessed and last modified. A tick is
2597 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2600 * Create time isn't recorded on POSIX file systems or reported by
2601 * stat(2), so that time is guessed by returning the oldest of the
2604 * Return value: %TRUE on success, %FALSE otherwise.
2606 gboolean GetFileTime(gpointer handle, WapiFileTime *create_time,
2607 WapiFileTime *last_access, WapiFileTime *last_write)
2609 MonoW32HandleType type;
2611 type = mono_w32handle_get_type (handle);
2613 if (io_ops[type].getfiletime == NULL) {
2614 SetLastError (ERROR_INVALID_HANDLE);
2618 return(io_ops[type].getfiletime (handle, create_time, last_access,
2624 * @handle: The file handle to set. The handle must have
2625 * %GENERIC_WRITE access.
2626 * @create_time: Points to a %WapiFileTime structure that contains the
2627 * number of ticks since the epoch that the file was created. May be
2629 * @last_access: Points to a %WapiFileTime structure that contains the
2630 * number of ticks since the epoch when the file was last accessed.
2632 * @last_write: Points to a %WapiFileTime structure that contains the
2633 * number of ticks since the epoch when the file was last written to.
2636 * Sets the number of ticks since the epoch that the file referenced
2637 * by @handle was created, last accessed or last modified. A tick is
2638 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2641 * Create time isn't recorded on POSIX file systems, and is ignored.
2643 * Return value: %TRUE on success, %FALSE otherwise.
2645 gboolean SetFileTime(gpointer handle, const WapiFileTime *create_time,
2646 const WapiFileTime *last_access,
2647 const WapiFileTime *last_write)
2649 MonoW32HandleType type;
2651 type = mono_w32handle_get_type (handle);
2653 if (io_ops[type].setfiletime == NULL) {
2654 SetLastError (ERROR_INVALID_HANDLE);
2658 return(io_ops[type].setfiletime (handle, create_time, last_access,
2662 /* A tick is a 100-nanosecond interval. File time epoch is Midnight,
2663 * January 1 1601 GMT
2666 #define TICKS_PER_MILLISECOND 10000L
2667 #define TICKS_PER_SECOND 10000000L
2668 #define TICKS_PER_MINUTE 600000000L
2669 #define TICKS_PER_HOUR 36000000000LL
2670 #define TICKS_PER_DAY 864000000000LL
2672 #define isleap(y) ((y) % 4 == 0 && ((y) % 100 != 0 || (y) % 400 == 0))
2674 static const guint16 mon_yday[2][13]={
2675 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
2676 {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
2680 * FileTimeToSystemTime:
2681 * @file_time: Points to a %WapiFileTime structure that contains the
2682 * number of ticks to convert.
2683 * @system_time: Points to a %WapiSystemTime structure to receive the
2686 * Converts a tick count into broken-out time values.
2688 * Return value: %TRUE on success, %FALSE otherwise.
2690 gboolean FileTimeToSystemTime(const WapiFileTime *file_time,
2691 WapiSystemTime *system_time)
2693 gint64 file_ticks, totaldays, rem, y;
2696 if(system_time==NULL) {
2697 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: system_time NULL", __func__);
2699 SetLastError (ERROR_INVALID_PARAMETER);
2703 file_ticks=((gint64)file_time->dwHighDateTime << 32) +
2704 file_time->dwLowDateTime;
2706 /* Really compares if file_ticks>=0x8000000000000000
2707 * (LLONG_MAX+1) but we're working with a signed value for the
2708 * year and day calculation to work later
2711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file_time too big", __func__);
2713 SetLastError (ERROR_INVALID_PARAMETER);
2717 totaldays=(file_ticks / TICKS_PER_DAY);
2718 rem = file_ticks % TICKS_PER_DAY;
2719 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld rem: %lld", __func__, totaldays, rem);
2721 system_time->wHour=rem/TICKS_PER_HOUR;
2722 rem %= TICKS_PER_HOUR;
2723 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Hour: %d rem: %lld", __func__, system_time->wHour, rem);
2725 system_time->wMinute = rem / TICKS_PER_MINUTE;
2726 rem %= TICKS_PER_MINUTE;
2727 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Minute: %d rem: %lld", __func__, system_time->wMinute,
2730 system_time->wSecond = rem / TICKS_PER_SECOND;
2731 rem %= TICKS_PER_SECOND;
2732 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Second: %d rem: %lld", __func__, system_time->wSecond,
2735 system_time->wMilliseconds = rem / TICKS_PER_MILLISECOND;
2736 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Milliseconds: %d", __func__,
2737 system_time->wMilliseconds);
2739 /* January 1, 1601 was a Monday, according to Emacs calendar */
2740 system_time->wDayOfWeek = ((1 + totaldays) % 7) + 1;
2741 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day of week: %d", __func__, system_time->wDayOfWeek);
2743 /* This algorithm to find year and month given days from epoch
2748 #define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
2749 #define LEAPS_THRU_END_OF(y) (DIV(y, 4) - DIV (y, 100) + DIV (y, 400))
2751 while(totaldays < 0 || totaldays >= (isleap(y)?366:365)) {
2752 /* Guess a corrected year, assuming 365 days per year */
2753 gint64 yg = y + totaldays / 365 - (totaldays % 365 < 0);
2754 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld yg: %lld y: %lld", __func__,
2757 g_message("%s: LEAPS(yg): %lld LEAPS(y): %lld", __func__,
2758 LEAPS_THRU_END_OF(yg-1), LEAPS_THRU_END_OF(y-1));
2760 /* Adjust days and y to match the guessed year. */
2761 totaldays -= ((yg - y) * 365
2762 + LEAPS_THRU_END_OF (yg - 1)
2763 - LEAPS_THRU_END_OF (y - 1));
2764 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2766 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: y: %lld", __func__, y);
2769 system_time->wYear = y;
2770 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Year: %d", __func__, system_time->wYear);
2772 ip = mon_yday[isleap(y)];
2774 for(y=11; totaldays < ip[y]; --y) {
2778 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2780 system_time->wMonth = y + 1;
2781 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Month: %d", __func__, system_time->wMonth);
2783 system_time->wDay = totaldays + 1;
2784 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day: %d", __func__, system_time->wDay);
2789 gpointer FindFirstFile (const gunichar2 *pattern, WapiFindData *find_data)
2791 struct _WapiHandle_find find_handle = {0};
2793 gchar *utf8_pattern = NULL, *dir_part, *entry_part;
2796 if (pattern == NULL) {
2797 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: pattern is NULL", __func__);
2799 SetLastError (ERROR_PATH_NOT_FOUND);
2800 return(INVALID_HANDLE_VALUE);
2803 utf8_pattern = mono_unicode_to_external (pattern);
2804 if (utf8_pattern == NULL) {
2805 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
2807 SetLastError (ERROR_INVALID_NAME);
2808 return(INVALID_HANDLE_VALUE);
2811 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: looking for [%s]", __func__, utf8_pattern);
2813 /* Figure out which bit of the pattern is the directory */
2814 dir_part = _wapi_dirname (utf8_pattern);
2815 entry_part = _wapi_basename (utf8_pattern);
2818 /* Don't do this check for now, it breaks if directories
2819 * really do have metachars in their names (see bug 58116).
2820 * FIXME: Figure out a better solution to keep some checks...
2822 if (strchr (dir_part, '*') || strchr (dir_part, '?')) {
2823 SetLastError (ERROR_INVALID_NAME);
2825 g_free (entry_part);
2826 g_free (utf8_pattern);
2827 return(INVALID_HANDLE_VALUE);
2831 /* The pattern can specify a directory or a set of files.
2833 * The pattern can have wildcard characters ? and *, but only
2834 * in the section after the last directory delimiter. (Return
2835 * ERROR_INVALID_NAME if there are wildcards in earlier path
2836 * sections.) "*" has the usual 0-or-more chars meaning. "?"
2837 * means "match one character", "??" seems to mean "match one
2838 * or two characters", "???" seems to mean "match one, two or
2839 * three characters", etc. Windows will also try and match
2840 * the mangled "short name" of files, so 8 character patterns
2841 * with wildcards will show some surprising results.
2843 * All the written documentation I can find says that '?'
2844 * should only match one character, and doesn't mention '??',
2845 * '???' etc. I'm going to assume that the strict behaviour
2846 * (ie '???' means three and only three characters) is the
2847 * correct one, because that lets me use fnmatch(3) rather
2848 * than mess around with regexes.
2851 find_handle.namelist = NULL;
2852 result = _wapi_io_scandir (dir_part, entry_part,
2853 &find_handle.namelist);
2856 /* No files, which windows seems to call
2859 SetLastError (ERROR_FILE_NOT_FOUND);
2860 g_free (utf8_pattern);
2861 g_free (entry_part);
2863 return (INVALID_HANDLE_VALUE);
2867 _wapi_set_last_path_error_from_errno (dir_part, NULL);
2868 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: scandir error: %s", __func__, g_strerror (errno));
2869 g_free (utf8_pattern);
2870 g_free (entry_part);
2872 return (INVALID_HANDLE_VALUE);
2875 g_free (utf8_pattern);
2876 g_free (entry_part);
2878 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Got %d matches", __func__, result);
2880 find_handle.dir_part = dir_part;
2881 find_handle.num = result;
2882 find_handle.count = 0;
2884 handle = mono_w32handle_new (MONO_W32HANDLE_FIND, &find_handle);
2885 if (handle == INVALID_HANDLE_VALUE) {
2886 g_warning ("%s: error creating find handle", __func__);
2888 g_free (entry_part);
2889 g_free (utf8_pattern);
2890 SetLastError (ERROR_GEN_FAILURE);
2892 return(INVALID_HANDLE_VALUE);
2895 if (handle != INVALID_HANDLE_VALUE &&
2896 !FindNextFile (handle, find_data)) {
2898 SetLastError (ERROR_NO_MORE_FILES);
2899 handle = INVALID_HANDLE_VALUE;
2905 gboolean FindNextFile (gpointer handle, WapiFindData *find_data)
2907 struct _WapiHandle_find *find_handle;
2909 struct stat buf, linkbuf;
2912 gchar *utf8_filename, *utf8_basename;
2913 gunichar2 *utf16_basename;
2917 gboolean ret = FALSE;
2919 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
2920 (gpointer *)&find_handle);
2922 g_warning ("%s: error looking up find handle %p", __func__,
2924 SetLastError (ERROR_INVALID_HANDLE);
2928 thr_ret = mono_w32handle_lock_handle (handle);
2929 g_assert (thr_ret == 0);
2932 if (find_handle->count >= find_handle->num) {
2933 SetLastError (ERROR_NO_MORE_FILES);
2937 /* stat next match */
2939 filename = g_build_filename (find_handle->dir_part, find_handle->namelist[find_handle->count ++], NULL);
2941 result = _wapi_stat (filename, &buf);
2942 if (result == -1 && errno == ENOENT) {
2943 /* Might be a dangling symlink */
2944 result = _wapi_lstat (filename, &buf);
2948 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: stat failed: %s", __func__, filename);
2954 #ifndef __native_client__
2955 result = _wapi_lstat (filename, &linkbuf);
2957 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lstat failed: %s", __func__, filename);
2964 utf8_filename = mono_utf8_from_external (filename);
2965 if (utf8_filename == NULL) {
2966 /* We couldn't turn this filename into utf8 (eg the
2967 * encoding of the name wasn't convertible), so just
2970 g_warning ("%s: Bad encoding for '%s'\nConsider using MONO_EXTERNAL_ENCODINGS\n", __func__, filename);
2977 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Found [%s]", __func__, utf8_filename);
2979 /* fill data block */
2981 if (buf.st_mtime < buf.st_ctime)
2982 create_time = buf.st_mtime;
2984 create_time = buf.st_ctime;
2986 #ifdef __native_client__
2987 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, NULL);
2989 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, &linkbuf);
2992 _wapi_time_t_to_filetime (create_time, &find_data->ftCreationTime);
2993 _wapi_time_t_to_filetime (buf.st_atime, &find_data->ftLastAccessTime);
2994 _wapi_time_t_to_filetime (buf.st_mtime, &find_data->ftLastWriteTime);
2996 if (find_data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
2997 find_data->nFileSizeHigh = 0;
2998 find_data->nFileSizeLow = 0;
3000 find_data->nFileSizeHigh = buf.st_size >> 32;
3001 find_data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3004 find_data->dwReserved0 = 0;
3005 find_data->dwReserved1 = 0;
3007 utf8_basename = _wapi_basename (utf8_filename);
3008 utf16_basename = g_utf8_to_utf16 (utf8_basename, -1, NULL, &bytes,
3010 if(utf16_basename==NULL) {
3011 g_free (utf8_basename);
3012 g_free (utf8_filename);
3017 /* utf16 is 2 * utf8 */
3020 memset (find_data->cFileName, '\0', (MAX_PATH*2));
3022 /* Truncating a utf16 string like this might leave the last
3025 memcpy (find_data->cFileName, utf16_basename,
3026 bytes<(MAX_PATH*2)-2?bytes:(MAX_PATH*2)-2);
3028 find_data->cAlternateFileName [0] = 0; /* not used */
3030 g_free (utf8_basename);
3031 g_free (utf8_filename);
3032 g_free (utf16_basename);
3035 thr_ret = mono_w32handle_unlock_handle (handle);
3036 g_assert (thr_ret == 0);
3043 * @wapi_handle: the find handle to close.
3045 * Closes find handle @wapi_handle
3047 * Return value: %TRUE on success, %FALSE otherwise.
3049 gboolean FindClose (gpointer handle)
3051 struct _WapiHandle_find *find_handle;
3055 if (handle == NULL) {
3056 SetLastError (ERROR_INVALID_HANDLE);
3060 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
3061 (gpointer *)&find_handle);
3063 g_warning ("%s: error looking up find handle %p", __func__,
3065 SetLastError (ERROR_INVALID_HANDLE);
3069 thr_ret = mono_w32handle_lock_handle (handle);
3070 g_assert (thr_ret == 0);
3072 g_strfreev (find_handle->namelist);
3073 g_free (find_handle->dir_part);
3075 thr_ret = mono_w32handle_unlock_handle (handle);
3076 g_assert (thr_ret == 0);
3078 mono_w32handle_unref (handle);
3085 * @name: a pointer to a NULL-terminated unicode string, that names
3086 * the directory to be created.
3087 * @security: ignored for now
3089 * Creates directory @name
3091 * Return value: %TRUE on success, %FALSE otherwise.
3093 gboolean CreateDirectory (const gunichar2 *name,
3094 WapiSecurityAttributes *security)
3100 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3102 SetLastError (ERROR_INVALID_NAME);
3106 utf8_name = mono_unicode_to_external (name);
3107 if (utf8_name == NULL) {
3108 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3110 SetLastError (ERROR_INVALID_NAME);
3114 result = _wapi_mkdir (utf8_name, 0777);
3121 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3128 * @name: a pointer to a NULL-terminated unicode string, that names
3129 * the directory to be removed.
3131 * Removes directory @name
3133 * Return value: %TRUE on success, %FALSE otherwise.
3135 gboolean RemoveDirectory (const gunichar2 *name)
3141 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3143 SetLastError (ERROR_INVALID_NAME);
3147 utf8_name = mono_unicode_to_external (name);
3148 if (utf8_name == NULL) {
3149 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3151 SetLastError (ERROR_INVALID_NAME);
3155 result = _wapi_rmdir (utf8_name);
3157 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3168 * GetFileAttributes:
3169 * @name: a pointer to a NULL-terminated unicode filename.
3171 * Gets the attributes for @name;
3173 * Return value: %INVALID_FILE_ATTRIBUTES on failure
3175 guint32 GetFileAttributes (const gunichar2 *name)
3178 struct stat buf, linkbuf;
3183 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3185 SetLastError (ERROR_INVALID_NAME);
3189 utf8_name = mono_unicode_to_external (name);
3190 if (utf8_name == NULL) {
3191 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3193 SetLastError (ERROR_INVALID_PARAMETER);
3194 return (INVALID_FILE_ATTRIBUTES);
3197 result = _wapi_stat (utf8_name, &buf);
3198 if (result == -1 && errno == ENOENT) {
3199 /* Might be a dangling symlink... */
3200 result = _wapi_lstat (utf8_name, &buf);
3204 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3206 return (INVALID_FILE_ATTRIBUTES);
3209 #ifndef __native_client__
3210 result = _wapi_lstat (utf8_name, &linkbuf);
3212 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3214 return (INVALID_FILE_ATTRIBUTES);
3218 #ifdef __native_client__
3219 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, NULL);
3221 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, &linkbuf);
3230 * GetFileAttributesEx:
3231 * @name: a pointer to a NULL-terminated unicode filename.
3232 * @level: must be GetFileExInfoStandard
3233 * @info: pointer to a WapiFileAttributesData structure
3235 * Gets attributes, size and filetimes for @name;
3237 * Return value: %TRUE on success, %FALSE on failure
3239 gboolean GetFileAttributesEx (const gunichar2 *name, WapiGetFileExInfoLevels level, gpointer info)
3242 WapiFileAttributesData *data;
3244 struct stat buf, linkbuf;
3248 if (level != GetFileExInfoStandard) {
3249 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: info level %d not supported.", __func__,
3252 SetLastError (ERROR_INVALID_PARAMETER);
3257 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3259 SetLastError (ERROR_INVALID_NAME);
3263 utf8_name = mono_unicode_to_external (name);
3264 if (utf8_name == NULL) {
3265 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3267 SetLastError (ERROR_INVALID_PARAMETER);
3271 result = _wapi_stat (utf8_name, &buf);
3272 if (result == -1 && errno == ENOENT) {
3273 /* Might be a dangling symlink... */
3274 result = _wapi_lstat (utf8_name, &buf);
3278 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3283 result = _wapi_lstat (utf8_name, &linkbuf);
3285 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3290 /* fill data block */
3292 data = (WapiFileAttributesData *)info;
3294 if (buf.st_mtime < buf.st_ctime)
3295 create_time = buf.st_mtime;
3297 create_time = buf.st_ctime;
3299 data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_name,
3305 _wapi_time_t_to_filetime (create_time, &data->ftCreationTime);
3306 _wapi_time_t_to_filetime (buf.st_atime, &data->ftLastAccessTime);
3307 _wapi_time_t_to_filetime (buf.st_mtime, &data->ftLastWriteTime);
3309 if (data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
3310 data->nFileSizeHigh = 0;
3311 data->nFileSizeLow = 0;
3314 data->nFileSizeHigh = buf.st_size >> 32;
3315 data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3323 * @name: name of file
3324 * @attrs: attributes to set
3326 * Changes the attributes on a named file.
3328 * Return value: %TRUE on success, %FALSE on failure.
3330 extern gboolean SetFileAttributes (const gunichar2 *name, guint32 attrs)
3332 /* FIXME: think of something clever to do on unix */
3338 * Currently we only handle one *internal* case, with a value that is
3339 * not standard: 0x80000000, which means `set executable bit'
3343 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3345 SetLastError (ERROR_INVALID_NAME);
3349 utf8_name = mono_unicode_to_external (name);
3350 if (utf8_name == NULL) {
3351 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3353 SetLastError (ERROR_INVALID_NAME);
3357 result = _wapi_stat (utf8_name, &buf);
3358 if (result == -1 && errno == ENOENT) {
3359 /* Might be a dangling symlink... */
3360 result = _wapi_lstat (utf8_name, &buf);
3364 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3369 /* Contrary to the documentation, ms allows NORMAL to be
3370 * specified along with other attributes, so dont bother to
3371 * catch that case here.
3373 if (attrs & FILE_ATTRIBUTE_READONLY) {
3374 result = _wapi_chmod (utf8_name, buf.st_mode & ~(S_IWUSR | S_IWOTH | S_IWGRP));
3376 result = _wapi_chmod (utf8_name, buf.st_mode | S_IWUSR);
3379 /* Ignore the other attributes for now */
3381 if (attrs & 0x80000000){
3382 mode_t exec_mask = 0;
3384 if ((buf.st_mode & S_IRUSR) != 0)
3385 exec_mask |= S_IXUSR;
3387 if ((buf.st_mode & S_IRGRP) != 0)
3388 exec_mask |= S_IXGRP;
3390 if ((buf.st_mode & S_IROTH) != 0)
3391 exec_mask |= S_IXOTH;
3393 result = chmod (utf8_name, buf.st_mode | exec_mask);
3395 /* Don't bother to reset executable (might need to change this
3405 * GetCurrentDirectory
3406 * @length: size of the buffer
3407 * @buffer: pointer to buffer that recieves path
3409 * Retrieves the current directory for the current process.
3411 * Return value: number of characters in buffer on success, zero on failure
3413 extern guint32 GetCurrentDirectory (guint32 length, gunichar2 *buffer)
3415 gunichar2 *utf16_path;
3419 #ifdef __native_client__
3420 gchar *path = g_get_current_dir ();
3421 if (length < strlen(path) + 1 || path == NULL)
3423 memcpy (buffer, path, strlen(path) + 1);
3425 if (getcwd ((char*)buffer, length) == NULL) {
3426 if (errno == ERANGE) { /*buffer length is not big enough */
3427 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*/
3430 utf16_path = mono_unicode_from_external (path, &bytes);
3431 g_free (utf16_path);
3435 _wapi_set_last_error_from_errno ();
3440 utf16_path = mono_unicode_from_external ((gchar*)buffer, &bytes);
3441 count = (bytes/2)+1;
3442 g_assert (count <= length); /*getcwd must have failed before with ERANGE*/
3444 /* Add the terminator */
3445 memset (buffer, '\0', bytes+2);
3446 memcpy (buffer, utf16_path, bytes);
3448 g_free (utf16_path);
3454 * SetCurrentDirectory
3455 * @path: path to new directory
3457 * Changes the directory path for the current process.
3459 * Return value: %TRUE on success, %FALSE on failure.
3461 extern gboolean SetCurrentDirectory (const gunichar2 *path)
3467 SetLastError (ERROR_INVALID_PARAMETER);
3471 utf8_path = mono_unicode_to_external (path);
3472 if (_wapi_chdir (utf8_path) != 0) {
3473 _wapi_set_last_error_from_errno ();
3483 gboolean CreatePipe (gpointer *readpipe, gpointer *writepipe,
3484 WapiSecurityAttributes *security G_GNUC_UNUSED, guint32 size)
3486 struct _WapiHandle_file pipe_read_handle = {0};
3487 struct _WapiHandle_file pipe_write_handle = {0};
3488 gpointer read_handle;
3489 gpointer write_handle;
3493 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Creating pipe", __func__);
3497 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error creating pipe: %s", __func__,
3500 _wapi_set_last_error_from_errno ();
3504 if (filedes[0] >= mono_w32handle_fd_reserve ||
3505 filedes[1] >= mono_w32handle_fd_reserve) {
3506 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
3508 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
3516 /* filedes[0] is open for reading, filedes[1] for writing */
3518 pipe_read_handle.fd = filedes [0];
3519 pipe_read_handle.fileaccess = GENERIC_READ;
3520 read_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[0],
3522 if (read_handle == INVALID_HANDLE_VALUE) {
3523 g_warning ("%s: error creating pipe read handle", __func__);
3526 SetLastError (ERROR_GEN_FAILURE);
3531 pipe_write_handle.fd = filedes [1];
3532 pipe_write_handle.fileaccess = GENERIC_WRITE;
3533 write_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[1],
3534 &pipe_write_handle);
3535 if (write_handle == INVALID_HANDLE_VALUE) {
3536 g_warning ("%s: error creating pipe write handle", __func__);
3537 mono_w32handle_unref (read_handle);
3541 SetLastError (ERROR_GEN_FAILURE);
3546 *readpipe = read_handle;
3547 *writepipe = write_handle;
3549 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning pipe: read handle %p, write handle %p",
3550 __func__, read_handle, write_handle);
3555 #ifdef HAVE_GETFSSTAT
3556 /* Darwin has getfsstat */
3557 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3559 struct statfs *stats;
3562 glong length, total = 0;
3564 n = getfsstat (NULL, 0, MNT_NOWAIT);
3567 size = n * sizeof (struct statfs);
3568 stats = (struct statfs *) g_malloc (size);
3571 if (getfsstat (stats, size, MNT_NOWAIT) == -1){
3575 for (i = 0; i < n; i++){
3576 dir = g_utf8_to_utf16 (stats [i].f_mntonname, -1, NULL, &length, NULL);
3577 if (total + length < len){
3578 memcpy (buf + total, dir, sizeof (gunichar2) * length);
3579 buf [total+length] = 0;
3582 total += length + 1;
3591 /* In-place octal sequence replacement */
3593 unescape_octal (gchar *str)
3602 while (*rptr != '\0') {
3603 if (*rptr == '\\') {
3606 c = (*(rptr++) - '0') << 6;
3607 c += (*(rptr++) - '0') << 3;
3608 c += *(rptr++) - '0';
3610 } else if (wptr != rptr) {
3618 static gint32 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf);
3621 #define GET_LOGICAL_DRIVE_STRINGS_BUFFER 512
3622 #define GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER 512
3623 #define GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER 64
3628 guint32 buffer_index;
3629 guint32 mountpoint_index;
3630 guint32 field_number;
3631 guint32 allocated_size;
3632 guint32 fsname_index;
3633 guint32 fstype_index;
3634 gchar mountpoint [GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER + 1];
3635 gchar *mountpoint_allocated;
3636 gchar buffer [GET_LOGICAL_DRIVE_STRINGS_BUFFER];
3637 gchar fsname [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3638 gchar fstype [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3641 gboolean check_mount_source;
3642 } LinuxMountInfoParseState;
3644 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3645 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3646 static void append_to_mountpoint (LinuxMountInfoParseState *state);
3647 static gboolean add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3649 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3653 LinuxMountInfoParseState state;
3654 gboolean (*parser)(guint32, gunichar2*, LinuxMountInfoParseState*) = NULL;
3656 memset (buf, 0, len * sizeof (gunichar2));
3657 fd = open ("/proc/self/mountinfo", O_RDONLY);
3659 parser = GetLogicalDriveStrings_MountInfo;
3661 fd = open ("/proc/mounts", O_RDONLY);
3663 parser = GetLogicalDriveStrings_Mounts;
3667 ret = GetLogicalDriveStrings_Mtab (len, buf);
3671 memset (&state, 0, sizeof (LinuxMountInfoParseState));
3672 state.field_number = 1;
3673 state.delimiter = ' ';
3675 while ((state.nbytes = read (fd, state.buffer, GET_LOGICAL_DRIVE_STRINGS_BUFFER)) > 0) {
3676 state.buffer_index = 0;
3678 while ((*parser)(len, buf, &state)) {
3679 if (state.buffer [state.buffer_index] == '\n') {
3680 gboolean quit = add_drive_string (len, buf, &state);
3681 state.field_number = 1;
3682 state.buffer_index++;
3683 if (state.mountpoint_allocated) {
3684 g_free (state.mountpoint_allocated);
3685 state.mountpoint_allocated = NULL;
3702 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3706 if (state->field_number == 1)
3707 state->check_mount_source = TRUE;
3709 while (state->buffer_index < (guint32)state->nbytes) {
3710 if (state->buffer [state->buffer_index] == state->delimiter) {
3711 state->field_number++;
3712 switch (state->field_number) {
3714 state->mountpoint_index = 0;
3718 if (state->mountpoint_allocated)
3719 state->mountpoint_allocated [state->mountpoint_index] = 0;
3721 state->mountpoint [state->mountpoint_index] = 0;
3725 ptr = (gchar*)memchr (state->buffer + state->buffer_index, '\n', GET_LOGICAL_DRIVE_STRINGS_BUFFER - state->buffer_index);
3727 state->buffer_index = (ptr - (gchar*)state->buffer) - 1;
3729 state->buffer_index = state->nbytes;
3732 state->buffer_index++;
3734 } else if (state->buffer [state->buffer_index] == '\n')
3737 switch (state->field_number) {
3739 if (state->check_mount_source) {
3740 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3741 /* We can ignore the rest, it's a device
3743 state->check_mount_source = FALSE;
3744 state->fsname [state->fsname_index++] = '/';
3747 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3748 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3753 append_to_mountpoint (state);
3757 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3758 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3762 state->buffer_index++;
3768 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3770 while (state->buffer_index < (guint32)state->nbytes) {
3771 if (state->buffer [state->buffer_index] == state->delimiter) {
3772 state->field_number++;
3773 switch (state->field_number) {
3775 state->mountpoint_index = 0;
3779 if (state->mountpoint_allocated)
3780 state->mountpoint_allocated [state->mountpoint_index] = 0;
3782 state->mountpoint [state->mountpoint_index] = 0;
3786 state->delimiter = '-';
3790 state->delimiter = ' ';
3794 state->check_mount_source = TRUE;
3797 state->buffer_index++;
3799 } else if (state->buffer [state->buffer_index] == '\n')
3802 switch (state->field_number) {
3804 append_to_mountpoint (state);
3808 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3809 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3813 if (state->check_mount_source) {
3814 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3815 /* We can ignore the rest, it's a device
3817 state->check_mount_source = FALSE;
3818 state->fsname [state->fsname_index++] = '/';
3821 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3822 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3827 state->buffer_index++;
3834 append_to_mountpoint (LinuxMountInfoParseState *state)
3836 gchar ch = state->buffer [state->buffer_index];
3837 if (state->mountpoint_allocated) {
3838 if (state->mountpoint_index >= state->allocated_size) {
3839 guint32 newsize = (state->allocated_size << 1) + 1;
3840 gchar *newbuf = (gchar *)g_malloc0 (newsize * sizeof (gchar));
3842 memcpy (newbuf, state->mountpoint_allocated, state->mountpoint_index);
3843 g_free (state->mountpoint_allocated);
3844 state->mountpoint_allocated = newbuf;
3845 state->allocated_size = newsize;
3847 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3849 if (state->mountpoint_index >= GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER) {
3850 state->allocated_size = (state->mountpoint_index << 1) + 1;
3851 state->mountpoint_allocated = (gchar *)g_malloc0 (state->allocated_size * sizeof (gchar));
3852 memcpy (state->mountpoint_allocated, state->mountpoint, state->mountpoint_index);
3853 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3855 state->mountpoint [state->mountpoint_index++] = ch;
3860 add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3862 gboolean quit = FALSE;
3863 gboolean ignore_entry;
3865 if (state->fsname_index == 1 && state->fsname [0] == '/')
3866 ignore_entry = FALSE;
3867 else if (memcmp ("overlay", state->fsname, state->fsname_index) == 0 ||
3868 memcmp ("aufs", state->fstype, state->fstype_index) == 0) {
3869 /* Don't ignore overlayfs and aufs - these might be used on Docker
3870 * (https://bugzilla.xamarin.com/show_bug.cgi?id=31021) */
3871 ignore_entry = FALSE;
3872 } else if (state->fsname_index == 0 || memcmp ("none", state->fsname, state->fsname_index) == 0) {
3873 ignore_entry = TRUE;
3874 } else if (state->fstype_index >= 5 && memcmp ("fuse.", state->fstype, 5) == 0) {
3875 /* Ignore GNOME's gvfs */
3876 if (state->fstype_index == 21 && memcmp ("fuse.gvfs-fuse-daemon", state->fstype, state->fstype_index) == 0)
3877 ignore_entry = TRUE;
3879 ignore_entry = FALSE;
3880 } else if (state->fstype_index == 3 && memcmp ("nfs", state->fstype, state->fstype_index) == 0)
3881 ignore_entry = FALSE;
3883 ignore_entry = TRUE;
3885 if (!ignore_entry) {
3888 gchar *mountpoint = state->mountpoint_allocated ? state->mountpoint_allocated : state->mountpoint;
3890 unescape_octal (mountpoint);
3891 dir = g_utf8_to_utf16 (mountpoint, -1, NULL, &length, NULL);
3892 if (state->total + length + 1 > len) {
3894 state->total = len * 2;
3897 memcpy (buf + state->total, dir, sizeof (gunichar2) * length);
3898 state->total += length;
3902 state->fsname_index = 0;
3903 state->fstype_index = 0;
3909 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3911 return GetLogicalDriveStrings_Mtab (len, buf);
3915 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf)
3918 gunichar2 *ptr, *dir;
3919 glong length, total = 0;
3923 memset (buf, 0, sizeof (gunichar2) * (len + 1));
3928 /* Sigh, mntent and friends don't work well.
3929 * It stops on the first line that doesn't begin with a '/'.
3930 * (linux 2.6.5, libc 2.3.2.ds1-12) - Gonz */
3931 fp = fopen ("/etc/mtab", "rt");
3933 fp = fopen ("/etc/mnttab", "rt");
3939 while (fgets (buffer, 512, fp) != NULL) {
3943 splitted = g_strsplit (buffer, " ", 0);
3944 if (!*splitted || !*(splitted + 1)) {
3945 g_strfreev (splitted);
3949 unescape_octal (*(splitted + 1));
3950 dir = g_utf8_to_utf16 (*(splitted + 1), -1, NULL, &length, NULL);
3951 g_strfreev (splitted);
3952 if (total + length + 1 > len) {
3955 return len * 2; /* guess */
3958 memcpy (ptr + total, dir, sizeof (gunichar2) * length);
3960 total += length + 1;
3965 /* Commented out, does not work with my mtab!!! - Gonz */
3966 #ifdef NOTENABLED /* HAVE_MNTENT_H */
3970 gunichar2 *ptr, *dir;
3971 glong len, total = 0;
3974 fp = setmntent ("/etc/mtab", "rt");
3976 fp = setmntent ("/etc/mnttab", "rt");
3982 while ((mnt = getmntent (fp)) != NULL) {
3983 g_print ("GOT %s\n", mnt->mnt_dir);
3984 dir = g_utf8_to_utf16 (mnt->mnt_dir, &len, NULL, NULL, NULL);
3985 if (total + len + 1 > len) {
3986 return len * 2; /* guess */
3989 memcpy (ptr + total, dir, sizeof (gunichar2) * len);
4001 #if defined(HAVE_STATVFS) || defined(HAVE_STATFS)
4002 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, WapiULargeInteger *free_bytes_avail,
4003 WapiULargeInteger *total_number_of_bytes,
4004 WapiULargeInteger *total_number_of_free_bytes)
4007 struct statvfs fsstat;
4008 #elif defined(HAVE_STATFS)
4009 struct statfs fsstat;
4011 gboolean isreadonly;
4012 gchar *utf8_path_name;
4014 unsigned long block_size;
4016 if (path_name == NULL) {
4017 utf8_path_name = g_strdup (g_get_current_dir());
4018 if (utf8_path_name == NULL) {
4019 SetLastError (ERROR_DIRECTORY);
4024 utf8_path_name = mono_unicode_to_external (path_name);
4025 if (utf8_path_name == NULL) {
4026 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4028 SetLastError (ERROR_INVALID_NAME);
4035 ret = statvfs (utf8_path_name, &fsstat);
4036 isreadonly = ((fsstat.f_flag & ST_RDONLY) == ST_RDONLY);
4037 block_size = fsstat.f_frsize;
4038 #elif defined(HAVE_STATFS)
4039 ret = statfs (utf8_path_name, &fsstat);
4040 #if defined (MNT_RDONLY)
4041 isreadonly = ((fsstat.f_flags & MNT_RDONLY) == MNT_RDONLY);
4042 #elif defined (MS_RDONLY)
4043 isreadonly = ((fsstat.f_flags & MS_RDONLY) == MS_RDONLY);
4045 block_size = fsstat.f_bsize;
4047 } while(ret == -1 && errno == EINTR);
4049 g_free(utf8_path_name);
4052 _wapi_set_last_error_from_errno ();
4053 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: statvfs failed: %s", __func__, strerror (errno));
4057 /* total number of free bytes for non-root */
4058 if (free_bytes_avail != NULL) {
4060 free_bytes_avail->QuadPart = 0;
4063 free_bytes_avail->QuadPart = block_size * (guint64)fsstat.f_bavail;
4067 /* total number of bytes available for non-root */
4068 if (total_number_of_bytes != NULL) {
4069 total_number_of_bytes->QuadPart = block_size * (guint64)fsstat.f_blocks;
4072 /* total number of bytes available for root */
4073 if (total_number_of_free_bytes != NULL) {
4075 total_number_of_free_bytes->QuadPart = 0;
4078 total_number_of_free_bytes->QuadPart = block_size * (guint64)fsstat.f_bfree;
4085 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, WapiULargeInteger *free_bytes_avail,
4086 WapiULargeInteger *total_number_of_bytes,
4087 WapiULargeInteger *total_number_of_free_bytes)
4089 if (free_bytes_avail != NULL) {
4090 free_bytes_avail->QuadPart = (guint64) -1;
4093 if (total_number_of_bytes != NULL) {
4094 total_number_of_bytes->QuadPart = (guint64) -1;
4097 if (total_number_of_free_bytes != NULL) {
4098 total_number_of_free_bytes->QuadPart = (guint64) -1;
4106 * General Unix support
4111 const long fstypeid;
4113 const gchar* fstype;
4116 static _wapi_drive_type _wapi_drive_types[] = {
4118 { DRIVE_REMOTE, "afp" },
4119 { DRIVE_REMOTE, "autofs" },
4120 { DRIVE_CDROM, "cddafs" },
4121 { DRIVE_CDROM, "cd9660" },
4122 { DRIVE_RAMDISK, "devfs" },
4123 { DRIVE_FIXED, "exfat" },
4124 { DRIVE_RAMDISK, "fdesc" },
4125 { DRIVE_REMOTE, "ftp" },
4126 { DRIVE_FIXED, "hfs" },
4127 { DRIVE_FIXED, "msdos" },
4128 { DRIVE_REMOTE, "nfs" },
4129 { DRIVE_FIXED, "ntfs" },
4130 { DRIVE_REMOTE, "smbfs" },
4131 { DRIVE_FIXED, "udf" },
4132 { DRIVE_REMOTE, "webdav" },
4133 { DRIVE_UNKNOWN, NULL }
4135 { DRIVE_FIXED, ADFS_SUPER_MAGIC, "adfs"},
4136 { DRIVE_FIXED, AFFS_SUPER_MAGIC, "affs"},
4137 { DRIVE_REMOTE, AFS_SUPER_MAGIC, "afs"},
4138 { DRIVE_RAMDISK, AUTOFS_SUPER_MAGIC, "autofs"},
4139 { DRIVE_RAMDISK, AUTOFS_SBI_MAGIC, "autofs4"},
4140 { DRIVE_REMOTE, CODA_SUPER_MAGIC, "coda" },
4141 { DRIVE_RAMDISK, CRAMFS_MAGIC, "cramfs"},
4142 { DRIVE_RAMDISK, CRAMFS_MAGIC_WEND, "cramfs"},
4143 { DRIVE_REMOTE, CIFS_MAGIC_NUMBER, "cifs"},
4144 { DRIVE_RAMDISK, DEBUGFS_MAGIC, "debugfs"},
4145 { DRIVE_RAMDISK, SYSFS_MAGIC, "sysfs"},
4146 { DRIVE_RAMDISK, SECURITYFS_MAGIC, "securityfs"},
4147 { DRIVE_RAMDISK, SELINUX_MAGIC, "selinuxfs"},
4148 { DRIVE_RAMDISK, RAMFS_MAGIC, "ramfs"},
4149 { DRIVE_FIXED, SQUASHFS_MAGIC, "squashfs"},
4150 { DRIVE_FIXED, EFS_SUPER_MAGIC, "efs"},
4151 { DRIVE_FIXED, EXT2_SUPER_MAGIC, "ext"},
4152 { DRIVE_FIXED, EXT3_SUPER_MAGIC, "ext"},
4153 { DRIVE_FIXED, EXT4_SUPER_MAGIC, "ext"},
4154 { DRIVE_REMOTE, XENFS_SUPER_MAGIC, "xenfs"},
4155 { DRIVE_FIXED, BTRFS_SUPER_MAGIC, "btrfs"},
4156 { DRIVE_FIXED, HFS_SUPER_MAGIC, "hfs"},
4157 { DRIVE_FIXED, HFSPLUS_SUPER_MAGIC, "hfsplus"},
4158 { DRIVE_FIXED, HPFS_SUPER_MAGIC, "hpfs"},
4159 { DRIVE_RAMDISK, HUGETLBFS_MAGIC, "hugetlbfs"},
4160 { DRIVE_CDROM, ISOFS_SUPER_MAGIC, "iso"},
4161 { DRIVE_FIXED, JFFS2_SUPER_MAGIC, "jffs2"},
4162 { DRIVE_RAMDISK, ANON_INODE_FS_MAGIC, "anon_inode"},
4163 { DRIVE_FIXED, JFS_SUPER_MAGIC, "jfs"},
4164 { DRIVE_FIXED, MINIX_SUPER_MAGIC, "minix"},
4165 { DRIVE_FIXED, MINIX_SUPER_MAGIC2, "minix v2"},
4166 { DRIVE_FIXED, MINIX2_SUPER_MAGIC, "minix2"},
4167 { DRIVE_FIXED, MINIX2_SUPER_MAGIC2, "minix2 v2"},
4168 { DRIVE_FIXED, MINIX3_SUPER_MAGIC, "minix3"},
4169 { DRIVE_FIXED, MSDOS_SUPER_MAGIC, "msdos"},
4170 { DRIVE_REMOTE, NCP_SUPER_MAGIC, "ncp"},
4171 { DRIVE_REMOTE, NFS_SUPER_MAGIC, "nfs"},
4172 { DRIVE_FIXED, NTFS_SB_MAGIC, "ntfs"},
4173 { DRIVE_RAMDISK, OPENPROM_SUPER_MAGIC, "openpromfs"},
4174 { DRIVE_RAMDISK, PROC_SUPER_MAGIC, "proc"},
4175 { DRIVE_FIXED, QNX4_SUPER_MAGIC, "qnx4"},
4176 { DRIVE_FIXED, REISERFS_SUPER_MAGIC, "reiserfs"},
4177 { DRIVE_RAMDISK, ROMFS_MAGIC, "romfs"},
4178 { DRIVE_REMOTE, SMB_SUPER_MAGIC, "samba"},
4179 { DRIVE_RAMDISK, CGROUP_SUPER_MAGIC, "cgroupfs"},
4180 { DRIVE_RAMDISK, FUTEXFS_SUPER_MAGIC, "futexfs"},
4181 { DRIVE_FIXED, SYSV2_SUPER_MAGIC, "sysv2"},
4182 { DRIVE_FIXED, SYSV4_SUPER_MAGIC, "sysv4"},
4183 { DRIVE_RAMDISK, TMPFS_MAGIC, "tmpfs"},
4184 { DRIVE_RAMDISK, DEVPTS_SUPER_MAGIC, "devpts"},
4185 { DRIVE_CDROM, UDF_SUPER_MAGIC, "udf"},
4186 { DRIVE_FIXED, UFS_MAGIC, "ufs"},
4187 { DRIVE_FIXED, UFS_MAGIC_BW, "ufs"},
4188 { DRIVE_FIXED, UFS2_MAGIC, "ufs2"},
4189 { DRIVE_FIXED, UFS_CIGAM, "ufs"},
4190 { DRIVE_RAMDISK, USBDEVICE_SUPER_MAGIC, "usbdev"},
4191 { DRIVE_FIXED, XENIX_SUPER_MAGIC, "xenix"},
4192 { DRIVE_FIXED, XFS_SB_MAGIC, "xfs"},
4193 { DRIVE_RAMDISK, FUSE_SUPER_MAGIC, "fuse"},
4194 { DRIVE_FIXED, V9FS_MAGIC, "9p"},
4195 { DRIVE_REMOTE, CEPH_SUPER_MAGIC, "ceph"},
4196 { DRIVE_RAMDISK, CONFIGFS_MAGIC, "configfs"},
4197 { DRIVE_RAMDISK, ECRYPTFS_SUPER_MAGIC, "eCryptfs"},
4198 { DRIVE_FIXED, EXOFS_SUPER_MAGIC, "exofs"},
4199 { DRIVE_FIXED, VXFS_SUPER_MAGIC, "vxfs"},
4200 { DRIVE_FIXED, VXFS_OLT_MAGIC, "vxfs_olt"},
4201 { DRIVE_REMOTE, GFS2_MAGIC, "gfs2"},
4202 { DRIVE_FIXED, LOGFS_MAGIC_U32, "logfs"},
4203 { DRIVE_FIXED, OCFS2_SUPER_MAGIC, "ocfs2"},
4204 { DRIVE_FIXED, OMFS_MAGIC, "omfs"},
4205 { DRIVE_FIXED, UBIFS_SUPER_MAGIC, "ubifs"},
4206 { DRIVE_UNKNOWN, 0, NULL}
4208 { DRIVE_RAMDISK, "ramfs" },
4209 { DRIVE_RAMDISK, "tmpfs" },
4210 { DRIVE_RAMDISK, "proc" },
4211 { DRIVE_RAMDISK, "sysfs" },
4212 { DRIVE_RAMDISK, "debugfs" },
4213 { DRIVE_RAMDISK, "devpts" },
4214 { DRIVE_RAMDISK, "securityfs" },
4215 { DRIVE_CDROM, "iso9660" },
4216 { DRIVE_FIXED, "ext2" },
4217 { DRIVE_FIXED, "ext3" },
4218 { DRIVE_FIXED, "ext4" },
4219 { DRIVE_FIXED, "sysv" },
4220 { DRIVE_FIXED, "reiserfs" },
4221 { DRIVE_FIXED, "ufs" },
4222 { DRIVE_FIXED, "vfat" },
4223 { DRIVE_FIXED, "msdos" },
4224 { DRIVE_FIXED, "udf" },
4225 { DRIVE_FIXED, "hfs" },
4226 { DRIVE_FIXED, "hpfs" },
4227 { DRIVE_FIXED, "qnx4" },
4228 { DRIVE_FIXED, "ntfs" },
4229 { DRIVE_FIXED, "ntfs-3g" },
4230 { DRIVE_REMOTE, "smbfs" },
4231 { DRIVE_REMOTE, "fuse" },
4232 { DRIVE_REMOTE, "nfs" },
4233 { DRIVE_REMOTE, "nfs4" },
4234 { DRIVE_REMOTE, "cifs" },
4235 { DRIVE_REMOTE, "ncpfs" },
4236 { DRIVE_REMOTE, "coda" },
4237 { DRIVE_REMOTE, "afs" },
4238 { DRIVE_UNKNOWN, NULL }
4243 static guint32 _wapi_get_drive_type(long f_type)
4245 _wapi_drive_type *current;
4247 current = &_wapi_drive_types[0];
4248 while (current->drive_type != DRIVE_UNKNOWN) {
4249 if (current->fstypeid == f_type)
4250 return current->drive_type;
4254 return DRIVE_UNKNOWN;
4257 static guint32 _wapi_get_drive_type(const gchar* fstype)
4259 _wapi_drive_type *current;
4261 current = &_wapi_drive_types[0];
4262 while (current->drive_type != DRIVE_UNKNOWN) {
4263 if (strcmp (current->fstype, fstype) == 0)
4269 return current->drive_type;
4273 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4275 GetDriveTypeFromPath (const char *utf8_root_path_name)
4279 if (statfs (utf8_root_path_name, &buf) == -1)
4280 return DRIVE_UNKNOWN;
4282 return _wapi_get_drive_type (buf.f_fstypename);
4284 return _wapi_get_drive_type (buf.f_type);
4289 GetDriveTypeFromPath (const gchar *utf8_root_path_name)
4296 fp = fopen ("/etc/mtab", "rt");
4298 fp = fopen ("/etc/mnttab", "rt");
4300 return(DRIVE_UNKNOWN);
4303 drive_type = DRIVE_NO_ROOT_DIR;
4304 while (fgets (buffer, 512, fp) != NULL) {
4305 splitted = g_strsplit (buffer, " ", 0);
4306 if (!*splitted || !*(splitted + 1) || !*(splitted + 2)) {
4307 g_strfreev (splitted);
4311 /* compare given root_path_name with the one from mtab,
4312 if length of utf8_root_path_name is zero it must be the root dir */
4313 if (strcmp (*(splitted + 1), utf8_root_path_name) == 0 ||
4314 (strcmp (*(splitted + 1), "/") == 0 && strlen (utf8_root_path_name) == 0)) {
4315 drive_type = _wapi_get_drive_type (*(splitted + 2));
4316 /* it is possible this path might be mounted again with
4317 a known type...keep looking */
4318 if (drive_type != DRIVE_UNKNOWN) {
4319 g_strfreev (splitted);
4324 g_strfreev (splitted);
4332 guint32 GetDriveType(const gunichar2 *root_path_name)
4334 gchar *utf8_root_path_name;
4337 if (root_path_name == NULL) {
4338 utf8_root_path_name = g_strdup (g_get_current_dir());
4339 if (utf8_root_path_name == NULL) {
4340 return(DRIVE_NO_ROOT_DIR);
4344 utf8_root_path_name = mono_unicode_to_external (root_path_name);
4345 if (utf8_root_path_name == NULL) {
4346 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4347 return(DRIVE_NO_ROOT_DIR);
4350 /* strip trailing slash for compare below */
4351 if (g_str_has_suffix(utf8_root_path_name, "/") && utf8_root_path_name [1] != 0) {
4352 utf8_root_path_name[strlen(utf8_root_path_name) - 1] = 0;
4355 drive_type = GetDriveTypeFromPath (utf8_root_path_name);
4356 g_free (utf8_root_path_name);
4358 return (drive_type);
4361 #if defined (PLATFORM_MACOSX) || defined (__linux__) || defined(PLATFORM_BSD) || defined(__native_client__) || defined(__FreeBSD_kernel__)
4363 get_fstypename (gchar *utfpath)
4365 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4368 _wapi_drive_type *current;
4370 if (statfs (utfpath, &stat) == -1)
4373 return g_strdup (stat.f_fstypename);
4375 current = &_wapi_drive_types[0];
4376 while (current->drive_type != DRIVE_UNKNOWN) {
4377 if (stat.f_type == current->fstypeid)
4378 return g_strdup (current->fstype);
4388 /* Linux has struct statfs which has a different layout */
4390 GetVolumeInformation (const gunichar2 *path, gunichar2 *volumename, int volumesize, int *outserial, int *maxcomp, int *fsflags, gunichar2 *fsbuffer, int fsbuffersize)
4394 gboolean status = FALSE;
4397 // We only support getting the file system type
4398 if (fsbuffer == NULL)
4401 utfpath = mono_unicode_to_external (path);
4402 if ((fstypename = get_fstypename (utfpath)) != NULL){
4403 gunichar2 *ret = g_utf8_to_utf16 (fstypename, -1, NULL, &len, NULL);
4404 if (ret != NULL && len < fsbuffersize){
4405 memcpy (fsbuffer, ret, len * sizeof (gunichar2));
4411 g_free (fstypename);
4419 _wapi_io_init (void)
4421 mono_os_mutex_init (&stdhandle_mutex);
4422 mono_os_mutex_init (&file_share_mutex);
4424 mono_w32handle_register_ops (MONO_W32HANDLE_FILE, &_wapi_file_ops);
4425 mono_w32handle_register_ops (MONO_W32HANDLE_CONSOLE, &_wapi_console_ops);
4426 mono_w32handle_register_ops (MONO_W32HANDLE_FIND, &_wapi_find_ops);
4427 mono_w32handle_register_ops (MONO_W32HANDLE_PIPE, &_wapi_pipe_ops);
4429 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_FILE, */
4430 /* MONO_W32HANDLE_CAP_WAIT); */
4431 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_CONSOLE, */
4432 /* MONO_W32HANDLE_CAP_WAIT); */
4434 if (g_getenv ("MONO_STRICT_IO_EMULATION"))
4435 lock_while_writing = TRUE;
4439 _wapi_io_cleanup (void)
4441 mono_os_mutex_destroy (&file_share_mutex);
4443 if (file_share_hash)
4444 g_hash_table_destroy (file_share_hash);