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Merge pull request #3715 from kumpera/fix-44707
[mono-project.git] / mono / io-layer / io.c
blob661067dc7b27b1461c9ee63858da5c519e0256f2
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/timefuncs-private.h>
43 #include <mono/io-layer/io-portability.h>
44 #include <mono/io-layer/io-trace.h>
45 #include <mono/utils/strenc.h>
46 #include <mono/utils/mono-once.h>
47 #include <mono/utils/mono-logger-internals.h>
48 #include <mono/utils/w32handle.h>
49
50 /*
51 * If SHM is disabled, this will point to a hash of _WapiFileShare structures, otherwise
52 * it will be NULL. We use this instead of _wapi_fileshare_layout to avoid allocating a
53 * 4MB array.
54 */
55 static GHashTable *file_share_hash;
56 static mono_mutex_t file_share_mutex;
57
58 static void
59 _wapi_handle_share_release (_WapiFileShare *share_info)
60 {
61 /* Prevent new entries racing with us */
62 mono_os_mutex_lock (&file_share_mutex);
63
64 g_assert (share_info->handle_refs > 0);
65 share_info->handle_refs -= 1;
66
67 if (share_info->handle_refs == 0)
68 g_hash_table_remove (file_share_hash, share_info);
69
70 mono_os_mutex_unlock (&file_share_mutex);
71 }
72
73 static gint
74 wapi_share_info_equal (gconstpointer ka, gconstpointer kb)
75 {
76 const _WapiFileShare *s1 = (const _WapiFileShare *)ka;
77 const _WapiFileShare *s2 = (const _WapiFileShare *)kb;
78
79 return (s1->device == s2->device && s1->inode == s2->inode) ? 1 : 0;
80 }
81
82 static guint
83 wapi_share_info_hash (gconstpointer data)
84 {
85 const _WapiFileShare *s = (const _WapiFileShare *)data;
86
87 return s->inode;
88 }
89
90 static gboolean
91 _wapi_handle_get_or_set_share (guint64 device, guint64 inode, guint32 new_sharemode, guint32 new_access,
92 guint32 *old_sharemode, guint32 *old_access, struct _WapiFileShare **share_info)
93 {
94 struct _WapiFileShare *file_share;
95 gboolean exists = FALSE;
96
97 /* Prevent new entries racing with us */
98 mono_os_mutex_lock (&file_share_mutex);
99
100 _WapiFileShare tmp;
101
102 /*
103 * Instead of allocating a 4MB array, we use a hash table to keep track of this
104 * info. This is needed even if SHM is disabled, to track sharing inside
105 * the current process.
106 */
107 if (!file_share_hash)
108 file_share_hash = g_hash_table_new_full (wapi_share_info_hash, wapi_share_info_equal, NULL, g_free);
109
110 tmp.device = device;
111 tmp.inode = inode;
112
113 file_share = (_WapiFileShare *)g_hash_table_lookup (file_share_hash, &tmp);
114 if (file_share) {
115 *old_sharemode = file_share->sharemode;
116 *old_access = file_share->access;
117 *share_info = file_share;
118
119 g_assert (file_share->handle_refs > 0);
120 file_share->handle_refs += 1;
121
122 exists = TRUE;
123 } else {
124 file_share = g_new0 (_WapiFileShare, 1);
125
126 file_share->device = device;
127 file_share->inode = inode;
128 file_share->opened_by_pid = wapi_getpid ();
129 file_share->sharemode = new_sharemode;
130 file_share->access = new_access;
131 file_share->handle_refs = 1;
132 *share_info = file_share;
133
134 g_hash_table_insert (file_share_hash, file_share, file_share);
135 }
136
137 mono_os_mutex_unlock (&file_share_mutex);
138
139 return(exists);
140 }
141
142 static void file_close (gpointer handle, gpointer data);
143 static void file_details (gpointer data);
144 static const gchar* file_typename (void);
145 static gsize file_typesize (void);
146 static WapiFileType file_getfiletype(void);
147 static gboolean file_read(gpointer handle, gpointer buffer,
148 guint32 numbytes, guint32 *bytesread,
149 WapiOverlapped *overlapped);
150 static gboolean file_write(gpointer handle, gconstpointer buffer,
151 guint32 numbytes, guint32 *byteswritten,
152 WapiOverlapped *overlapped);
153 static gboolean file_flush(gpointer handle);
154 static guint32 file_seek(gpointer handle, gint32 movedistance,
155 gint32 *highmovedistance, WapiSeekMethod method);
156 static gboolean file_setendoffile(gpointer handle);
157 static guint32 file_getfilesize(gpointer handle, guint32 *highsize);
158 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
159 WapiFileTime *last_access,
160 WapiFileTime *last_write);
161 static gboolean file_setfiletime(gpointer handle,
162 const WapiFileTime *create_time,
163 const WapiFileTime *last_access,
164 const WapiFileTime *last_write);
165 static guint32 GetDriveTypeFromPath (const gchar *utf8_root_path_name);
166
167 /* File handle is only signalled for overlapped IO */
168 static MonoW32HandleOps _wapi_file_ops = {
169 file_close, /* close */
170 NULL, /* signal */
171 NULL, /* own */
172 NULL, /* is_owned */
173 NULL, /* special_wait */
174 NULL, /* prewait */
175 file_details, /* details */
176 file_typename, /* typename */
177 file_typesize, /* typesize */
178 };
179
180 static void console_close (gpointer handle, gpointer data);
181 static void console_details (gpointer data);
182 static const gchar* console_typename (void);
183 static gsize console_typesize (void);
184 static WapiFileType console_getfiletype(void);
185 static gboolean console_read(gpointer handle, gpointer buffer,
186 guint32 numbytes, guint32 *bytesread,
187 WapiOverlapped *overlapped);
188 static gboolean console_write(gpointer handle, gconstpointer buffer,
189 guint32 numbytes, guint32 *byteswritten,
190 WapiOverlapped *overlapped);
191
192 /* Console is mostly the same as file, except it can block waiting for
193 * input or output
194 */
195 static MonoW32HandleOps _wapi_console_ops = {
196 console_close, /* close */
197 NULL, /* signal */
198 NULL, /* own */
199 NULL, /* is_owned */
200 NULL, /* special_wait */
201 NULL, /* prewait */
202 console_details, /* details */
203 console_typename, /* typename */
204 console_typesize, /* typesize */
205 };
206
207 static const gchar* find_typename (void);
208 static gsize find_typesize (void);
209
210 static MonoW32HandleOps _wapi_find_ops = {
211 NULL, /* close */
212 NULL, /* signal */
213 NULL, /* own */
214 NULL, /* is_owned */
215 NULL, /* special_wait */
216 NULL, /* prewait */
217 NULL, /* details */
218 find_typename, /* typename */
219 find_typesize, /* typesize */
220 };
221
222 static void pipe_close (gpointer handle, gpointer data);
223 static void pipe_details (gpointer data);
224 static const gchar* pipe_typename (void);
225 static gsize pipe_typesize (void);
226 static WapiFileType pipe_getfiletype (void);
227 static gboolean pipe_read (gpointer handle, gpointer buffer, guint32 numbytes,
228 guint32 *bytesread, WapiOverlapped *overlapped);
229 static gboolean pipe_write (gpointer handle, gconstpointer buffer,
230 guint32 numbytes, guint32 *byteswritten,
231 WapiOverlapped *overlapped);
232
233 /* Pipe handles
234 */
235 static MonoW32HandleOps _wapi_pipe_ops = {
236 pipe_close, /* close */
237 NULL, /* signal */
238 NULL, /* own */
239 NULL, /* is_owned */
240 NULL, /* special_wait */
241 NULL, /* prewait */
242 pipe_details, /* details */
243 pipe_typename, /* typename */
244 pipe_typesize, /* typesize */
245 };
246
247 static const struct {
248 /* File, console and pipe handles */
249 WapiFileType (*getfiletype)(void);
250
251 /* File, console and pipe handles */
252 gboolean (*readfile)(gpointer handle, gpointer buffer,
253 guint32 numbytes, guint32 *bytesread,
254 WapiOverlapped *overlapped);
255 gboolean (*writefile)(gpointer handle, gconstpointer buffer,
256 guint32 numbytes, guint32 *byteswritten,
257 WapiOverlapped *overlapped);
258 gboolean (*flushfile)(gpointer handle);
259
260 /* File handles */
261 guint32 (*seek)(gpointer handle, gint32 movedistance,
262 gint32 *highmovedistance, WapiSeekMethod method);
263 gboolean (*setendoffile)(gpointer handle);
264 guint32 (*getfilesize)(gpointer handle, guint32 *highsize);
265 gboolean (*getfiletime)(gpointer handle, WapiFileTime *create_time,
266 WapiFileTime *last_access,
267 WapiFileTime *last_write);
268 gboolean (*setfiletime)(gpointer handle,
269 const WapiFileTime *create_time,
270 const WapiFileTime *last_access,
271 const WapiFileTime *last_write);
272 } io_ops[MONO_W32HANDLE_COUNT]={
273 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
274 /* file */
275 {file_getfiletype,
276 file_read, file_write,
277 file_flush, file_seek,
278 file_setendoffile,
279 file_getfilesize,
280 file_getfiletime,
281 file_setfiletime},
282 /* console */
283 {console_getfiletype,
284 console_read,
285 console_write,
286 NULL, NULL, NULL, NULL, NULL, NULL},
287 /* thread */
288 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
289 /* sem */
290 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
291 /* mutex */
292 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
293 /* event */
294 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
295 /* socket (will need at least read and write) */
296 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
297 /* find */
298 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
299 /* process */
300 {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
301 /* pipe */
302 {pipe_getfiletype,
303 pipe_read,
304 pipe_write,
305 NULL, NULL, NULL, NULL, NULL, NULL},
306 };
307
308 static gboolean lock_while_writing = FALSE;
309
310 /* Some utility functions.
311 */
312
313 /*
314 * Check if a file is writable by the current user.
315 *
316 * This is is a best effort kind of thing. It assumes a reasonable sane set
317 * of permissions by the underlying OS.
318 *
319 * We generally assume that basic unix permission bits are authoritative. Which might not
320 * be the case under systems with extended permissions systems (posix ACLs, SELinux, OSX/iOS sandboxing, etc)
321 *
322 * The choice of access as the fallback is due to the expected lower overhead compared to trying to open the file.
323 *
324 * The only expected problem with using access are for root, setuid or setgid programs as access is not consistent
325 * under those situations. It's to be expected that this should not happen in practice as those bits are very dangerous
326 * and should not be used with a dynamic runtime.
327 */
328 static gboolean
329 is_file_writable (struct stat *st, const char *path)
330 {
331 #if __APPLE__
332 // OS X Finder "locked" or `ls -lO` "uchg".
333 // This only covers one of several cases where an OS X file could be unwritable through special flags.
334 if (st->st_flags & (UF_IMMUTABLE|SF_IMMUTABLE))
335 return 0;
336 #endif
337
338 /* Is it globally writable? */
339 if (st->st_mode & S_IWOTH)
340 return 1;
341
342 /* Am I the owner? */
343 if ((st->st_uid == geteuid ()) && (st->st_mode & S_IWUSR))
344 return 1;
345
346 /* Am I in the same group? */
347 if ((st->st_gid == getegid ()) && (st->st_mode & S_IWGRP))
348 return 1;
349
350 /* Fallback to using access(2). It's not ideal as it might not take into consideration euid/egid
351 * but it's the only sane option we have on unix.
352 */
353 return access (path, W_OK) == 0;
354 }
355
356
357 static guint32 _wapi_stat_to_file_attributes (const gchar *pathname,
358 struct stat *buf,
359 struct stat *lbuf)
360 {
361 guint32 attrs = 0;
362 gchar *filename;
363
364 /* FIXME: this could definitely be better, but there seems to
365 * be no pattern to the attributes that are set
366 */
367
368 /* Sockets (0140000) != Directory (040000) + Regular file (0100000) */
369 if (S_ISSOCK (buf->st_mode))
370 buf->st_mode &= ~S_IFSOCK; /* don't consider socket protection */
371
372 filename = _wapi_basename (pathname);
373
374 if (S_ISDIR (buf->st_mode)) {
375 attrs = FILE_ATTRIBUTE_DIRECTORY;
376 if (!is_file_writable (buf, pathname)) {
377 attrs |= FILE_ATTRIBUTE_READONLY;
378 }
379 if (filename[0] == '.') {
380 attrs |= FILE_ATTRIBUTE_HIDDEN;
381 }
382 } else {
383 if (!is_file_writable (buf, pathname)) {
384 attrs = FILE_ATTRIBUTE_READONLY;
385
386 if (filename[0] == '.') {
387 attrs |= FILE_ATTRIBUTE_HIDDEN;
388 }
389 } else if (filename[0] == '.') {
390 attrs = FILE_ATTRIBUTE_HIDDEN;
391 } else {
392 attrs = FILE_ATTRIBUTE_NORMAL;
393 }
394 }
395
396 if (lbuf != NULL) {
397 if (S_ISLNK (lbuf->st_mode)) {
398 attrs |= FILE_ATTRIBUTE_REPARSE_POINT;
399 }
400 }
401
402 g_free (filename);
403
404 return attrs;
405 }
406
407 static void
408 _wapi_set_last_error_from_errno (void)
409 {
410 SetLastError (_wapi_get_win32_file_error (errno));
411 }
412
413 static void _wapi_set_last_path_error_from_errno (const gchar *dir,
414 const gchar *path)
415 {
416 if (errno == ENOENT) {
417 /* Check the path - if it's a missing directory then
418 * we need to set PATH_NOT_FOUND not FILE_NOT_FOUND
419 */
420 gchar *dirname;
421
422
423 if (dir == NULL) {
424 dirname = _wapi_dirname (path);
425 } else {
426 dirname = g_strdup (dir);
427 }
428
429 if (_wapi_access (dirname, F_OK) == 0) {
430 SetLastError (ERROR_FILE_NOT_FOUND);
431 } else {
432 SetLastError (ERROR_PATH_NOT_FOUND);
433 }
434
435 g_free (dirname);
436 } else {
437 _wapi_set_last_error_from_errno ();
438 }
439 }
440
441 /* Handle ops.
442 */
443 static void file_close (gpointer handle, gpointer data)
444 {
445 struct _WapiHandle_file *file_handle = (struct _WapiHandle_file *)data;
446 int fd = file_handle->fd;
447
448 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing file handle %p [%s]", __func__, handle,
449 file_handle->filename);
450
451 if (file_handle->attrs & FILE_FLAG_DELETE_ON_CLOSE)
452 _wapi_unlink (file_handle->filename);
453
454 g_free (file_handle->filename);
455
456 if (file_handle->share_info)
457 _wapi_handle_share_release (file_handle->share_info);
458
459 close (fd);
460 }
461
462 static void file_details (gpointer data)
463 {
464 struct _WapiHandle_file *file = (struct _WapiHandle_file *)data;
465
466 g_print ("[%20s] acc: %c%c%c, shr: %c%c%c, attrs: %5u",
467 file->filename,
468 file->fileaccess&GENERIC_READ?'R':'.',
469 file->fileaccess&GENERIC_WRITE?'W':'.',
470 file->fileaccess&GENERIC_EXECUTE?'X':'.',
471 file->sharemode&FILE_SHARE_READ?'R':'.',
472 file->sharemode&FILE_SHARE_WRITE?'W':'.',
473 file->sharemode&FILE_SHARE_DELETE?'D':'.',
474 file->attrs);
475 }
476
477 static const gchar* file_typename (void)
478 {
479 return "File";
480 }
481
482 static gsize file_typesize (void)
483 {
484 return sizeof (struct _WapiHandle_file);
485 }
486
487 static WapiFileType file_getfiletype(void)
488 {
489 return(FILE_TYPE_DISK);
490 }
491
492 static gboolean file_read(gpointer handle, gpointer buffer,
493 guint32 numbytes, guint32 *bytesread,
494 WapiOverlapped *overlapped)
495 {
496 struct _WapiHandle_file *file_handle;
497 gboolean ok;
498 int fd, ret;
499 MonoThreadInfo *info = mono_thread_info_current ();
500
501 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
502 (gpointer *)&file_handle);
503 if(ok==FALSE) {
504 g_warning ("%s: error looking up file handle %p", __func__,
505 handle);
506 SetLastError (ERROR_INVALID_HANDLE);
507 return(FALSE);
508 }
509
510 fd = file_handle->fd;
511 if(bytesread!=NULL) {
512 *bytesread=0;
513 }
514
515 if(!(file_handle->fileaccess & GENERIC_READ) &&
516 !(file_handle->fileaccess & GENERIC_ALL)) {
517 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
518 __func__, handle, file_handle->fileaccess);
519
520 SetLastError (ERROR_ACCESS_DENIED);
521 return(FALSE);
522 }
523
524 do {
525 ret = read (fd, buffer, numbytes);
526 } while (ret == -1 && errno == EINTR &&
527 !mono_thread_info_is_interrupt_state (info));
528
529 if(ret==-1) {
530 gint err = errno;
531
532 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
533 handle, strerror(err));
534 SetLastError (_wapi_get_win32_file_error (err));
535 return(FALSE);
536 }
537
538 if (bytesread != NULL) {
539 *bytesread = ret;
540 }
541
542 return(TRUE);
543 }
544
545 static gboolean file_write(gpointer handle, gconstpointer buffer,
546 guint32 numbytes, guint32 *byteswritten,
547 WapiOverlapped *overlapped G_GNUC_UNUSED)
548 {
549 struct _WapiHandle_file *file_handle;
550 gboolean ok;
551 int ret, fd;
552 off_t current_pos = 0;
553 MonoThreadInfo *info = mono_thread_info_current ();
554
555 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
556 (gpointer *)&file_handle);
557 if(ok==FALSE) {
558 g_warning ("%s: error looking up file handle %p", __func__,
559 handle);
560 SetLastError (ERROR_INVALID_HANDLE);
561 return(FALSE);
562 }
563
564 fd = file_handle->fd;
565
566 if(byteswritten!=NULL) {
567 *byteswritten=0;
568 }
569
570 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
571 !(file_handle->fileaccess & GENERIC_ALL)) {
572 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
573
574 SetLastError (ERROR_ACCESS_DENIED);
575 return(FALSE);
576 }
577
578 if (lock_while_writing) {
579 /* Need to lock the region we're about to write to,
580 * because we only do advisory locking on POSIX
581 * systems
582 */
583 current_pos = lseek (fd, (off_t)0, SEEK_CUR);
584 if (current_pos == -1) {
585 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
586 handle, strerror (errno));
587 _wapi_set_last_error_from_errno ();
588 return(FALSE);
589 }
590
591 if (_wapi_lock_file_region (fd, current_pos,
592 numbytes) == FALSE) {
593 /* The error has already been set */
594 return(FALSE);
595 }
596 }
597
598 do {
599 ret = write (fd, buffer, numbytes);
600 } while (ret == -1 && errno == EINTR &&
601 !mono_thread_info_is_interrupt_state (info));
602
603 if (lock_while_writing) {
604 _wapi_unlock_file_region (fd, current_pos, numbytes);
605 }
606
607 if (ret == -1) {
608 if (errno == EINTR) {
609 ret = 0;
610 } else {
611 _wapi_set_last_error_from_errno ();
612
613 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
614 __func__, handle, strerror(errno));
615
616 return(FALSE);
617 }
618 }
619 if (byteswritten != NULL) {
620 *byteswritten = ret;
621 }
622 return(TRUE);
623 }
624
625 static gboolean file_flush(gpointer handle)
626 {
627 struct _WapiHandle_file *file_handle;
628 gboolean ok;
629 int ret, fd;
630
631 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
632 (gpointer *)&file_handle);
633 if(ok==FALSE) {
634 g_warning ("%s: error looking up file handle %p", __func__,
635 handle);
636 SetLastError (ERROR_INVALID_HANDLE);
637 return(FALSE);
638 }
639
640 fd = file_handle->fd;
641
642 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
643 !(file_handle->fileaccess & GENERIC_ALL)) {
644 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
645
646 SetLastError (ERROR_ACCESS_DENIED);
647 return(FALSE);
648 }
649
650 ret=fsync(fd);
651 if (ret==-1) {
652 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fsync of handle %p error: %s", __func__, handle,
653 strerror(errno));
654
655 _wapi_set_last_error_from_errno ();
656 return(FALSE);
657 }
658
659 return(TRUE);
660 }
661
662 static guint32 file_seek(gpointer handle, gint32 movedistance,
663 gint32 *highmovedistance, WapiSeekMethod method)
664 {
665 struct _WapiHandle_file *file_handle;
666 gboolean ok;
667 gint64 offset, newpos;
668 int whence, fd;
669 guint32 ret;
670
671 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
672 (gpointer *)&file_handle);
673 if(ok==FALSE) {
674 g_warning ("%s: error looking up file handle %p", __func__,
675 handle);
676 SetLastError (ERROR_INVALID_HANDLE);
677 return(INVALID_SET_FILE_POINTER);
678 }
679
680 fd = file_handle->fd;
681
682 if(!(file_handle->fileaccess & GENERIC_READ) &&
683 !(file_handle->fileaccess & GENERIC_WRITE) &&
684 !(file_handle->fileaccess & GENERIC_ALL)) {
685 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
686
687 SetLastError (ERROR_ACCESS_DENIED);
688 return(INVALID_SET_FILE_POINTER);
689 }
690
691 switch(method) {
692 case FILE_BEGIN:
693 whence=SEEK_SET;
694 break;
695 case FILE_CURRENT:
696 whence=SEEK_CUR;
697 break;
698 case FILE_END:
699 whence=SEEK_END;
700 break;
701 default:
702 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: invalid seek type %d", __func__, method);
703
704 SetLastError (ERROR_INVALID_PARAMETER);
705 return(INVALID_SET_FILE_POINTER);
706 }
707
708 #ifdef HAVE_LARGE_FILE_SUPPORT
709 if(highmovedistance==NULL) {
710 offset=movedistance;
711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting offset to %lld (low %d)", __func__,
712 offset, movedistance);
713 } else {
714 offset=((gint64) *highmovedistance << 32) | (guint32)movedistance;
715
716 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting offset to %lld 0x%llx (high %d 0x%x, low %d 0x%x)", __func__, offset, offset, *highmovedistance, *highmovedistance, movedistance, movedistance);
717 }
718 #else
719 offset=movedistance;
720 #endif
721
722 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: moving handle %p by %lld bytes from %d", __func__,
723 handle, (long long)offset, whence);
724
725 #ifdef PLATFORM_ANDROID
726 /* bionic doesn't support -D_FILE_OFFSET_BITS=64 */
727 newpos=lseek64(fd, offset, whence);
728 #else
729 newpos=lseek(fd, offset, whence);
730 #endif
731 if(newpos==-1) {
732 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek on handle %p returned error %s",
733 __func__, handle, strerror(errno));
734
735 _wapi_set_last_error_from_errno ();
736 return(INVALID_SET_FILE_POINTER);
737 }
738
739 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lseek returns %lld", __func__, newpos);
740
741 #ifdef HAVE_LARGE_FILE_SUPPORT
742 ret=newpos & 0xFFFFFFFF;
743 if(highmovedistance!=NULL) {
744 *highmovedistance=newpos>>32;
745 }
746 #else
747 ret=newpos;
748 if(highmovedistance!=NULL) {
749 /* Accurate, but potentially dodgy :-) */
750 *highmovedistance=0;
751 }
752 #endif
753
754 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: move of handle %p returning %d/%d", __func__,
755 handle, ret, highmovedistance==NULL?0:*highmovedistance);
756
757 return(ret);
758 }
759
760 static gboolean file_setendoffile(gpointer handle)
761 {
762 struct _WapiHandle_file *file_handle;
763 gboolean ok;
764 struct stat statbuf;
765 off_t pos;
766 int ret, fd;
767 MonoThreadInfo *info = mono_thread_info_current ();
768
769 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
770 (gpointer *)&file_handle);
771 if(ok==FALSE) {
772 g_warning ("%s: error looking up file handle %p", __func__,
773 handle);
774 SetLastError (ERROR_INVALID_HANDLE);
775 return(FALSE);
776 }
777 fd = file_handle->fd;
778
779 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
780 !(file_handle->fileaccess & GENERIC_ALL)) {
781 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
782
783 SetLastError (ERROR_ACCESS_DENIED);
784 return(FALSE);
785 }
786
787 /* Find the current file position, and the file length. If
788 * the file position is greater than the length, write to
789 * extend the file with a hole. If the file position is less
790 * than the length, truncate the file.
791 */
792
793 ret=fstat(fd, &statbuf);
794 if(ret==-1) {
795 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
796 handle, strerror(errno));
797
798 _wapi_set_last_error_from_errno ();
799 return(FALSE);
800 }
801
802 pos=lseek(fd, (off_t)0, SEEK_CUR);
803 if(pos==-1) {
804 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p lseek failed: %s", __func__,
805 handle, strerror(errno));
806
807 _wapi_set_last_error_from_errno ();
808 return(FALSE);
809 }
810
811 #ifdef FTRUNCATE_DOESNT_EXTEND
812 off_t size = statbuf.st_size;
813 /* I haven't bothered to write the configure.ac stuff for this
814 * because I don't know if any platform needs it. I'm leaving
815 * this code just in case though
816 */
817 if(pos>size) {
818 /* Extend the file. Use write() here, because some
819 * manuals say that ftruncate() behaviour is undefined
820 * when the file needs extending. The POSIX spec says
821 * that on XSI-conformant systems it extends, so if
822 * every system we care about conforms, then we can
823 * drop this write.
824 */
825 do {
826 ret = write (fd, "", 1);
827 } while (ret == -1 && errno == EINTR &&
828 !mono_thread_info_is_interrupt_state (info));
829
830 if(ret==-1) {
831 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p extend write failed: %s", __func__, handle, strerror(errno));
832
833 _wapi_set_last_error_from_errno ();
834 return(FALSE);
835 }
836
837 /* And put the file position back after the write */
838 ret = lseek (fd, pos, SEEK_SET);
839 if (ret == -1) {
840 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p second lseek failed: %s",
841 __func__, handle, strerror(errno));
842
843 _wapi_set_last_error_from_errno ();
844 return(FALSE);
845 }
846 }
847 #endif
848
849 /* Native Client has no ftruncate function, even in standalone sel_ldr. */
850 #ifndef __native_client__
851 /* always truncate, because the extend write() adds an extra
852 * byte to the end of the file
853 */
854 do {
855 ret=ftruncate(fd, pos);
856 }
857 while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
858 if(ret==-1) {
859 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ftruncate failed: %s", __func__,
860 handle, strerror(errno));
861
862 _wapi_set_last_error_from_errno ();
863 return(FALSE);
864 }
865 #endif
866
867 return(TRUE);
868 }
869
870 static guint32 file_getfilesize(gpointer handle, guint32 *highsize)
871 {
872 struct _WapiHandle_file *file_handle;
873 gboolean ok;
874 struct stat statbuf;
875 guint32 size;
876 int ret;
877 int fd;
878
879 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
880 (gpointer *)&file_handle);
881 if(ok==FALSE) {
882 g_warning ("%s: error looking up file handle %p", __func__,
883 handle);
884 SetLastError (ERROR_INVALID_HANDLE);
885 return(INVALID_FILE_SIZE);
886 }
887 fd = file_handle->fd;
888
889 if(!(file_handle->fileaccess & GENERIC_READ) &&
890 !(file_handle->fileaccess & GENERIC_WRITE) &&
891 !(file_handle->fileaccess & GENERIC_ALL)) {
892 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ or GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
893
894 SetLastError (ERROR_ACCESS_DENIED);
895 return(INVALID_FILE_SIZE);
896 }
897
898 /* If the file has a size with the low bits 0xFFFFFFFF the
899 * caller can't tell if this is an error, so clear the error
900 * value
901 */
902 SetLastError (ERROR_SUCCESS);
903
904 ret = fstat(fd, &statbuf);
905 if (ret == -1) {
906 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__,
907 handle, strerror(errno));
908
909 _wapi_set_last_error_from_errno ();
910 return(INVALID_FILE_SIZE);
911 }
912
913 /* fstat indicates block devices as zero-length, so go a different path */
914 #ifdef BLKGETSIZE64
915 if (S_ISBLK(statbuf.st_mode)) {
916 guint64 bigsize;
917 if (ioctl(fd, BLKGETSIZE64, &bigsize) < 0) {
918 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p ioctl BLKGETSIZE64 failed: %s",
919 __func__, handle, strerror(errno));
920
921 _wapi_set_last_error_from_errno ();
922 return(INVALID_FILE_SIZE);
923 }
924
925 size = bigsize & 0xFFFFFFFF;
926 if (highsize != NULL) {
927 *highsize = bigsize>>32;
928 }
929
930 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning block device size %d/%d",
931 __func__, size, *highsize);
932
933 return(size);
934 }
935 #endif
936
937 #ifdef HAVE_LARGE_FILE_SUPPORT
938 size = statbuf.st_size & 0xFFFFFFFF;
939 if (highsize != NULL) {
940 *highsize = statbuf.st_size>>32;
941 }
942 #else
943 if (highsize != NULL) {
944 /* Accurate, but potentially dodgy :-) */
945 *highsize = 0;
946 }
947 size = statbuf.st_size;
948 #endif
949
950 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning size %d/%d", __func__, size, *highsize);
951
952 return(size);
953 }
954
955 static gboolean file_getfiletime(gpointer handle, WapiFileTime *create_time,
956 WapiFileTime *last_access,
957 WapiFileTime *last_write)
958 {
959 struct _WapiHandle_file *file_handle;
960 gboolean ok;
961 struct stat statbuf;
962 guint64 create_ticks, access_ticks, write_ticks;
963 int ret, fd;
964
965 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
966 (gpointer *)&file_handle);
967 if(ok==FALSE) {
968 g_warning ("%s: error looking up file handle %p", __func__,
969 handle);
970 SetLastError (ERROR_INVALID_HANDLE);
971 return(FALSE);
972 }
973 fd = file_handle->fd;
974
975 if(!(file_handle->fileaccess & GENERIC_READ) &&
976 !(file_handle->fileaccess & GENERIC_ALL)) {
977 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
978 __func__, handle, file_handle->fileaccess);
979
980 SetLastError (ERROR_ACCESS_DENIED);
981 return(FALSE);
982 }
983
984 ret=fstat(fd, &statbuf);
985 if(ret==-1) {
986 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
987 strerror(errno));
988
989 _wapi_set_last_error_from_errno ();
990 return(FALSE);
991 }
992
993 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: atime: %ld ctime: %ld mtime: %ld", __func__,
994 statbuf.st_atime, statbuf.st_ctime,
995 statbuf.st_mtime);
996
997 /* Try and guess a meaningful create time by using the older
998 * of atime or ctime
999 */
1000 /* The magic constant comes from msdn documentation
1001 * "Converting a time_t Value to a File Time"
1002 */
1003 if(statbuf.st_atime < statbuf.st_ctime) {
1004 create_ticks=((guint64)statbuf.st_atime*10000000)
1005 + 116444736000000000ULL;
1006 } else {
1007 create_ticks=((guint64)statbuf.st_ctime*10000000)
1008 + 116444736000000000ULL;
1009 }
1010
1011 access_ticks=((guint64)statbuf.st_atime*10000000)+116444736000000000ULL;
1012 write_ticks=((guint64)statbuf.st_mtime*10000000)+116444736000000000ULL;
1013
1014 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: aticks: %llu cticks: %llu wticks: %llu", __func__,
1015 access_ticks, create_ticks, write_ticks);
1016
1017 if(create_time!=NULL) {
1018 create_time->dwLowDateTime = create_ticks & 0xFFFFFFFF;
1019 create_time->dwHighDateTime = create_ticks >> 32;
1020 }
1021
1022 if(last_access!=NULL) {
1023 last_access->dwLowDateTime = access_ticks & 0xFFFFFFFF;
1024 last_access->dwHighDateTime = access_ticks >> 32;
1025 }
1026
1027 if(last_write!=NULL) {
1028 last_write->dwLowDateTime = write_ticks & 0xFFFFFFFF;
1029 last_write->dwHighDateTime = write_ticks >> 32;
1030 }
1031
1032 return(TRUE);
1033 }
1034
1035 static gboolean file_setfiletime(gpointer handle,
1036 const WapiFileTime *create_time G_GNUC_UNUSED,
1037 const WapiFileTime *last_access,
1038 const WapiFileTime *last_write)
1039 {
1040 struct _WapiHandle_file *file_handle;
1041 gboolean ok;
1042 struct utimbuf utbuf;
1043 struct stat statbuf;
1044 guint64 access_ticks, write_ticks;
1045 int ret, fd;
1046
1047 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FILE,
1048 (gpointer *)&file_handle);
1049 if(ok==FALSE) {
1050 g_warning ("%s: error looking up file handle %p", __func__,
1051 handle);
1052 SetLastError (ERROR_INVALID_HANDLE);
1053 return(FALSE);
1054 }
1055 fd = file_handle->fd;
1056
1057 if(!(file_handle->fileaccess & GENERIC_WRITE) &&
1058 !(file_handle->fileaccess & GENERIC_ALL)) {
1059 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, file_handle->fileaccess);
1060
1061 SetLastError (ERROR_ACCESS_DENIED);
1062 return(FALSE);
1063 }
1064
1065 if(file_handle->filename == NULL) {
1066 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p unknown filename", __func__, handle);
1067
1068 SetLastError (ERROR_INVALID_HANDLE);
1069 return(FALSE);
1070 }
1071
1072 /* Get the current times, so we can put the same times back in
1073 * the event that one of the FileTime structs is NULL
1074 */
1075 ret=fstat (fd, &statbuf);
1076 if(ret==-1) {
1077 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p fstat failed: %s", __func__, handle,
1078 strerror(errno));
1079
1080 SetLastError (ERROR_INVALID_PARAMETER);
1081 return(FALSE);
1082 }
1083
1084 if(last_access!=NULL) {
1085 access_ticks=((guint64)last_access->dwHighDateTime << 32) +
1086 last_access->dwLowDateTime;
1087 /* This is (time_t)0. We can actually go to INT_MIN,
1088 * but this will do for now.
1089 */
1090 if (access_ticks < 116444736000000000ULL) {
1091 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set access time too early",
1092 __func__);
1093 SetLastError (ERROR_INVALID_PARAMETER);
1094 return(FALSE);
1095 }
1096
1097 if (sizeof (utbuf.actime) == 4 && ((access_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1098 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time that is too big for a 32bits time_t",
1099 __func__);
1100 SetLastError (ERROR_INVALID_PARAMETER);
1101 return(FALSE);
1102 }
1103
1104 utbuf.actime=(access_ticks - 116444736000000000ULL) / 10000000;
1105 } else {
1106 utbuf.actime=statbuf.st_atime;
1107 }
1108
1109 if(last_write!=NULL) {
1110 write_ticks=((guint64)last_write->dwHighDateTime << 32) +
1111 last_write->dwLowDateTime;
1112 /* This is (time_t)0. We can actually go to INT_MIN,
1113 * but this will do for now.
1114 */
1115 if (write_ticks < 116444736000000000ULL) {
1116 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time too early",
1117 __func__);
1118 SetLastError (ERROR_INVALID_PARAMETER);
1119 return(FALSE);
1120 }
1121 if (sizeof (utbuf.modtime) == 4 && ((write_ticks - 116444736000000000ULL) / 10000000) > INT_MAX) {
1122 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: attempt to set write time that is too big for a 32bits time_t",
1123 __func__);
1124 SetLastError (ERROR_INVALID_PARAMETER);
1125 return(FALSE);
1126 }
1127
1128 utbuf.modtime=(write_ticks - 116444736000000000ULL) / 10000000;
1129 } else {
1130 utbuf.modtime=statbuf.st_mtime;
1131 }
1132
1133 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: setting handle %p access %ld write %ld", __func__,
1134 handle, utbuf.actime, utbuf.modtime);
1135
1136 ret = _wapi_utime (file_handle->filename, &utbuf);
1137 if (ret == -1) {
1138 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p [%s] utime failed: %s", __func__,
1139 handle, file_handle->filename, strerror(errno));
1140
1141 SetLastError (ERROR_INVALID_PARAMETER);
1142 return(FALSE);
1143 }
1144
1145 return(TRUE);
1146 }
1147
1148 static void console_close (gpointer handle, gpointer data)
1149 {
1150 struct _WapiHandle_file *console_handle = (struct _WapiHandle_file *)data;
1151 int fd = console_handle->fd;
1152
1153 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing console handle %p", __func__, handle);
1154
1155 g_free (console_handle->filename);
1156
1157 if (fd > 2) {
1158 if (console_handle->share_info)
1159 _wapi_handle_share_release (console_handle->share_info);
1160 close (fd);
1161 }
1162 }
1163
1164 static void console_details (gpointer data)
1165 {
1166 file_details (data);
1167 }
1168
1169 static const gchar* console_typename (void)
1170 {
1171 return "Console";
1172 }
1173
1174 static gsize console_typesize (void)
1175 {
1176 return sizeof (struct _WapiHandle_file);
1177 }
1178
1179 static WapiFileType console_getfiletype(void)
1180 {
1181 return(FILE_TYPE_CHAR);
1182 }
1183
1184 static gboolean console_read(gpointer handle, gpointer buffer,
1185 guint32 numbytes, guint32 *bytesread,
1186 WapiOverlapped *overlapped G_GNUC_UNUSED)
1187 {
1188 struct _WapiHandle_file *console_handle;
1189 gboolean ok;
1190 int ret, fd;
1191 MonoThreadInfo *info = mono_thread_info_current ();
1192
1193 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1194 (gpointer *)&console_handle);
1195 if(ok==FALSE) {
1196 g_warning ("%s: error looking up console handle %p", __func__,
1197 handle);
1198 SetLastError (ERROR_INVALID_HANDLE);
1199 return(FALSE);
1200 }
1201 fd = console_handle->fd;
1202
1203 if(bytesread!=NULL) {
1204 *bytesread=0;
1205 }
1206
1207 if(!(console_handle->fileaccess & GENERIC_READ) &&
1208 !(console_handle->fileaccess & GENERIC_ALL)) {
1209 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1210 __func__, handle, console_handle->fileaccess);
1211
1212 SetLastError (ERROR_ACCESS_DENIED);
1213 return(FALSE);
1214 }
1215
1216 do {
1217 ret=read(fd, buffer, numbytes);
1218 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1219
1220 if(ret==-1) {
1221 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__, handle,
1222 strerror(errno));
1223
1224 _wapi_set_last_error_from_errno ();
1225 return(FALSE);
1226 }
1227
1228 if(bytesread!=NULL) {
1229 *bytesread=ret;
1230 }
1231
1232 return(TRUE);
1233 }
1234
1235 static gboolean console_write(gpointer handle, gconstpointer buffer,
1236 guint32 numbytes, guint32 *byteswritten,
1237 WapiOverlapped *overlapped G_GNUC_UNUSED)
1238 {
1239 struct _WapiHandle_file *console_handle;
1240 gboolean ok;
1241 int ret, fd;
1242 MonoThreadInfo *info = mono_thread_info_current ();
1243
1244 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
1245 (gpointer *)&console_handle);
1246 if(ok==FALSE) {
1247 g_warning ("%s: error looking up console handle %p", __func__,
1248 handle);
1249 SetLastError (ERROR_INVALID_HANDLE);
1250 return(FALSE);
1251 }
1252 fd = console_handle->fd;
1253
1254 if(byteswritten!=NULL) {
1255 *byteswritten=0;
1256 }
1257
1258 if(!(console_handle->fileaccess & GENERIC_WRITE) &&
1259 !(console_handle->fileaccess & GENERIC_ALL)) {
1260 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, console_handle->fileaccess);
1261
1262 SetLastError (ERROR_ACCESS_DENIED);
1263 return(FALSE);
1264 }
1265
1266 do {
1267 ret = write(fd, buffer, numbytes);
1268 } while (ret == -1 && errno == EINTR &&
1269 !mono_thread_info_is_interrupt_state (info));
1270
1271 if (ret == -1) {
1272 if (errno == EINTR) {
1273 ret = 0;
1274 } else {
1275 _wapi_set_last_error_from_errno ();
1276
1277 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s",
1278 __func__, handle, strerror(errno));
1279
1280 return(FALSE);
1281 }
1282 }
1283 if(byteswritten!=NULL) {
1284 *byteswritten=ret;
1285 }
1286
1287 return(TRUE);
1288 }
1289
1290 static const gchar* find_typename (void)
1291 {
1292 return "Find";
1293 }
1294
1295 static gsize find_typesize (void)
1296 {
1297 return sizeof (struct _WapiHandle_find);
1298 }
1299
1300 static void pipe_close (gpointer handle, gpointer data)
1301 {
1302 struct _WapiHandle_file *pipe_handle = (struct _WapiHandle_file*)data;
1303 int fd = pipe_handle->fd;
1304
1305 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: closing pipe handle %p fd %d", __func__, handle, fd);
1306
1307 /* No filename with pipe handles */
1308
1309 if (pipe_handle->share_info)
1310 _wapi_handle_share_release (pipe_handle->share_info);
1311
1312 close (fd);
1313 }
1314
1315 static void pipe_details (gpointer data)
1316 {
1317 file_details (data);
1318 }
1319
1320 static const gchar* pipe_typename (void)
1321 {
1322 return "Pipe";
1323 }
1324
1325 static gsize pipe_typesize (void)
1326 {
1327 return sizeof (struct _WapiHandle_file);
1328 }
1329
1330 static WapiFileType pipe_getfiletype(void)
1331 {
1332 return(FILE_TYPE_PIPE);
1333 }
1334
1335 static gboolean pipe_read (gpointer handle, gpointer buffer,
1336 guint32 numbytes, guint32 *bytesread,
1337 WapiOverlapped *overlapped G_GNUC_UNUSED)
1338 {
1339 struct _WapiHandle_file *pipe_handle;
1340 gboolean ok;
1341 int ret, fd;
1342 MonoThreadInfo *info = mono_thread_info_current ();
1343
1344 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1345 (gpointer *)&pipe_handle);
1346 if(ok==FALSE) {
1347 g_warning ("%s: error looking up pipe handle %p", __func__,
1348 handle);
1349 SetLastError (ERROR_INVALID_HANDLE);
1350 return(FALSE);
1351 }
1352 fd = pipe_handle->fd;
1353
1354 if(bytesread!=NULL) {
1355 *bytesread=0;
1356 }
1357
1358 if(!(pipe_handle->fileaccess & GENERIC_READ) &&
1359 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1360 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_READ access: %u",
1361 __func__, handle, pipe_handle->fileaccess);
1362
1363 SetLastError (ERROR_ACCESS_DENIED);
1364 return(FALSE);
1365 }
1366
1367 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: reading up to %d bytes from pipe %p", __func__,
1368 numbytes, handle);
1369
1370 do {
1371 ret=read(fd, buffer, numbytes);
1372 } while (ret==-1 && errno==EINTR && !mono_thread_info_is_interrupt_state (info));
1373
1374 if (ret == -1) {
1375 if (errno == EINTR) {
1376 ret = 0;
1377 } else {
1378 _wapi_set_last_error_from_errno ();
1379
1380 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read of handle %p error: %s", __func__,
1381 handle, strerror(errno));
1382
1383 return(FALSE);
1384 }
1385 }
1386
1387 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: read %d bytes from pipe %p", __func__, ret, handle);
1388
1389 if(bytesread!=NULL) {
1390 *bytesread=ret;
1391 }
1392
1393 return(TRUE);
1394 }
1395
1396 static gboolean pipe_write(gpointer handle, gconstpointer buffer,
1397 guint32 numbytes, guint32 *byteswritten,
1398 WapiOverlapped *overlapped G_GNUC_UNUSED)
1399 {
1400 struct _WapiHandle_file *pipe_handle;
1401 gboolean ok;
1402 int ret, fd;
1403 MonoThreadInfo *info = mono_thread_info_current ();
1404
1405 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_PIPE,
1406 (gpointer *)&pipe_handle);
1407 if(ok==FALSE) {
1408 g_warning ("%s: error looking up pipe handle %p", __func__,
1409 handle);
1410 SetLastError (ERROR_INVALID_HANDLE);
1411 return(FALSE);
1412 }
1413 fd = pipe_handle->fd;
1414
1415 if(byteswritten!=NULL) {
1416 *byteswritten=0;
1417 }
1418
1419 if(!(pipe_handle->fileaccess & GENERIC_WRITE) &&
1420 !(pipe_handle->fileaccess & GENERIC_ALL)) {
1421 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: handle %p doesn't have GENERIC_WRITE access: %u", __func__, handle, pipe_handle->fileaccess);
1422
1423 SetLastError (ERROR_ACCESS_DENIED);
1424 return(FALSE);
1425 }
1426
1427 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: writing up to %d bytes to pipe %p", __func__, numbytes,
1428 handle);
1429
1430 do {
1431 ret = write (fd, buffer, numbytes);
1432 } while (ret == -1 && errno == EINTR &&
1433 !mono_thread_info_is_interrupt_state (info));
1434
1435 if (ret == -1) {
1436 if (errno == EINTR) {
1437 ret = 0;
1438 } else {
1439 _wapi_set_last_error_from_errno ();
1440
1441 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write of handle %p error: %s", __func__,
1442 handle, strerror(errno));
1443
1444 return(FALSE);
1445 }
1446 }
1447 if(byteswritten!=NULL) {
1448 *byteswritten=ret;
1449 }
1450
1451 return(TRUE);
1452 }
1453
1454 static int convert_flags(guint32 fileaccess, guint32 createmode)
1455 {
1456 int flags=0;
1457
1458 switch(fileaccess) {
1459 case GENERIC_READ:
1460 flags=O_RDONLY;
1461 break;
1462 case GENERIC_WRITE:
1463 flags=O_WRONLY;
1464 break;
1465 case GENERIC_READ|GENERIC_WRITE:
1466 flags=O_RDWR;
1467 break;
1468 default:
1469 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown access type 0x%x", __func__,
1470 fileaccess);
1471 break;
1472 }
1473
1474 switch(createmode) {
1475 case CREATE_NEW:
1476 flags|=O_CREAT|O_EXCL;
1477 break;
1478 case CREATE_ALWAYS:
1479 flags|=O_CREAT|O_TRUNC;
1480 break;
1481 case OPEN_EXISTING:
1482 break;
1483 case OPEN_ALWAYS:
1484 flags|=O_CREAT;
1485 break;
1486 case TRUNCATE_EXISTING:
1487 flags|=O_TRUNC;
1488 break;
1489 default:
1490 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Unknown create mode 0x%x", __func__,
1491 createmode);
1492 break;
1493 }
1494
1495 return(flags);
1496 }
1497
1498 #if 0 /* unused */
1499 static mode_t convert_perms(guint32 sharemode)
1500 {
1501 mode_t perms=0600;
1502
1503 if(sharemode&FILE_SHARE_READ) {
1504 perms|=044;
1505 }
1506 if(sharemode&FILE_SHARE_WRITE) {
1507 perms|=022;
1508 }
1509
1510 return(perms);
1511 }
1512 #endif
1513
1514 static gboolean share_allows_open (struct stat *statbuf, guint32 sharemode,
1515 guint32 fileaccess,
1516 struct _WapiFileShare **share_info)
1517 {
1518 gboolean file_already_shared;
1519 guint32 file_existing_share, file_existing_access;
1520
1521 file_already_shared = _wapi_handle_get_or_set_share (statbuf->st_dev, statbuf->st_ino, sharemode, fileaccess, &file_existing_share, &file_existing_access, share_info);
1522
1523 if (file_already_shared) {
1524 /* The reference to this share info was incremented
1525 * when we looked it up, so be careful to put it back
1526 * if we conclude we can't use this file.
1527 */
1528 if (file_existing_share == 0) {
1529 /* Quick and easy, no possibility to share */
1530 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing = NONE", __func__, fileaccess);
1531
1532 _wapi_handle_share_release (*share_info);
1533
1534 return(FALSE);
1535 }
1536
1537 if (((file_existing_share == FILE_SHARE_READ) &&
1538 (fileaccess != GENERIC_READ)) ||
1539 ((file_existing_share == FILE_SHARE_WRITE) &&
1540 (fileaccess != GENERIC_WRITE))) {
1541 /* New access mode doesn't match up */
1542 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing: 0x%x", __func__, fileaccess, file_existing_share);
1543
1544 _wapi_handle_share_release (*share_info);
1545
1546 return(FALSE);
1547 }
1548
1549 if (((file_existing_access & GENERIC_READ) &&
1550 !(sharemode & FILE_SHARE_READ)) ||
1551 ((file_existing_access & GENERIC_WRITE) &&
1552 !(sharemode & FILE_SHARE_WRITE))) {
1553 /* New share mode doesn't match up */
1554 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Access mode prevents open: requested share: 0x%x, file has access: 0x%x", __func__, sharemode, file_existing_access);
1555
1556 _wapi_handle_share_release (*share_info);
1557
1558 return(FALSE);
1559 }
1560 } else {
1561 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1562 }
1563
1564 return(TRUE);
1565 }
1566
1567
1568 static gboolean
1569 share_allows_delete (struct stat *statbuf, struct _WapiFileShare **share_info)
1570 {
1571 gboolean file_already_shared;
1572 guint32 file_existing_share, file_existing_access;
1573
1574 file_already_shared = _wapi_handle_get_or_set_share (statbuf->st_dev, statbuf->st_ino, FILE_SHARE_DELETE, GENERIC_READ, &file_existing_share, &file_existing_access, share_info);
1575
1576 if (file_already_shared) {
1577 /* The reference to this share info was incremented
1578 * when we looked it up, so be careful to put it back
1579 * if we conclude we can't use this file.
1580 */
1581 if (file_existing_share == 0) {
1582 /* Quick and easy, no possibility to share */
1583 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing = NONE", __func__, (*share_info)->access);
1584
1585 _wapi_handle_share_release (*share_info);
1586
1587 return(FALSE);
1588 }
1589
1590 if (!(file_existing_share & FILE_SHARE_DELETE)) {
1591 /* New access mode doesn't match up */
1592 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Share mode prevents open: requested access: 0x%x, file has sharing: 0x%x", __func__, (*share_info)->access, file_existing_share);
1593
1594 _wapi_handle_share_release (*share_info);
1595
1596 return(FALSE);
1597 }
1598 } else {
1599 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: New file!", __func__);
1600 }
1601
1602 return(TRUE);
1603 }
1604
1605 /**
1606 * CreateFile:
1607 * @name: a pointer to a NULL-terminated unicode string, that names
1608 * the file or other object to create.
1609 * @fileaccess: specifies the file access mode
1610 * @sharemode: whether the file should be shared. This parameter is
1611 * currently ignored.
1612 * @security: Ignored for now.
1613 * @createmode: specifies whether to create a new file, whether to
1614 * overwrite an existing file, whether to truncate the file, etc.
1615 * @attrs: specifies file attributes and flags. On win32 attributes
1616 * are characteristics of the file, not the handle, and are ignored
1617 * when an existing file is opened. Flags give the library hints on
1618 * how to process a file to optimise performance.
1619 * @template: the handle of an open %GENERIC_READ file that specifies
1620 * attributes to apply to a newly created file, ignoring @attrs.
1621 * Normally this parameter is NULL. This parameter is ignored when an
1622 * existing file is opened.
1623 *
1624 * Creates a new file handle. This only applies to normal files:
1625 * pipes are handled by CreatePipe(), and console handles are created
1626 * with GetStdHandle().
1627 *
1628 * Return value: the new handle, or %INVALID_HANDLE_VALUE on error.
1629 */
1630 gpointer CreateFile(const gunichar2 *name, guint32 fileaccess,
1631 guint32 sharemode, WapiSecurityAttributes *security,
1632 guint32 createmode, guint32 attrs,
1633 gpointer template_ G_GNUC_UNUSED)
1634 {
1635 struct _WapiHandle_file file_handle = {0};
1636 gpointer handle;
1637 int flags=convert_flags(fileaccess, createmode);
1638 /*mode_t perms=convert_perms(sharemode);*/
1639 /* we don't use sharemode, because that relates to sharing of
1640 * the file when the file is open and is already handled by
1641 * other code, perms instead are the on-disk permissions and
1642 * this is a sane default.
1643 */
1644 mode_t perms=0666;
1645 gchar *filename;
1646 int fd, ret;
1647 MonoW32HandleType handle_type;
1648 struct stat statbuf;
1649
1650 if (attrs & FILE_ATTRIBUTE_TEMPORARY)
1651 perms = 0600;
1652
1653 if (attrs & FILE_ATTRIBUTE_ENCRYPTED){
1654 SetLastError (ERROR_ENCRYPTION_FAILED);
1655 return INVALID_HANDLE_VALUE;
1656 }
1657
1658 if (name == NULL) {
1659 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1660
1661 SetLastError (ERROR_INVALID_NAME);
1662 return(INVALID_HANDLE_VALUE);
1663 }
1664
1665 filename = mono_unicode_to_external (name);
1666 if (filename == NULL) {
1667 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1668
1669 SetLastError (ERROR_INVALID_NAME);
1670 return(INVALID_HANDLE_VALUE);
1671 }
1672
1673 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Opening %s with share 0x%x and access 0x%x", __func__,
1674 filename, sharemode, fileaccess);
1675
1676 fd = _wapi_open (filename, flags, perms);
1677
1678 /* If we were trying to open a directory with write permissions
1679 * (e.g. O_WRONLY or O_RDWR), this call will fail with
1680 * EISDIR. However, this is a bit bogus because calls to
1681 * manipulate the directory (e.g. SetFileTime) will still work on
1682 * the directory because they use other API calls
1683 * (e.g. utime()). Hence, if we failed with the EISDIR error, try
1684 * to open the directory again without write permission.
1685 */
1686 if (fd == -1 && errno == EISDIR)
1687 {
1688 /* Try again but don't try to make it writable */
1689 fd = _wapi_open (filename, flags & ~(O_RDWR|O_WRONLY), perms);
1690 }
1691
1692 if (fd == -1) {
1693 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error opening file %s: %s", __func__, filename,
1694 strerror(errno));
1695 _wapi_set_last_path_error_from_errno (NULL, filename);
1696 g_free (filename);
1697
1698 return(INVALID_HANDLE_VALUE);
1699 }
1700
1701 if (fd >= mono_w32handle_fd_reserve) {
1702 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
1703
1704 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1705
1706 close (fd);
1707 g_free (filename);
1708
1709 return(INVALID_HANDLE_VALUE);
1710 }
1711
1712 ret = fstat (fd, &statbuf);
1713 if (ret == -1) {
1714 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: fstat error of file %s: %s", __func__,
1715 filename, strerror (errno));
1716 _wapi_set_last_error_from_errno ();
1717 g_free (filename);
1718 close (fd);
1719
1720 return(INVALID_HANDLE_VALUE);
1721 }
1722 #ifdef __native_client__
1723 /* Workaround: Native Client currently returns the same fake inode
1724 * for all files, so do a simple hash on the filename so we don't
1725 * use the same share info for each file.
1726 */
1727 statbuf.st_ino = g_str_hash(filename);
1728 #endif
1729
1730 if (share_allows_open (&statbuf, sharemode, fileaccess,
1731 &file_handle.share_info) == FALSE) {
1732 SetLastError (ERROR_SHARING_VIOLATION);
1733 g_free (filename);
1734 close (fd);
1735
1736 return (INVALID_HANDLE_VALUE);
1737 }
1738 if (file_handle.share_info == NULL) {
1739 /* No space, so no more files can be opened */
1740 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: No space in the share table", __func__);
1741
1742 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
1743 close (fd);
1744 g_free (filename);
1745
1746 return(INVALID_HANDLE_VALUE);
1747 }
1748
1749 file_handle.filename = filename;
1750
1751 if(security!=NULL) {
1752 //file_handle->security_attributes=_wapi_handle_scratch_store (
1753 //security, sizeof(WapiSecurityAttributes));
1754 }
1755
1756 file_handle.fd = fd;
1757 file_handle.fileaccess=fileaccess;
1758 file_handle.sharemode=sharemode;
1759 file_handle.attrs=attrs;
1760
1761 #ifdef HAVE_POSIX_FADVISE
1762 if (attrs & FILE_FLAG_SEQUENTIAL_SCAN)
1763 posix_fadvise (fd, 0, 0, POSIX_FADV_SEQUENTIAL);
1764 if (attrs & FILE_FLAG_RANDOM_ACCESS)
1765 posix_fadvise (fd, 0, 0, POSIX_FADV_RANDOM);
1766 #endif
1767
1768 #ifndef S_ISFIFO
1769 #define S_ISFIFO(m) ((m & S_IFIFO) != 0)
1770 #endif
1771 if (S_ISFIFO (statbuf.st_mode)) {
1772 handle_type = MONO_W32HANDLE_PIPE;
1773 /* maintain invariant that pipes have no filename */
1774 file_handle.filename = NULL;
1775 g_free (filename);
1776 filename = NULL;
1777 } else if (S_ISCHR (statbuf.st_mode)) {
1778 handle_type = MONO_W32HANDLE_CONSOLE;
1779 } else {
1780 handle_type = MONO_W32HANDLE_FILE;
1781 }
1782
1783 handle = mono_w32handle_new_fd (handle_type, fd, &file_handle);
1784 if (handle == INVALID_HANDLE_VALUE) {
1785 g_warning ("%s: error creating file handle", __func__);
1786 g_free (filename);
1787 close (fd);
1788
1789 SetLastError (ERROR_GEN_FAILURE);
1790 return(INVALID_HANDLE_VALUE);
1791 }
1792
1793 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: returning handle %p", __func__, handle);
1794
1795 return(handle);
1796 }
1797
1798 /**
1799 * DeleteFile:
1800 * @name: a pointer to a NULL-terminated unicode string, that names
1801 * the file to be deleted.
1802 *
1803 * Deletes file @name.
1804 *
1805 * Return value: %TRUE on success, %FALSE otherwise.
1806 */
1807 gboolean DeleteFile(const gunichar2 *name)
1808 {
1809 gchar *filename;
1810 int retval;
1811 gboolean ret = FALSE;
1812 guint32 attrs;
1813 #if 0
1814 struct stat statbuf;
1815 struct _WapiFileShare *shareinfo;
1816 #endif
1817
1818 if(name==NULL) {
1819 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1820
1821 SetLastError (ERROR_INVALID_NAME);
1822 return(FALSE);
1823 }
1824
1825 filename=mono_unicode_to_external(name);
1826 if(filename==NULL) {
1827 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1828
1829 SetLastError (ERROR_INVALID_NAME);
1830 return(FALSE);
1831 }
1832
1833 attrs = GetFileAttributes (name);
1834 if (attrs == INVALID_FILE_ATTRIBUTES) {
1835 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file attributes error", __func__);
1836 /* Error set by GetFileAttributes() */
1837 g_free (filename);
1838 return(FALSE);
1839 }
1840
1841 #if 0
1842 /* Check to make sure sharing allows us to open the file for
1843 * writing. See bug 323389.
1844 *
1845 * Do the checks that don't need an open file descriptor, for
1846 * simplicity's sake. If we really have to do the full checks
1847 * then we can implement that later.
1848 */
1849 if (_wapi_stat (filename, &statbuf) < 0) {
1850 _wapi_set_last_path_error_from_errno (NULL, filename);
1851 g_free (filename);
1852 return(FALSE);
1853 }
1854
1855 if (share_allows_open (&statbuf, 0, GENERIC_WRITE,
1856 &shareinfo) == FALSE) {
1857 SetLastError (ERROR_SHARING_VIOLATION);
1858 g_free (filename);
1859 return FALSE;
1860 }
1861 if (shareinfo)
1862 _wapi_handle_share_release (shareinfo);
1863 #endif
1864
1865 retval = _wapi_unlink (filename);
1866
1867 if (retval == -1) {
1868 _wapi_set_last_path_error_from_errno (NULL, filename);
1869 } else {
1870 ret = TRUE;
1871 }
1872
1873 g_free(filename);
1874
1875 return(ret);
1876 }
1877
1878 /**
1879 * MoveFile:
1880 * @name: a pointer to a NULL-terminated unicode string, that names
1881 * the file to be moved.
1882 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
1883 * new name for the file.
1884 *
1885 * Renames file @name to @dest_name.
1886 * MoveFile sets ERROR_ALREADY_EXISTS if the destination exists, except
1887 * when it is the same file as the source. In that case it silently succeeds.
1888 *
1889 * Return value: %TRUE on success, %FALSE otherwise.
1890 */
1891 gboolean MoveFile (const gunichar2 *name, const gunichar2 *dest_name)
1892 {
1893 gchar *utf8_name, *utf8_dest_name;
1894 int result, errno_copy;
1895 struct stat stat_src, stat_dest;
1896 gboolean ret = FALSE;
1897 struct _WapiFileShare *shareinfo;
1898
1899 if(name==NULL) {
1900 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1901
1902 SetLastError (ERROR_INVALID_NAME);
1903 return(FALSE);
1904 }
1905
1906 utf8_name = mono_unicode_to_external (name);
1907 if (utf8_name == NULL) {
1908 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1909
1910 SetLastError (ERROR_INVALID_NAME);
1911 return FALSE;
1912 }
1913
1914 if(dest_name==NULL) {
1915 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
1916
1917 g_free (utf8_name);
1918 SetLastError (ERROR_INVALID_NAME);
1919 return(FALSE);
1920 }
1921
1922 utf8_dest_name = mono_unicode_to_external (dest_name);
1923 if (utf8_dest_name == NULL) {
1924 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
1925
1926 g_free (utf8_name);
1927 SetLastError (ERROR_INVALID_NAME);
1928 return FALSE;
1929 }
1930
1931 /*
1932 * In C# land we check for the existence of src, but not for dest.
1933 * We check it here and return the failure if dest exists and is not
1934 * the same file as src.
1935 */
1936 if (_wapi_stat (utf8_name, &stat_src) < 0) {
1937 if (errno != ENOENT || _wapi_lstat (utf8_name, &stat_src) < 0) {
1938 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
1939 g_free (utf8_name);
1940 g_free (utf8_dest_name);
1941 return FALSE;
1942 }
1943 }
1944
1945 if (!_wapi_stat (utf8_dest_name, &stat_dest)) {
1946 if (stat_dest.st_dev != stat_src.st_dev ||
1947 stat_dest.st_ino != stat_src.st_ino) {
1948 g_free (utf8_name);
1949 g_free (utf8_dest_name);
1950 SetLastError (ERROR_ALREADY_EXISTS);
1951 return FALSE;
1952 }
1953 }
1954
1955 /* Check to make that we have delete sharing permission.
1956 * See https://bugzilla.xamarin.com/show_bug.cgi?id=17009
1957 *
1958 * Do the checks that don't need an open file descriptor, for
1959 * simplicity's sake. If we really have to do the full checks
1960 * then we can implement that later.
1961 */
1962 if (share_allows_delete (&stat_src, &shareinfo) == FALSE) {
1963 SetLastError (ERROR_SHARING_VIOLATION);
1964 return FALSE;
1965 }
1966 if (shareinfo)
1967 _wapi_handle_share_release (shareinfo);
1968
1969 result = _wapi_rename (utf8_name, utf8_dest_name);
1970 errno_copy = errno;
1971
1972 if (result == -1) {
1973 switch(errno_copy) {
1974 case EEXIST:
1975 SetLastError (ERROR_ALREADY_EXISTS);
1976 break;
1977
1978 case EXDEV:
1979 /* Ignore here, it is dealt with below */
1980 break;
1981
1982 case ENOENT:
1983 /* We already know src exists. Must be dest that doesn't exist. */
1984 _wapi_set_last_path_error_from_errno (NULL, utf8_dest_name);
1985 break;
1986
1987 default:
1988 _wapi_set_last_error_from_errno ();
1989 }
1990 }
1991
1992 g_free (utf8_name);
1993 g_free (utf8_dest_name);
1994
1995 if (result != 0 && errno_copy == EXDEV) {
1996 if (S_ISDIR (stat_src.st_mode)) {
1997 SetLastError (ERROR_NOT_SAME_DEVICE);
1998 return FALSE;
1999 }
2000 /* Try a copy to the new location, and delete the source */
2001 if (CopyFile (name, dest_name, TRUE)==FALSE) {
2002 /* CopyFile will set the error */
2003 return(FALSE);
2004 }
2005
2006 return(DeleteFile (name));
2007 }
2008
2009 if (result == 0) {
2010 ret = TRUE;
2011 }
2012
2013 return(ret);
2014 }
2015
2016 static gboolean
2017 write_file (int src_fd, int dest_fd, struct stat *st_src, gboolean report_errors)
2018 {
2019 int remain, n;
2020 char *buf, *wbuf;
2021 int buf_size = st_src->st_blksize;
2022 MonoThreadInfo *info = mono_thread_info_current ();
2023
2024 buf_size = buf_size < 8192 ? 8192 : (buf_size > 65536 ? 65536 : buf_size);
2025 buf = (char *) g_malloc (buf_size);
2026
2027 for (;;) {
2028 remain = read (src_fd, buf, buf_size);
2029 if (remain < 0) {
2030 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2031 continue;
2032
2033 if (report_errors)
2034 _wapi_set_last_error_from_errno ();
2035
2036 g_free (buf);
2037 return FALSE;
2038 }
2039 if (remain == 0) {
2040 break;
2041 }
2042
2043 wbuf = buf;
2044 while (remain > 0) {
2045 if ((n = write (dest_fd, wbuf, remain)) < 0) {
2046 if (errno == EINTR && !mono_thread_info_is_interrupt_state (info))
2047 continue;
2048
2049 if (report_errors)
2050 _wapi_set_last_error_from_errno ();
2051 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: write failed.", __func__);
2052 g_free (buf);
2053 return FALSE;
2054 }
2055
2056 remain -= n;
2057 wbuf += n;
2058 }
2059 }
2060
2061 g_free (buf);
2062 return TRUE ;
2063 }
2064
2065 /**
2066 * CopyFile:
2067 * @name: a pointer to a NULL-terminated unicode string, that names
2068 * the file to be copied.
2069 * @dest_name: a pointer to a NULL-terminated unicode string, that is the
2070 * new name for the file.
2071 * @fail_if_exists: if TRUE and dest_name exists, the copy will fail.
2072 *
2073 * Copies file @name to @dest_name
2074 *
2075 * Return value: %TRUE on success, %FALSE otherwise.
2076 */
2077 gboolean CopyFile (const gunichar2 *name, const gunichar2 *dest_name,
2078 gboolean fail_if_exists)
2079 {
2080 gchar *utf8_src, *utf8_dest;
2081 int src_fd, dest_fd;
2082 struct stat st, dest_st;
2083 struct utimbuf dest_time;
2084 gboolean ret = TRUE;
2085 int ret_utime;
2086
2087 if(name==NULL) {
2088 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
2089
2090 SetLastError (ERROR_INVALID_NAME);
2091 return(FALSE);
2092 }
2093
2094 utf8_src = mono_unicode_to_external (name);
2095 if (utf8_src == NULL) {
2096 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of source returned NULL",
2097 __func__);
2098
2099 SetLastError (ERROR_INVALID_PARAMETER);
2100 return(FALSE);
2101 }
2102
2103 if(dest_name==NULL) {
2104 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: dest is NULL", __func__);
2105
2106 g_free (utf8_src);
2107 SetLastError (ERROR_INVALID_NAME);
2108 return(FALSE);
2109 }
2110
2111 utf8_dest = mono_unicode_to_external (dest_name);
2112 if (utf8_dest == NULL) {
2113 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of dest returned NULL",
2114 __func__);
2115
2116 SetLastError (ERROR_INVALID_PARAMETER);
2117
2118 g_free (utf8_src);
2119
2120 return(FALSE);
2121 }
2122
2123 src_fd = _wapi_open (utf8_src, O_RDONLY, 0);
2124 if (src_fd < 0) {
2125 _wapi_set_last_path_error_from_errno (NULL, utf8_src);
2126
2127 g_free (utf8_src);
2128 g_free (utf8_dest);
2129
2130 return(FALSE);
2131 }
2132
2133 if (fstat (src_fd, &st) < 0) {
2134 _wapi_set_last_error_from_errno ();
2135
2136 g_free (utf8_src);
2137 g_free (utf8_dest);
2138 close (src_fd);
2139
2140 return(FALSE);
2141 }
2142
2143 /* Before trying to open/create the dest, we need to report a 'file busy'
2144 * error if src and dest are actually the same file. We do the check here to take
2145 * advantage of the IOMAP capability */
2146 if (!_wapi_stat (utf8_dest, &dest_st) && st.st_dev == dest_st.st_dev &&
2147 st.st_ino == dest_st.st_ino) {
2148
2149 g_free (utf8_src);
2150 g_free (utf8_dest);
2151 close (src_fd);
2152
2153 SetLastError (ERROR_SHARING_VIOLATION);
2154 return (FALSE);
2155 }
2156
2157 if (fail_if_exists) {
2158 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_EXCL, st.st_mode);
2159 } else {
2160 /* FIXME: it kinda sucks that this code path potentially scans
2161 * the directory twice due to the weird SetLastError()
2162 * behavior. */
2163 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_TRUNC, st.st_mode);
2164 if (dest_fd < 0) {
2165 /* The file does not exist, try creating it */
2166 dest_fd = _wapi_open (utf8_dest, O_WRONLY | O_CREAT | O_TRUNC, st.st_mode);
2167 } else {
2168 /* Apparently this error is set if we
2169 * overwrite the dest file
2170 */
2171 SetLastError (ERROR_ALREADY_EXISTS);
2172 }
2173 }
2174 if (dest_fd < 0) {
2175 _wapi_set_last_error_from_errno ();
2176
2177 g_free (utf8_src);
2178 g_free (utf8_dest);
2179 close (src_fd);
2180
2181 return(FALSE);
2182 }
2183
2184 if (!write_file (src_fd, dest_fd, &st, TRUE))
2185 ret = FALSE;
2186
2187 close (src_fd);
2188 close (dest_fd);
2189
2190 dest_time.modtime = st.st_mtime;
2191 dest_time.actime = st.st_atime;
2192 ret_utime = utime (utf8_dest, &dest_time);
2193 if (ret_utime == -1)
2194 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file [%s] utime failed: %s", __func__, utf8_dest, strerror(errno));
2195
2196 g_free (utf8_src);
2197 g_free (utf8_dest);
2198
2199 return ret;
2200 }
2201
2202 static gchar*
2203 convert_arg_to_utf8 (const gunichar2 *arg, const gchar *arg_name)
2204 {
2205 gchar *utf8_ret;
2206
2207 if (arg == NULL) {
2208 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: %s is NULL", __func__, arg_name);
2209 SetLastError (ERROR_INVALID_NAME);
2210 return NULL;
2211 }
2212
2213 utf8_ret = mono_unicode_to_external (arg);
2214 if (utf8_ret == NULL) {
2215 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion of %s returned NULL",
2216 __func__, arg_name);
2217 SetLastError (ERROR_INVALID_PARAMETER);
2218 return NULL;
2219 }
2220
2221 return utf8_ret;
2222 }
2223
2224 gboolean
2225 ReplaceFile (const gunichar2 *replacedFileName, const gunichar2 *replacementFileName,
2226 const gunichar2 *backupFileName, guint32 replaceFlags,
2227 gpointer exclude, gpointer reserved)
2228 {
2229 int result, backup_fd = -1,replaced_fd = -1;
2230 gchar *utf8_replacedFileName, *utf8_replacementFileName = NULL, *utf8_backupFileName = NULL;
2231 struct stat stBackup;
2232 gboolean ret = FALSE;
2233
2234 if (!(utf8_replacedFileName = convert_arg_to_utf8 (replacedFileName, "replacedFileName")))
2235 return FALSE;
2236 if (!(utf8_replacementFileName = convert_arg_to_utf8 (replacementFileName, "replacementFileName")))
2237 goto replace_cleanup;
2238 if (backupFileName != NULL) {
2239 if (!(utf8_backupFileName = convert_arg_to_utf8 (backupFileName, "backupFileName")))
2240 goto replace_cleanup;
2241 }
2242
2243 if (utf8_backupFileName) {
2244 // Open the backup file for read so we can restore the file if an error occurs.
2245 backup_fd = _wapi_open (utf8_backupFileName, O_RDONLY, 0);
2246 result = _wapi_rename (utf8_replacedFileName, utf8_backupFileName);
2247 if (result == -1)
2248 goto replace_cleanup;
2249 }
2250
2251 result = _wapi_rename (utf8_replacementFileName, utf8_replacedFileName);
2252 if (result == -1) {
2253 _wapi_set_last_path_error_from_errno (NULL, utf8_replacementFileName);
2254 _wapi_rename (utf8_backupFileName, utf8_replacedFileName);
2255 if (backup_fd != -1 && !fstat (backup_fd, &stBackup)) {
2256 replaced_fd = _wapi_open (utf8_backupFileName, O_WRONLY | O_CREAT | O_TRUNC,
2257 stBackup.st_mode);
2258
2259 if (replaced_fd == -1)
2260 goto replace_cleanup;
2261
2262 write_file (backup_fd, replaced_fd, &stBackup, FALSE);
2263 }
2264
2265 goto replace_cleanup;
2266 }
2267
2268 ret = TRUE;
2269
2270 replace_cleanup:
2271 g_free (utf8_replacedFileName);
2272 g_free (utf8_replacementFileName);
2273 g_free (utf8_backupFileName);
2274 if (backup_fd != -1)
2275 close (backup_fd);
2276 if (replaced_fd != -1)
2277 close (replaced_fd);
2278 return ret;
2279 }
2280
2281 /**
2282 * GetStdHandle:
2283 * @stdhandle: specifies the file descriptor
2284 *
2285 * Returns a handle for stdin, stdout, or stderr. Always returns the
2286 * same handle for the same @stdhandle.
2287 *
2288 * Return value: the handle, or %INVALID_HANDLE_VALUE on error
2289 */
2290
2291 static mono_mutex_t stdhandle_mutex;
2292
2293 gpointer GetStdHandle(WapiStdHandle stdhandle)
2294 {
2295 struct _WapiHandle_file *file_handle;
2296 gpointer handle;
2297 int fd;
2298 const gchar *name;
2299 gboolean ok;
2300
2301 switch(stdhandle) {
2302 case STD_INPUT_HANDLE:
2303 fd = 0;
2304 name = "<stdin>";
2305 break;
2306
2307 case STD_OUTPUT_HANDLE:
2308 fd = 1;
2309 name = "<stdout>";
2310 break;
2311
2312 case STD_ERROR_HANDLE:
2313 fd = 2;
2314 name = "<stderr>";
2315 break;
2316
2317 default:
2318 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unknown standard handle type", __func__);
2319
2320 SetLastError (ERROR_INVALID_PARAMETER);
2321 return(INVALID_HANDLE_VALUE);
2322 }
2323
2324 handle = GINT_TO_POINTER (fd);
2325
2326 mono_os_mutex_lock (&stdhandle_mutex);
2327
2328 ok = mono_w32handle_lookup (handle, MONO_W32HANDLE_CONSOLE,
2329 (gpointer *)&file_handle);
2330 if (ok == FALSE) {
2331 /* Need to create this console handle */
2332 handle = _wapi_stdhandle_create (fd, name);
2333
2334 if (handle == INVALID_HANDLE_VALUE) {
2335 SetLastError (ERROR_NO_MORE_FILES);
2336 goto done;
2337 }
2338 } else {
2339 /* Add a reference to this handle */
2340 mono_w32handle_ref (handle);
2341 }
2342
2343 done:
2344 mono_os_mutex_unlock (&stdhandle_mutex);
2345
2346 return(handle);
2347 }
2348
2349 /**
2350 * ReadFile:
2351 * @handle: The file handle to read from. The handle must have
2352 * %GENERIC_READ access.
2353 * @buffer: The buffer to store read data in
2354 * @numbytes: The maximum number of bytes to read
2355 * @bytesread: The actual number of bytes read is stored here. This
2356 * value can be zero if the handle is positioned at the end of the
2357 * file.
2358 * @overlapped: points to a required %WapiOverlapped structure if
2359 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2360 * otherwise.
2361 *
2362 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2363 * function reads up to @numbytes bytes from the file from the current
2364 * file position, and stores them in @buffer. If there are not enough
2365 * bytes left in the file, just the amount available will be read.
2366 * The actual number of bytes read is stored in @bytesread.
2367
2368 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2369 * file position is ignored and the read position is taken from data
2370 * in the @overlapped structure.
2371 *
2372 * Return value: %TRUE if the read succeeds (even if no bytes were
2373 * read due to an attempt to read past the end of the file), %FALSE on
2374 * error.
2375 */
2376 gboolean ReadFile(gpointer handle, gpointer buffer, guint32 numbytes,
2377 guint32 *bytesread, WapiOverlapped *overlapped)
2378 {
2379 MonoW32HandleType type;
2380
2381 type = mono_w32handle_get_type (handle);
2382
2383 if(io_ops[type].readfile==NULL) {
2384 SetLastError (ERROR_INVALID_HANDLE);
2385 return(FALSE);
2386 }
2387
2388 return(io_ops[type].readfile (handle, buffer, numbytes, bytesread,
2389 overlapped));
2390 }
2391
2392 /**
2393 * WriteFile:
2394 * @handle: The file handle to write to. The handle must have
2395 * %GENERIC_WRITE access.
2396 * @buffer: The buffer to read data from.
2397 * @numbytes: The maximum number of bytes to write.
2398 * @byteswritten: The actual number of bytes written is stored here.
2399 * If the handle is positioned at the file end, the length of the file
2400 * is extended. This parameter may be %NULL.
2401 * @overlapped: points to a required %WapiOverlapped structure if
2402 * @handle has the %FILE_FLAG_OVERLAPPED option set, should be NULL
2403 * otherwise.
2404 *
2405 * If @handle does not have the %FILE_FLAG_OVERLAPPED option set, this
2406 * function writes up to @numbytes bytes from @buffer to the file at
2407 * the current file position. If @handle is positioned at the end of
2408 * the file, the file is extended. The actual number of bytes written
2409 * is stored in @byteswritten.
2410 *
2411 * If @handle has the %FILE_FLAG_OVERLAPPED option set, the current
2412 * file position is ignored and the write position is taken from data
2413 * in the @overlapped structure.
2414 *
2415 * Return value: %TRUE if the write succeeds, %FALSE on error.
2416 */
2417 gboolean WriteFile(gpointer handle, gconstpointer buffer, guint32 numbytes,
2418 guint32 *byteswritten, WapiOverlapped *overlapped)
2419 {
2420 MonoW32HandleType type;
2421
2422 type = mono_w32handle_get_type (handle);
2423
2424 if(io_ops[type].writefile==NULL) {
2425 SetLastError (ERROR_INVALID_HANDLE);
2426 return(FALSE);
2427 }
2428
2429 return(io_ops[type].writefile (handle, buffer, numbytes, byteswritten,
2430 overlapped));
2431 }
2432
2433 /**
2434 * FlushFileBuffers:
2435 * @handle: Handle to open file. The handle must have
2436 * %GENERIC_WRITE access.
2437 *
2438 * Flushes buffers of the file and causes all unwritten data to
2439 * be written.
2440 *
2441 * Return value: %TRUE on success, %FALSE otherwise.
2442 */
2443 gboolean FlushFileBuffers(gpointer handle)
2444 {
2445 MonoW32HandleType type;
2446
2447 type = mono_w32handle_get_type (handle);
2448
2449 if(io_ops[type].flushfile==NULL) {
2450 SetLastError (ERROR_INVALID_HANDLE);
2451 return(FALSE);
2452 }
2453
2454 return(io_ops[type].flushfile (handle));
2455 }
2456
2457 /**
2458 * SetEndOfFile:
2459 * @handle: The file handle to set. The handle must have
2460 * %GENERIC_WRITE access.
2461 *
2462 * Moves the end-of-file position to the current position of the file
2463 * pointer. This function is used to truncate or extend a file.
2464 *
2465 * Return value: %TRUE on success, %FALSE otherwise.
2466 */
2467 gboolean SetEndOfFile(gpointer handle)
2468 {
2469 MonoW32HandleType type;
2470
2471 type = mono_w32handle_get_type (handle);
2472
2473 if (io_ops[type].setendoffile == NULL) {
2474 SetLastError (ERROR_INVALID_HANDLE);
2475 return(FALSE);
2476 }
2477
2478 return(io_ops[type].setendoffile (handle));
2479 }
2480
2481 /**
2482 * SetFilePointer:
2483 * @handle: The file handle to set. The handle must have
2484 * %GENERIC_READ or %GENERIC_WRITE access.
2485 * @movedistance: Low 32 bits of a signed value that specifies the
2486 * number of bytes to move the file pointer.
2487 * @highmovedistance: Pointer to the high 32 bits of a signed value
2488 * that specifies the number of bytes to move the file pointer, or
2489 * %NULL.
2490 * @method: The starting point for the file pointer move.
2491 *
2492 * Sets the file pointer of an open file.
2493 *
2494 * The distance to move the file pointer is calculated from
2495 * @movedistance and @highmovedistance: If @highmovedistance is %NULL,
2496 * @movedistance is the 32-bit signed value; otherwise, @movedistance
2497 * is the low 32 bits and @highmovedistance a pointer to the high 32
2498 * bits of a 64 bit signed value. A positive distance moves the file
2499 * pointer forward from the position specified by @method; a negative
2500 * distance moves the file pointer backward.
2501 *
2502 * If the library is compiled without large file support,
2503 * @highmovedistance is ignored and its value is set to zero on a
2504 * successful return.
2505 *
2506 * Return value: On success, the low 32 bits of the new file pointer.
2507 * If @highmovedistance is not %NULL, the high 32 bits of the new file
2508 * pointer are stored there. On failure, %INVALID_SET_FILE_POINTER.
2509 */
2510 guint32 SetFilePointer(gpointer handle, gint32 movedistance,
2511 gint32 *highmovedistance, WapiSeekMethod method)
2512 {
2513 MonoW32HandleType type;
2514
2515 type = mono_w32handle_get_type (handle);
2516
2517 if (io_ops[type].seek == NULL) {
2518 SetLastError (ERROR_INVALID_HANDLE);
2519 return(INVALID_SET_FILE_POINTER);
2520 }
2521
2522 return(io_ops[type].seek (handle, movedistance, highmovedistance,
2523 method));
2524 }
2525
2526 /**
2527 * GetFileType:
2528 * @handle: The file handle to test.
2529 *
2530 * Finds the type of file @handle.
2531 *
2532 * Return value: %FILE_TYPE_UNKNOWN - the type of the file @handle is
2533 * unknown. %FILE_TYPE_DISK - @handle is a disk file.
2534 * %FILE_TYPE_CHAR - @handle is a character device, such as a console.
2535 * %FILE_TYPE_PIPE - @handle is a named or anonymous pipe.
2536 */
2537 WapiFileType GetFileType(gpointer handle)
2538 {
2539 MonoW32HandleType type;
2540
2541 type = mono_w32handle_get_type (handle);
2542
2543 if (io_ops[type].getfiletype == NULL) {
2544 SetLastError (ERROR_INVALID_HANDLE);
2545 return(FILE_TYPE_UNKNOWN);
2546 }
2547
2548 return(io_ops[type].getfiletype ());
2549 }
2550
2551 /**
2552 * GetFileSize:
2553 * @handle: The file handle to query. The handle must have
2554 * %GENERIC_READ or %GENERIC_WRITE access.
2555 * @highsize: If non-%NULL, the high 32 bits of the file size are
2556 * stored here.
2557 *
2558 * Retrieves the size of the file @handle.
2559 *
2560 * If the library is compiled without large file support, @highsize
2561 * has its value set to zero on a successful return.
2562 *
2563 * Return value: On success, the low 32 bits of the file size. If
2564 * @highsize is non-%NULL then the high 32 bits of the file size are
2565 * stored here. On failure %INVALID_FILE_SIZE is returned.
2566 */
2567 guint32 GetFileSize(gpointer handle, guint32 *highsize)
2568 {
2569 MonoW32HandleType type;
2570
2571 type = mono_w32handle_get_type (handle);
2572
2573 if (io_ops[type].getfilesize == NULL) {
2574 SetLastError (ERROR_INVALID_HANDLE);
2575 return(INVALID_FILE_SIZE);
2576 }
2577
2578 return(io_ops[type].getfilesize (handle, highsize));
2579 }
2580
2581 /**
2582 * GetFileTime:
2583 * @handle: The file handle to query. The handle must have
2584 * %GENERIC_READ access.
2585 * @create_time: Points to a %WapiFileTime structure to receive the
2586 * number of ticks since the epoch that file was created. May be
2587 * %NULL.
2588 * @last_access: Points to a %WapiFileTime structure to receive the
2589 * number of ticks since the epoch when file was last accessed. May be
2590 * %NULL.
2591 * @last_write: Points to a %WapiFileTime structure to receive the
2592 * number of ticks since the epoch when file was last written to. May
2593 * be %NULL.
2594 *
2595 * Finds the number of ticks since the epoch that the file referenced
2596 * by @handle was created, last accessed and last modified. A tick is
2597 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2598 * GMT.
2599 *
2600 * Create time isn't recorded on POSIX file systems or reported by
2601 * stat(2), so that time is guessed by returning the oldest of the
2602 * other times.
2603 *
2604 * Return value: %TRUE on success, %FALSE otherwise.
2605 */
2606 gboolean GetFileTime(gpointer handle, WapiFileTime *create_time,
2607 WapiFileTime *last_access, WapiFileTime *last_write)
2608 {
2609 MonoW32HandleType type;
2610
2611 type = mono_w32handle_get_type (handle);
2612
2613 if (io_ops[type].getfiletime == NULL) {
2614 SetLastError (ERROR_INVALID_HANDLE);
2615 return(FALSE);
2616 }
2617
2618 return(io_ops[type].getfiletime (handle, create_time, last_access,
2619 last_write));
2620 }
2621
2622 /**
2623 * SetFileTime:
2624 * @handle: The file handle to set. The handle must have
2625 * %GENERIC_WRITE access.
2626 * @create_time: Points to a %WapiFileTime structure that contains the
2627 * number of ticks since the epoch that the file was created. May be
2628 * %NULL.
2629 * @last_access: Points to a %WapiFileTime structure that contains the
2630 * number of ticks since the epoch when the file was last accessed.
2631 * May be %NULL.
2632 * @last_write: Points to a %WapiFileTime structure that contains the
2633 * number of ticks since the epoch when the file was last written to.
2634 * May be %NULL.
2635 *
2636 * Sets the number of ticks since the epoch that the file referenced
2637 * by @handle was created, last accessed or last modified. A tick is
2638 * a 100 nanosecond interval. The epoch is Midnight, January 1 1601
2639 * GMT.
2640 *
2641 * Create time isn't recorded on POSIX file systems, and is ignored.
2642 *
2643 * Return value: %TRUE on success, %FALSE otherwise.
2644 */
2645 gboolean SetFileTime(gpointer handle, const WapiFileTime *create_time,
2646 const WapiFileTime *last_access,
2647 const WapiFileTime *last_write)
2648 {
2649 MonoW32HandleType type;
2650
2651 type = mono_w32handle_get_type (handle);
2652
2653 if (io_ops[type].setfiletime == NULL) {
2654 SetLastError (ERROR_INVALID_HANDLE);
2655 return(FALSE);
2656 }
2657
2658 return(io_ops[type].setfiletime (handle, create_time, last_access,
2659 last_write));
2660 }
2661
2662 /* A tick is a 100-nanosecond interval. File time epoch is Midnight,
2663 * January 1 1601 GMT
2664 */
2665
2666 #define TICKS_PER_MILLISECOND 10000L
2667 #define TICKS_PER_SECOND 10000000L
2668 #define TICKS_PER_MINUTE 600000000L
2669 #define TICKS_PER_HOUR 36000000000LL
2670 #define TICKS_PER_DAY 864000000000LL
2671
2672 #define isleap(y) ((y) % 4 == 0 && ((y) % 100 != 0 || (y) % 400 == 0))
2673
2674 static const guint16 mon_yday[2][13]={
2675 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
2676 {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366},
2677 };
2678
2679 /**
2680 * FileTimeToSystemTime:
2681 * @file_time: Points to a %WapiFileTime structure that contains the
2682 * number of ticks to convert.
2683 * @system_time: Points to a %WapiSystemTime structure to receive the
2684 * broken-out time.
2685 *
2686 * Converts a tick count into broken-out time values.
2687 *
2688 * Return value: %TRUE on success, %FALSE otherwise.
2689 */
2690 gboolean FileTimeToSystemTime(const WapiFileTime *file_time,
2691 WapiSystemTime *system_time)
2692 {
2693 gint64 file_ticks, totaldays, rem, y;
2694 const guint16 *ip;
2695
2696 if(system_time==NULL) {
2697 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: system_time NULL", __func__);
2698
2699 SetLastError (ERROR_INVALID_PARAMETER);
2700 return(FALSE);
2701 }
2702
2703 file_ticks=((gint64)file_time->dwHighDateTime << 32) +
2704 file_time->dwLowDateTime;
2705
2706 /* Really compares if file_ticks>=0x8000000000000000
2707 * (LLONG_MAX+1) but we're working with a signed value for the
2708 * year and day calculation to work later
2709 */
2710 if(file_ticks<0) {
2711 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: file_time too big", __func__);
2712
2713 SetLastError (ERROR_INVALID_PARAMETER);
2714 return(FALSE);
2715 }
2716
2717 totaldays=(file_ticks / TICKS_PER_DAY);
2718 rem = file_ticks % TICKS_PER_DAY;
2719 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld rem: %lld", __func__, totaldays, rem);
2720
2721 system_time->wHour=rem/TICKS_PER_HOUR;
2722 rem %= TICKS_PER_HOUR;
2723 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Hour: %d rem: %lld", __func__, system_time->wHour, rem);
2724
2725 system_time->wMinute = rem / TICKS_PER_MINUTE;
2726 rem %= TICKS_PER_MINUTE;
2727 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Minute: %d rem: %lld", __func__, system_time->wMinute,
2728 rem);
2729
2730 system_time->wSecond = rem / TICKS_PER_SECOND;
2731 rem %= TICKS_PER_SECOND;
2732 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Second: %d rem: %lld", __func__, system_time->wSecond,
2733 rem);
2734
2735 system_time->wMilliseconds = rem / TICKS_PER_MILLISECOND;
2736 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Milliseconds: %d", __func__,
2737 system_time->wMilliseconds);
2738
2739 /* January 1, 1601 was a Monday, according to Emacs calendar */
2740 system_time->wDayOfWeek = ((1 + totaldays) % 7) + 1;
2741 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day of week: %d", __func__, system_time->wDayOfWeek);
2742
2743 /* This algorithm to find year and month given days from epoch
2744 * from glibc
2745 */
2746 y=1601;
2747
2748 #define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
2749 #define LEAPS_THRU_END_OF(y) (DIV(y, 4) - DIV (y, 100) + DIV (y, 400))
2750
2751 while(totaldays < 0 || totaldays >= (isleap(y)?366:365)) {
2752 /* Guess a corrected year, assuming 365 days per year */
2753 gint64 yg = y + totaldays / 365 - (totaldays % 365 < 0);
2754 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld yg: %lld y: %lld", __func__,
2755 totaldays, yg,
2756 y);
2757 g_message("%s: LEAPS(yg): %lld LEAPS(y): %lld", __func__,
2758 LEAPS_THRU_END_OF(yg-1), LEAPS_THRU_END_OF(y-1));
2759
2760 /* Adjust days and y to match the guessed year. */
2761 totaldays -= ((yg - y) * 365
2762 + LEAPS_THRU_END_OF (yg - 1)
2763 - LEAPS_THRU_END_OF (y - 1));
2764 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2765 y = yg;
2766 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: y: %lld", __func__, y);
2767 }
2768
2769 system_time->wYear = y;
2770 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Year: %d", __func__, system_time->wYear);
2771
2772 ip = mon_yday[isleap(y)];
2773
2774 for(y=11; totaldays < ip[y]; --y) {
2775 continue;
2776 }
2777 totaldays-=ip[y];
2778 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: totaldays: %lld", __func__, totaldays);
2779
2780 system_time->wMonth = y + 1;
2781 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Month: %d", __func__, system_time->wMonth);
2782
2783 system_time->wDay = totaldays + 1;
2784 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Day: %d", __func__, system_time->wDay);
2785
2786 return(TRUE);
2787 }
2788
2789 gpointer FindFirstFile (const gunichar2 *pattern, WapiFindData *find_data)
2790 {
2791 struct _WapiHandle_find find_handle = {0};
2792 gpointer handle;
2793 gchar *utf8_pattern = NULL, *dir_part, *entry_part;
2794 int result;
2795
2796 if (pattern == NULL) {
2797 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: pattern is NULL", __func__);
2798
2799 SetLastError (ERROR_PATH_NOT_FOUND);
2800 return(INVALID_HANDLE_VALUE);
2801 }
2802
2803 utf8_pattern = mono_unicode_to_external (pattern);
2804 if (utf8_pattern == NULL) {
2805 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
2806
2807 SetLastError (ERROR_INVALID_NAME);
2808 return(INVALID_HANDLE_VALUE);
2809 }
2810
2811 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: looking for [%s]", __func__, utf8_pattern);
2812
2813 /* Figure out which bit of the pattern is the directory */
2814 dir_part = _wapi_dirname (utf8_pattern);
2815 entry_part = _wapi_basename (utf8_pattern);
2816
2817 #if 0
2818 /* Don't do this check for now, it breaks if directories
2819 * really do have metachars in their names (see bug 58116).
2820 * FIXME: Figure out a better solution to keep some checks...
2821 */
2822 if (strchr (dir_part, '*') || strchr (dir_part, '?')) {
2823 SetLastError (ERROR_INVALID_NAME);
2824 g_free (dir_part);
2825 g_free (entry_part);
2826 g_free (utf8_pattern);
2827 return(INVALID_HANDLE_VALUE);
2828 }
2829 #endif
2830
2831 /* The pattern can specify a directory or a set of files.
2832 *
2833 * The pattern can have wildcard characters ? and *, but only
2834 * in the section after the last directory delimiter. (Return
2835 * ERROR_INVALID_NAME if there are wildcards in earlier path
2836 * sections.) "*" has the usual 0-or-more chars meaning. "?"
2837 * means "match one character", "??" seems to mean "match one
2838 * or two characters", "???" seems to mean "match one, two or
2839 * three characters", etc. Windows will also try and match
2840 * the mangled "short name" of files, so 8 character patterns
2841 * with wildcards will show some surprising results.
2842 *
2843 * All the written documentation I can find says that '?'
2844 * should only match one character, and doesn't mention '??',
2845 * '???' etc. I'm going to assume that the strict behaviour
2846 * (ie '???' means three and only three characters) is the
2847 * correct one, because that lets me use fnmatch(3) rather
2848 * than mess around with regexes.
2849 */
2850
2851 find_handle.namelist = NULL;
2852 result = _wapi_io_scandir (dir_part, entry_part,
2853 &find_handle.namelist);
2854
2855 if (result == 0) {
2856 /* No files, which windows seems to call
2857 * FILE_NOT_FOUND
2858 */
2859 SetLastError (ERROR_FILE_NOT_FOUND);
2860 g_free (utf8_pattern);
2861 g_free (entry_part);
2862 g_free (dir_part);
2863 return (INVALID_HANDLE_VALUE);
2864 }
2865
2866 if (result < 0) {
2867 _wapi_set_last_path_error_from_errno (dir_part, NULL);
2868 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: scandir error: %s", __func__, g_strerror (errno));
2869 g_free (utf8_pattern);
2870 g_free (entry_part);
2871 g_free (dir_part);
2872 return (INVALID_HANDLE_VALUE);
2873 }
2874
2875 g_free (utf8_pattern);
2876 g_free (entry_part);
2877
2878 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Got %d matches", __func__, result);
2879
2880 find_handle.dir_part = dir_part;
2881 find_handle.num = result;
2882 find_handle.count = 0;
2883
2884 handle = mono_w32handle_new (MONO_W32HANDLE_FIND, &find_handle);
2885 if (handle == INVALID_HANDLE_VALUE) {
2886 g_warning ("%s: error creating find handle", __func__);
2887 g_free (dir_part);
2888 g_free (entry_part);
2889 g_free (utf8_pattern);
2890 SetLastError (ERROR_GEN_FAILURE);
2891
2892 return(INVALID_HANDLE_VALUE);
2893 }
2894
2895 if (handle != INVALID_HANDLE_VALUE &&
2896 !FindNextFile (handle, find_data)) {
2897 FindClose (handle);
2898 SetLastError (ERROR_NO_MORE_FILES);
2899 handle = INVALID_HANDLE_VALUE;
2900 }
2901
2902 return (handle);
2903 }
2904
2905 gboolean FindNextFile (gpointer handle, WapiFindData *find_data)
2906 {
2907 struct _WapiHandle_find *find_handle;
2908 gboolean ok;
2909 struct stat buf, linkbuf;
2910 int result;
2911 gchar *filename;
2912 gchar *utf8_filename, *utf8_basename;
2913 gunichar2 *utf16_basename;
2914 time_t create_time;
2915 glong bytes;
2916 int thr_ret;
2917 gboolean ret = FALSE;
2918
2919 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
2920 (gpointer *)&find_handle);
2921 if(ok==FALSE) {
2922 g_warning ("%s: error looking up find handle %p", __func__,
2923 handle);
2924 SetLastError (ERROR_INVALID_HANDLE);
2925 return(FALSE);
2926 }
2927
2928 thr_ret = mono_w32handle_lock_handle (handle);
2929 g_assert (thr_ret == 0);
2930
2931 retry:
2932 if (find_handle->count >= find_handle->num) {
2933 SetLastError (ERROR_NO_MORE_FILES);
2934 goto cleanup;
2935 }
2936
2937 /* stat next match */
2938
2939 filename = g_build_filename (find_handle->dir_part, find_handle->namelist[find_handle->count ++], NULL);
2940
2941 result = _wapi_stat (filename, &buf);
2942 if (result == -1 && errno == ENOENT) {
2943 /* Might be a dangling symlink */
2944 result = _wapi_lstat (filename, &buf);
2945 }
2946
2947 if (result != 0) {
2948 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: stat failed: %s", __func__, filename);
2949
2950 g_free (filename);
2951 goto retry;
2952 }
2953
2954 #ifndef __native_client__
2955 result = _wapi_lstat (filename, &linkbuf);
2956 if (result != 0) {
2957 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: lstat failed: %s", __func__, filename);
2958
2959 g_free (filename);
2960 goto retry;
2961 }
2962 #endif
2963
2964 utf8_filename = mono_utf8_from_external (filename);
2965 if (utf8_filename == NULL) {
2966 /* We couldn't turn this filename into utf8 (eg the
2967 * encoding of the name wasn't convertible), so just
2968 * ignore it.
2969 */
2970 g_warning ("%s: Bad encoding for '%s'\nConsider using MONO_EXTERNAL_ENCODINGS\n", __func__, filename);
2971
2972 g_free (filename);
2973 goto retry;
2974 }
2975 g_free (filename);
2976
2977 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Found [%s]", __func__, utf8_filename);
2978
2979 /* fill data block */
2980
2981 if (buf.st_mtime < buf.st_ctime)
2982 create_time = buf.st_mtime;
2983 else
2984 create_time = buf.st_ctime;
2985
2986 #ifdef __native_client__
2987 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, NULL);
2988 #else
2989 find_data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_filename, &buf, &linkbuf);
2990 #endif
2991
2992 _wapi_time_t_to_filetime (create_time, &find_data->ftCreationTime);
2993 _wapi_time_t_to_filetime (buf.st_atime, &find_data->ftLastAccessTime);
2994 _wapi_time_t_to_filetime (buf.st_mtime, &find_data->ftLastWriteTime);
2995
2996 if (find_data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
2997 find_data->nFileSizeHigh = 0;
2998 find_data->nFileSizeLow = 0;
2999 } else {
3000 find_data->nFileSizeHigh = buf.st_size >> 32;
3001 find_data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3002 }
3003
3004 find_data->dwReserved0 = 0;
3005 find_data->dwReserved1 = 0;
3006
3007 utf8_basename = _wapi_basename (utf8_filename);
3008 utf16_basename = g_utf8_to_utf16 (utf8_basename, -1, NULL, &bytes,
3009 NULL);
3010 if(utf16_basename==NULL) {
3011 g_free (utf8_basename);
3012 g_free (utf8_filename);
3013 goto retry;
3014 }
3015 ret = TRUE;
3016
3017 /* utf16 is 2 * utf8 */
3018 bytes *= 2;
3019
3020 memset (find_data->cFileName, '\0', (MAX_PATH*2));
3021
3022 /* Truncating a utf16 string like this might leave the last
3023 * char incomplete
3024 */
3025 memcpy (find_data->cFileName, utf16_basename,
3026 bytes<(MAX_PATH*2)-2?bytes:(MAX_PATH*2)-2);
3027
3028 find_data->cAlternateFileName [0] = 0; /* not used */
3029
3030 g_free (utf8_basename);
3031 g_free (utf8_filename);
3032 g_free (utf16_basename);
3033
3034 cleanup:
3035 thr_ret = mono_w32handle_unlock_handle (handle);
3036 g_assert (thr_ret == 0);
3037
3038 return(ret);
3039 }
3040
3041 /**
3042 * FindClose:
3043 * @wapi_handle: the find handle to close.
3044 *
3045 * Closes find handle @wapi_handle
3046 *
3047 * Return value: %TRUE on success, %FALSE otherwise.
3048 */
3049 gboolean FindClose (gpointer handle)
3050 {
3051 struct _WapiHandle_find *find_handle;
3052 gboolean ok;
3053 int thr_ret;
3054
3055 if (handle == NULL) {
3056 SetLastError (ERROR_INVALID_HANDLE);
3057 return(FALSE);
3058 }
3059
3060 ok=mono_w32handle_lookup (handle, MONO_W32HANDLE_FIND,
3061 (gpointer *)&find_handle);
3062 if(ok==FALSE) {
3063 g_warning ("%s: error looking up find handle %p", __func__,
3064 handle);
3065 SetLastError (ERROR_INVALID_HANDLE);
3066 return(FALSE);
3067 }
3068
3069 thr_ret = mono_w32handle_lock_handle (handle);
3070 g_assert (thr_ret == 0);
3071
3072 g_strfreev (find_handle->namelist);
3073 g_free (find_handle->dir_part);
3074
3075 thr_ret = mono_w32handle_unlock_handle (handle);
3076 g_assert (thr_ret == 0);
3077
3078 mono_w32handle_unref (handle);
3079
3080 return(TRUE);
3081 }
3082
3083 /**
3084 * CreateDirectory:
3085 * @name: a pointer to a NULL-terminated unicode string, that names
3086 * the directory to be created.
3087 * @security: ignored for now
3088 *
3089 * Creates directory @name
3090 *
3091 * Return value: %TRUE on success, %FALSE otherwise.
3092 */
3093 gboolean CreateDirectory (const gunichar2 *name,
3094 WapiSecurityAttributes *security)
3095 {
3096 gchar *utf8_name;
3097 int result;
3098
3099 if (name == NULL) {
3100 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3101
3102 SetLastError (ERROR_INVALID_NAME);
3103 return(FALSE);
3104 }
3105
3106 utf8_name = mono_unicode_to_external (name);
3107 if (utf8_name == NULL) {
3108 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3109
3110 SetLastError (ERROR_INVALID_NAME);
3111 return FALSE;
3112 }
3113
3114 result = _wapi_mkdir (utf8_name, 0777);
3115
3116 if (result == 0) {
3117 g_free (utf8_name);
3118 return TRUE;
3119 }
3120
3121 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3122 g_free (utf8_name);
3123 return FALSE;
3124 }
3125
3126 /**
3127 * RemoveDirectory:
3128 * @name: a pointer to a NULL-terminated unicode string, that names
3129 * the directory to be removed.
3130 *
3131 * Removes directory @name
3132 *
3133 * Return value: %TRUE on success, %FALSE otherwise.
3134 */
3135 gboolean RemoveDirectory (const gunichar2 *name)
3136 {
3137 gchar *utf8_name;
3138 int result;
3139
3140 if (name == NULL) {
3141 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3142
3143 SetLastError (ERROR_INVALID_NAME);
3144 return(FALSE);
3145 }
3146
3147 utf8_name = mono_unicode_to_external (name);
3148 if (utf8_name == NULL) {
3149 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3150
3151 SetLastError (ERROR_INVALID_NAME);
3152 return FALSE;
3153 }
3154
3155 result = _wapi_rmdir (utf8_name);
3156 if (result == -1) {
3157 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3158 g_free (utf8_name);
3159
3160 return(FALSE);
3161 }
3162 g_free (utf8_name);
3163
3164 return(TRUE);
3165 }
3166
3167 /**
3168 * GetFileAttributes:
3169 * @name: a pointer to a NULL-terminated unicode filename.
3170 *
3171 * Gets the attributes for @name;
3172 *
3173 * Return value: %INVALID_FILE_ATTRIBUTES on failure
3174 */
3175 guint32 GetFileAttributes (const gunichar2 *name)
3176 {
3177 gchar *utf8_name;
3178 struct stat buf, linkbuf;
3179 int result;
3180 guint32 ret;
3181
3182 if (name == NULL) {
3183 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3184
3185 SetLastError (ERROR_INVALID_NAME);
3186 return(FALSE);
3187 }
3188
3189 utf8_name = mono_unicode_to_external (name);
3190 if (utf8_name == NULL) {
3191 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3192
3193 SetLastError (ERROR_INVALID_PARAMETER);
3194 return (INVALID_FILE_ATTRIBUTES);
3195 }
3196
3197 result = _wapi_stat (utf8_name, &buf);
3198 if (result == -1 && errno == ENOENT) {
3199 /* Might be a dangling symlink... */
3200 result = _wapi_lstat (utf8_name, &buf);
3201 }
3202
3203 if (result != 0) {
3204 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3205 g_free (utf8_name);
3206 return (INVALID_FILE_ATTRIBUTES);
3207 }
3208
3209 #ifndef __native_client__
3210 result = _wapi_lstat (utf8_name, &linkbuf);
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 #endif
3217
3218 #ifdef __native_client__
3219 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, NULL);
3220 #else
3221 ret = _wapi_stat_to_file_attributes (utf8_name, &buf, &linkbuf);
3222 #endif
3223
3224 g_free (utf8_name);
3225
3226 return(ret);
3227 }
3228
3229 /**
3230 * GetFileAttributesEx:
3231 * @name: a pointer to a NULL-terminated unicode filename.
3232 * @level: must be GetFileExInfoStandard
3233 * @info: pointer to a WapiFileAttributesData structure
3234 *
3235 * Gets attributes, size and filetimes for @name;
3236 *
3237 * Return value: %TRUE on success, %FALSE on failure
3238 */
3239 gboolean GetFileAttributesEx (const gunichar2 *name, WapiGetFileExInfoLevels level, gpointer info)
3240 {
3241 gchar *utf8_name;
3242 WapiFileAttributesData *data;
3243
3244 struct stat buf, linkbuf;
3245 time_t create_time;
3246 int result;
3247
3248 if (level != GetFileExInfoStandard) {
3249 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: info level %d not supported.", __func__,
3250 level);
3251
3252 SetLastError (ERROR_INVALID_PARAMETER);
3253 return FALSE;
3254 }
3255
3256 if (name == NULL) {
3257 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3258
3259 SetLastError (ERROR_INVALID_NAME);
3260 return(FALSE);
3261 }
3262
3263 utf8_name = mono_unicode_to_external (name);
3264 if (utf8_name == NULL) {
3265 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3266
3267 SetLastError (ERROR_INVALID_PARAMETER);
3268 return FALSE;
3269 }
3270
3271 result = _wapi_stat (utf8_name, &buf);
3272 if (result == -1 && errno == ENOENT) {
3273 /* Might be a dangling symlink... */
3274 result = _wapi_lstat (utf8_name, &buf);
3275 }
3276
3277 if (result != 0) {
3278 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3279 g_free (utf8_name);
3280 return FALSE;
3281 }
3282
3283 result = _wapi_lstat (utf8_name, &linkbuf);
3284 if (result != 0) {
3285 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3286 g_free (utf8_name);
3287 return(FALSE);
3288 }
3289
3290 /* fill data block */
3291
3292 data = (WapiFileAttributesData *)info;
3293
3294 if (buf.st_mtime < buf.st_ctime)
3295 create_time = buf.st_mtime;
3296 else
3297 create_time = buf.st_ctime;
3298
3299 data->dwFileAttributes = _wapi_stat_to_file_attributes (utf8_name,
3300 &buf,
3301 &linkbuf);
3302
3303 g_free (utf8_name);
3304
3305 _wapi_time_t_to_filetime (create_time, &data->ftCreationTime);
3306 _wapi_time_t_to_filetime (buf.st_atime, &data->ftLastAccessTime);
3307 _wapi_time_t_to_filetime (buf.st_mtime, &data->ftLastWriteTime);
3308
3309 if (data->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
3310 data->nFileSizeHigh = 0;
3311 data->nFileSizeLow = 0;
3312 }
3313 else {
3314 data->nFileSizeHigh = buf.st_size >> 32;
3315 data->nFileSizeLow = buf.st_size & 0xFFFFFFFF;
3316 }
3317
3318 return TRUE;
3319 }
3320
3321 /**
3322 * SetFileAttributes
3323 * @name: name of file
3324 * @attrs: attributes to set
3325 *
3326 * Changes the attributes on a named file.
3327 *
3328 * Return value: %TRUE on success, %FALSE on failure.
3329 */
3330 extern gboolean SetFileAttributes (const gunichar2 *name, guint32 attrs)
3331 {
3332 /* FIXME: think of something clever to do on unix */
3333 gchar *utf8_name;
3334 struct stat buf;
3335 int result;
3336
3337 /*
3338 * Currently we only handle one *internal* case, with a value that is
3339 * not standard: 0x80000000, which means `set executable bit'
3340 */
3341
3342 if (name == NULL) {
3343 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: name is NULL", __func__);
3344
3345 SetLastError (ERROR_INVALID_NAME);
3346 return(FALSE);
3347 }
3348
3349 utf8_name = mono_unicode_to_external (name);
3350 if (utf8_name == NULL) {
3351 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
3352
3353 SetLastError (ERROR_INVALID_NAME);
3354 return FALSE;
3355 }
3356
3357 result = _wapi_stat (utf8_name, &buf);
3358 if (result == -1 && errno == ENOENT) {
3359 /* Might be a dangling symlink... */
3360 result = _wapi_lstat (utf8_name, &buf);
3361 }
3362
3363 if (result != 0) {
3364 _wapi_set_last_path_error_from_errno (NULL, utf8_name);
3365 g_free (utf8_name);
3366 return FALSE;
3367 }
3368
3369 /* Contrary to the documentation, ms allows NORMAL to be
3370 * specified along with other attributes, so dont bother to
3371 * catch that case here.
3372 */
3373 if (attrs & FILE_ATTRIBUTE_READONLY) {
3374 result = _wapi_chmod (utf8_name, buf.st_mode & ~(S_IWUSR | S_IWOTH | S_IWGRP));
3375 } else {
3376 result = _wapi_chmod (utf8_name, buf.st_mode | S_IWUSR);
3377 }
3378
3379 /* Ignore the other attributes for now */
3380
3381 if (attrs & 0x80000000){
3382 mode_t exec_mask = 0;
3383
3384 if ((buf.st_mode & S_IRUSR) != 0)
3385 exec_mask |= S_IXUSR;
3386
3387 if ((buf.st_mode & S_IRGRP) != 0)
3388 exec_mask |= S_IXGRP;
3389
3390 if ((buf.st_mode & S_IROTH) != 0)
3391 exec_mask |= S_IXOTH;
3392
3393 result = chmod (utf8_name, buf.st_mode | exec_mask);
3394 }
3395 /* Don't bother to reset executable (might need to change this
3396 * policy)
3397 */
3398
3399 g_free (utf8_name);
3400
3401 return(TRUE);
3402 }
3403
3404 /**
3405 * GetCurrentDirectory
3406 * @length: size of the buffer
3407 * @buffer: pointer to buffer that recieves path
3408 *
3409 * Retrieves the current directory for the current process.
3410 *
3411 * Return value: number of characters in buffer on success, zero on failure
3412 */
3413 extern guint32 GetCurrentDirectory (guint32 length, gunichar2 *buffer)
3414 {
3415 gunichar2 *utf16_path;
3416 glong count;
3417 gsize bytes;
3418
3419 #ifdef __native_client__
3420 gchar *path = g_get_current_dir ();
3421 if (length < strlen(path) + 1 || path == NULL)
3422 return 0;
3423 memcpy (buffer, path, strlen(path) + 1);
3424 #else
3425 if (getcwd ((char*)buffer, length) == NULL) {
3426 if (errno == ERANGE) { /*buffer length is not big enough */
3427 gchar *path = g_get_current_dir (); /*FIXME g_get_current_dir doesn't work with broken paths and calling it just to know the path length is silly*/
3428 if (path == NULL)
3429 return 0;
3430 utf16_path = mono_unicode_from_external (path, &bytes);
3431 g_free (utf16_path);
3432 g_free (path);
3433 return (bytes/2)+1;
3434 }
3435 _wapi_set_last_error_from_errno ();
3436 return 0;
3437 }
3438 #endif
3439
3440 utf16_path = mono_unicode_from_external ((gchar*)buffer, &bytes);
3441 count = (bytes/2)+1;
3442 g_assert (count <= length); /*getcwd must have failed before with ERANGE*/
3443
3444 /* Add the terminator */
3445 memset (buffer, '\0', bytes+2);
3446 memcpy (buffer, utf16_path, bytes);
3447
3448 g_free (utf16_path);
3449
3450 return count;
3451 }
3452
3453 /**
3454 * SetCurrentDirectory
3455 * @path: path to new directory
3456 *
3457 * Changes the directory path for the current process.
3458 *
3459 * Return value: %TRUE on success, %FALSE on failure.
3460 */
3461 extern gboolean SetCurrentDirectory (const gunichar2 *path)
3462 {
3463 gchar *utf8_path;
3464 gboolean result;
3465
3466 if (path == NULL) {
3467 SetLastError (ERROR_INVALID_PARAMETER);
3468 return(FALSE);
3469 }
3470
3471 utf8_path = mono_unicode_to_external (path);
3472 if (_wapi_chdir (utf8_path) != 0) {
3473 _wapi_set_last_error_from_errno ();
3474 result = FALSE;
3475 }
3476 else
3477 result = TRUE;
3478
3479 g_free (utf8_path);
3480 return result;
3481 }
3482
3483 gboolean CreatePipe (gpointer *readpipe, gpointer *writepipe,
3484 WapiSecurityAttributes *security G_GNUC_UNUSED, guint32 size)
3485 {
3486 struct _WapiHandle_file pipe_read_handle = {0};
3487 struct _WapiHandle_file pipe_write_handle = {0};
3488 gpointer read_handle;
3489 gpointer write_handle;
3490 int filedes[2];
3491 int ret;
3492
3493 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Creating pipe", __func__);
3494
3495 ret=pipe (filedes);
3496 if(ret==-1) {
3497 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Error creating pipe: %s", __func__,
3498 strerror (errno));
3499
3500 _wapi_set_last_error_from_errno ();
3501 return(FALSE);
3502 }
3503
3504 if (filedes[0] >= mono_w32handle_fd_reserve ||
3505 filedes[1] >= mono_w32handle_fd_reserve) {
3506 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: File descriptor is too big", __func__);
3507
3508 SetLastError (ERROR_TOO_MANY_OPEN_FILES);
3509
3510 close (filedes[0]);
3511 close (filedes[1]);
3512
3513 return(FALSE);
3514 }
3515
3516 /* filedes[0] is open for reading, filedes[1] for writing */
3517
3518 pipe_read_handle.fd = filedes [0];
3519 pipe_read_handle.fileaccess = GENERIC_READ;
3520 read_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[0],
3521 &pipe_read_handle);
3522 if (read_handle == INVALID_HANDLE_VALUE) {
3523 g_warning ("%s: error creating pipe read handle", __func__);
3524 close (filedes[0]);
3525 close (filedes[1]);
3526 SetLastError (ERROR_GEN_FAILURE);
3527
3528 return(FALSE);
3529 }
3530
3531 pipe_write_handle.fd = filedes [1];
3532 pipe_write_handle.fileaccess = GENERIC_WRITE;
3533 write_handle = mono_w32handle_new_fd (MONO_W32HANDLE_PIPE, filedes[1],
3534 &pipe_write_handle);
3535 if (write_handle == INVALID_HANDLE_VALUE) {
3536 g_warning ("%s: error creating pipe write handle", __func__);
3537 mono_w32handle_unref (read_handle);
3538
3539 close (filedes[0]);
3540 close (filedes[1]);
3541 SetLastError (ERROR_GEN_FAILURE);
3542
3543 return(FALSE);
3544 }
3545
3546 *readpipe = read_handle;
3547 *writepipe = write_handle;
3548
3549 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: Returning pipe: read handle %p, write handle %p",
3550 __func__, read_handle, write_handle);
3551
3552 return(TRUE);
3553 }
3554
3555 #ifdef HAVE_GETFSSTAT
3556 /* Darwin has getfsstat */
3557 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3558 {
3559 struct statfs *stats;
3560 int size, n, i;
3561 gunichar2 *dir;
3562 glong length, total = 0;
3563
3564 n = getfsstat (NULL, 0, MNT_NOWAIT);
3565 if (n == -1)
3566 return 0;
3567 size = n * sizeof (struct statfs);
3568 stats = (struct statfs *) g_malloc (size);
3569 if (stats == NULL)
3570 return 0;
3571 if (getfsstat (stats, size, MNT_NOWAIT) == -1){
3572 g_free (stats);
3573 return 0;
3574 }
3575 for (i = 0; i < n; i++){
3576 dir = g_utf8_to_utf16 (stats [i].f_mntonname, -1, NULL, &length, NULL);
3577 if (total + length < len){
3578 memcpy (buf + total, dir, sizeof (gunichar2) * length);
3579 buf [total+length] = 0;
3580 }
3581 g_free (dir);
3582 total += length + 1;
3583 }
3584 if (total < len)
3585 buf [total] = 0;
3586 total++;
3587 g_free (stats);
3588 return total;
3589 }
3590 #else
3591 /* In-place octal sequence replacement */
3592 static void
3593 unescape_octal (gchar *str)
3594 {
3595 gchar *rptr;
3596 gchar *wptr;
3597
3598 if (str == NULL)
3599 return;
3600
3601 rptr = wptr = str;
3602 while (*rptr != '\0') {
3603 if (*rptr == '\\') {
3604 char c;
3605 rptr++;
3606 c = (*(rptr++) - '0') << 6;
3607 c += (*(rptr++) - '0') << 3;
3608 c += *(rptr++) - '0';
3609 *wptr++ = c;
3610 } else if (wptr != rptr) {
3611 *wptr++ = *rptr++;
3612 } else {
3613 rptr++; wptr++;
3614 }
3615 }
3616 *wptr = '\0';
3617 }
3618 static gint32 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf);
3619
3620 #if __linux__
3621 #define GET_LOGICAL_DRIVE_STRINGS_BUFFER 512
3622 #define GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER 512
3623 #define GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER 64
3624
3625 typedef struct
3626 {
3627 glong total;
3628 guint32 buffer_index;
3629 guint32 mountpoint_index;
3630 guint32 field_number;
3631 guint32 allocated_size;
3632 guint32 fsname_index;
3633 guint32 fstype_index;
3634 gchar mountpoint [GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER + 1];
3635 gchar *mountpoint_allocated;
3636 gchar buffer [GET_LOGICAL_DRIVE_STRINGS_BUFFER];
3637 gchar fsname [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3638 gchar fstype [GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER + 1];
3639 ssize_t nbytes;
3640 gchar delimiter;
3641 gboolean check_mount_source;
3642 } LinuxMountInfoParseState;
3643
3644 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3645 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3646 static void append_to_mountpoint (LinuxMountInfoParseState *state);
3647 static gboolean add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state);
3648
3649 gint32 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3650 {
3651 int fd;
3652 gint32 ret = 0;
3653 LinuxMountInfoParseState state;
3654 gboolean (*parser)(guint32, gunichar2*, LinuxMountInfoParseState*) = NULL;
3655
3656 memset (buf, 0, len * sizeof (gunichar2));
3657 fd = open ("/proc/self/mountinfo", O_RDONLY);
3658 if (fd != -1)
3659 parser = GetLogicalDriveStrings_MountInfo;
3660 else {
3661 fd = open ("/proc/mounts", O_RDONLY);
3662 if (fd != -1)
3663 parser = GetLogicalDriveStrings_Mounts;
3664 }
3665
3666 if (!parser) {
3667 ret = GetLogicalDriveStrings_Mtab (len, buf);
3668 goto done_and_out;
3669 }
3670
3671 memset (&state, 0, sizeof (LinuxMountInfoParseState));
3672 state.field_number = 1;
3673 state.delimiter = ' ';
3674
3675 while ((state.nbytes = read (fd, state.buffer, GET_LOGICAL_DRIVE_STRINGS_BUFFER)) > 0) {
3676 state.buffer_index = 0;
3677
3678 while ((*parser)(len, buf, &state)) {
3679 if (state.buffer [state.buffer_index] == '\n') {
3680 gboolean quit = add_drive_string (len, buf, &state);
3681 state.field_number = 1;
3682 state.buffer_index++;
3683 if (state.mountpoint_allocated) {
3684 g_free (state.mountpoint_allocated);
3685 state.mountpoint_allocated = NULL;
3686 }
3687 if (quit) {
3688 ret = state.total;
3689 goto done_and_out;
3690 }
3691 }
3692 }
3693 };
3694 ret = state.total;
3695
3696 done_and_out:
3697 if (fd != -1)
3698 close (fd);
3699 return ret;
3700 }
3701
3702 static gboolean GetLogicalDriveStrings_Mounts (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3703 {
3704 gchar *ptr;
3705
3706 if (state->field_number == 1)
3707 state->check_mount_source = TRUE;
3708
3709 while (state->buffer_index < (guint32)state->nbytes) {
3710 if (state->buffer [state->buffer_index] == state->delimiter) {
3711 state->field_number++;
3712 switch (state->field_number) {
3713 case 2:
3714 state->mountpoint_index = 0;
3715 break;
3716
3717 case 3:
3718 if (state->mountpoint_allocated)
3719 state->mountpoint_allocated [state->mountpoint_index] = 0;
3720 else
3721 state->mountpoint [state->mountpoint_index] = 0;
3722 break;
3723
3724 default:
3725 ptr = (gchar*)memchr (state->buffer + state->buffer_index, '\n', GET_LOGICAL_DRIVE_STRINGS_BUFFER - state->buffer_index);
3726 if (ptr)
3727 state->buffer_index = (ptr - (gchar*)state->buffer) - 1;
3728 else
3729 state->buffer_index = state->nbytes;
3730 return TRUE;
3731 }
3732 state->buffer_index++;
3733 continue;
3734 } else if (state->buffer [state->buffer_index] == '\n')
3735 return TRUE;
3736
3737 switch (state->field_number) {
3738 case 1:
3739 if (state->check_mount_source) {
3740 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3741 /* We can ignore the rest, it's a device
3742 * path */
3743 state->check_mount_source = FALSE;
3744 state->fsname [state->fsname_index++] = '/';
3745 break;
3746 }
3747 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3748 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3749 }
3750 break;
3751
3752 case 2:
3753 append_to_mountpoint (state);
3754 break;
3755
3756 case 3:
3757 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3758 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3759 break;
3760 }
3761
3762 state->buffer_index++;
3763 }
3764
3765 return FALSE;
3766 }
3767
3768 static gboolean GetLogicalDriveStrings_MountInfo (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3769 {
3770 while (state->buffer_index < (guint32)state->nbytes) {
3771 if (state->buffer [state->buffer_index] == state->delimiter) {
3772 state->field_number++;
3773 switch (state->field_number) {
3774 case 5:
3775 state->mountpoint_index = 0;
3776 break;
3777
3778 case 6:
3779 if (state->mountpoint_allocated)
3780 state->mountpoint_allocated [state->mountpoint_index] = 0;
3781 else
3782 state->mountpoint [state->mountpoint_index] = 0;
3783 break;
3784
3785 case 7:
3786 state->delimiter = '-';
3787 break;
3788
3789 case 8:
3790 state->delimiter = ' ';
3791 break;
3792
3793 case 10:
3794 state->check_mount_source = TRUE;
3795 break;
3796 }
3797 state->buffer_index++;
3798 continue;
3799 } else if (state->buffer [state->buffer_index] == '\n')
3800 return TRUE;
3801
3802 switch (state->field_number) {
3803 case 5:
3804 append_to_mountpoint (state);
3805 break;
3806
3807 case 9:
3808 if (state->fstype_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3809 state->fstype [state->fstype_index++] = state->buffer [state->buffer_index];
3810 break;
3811
3812 case 10:
3813 if (state->check_mount_source) {
3814 if (state->fsname_index == 0 && state->buffer [state->buffer_index] == '/') {
3815 /* We can ignore the rest, it's a device
3816 * path */
3817 state->check_mount_source = FALSE;
3818 state->fsname [state->fsname_index++] = '/';
3819 break;
3820 }
3821 if (state->fsname_index < GET_LOGICAL_DRIVE_STRINGS_FSNAME_BUFFER)
3822 state->fsname [state->fsname_index++] = state->buffer [state->buffer_index];
3823 }
3824 break;
3825 }
3826
3827 state->buffer_index++;
3828 }
3829
3830 return FALSE;
3831 }
3832
3833 static void
3834 append_to_mountpoint (LinuxMountInfoParseState *state)
3835 {
3836 gchar ch = state->buffer [state->buffer_index];
3837 if (state->mountpoint_allocated) {
3838 if (state->mountpoint_index >= state->allocated_size) {
3839 guint32 newsize = (state->allocated_size << 1) + 1;
3840 gchar *newbuf = (gchar *)g_malloc0 (newsize * sizeof (gchar));
3841
3842 memcpy (newbuf, state->mountpoint_allocated, state->mountpoint_index);
3843 g_free (state->mountpoint_allocated);
3844 state->mountpoint_allocated = newbuf;
3845 state->allocated_size = newsize;
3846 }
3847 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3848 } else {
3849 if (state->mountpoint_index >= GET_LOGICAL_DRIVE_STRINGS_MOUNTPOINT_BUFFER) {
3850 state->allocated_size = (state->mountpoint_index << 1) + 1;
3851 state->mountpoint_allocated = (gchar *)g_malloc0 (state->allocated_size * sizeof (gchar));
3852 memcpy (state->mountpoint_allocated, state->mountpoint, state->mountpoint_index);
3853 state->mountpoint_allocated [state->mountpoint_index++] = ch;
3854 } else
3855 state->mountpoint [state->mountpoint_index++] = ch;
3856 }
3857 }
3858
3859 static gboolean
3860 add_drive_string (guint32 len, gunichar2 *buf, LinuxMountInfoParseState *state)
3861 {
3862 gboolean quit = FALSE;
3863 gboolean ignore_entry;
3864
3865 if (state->fsname_index == 1 && state->fsname [0] == '/')
3866 ignore_entry = FALSE;
3867 else if (memcmp ("overlay", state->fsname, state->fsname_index) == 0 ||
3868 memcmp ("aufs", state->fstype, state->fstype_index) == 0) {
3869 /* Don't ignore overlayfs and aufs - these might be used on Docker
3870 * (https://bugzilla.xamarin.com/show_bug.cgi?id=31021) */
3871 ignore_entry = FALSE;
3872 } else if (state->fsname_index == 0 || memcmp ("none", state->fsname, state->fsname_index) == 0) {
3873 ignore_entry = TRUE;
3874 } else if (state->fstype_index >= 5 && memcmp ("fuse.", state->fstype, 5) == 0) {
3875 /* Ignore GNOME's gvfs */
3876 if (state->fstype_index == 21 && memcmp ("fuse.gvfs-fuse-daemon", state->fstype, state->fstype_index) == 0)
3877 ignore_entry = TRUE;
3878 else
3879 ignore_entry = FALSE;
3880 } else if (state->fstype_index == 3 && memcmp ("nfs", state->fstype, state->fstype_index) == 0)
3881 ignore_entry = FALSE;
3882 else
3883 ignore_entry = TRUE;
3884
3885 if (!ignore_entry) {
3886 gunichar2 *dir;
3887 glong length;
3888 gchar *mountpoint = state->mountpoint_allocated ? state->mountpoint_allocated : state->mountpoint;
3889
3890 unescape_octal (mountpoint);
3891 dir = g_utf8_to_utf16 (mountpoint, -1, NULL, &length, NULL);
3892 if (state->total + length + 1 > len) {
3893 quit = TRUE;
3894 state->total = len * 2;
3895 } else {
3896 length++;
3897 memcpy (buf + state->total, dir, sizeof (gunichar2) * length);
3898 state->total += length;
3899 }
3900 g_free (dir);
3901 }
3902 state->fsname_index = 0;
3903 state->fstype_index = 0;
3904
3905 return quit;
3906 }
3907 #else
3908 gint32
3909 GetLogicalDriveStrings (guint32 len, gunichar2 *buf)
3910 {
3911 return GetLogicalDriveStrings_Mtab (len, buf);
3912 }
3913 #endif
3914 static gint32
3915 GetLogicalDriveStrings_Mtab (guint32 len, gunichar2 *buf)
3916 {
3917 FILE *fp;
3918 gunichar2 *ptr, *dir;
3919 glong length, total = 0;
3920 gchar buffer [512];
3921 gchar **splitted;
3922
3923 memset (buf, 0, sizeof (gunichar2) * (len + 1));
3924 buf [0] = '/';
3925 buf [1] = 0;
3926 buf [2] = 0;
3927
3928 /* Sigh, mntent and friends don't work well.
3929 * It stops on the first line that doesn't begin with a '/'.
3930 * (linux 2.6.5, libc 2.3.2.ds1-12) - Gonz */
3931 fp = fopen ("/etc/mtab", "rt");
3932 if (fp == NULL) {
3933 fp = fopen ("/etc/mnttab", "rt");
3934 if (fp == NULL)
3935 return 1;
3936 }
3937
3938 ptr = buf;
3939 while (fgets (buffer, 512, fp) != NULL) {
3940 if (*buffer != '/')
3941 continue;
3942
3943 splitted = g_strsplit (buffer, " ", 0);
3944 if (!*splitted || !*(splitted + 1)) {
3945 g_strfreev (splitted);
3946 continue;
3947 }
3948
3949 unescape_octal (*(splitted + 1));
3950 dir = g_utf8_to_utf16 (*(splitted + 1), -1, NULL, &length, NULL);
3951 g_strfreev (splitted);
3952 if (total + length + 1 > len) {
3953 fclose (fp);
3954 g_free (dir);
3955 return len * 2; /* guess */
3956 }
3957
3958 memcpy (ptr + total, dir, sizeof (gunichar2) * length);
3959 g_free (dir);
3960 total += length + 1;
3961 }
3962
3963 fclose (fp);
3964 return total;
3965 /* Commented out, does not work with my mtab!!! - Gonz */
3966 #ifdef NOTENABLED /* HAVE_MNTENT_H */
3967 {
3968 FILE *fp;
3969 struct mntent *mnt;
3970 gunichar2 *ptr, *dir;
3971 glong len, total = 0;
3972
3973
3974 fp = setmntent ("/etc/mtab", "rt");
3975 if (fp == NULL) {
3976 fp = setmntent ("/etc/mnttab", "rt");
3977 if (fp == NULL)
3978 return;
3979 }
3980
3981 ptr = buf;
3982 while ((mnt = getmntent (fp)) != NULL) {
3983 g_print ("GOT %s\n", mnt->mnt_dir);
3984 dir = g_utf8_to_utf16 (mnt->mnt_dir, &len, NULL, NULL, NULL);
3985 if (total + len + 1 > len) {
3986 return len * 2; /* guess */
3987 }
3988
3989 memcpy (ptr + total, dir, sizeof (gunichar2) * len);
3990 g_free (dir);
3991 total += len + 1;
3992 }
3993
3994 endmntent (fp);
3995 return total;
3996 }
3997 #endif
3998 }
3999 #endif
4000
4001 #if defined(HAVE_STATVFS) || defined(HAVE_STATFS)
4002 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, WapiULargeInteger *free_bytes_avail,
4003 WapiULargeInteger *total_number_of_bytes,
4004 WapiULargeInteger *total_number_of_free_bytes)
4005 {
4006 #ifdef HAVE_STATVFS
4007 struct statvfs fsstat;
4008 #elif defined(HAVE_STATFS)
4009 struct statfs fsstat;
4010 #endif
4011 gboolean isreadonly;
4012 gchar *utf8_path_name;
4013 int ret;
4014 unsigned long block_size;
4015
4016 if (path_name == NULL) {
4017 utf8_path_name = g_strdup (g_get_current_dir());
4018 if (utf8_path_name == NULL) {
4019 SetLastError (ERROR_DIRECTORY);
4020 return(FALSE);
4021 }
4022 }
4023 else {
4024 utf8_path_name = mono_unicode_to_external (path_name);
4025 if (utf8_path_name == NULL) {
4026 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4027
4028 SetLastError (ERROR_INVALID_NAME);
4029 return(FALSE);
4030 }
4031 }
4032
4033 do {
4034 #ifdef HAVE_STATVFS
4035 ret = statvfs (utf8_path_name, &fsstat);
4036 isreadonly = ((fsstat.f_flag & ST_RDONLY) == ST_RDONLY);
4037 block_size = fsstat.f_frsize;
4038 #elif defined(HAVE_STATFS)
4039 ret = statfs (utf8_path_name, &fsstat);
4040 #if defined (MNT_RDONLY)
4041 isreadonly = ((fsstat.f_flags & MNT_RDONLY) == MNT_RDONLY);
4042 #elif defined (MS_RDONLY)
4043 isreadonly = ((fsstat.f_flags & MS_RDONLY) == MS_RDONLY);
4044 #endif
4045 block_size = fsstat.f_bsize;
4046 #endif
4047 } while(ret == -1 && errno == EINTR);
4048
4049 g_free(utf8_path_name);
4050
4051 if (ret == -1) {
4052 _wapi_set_last_error_from_errno ();
4053 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: statvfs failed: %s", __func__, strerror (errno));
4054 return(FALSE);
4055 }
4056
4057 /* total number of free bytes for non-root */
4058 if (free_bytes_avail != NULL) {
4059 if (isreadonly) {
4060 free_bytes_avail->QuadPart = 0;
4061 }
4062 else {
4063 free_bytes_avail->QuadPart = block_size * (guint64)fsstat.f_bavail;
4064 }
4065 }
4066
4067 /* total number of bytes available for non-root */
4068 if (total_number_of_bytes != NULL) {
4069 total_number_of_bytes->QuadPart = block_size * (guint64)fsstat.f_blocks;
4070 }
4071
4072 /* total number of bytes available for root */
4073 if (total_number_of_free_bytes != NULL) {
4074 if (isreadonly) {
4075 total_number_of_free_bytes->QuadPart = 0;
4076 }
4077 else {
4078 total_number_of_free_bytes->QuadPart = block_size * (guint64)fsstat.f_bfree;
4079 }
4080 }
4081
4082 return(TRUE);
4083 }
4084 #else
4085 gboolean GetDiskFreeSpaceEx(const gunichar2 *path_name, WapiULargeInteger *free_bytes_avail,
4086 WapiULargeInteger *total_number_of_bytes,
4087 WapiULargeInteger *total_number_of_free_bytes)
4088 {
4089 if (free_bytes_avail != NULL) {
4090 free_bytes_avail->QuadPart = (guint64) -1;
4091 }
4092
4093 if (total_number_of_bytes != NULL) {
4094 total_number_of_bytes->QuadPart = (guint64) -1;
4095 }
4096
4097 if (total_number_of_free_bytes != NULL) {
4098 total_number_of_free_bytes->QuadPart = (guint64) -1;
4099 }
4100
4101 return(TRUE);
4102 }
4103 #endif
4104
4105 /*
4106 * General Unix support
4107 */
4108 typedef struct {
4109 guint32 drive_type;
4110 #if __linux__
4111 const long fstypeid;
4112 #endif
4113 const gchar* fstype;
4114 } _wapi_drive_type;
4115
4116 static _wapi_drive_type _wapi_drive_types[] = {
4117 #if PLATFORM_MACOSX
4118 { DRIVE_REMOTE, "afp" },
4119 { DRIVE_REMOTE, "autofs" },
4120 { DRIVE_CDROM, "cddafs" },
4121 { DRIVE_CDROM, "cd9660" },
4122 { DRIVE_RAMDISK, "devfs" },
4123 { DRIVE_FIXED, "exfat" },
4124 { DRIVE_RAMDISK, "fdesc" },
4125 { DRIVE_REMOTE, "ftp" },
4126 { DRIVE_FIXED, "hfs" },
4127 { DRIVE_FIXED, "msdos" },
4128 { DRIVE_REMOTE, "nfs" },
4129 { DRIVE_FIXED, "ntfs" },
4130 { DRIVE_REMOTE, "smbfs" },
4131 { DRIVE_FIXED, "udf" },
4132 { DRIVE_REMOTE, "webdav" },
4133 { DRIVE_UNKNOWN, NULL }
4134 #elif __linux__
4135 { DRIVE_FIXED, ADFS_SUPER_MAGIC, "adfs"},
4136 { DRIVE_FIXED, AFFS_SUPER_MAGIC, "affs"},
4137 { DRIVE_REMOTE, AFS_SUPER_MAGIC, "afs"},
4138 { DRIVE_RAMDISK, AUTOFS_SUPER_MAGIC, "autofs"},
4139 { DRIVE_RAMDISK, AUTOFS_SBI_MAGIC, "autofs4"},
4140 { DRIVE_REMOTE, CODA_SUPER_MAGIC, "coda" },
4141 { DRIVE_RAMDISK, CRAMFS_MAGIC, "cramfs"},
4142 { DRIVE_RAMDISK, CRAMFS_MAGIC_WEND, "cramfs"},
4143 { DRIVE_REMOTE, CIFS_MAGIC_NUMBER, "cifs"},
4144 { DRIVE_RAMDISK, DEBUGFS_MAGIC, "debugfs"},
4145 { DRIVE_RAMDISK, SYSFS_MAGIC, "sysfs"},
4146 { DRIVE_RAMDISK, SECURITYFS_MAGIC, "securityfs"},
4147 { DRIVE_RAMDISK, SELINUX_MAGIC, "selinuxfs"},
4148 { DRIVE_RAMDISK, RAMFS_MAGIC, "ramfs"},
4149 { DRIVE_FIXED, SQUASHFS_MAGIC, "squashfs"},
4150 { DRIVE_FIXED, EFS_SUPER_MAGIC, "efs"},
4151 { DRIVE_FIXED, EXT2_SUPER_MAGIC, "ext"},
4152 { DRIVE_FIXED, EXT3_SUPER_MAGIC, "ext"},
4153 { DRIVE_FIXED, EXT4_SUPER_MAGIC, "ext"},
4154 { DRIVE_REMOTE, XENFS_SUPER_MAGIC, "xenfs"},
4155 { DRIVE_FIXED, BTRFS_SUPER_MAGIC, "btrfs"},
4156 { DRIVE_FIXED, HFS_SUPER_MAGIC, "hfs"},
4157 { DRIVE_FIXED, HFSPLUS_SUPER_MAGIC, "hfsplus"},
4158 { DRIVE_FIXED, HPFS_SUPER_MAGIC, "hpfs"},
4159 { DRIVE_RAMDISK, HUGETLBFS_MAGIC, "hugetlbfs"},
4160 { DRIVE_CDROM, ISOFS_SUPER_MAGIC, "iso"},
4161 { DRIVE_FIXED, JFFS2_SUPER_MAGIC, "jffs2"},
4162 { DRIVE_RAMDISK, ANON_INODE_FS_MAGIC, "anon_inode"},
4163 { DRIVE_FIXED, JFS_SUPER_MAGIC, "jfs"},
4164 { DRIVE_FIXED, MINIX_SUPER_MAGIC, "minix"},
4165 { DRIVE_FIXED, MINIX_SUPER_MAGIC2, "minix v2"},
4166 { DRIVE_FIXED, MINIX2_SUPER_MAGIC, "minix2"},
4167 { DRIVE_FIXED, MINIX2_SUPER_MAGIC2, "minix2 v2"},
4168 { DRIVE_FIXED, MINIX3_SUPER_MAGIC, "minix3"},
4169 { DRIVE_FIXED, MSDOS_SUPER_MAGIC, "msdos"},
4170 { DRIVE_REMOTE, NCP_SUPER_MAGIC, "ncp"},
4171 { DRIVE_REMOTE, NFS_SUPER_MAGIC, "nfs"},
4172 { DRIVE_FIXED, NTFS_SB_MAGIC, "ntfs"},
4173 { DRIVE_RAMDISK, OPENPROM_SUPER_MAGIC, "openpromfs"},
4174 { DRIVE_RAMDISK, PROC_SUPER_MAGIC, "proc"},
4175 { DRIVE_FIXED, QNX4_SUPER_MAGIC, "qnx4"},
4176 { DRIVE_FIXED, REISERFS_SUPER_MAGIC, "reiserfs"},
4177 { DRIVE_RAMDISK, ROMFS_MAGIC, "romfs"},
4178 { DRIVE_REMOTE, SMB_SUPER_MAGIC, "samba"},
4179 { DRIVE_RAMDISK, CGROUP_SUPER_MAGIC, "cgroupfs"},
4180 { DRIVE_RAMDISK, FUTEXFS_SUPER_MAGIC, "futexfs"},
4181 { DRIVE_FIXED, SYSV2_SUPER_MAGIC, "sysv2"},
4182 { DRIVE_FIXED, SYSV4_SUPER_MAGIC, "sysv4"},
4183 { DRIVE_RAMDISK, TMPFS_MAGIC, "tmpfs"},
4184 { DRIVE_RAMDISK, DEVPTS_SUPER_MAGIC, "devpts"},
4185 { DRIVE_CDROM, UDF_SUPER_MAGIC, "udf"},
4186 { DRIVE_FIXED, UFS_MAGIC, "ufs"},
4187 { DRIVE_FIXED, UFS_MAGIC_BW, "ufs"},
4188 { DRIVE_FIXED, UFS2_MAGIC, "ufs2"},
4189 { DRIVE_FIXED, UFS_CIGAM, "ufs"},
4190 { DRIVE_RAMDISK, USBDEVICE_SUPER_MAGIC, "usbdev"},
4191 { DRIVE_FIXED, XENIX_SUPER_MAGIC, "xenix"},
4192 { DRIVE_FIXED, XFS_SB_MAGIC, "xfs"},
4193 { DRIVE_RAMDISK, FUSE_SUPER_MAGIC, "fuse"},
4194 { DRIVE_FIXED, V9FS_MAGIC, "9p"},
4195 { DRIVE_REMOTE, CEPH_SUPER_MAGIC, "ceph"},
4196 { DRIVE_RAMDISK, CONFIGFS_MAGIC, "configfs"},
4197 { DRIVE_RAMDISK, ECRYPTFS_SUPER_MAGIC, "eCryptfs"},
4198 { DRIVE_FIXED, EXOFS_SUPER_MAGIC, "exofs"},
4199 { DRIVE_FIXED, VXFS_SUPER_MAGIC, "vxfs"},
4200 { DRIVE_FIXED, VXFS_OLT_MAGIC, "vxfs_olt"},
4201 { DRIVE_REMOTE, GFS2_MAGIC, "gfs2"},
4202 { DRIVE_FIXED, LOGFS_MAGIC_U32, "logfs"},
4203 { DRIVE_FIXED, OCFS2_SUPER_MAGIC, "ocfs2"},
4204 { DRIVE_FIXED, OMFS_MAGIC, "omfs"},
4205 { DRIVE_FIXED, UBIFS_SUPER_MAGIC, "ubifs"},
4206 { DRIVE_UNKNOWN, 0, NULL}
4207 #else
4208 { DRIVE_RAMDISK, "ramfs" },
4209 { DRIVE_RAMDISK, "tmpfs" },
4210 { DRIVE_RAMDISK, "proc" },
4211 { DRIVE_RAMDISK, "sysfs" },
4212 { DRIVE_RAMDISK, "debugfs" },
4213 { DRIVE_RAMDISK, "devpts" },
4214 { DRIVE_RAMDISK, "securityfs" },
4215 { DRIVE_CDROM, "iso9660" },
4216 { DRIVE_FIXED, "ext2" },
4217 { DRIVE_FIXED, "ext3" },
4218 { DRIVE_FIXED, "ext4" },
4219 { DRIVE_FIXED, "sysv" },
4220 { DRIVE_FIXED, "reiserfs" },
4221 { DRIVE_FIXED, "ufs" },
4222 { DRIVE_FIXED, "vfat" },
4223 { DRIVE_FIXED, "msdos" },
4224 { DRIVE_FIXED, "udf" },
4225 { DRIVE_FIXED, "hfs" },
4226 { DRIVE_FIXED, "hpfs" },
4227 { DRIVE_FIXED, "qnx4" },
4228 { DRIVE_FIXED, "ntfs" },
4229 { DRIVE_FIXED, "ntfs-3g" },
4230 { DRIVE_REMOTE, "smbfs" },
4231 { DRIVE_REMOTE, "fuse" },
4232 { DRIVE_REMOTE, "nfs" },
4233 { DRIVE_REMOTE, "nfs4" },
4234 { DRIVE_REMOTE, "cifs" },
4235 { DRIVE_REMOTE, "ncpfs" },
4236 { DRIVE_REMOTE, "coda" },
4237 { DRIVE_REMOTE, "afs" },
4238 { DRIVE_UNKNOWN, NULL }
4239 #endif
4240 };
4241
4242 #if __linux__
4243 static guint32 _wapi_get_drive_type(long f_type)
4244 {
4245 _wapi_drive_type *current;
4246
4247 current = &_wapi_drive_types[0];
4248 while (current->drive_type != DRIVE_UNKNOWN) {
4249 if (current->fstypeid == f_type)
4250 return current->drive_type;
4251 current++;
4252 }
4253
4254 return DRIVE_UNKNOWN;
4255 }
4256 #else
4257 static guint32 _wapi_get_drive_type(const gchar* fstype)
4258 {
4259 _wapi_drive_type *current;
4260
4261 current = &_wapi_drive_types[0];
4262 while (current->drive_type != DRIVE_UNKNOWN) {
4263 if (strcmp (current->fstype, fstype) == 0)
4264 break;
4265
4266 current++;
4267 }
4268
4269 return current->drive_type;
4270 }
4271 #endif
4272
4273 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4274 static guint32
4275 GetDriveTypeFromPath (const char *utf8_root_path_name)
4276 {
4277 struct statfs buf;
4278
4279 if (statfs (utf8_root_path_name, &buf) == -1)
4280 return DRIVE_UNKNOWN;
4281 #if PLATFORM_MACOSX
4282 return _wapi_get_drive_type (buf.f_fstypename);
4283 #else
4284 return _wapi_get_drive_type (buf.f_type);
4285 #endif
4286 }
4287 #else
4288 static guint32
4289 GetDriveTypeFromPath (const gchar *utf8_root_path_name)
4290 {
4291 guint32 drive_type;
4292 FILE *fp;
4293 gchar buffer [512];
4294 gchar **splitted;
4295
4296 fp = fopen ("/etc/mtab", "rt");
4297 if (fp == NULL) {
4298 fp = fopen ("/etc/mnttab", "rt");
4299 if (fp == NULL)
4300 return(DRIVE_UNKNOWN);
4301 }
4302
4303 drive_type = DRIVE_NO_ROOT_DIR;
4304 while (fgets (buffer, 512, fp) != NULL) {
4305 splitted = g_strsplit (buffer, " ", 0);
4306 if (!*splitted || !*(splitted + 1) || !*(splitted + 2)) {
4307 g_strfreev (splitted);
4308 continue;
4309 }
4310
4311 /* compare given root_path_name with the one from mtab,
4312 if length of utf8_root_path_name is zero it must be the root dir */
4313 if (strcmp (*(splitted + 1), utf8_root_path_name) == 0 ||
4314 (strcmp (*(splitted + 1), "/") == 0 && strlen (utf8_root_path_name) == 0)) {
4315 drive_type = _wapi_get_drive_type (*(splitted + 2));
4316 /* it is possible this path might be mounted again with
4317 a known type...keep looking */
4318 if (drive_type != DRIVE_UNKNOWN) {
4319 g_strfreev (splitted);
4320 break;
4321 }
4322 }
4323
4324 g_strfreev (splitted);
4325 }
4326
4327 fclose (fp);
4328 return drive_type;
4329 }
4330 #endif
4331
4332 guint32 GetDriveType(const gunichar2 *root_path_name)
4333 {
4334 gchar *utf8_root_path_name;
4335 guint32 drive_type;
4336
4337 if (root_path_name == NULL) {
4338 utf8_root_path_name = g_strdup (g_get_current_dir());
4339 if (utf8_root_path_name == NULL) {
4340 return(DRIVE_NO_ROOT_DIR);
4341 }
4342 }
4343 else {
4344 utf8_root_path_name = mono_unicode_to_external (root_path_name);
4345 if (utf8_root_path_name == NULL) {
4346 MONO_TRACE (G_LOG_LEVEL_DEBUG, MONO_TRACE_IO_LAYER, "%s: unicode conversion returned NULL", __func__);
4347 return(DRIVE_NO_ROOT_DIR);
4348 }
4349
4350 /* strip trailing slash for compare below */
4351 if (g_str_has_suffix(utf8_root_path_name, "/") && utf8_root_path_name [1] != 0) {
4352 utf8_root_path_name[strlen(utf8_root_path_name) - 1] = 0;
4353 }
4354 }
4355 drive_type = GetDriveTypeFromPath (utf8_root_path_name);
4356 g_free (utf8_root_path_name);
4357
4358 return (drive_type);
4359 }
4360
4361 #if defined (PLATFORM_MACOSX) || defined (__linux__) || defined(PLATFORM_BSD) || defined(__native_client__) || defined(__FreeBSD_kernel__)
4362 static gchar*
4363 get_fstypename (gchar *utfpath)
4364 {
4365 #if defined (PLATFORM_MACOSX) || defined (__linux__)
4366 struct statfs stat;
4367 #if __linux__
4368 _wapi_drive_type *current;
4369 #endif
4370 if (statfs (utfpath, &stat) == -1)
4371 return NULL;
4372 #if PLATFORM_MACOSX
4373 return g_strdup (stat.f_fstypename);
4374 #else
4375 current = &_wapi_drive_types[0];
4376 while (current->drive_type != DRIVE_UNKNOWN) {
4377 if (stat.f_type == current->fstypeid)
4378 return g_strdup (current->fstype);
4379 current++;
4380 }
4381 return NULL;
4382 #endif
4383 #else
4384 return NULL;
4385 #endif
4386 }
4387
4388 /* Linux has struct statfs which has a different layout */
4389 gboolean
4390 GetVolumeInformation (const gunichar2 *path, gunichar2 *volumename, int volumesize, int *outserial, int *maxcomp, int *fsflags, gunichar2 *fsbuffer, int fsbuffersize)
4391 {
4392 gchar *utfpath;
4393 gchar *fstypename;
4394 gboolean status = FALSE;
4395 glong len;
4396
4397 // We only support getting the file system type
4398 if (fsbuffer == NULL)
4399 return 0;
4400
4401 utfpath = mono_unicode_to_external (path);
4402 if ((fstypename = get_fstypename (utfpath)) != NULL){
4403 gunichar2 *ret = g_utf8_to_utf16 (fstypename, -1, NULL, &len, NULL);
4404 if (ret != NULL && len < fsbuffersize){
4405 memcpy (fsbuffer, ret, len * sizeof (gunichar2));
4406 fsbuffer [len] = 0;
4407 status = TRUE;
4408 }
4409 if (ret != NULL)
4410 g_free (ret);
4411 g_free (fstypename);
4412 }
4413 g_free (utfpath);
4414 return status;
4415 }
4416 #endif
4417
4418 void
4419 _wapi_io_init (void)
4420 {
4421 mono_os_mutex_init (&stdhandle_mutex);
4422 mono_os_mutex_init (&file_share_mutex);
4423
4424 mono_w32handle_register_ops (MONO_W32HANDLE_FILE, &_wapi_file_ops);
4425 mono_w32handle_register_ops (MONO_W32HANDLE_CONSOLE, &_wapi_console_ops);
4426 mono_w32handle_register_ops (MONO_W32HANDLE_FIND, &_wapi_find_ops);
4427 mono_w32handle_register_ops (MONO_W32HANDLE_PIPE, &_wapi_pipe_ops);
4428
4429 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_FILE, */
4430 /* MONO_W32HANDLE_CAP_WAIT); */
4431 /* mono_w32handle_register_capabilities (MONO_W32HANDLE_CONSOLE, */
4432 /* MONO_W32HANDLE_CAP_WAIT); */
4433
4434 if (g_getenv ("MONO_STRICT_IO_EMULATION"))
4435 lock_while_writing = TRUE;
4436 }
4437
4438 void
4439 _wapi_io_cleanup (void)
4440 {
4441 mono_os_mutex_destroy (&file_share_mutex);
4442
4443 if (file_share_hash)
4444 g_hash_table_destroy (file_share_hash);
4445 }
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