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[io-layer] Remove status.h, types.h, timefuncs.h and macros.h (#4069)
[mono-project.git] / mono / io-layer / io.c
blob05d554a12c0c621abf4b44aabf6239d36781301b
1 /*
2 * io.c: File, console and find handles
3 *
4 * Author:
5 * Dick Porter (dick@ximian.com)
6 *
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.
11 */
12
13 #include <config.h>
14 #include <glib.h>
15 #include <fcntl.h>
16 #include <unistd.h>
17 #include <errno.h>
18 #include <string.h>
19 #include <sys/stat.h>
20 #ifdef HAVE_SYS_STATVFS_H
21 #include <sys/statvfs.h>
22 #endif
23 #if defined(HAVE_SYS_STATFS_H)
24 #include <sys/statfs.h>
25 #endif
26 #if defined(HAVE_SYS_PARAM_H) && defined(HAVE_SYS_MOUNT_H)
27 #include <sys/param.h>
28 #include <sys/mount.h>
29 #endif
30 #include <sys/types.h>
31 #include <stdio.h>
32 #include <utime.h>
33 #ifdef __linux__
34 #include <sys/ioctl.h>
35 #include <linux/fs.h>
36 #include <mono/utils/linux_magic.h>
37 #endif
38
39 #include <mono/io-layer/wapi.h>
40 #include <mono/io-layer/wapi-private.h>
41 #include <mono/io-layer/io-private.h>
42 #include <mono/io-layer/io-portability.h>
43 #include <mono/io-layer/io-trace.h>
44 #include <mono/utils/strenc.h>
45 #include <mono/utils/mono-once.h>
46 #include <mono/utils/mono-logger-internals.h>
47 #include <mono/metadata/w32handle.h>
48
49 /*
50 * If SHM is disabled, this will point to a hash of _WapiFileShare structures, otherwise
51 * it will be NULL. We use this instead of _wapi_fileshare_layout to avoid allocating a
52 * 4MB array.
53 */
54 static GHashTable *file_share_hash;
55 static mono_mutex_t file_share_mutex;
56
57 static void
58 time_t_to_filetime (time_t timeval, WapiFileTime *filetime)
59 {
60 guint64 ticks;
61
62 ticks = ((guint64)timeval * 10000000) + 116444736000000000ULL;
63 filetime->dwLowDateTime = ticks & 0xFFFFFFFF;
64 filetime->dwHighDateTime = ticks >> 32;
65 }
66
67 static void
68 _wapi_handle_share_release (_WapiFileShare *share_info)
69 {
70 /* Prevent new entries racing with us */
71 mono_os_mutex_lock (&file_share_mutex);
72
73 g_assert (share_info->handle_refs > 0);
74 share_info->handle_refs -= 1;
75
76 if (share_info->handle_refs == 0)
77 g_hash_table_remove (file_share_hash, share_info);
78
79 mono_os_mutex_unlock (&file_share_mutex);
80 }
81
82 static gint
83 wapi_share_info_equal (gconstpointer ka, gconstpointer kb)
84 {
85 const _WapiFileShare *s1 = (const _WapiFileShare *)ka;
86 const _WapiFileShare *s2 = (const _WapiFileShare *)kb;
87
88 return (s1->device == s2->device && s1->inode == s2->inode) ? 1 : 0;
89 }
90
91 static guint
92 wapi_share_info_hash (gconstpointer data)
93 {
94 const _WapiFileShare *s = (const _WapiFileShare *)data;
95
96 return s->inode;
97 }
98
99 static gboolean
100 _wapi_handle_get_or_set_share (guint64 device, guint64 inode, guint32 new_sharemode, guint32 new_access,
101 guint32 *old_sharemode, guint32 *old_access, struct _WapiFileShare **share_info)
102 {
103 struct _WapiFileShare *file_share;
104 gboolean exists = FALSE;
105
106 /* Prevent new entries racing with us */
107 mono_os_mutex_lock (&file_share_mutex);
108
109 _WapiFileShare tmp;
110
111 /*
112 * Instead of allocating a 4MB array, we use a hash table to keep track of this
113 * info. This is needed even if SHM is disabled, to track sharing inside
114 * the current process.
115 */
116 if (!file_share_hash)
117 file_share_hash = g_hash_table_new_full (wapi_share_info_hash, wapi_share_info_equal, NULL, g_free);
118
119 tmp.device = device;
120 tmp.inode = inode;
121
122 file_share = (_WapiFileShare *)g_hash_table_lookup (file_share_hash, &tmp);
123 if (file_share) {
124 *old_sharemode = file_share->sharemode;
125 *old_access = file_share->access;
126 *share_info = file_share;
127
128 g_assert (file_share->handle_refs > 0);
129 file_share->handle_refs += 1;
130
131 exists = TRUE;
132 } else {
133 file_share = g_new0 (_WapiFileShare, 1);
134
135 file_share->device = device;
136 file_share->inode = inode;
137 file_share->opened_by_pid = wapi_getpid ();
138 file_share->sharemode = new_sharemode;
139 file_share->access = new_access;
140 file_share->handle_refs = 1;
141 *share_info = file_share;
142
143 g_hash_table_insert (file_share_hash, file_share, file_share);
144 }
145
146 mono_os_mutex_unlock (&file_share_mutex);
147
148 return(exists);
149 }
150
151 static void file_close (gpointer handle, gpointer data);
152 static void file_details (gpointer data);
153 static const gchar* file_typename (void);
154 static gsize file_typesize (void);
155 static WapiFileType file_getfiletype(void);
156 static gboolean file_read(gpointer handle, gpointer buffer,
157 guint32 numbytes, guint32 *bytesread,
158 WapiOverlapped *overlapped);
159 static gboolean file_write(gpointer handle, gconstpointer buffer,
160 guint32 numbytes, guint32 *byteswritten,
161 WapiOverlapped *overlapped);
162 static gboolean file_flush(gpointer handle);
163 static guint32 file_seek(gpointer handle, gint32 movedistance,
164 gint32 *highmovedistance, WapiSeekMethod method);
165 static gboolean file_setendoffile(gpointer handle);
166 static guint32 file_getfilesize(gpointer handle, guint32 *highsize);
167 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
168 WapiFileTime *last_access,
169 WapiFileTime *last_write);
170 static gboolean file_setfiletime(gpointer handle,
171 const WapiFileTime *create_time,
172 const WapiFileTime *last_access,
173 const WapiFileTime *last_write);
174 static guint32 GetDriveTypeFromPath (const gchar *utf8_root_path_name);
175
176 /* File handle is only signalled for overlapped IO */
177 static MonoW32HandleOps _wapi_file_ops = {
178 file_close, /* close */
179 NULL, /* signal */
180 NULL, /* own */
181 NULL, /* is_owned */
182 NULL, /* special_wait */
183 NULL, /* prewait */
184 file_details, /* details */
185 file_typename, /* typename */
186 file_typesize, /* typesize */
187 };
188
189 static void console_close (gpointer handle, gpointer data);
190 static void console_details (gpointer data);
191 static const gchar* console_typename (void);
192 static gsize console_typesize (void);
193 static WapiFileType console_getfiletype(void);
194 static gboolean console_read(gpointer handle, gpointer buffer,
195 guint32 numbytes, guint32 *bytesread,
196 WapiOverlapped *overlapped);
197 static gboolean console_write(gpointer handle, gconstpointer buffer,
198 guint32 numbytes, guint32 *byteswritten,
199 WapiOverlapped *overlapped);
200
201 /* Console is mostly the same as file, except it can block waiting for
202 * input or output
203 */
204 static MonoW32HandleOps _wapi_console_ops = {
205 console_close, /* close */
206 NULL, /* signal */
207 NULL, /* own */
208 NULL, /* is_owned */
209 NULL, /* special_wait */
210 NULL, /* prewait */
211 console_details, /* details */
212 console_typename, /* typename */
213 console_typesize, /* typesize */
214 };
215
216 static const gchar* find_typename (void);
217 static gsize find_typesize (void);
218
219 static MonoW32HandleOps _wapi_find_ops = {
220 NULL, /* close */
221 NULL, /* signal */
222 NULL, /* own */
223 NULL, /* is_owned */
224 NULL, /* special_wait */
225 NULL, /* prewait */
226 NULL, /* details */
227 find_typename, /* typename */
228 find_typesize, /* typesize */
229 };
230
231 static void pipe_close (gpointer handle, gpointer data);
232 static void pipe_details (gpointer data);
233 static const gchar* pipe_typename (void);
234 static gsize pipe_typesize (void);
235 static WapiFileType pipe_getfiletype (void);
236 static gboolean pipe_read (gpointer handle, gpointer buffer, guint32 numbytes,
237 guint32 *bytesread, WapiOverlapped *overlapped);
238 static gboolean pipe_write (gpointer handle, gconstpointer buffer,
239 guint32 numbytes, guint32 *byteswritten,
240 WapiOverlapped *overlapped);
241
242 /* Pipe handles
243 */
244 static MonoW32HandleOps _wapi_pipe_ops = {
245 pipe_close, /* close */
246 NULL, /* signal */
247 NULL, /* own */
248 NULL, /* is_owned */
249 NULL, /* special_wait */
250 NULL, /* prewait */
251 pipe_details, /* details */
252 pipe_typename, /* typename */
253 pipe_typesize, /* typesize */
254 };
255
256 static const struct {
257 /* File, console and pipe handles */
258 WapiFileType (*getfiletype)(void);
259
260 /* File, console and pipe handles */
261 gboolean (*readfile)(gpointer handle, gpointer buffer,
262 guint32 numbytes, guint32 *bytesread,
263 WapiOverlapped *overlapped);
264 gboolean (*writefile)(gpointer handle, gconstpointer buffer,
265 guint32 numbytes, guint32 *byteswritten,
266 WapiOverlapped *overlapped);
267 gboolean (*flushfile)(gpointer handle);
268
269 /* File handles */
270 guint32 (*seek)(gpointer handle, gint32 movedistance,
271 gint32 *highmovedistance, WapiSeekMethod method);
272 gboolean (*setendoffile)(gpointer handle);
273 guint32 (*getfilesize)(gpointer handle, guint32 *highsize);
274 gboolean (*getfiletime)(gpointer handle, WapiFileTime *create_time,
275 WapiFileTime *last_access,
276 WapiFileTime *last_write);
277 gboolean (*setfiletime)(gpointer handle,
278 const WapiFileTime *create_time,
279 const WapiFileTime *last_access,
280 const WapiFileTime *last_write);
281 } io_ops[MONO_W32HANDLE_COUNT]={
282 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
283 /* file */
284 {file_getfiletype,
285 file_read, file_write,
286 file_flush, file_seek,
287 file_setendoffile,
288 file_getfilesize,
289 file_getfiletime,
290 file_setfiletime},
291 /* console */
292 {console_getfiletype,
293 console_read,
294 console_write,
295 NULL, NULL, NULL, NULL, NULL, NULL},
296 /* thread */
297 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
298 /* sem */
299 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
300 /* mutex */
301 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
302 /* event */
303 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
304 /* socket (will need at least read and write) */
305 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
306 /* find */
307 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
308 /* process */
309 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
310 /* pipe */
311 {pipe_getfiletype,
312 pipe_read,
313 pipe_write,
314 NULL, NULL, NULL, NULL, NULL, NULL},
315 };
316
317 static gboolean lock_while_writing = FALSE;
318
319 /* Some utility functions.
320 */
321
322 /*
323 * Check if a file is writable by the current user.
324 *
325 * This is is a best effort kind of thing. It assumes a reasonable sane set
326 * of permissions by the underlying OS.
327 *
328 * We generally assume that basic unix permission bits are authoritative. Which might not
329 * be the case under systems with extended permissions systems (posix ACLs, SELinux, OSX/iOS sandboxing, etc)
330 *
331 * The choice of access as the fallback is due to the expected lower overhead compared to trying to open the file.
332 *
333 * The only expected problem with using access are for root, setuid or setgid programs as access is not consistent
334 * under those situations. It's to be expected that this should not happen in practice as those bits are very dangerous
335 * and should not be used with a dynamic runtime.
336 */
337 static gboolean
338 is_file_writable (struct stat *st, const char *path)
339 {
340 #if __APPLE__
341 // OS X Finder "locked" or `ls -lO` "uchg".
342 // This only covers one of several cases where an OS X file could be unwritable through special flags.
343 if (st->st_flags & (UF_IMMUTABLE|SF_IMMUTABLE))
344 return 0;
345 #endif
346
347 /* Is it globally writable? */
348 if (st->st_mode & S_IWOTH)
349 return 1;
350
351 /* Am I the owner? */
352 if ((st->st_uid == geteuid ()) && (st->st_mode & S_IWUSR))
353 return 1;
354
355 /* Am I in the same group? */
356 if ((st->st_gid == getegid ()) && (st->st_mode & S_IWGRP))
357 return 1;
358
359 /* Fallback to using access(2). It's not ideal as it might not take into consideration euid/egid
360 * but it's the only sane option we have on unix.
361 */
362 return access (path, W_OK) == 0;
363 }
364
365
366 static guint32 _wapi_stat_to_file_attributes (const gchar *pathname,
367 struct stat *buf,
368 struct stat *lbuf)
369 {
370 guint32 attrs = 0;
371 gchar *filename;
372
373 /* FIXME: this could definitely be better, but there seems to
374 * be no pattern to the attributes that are set
375 */
376
377 /* Sockets (0140000) != Directory (040000) + Regular file (0100000) */
378 if (S_ISSOCK (buf->st_mode))
379 buf->st_mode &= ~S_IFSOCK; /* don't consider socket protection */
380
381 filename = _wapi_basename (pathname);
382
383 if (S_ISDIR (buf->st_mode)) {
384 attrs = FILE_ATTRIBUTE_DIRECTORY;
385 if (!is_file_writable (buf, pathname)) {
386 attrs |= FILE_ATTRIBUTE_READONLY;
387 }
388 if (filename[0] == '.') {
389 attrs |= FILE_ATTRIBUTE_HIDDEN;
390 }
391 } else {
392 if (!is_file_writable (buf, pathname)) {
393 attrs = FILE_ATTRIBUTE_READONLY;
394
395 if (filename[0] == '.') {
396 attrs |= FILE_ATTRIBUTE_HIDDEN;
397 }
398 } else if (filename[0] == '.') {
399 attrs = FILE_ATTRIBUTE_HIDDEN;
400 } else {
401 attrs = FILE_ATTRIBUTE_NORMAL;
402 }
403 }
404
405 if (lbuf != NULL) {
406 if (S_ISLNK (lbuf->st_mode)) {
407 attrs |= FILE_ATTRIBUTE_REPARSE_POINT;
408 }
409 }
410
411 g_free (filename);
412
413 return attrs;
414 }
415
416 static void
417 _wapi_set_last_error_from_errno (void)
418 {
419 SetLastError (_wapi_get_win32_file_error (errno));
420 }
421
422 static void _wapi_set_last_path_error_from_errno (const gchar *dir,
423 const gchar *path)
424 {
425 if (errno == ENOENT) {
426 /* Check the path - if it's a missing directory then
427 * we need to set PATH_NOT_FOUND not FILE_NOT_FOUND
428 */
429 gchar *dirname;
430
431
432 if (dir == NULL) {
433 dirname = _wapi_dirname (path);
434 } else {
435 dirname = g_strdup (dir);
436 }
437
438 if (_wapi_access (dirname, F_OK) == 0) {
439 SetLastError (ERROR_FILE_NOT_FOUND);
440 } else {
441 SetLastError (ERROR_PATH_NOT_FOUND);
442 }
443
444 g_free (dirname);
445 } else {
446 _wapi_set_last_error_from_errno ();
447 }
448 }
449
450 /* Handle ops.
451 */
452 static void file_close (gpointer handle, gpointer data)
453 {
454 struct _WapiHandle_file *file_handle = (struct _WapiHandle_file *)data;
455 int fd = file_handle->fd;
456
457 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing file handle %p [%s]", __func__, handle,
458 file_handle->filename);
459
460 if (file_handle->attrs & FILE_FLAG_DELETE_ON_CLOSE)
461 _wapi_unlink (file_handle->filename);
462
463 g_free (file_handle->filename);
464
465 if (file_handle->share_info)
466 _wapi_handle_share_release (file_handle->share_info);
467
468 close (fd);
469 }
470
471 static void file_details (gpointer data)
472 {
473 struct _WapiHandle_file *file = (struct _WapiHandle_file *)data;
474
475 g_print ("[%20s] acc: %c%c%c, shr: %c%c%c, attrs: %5u",
476 file->filename,
477 file->fileaccess&GENERIC_READ?'R':'.',
478 file->fileaccess&GENERIC_WRITE?'W':'.',
479 file->fileaccess&GENERIC_EXECUTE?'X':'.',
480 file->sharemode&FILE_SHARE_READ?'R':'.',
481 file->sharemode&FILE_SHARE_WRITE?'W':'.',
482 file->sharemode&FILE_SHARE_DELETE?'D':'.',
483 file->attrs);
484 }
485
486 static const gchar* file_typename (void)
487 {
488 return "File";
489 }
490
491 static gsize file_typesize (void)
492 {
493 return sizeof (struct _WapiHandle_file);
494 }
495
496 static WapiFileType file_getfiletype(void)
497 {
498 return(FILE_TYPE_DISK);
499 }
500
501 static gboolean file_read(gpointer handle, gpointer buffer,
502 guint32 numbytes, guint32 *bytesread,
503 WapiOverlapped *overlapped)
504 {
505 struct _WapiHandle_file *file_handle;
506 gboolean ok;
507 int fd, ret;
508 MonoThreadInfo *info = mono_thread_info_current ();
509
510 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
511 (gpointer *)&file_handle);
512 if(ok==FALSE) {
513 g_warning ("%s: error looking up file handle %p", __func__,
514 handle);
515 SetLastError (ERROR_INVALID_HANDLE);
516 return(FALSE);
517 }
518
519 fd = file_handle->fd;
520 if(bytesread!=NULL) {
521 *bytesread=0;
522 }
523
524 if(!(file_handle->fileaccess & GENERIC_READ) &&
525 !(file_handle->fileaccess & GENERIC_ALL)) {
526 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
527 __func__, handle, file_handle->fileaccess);
528
529 SetLastError (ERROR_ACCESS_DENIED);
530 return(FALSE);
531 }
532
533 do {
534 ret = read (fd, buffer, numbytes);
535 } while (ret == -1 && errno == EINTR &&
536 !mono_thread_info_is_interrupt_state (info));
537
538 if(ret==-1) {
539 gint err = errno;
540
541 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
542 handle, strerror(err));
543 SetLastError (_wapi_get_win32_file_error (err));
544 return(FALSE);
545 }
546
547 if (bytesread != NULL) {
548 *bytesread = ret;
549 }
550
551 return(TRUE);
552 }
553
554 static gboolean file_write(gpointer handle, gconstpointer buffer,
555 guint32 numbytes, guint32 *byteswritten,
556 WapiOverlapped *overlapped G_GNUC_UNUSED)
557 {
558 struct _WapiHandle_file *file_handle;
559 gboolean ok;
560 int ret, fd;
561 off_t current_pos = 0;
562 MonoThreadInfo *info = mono_thread_info_current ();
563
564 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
565 (gpointer *)&file_handle);
566 if(ok==FALSE) {
567 g_warning ("%s: error looking up file handle %p", __func__,
568 handle);
569 SetLastError (ERROR_INVALID_HANDLE);
570 return(FALSE);
571 }
572
573 fd = file_handle->fd;
574
575 if(byteswritten!=NULL) {
576 *byteswritten=0;
577 }
578
579 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
580 !(file_handle->fileaccess & GENERIC_ALL)) {
581 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
582
583 SetLastError (ERROR_ACCESS_DENIED);
584 return(FALSE);
585 }
586
587 if (lock_while_writing) {
588 /* Need to lock the region we're about to write to,
589 * because we only do advisory locking on POSIX
590 * systems
591 */
592 current_pos = lseek (fd, (off_t)0, SEEK_CUR);
593 if (current_pos == -1) {
594 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
595 handle, strerror (errno));
596 _wapi_set_last_error_from_errno ();
597 return(FALSE);
598 }
599
600 if (_wapi_lock_file_region (fd, current_pos,
601 numbytes) == FALSE) {
602 /* The error has already been set */
603 return(FALSE);
604 }
605 }
606
607 do {
608 ret = write (fd, buffer, numbytes);
609 } while (ret == -1 && errno == EINTR &&
610 !mono_thread_info_is_interrupt_state (info));
611
612 if (lock_while_writing) {
613 _wapi_unlock_file_region (fd, current_pos, numbytes);
614 }
615
616 if (ret == -1) {
617 if (errno == EINTR) {
618 ret = 0;
619 } else {
620 _wapi_set_last_error_from_errno ();
621
622 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
623 __func__, handle, strerror(errno));
624
625 return(FALSE);
626 }
627 }
628 if (byteswritten != NULL) {
629 *byteswritten = ret;
630 }
631 return(TRUE);
632 }
633
634 static gboolean file_flush(gpointer handle)
635 {
636 struct _WapiHandle_file *file_handle;
637 gboolean ok;
638 int ret, fd;
639
640 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
641 (gpointer *)&file_handle);
642 if(ok==FALSE) {
643 g_warning ("%s: error looking up file handle %p", __func__,
644 handle);
645 SetLastError (ERROR_INVALID_HANDLE);
646 return(FALSE);
647 }
648
649 fd = file_handle->fd;
650
651 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
652 !(file_handle->fileaccess & GENERIC_ALL)) {
653 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
654
655 SetLastError (ERROR_ACCESS_DENIED);
656 return(FALSE);
657 }
658
659 ret=fsync(fd);
660 if (ret==-1) {
661 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fsync of handle %p error: %s", __func__, handle,
662 strerror(errno));
663
664 _wapi_set_last_error_from_errno ();
665 return(FALSE);
666 }
667
668 return(TRUE);
669 }
670
671 static guint32 file_seek(gpointer handle, gint32 movedistance,
672 gint32 *highmovedistance, WapiSeekMethod method)
673 {
674 struct _WapiHandle_file *file_handle;
675 gboolean ok;
676 gint64 offset, newpos;
677 int whence, fd;
678 guint32 ret;
679
680 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
681 (gpointer *)&file_handle);
682 if(ok==FALSE) {
683 g_warning ("%s: error looking up file handle %p", __func__,
684 handle);
685 SetLastError (ERROR_INVALID_HANDLE);
686 return(INVALID_SET_FILE_POINTER);
687 }
688
689 fd = file_handle->fd;
690
691 if(!(file_handle->fileaccess & GENERIC_READ) &&
692 !(file_handle->fileaccess & GENERIC_WRITE) &&
693 !(file_handle->fileaccess & GENERIC_ALL)) {
694 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
695
696 SetLastError (ERROR_ACCESS_DENIED);
697 return(INVALID_SET_FILE_POINTER);
698 }
699
700 switch(method) {
701 case FILE_BEGIN:
702 whence=SEEK_SET;
703 break;
704 case FILE_CURRENT:
705 whence=SEEK_CUR;
706 break;
707 case FILE_END:
708 whence=SEEK_END;
709 break;
710 default:
711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: invalid seek type %d", __func__, method);
712
713 SetLastError (ERROR_INVALID_PARAMETER);
714 return(INVALID_SET_FILE_POINTER);
715 }
716
717 #ifdef HAVE_LARGE_FILE_SUPPORT
718 if(highmovedistance==NULL) {
719 offset=movedistance;
720 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting offset to %lld (low %d)", __func__,
721 offset, movedistance);
722 } else {
723 offset=((gint64) *highmovedistance << 32) | (guint32)movedistance;
724
725 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting offset to %lld 0x%llx (high %d 0x%x, low %d 0x%x)", __func__, offset, offset, *highmovedistance, *highmovedistance, movedistance, movedistance);
726 }
727 #else
728 offset=movedistance;
729 #endif
730
731 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: moving handle %p by %lld bytes from %d", __func__,
732 handle, (long long)offset, whence);
733
734 #ifdef PLATFORM_ANDROID
735 /* bionic doesn't support -D_FILE_OFFSET_BITS=64 */
736 newpos=lseek64(fd, offset, whence);
737 #else
738 newpos=lseek(fd, offset, whence);
739 #endif
740 if(newpos==-1) {
741 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek on handle %p returned error %s",
742 __func__, handle, strerror(errno));
743
744 _wapi_set_last_error_from_errno ();
745 return(INVALID_SET_FILE_POINTER);
746 }
747
748 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek returns %lld", __func__, newpos);
749
750 #ifdef HAVE_LARGE_FILE_SUPPORT
751 ret=newpos & 0xFFFFFFFF;
752 if(highmovedistance!=NULL) {
753 *highmovedistance=newpos>>32;
754 }
755 #else
756 ret=newpos;
757 if(highmovedistance!=NULL) {
758 /* Accurate, but potentially dodgy :-) */
759 *highmovedistance=0;
760 }
761 #endif
762
763 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: move of handle %p returning %d/%d", __func__,
764 handle, ret, highmovedistance==NULL?0:*highmovedistance);
765
766 return(ret);
767 }
768
769 static gboolean file_setendoffile(gpointer handle)
770 {
771 struct _WapiHandle_file *file_handle;
772 gboolean ok;
773 struct stat statbuf;
774 off_t pos;
775 int ret, fd;
776 MonoThreadInfo *info = mono_thread_info_current ();
777
778 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
779 (gpointer *)&file_handle);
780 if(ok==FALSE) {
781 g_warning ("%s: error looking up file handle %p", __func__,
782 handle);
783 SetLastError (ERROR_INVALID_HANDLE);
784 return(FALSE);
785 }
786 fd = file_handle->fd;
787
788 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
789 !(file_handle->fileaccess & GENERIC_ALL)) {
790 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
791
792 SetLastError (ERROR_ACCESS_DENIED);
793 return(FALSE);
794 }
795
796 /* Find the current file position, and the file length. If
797 * the file position is greater than the length, write to
798 * extend the file with a hole. If the file position is less
799 * than the length, truncate the file.
800 */
801
802 ret=fstat(fd, &statbuf);
803 if(ret==-1) {
804 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
805 handle, strerror(errno));
806
807 _wapi_set_last_error_from_errno ();
808 return(FALSE);
809 }
810
811 pos=lseek(fd, (off_t)0, SEEK_CUR);
812 if(pos==-1) {
813 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
814 handle, strerror(errno));
815
816 _wapi_set_last_error_from_errno ();
817 return(FALSE);
818 }
819
820 #ifdef FTRUNCATE_DOESNT_EXTEND
821 off_t size = statbuf.st_size;
822 /* I haven't bothered to write the configure.ac stuff for this
823 * because I don't know if any platform needs it. I'm leaving
824 * this code just in case though
825 */
826 if(pos>size) {
827 /* Extend the file. Use write() here, because some
828 * manuals say that ftruncate() behaviour is undefined
829 * when the file needs extending. The POSIX spec says
830 * that on XSI-conformant systems it extends, so if
831 * every system we care about conforms, then we can
832 * drop this write.
833 */
834 do {
835 ret = write (fd, "", 1);
836 } while (ret == -1 && errno == EINTR &&
837 !mono_thread_info_is_interrupt_state (info));
838
839 if(ret==-1) {
840 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p extend write failed: %s", __func__, handle, strerror(errno));
841
842 _wapi_set_last_error_from_errno ();
843 return(FALSE);
844 }
845
846 /* And put the file position back after the write */
847 ret = lseek (fd, pos, SEEK_SET);
848 if (ret == -1) {
849 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p second lseek failed: %s",
850 __func__, handle, strerror(errno));
851
852 _wapi_set_last_error_from_errno ();
853 return(FALSE);
854 }
855 }
856 #endif
857
858 /* Native Client has no ftruncate function, even in standalone sel_ldr. */
859 #ifndef __native_client__
860 /* always truncate, because the extend write() adds an extra
861 * byte to the end of the file
862 */
863 do {
864 ret=ftruncate(fd, pos);
865 }
866 while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
867 if(ret==-1) {
868 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ftruncate failed: %s", __func__,
869 handle, strerror(errno));
870
871 _wapi_set_last_error_from_errno ();
872 return(FALSE);
873 }
874 #endif
875
876 return(TRUE);
877 }
878
879 static guint32 file_getfilesize(gpointer handle, guint32 *highsize)
880 {
881 struct _WapiHandle_file *file_handle;
882 gboolean ok;
883 struct stat statbuf;
884 guint32 size;
885 int ret;
886 int fd;
887
888 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
889 (gpointer *)&file_handle);
890 if(ok==FALSE) {
891 g_warning ("%s: error looking up file handle %p", __func__,
892 handle);
893 SetLastError (ERROR_INVALID_HANDLE);
894 return(INVALID_FILE_SIZE);
895 }
896 fd = file_handle->fd;
897
898 if(!(file_handle->fileaccess & GENERIC_READ) &&
899 !(file_handle->fileaccess & GENERIC_WRITE) &&
900 !(file_handle->fileaccess & GENERIC_ALL)) {
901 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
902
903 SetLastError (ERROR_ACCESS_DENIED);
904 return(INVALID_FILE_SIZE);
905 }
906
907 /* If the file has a size with the low bits 0xFFFFFFFF the
908 * caller can't tell if this is an error, so clear the error
909 * value
910 */
911 SetLastError (ERROR_SUCCESS);
912
913 ret = fstat(fd, &statbuf);
914 if (ret == -1) {
915 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
916 handle, strerror(errno));
917
918 _wapi_set_last_error_from_errno ();
919 return(INVALID_FILE_SIZE);
920 }
921
922 /* fstat indicates block devices as zero-length, so go a different path */
923 #ifdef BLKGETSIZE64
924 if (S_ISBLK(statbuf.st_mode)) {
925 guint64 bigsize;
926 if (ioctl(fd, BLKGETSIZE64, &bigsize) < 0) {
927 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ioctl BLKGETSIZE64 failed: %s",
928 __func__, handle, strerror(errno));
929
930 _wapi_set_last_error_from_errno ();
931 return(INVALID_FILE_SIZE);
932 }
933
934 size = bigsize & 0xFFFFFFFF;
935 if (highsize != NULL) {
936 *highsize = bigsize>>32;
937 }
938
939 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning block device size %d/%d",
940 __func__, size, *highsize);
941
942 return(size);
943 }
944 #endif
945
946 #ifdef HAVE_LARGE_FILE_SUPPORT
947 size = statbuf.st_size & 0xFFFFFFFF;
948 if (highsize != NULL) {
949 *highsize = statbuf.st_size>>32;
950 }
951 #else
952 if (highsize != NULL) {
953 /* Accurate, but potentially dodgy :-) */
954 *highsize = 0;
955 }
956 size = statbuf.st_size;
957 #endif
958
959 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning size %d/%d", __func__, size, *highsize);
960
961 return(size);
962 }
963
964 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
965 WapiFileTime *last_access,
966 WapiFileTime *last_write)
967 {
968 struct _WapiHandle_file *file_handle;
969 gboolean ok;
970 struct stat statbuf;
971 guint64 create_ticks, access_ticks, write_ticks;
972 int ret, fd;
973
974 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
975 (gpointer *)&file_handle);
976 if(ok==FALSE) {
977 g_warning ("%s: error looking up file handle %p", __func__,
978 handle);
979 SetLastError (ERROR_INVALID_HANDLE);
980 return(FALSE);
981 }
982 fd = file_handle->fd;
983
984 if(!(file_handle->fileaccess & GENERIC_READ) &&
985 !(file_handle->fileaccess & GENERIC_ALL)) {
986 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
987 __func__, handle, file_handle->fileaccess);
988
989 SetLastError (ERROR_ACCESS_DENIED);
990 return(FALSE);
991 }
992
993 ret=fstat(fd, &statbuf);
994 if(ret==-1) {
995 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
996 strerror(errno));
997
998 _wapi_set_last_error_from_errno ();
999 return(FALSE);
1000 }
1001
1002 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: atime: %ld ctime: %ld mtime: %ld", __func__,
1003 statbuf.st_atime, statbuf.st_ctime,
1004 statbuf.st_mtime);
1005
1006 /* Try and guess a meaningful create time by using the older
1007 * of atime or ctime
1008 */
1009 /* The magic constant comes from msdn documentation
1010 * "Converting a time_t Value to a File Time"
1011 */
1012 if(statbuf.st_atime < statbuf.st_ctime) {
1013 create_ticks=((guint64)statbuf.st_atime*10000000)
1014 + 116444736000000000ULL;
1015 } else {
1016 create_ticks=((guint64)statbuf.st_ctime*10000000)
1017 + 116444736000000000ULL;
1018 }
1019
1020 access_ticks=((guint64)statbuf.st_atime*10000000)+116444736000000000ULL;
1021 write_ticks=((guint64)statbuf.st_mtime*10000000)+116444736000000000ULL;
1022
1023 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: aticks: %llu cticks: %llu wticks: %llu", __func__,
1024 access_ticks, create_ticks, write_ticks);
1025
1026 if(create_time!=NULL) {
1027 create_time->dwLowDateTime = create_ticks & 0xFFFFFFFF;
1028 create_time->dwHighDateTime = create_ticks >> 32;
1029 }
1030
1031 if(last_access!=NULL) {
1032 last_access->dwLowDateTime = access_ticks & 0xFFFFFFFF;
1033 last_access->dwHighDateTime = access_ticks >> 32;
1034 }
1035
1036 if(last_write!=NULL) {
1037 last_write->dwLowDateTime = write_ticks & 0xFFFFFFFF;
1038 last_write->dwHighDateTime = write_ticks >> 32;
1039 }
1040
1041 return(TRUE);
1042 }
1043
1044 static gboolean file_setfiletime(gpointer handle,
1045 const WapiFileTime *create_time G_GNUC_UNUSED,
1046 const WapiFileTime *last_access,
1047 const WapiFileTime *last_write)
1048 {
1049 struct _WapiHandle_file *file_handle;
1050 gboolean ok;
1051 struct utimbuf utbuf;
1052 struct stat statbuf;
1053 guint64 access_ticks, write_ticks;
1054 int ret, fd;
1055
1056 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
1057 (gpointer *)&file_handle);
1058 if(ok==FALSE) {
1059 g_warning ("%s: error looking up file handle %p", __func__,
1060 handle);
1061 SetLastError (ERROR_INVALID_HANDLE);
1062 return(FALSE);
1063 }
1064 fd = file_handle->fd;
1065
1066 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
1067 !(file_handle->fileaccess & GENERIC_ALL)) {
1068 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
1069
1070 SetLastError (ERROR_ACCESS_DENIED);
1071 return(FALSE);
1072 }
1073
1074 if(file_handle->filename == NULL) {
1075 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p unknown filename", __func__, handle);
1076
1077 SetLastError (ERROR_INVALID_HANDLE);
1078 return(FALSE);
1079 }
1080
1081 /* Get the current times, so we can put the same times back in
1082 * the event that one of the FileTime structs is NULL
1083 */
1084 ret=fstat (fd, &statbuf);
1085 if(ret==-1) {
1086 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
1087 strerror(errno));
1088
1089 SetLastError (ERROR_INVALID_PARAMETER);
1090 return(FALSE);
1091 }
1092
1093 if(last_access!=NULL) {
1094 access_ticks=((guint64)last_access->dwHighDateTime << 32) +
1095 last_access->dwLowDateTime;
1096 /* This is (time_t)0. We can actually go to INT_MIN,
1097 * but this will do for now.
1098 */
1099 if (access_ticks < 116444736000000000ULL) {
1100 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set access time too early",
1101 __func__);
1102 SetLastError (ERROR_INVALID_PARAMETER);
1103 return(FALSE);
1104 }
1105
1106 if (sizeof (utbuf.actime) == 4 && ((access_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1107 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time that is too big for a 32bits time_t",
1108 __func__);
1109 SetLastError (ERROR_INVALID_PARAMETER);
1110 return(FALSE);
1111 }
1112
1113 utbuf.actime=(access_ticks - 116444736000000000ULL) / 10000000;
1114 } else {
1115 utbuf.actime=statbuf.st_atime;
1116 }
1117
1118 if(last_write!=NULL) {
1119 write_ticks=((guint64)last_write->dwHighDateTime << 32) +
1120 last_write->dwLowDateTime;
1121 /* This is (time_t)0. We can actually go to INT_MIN,
1122 * but this will do for now.
1123 */
1124 if (write_ticks < 116444736000000000ULL) {
1125 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time too early",
1126 __func__);
1127 SetLastError (ERROR_INVALID_PARAMETER);
1128 return(FALSE);
1129 }
1130 if (sizeof (utbuf.modtime) == 4 && ((write_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1131 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time that is too big for a 32bits time_t",
1132 __func__);
1133 SetLastError (ERROR_INVALID_PARAMETER);
1134 return(FALSE);
1135 }
1136
1137 utbuf.modtime=(write_ticks - 116444736000000000ULL) / 10000000;
1138 } else {
1139 utbuf.modtime=statbuf.st_mtime;
1140 }
1141
1142 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting handle %p access %ld write %ld", __func__,
1143 handle, utbuf.actime, utbuf.modtime);
1144
1145 ret = _wapi_utime (file_handle->filename, &utbuf);
1146 if (ret == -1) {
1147 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p [%s] utime failed: %s", __func__,
1148 handle, file_handle->filename, strerror(errno));
1149
1150 SetLastError (ERROR_INVALID_PARAMETER);
1151 return(FALSE);
1152 }
1153
1154 return(TRUE);
1155 }
1156
1157 static void console_close (gpointer handle, gpointer data)
1158 {
1159 struct _WapiHandle_file *console_handle = (struct _WapiHandle_file *)data;
1160 int fd = console_handle->fd;
1161
1162 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing console handle %p", __func__, handle);
1163
1164 g_free (console_handle->filename);
1165
1166 if (fd > 2) {
1167 if (console_handle->share_info)
1168 _wapi_handle_share_release (console_handle->share_info);
1169 close (fd);
1170 }
1171 }
1172
1173 static void console_details (gpointer data)
1174 {
1175 file_details (data);
1176 }
1177
1178 static const gchar* console_typename (void)
1179 {
1180 return "Console";
1181 }
1182
1183 static gsize console_typesize (void)
1184 {
1185 return sizeof (struct _WapiHandle_file);
1186 }
1187
1188 static WapiFileType console_getfiletype(void)
1189 {
1190 return(FILE_TYPE_CHAR);
1191 }
1192
1193 static gboolean console_read(gpointer handle, gpointer buffer,
1194 guint32 numbytes, guint32 *bytesread,
1195 WapiOverlapped *overlapped G_GNUC_UNUSED)
1196 {
1197 struct _WapiHandle_file *console_handle;
1198 gboolean ok;
1199 int ret, fd;
1200 MonoThreadInfo *info = mono_thread_info_current ();
1201
1202 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1203 (gpointer *)&console_handle);
1204 if(ok==FALSE) {
1205 g_warning ("%s: error looking up console handle %p", __func__,
1206 handle);
1207 SetLastError (ERROR_INVALID_HANDLE);
1208 return(FALSE);
1209 }
1210 fd = console_handle->fd;
1211
1212 if(bytesread!=NULL) {
1213 *bytesread=0;
1214 }
1215
1216 if(!(console_handle->fileaccess & GENERIC_READ) &&
1217 !(console_handle->fileaccess & GENERIC_ALL)) {
1218 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1219 __func__, handle, console_handle->fileaccess);
1220
1221 SetLastError (ERROR_ACCESS_DENIED);
1222 return(FALSE);
1223 }
1224
1225 do {
1226 ret=read(fd, buffer, numbytes);
1227 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1228
1229 if(ret==-1) {
1230 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__, handle,
1231 strerror(errno));
1232
1233 _wapi_set_last_error_from_errno ();
1234 return(FALSE);
1235 }
1236
1237 if(bytesread!=NULL) {
1238 *bytesread=ret;
1239 }
1240
1241 return(TRUE);
1242 }
1243
1244 static gboolean console_write(gpointer handle, gconstpointer buffer,
1245 guint32 numbytes, guint32 *byteswritten,
1246 WapiOverlapped *overlapped G_GNUC_UNUSED)
1247 {
1248 struct _WapiHandle_file *console_handle;
1249 gboolean ok;
1250 int ret, fd;
1251 MonoThreadInfo *info = mono_thread_info_current ();
1252
1253 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1254 (gpointer *)&console_handle);
1255 if(ok==FALSE) {
1256 g_warning ("%s: error looking up console handle %p", __func__,
1257 handle);
1258 SetLastError (ERROR_INVALID_HANDLE);
1259 return(FALSE);
1260 }
1261 fd = console_handle->fd;
1262
1263 if(byteswritten!=NULL) {
1264 *byteswritten=0;
1265 }
1266
1267 if(!(console_handle->fileaccess & GENERIC_WRITE) &&
1268 !(console_handle->fileaccess & GENERIC_ALL)) {
1269 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, console_handle->fileaccess);
1270
1271 SetLastError (ERROR_ACCESS_DENIED);
1272 return(FALSE);
1273 }
1274
1275 do {
1276 ret = write(fd, buffer, numbytes);
1277 } while (ret == -1 && errno == EINTR &&
1278 !mono_thread_info_is_interrupt_state (info));
1279
1280 if (ret == -1) {
1281 if (errno == EINTR) {
1282 ret = 0;
1283 } else {
1284 _wapi_set_last_error_from_errno ();
1285
1286 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
1287 __func__, handle, strerror(errno));
1288
1289 return(FALSE);
1290 }
1291 }
1292 if(byteswritten!=NULL) {
1293 *byteswritten=ret;
1294 }
1295
1296 return(TRUE);
1297 }
1298
1299 static const gchar* find_typename (void)
1300 {
1301 return "Find";
1302 }
1303
1304 static gsize find_typesize (void)
1305 {
1306 return sizeof (struct _WapiHandle_find);
1307 }
1308
1309 static void pipe_close (gpointer handle, gpointer data)
1310 {
1311 struct _WapiHandle_file *pipe_handle = (struct _WapiHandle_file*)data;
1312 int fd = pipe_handle->fd;
1313
1314 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing pipe handle %p fd %d", __func__, handle, fd);
1315
1316 /* No filename with pipe handles */
1317
1318 if (pipe_handle->share_info)
1319 _wapi_handle_share_release (pipe_handle->share_info);
1320
1321 close (fd);
1322 }
1323
1324 static void pipe_details (gpointer data)
1325 {
1326 file_details (data);
1327 }
1328
1329 static const gchar* pipe_typename (void)
1330 {
1331 return "Pipe";
1332 }
1333
1334 static gsize pipe_typesize (void)
1335 {
1336 return sizeof (struct _WapiHandle_file);
1337 }
1338
1339 static WapiFileType pipe_getfiletype(void)
1340 {
1341 return(FILE_TYPE_PIPE);
1342 }
1343
1344 static gboolean pipe_read (gpointer handle, gpointer buffer,
1345 guint32 numbytes, guint32 *bytesread,
1346 WapiOverlapped *overlapped G_GNUC_UNUSED)
1347 {
1348 struct _WapiHandle_file *pipe_handle;
1349 gboolean ok;
1350 int ret, fd;
1351 MonoThreadInfo *info = mono_thread_info_current ();
1352
1353 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1354 (gpointer *)&pipe_handle);
1355 if(ok==FALSE) {
1356 g_warning ("%s: error looking up pipe handle %p", __func__,
1357 handle);
1358 SetLastError (ERROR_INVALID_HANDLE);
1359 return(FALSE);
1360 }
1361 fd = pipe_handle->fd;
1362
1363 if(bytesread!=NULL) {
1364 *bytesread=0;
1365 }
1366
1367 if(!(pipe_handle->fileaccess & GENERIC_READ) &&
1368 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1369 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1370 __func__, handle, pipe_handle->fileaccess);
1371
1372 SetLastError (ERROR_ACCESS_DENIED);
1373 return(FALSE);
1374 }
1375
1376 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: reading up to %d bytes from pipe %p", __func__,
1377 numbytes, handle);
1378
1379 do {
1380 ret=read(fd, buffer, numbytes);
1381 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1382
1383 if (ret == -1) {
1384 if (errno == EINTR) {
1385 ret = 0;
1386 } else {
1387 _wapi_set_last_error_from_errno ();
1388
1389 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
1390 handle, strerror(errno));
1391
1392 return(FALSE);
1393 }
1394 }
1395
1396 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read %d bytes from pipe %p", __func__, ret, handle);
1397
1398 if(bytesread!=NULL) {
1399 *bytesread=ret;
1400 }
1401
1402 return(TRUE);
1403 }
1404
1405 static gboolean pipe_write(gpointer handle, gconstpointer buffer,
1406 guint32 numbytes, guint32 *byteswritten,
1407 WapiOverlapped *overlapped G_GNUC_UNUSED)
1408 {
1409 struct _WapiHandle_file *pipe_handle;
1410 gboolean ok;
1411 int ret, fd;
1412 MonoThreadInfo *info = mono_thread_info_current ();
1413
1414 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1415 (gpointer *)&pipe_handle);
1416 if(ok==FALSE) {
1417 g_warning ("%s: error looking up pipe handle %p", __func__,
1418 handle);
1419 SetLastError (ERROR_INVALID_HANDLE);
1420 return(FALSE);
1421 }
1422 fd = pipe_handle->fd;
1423
1424 if(byteswritten!=NULL) {
1425 *byteswritten=0;
1426 }
1427
1428 if(!(pipe_handle->fileaccess & GENERIC_WRITE) &&
1429 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1430 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, pipe_handle->fileaccess);
1431
1432 SetLastError (ERROR_ACCESS_DENIED);
1433 return(FALSE);
1434 }
1435
1436 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: writing up to %d bytes to pipe %p", __func__, numbytes,
1437 handle);
1438
1439 do {
1440 ret = write (fd, buffer, numbytes);
1441 } while (ret == -1 && errno == EINTR &&
1442 !mono_thread_info_is_interrupt_state (info));
1443
1444 if (ret == -1) {
1445 if (errno == EINTR) {
1446 ret = 0;
1447 } else {
1448 _wapi_set_last_error_from_errno ();
1449
1450 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s", __func__,
1451 handle, strerror(errno));
1452
1453 return(FALSE);
1454 }
1455 }
1456 if(byteswritten!=NULL) {
1457 *byteswritten=ret;
1458 }
1459
1460 return(TRUE);
1461 }
1462
1463 static int convert_flags(guint32 fileaccess, guint32 createmode)
1464 {
1465 int flags=0;
1466
1467 switch(fileaccess) {
1468 case GENERIC_READ:
1469 flags=O_RDONLY;
1470 break;
1471 case GENERIC_WRITE:
1472 flags=O_WRONLY;
1473 break;
1474 case GENERIC_READ|GENERIC_WRITE:
1475 flags=O_RDWR;
1476 break;
1477 default:
1478 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown access type 0x%x", __func__,
1479 fileaccess);
1480 break;
1481 }
1482
1483 switch(createmode) {
1484 case CREATE_NEW:
1485 flags|=O_CREAT|O_EXCL;
1486 break;
1487 case CREATE_ALWAYS:
1488 flags|=O_CREAT|O_TRUNC;
1489 break;
1490 case OPEN_EXISTING:
1491 break;
1492 case OPEN_ALWAYS:
1493 flags|=O_CREAT;
1494 break;
1495 case TRUNCATE_EXISTING:
1496 flags|=O_TRUNC;
1497 break;
1498 default:
1499 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown create mode 0x%x", __func__,
1500 createmode);
1501 break;
1502 }
1503
1504 return(flags);
1505 }
1506
1507 #if 0 /* unused */
1508 static mode_t convert_perms(guint32 sharemode)
1509 {
1510 mode_t perms=0600;
1511
1512 if(sharemode&FILE_SHARE_READ) {
1513 perms|=044;
1514 }
1515 if(sharemode&FILE_SHARE_WRITE) {
1516 perms|=022;
1517 }
1518
1519 return(perms);
1520 }
1521 #endif
1522
1523 static gboolean share_allows_open (struct stat *statbuf, guint32 sharemode,
1524 guint32 fileaccess,
1525 struct _WapiFileShare **share_info)
1526 {
1527 gboolean file_already_shared;
1528 guint32 file_existing_share, file_existing_access;
1529
1530 file_already_shared = _wapi_handle_get_or_set_share (statbuf->st_dev, statbuf->st_ino, sharemode, fileaccess, &file_existing_share, &file_existing_access, share_info);
1531
1532 if (file_already_shared) {
1533 /* The reference to this share info was incremented
1534 * when we looked it up, so be careful to put it back
1535 * if we conclude we can't use this file.
1536 */
1537 if (file_existing_share == 0) {
1538 /* Quick and easy, no possibility to share */
1539 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing = NONE", __func__, fileaccess);
1540
1541 _wapi_handle_share_release (*share_info);
1542
1543 return(FALSE);
1544 }
1545
1546 if (((file_existing_share == FILE_SHARE_READ) &&
1547 (fileaccess != GENERIC_READ)) ||
1548 ((file_existing_share == FILE_SHARE_WRITE) &&
1549 (fileaccess != GENERIC_WRITE))) {
1550 /* New access mode doesn't match up */
1551 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing: 0x%x", __func__, fileaccess, file_existing_share);
1552
1553 _wapi_handle_share_release (*share_info);
1554
1555 return(FALSE);
1556 }
1557
1558 if (((file_existing_access & GENERIC_READ) &&
1559 !(sharemode & FILE_SHARE_READ)) ||
1560 ((file_existing_access & GENERIC_WRITE) &&
1561 !(sharemode & FILE_SHARE_WRITE))) {
1562 /* New share mode doesn't match up */
1563 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Access mode prevents open: requested share: 0x%x, file has access: 0x%x", __func__, sharemode, file_existing_access);
1564
1565 _wapi_handle_share_release (*share_info);
1566
1567 return(FALSE);
1568 }
1569 } else {
1570 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1571 }
1572
1573 return(TRUE);
1574 }
1575
1576
1577 static gboolean
1578 share_allows_delete (struct stat *statbuf, struct _WapiFileShare **share_info)
1579 {
1580 gboolean file_already_shared;
1581 guint32 file_existing_share, file_existing_access;
1582
1583 file_already_shared = _wapi_handle_get_or_set_share (statbuf->st_dev, statbuf->st_ino, FILE_SHARE_DELETE, GENERIC_READ, &file_existing_share, &file_existing_access, share_info);
1584
1585 if (file_already_shared) {
1586 /* The reference to this share info was incremented
1587 * when we looked it up, so be careful to put it back
1588 * if we conclude we can't use this file.
1589 */
1590 if (file_existing_share == 0) {
1591 /* Quick and easy, no possibility to share */
1592 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing = NONE", __func__, (*share_info)->access);
1593
1594 _wapi_handle_share_release (*share_info);
1595
1596 return(FALSE);
1597 }
1598
1599 if (!(file_existing_share & FILE_SHARE_DELETE)) {
1600 /* New access mode doesn't match up */
1601 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing: 0x%x", __func__, (*share_info)->access, file_existing_share);
1602
1603 _wapi_handle_share_release (*share_info);
1604
1605 return(FALSE);
1606 }
1607 } else {
1608 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1609 }
1610
1611 return(TRUE);
1612 }
1613
1614 /**
1615 * CreateFile:
1616 * @name: a pointer to a NULL-terminated unicode string, that names
1617 * the file or other object to create.
1618 * @fileaccess: specifies the file access mode
1619 * @sharemode: whether the file should be shared. This parameter is
1620 * currently ignored.
1621 * @security: Ignored for now.
1622 * @createmode: specifies whether to create a new file, whether to
1623 * overwrite an existing file, whether to truncate the file, etc.
1624 * @attrs: specifies file attributes and flags. On win32 attributes
1625 * are characteristics of the file, not the handle, and are ignored
1626 * when an existing file is opened. Flags give the library hints on
1627 * how to process a file to optimise performance.
1628 * @template: the handle of an open %GENERIC_READ file that specifies
1629 * attributes to apply to a newly created file, ignoring @attrs.
1630 * Normally this parameter is NULL. This parameter is ignored when an
1631 * existing file is opened.
1632 *
1633 * Creates a new file handle. This only applies to normal files:
1634 * pipes are handled by CreatePipe(), and console handles are created
1635 * with GetStdHandle().
1636 *
1637 * Return value: the new handle, or %INVALID_HANDLE_VALUE on error.
1638 */
1639 gpointer CreateFile(const gunichar2 *name, guint32 fileaccess,
1640 guint32 sharemode, WapiSecurityAttributes *security,
1641 guint32 createmode, guint32 attrs,
1642 gpointer template_ G_GNUC_UNUSED)
1643 {
1644 struct _WapiHandle_file file_handle = {0};
1645 gpointer handle;
1646 int flags=convert_flags(fileaccess, createmode);
1647 /*mode_t perms=convert_perms(sharemode);*/
1648 /* we don't use sharemode, because that relates to sharing of
1649 * the file when the file is open and is already handled by
1650 * other code, perms instead are the on-disk permissions and
1651 * this is a sane default.
1652 */
1653 mode_t perms=0666;
1654 gchar *filename;
1655 int fd, ret;
1656 MonoW32HandleType handle_type;
1657 struct stat statbuf;
1658
1659 if (attrs & FILE_ATTRIBUTE_TEMPORARY)
1660 perms = 0600;
1661
1662 if (attrs & FILE_ATTRIBUTE_ENCRYPTED){
1663 SetLastError (ERROR_ENCRYPTION_FAILED);
1664 return INVALID_HANDLE_VALUE;
1665 }
1666
1667 if (name == NULL) {
1668 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1669
1670 SetLastError (ERROR_INVALID_NAME);
1671 return(INVALID_HANDLE_VALUE);
1672 }
1673
1674 filename = mono_unicode_to_external (name);
1675 if (filename == NULL) {
1676 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1677
1678 SetLastError (ERROR_INVALID_NAME);
1679 return(INVALID_HANDLE_VALUE);
1680 }
1681
1682 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Opening %s with share 0x%x and access 0x%x", __func__,
1683 filename, sharemode, fileaccess);
1684
1685 fd = _wapi_open (filename, flags, perms);
1686
1687 /* If we were trying to open a directory with write permissions
1688 * (e.g. O_WRONLY or O_RDWR), this call will fail with
1689 * EISDIR. However, this is a bit bogus because calls to
1690 * manipulate the directory (e.g. SetFileTime) will still work on
1691 * the directory because they use other API calls
1692 * (e.g. utime()). Hence, if we failed with the EISDIR error, try
1693 * to open the directory again without write permission.
1694 */
1695 if (fd == -1 && errno == EISDIR)
1696 {
1697 /* Try again but don't try to make it writable */
1698 fd = _wapi_open (filename, flags & ~(O_RDWR|O_WRONLY), perms);
1699 }
1700
1701 if (fd == -1) {
1702 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error opening file %s: %s", __func__, filename,
1703 strerror(errno));
1704 _wapi_set_last_path_error_from_errno (NULL, filename);
1705 g_free (filename);
1706
1707 return(INVALID_HANDLE_VALUE);
1708 }
1709
1710 if (fd >= mono_w32handle_fd_reserve) {
1711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
1712
1713 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1714
1715 close (fd);
1716 g_free (filename);
1717
1718 return(INVALID_HANDLE_VALUE);
1719 }
1720
1721 ret = fstat (fd, &statbuf);
1722 if (ret == -1) {
1723 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fstat error of file %s: %s", __func__,
1724 filename, strerror (errno));
1725 _wapi_set_last_error_from_errno ();
1726 g_free (filename);
1727 close (fd);
1728
1729 return(INVALID_HANDLE_VALUE);
1730 }
1731 #ifdef __native_client__
1732 /* Workaround: Native Client currently returns the same fake inode
1733 * for all files, so do a simple hash on the filename so we don't
1734 * use the same share info for each file.
1735 */
1736 statbuf.st_ino = g_str_hash(filename);
1737 #endif
1738
1739 if (share_allows_open (&statbuf, sharemode, fileaccess,
1740 &file_handle.share_info) == FALSE) {
1741 SetLastError (ERROR_SHARING_VIOLATION);
1742 g_free (filename);
1743 close (fd);
1744
1745 return (INVALID_HANDLE_VALUE);
1746 }
1747 if (file_handle.share_info == NULL) {
1748 /* No space, so no more files can be opened */
1749 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: No space in the share table", __func__);
1750
1751 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1752 close (fd);
1753 g_free (filename);
1754
1755 return(INVALID_HANDLE_VALUE);
1756 }
1757
1758 file_handle.filename = filename;
1759
1760 if(security!=NULL) {
1761 //file_handle->security_attributes=_wapi_handle_scratch_store (
1762 //security, sizeof(WapiSecurityAttributes));
1763 }
1764
1765 file_handle.fd = fd;
1766 file_handle.fileaccess=fileaccess;
1767 file_handle.sharemode=sharemode;
1768 file_handle.attrs=attrs;
1769
1770 #ifdef HAVE_POSIX_FADVISE
1771 if (attrs & FILE_FLAG_SEQUENTIAL_SCAN)
1772 posix_fadvise (fd, 0, 0, POSIX_FADV_SEQUENTIAL);
1773 if (attrs & FILE_FLAG_RANDOM_ACCESS)
1774 posix_fadvise (fd, 0, 0, POSIX_FADV_RANDOM);
1775 #endif
1776
1777 #ifdef F_RDAHEAD
1778 if (attrs & FILE_FLAG_SEQUENTIAL_SCAN)
1779 fcntl(fd, F_RDAHEAD, 1);
1780 #endif
1781
1782 #ifndef S_ISFIFO
1783 #define S_ISFIFO(m) ((m & S_IFIFO) != 0)
1784 #endif
1785 if (S_ISFIFO (statbuf.st_mode)) {
1786 handle_type = MONO_W32HANDLE_PIPE;
1787 /* maintain invariant that pipes have no filename */
1788 file_handle.filename = NULL;
1789 g_free (filename);
1790 filename = NULL;
1791 } else if (S_ISCHR (statbuf.st_mode)) {
1792 handle_type = MONO_W32HANDLE_CONSOLE;
1793 } else {
1794 handle_type = MONO_W32HANDLE_FILE;
1795 }
1796
1797 handle = mono_w32handle_new_fd (handle_type, fd, &file_handle);
1798 if (handle == INVALID_HANDLE_VALUE) {
1799 g_warning ("%s: error creating file handle", __func__);
1800 g_free (filename);
1801 close (fd);
1802
1803 SetLastError (ERROR_GEN_FAILURE);
1804 return(INVALID_HANDLE_VALUE);
1805 }
1806
1807 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: returning handle %p", __func__, handle);
1808
1809 return(handle);
1810 }
1811
1812 /**
1813 * DeleteFile:
1814 * @name: a pointer to a NULL-terminated unicode string, that names
1815 * the file to be deleted.
1816 *
1817 * Deletes file @name.
1818 *
1819 * Return value: %TRUE on success, %FALSE otherwise.
1820 */
1821 gboolean DeleteFile(const gunichar2 *name)
1822 {
1823 gchar *filename;
1824 int retval;
1825 gboolean ret = FALSE;
1826 guint32 attrs;
1827 #if 0
1828 struct stat statbuf;
1829 struct _WapiFileShare *shareinfo;
1830 #endif
1831
1832 if(name==NULL) {
1833 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1834
1835 SetLastError (ERROR_INVALID_NAME);
1836 return(FALSE);
1837 }
1838
1839 filename=mono_unicode_to_external(name);
1840 if(filename==NULL) {
1841 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1842
1843 SetLastError (ERROR_INVALID_NAME);
1844 return(FALSE);
1845 }
1846
1847 attrs = GetFileAttributes (name);
1848 if (attrs == INVALID_FILE_ATTRIBUTES) {
1849 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file attributes error", __func__);
1850 /* Error set by GetFileAttributes() */
1851 g_free (filename);
1852 return(FALSE);
1853 }
1854
1855 #if 0
1856 /* Check to make sure sharing allows us to open the file for
1857 * writing. See bug 323389.
1858 *
1859 * Do the checks that don't need an open file descriptor, for
1860 * simplicity's sake. If we really have to do the full checks
1861 * then we can implement that later.
1862 */
1863 if (_wapi_stat (filename, &statbuf) < 0) {
1864 _wapi_set_last_path_error_from_errno (NULL, filename);
1865 g_free (filename);
1866 return(FALSE);
1867 }
1868
1869 if (share_allows_open (&statbuf, 0, GENERIC_WRITE,
1870 &shareinfo) == FALSE) {
1871 SetLastError (ERROR_SHARING_VIOLATION);
1872 g_free (filename);
1873 return FALSE;
1874 }
1875 if (shareinfo)
1876 _wapi_handle_share_release (shareinfo);
1877 #endif
1878
1879 retval = _wapi_unlink (filename);
1880
1881 if (retval == -1) {
1882 _wapi_set_last_path_error_from_errno (NULL, filename);
1883 } else {
1884 ret = TRUE;
1885 }
1886
1887 g_free(filename);
1888
1889 return(ret);
1890 }
1891
1892 /**
1893 * MoveFile:
1894 * @name: a pointer to a NULL-terminated unicode string, that names
1895 * the file to be moved.
1896 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
1897 * new name for the file.
1898 *
1899 * Renames file @name to @dest_name.
1900 * MoveFile sets ERROR_ALREADY_EXISTS if the destination exists, except
1901 * when it is the same file as the source. In that case it silently succeeds.
1902 *
1903 * Return value: %TRUE on success, %FALSE otherwise.
1904 */
1905 gboolean MoveFile (const gunichar2 *name, const gunichar2 *dest_name)
1906 {
1907 gchar *utf8_name, *utf8_dest_name;
1908 int result, errno_copy;
1909 struct stat stat_src, stat_dest;
1910 gboolean ret = FALSE;
1911 struct _WapiFileShare *shareinfo;
1912
1913 if(name==NULL) {
1914 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1915
1916 SetLastError (ERROR_INVALID_NAME);
1917 return(FALSE);
1918 }
1919
1920 utf8_name = mono_unicode_to_external (name);
1921 if (utf8_name == NULL) {
1922 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1923
1924 SetLastError (ERROR_INVALID_NAME);
1925 return FALSE;
1926 }
1927
1928 if(dest_name==NULL) {
1929 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1930
1931 g_free (utf8_name);
1932 SetLastError (ERROR_INVALID_NAME);
1933 return(FALSE);
1934 }
1935
1936 utf8_dest_name = mono_unicode_to_external (dest_name);
1937 if (utf8_dest_name == NULL) {
1938 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1939
1940 g_free (utf8_name);
1941 SetLastError (ERROR_INVALID_NAME);
1942 return FALSE;
1943 }
1944
1945 /*
1946 * In C# land we check for the existence of src, but not for dest.
1947 * We check it here and return the failure if dest exists and is not
1948 * the same file as src.
1949 */
1950 if (_wapi_stat (utf8_name, &stat_src) < 0) {
1951 if (errno != ENOENT || _wapi_lstat (utf8_name, &stat_src) < 0) {
1952 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
1953 g_free (utf8_name);
1954 g_free (utf8_dest_name);
1955 return FALSE;
1956 }
1957 }
1958
1959 if (!_wapi_stat (utf8_dest_name, &stat_dest)) {
1960 if (stat_dest.st_dev != stat_src.st_dev ||
1961 stat_dest.st_ino != stat_src.st_ino) {
1962 g_free (utf8_name);
1963 g_free (utf8_dest_name);
1964 SetLastError (ERROR_ALREADY_EXISTS);
1965 return FALSE;
1966 }
1967 }
1968
1969 /* Check to make that we have delete sharing permission.
1970 * See https://bugzilla.xamarin.com/show_bug.cgi?id=17009
1971 *
1972 * Do the checks that don't need an open file descriptor, for
1973 * simplicity's sake. If we really have to do the full checks
1974 * then we can implement that later.
1975 */
1976 if (share_allows_delete (&stat_src, &shareinfo) == FALSE) {
1977 SetLastError (ERROR_SHARING_VIOLATION);
1978 return FALSE;
1979 }
1980 if (shareinfo)
1981 _wapi_handle_share_release (shareinfo);
1982
1983 result = _wapi_rename (utf8_name, utf8_dest_name);
1984 errno_copy = errno;
1985
1986 if (result == -1) {
1987 switch(errno_copy) {
1988 case EEXIST:
1989 SetLastError (ERROR_ALREADY_EXISTS);
1990 break;
1991
1992 case EXDEV:
1993 /* Ignore here, it is dealt with below */
1994 break;
1995
1996 case ENOENT:
1997 /* We already know src exists. Must be dest that doesn't exist. */
1998 _wapi_set_last_path_error_from_errno (NULL, utf8_dest_name);
1999 break;
2000
2001 default:
2002 _wapi_set_last_error_from_errno ();
2003 }
2004 }
2005
2006 g_free (utf8_name);
2007 g_free (utf8_dest_name);
2008
2009 if (result != 0 && errno_copy == EXDEV) {
2010 if (S_ISDIR (stat_src.st_mode)) {
2011 SetLastError (ERROR_NOT_SAME_DEVICE);
2012 return FALSE;
2013 }
2014 /* Try a copy to the new location, and delete the source */
2015 if (CopyFile (name, dest_name, TRUE)==FALSE) {
2016 /* CopyFile will set the error */
2017 return(FALSE);
2018 }
2019
2020 return(DeleteFile (name));
2021 }
2022
2023 if (result == 0) {
2024 ret = TRUE;
2025 }
2026
2027 return(ret);
2028 }
2029
2030 static gboolean
2031 write_file (int src_fd, int dest_fd, struct stat *st_src, gboolean report_errors)
2032 {
2033 int remain, n;
2034 char *buf, *wbuf;
2035 int buf_size = st_src->st_blksize;
2036 MonoThreadInfo *info = mono_thread_info_current ();
2037
2038 buf_size = buf_size < 8192 ? 8192 : (buf_size > 65536 ? 65536 : buf_size);
2039 buf = (char *) g_malloc (buf_size);
2040
2041 for (;;) {
2042 remain = read (src_fd, buf, buf_size);
2043 if (remain < 0) {
2044 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2045 continue;
2046
2047 if (report_errors)
2048 _wapi_set_last_error_from_errno ();
2049
2050 g_free (buf);
2051 return FALSE;
2052 }
2053 if (remain == 0) {
2054 break;
2055 }
2056
2057 wbuf = buf;
2058 while (remain > 0) {
2059 if ((n = write (dest_fd, wbuf, remain)) < 0) {
2060 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2061 continue;
2062
2063 if (report_errors)
2064 _wapi_set_last_error_from_errno ();
2065 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write failed.", __func__);
2066 g_free (buf);
2067 return FALSE;
2068 }
2069
2070 remain -= n;
2071 wbuf += n;
2072 }
2073 }
2074
2075 g_free (buf);
2076 return TRUE ;
2077 }
2078
2079 /**
2080 * CopyFile:
2081 * @name: a pointer to a NULL-terminated unicode string, that names
2082 * the file to be copied.
2083 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
2084 * new name for the file.
2085 * @fail_if_exists: if TRUE and dest_name exists, the copy will fail.
2086 *
2087 * Copies file @name to @dest_name
2088 *
2089 * Return value: %TRUE on success, %FALSE otherwise.
2090 */
2091 gboolean CopyFile (const gunichar2 *name, const gunichar2 *dest_name,
2092 gboolean fail_if_exists)
2093 {
2094 gchar *utf8_src, *utf8_dest;
2095 int src_fd, dest_fd;
2096 struct stat st, dest_st;
2097 struct utimbuf dest_time;
2098 gboolean ret = TRUE;
2099 int ret_utime;
2100
2101 if(name==NULL) {
2102 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
2103
2104 SetLastError (ERROR_INVALID_NAME);
2105 return(FALSE);
2106 }
2107
2108 utf8_src = mono_unicode_to_external (name);
2109 if (utf8_src == NULL) {
2110 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of source returned NULL",
2111 __func__);
2112
2113 SetLastError (ERROR_INVALID_PARAMETER);
2114 return(FALSE);
2115 }
2116
2117 if(dest_name==NULL) {
2118 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: dest is NULL", __func__);
2119
2120 g_free (utf8_src);
2121 SetLastError (ERROR_INVALID_NAME);
2122 return(FALSE);
2123 }
2124
2125 utf8_dest = mono_unicode_to_external (dest_name);
2126 if (utf8_dest == NULL) {
2127 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of dest returned NULL",
2128 __func__);
2129
2130 SetLastError (ERROR_INVALID_PARAMETER);
2131
2132 g_free (utf8_src);
2133
2134 return(FALSE);
2135 }
2136
2137 src_fd = _wapi_open (utf8_src, O_RDONLY, 0);
2138 if (src_fd < 0) {
2139 _wapi_set_last_path_error_from_errno (NULL, utf8_src);
2140
2141 g_free (utf8_src);
2142 g_free (utf8_dest);
2143
2144 return(FALSE);
2145 }
2146
2147 if (fstat (src_fd, &st) < 0) {
2148 _wapi_set_last_error_from_errno ();
2149
2150 g_free (utf8_src);
2151 g_free (utf8_dest);
2152 close (src_fd);
2153
2154 return(FALSE);
2155 }
2156
2157 /* Before trying to open/create the dest, we need to report a 'file busy'
2158 * error if src and dest are actually the same file. We do the check here to take
2159 * advantage of the IOMAP capability */
2160 if (!_wapi_stat (utf8_dest, &dest_st) && st.st_dev == dest_st.st_dev &&
2161 st.st_ino == dest_st.st_ino) {
2162
2163 g_free (utf8_src);
2164 g_free (utf8_dest);
2165 close (src_fd);
2166
2167 SetLastError (ERROR_SHARING_VIOLATION);
2168 return (FALSE);
2169 }
2170
2171 if (fail_if_exists) {
2172 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_EXCL, st.st_mode);
2173 } else {
2174 /* FIXME: it kinda sucks that this code path potentially scans
2175 * the directory twice due to the weird SetLastError()
2176 * behavior. */
2177 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_TRUNC, st.st_mode);
2178 if (dest_fd < 0) {
2179 /* The file does not exist, try creating it */
2180 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_TRUNC, st.st_mode);
2181 } else {
2182 /* Apparently this error is set if we
2183 * overwrite the dest file
2184 */
2185 SetLastError (ERROR_ALREADY_EXISTS);
2186 }
2187 }
2188 if (dest_fd < 0) {
2189 _wapi_set_last_error_from_errno ();
2190
2191 g_free (utf8_src);
2192 g_free (utf8_dest);
2193 close (src_fd);
2194
2195 return(FALSE);
2196 }
2197
2198 if (!write_file (src_fd, dest_fd, &st, TRUE))
2199 ret = FALSE;
2200
2201 close (src_fd);
2202 close (dest_fd);
2203
2204 dest_time.modtime = st.st_mtime;
2205 dest_time.actime = st.st_atime;
2206 ret_utime = utime (utf8_dest, &dest_time);
2207 if (ret_utime == -1)
2208 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file [%s] utime failed: %s", __func__, utf8_dest, strerror(errno));
2209
2210 g_free (utf8_src);
2211 g_free (utf8_dest);
2212
2213 return ret;
2214 }
2215
2216 static gchar*
2217 convert_arg_to_utf8 (const gunichar2 *arg, const gchar *arg_name)
2218 {
2219 gchar *utf8_ret;
2220
2221 if (arg == NULL) {
2222 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: %s is NULL", __func__, arg_name);
2223 SetLastError (ERROR_INVALID_NAME);
2224 return NULL;
2225 }
2226
2227 utf8_ret = mono_unicode_to_external (arg);
2228 if (utf8_ret == NULL) {
2229 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of %s returned NULL",
2230 __func__, arg_name);
2231 SetLastError (ERROR_INVALID_PARAMETER);
2232 return NULL;
2233 }
2234
2235 return utf8_ret;
2236 }
2237
2238 gboolean
2239 ReplaceFile (const gunichar2 *replacedFileName, const gunichar2 *replacementFileName,
2240 const gunichar2 *backupFileName, guint32 replaceFlags,
2241 gpointer exclude, gpointer reserved)
2242 {
2243 int result, backup_fd = -1,replaced_fd = -1;
2244 gchar *utf8_replacedFileName, *utf8_replacementFileName = NULL, *utf8_backupFileName = NULL;
2245 struct stat stBackup;
2246 gboolean ret = FALSE;
2247
2248 if (!(utf8_replacedFileName = convert_arg_to_utf8 (replacedFileName, "replacedFileName")))
2249 return FALSE;
2250 if (!(utf8_replacementFileName = convert_arg_to_utf8 (replacementFileName, "replacementFileName")))
2251 goto replace_cleanup;
2252 if (backupFileName != NULL) {
2253 if (!(utf8_backupFileName = convert_arg_to_utf8 (backupFileName, "backupFileName")))
2254 goto replace_cleanup;
2255 }
2256
2257 if (utf8_backupFileName) {
2258 // Open the backup file for read so we can restore the file if an error occurs.
2259 backup_fd = _wapi_open (utf8_backupFileName, O_RDONLY, 0);
2260 result = _wapi_rename (utf8_replacedFileName, utf8_backupFileName);
2261 if (result == -1)
2262 goto replace_cleanup;
2263 }
2264
2265 result = _wapi_rename (utf8_replacementFileName, utf8_replacedFileName);
2266 if (result == -1) {
2267 _wapi_set_last_path_error_from_errno (NULL, utf8_replacementFileName);
2268 _wapi_rename (utf8_backupFileName, utf8_replacedFileName);
2269 if (backup_fd != -1 && !fstat (backup_fd, &stBackup)) {
2270 replaced_fd = _wapi_open (utf8_backupFileName, O_WRONLY | O_CREAT | O_TRUNC,
2271 stBackup.st_mode);
2272
2273 if (replaced_fd == -1)
2274 goto replace_cleanup;
2275
2276 write_file (backup_fd, replaced_fd, &stBackup, FALSE);
2277 }
2278
2279 goto replace_cleanup;
2280 }
2281
2282 ret = TRUE;
2283
2284 replace_cleanup:
2285 g_free (utf8_replacedFileName);
2286 g_free (utf8_replacementFileName);
2287 g_free (utf8_backupFileName);
2288 if (backup_fd != -1)
2289 close (backup_fd);
2290 if (replaced_fd != -1)
2291 close (replaced_fd);
2292 return ret;
2293 }
2294
2295 /**
2296 * GetStdHandle:
2297 * @stdhandle: specifies the file descriptor
2298 *
2299 * Returns a handle for stdin, stdout, or stderr. Always returns the
2300 * same handle for the same @stdhandle.
2301 *
2302 * Return value: the handle, or %INVALID_HANDLE_VALUE on error
2303 */
2304
2305 static mono_mutex_t stdhandle_mutex;
2306
2307 gpointer GetStdHandle(WapiStdHandle stdhandle)
2308 {
2309 struct _WapiHandle_file *file_handle;
2310 gpointer handle;
2311 int fd;
2312 const gchar *name;
2313 gboolean ok;
2314
2315 switch(stdhandle) {
2316 case STD_INPUT_HANDLE:
2317 fd = 0;
2318 name = "<stdin>";
2319 break;
2320
2321 case STD_OUTPUT_HANDLE:
2322 fd = 1;
2323 name = "<stdout>";
2324 break;
2325
2326 case STD_ERROR_HANDLE:
2327 fd = 2;
2328 name = "<stderr>";
2329 break;
2330
2331 default:
2332 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unknown standard handle type", __func__);
2333
2334 SetLastError (ERROR_INVALID_PARAMETER);
2335 return(INVALID_HANDLE_VALUE);
2336 }
2337
2338 handle = GINT_TO_POINTER (fd);
2339
2340 mono_os_mutex_lock (&stdhandle_mutex);
2341
2342 ok = mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
2343 (gpointer *)&file_handle);
2344 if (ok == FALSE) {
2345 /* Need to create this console handle */
2346 handle = _wapi_stdhandle_create (fd, name);
2347
2348 if (handle == INVALID_HANDLE_VALUE) {
2349 SetLastError (ERROR_NO_MORE_FILES);
2350 goto done;
2351 }
2352 } else {
2353 /* Add a reference to this handle */
2354 mono_w32handle_ref (handle);
2355 }
2356
2357 done:
2358 mono_os_mutex_unlock (&stdhandle_mutex);
2359
2360 return(handle);
2361 }
2362
2363 /**
2364 * ReadFile:
2365 * @handle: The file handle to read from. The handle must have
2366 * %GENERIC_READ access.
2367 * @buffer: The buffer to store read data in
2368 * @numbytes: The maximum number of bytes to read
2369 * @bytesread: The actual number of bytes read is stored here. This
2370 * value can be zero if the handle is positioned at the end of the
2371 * file.
2372 * @overlapped: points to a required %WapiOverlapped structure if
2373 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2374 * otherwise.
2375 *
2376 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2377 * function reads up to @numbytes bytes from the file from the current
2378 * file position, and stores them in @buffer. If there are not enough
2379 * bytes left in the file, just the amount available will be read.
2380 * The actual number of bytes read is stored in @bytesread.
2381
2382 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2383 * file position is ignored and the read position is taken from data
2384 * in the @overlapped structure.
2385 *
2386 * Return value: %TRUE if the read succeeds (even if no bytes were
2387 * read due to an attempt to read past the end of the file), %FALSE on
2388 * error.
2389 */
2390 gboolean ReadFile(gpointer handle, gpointer buffer, guint32 numbytes,
2391 guint32 *bytesread, WapiOverlapped *overlapped)
2392 {
2393 MonoW32HandleType type;
2394
2395 type = mono_w32handle_get_type (handle);
2396
2397 if(io_ops[type].readfile==NULL) {
2398 SetLastError (ERROR_INVALID_HANDLE);
2399 return(FALSE);
2400 }
2401
2402 return(io_ops[type].readfile (handle, buffer, numbytes, bytesread,
2403 overlapped));
2404 }
2405
2406 /**
2407 * WriteFile:
2408 * @handle: The file handle to write to. The handle must have
2409 * %GENERIC_WRITE access.
2410 * @buffer: The buffer to read data from.
2411 * @numbytes: The maximum number of bytes to write.
2412 * @byteswritten: The actual number of bytes written is stored here.
2413 * If the handle is positioned at the file end, the length of the file
2414 * is extended. This parameter may be %NULL.
2415 * @overlapped: points to a required %WapiOverlapped structure if
2416 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2417 * otherwise.
2418 *
2419 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2420 * function writes up to @numbytes bytes from @buffer to the file at
2421 * the current file position. If @handle is positioned at the end of
2422 * the file, the file is extended. The actual number of bytes written
2423 * is stored in @byteswritten.
2424 *
2425 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2426 * file position is ignored and the write position is taken from data
2427 * in the @overlapped structure.
2428 *
2429 * Return value: %TRUE if the write succeeds, %FALSE on error.
2430 */
2431 gboolean WriteFile(gpointer handle, gconstpointer buffer, guint32 numbytes,
2432 guint32 *byteswritten, WapiOverlapped *overlapped)
2433 {
2434 MonoW32HandleType type;
2435
2436 type = mono_w32handle_get_type (handle);
2437
2438 if(io_ops[type].writefile==NULL) {
2439 SetLastError (ERROR_INVALID_HANDLE);
2440 return(FALSE);
2441 }
2442
2443 return(io_ops[type].writefile (handle, buffer, numbytes, byteswritten,
2444 overlapped));
2445 }
2446
2447 /**
2448 * FlushFileBuffers:
2449 * @handle: Handle to open file. The handle must have
2450 * %GENERIC_WRITE access.
2451 *
2452 * Flushes buffers of the file and causes all unwritten data to
2453 * be written.
2454 *
2455 * Return value: %TRUE on success, %FALSE otherwise.
2456 */
2457 gboolean FlushFileBuffers(gpointer handle)
2458 {
2459 MonoW32HandleType type;
2460
2461 type = mono_w32handle_get_type (handle);
2462
2463 if(io_ops[type].flushfile==NULL) {
2464 SetLastError (ERROR_INVALID_HANDLE);
2465 return(FALSE);
2466 }
2467
2468 return(io_ops[type].flushfile (handle));
2469 }
2470
2471 /**
2472 * SetEndOfFile:
2473 * @handle: The file handle to set. The handle must have
2474 * %GENERIC_WRITE access.
2475 *
2476 * Moves the end-of-file position to the current position of the file
2477 * pointer. This function is used to truncate or extend a file.
2478 *
2479 * Return value: %TRUE on success, %FALSE otherwise.
2480 */
2481 gboolean SetEndOfFile(gpointer handle)
2482 {
2483 MonoW32HandleType type;
2484
2485 type = mono_w32handle_get_type (handle);
2486
2487 if (io_ops[type].setendoffile == NULL) {
2488 SetLastError (ERROR_INVALID_HANDLE);
2489 return(FALSE);
2490 }
2491
2492 return(io_ops[type].setendoffile (handle));
2493 }
2494
2495 /**
2496 * SetFilePointer:
2497 * @handle: The file handle to set. The handle must have
2498 * %GENERIC_READ or %GENERIC_WRITE access.
2499 * @movedistance: Low 32 bits of a signed value that specifies the
2500 * number of bytes to move the file pointer.
2501 * @highmovedistance: Pointer to the high 32 bits of a signed value
2502 * that specifies the number of bytes to move the file pointer, or
2503 * %NULL.
2504 * @method: The starting point for the file pointer move.
2505 *
2506 * Sets the file pointer of an open file.
2507 *
2508 * The distance to move the file pointer is calculated from
2509 * @movedistance and @highmovedistance: If @highmovedistance is %NULL,
2510 * @movedistance is the 32-bit signed value; otherwise, @movedistance
2511 * is the low 32 bits and @highmovedistance a pointer to the high 32
2512 * bits of a 64 bit signed value. A positive distance moves the file
2513 * pointer forward from the position specified by @method; a negative
2514 * distance moves the file pointer backward.
2515 *
2516 * If the library is compiled without large file support,
2517 * @highmovedistance is ignored and its value is set to zero on a
2518 * successful return.
2519 *
2520 * Return value: On success, the low 32 bits of the new file pointer.
2521 * If @highmovedistance is not %NULL, the high 32 bits of the new file
2522 * pointer are stored there. On failure, %INVALID_SET_FILE_POINTER.
2523 */
2524 guint32 SetFilePointer(gpointer handle, gint32 movedistance,
2525 gint32 *highmovedistance, WapiSeekMethod method)
2526 {
2527 MonoW32HandleType type;
2528
2529 type = mono_w32handle_get_type (handle);
2530
2531 if (io_ops[type].seek == NULL) {
2532 SetLastError (ERROR_INVALID_HANDLE);
2533 return(INVALID_SET_FILE_POINTER);
2534 }
2535
2536 return(io_ops[type].seek (handle, movedistance, highmovedistance,
2537 method));
2538 }
2539
2540 /**
2541 * GetFileType:
2542 * @handle: The file handle to test.
2543 *
2544 * Finds the type of file @handle.
2545 *
2546 * Return value: %FILE_TYPE_UNKNOWN - the type of the file @handle is
2547 * unknown. %FILE_TYPE_DISK - @handle is a disk file.
2548 * %FILE_TYPE_CHAR - @handle is a character device, such as a console.
2549 * %FILE_TYPE_PIPE - @handle is a named or anonymous pipe.
2550 */
2551 WapiFileType GetFileType(gpointer handle)
2552 {
2553 MonoW32HandleType type;
2554
2555 type = mono_w32handle_get_type (handle);
2556
2557 if (io_ops[type].getfiletype == NULL) {
2558 SetLastError (ERROR_INVALID_HANDLE);
2559 return(FILE_TYPE_UNKNOWN);
2560 }
2561
2562 return(io_ops[type].getfiletype ());
2563 }
2564
2565 /**
2566 * GetFileSize:
2567 * @handle: The file handle to query. The handle must have
2568 * %GENERIC_READ or %GENERIC_WRITE access.
2569 * @highsize: If non-%NULL, the high 32 bits of the file size are
2570 * stored here.
2571 *
2572 * Retrieves the size of the file @handle.
2573 *
2574 * If the library is compiled without large file support, @highsize
2575 * has its value set to zero on a successful return.
2576 *
2577 * Return value: On success, the low 32 bits of the file size. If
2578 * @highsize is non-%NULL then the high 32 bits of the file size are
2579 * stored here. On failure %INVALID_FILE_SIZE is returned.
2580 */
2581 guint32 GetFileSize(gpointer handle, guint32 *highsize)
2582 {
2583 MonoW32HandleType type;
2584
2585 type = mono_w32handle_get_type (handle);
2586
2587 if (io_ops[type].getfilesize == NULL) {
2588 SetLastError (ERROR_INVALID_HANDLE);
2589 return(INVALID_FILE_SIZE);
2590 }
2591
2592 return(io_ops[type].getfilesize (handle, highsize));
2593 }
2594
2595 /**
2596 * GetFileTime:
2597 * @handle: The file handle to query. The handle must have
2598 * %GENERIC_READ access.
2599 * @create_time: Points to a %WapiFileTime structure to receive the
2600 * number of ticks since the epoch that file was created. May be
2601 * %NULL.
2602 * @last_access: Points to a %WapiFileTime structure to receive the
2603 * number of ticks since the epoch when file was last accessed. May be
2604 * %NULL.
2605 * @last_write: Points to a %WapiFileTime structure to receive the
2606 * number of ticks since the epoch when file was last written to. May
2607 * be %NULL.
2608 *
2609 * Finds the number of ticks since the epoch that the file referenced
2610 * by @handle was created, last accessed and last modified. A tick is
2611 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2612 * GMT.
2613 *
2614 * Create time isn't recorded on POSIX file systems or reported by
2615 * stat(2), so that time is guessed by returning the oldest of the
2616 * other times.
2617 *
2618 * Return value: %TRUE on success, %FALSE otherwise.
2619 */
2620 gboolean GetFileTime(gpointer handle, WapiFileTime *create_time,
2621 WapiFileTime *last_access, WapiFileTime *last_write)
2622 {
2623 MonoW32HandleType type;
2624
2625 type = mono_w32handle_get_type (handle);
2626
2627 if (io_ops[type].getfiletime == NULL) {
2628 SetLastError (ERROR_INVALID_HANDLE);
2629 return(FALSE);
2630 }
2631
2632 return(io_ops[type].getfiletime (handle, create_time, last_access,
2633 last_write));
2634 }
2635
2636 /**
2637 * SetFileTime:
2638 * @handle: The file handle to set. The handle must have
2639 * %GENERIC_WRITE access.
2640 * @create_time: Points to a %WapiFileTime structure that contains the
2641 * number of ticks since the epoch that the file was created. May be
2642 * %NULL.
2643 * @last_access: Points to a %WapiFileTime structure that contains the
2644 * number of ticks since the epoch when the file was last accessed.
2645 * May be %NULL.
2646 * @last_write: Points to a %WapiFileTime structure that contains the
2647 * number of ticks since the epoch when the file was last written to.
2648 * May be %NULL.
2649 *
2650 * Sets the number of ticks since the epoch that the file referenced
2651 * by @handle was created, last accessed or last modified. A tick is
2652 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2653 * GMT.
2654 *
2655 * Create time isn't recorded on POSIX file systems, and is ignored.
2656 *
2657 * Return value: %TRUE on success, %FALSE otherwise.
2658 */
2659 gboolean SetFileTime(gpointer handle, const WapiFileTime *create_time,
2660 const WapiFileTime *last_access,
2661 const WapiFileTime *last_write)
2662 {
2663 MonoW32HandleType type;
2664
2665 type = mono_w32handle_get_type (handle);
2666
2667 if (io_ops[type].setfiletime == NULL) {
2668 SetLastError (ERROR_INVALID_HANDLE);
2669 return(FALSE);
2670 }
2671
2672 return(io_ops[type].setfiletime (handle, create_time, last_access,
2673 last_write));
2674 }
2675
2676 /* A tick is a 100-nanosecond interval. File time epoch is Midnight,
2677 * January 1 1601 GMT
2678 */
2679
2680 #define TICKS_PER_MILLISECOND 10000L
2681 #define TICKS_PER_SECOND 10000000L
2682 #define TICKS_PER_MINUTE 600000000L
2683 #define TICKS_PER_HOUR 36000000000LL
2684 #define TICKS_PER_DAY 864000000000LL
2685
2686 #define isleap(y) ((y) % 4 == 0 && ((y) % 100 != 0 || (y) % 400 == 0))
2687
2688 static const guint16 mon_yday[2][13]={
2689 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
2690 {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
2691 };
2692
2693 /**
2694 * FileTimeToSystemTime:
2695 * @file_time: Points to a %WapiFileTime structure that contains the
2696 * number of ticks to convert.
2697 * @system_time: Points to a %WapiSystemTime structure to receive the
2698 * broken-out time.
2699 *
2700 * Converts a tick count into broken-out time values.
2701 *
2702 * Return value: %TRUE on success, %FALSE otherwise.
2703 */
2704 gboolean FileTimeToSystemTime(const WapiFileTime *file_time,
2705 WapiSystemTime *system_time)
2706 {
2707 gint64 file_ticks, totaldays, rem, y;
2708 const guint16 *ip;
2709
2710 if(system_time==NULL) {
2711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: system_time NULL", __func__);
2712
2713 SetLastError (ERROR_INVALID_PARAMETER);
2714 return(FALSE);
2715 }
2716
2717 file_ticks=((gint64)file_time->dwHighDateTime << 32) +
2718 file_time->dwLowDateTime;
2719
2720 /* Really compares if file_ticks>=0x8000000000000000
2721 * (LLONG_MAX+1) but we're working with a signed value for the
2722 * year and day calculation to work later
2723 */
2724 if(file_ticks<0) {
2725 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file_time too big", __func__);
2726
2727 SetLastError (ERROR_INVALID_PARAMETER);
2728 return(FALSE);
2729 }
2730
2731 totaldays=(file_ticks / TICKS_PER_DAY);
2732 rem = file_ticks % TICKS_PER_DAY;
2733 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld rem: %lld", __func__, totaldays, rem);
2734
2735 system_time->wHour=rem/TICKS_PER_HOUR;
2736 rem %= TICKS_PER_HOUR;
2737 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Hour: %d rem: %lld", __func__, system_time->wHour, rem);
2738
2739 system_time->wMinute = rem / TICKS_PER_MINUTE;
2740 rem %= TICKS_PER_MINUTE;
2741 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Minute: %d rem: %lld", __func__, system_time->wMinute,
2742 rem);
2743
2744 system_time->wSecond = rem / TICKS_PER_SECOND;
2745 rem %= TICKS_PER_SECOND;
2746 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Second: %d rem: %lld", __func__, system_time->wSecond,
2747 rem);
2748
2749 system_time->wMilliseconds = rem / TICKS_PER_MILLISECOND;
2750 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Milliseconds: %d", __func__,
2751 system_time->wMilliseconds);
2752
2753 /* January 1, 1601 was a Monday, according to Emacs calendar */
2754 system_time->wDayOfWeek = ((1 + totaldays) % 7) + 1;
2755 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day of week: %d", __func__, system_time->wDayOfWeek);
2756
2757 /* This algorithm to find year and month given days from epoch
2758 * from glibc
2759 */
2760 y=1601;
2761
2762 #define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
2763 #define LEAPS_THRU_END_OF(y) (DIV(y, 4) - DIV (y, 100) + DIV (y, 400))
2764
2765 while(totaldays < 0 || totaldays >= (isleap(y)?366:365)) {
2766 /* Guess a corrected year, assuming 365 days per year */
2767 gint64 yg = y + totaldays / 365 - (totaldays % 365 < 0);
2768 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld yg: %lld y: %lld", __func__,
2769 totaldays, yg,
2770 y);
2771 g_message("%s: LEAPS(yg): %lld LEAPS(y): %lld", __func__,
2772 LEAPS_THRU_END_OF(yg-1), LEAPS_THRU_END_OF(y-1));
2773
2774 /* Adjust days and y to match the guessed year. */
2775 totaldays -= ((yg - y) * 365
2776 + LEAPS_THRU_END_OF (yg - 1)
2777 - LEAPS_THRU_END_OF (y - 1));
2778 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2779 y = yg;
2780 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: y: %lld", __func__, y);
2781 }
2782
2783 system_time->wYear = y;
2784 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Year: %d", __func__, system_time->wYear);
2785
2786 ip = mon_yday[isleap(y)];
2787
2788 for(y=11; totaldays < ip[y]; --y) {
2789 continue;
2790 }
2791 totaldays-=ip[y];
2792 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2793
2794 system_time->wMonth = y + 1;
2795 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Month: %d", __func__, system_time->wMonth);
2796
2797 system_time->wDay = totaldays + 1;
2798 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day: %d", __func__, system_time->wDay);
2799
2800 return(TRUE);
2801 }
2802
2803 gpointer FindFirstFile (const gunichar2 *pattern, WapiFindData *find_data)
2804 {
2805 struct _WapiHandle_find find_handle = {0};
2806 gpointer handle;
2807 gchar *utf8_pattern = NULL, *dir_part, *entry_part;
2808 int result;
2809
2810 if (pattern == NULL) {
2811 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: pattern is NULL", __func__);
2812
2813 SetLastError (ERROR_PATH_NOT_FOUND);
2814 return(INVALID_HANDLE_VALUE);
2815 }
2816
2817 utf8_pattern = mono_unicode_to_external (pattern);
2818 if (utf8_pattern == NULL) {
2819 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
2820
2821 SetLastError (ERROR_INVALID_NAME);
2822 return(INVALID_HANDLE_VALUE);
2823 }
2824
2825 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: looking for [%s]", __func__, utf8_pattern);
2826
2827 /* Figure out which bit of the pattern is the directory */
2828 dir_part = _wapi_dirname (utf8_pattern);
2829 entry_part = _wapi_basename (utf8_pattern);
2830
2831 #if 0
2832 /* Don't do this check for now, it breaks if directories
2833 * really do have metachars in their names (see bug 58116).
2834 * FIXME: Figure out a better solution to keep some checks...
2835 */
2836 if (strchr (dir_part, '*') || strchr (dir_part, '?')) {
2837 SetLastError (ERROR_INVALID_NAME);
2838 g_free (dir_part);
2839 g_free (entry_part);
2840 g_free (utf8_pattern);
2841 return(INVALID_HANDLE_VALUE);
2842 }
2843 #endif
2844
2845 /* The pattern can specify a directory or a set of files.
2846 *
2847 * The pattern can have wildcard characters ? and *, but only
2848 * in the section after the last directory delimiter. (Return
2849 * ERROR_INVALID_NAME if there are wildcards in earlier path
2850 * sections.) "*" has the usual 0-or-more chars meaning. "?"
2851 * means "match one character", "??" seems to mean "match one
2852 * or two characters", "???" seems to mean "match one, two or
2853 * three characters", etc. Windows will also try and match
2854 * the mangled "short name" of files, so 8 character patterns
2855 * with wildcards will show some surprising results.
2856 *
2857 * All the written documentation I can find says that '?'
2858 * should only match one character, and doesn't mention '??',
2859 * '???' etc. I'm going to assume that the strict behaviour
2860 * (ie '???' means three and only three characters) is the
2861 * correct one, because that lets me use fnmatch(3) rather
2862 * than mess around with regexes.
2863 */
2864
2865 find_handle.namelist = NULL;
2866 result = _wapi_io_scandir (dir_part, entry_part,
2867 &find_handle.namelist);
2868
2869 if (result == 0) {
2870 /* No files, which windows seems to call
2871 * FILE_NOT_FOUND
2872 */
2873 SetLastError (ERROR_FILE_NOT_FOUND);
2874 g_free (utf8_pattern);
2875 g_free (entry_part);
2876 g_free (dir_part);
2877 return (INVALID_HANDLE_VALUE);
2878 }
2879
2880 if (result < 0) {
2881 _wapi_set_last_path_error_from_errno (dir_part, NULL);
2882 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: scandir error: %s", __func__, g_strerror (errno));
2883 g_free (utf8_pattern);
2884 g_free (entry_part);
2885 g_free (dir_part);
2886 return (INVALID_HANDLE_VALUE);
2887 }
2888
2889 g_free (utf8_pattern);
2890 g_free (entry_part);
2891
2892 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Got %d matches", __func__, result);
2893
2894 find_handle.dir_part = dir_part;
2895 find_handle.num = result;
2896 find_handle.count = 0;
2897
2898 handle = mono_w32handle_new (MONO_W32HANDLE_FIND, &find_handle);
2899 if (handle == INVALID_HANDLE_VALUE) {
2900 g_warning ("%s: error creating find handle", __func__);
2901 g_free (dir_part);
2902 g_free (entry_part);
2903 g_free (utf8_pattern);
2904 SetLastError (ERROR_GEN_FAILURE);
2905
2906 return(INVALID_HANDLE_VALUE);
2907 }
2908
2909 if (handle != INVALID_HANDLE_VALUE &&
2910 !FindNextFile (handle, find_data)) {
2911 FindClose (handle);
2912 SetLastError (ERROR_NO_MORE_FILES);
2913 handle = INVALID_HANDLE_VALUE;
2914 }
2915
2916 return (handle);
2917 }
2918
2919 gboolean FindNextFile (gpointer handle, WapiFindData *find_data)
2920 {
2921 struct _WapiHandle_find *find_handle;
2922 gboolean ok;
2923 struct stat buf, linkbuf;
2924 int result;
2925 gchar *filename;
2926 gchar *utf8_filename, *utf8_basename;
2927 gunichar2 *utf16_basename;
2928 time_t create_time;
2929 glong bytes;
2930 gboolean ret = FALSE;
2931
2932 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
2933 (gpointer *)&find_handle);
2934 if(ok==FALSE) {
2935 g_warning ("%s: error looking up find handle %p", __func__,
2936 handle);
2937 SetLastError (ERROR_INVALID_HANDLE);
2938 return(FALSE);
2939 }
2940
2941 mono_w32handle_lock_handle (handle);
2942
2943 retry:
2944 if (find_handle->count >= find_handle->num) {
2945 SetLastError (ERROR_NO_MORE_FILES);
2946 goto cleanup;
2947 }
2948
2949 /* stat next match */
2950
2951 filename = g_build_filename (find_handle->dir_part, find_handle->namelist[find_handle->count ++], NULL);
2952
2953 result = _wapi_stat (filename, &buf);
2954 if (result == -1 && errno == ENOENT) {
2955 /* Might be a dangling symlink */
2956 result = _wapi_lstat (filename, &buf);
2957 }
2958
2959 if (result != 0) {
2960 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: stat failed: %s", __func__, filename);
2961
2962 g_free (filename);
2963 goto retry;
2964 }
2965
2966 #ifndef __native_client__
2967 result = _wapi_lstat (filename, &linkbuf);
2968 if (result != 0) {
2969 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lstat failed: %s", __func__, filename);
2970
2971 g_free (filename);
2972 goto retry;
2973 }
2974 #endif
2975
2976 utf8_filename = mono_utf8_from_external (filename);
2977 if (utf8_filename == NULL) {
2978 /* We couldn't turn this filename into utf8 (eg the
2979 * encoding of the name wasn't convertible), so just
2980 * ignore it.
2981 */
2982 g_warning ("%s: Bad encoding for '%s'\nConsider using MONO_EXTERNAL_ENCODINGS\n", __func__, filename);
2983
2984 g_free (filename);
2985 goto retry;
2986 }
2987 g_free (filename);
2988
2989 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Found [%s]", __func__, utf8_filename);
2990
2991 /* fill data block */
2992
2993 if (buf.st_mtime < buf.st_ctime)
2994 create_time = buf.st_mtime;
2995 else
2996 create_time = buf.st_ctime;
2997
2998 #ifdef __native_client__
2999 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, NULL);
3000 #else
3001 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, &linkbuf);
3002 #endif
3003
3004 time_t_to_filetime (create_time, &find_data->ftCreationTime);
3005 time_t_to_filetime (buf.st_atime, &find_data->ftLastAccessTime);
3006 time_t_to_filetime (buf.st_mtime, &find_data->ftLastWriteTime);
3007
3008 if (find_data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
3009 find_data->nFileSizeHigh = 0;
3010 find_data->nFileSizeLow = 0;
3011 } else {
3012 find_data->nFileSizeHigh = buf.st_size >> 32;
3013 find_data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3014 }
3015
3016 find_data->dwReserved0 = 0;
3017 find_data->dwReserved1 = 0;
3018
3019 utf8_basename = _wapi_basename (utf8_filename);
3020 utf16_basename = g_utf8_to_utf16 (utf8_basename, -1, NULL, &bytes,
3021 NULL);
3022 if(utf16_basename==NULL) {
3023 g_free (utf8_basename);
3024 g_free (utf8_filename);
3025 goto retry;
3026 }
3027 ret = TRUE;
3028
3029 /* utf16 is 2 * utf8 */
3030 bytes *= 2;
3031
3032 memset (find_data->cFileName, '\0', (MAX_PATH*2));
3033
3034 /* Truncating a utf16 string like this might leave the last
3035 * char incomplete
3036 */
3037 memcpy (find_data->cFileName, utf16_basename,
3038 bytes<(MAX_PATH*2)-2?bytes:(MAX_PATH*2)-2);
3039
3040 find_data->cAlternateFileName [0] = 0; /* not used */
3041
3042 g_free (utf8_basename);
3043 g_free (utf8_filename);
3044 g_free (utf16_basename);
3045
3046 cleanup:
3047 mono_w32handle_unlock_handle (handle);
3048
3049 return(ret);
3050 }
3051
3052 /**
3053 * FindClose:
3054 * @wapi_handle: the find handle to close.
3055 *
3056 * Closes find handle @wapi_handle
3057 *
3058 * Return value: %TRUE on success, %FALSE otherwise.
3059 */
3060 gboolean FindClose (gpointer handle)
3061 {
3062 struct _WapiHandle_find *find_handle;
3063 gboolean ok;
3064
3065 if (handle == NULL) {
3066 SetLastError (ERROR_INVALID_HANDLE);
3067 return(FALSE);
3068 }
3069
3070 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
3071 (gpointer *)&find_handle);
3072 if(ok==FALSE) {
3073 g_warning ("%s: error looking up find handle %p", __func__,
3074 handle);
3075 SetLastError (ERROR_INVALID_HANDLE);
3076 return(FALSE);
3077 }
3078
3079 mono_w32handle_lock_handle (handle);
3080
3081 g_strfreev (find_handle->namelist);
3082 g_free (find_handle->dir_part);
3083
3084 mono_w32handle_unlock_handle (handle);
3085
3086 mono_w32handle_unref (handle);
3087
3088 return(TRUE);
3089 }
3090
3091 /**
3092 * CreateDirectory:
3093 * @name: a pointer to a NULL-terminated unicode string, that names
3094 * the directory to be created.
3095 * @security: ignored for now
3096 *
3097 * Creates directory @name
3098 *
3099 * Return value: %TRUE on success, %FALSE otherwise.
3100 */
3101 gboolean CreateDirectory (const gunichar2 *name,
3102 WapiSecurityAttributes *security)
3103 {
3104 gchar *utf8_name;
3105 int result;
3106
3107 if (name == NULL) {
3108 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3109
3110 SetLastError (ERROR_INVALID_NAME);
3111 return(FALSE);
3112 }
3113
3114 utf8_name = mono_unicode_to_external (name);
3115 if (utf8_name == NULL) {
3116 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3117
3118 SetLastError (ERROR_INVALID_NAME);
3119 return FALSE;
3120 }
3121
3122 result = _wapi_mkdir (utf8_name, 0777);
3123
3124 if (result == 0) {
3125 g_free (utf8_name);
3126 return TRUE;
3127 }
3128
3129 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3130 g_free (utf8_name);
3131 return FALSE;
3132 }
3133
3134 /**
3135 * RemoveDirectory:
3136 * @name: a pointer to a NULL-terminated unicode string, that names
3137 * the directory to be removed.
3138 *
3139 * Removes directory @name
3140 *
3141 * Return value: %TRUE on success, %FALSE otherwise.
3142 */
3143 gboolean RemoveDirectory (const gunichar2 *name)
3144 {
3145 gchar *utf8_name;
3146 int result;
3147
3148 if (name == NULL) {
3149 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3150
3151 SetLastError (ERROR_INVALID_NAME);
3152 return(FALSE);
3153 }
3154
3155 utf8_name = mono_unicode_to_external (name);
3156 if (utf8_name == NULL) {
3157 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3158
3159 SetLastError (ERROR_INVALID_NAME);
3160 return FALSE;
3161 }
3162
3163 result = _wapi_rmdir (utf8_name);
3164 if (result == -1) {
3165 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3166 g_free (utf8_name);
3167
3168 return(FALSE);
3169 }
3170 g_free (utf8_name);
3171
3172 return(TRUE);
3173 }
3174
3175 /**
3176 * GetFileAttributes:
3177 * @name: a pointer to a NULL-terminated unicode filename.
3178 *
3179 * Gets the attributes for @name;
3180 *
3181 * Return value: %INVALID_FILE_ATTRIBUTES on failure
3182 */
3183 guint32 GetFileAttributes (const gunichar2 *name)
3184 {
3185 gchar *utf8_name;
3186 struct stat buf, linkbuf;
3187 int result;
3188 guint32 ret;
3189
3190 if (name == NULL) {
3191 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3192
3193 SetLastError (ERROR_INVALID_NAME);
3194 return(FALSE);
3195 }
3196
3197 utf8_name = mono_unicode_to_external (name);
3198 if (utf8_name == NULL) {
3199 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3200
3201 SetLastError (ERROR_INVALID_PARAMETER);
3202 return (INVALID_FILE_ATTRIBUTES);
3203 }
3204
3205 result = _wapi_stat (utf8_name, &buf);
3206 if (result == -1 && errno == ENOENT) {
3207 /* Might be a dangling symlink... */
3208 result = _wapi_lstat (utf8_name, &buf);
3209 }
3210
3211 if (result != 0) {
3212 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3213 g_free (utf8_name);
3214 return (INVALID_FILE_ATTRIBUTES);
3215 }
3216
3217 #ifndef __native_client__
3218 result = _wapi_lstat (utf8_name, &linkbuf);
3219 if (result != 0) {
3220 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3221 g_free (utf8_name);
3222 return (INVALID_FILE_ATTRIBUTES);
3223 }
3224 #endif
3225
3226 #ifdef __native_client__
3227 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, NULL);
3228 #else
3229 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, &linkbuf);
3230 #endif
3231
3232 g_free (utf8_name);
3233
3234 return(ret);
3235 }
3236
3237 /**
3238 * GetFileAttributesEx:
3239 * @name: a pointer to a NULL-terminated unicode filename.
3240 * @level: must be GetFileExInfoStandard
3241 * @info: pointer to a WapiFileAttributesData structure
3242 *
3243 * Gets attributes, size and filetimes for @name;
3244 *
3245 * Return value: %TRUE on success, %FALSE on failure
3246 */
3247 gboolean GetFileAttributesEx (const gunichar2 *name, WapiGetFileExInfoLevels level, gpointer info)
3248 {
3249 gchar *utf8_name;
3250 WapiFileAttributesData *data;
3251
3252 struct stat buf, linkbuf;
3253 time_t create_time;
3254 int result;
3255
3256 if (level != GetFileExInfoStandard) {
3257 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: info level %d not supported.", __func__,
3258 level);
3259
3260 SetLastError (ERROR_INVALID_PARAMETER);
3261 return FALSE;
3262 }
3263
3264 if (name == NULL) {
3265 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3266
3267 SetLastError (ERROR_INVALID_NAME);
3268 return(FALSE);
3269 }
3270
3271 utf8_name = mono_unicode_to_external (name);
3272 if (utf8_name == NULL) {
3273 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3274
3275 SetLastError (ERROR_INVALID_PARAMETER);
3276 return FALSE;
3277 }
3278
3279 result = _wapi_stat (utf8_name, &buf);
3280 if (result == -1 && errno == ENOENT) {
3281 /* Might be a dangling symlink... */
3282 result = _wapi_lstat (utf8_name, &buf);
3283 }
3284
3285 if (result != 0) {
3286 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3287 g_free (utf8_name);
3288 return FALSE;
3289 }
3290
3291 result = _wapi_lstat (utf8_name, &linkbuf);
3292 if (result != 0) {
3293 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3294 g_free (utf8_name);
3295 return(FALSE);
3296 }
3297
3298 /* fill data block */
3299
3300 data = (WapiFileAttributesData *)info;
3301
3302 if (buf.st_mtime < buf.st_ctime)
3303 create_time = buf.st_mtime;
3304 else
3305 create_time = buf.st_ctime;
3306
3307 data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_name,
3308 &buf,
3309 &linkbuf);
3310
3311 g_free (utf8_name);
3312
3313 time_t_to_filetime (create_time, &data->ftCreationTime);
3314 time_t_to_filetime (buf.st_atime, &data->ftLastAccessTime);
3315 time_t_to_filetime (buf.st_mtime, &data->ftLastWriteTime);
3316
3317 if (data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
3318 data->nFileSizeHigh = 0;
3319 data->nFileSizeLow = 0;
3320 }
3321 else {
3322 data->nFileSizeHigh = buf.st_size >> 32;
3323 data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3324 }
3325
3326 return TRUE;
3327 }
3328
3329 /**
3330 * SetFileAttributes
3331 * @name: name of file
3332 * @attrs: attributes to set
3333 *
3334 * Changes the attributes on a named file.
3335 *
3336 * Return value: %TRUE on success, %FALSE on failure.
3337 */
3338 extern gboolean SetFileAttributes (const gunichar2 *name, guint32 attrs)
3339 {
3340 /* FIXME: think of something clever to do on unix */
3341 gchar *utf8_name;
3342 struct stat buf;
3343 int result;
3344
3345 /*
3346 * Currently we only handle one *internal* case, with a value that is
3347 * not standard: 0x80000000, which means `set executable bit'
3348 */
3349
3350 if (name == NULL) {
3351 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3352
3353 SetLastError (ERROR_INVALID_NAME);
3354 return(FALSE);
3355 }
3356
3357 utf8_name = mono_unicode_to_external (name);
3358 if (utf8_name == NULL) {
3359 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3360
3361 SetLastError (ERROR_INVALID_NAME);
3362 return FALSE;
3363 }
3364
3365 result = _wapi_stat (utf8_name, &buf);
3366 if (result == -1 && errno == ENOENT) {
3367 /* Might be a dangling symlink... */
3368 result = _wapi_lstat (utf8_name, &buf);
3369 }
3370
3371 if (result != 0) {
3372 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3373 g_free (utf8_name);
3374 return FALSE;
3375 }
3376
3377 /* Contrary to the documentation, ms allows NORMAL to be
3378 * specified along with other attributes, so dont bother to
3379 * catch that case here.
3380 */
3381 if (attrs & FILE_ATTRIBUTE_READONLY) {
3382 result = _wapi_chmod (utf8_name, buf.st_mode & ~(S_IWUSR | S_IWOTH | S_IWGRP));
3383 } else {
3384 result = _wapi_chmod (utf8_name, buf.st_mode | S_IWUSR);
3385 }
3386
3387 /* Ignore the other attributes for now */
3388
3389 if (attrs & 0x80000000){
3390 mode_t exec_mask = 0;
3391
3392 if ((buf.st_mode & S_IRUSR) != 0)
3393 exec_mask |= S_IXUSR;
3394
3395 if ((buf.st_mode & S_IRGRP) != 0)
3396 exec_mask |= S_IXGRP;
3397
3398 if ((buf.st_mode & S_IROTH) != 0)
3399 exec_mask |= S_IXOTH;
3400
3401 result = chmod (utf8_name, buf.st_mode | exec_mask);
3402 }
3403 /* Don't bother to reset executable (might need to change this
3404 * policy)
3405 */
3406
3407 g_free (utf8_name);
3408
3409 return(TRUE);
3410 }
3411
3412 /**
3413 * GetCurrentDirectory
3414 * @length: size of the buffer
3415 * @buffer: pointer to buffer that recieves path
3416 *
3417 * Retrieves the current directory for the current process.
3418 *
3419 * Return value: number of characters in buffer on success, zero on failure
3420 */
3421 extern guint32 GetCurrentDirectory (guint32 length, gunichar2 *buffer)
3422 {
3423 gunichar2 *utf16_path;
3424 glong count;
3425 gsize bytes;
3426
3427 #ifdef __native_client__
3428 gchar *path = g_get_current_dir ();
3429 if (length < strlen(path) + 1 || path == NULL)
3430 return 0;
3431 memcpy (buffer, path, strlen(path) + 1);
3432 #else
3433 if (getcwd ((char*)buffer, length) == NULL) {
3434 if (errno == ERANGE) { /*buffer length is not big enough */
3435 gchar *path = g_get_current_dir (); /*FIXME g_get_current_dir doesn't work with broken paths and calling it just to know the path length is silly*/
3436 if (path == NULL)
3437 return 0;
3438 utf16_path = mono_unicode_from_external (path, &bytes);
3439 g_free (utf16_path);
3440 g_free (path);
3441 return (bytes/2)+1;
3442 }
3443 _wapi_set_last_error_from_errno ();
3444 return 0;
3445 }
3446 #endif
3447
3448 utf16_path = mono_unicode_from_external ((gchar*)buffer, &bytes);
3449 count = (bytes/2)+1;
3450 g_assert (count <= length); /*getcwd must have failed before with ERANGE*/
3451
3452 /* Add the terminator */
3453 memset (buffer, '\0', bytes+2);
3454 memcpy (buffer, utf16_path, bytes);
3455
3456 g_free (utf16_path);
3457
3458 return count;
3459 }
3460
3461 /**
3462 * SetCurrentDirectory
3463 * @path: path to new directory
3464 *
3465 * Changes the directory path for the current process.
3466 *
3467 * Return value: %TRUE on success, %FALSE on failure.
3468 */
3469 extern gboolean SetCurrentDirectory (const gunichar2 *path)
3470 {
3471 gchar *utf8_path;
3472 gboolean result;
3473
3474 if (path == NULL) {
3475 SetLastError (ERROR_INVALID_PARAMETER);
3476 return(FALSE);
3477 }
3478
3479 utf8_path = mono_unicode_to_external (path);
3480 if (_wapi_chdir (utf8_path) != 0) {
3481 _wapi_set_last_error_from_errno ();
3482 result = FALSE;
3483 }
3484 else
3485 result = TRUE;
3486
3487 g_free (utf8_path);
3488 return result;
3489 }
3490
3491 gboolean CreatePipe (gpointer *readpipe, gpointer *writepipe,
3492 WapiSecurityAttributes *security G_GNUC_UNUSED, guint32 size)
3493 {
3494 struct _WapiHandle_file pipe_read_handle = {0};
3495 struct _WapiHandle_file pipe_write_handle = {0};
3496 gpointer read_handle;
3497 gpointer write_handle;
3498 int filedes[2];
3499 int ret;
3500
3501 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Creating pipe", __func__);
3502
3503 ret=pipe (filedes);
3504 if(ret==-1) {
3505 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error creating pipe: %s", __func__,
3506 strerror (errno));
3507
3508 _wapi_set_last_error_from_errno ();
3509 return(FALSE);
3510 }
3511
3512 if (filedes[0] >= mono_w32handle_fd_reserve ||
3513 filedes[1] >= mono_w32handle_fd_reserve) {
3514 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
3515
3516 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
3517
3518 close (filedes[0]);
3519 close (filedes[1]);
3520
3521 return(FALSE);
3522 }
3523
3524 /* filedes[0] is open for reading, filedes[1] for writing */
3525
3526 pipe_read_handle.fd = filedes [0];
3527 pipe_read_handle.fileaccess = GENERIC_READ;
3528 read_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[0],
3529 &pipe_read_handle);
3530 if (read_handle == INVALID_HANDLE_VALUE) {
3531 g_warning ("%s: error creating pipe read handle", __func__);
3532 close (filedes[0]);
3533 close (filedes[1]);
3534 SetLastError (ERROR_GEN_FAILURE);
3535
3536 return(FALSE);
3537 }
3538
3539 pipe_write_handle.fd = filedes [1];
3540 pipe_write_handle.fileaccess = GENERIC_WRITE;
3541 write_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[1],
3542 &pipe_write_handle);
3543 if (write_handle == INVALID_HANDLE_VALUE) {
3544 g_warning ("%s: error creating pipe write handle", __func__);
3545 mono_w32handle_unref (read_handle);
3546
3547 close (filedes[0]);
3548 close (filedes[1]);
3549 SetLastError (ERROR_GEN_FAILURE);
3550
3551 return(FALSE);
3552 }
3553
3554 *readpipe = read_handle;
3555 *writepipe = write_handle;
3556
3557 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning pipe: read handle %p, write handle %p",
3558 __func__, read_handle, write_handle);
3559
3560 return(TRUE);
3561 }
3562
3563 #ifdef HAVE_GETFSSTAT
3564 /* Darwin has getfsstat */
3565 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3566 {
3567 struct statfs *stats;
3568 int size, n, i;
3569 gunichar2 *dir;
3570 glong length, total = 0;
3571
3572 n = getfsstat (NULL, 0, MNT_NOWAIT);
3573 if (n == -1)
3574 return 0;
3575 size = n * sizeof (struct statfs);
3576 stats = (struct statfs *) g_malloc (size);
3577 if (stats == NULL)
3578 return 0;
3579 if (getfsstat (stats, size, MNT_NOWAIT) == -1){
3580 g_free (stats);
3581 return 0;
3582 }
3583 for (i = 0; i < n; i++){
3584 dir = g_utf8_to_utf16 (stats [i].f_mntonname, -1, NULL, &length, NULL);
3585 if (total + length < len){
3586 memcpy (buf + total, dir, sizeof (gunichar2) * length);
3587 buf [total+length] = 0;
3588 }
3589 g_free (dir);
3590 total += length + 1;
3591 }
3592 if (total < len)
3593 buf [total] = 0;
3594 total++;
3595 g_free (stats);
3596 return total;
3597 }
3598 #else
3599 /* In-place octal sequence replacement */
3600 static void
3601 unescape_octal (gchar *str)
3602 {
3603 gchar *rptr;
3604 gchar *wptr;
3605
3606 if (str == NULL)
3607 return;
3608
3609 rptr = wptr = str;
3610 while (*rptr != '\0') {
3611 if (*rptr == '\\') {
3612 char c;
3613 rptr++;
3614 c = (*(rptr++) - '0') << 6;
3615 c += (*(rptr++) - '0') << 3;
3616 c += *(rptr++) - '0';
3617 *wptr++ = c;
3618 } else if (wptr != rptr) {
3619 *wptr++ = *rptr++;
3620 } else {
3621 rptr++; wptr++;
3622 }
3623 }
3624 *wptr = '\0';
3625 }
3626 static gint32 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf);
3627
3628 #if __linux__
3629 #define GET_LOGICAL_DRIVE_STRINGS_BUFFER 512
3630 #define GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER 512
3631 #define GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER 64
3632
3633 typedef struct
3634 {
3635 glong total;
3636 guint32 buffer_index;
3637 guint32 mountpoint_index;
3638 guint32 field_number;
3639 guint32 allocated_size;
3640 guint32 fsname_index;
3641 guint32 fstype_index;
3642 gchar mountpoint [GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER + 1];
3643 gchar *mountpoint_allocated;
3644 gchar buffer [GET_LOGICAL_DRIVE_STRINGS_BUFFER];
3645 gchar fsname [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3646 gchar fstype [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3647 ssize_t nbytes;
3648 gchar delimiter;
3649 gboolean check_mount_source;
3650 } LinuxMountInfoParseState;
3651
3652 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3653 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3654 static void append_to_mountpoint (LinuxMountInfoParseState *state);
3655 static gboolean add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3656
3657 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3658 {
3659 int fd;
3660 gint32 ret = 0;
3661 LinuxMountInfoParseState state;
3662 gboolean (*parser)(guint32, gunichar2*, LinuxMountInfoParseState*) = NULL;
3663
3664 memset (buf, 0, len * sizeof (gunichar2));
3665 fd = open ("/proc/self/mountinfo", O_RDONLY);
3666 if (fd != -1)
3667 parser = GetLogicalDriveStrings_MountInfo;
3668 else {
3669 fd = open ("/proc/mounts", O_RDONLY);
3670 if (fd != -1)
3671 parser = GetLogicalDriveStrings_Mounts;
3672 }
3673
3674 if (!parser) {
3675 ret = GetLogicalDriveStrings_Mtab (len, buf);
3676 goto done_and_out;
3677 }
3678
3679 memset (&state, 0, sizeof (LinuxMountInfoParseState));
3680 state.field_number = 1;
3681 state.delimiter = ' ';
3682
3683 while ((state.nbytes = read (fd, state.buffer, GET_LOGICAL_DRIVE_STRINGS_BUFFER)) > 0) {
3684 state.buffer_index = 0;
3685
3686 while ((*parser)(len, buf, &state)) {
3687 if (state.buffer [state.buffer_index] == '\n') {
3688 gboolean quit = add_drive_string (len, buf, &state);
3689 state.field_number = 1;
3690 state.buffer_index++;
3691 if (state.mountpoint_allocated) {
3692 g_free (state.mountpoint_allocated);
3693 state.mountpoint_allocated = NULL;
3694 }
3695 if (quit) {
3696 ret = state.total;
3697 goto done_and_out;
3698 }
3699 }
3700 }
3701 };
3702 ret = state.total;
3703
3704 done_and_out:
3705 if (fd != -1)
3706 close (fd);
3707 return ret;
3708 }
3709
3710 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3711 {
3712 gchar *ptr;
3713
3714 if (state->field_number == 1)
3715 state->check_mount_source = TRUE;
3716
3717 while (state->buffer_index < (guint32)state->nbytes) {
3718 if (state->buffer [state->buffer_index] == state->delimiter) {
3719 state->field_number++;
3720 switch (state->field_number) {
3721 case 2:
3722 state->mountpoint_index = 0;
3723 break;
3724
3725 case 3:
3726 if (state->mountpoint_allocated)
3727 state->mountpoint_allocated [state->mountpoint_index] = 0;
3728 else
3729 state->mountpoint [state->mountpoint_index] = 0;
3730 break;
3731
3732 default:
3733 ptr = (gchar*)memchr (state->buffer + state->buffer_index, '\n', GET_LOGICAL_DRIVE_STRINGS_BUFFER - state->buffer_index);
3734 if (ptr)
3735 state->buffer_index = (ptr - (gchar*)state->buffer) - 1;
3736 else
3737 state->buffer_index = state->nbytes;
3738 return TRUE;
3739 }
3740 state->buffer_index++;
3741 continue;
3742 } else if (state->buffer [state->buffer_index] == '\n')
3743 return TRUE;
3744
3745 switch (state->field_number) {
3746 case 1:
3747 if (state->check_mount_source) {
3748 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3749 /* We can ignore the rest, it's a device
3750 * path */
3751 state->check_mount_source = FALSE;
3752 state->fsname [state->fsname_index++] = '/';
3753 break;
3754 }
3755 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3756 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3757 }
3758 break;
3759
3760 case 2:
3761 append_to_mountpoint (state);
3762 break;
3763
3764 case 3:
3765 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3766 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3767 break;
3768 }
3769
3770 state->buffer_index++;
3771 }
3772
3773 return FALSE;
3774 }
3775
3776 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3777 {
3778 while (state->buffer_index < (guint32)state->nbytes) {
3779 if (state->buffer [state->buffer_index] == state->delimiter) {
3780 state->field_number++;
3781 switch (state->field_number) {
3782 case 5:
3783 state->mountpoint_index = 0;
3784 break;
3785
3786 case 6:
3787 if (state->mountpoint_allocated)
3788 state->mountpoint_allocated [state->mountpoint_index] = 0;
3789 else
3790 state->mountpoint [state->mountpoint_index] = 0;
3791 break;
3792
3793 case 7:
3794 state->delimiter = '-';
3795 break;
3796
3797 case 8:
3798 state->delimiter = ' ';
3799 break;
3800
3801 case 10:
3802 state->check_mount_source = TRUE;
3803 break;
3804 }
3805 state->buffer_index++;
3806 continue;
3807 } else if (state->buffer [state->buffer_index] == '\n')
3808 return TRUE;
3809
3810 switch (state->field_number) {
3811 case 5:
3812 append_to_mountpoint (state);
3813 break;
3814
3815 case 9:
3816 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3817 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3818 break;
3819
3820 case 10:
3821 if (state->check_mount_source) {
3822 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3823 /* We can ignore the rest, it's a device
3824 * path */
3825 state->check_mount_source = FALSE;
3826 state->fsname [state->fsname_index++] = '/';
3827 break;
3828 }
3829 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3830 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3831 }
3832 break;
3833 }
3834
3835 state->buffer_index++;
3836 }
3837
3838 return FALSE;
3839 }
3840
3841 static void
3842 append_to_mountpoint (LinuxMountInfoParseState *state)
3843 {
3844 gchar ch = state->buffer [state->buffer_index];
3845 if (state->mountpoint_allocated) {
3846 if (state->mountpoint_index >= state->allocated_size) {
3847 guint32 newsize = (state->allocated_size << 1) + 1;
3848 gchar *newbuf = (gchar *)g_malloc0 (newsize * sizeof (gchar));
3849
3850 memcpy (newbuf, state->mountpoint_allocated, state->mountpoint_index);
3851 g_free (state->mountpoint_allocated);
3852 state->mountpoint_allocated = newbuf;
3853 state->allocated_size = newsize;
3854 }
3855 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3856 } else {
3857 if (state->mountpoint_index >= GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER) {
3858 state->allocated_size = (state->mountpoint_index << 1) + 1;
3859 state->mountpoint_allocated = (gchar *)g_malloc0 (state->allocated_size * sizeof (gchar));
3860 memcpy (state->mountpoint_allocated, state->mountpoint, state->mountpoint_index);
3861 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3862 } else
3863 state->mountpoint [state->mountpoint_index++] = ch;
3864 }
3865 }
3866
3867 static gboolean
3868 add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3869 {
3870 gboolean quit = FALSE;
3871 gboolean ignore_entry;
3872
3873 if (state->fsname_index == 1 && state->fsname [0] == '/')
3874 ignore_entry = FALSE;
3875 else if (memcmp ("overlay", state->fsname, state->fsname_index) == 0 ||
3876 memcmp ("aufs", state->fstype, state->fstype_index) == 0) {
3877 /* Don't ignore overlayfs and aufs - these might be used on Docker
3878 * (https://bugzilla.xamarin.com/show_bug.cgi?id=31021) */
3879 ignore_entry = FALSE;
3880 } else if (state->fsname_index == 0 || memcmp ("none", state->fsname, state->fsname_index) == 0) {
3881 ignore_entry = TRUE;
3882 } else if (state->fstype_index >= 5 && memcmp ("fuse.", state->fstype, 5) == 0) {
3883 /* Ignore GNOME's gvfs */
3884 if (state->fstype_index == 21 && memcmp ("fuse.gvfs-fuse-daemon", state->fstype, state->fstype_index) == 0)
3885 ignore_entry = TRUE;
3886 else
3887 ignore_entry = FALSE;
3888 } else if (state->fstype_index == 3 && memcmp ("nfs", state->fstype, state->fstype_index) == 0)
3889 ignore_entry = FALSE;
3890 else
3891 ignore_entry = TRUE;
3892
3893 if (!ignore_entry) {
3894 gunichar2 *dir;
3895 glong length;
3896 gchar *mountpoint = state->mountpoint_allocated ? state->mountpoint_allocated : state->mountpoint;
3897
3898 unescape_octal (mountpoint);
3899 dir = g_utf8_to_utf16 (mountpoint, -1, NULL, &length, NULL);
3900 if (state->total + length + 1 > len) {
3901 quit = TRUE;
3902 state->total = len * 2;
3903 } else {
3904 length++;
3905 memcpy (buf + state->total, dir, sizeof (gunichar2) * length);
3906 state->total += length;
3907 }
3908 g_free (dir);
3909 }
3910 state->fsname_index = 0;
3911 state->fstype_index = 0;
3912
3913 return quit;
3914 }
3915 #else
3916 gint32
3917 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3918 {
3919 return GetLogicalDriveStrings_Mtab (len, buf);
3920 }
3921 #endif
3922 static gint32
3923 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf)
3924 {
3925 FILE *fp;
3926 gunichar2 *ptr, *dir;
3927 glong length, total = 0;
3928 gchar buffer [512];
3929 gchar **splitted;
3930
3931 memset (buf, 0, sizeof (gunichar2) * (len + 1));
3932 buf [0] = '/';
3933 buf [1] = 0;
3934 buf [2] = 0;
3935
3936 /* Sigh, mntent and friends don't work well.
3937 * It stops on the first line that doesn't begin with a '/'.
3938 * (linux 2.6.5, libc 2.3.2.ds1-12) - Gonz */
3939 fp = fopen ("/etc/mtab", "rt");
3940 if (fp == NULL) {
3941 fp = fopen ("/etc/mnttab", "rt");
3942 if (fp == NULL)
3943 return 1;
3944 }
3945
3946 ptr = buf;
3947 while (fgets (buffer, 512, fp) != NULL) {
3948 if (*buffer != '/')
3949 continue;
3950
3951 splitted = g_strsplit (buffer, " ", 0);
3952 if (!*splitted || !*(splitted + 1)) {
3953 g_strfreev (splitted);
3954 continue;
3955 }
3956
3957 unescape_octal (*(splitted + 1));
3958 dir = g_utf8_to_utf16 (*(splitted + 1), -1, NULL, &length, NULL);
3959 g_strfreev (splitted);
3960 if (total + length + 1 > len) {
3961 fclose (fp);
3962 g_free (dir);
3963 return len * 2; /* guess */
3964 }
3965
3966 memcpy (ptr + total, dir, sizeof (gunichar2) * length);
3967 g_free (dir);
3968 total += length + 1;
3969 }
3970
3971 fclose (fp);
3972 return total;
3973 /* Commented out, does not work with my mtab!!! - Gonz */
3974 #ifdef NOTENABLED /* HAVE_MNTENT_H */
3975 {
3976 FILE *fp;
3977 struct mntent *mnt;
3978 gunichar2 *ptr, *dir;
3979 glong len, total = 0;
3980
3981
3982 fp = setmntent ("/etc/mtab", "rt");
3983 if (fp == NULL) {
3984 fp = setmntent ("/etc/mnttab", "rt");
3985 if (fp == NULL)
3986 return;
3987 }
3988
3989 ptr = buf;
3990 while ((mnt = getmntent (fp)) != NULL) {
3991 g_print ("GOT %s\n", mnt->mnt_dir);
3992 dir = g_utf8_to_utf16 (mnt->mnt_dir, &len, NULL, NULL, NULL);
3993 if (total + len + 1 > len) {
3994 return len * 2; /* guess */
3995 }
3996
3997 memcpy (ptr + total, dir, sizeof (gunichar2) * len);
3998 g_free (dir);
3999 total += len + 1;
4000 }
4001
4002 endmntent (fp);
4003 return total;
4004 }
4005 #endif
4006 }
4007 #endif
4008
4009 #if defined(HAVE_STATVFS) || defined(HAVE_STATFS)
4010 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, ULARGE_INTEGER *free_bytes_avail,
4011 ULARGE_INTEGER *total_number_of_bytes,
4012 ULARGE_INTEGER *total_number_of_free_bytes)
4013 {
4014 #ifdef HAVE_STATVFS
4015 struct statvfs fsstat;
4016 #elif defined(HAVE_STATFS)
4017 struct statfs fsstat;
4018 #endif
4019 gboolean isreadonly;
4020 gchar *utf8_path_name;
4021 int ret;
4022 unsigned long block_size;
4023
4024 if (path_name == NULL) {
4025 utf8_path_name = g_strdup (g_get_current_dir());
4026 if (utf8_path_name == NULL) {
4027 SetLastError (ERROR_DIRECTORY);
4028 return(FALSE);
4029 }
4030 }
4031 else {
4032 utf8_path_name = mono_unicode_to_external (path_name);
4033 if (utf8_path_name == NULL) {
4034 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4035
4036 SetLastError (ERROR_INVALID_NAME);
4037 return(FALSE);
4038 }
4039 }
4040
4041 do {
4042 #ifdef HAVE_STATVFS
4043 ret = statvfs (utf8_path_name, &fsstat);
4044 isreadonly = ((fsstat.f_flag & ST_RDONLY) == ST_RDONLY);
4045 block_size = fsstat.f_frsize;
4046 #elif defined(HAVE_STATFS)
4047 ret = statfs (utf8_path_name, &fsstat);
4048 #if defined (MNT_RDONLY)
4049 isreadonly = ((fsstat.f_flags & MNT_RDONLY) == MNT_RDONLY);
4050 #elif defined (MS_RDONLY)
4051 isreadonly = ((fsstat.f_flags & MS_RDONLY) == MS_RDONLY);
4052 #endif
4053 block_size = fsstat.f_bsize;
4054 #endif
4055 } while(ret == -1 && errno == EINTR);
4056
4057 g_free(utf8_path_name);
4058
4059 if (ret == -1) {
4060 _wapi_set_last_error_from_errno ();
4061 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: statvfs failed: %s", __func__, strerror (errno));
4062 return(FALSE);
4063 }
4064
4065 /* total number of free bytes for non-root */
4066 if (free_bytes_avail != NULL) {
4067 if (isreadonly) {
4068 free_bytes_avail->QuadPart = 0;
4069 }
4070 else {
4071 free_bytes_avail->QuadPart = block_size * (guint64)fsstat.f_bavail;
4072 }
4073 }
4074
4075 /* total number of bytes available for non-root */
4076 if (total_number_of_bytes != NULL) {
4077 total_number_of_bytes->QuadPart = block_size * (guint64)fsstat.f_blocks;
4078 }
4079
4080 /* total number of bytes available for root */
4081 if (total_number_of_free_bytes != NULL) {
4082 if (isreadonly) {
4083 total_number_of_free_bytes->QuadPart = 0;
4084 }
4085 else {
4086 total_number_of_free_bytes->QuadPart = block_size * (guint64)fsstat.f_bfree;
4087 }
4088 }
4089
4090 return(TRUE);
4091 }
4092 #else
4093 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, ULARGE_INTEGER *free_bytes_avail,
4094 ULARGE_INTEGER *total_number_of_bytes,
4095 ULARGE_INTEGER *total_number_of_free_bytes)
4096 {
4097 if (free_bytes_avail != NULL) {
4098 free_bytes_avail->QuadPart = (guint64) -1;
4099 }
4100
4101 if (total_number_of_bytes != NULL) {
4102 total_number_of_bytes->QuadPart = (guint64) -1;
4103 }
4104
4105 if (total_number_of_free_bytes != NULL) {
4106 total_number_of_free_bytes->QuadPart = (guint64) -1;
4107 }
4108
4109 return(TRUE);
4110 }
4111 #endif
4112
4113 /*
4114 * General Unix support
4115 */
4116 typedef struct {
4117 guint32 drive_type;
4118 #if __linux__
4119 const long fstypeid;
4120 #endif
4121 const gchar* fstype;
4122 } _wapi_drive_type;
4123
4124 static _wapi_drive_type _wapi_drive_types[] = {
4125 #if PLATFORM_MACOSX
4126 { DRIVE_REMOTE, "afp" },
4127 { DRIVE_REMOTE, "autofs" },
4128 { DRIVE_CDROM, "cddafs" },
4129 { DRIVE_CDROM, "cd9660" },
4130 { DRIVE_RAMDISK, "devfs" },
4131 { DRIVE_FIXED, "exfat" },
4132 { DRIVE_RAMDISK, "fdesc" },
4133 { DRIVE_REMOTE, "ftp" },
4134 { DRIVE_FIXED, "hfs" },
4135 { DRIVE_FIXED, "msdos" },
4136 { DRIVE_REMOTE, "nfs" },
4137 { DRIVE_FIXED, "ntfs" },
4138 { DRIVE_REMOTE, "smbfs" },
4139 { DRIVE_FIXED, "udf" },
4140 { DRIVE_REMOTE, "webdav" },
4141 { DRIVE_UNKNOWN, NULL }
4142 #elif __linux__
4143 { DRIVE_FIXED, ADFS_SUPER_MAGIC, "adfs"},
4144 { DRIVE_FIXED, AFFS_SUPER_MAGIC, "affs"},
4145 { DRIVE_REMOTE, AFS_SUPER_MAGIC, "afs"},
4146 { DRIVE_RAMDISK, AUTOFS_SUPER_MAGIC, "autofs"},
4147 { DRIVE_RAMDISK, AUTOFS_SBI_MAGIC, "autofs4"},
4148 { DRIVE_REMOTE, CODA_SUPER_MAGIC, "coda" },
4149 { DRIVE_RAMDISK, CRAMFS_MAGIC, "cramfs"},
4150 { DRIVE_RAMDISK, CRAMFS_MAGIC_WEND, "cramfs"},
4151 { DRIVE_REMOTE, CIFS_MAGIC_NUMBER, "cifs"},
4152 { DRIVE_RAMDISK, DEBUGFS_MAGIC, "debugfs"},
4153 { DRIVE_RAMDISK, SYSFS_MAGIC, "sysfs"},
4154 { DRIVE_RAMDISK, SECURITYFS_MAGIC, "securityfs"},
4155 { DRIVE_RAMDISK, SELINUX_MAGIC, "selinuxfs"},
4156 { DRIVE_RAMDISK, RAMFS_MAGIC, "ramfs"},
4157 { DRIVE_FIXED, SQUASHFS_MAGIC, "squashfs"},
4158 { DRIVE_FIXED, EFS_SUPER_MAGIC, "efs"},
4159 { DRIVE_FIXED, EXT2_SUPER_MAGIC, "ext"},
4160 { DRIVE_FIXED, EXT3_SUPER_MAGIC, "ext"},
4161 { DRIVE_FIXED, EXT4_SUPER_MAGIC, "ext"},
4162 { DRIVE_REMOTE, XENFS_SUPER_MAGIC, "xenfs"},
4163 { DRIVE_FIXED, BTRFS_SUPER_MAGIC, "btrfs"},
4164 { DRIVE_FIXED, HFS_SUPER_MAGIC, "hfs"},
4165 { DRIVE_FIXED, HFSPLUS_SUPER_MAGIC, "hfsplus"},
4166 { DRIVE_FIXED, HPFS_SUPER_MAGIC, "hpfs"},
4167 { DRIVE_RAMDISK, HUGETLBFS_MAGIC, "hugetlbfs"},
4168 { DRIVE_CDROM, ISOFS_SUPER_MAGIC, "iso"},
4169 { DRIVE_FIXED, JFFS2_SUPER_MAGIC, "jffs2"},
4170 { DRIVE_RAMDISK, ANON_INODE_FS_MAGIC, "anon_inode"},
4171 { DRIVE_FIXED, JFS_SUPER_MAGIC, "jfs"},
4172 { DRIVE_FIXED, MINIX_SUPER_MAGIC, "minix"},
4173 { DRIVE_FIXED, MINIX_SUPER_MAGIC2, "minix v2"},
4174 { DRIVE_FIXED, MINIX2_SUPER_MAGIC, "minix2"},
4175 { DRIVE_FIXED, MINIX2_SUPER_MAGIC2, "minix2 v2"},
4176 { DRIVE_FIXED, MINIX3_SUPER_MAGIC, "minix3"},
4177 { DRIVE_FIXED, MSDOS_SUPER_MAGIC, "msdos"},
4178 { DRIVE_REMOTE, NCP_SUPER_MAGIC, "ncp"},
4179 { DRIVE_REMOTE, NFS_SUPER_MAGIC, "nfs"},
4180 { DRIVE_FIXED, NTFS_SB_MAGIC, "ntfs"},
4181 { DRIVE_RAMDISK, OPENPROM_SUPER_MAGIC, "openpromfs"},
4182 { DRIVE_RAMDISK, PROC_SUPER_MAGIC, "proc"},
4183 { DRIVE_FIXED, QNX4_SUPER_MAGIC, "qnx4"},
4184 { DRIVE_FIXED, REISERFS_SUPER_MAGIC, "reiserfs"},
4185 { DRIVE_RAMDISK, ROMFS_MAGIC, "romfs"},
4186 { DRIVE_REMOTE, SMB_SUPER_MAGIC, "samba"},
4187 { DRIVE_RAMDISK, CGROUP_SUPER_MAGIC, "cgroupfs"},
4188 { DRIVE_RAMDISK, FUTEXFS_SUPER_MAGIC, "futexfs"},
4189 { DRIVE_FIXED, SYSV2_SUPER_MAGIC, "sysv2"},
4190 { DRIVE_FIXED, SYSV4_SUPER_MAGIC, "sysv4"},
4191 { DRIVE_RAMDISK, TMPFS_MAGIC, "tmpfs"},
4192 { DRIVE_RAMDISK, DEVPTS_SUPER_MAGIC, "devpts"},
4193 { DRIVE_CDROM, UDF_SUPER_MAGIC, "udf"},
4194 { DRIVE_FIXED, UFS_MAGIC, "ufs"},
4195 { DRIVE_FIXED, UFS_MAGIC_BW, "ufs"},
4196 { DRIVE_FIXED, UFS2_MAGIC, "ufs2"},
4197 { DRIVE_FIXED, UFS_CIGAM, "ufs"},
4198 { DRIVE_RAMDISK, USBDEVICE_SUPER_MAGIC, "usbdev"},
4199 { DRIVE_FIXED, XENIX_SUPER_MAGIC, "xenix"},
4200 { DRIVE_FIXED, XFS_SB_MAGIC, "xfs"},
4201 { DRIVE_RAMDISK, FUSE_SUPER_MAGIC, "fuse"},
4202 { DRIVE_FIXED, V9FS_MAGIC, "9p"},
4203 { DRIVE_REMOTE, CEPH_SUPER_MAGIC, "ceph"},
4204 { DRIVE_RAMDISK, CONFIGFS_MAGIC, "configfs"},
4205 { DRIVE_RAMDISK, ECRYPTFS_SUPER_MAGIC, "eCryptfs"},
4206 { DRIVE_FIXED, EXOFS_SUPER_MAGIC, "exofs"},
4207 { DRIVE_FIXED, VXFS_SUPER_MAGIC, "vxfs"},
4208 { DRIVE_FIXED, VXFS_OLT_MAGIC, "vxfs_olt"},
4209 { DRIVE_REMOTE, GFS2_MAGIC, "gfs2"},
4210 { DRIVE_FIXED, LOGFS_MAGIC_U32, "logfs"},
4211 { DRIVE_FIXED, OCFS2_SUPER_MAGIC, "ocfs2"},
4212 { DRIVE_FIXED, OMFS_MAGIC, "omfs"},
4213 { DRIVE_FIXED, UBIFS_SUPER_MAGIC, "ubifs"},
4214 { DRIVE_UNKNOWN, 0, NULL}
4215 #else
4216 { DRIVE_RAMDISK, "ramfs" },
4217 { DRIVE_RAMDISK, "tmpfs" },
4218 { DRIVE_RAMDISK, "proc" },
4219 { DRIVE_RAMDISK, "sysfs" },
4220 { DRIVE_RAMDISK, "debugfs" },
4221 { DRIVE_RAMDISK, "devpts" },
4222 { DRIVE_RAMDISK, "securityfs" },
4223 { DRIVE_CDROM, "iso9660" },
4224 { DRIVE_FIXED, "ext2" },
4225 { DRIVE_FIXED, "ext3" },
4226 { DRIVE_FIXED, "ext4" },
4227 { DRIVE_FIXED, "sysv" },
4228 { DRIVE_FIXED, "reiserfs" },
4229 { DRIVE_FIXED, "ufs" },
4230 { DRIVE_FIXED, "vfat" },
4231 { DRIVE_FIXED, "msdos" },
4232 { DRIVE_FIXED, "udf" },
4233 { DRIVE_FIXED, "hfs" },
4234 { DRIVE_FIXED, "hpfs" },
4235 { DRIVE_FIXED, "qnx4" },
4236 { DRIVE_FIXED, "ntfs" },
4237 { DRIVE_FIXED, "ntfs-3g" },
4238 { DRIVE_REMOTE, "smbfs" },
4239 { DRIVE_REMOTE, "fuse" },
4240 { DRIVE_REMOTE, "nfs" },
4241 { DRIVE_REMOTE, "nfs4" },
4242 { DRIVE_REMOTE, "cifs" },
4243 { DRIVE_REMOTE, "ncpfs" },
4244 { DRIVE_REMOTE, "coda" },
4245 { DRIVE_REMOTE, "afs" },
4246 { DRIVE_UNKNOWN, NULL }
4247 #endif
4248 };
4249
4250 #if __linux__
4251 static guint32 _wapi_get_drive_type(long f_type)
4252 {
4253 _wapi_drive_type *current;
4254
4255 current = &_wapi_drive_types[0];
4256 while (current->drive_type != DRIVE_UNKNOWN) {
4257 if (current->fstypeid == f_type)
4258 return current->drive_type;
4259 current++;
4260 }
4261
4262 return DRIVE_UNKNOWN;
4263 }
4264 #else
4265 static guint32 _wapi_get_drive_type(const gchar* fstype)
4266 {
4267 _wapi_drive_type *current;
4268
4269 current = &_wapi_drive_types[0];
4270 while (current->drive_type != DRIVE_UNKNOWN) {
4271 if (strcmp (current->fstype, fstype) == 0)
4272 break;
4273
4274 current++;
4275 }
4276
4277 return current->drive_type;
4278 }
4279 #endif
4280
4281 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4282 static guint32
4283 GetDriveTypeFromPath (const char *utf8_root_path_name)
4284 {
4285 struct statfs buf;
4286
4287 if (statfs (utf8_root_path_name, &buf) == -1)
4288 return DRIVE_UNKNOWN;
4289 #if PLATFORM_MACOSX
4290 return _wapi_get_drive_type (buf.f_fstypename);
4291 #else
4292 return _wapi_get_drive_type (buf.f_type);
4293 #endif
4294 }
4295 #else
4296 static guint32
4297 GetDriveTypeFromPath (const gchar *utf8_root_path_name)
4298 {
4299 guint32 drive_type;
4300 FILE *fp;
4301 gchar buffer [512];
4302 gchar **splitted;
4303
4304 fp = fopen ("/etc/mtab", "rt");
4305 if (fp == NULL) {
4306 fp = fopen ("/etc/mnttab", "rt");
4307 if (fp == NULL)
4308 return(DRIVE_UNKNOWN);
4309 }
4310
4311 drive_type = DRIVE_NO_ROOT_DIR;
4312 while (fgets (buffer, 512, fp) != NULL) {
4313 splitted = g_strsplit (buffer, " ", 0);
4314 if (!*splitted || !*(splitted + 1) || !*(splitted + 2)) {
4315 g_strfreev (splitted);
4316 continue;
4317 }
4318
4319 /* compare given root_path_name with the one from mtab,
4320 if length of utf8_root_path_name is zero it must be the root dir */
4321 if (strcmp (*(splitted + 1), utf8_root_path_name) == 0 ||
4322 (strcmp (*(splitted + 1), "/") == 0 && strlen (utf8_root_path_name) == 0)) {
4323 drive_type = _wapi_get_drive_type (*(splitted + 2));
4324 /* it is possible this path might be mounted again with
4325 a known type...keep looking */
4326 if (drive_type != DRIVE_UNKNOWN) {
4327 g_strfreev (splitted);
4328 break;
4329 }
4330 }
4331
4332 g_strfreev (splitted);
4333 }
4334
4335 fclose (fp);
4336 return drive_type;
4337 }
4338 #endif
4339
4340 guint32 GetDriveType(const gunichar2 *root_path_name)
4341 {
4342 gchar *utf8_root_path_name;
4343 guint32 drive_type;
4344
4345 if (root_path_name == NULL) {
4346 utf8_root_path_name = g_strdup (g_get_current_dir());
4347 if (utf8_root_path_name == NULL) {
4348 return(DRIVE_NO_ROOT_DIR);
4349 }
4350 }
4351 else {
4352 utf8_root_path_name = mono_unicode_to_external (root_path_name);
4353 if (utf8_root_path_name == NULL) {
4354 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4355 return(DRIVE_NO_ROOT_DIR);
4356 }
4357
4358 /* strip trailing slash for compare below */
4359 if (g_str_has_suffix(utf8_root_path_name, "/") && utf8_root_path_name [1] != 0) {
4360 utf8_root_path_name[strlen(utf8_root_path_name) - 1] = 0;
4361 }
4362 }
4363 drive_type = GetDriveTypeFromPath (utf8_root_path_name);
4364 g_free (utf8_root_path_name);
4365
4366 return (drive_type);
4367 }
4368
4369 #if defined (PLATFORM_MACOSX) || defined (__linux__) || defined(PLATFORM_BSD) || defined(__native_client__) || defined(__FreeBSD_kernel__)
4370 static gchar*
4371 get_fstypename (gchar *utfpath)
4372 {
4373 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4374 struct statfs stat;
4375 #if __linux__
4376 _wapi_drive_type *current;
4377 #endif
4378 if (statfs (utfpath, &stat) == -1)
4379 return NULL;
4380 #if PLATFORM_MACOSX
4381 return g_strdup (stat.f_fstypename);
4382 #else
4383 current = &_wapi_drive_types[0];
4384 while (current->drive_type != DRIVE_UNKNOWN) {
4385 if (stat.f_type == current->fstypeid)
4386 return g_strdup (current->fstype);
4387 current++;
4388 }
4389 return NULL;
4390 #endif
4391 #else
4392 return NULL;
4393 #endif
4394 }
4395
4396 /* Linux has struct statfs which has a different layout */
4397 gboolean
4398 GetVolumeInformation (const gunichar2 *path, gunichar2 *volumename, int volumesize, int *outserial, int *maxcomp, int *fsflags, gunichar2 *fsbuffer, int fsbuffersize)
4399 {
4400 gchar *utfpath;
4401 gchar *fstypename;
4402 gboolean status = FALSE;
4403 glong len;
4404
4405 // We only support getting the file system type
4406 if (fsbuffer == NULL)
4407 return 0;
4408
4409 utfpath = mono_unicode_to_external (path);
4410 if ((fstypename = get_fstypename (utfpath)) != NULL){
4411 gunichar2 *ret = g_utf8_to_utf16 (fstypename, -1, NULL, &len, NULL);
4412 if (ret != NULL && len < fsbuffersize){
4413 memcpy (fsbuffer, ret, len * sizeof (gunichar2));
4414 fsbuffer [len] = 0;
4415 status = TRUE;
4416 }
4417 if (ret != NULL)
4418 g_free (ret);
4419 g_free (fstypename);
4420 }
4421 g_free (utfpath);
4422 return status;
4423 }
4424 #endif
4425
4426 void
4427 _wapi_io_init (void)
4428 {
4429 mono_os_mutex_init (&stdhandle_mutex);
4430 mono_os_mutex_init (&file_share_mutex);
4431
4432 mono_w32handle_register_ops (MONO_W32HANDLE_FILE, &_wapi_file_ops);
4433 mono_w32handle_register_ops (MONO_W32HANDLE_CONSOLE, &_wapi_console_ops);
4434 mono_w32handle_register_ops (MONO_W32HANDLE_FIND, &_wapi_find_ops);
4435 mono_w32handle_register_ops (MONO_W32HANDLE_PIPE, &_wapi_pipe_ops);
4436
4437 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_FILE, */
4438 /* MONO_W32HANDLE_CAP_WAIT); */
4439 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_CONSOLE, */
4440 /* MONO_W32HANDLE_CAP_WAIT); */
4441
4442 if (g_getenv ("MONO_STRICT_IO_EMULATION"))
4443 lock_while_writing = TRUE;
4444 }
4445
4446 void
4447 _wapi_io_cleanup (void)
4448 {
4449 mono_os_mutex_destroy (&file_share_mutex);
4450
4451 if (file_share_hash)
4452 g_hash_table_destroy (file_share_hash);
4453 }
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