mono/metadata/file-io.c

   1 /*
   2  * file-io.c: File IO internal calls
   3  *
   4  * Author:
   5  *      Dick Porter (dick@ximian.com)
   6  *      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7  *
   8  * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
   9  * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
  10  * Copyright 2012 Xamarin Inc (http://www.xamarin.com)
  11  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  12  */
  13
  14 #include <config.h>
  15
  16 #include <glib.h>
  17 #include <string.h>
  18 #include <errno.h>
  19 #ifdef HAVE_UNISTD_H
  20 #include <unistd.h>
  21 #endif
  22 #ifdef HAVE_SYS_STAT_H
  23 #include <sys/stat.h>
  24 #endif
  25 #ifdef HAVE_SYS_TYPES_H
  26 #include <sys/types.h>
  27 #endif
  28
  29 #include <mono/metadata/object.h>
  30 #include <mono/io-layer/io-layer.h>
  31 #include <mono/metadata/file-io.h>
  32 #include <mono/metadata/exception.h>
  33 #include <mono/metadata/appdomain.h>
  34 #include <mono/metadata/marshal.h>
  35 #include <mono/utils/strenc.h>
  36 #include <utils/mono-io-portability.h>
  37 #include <mono/utils/w32handle.h>
  38
  39 #undef DEBUG
  40
  41 /* conversion functions */
  42
  43 static guint32 convert_mode(MonoFileMode mono_mode)
  44 {
  45         guint32 mode;
  46
  47         switch(mono_mode) {
  48         case FileMode_CreateNew:
  49                 mode=CREATE_NEW;
  50                 break;
  51         case FileMode_Create:
  52                 mode=CREATE_ALWAYS;
  53                 break;
  54         case FileMode_Open:
  55                 mode=OPEN_EXISTING;
  56                 break;
  57         case FileMode_OpenOrCreate:
  58                 mode=OPEN_ALWAYS;
  59                 break;
  60         case FileMode_Truncate:
  61                 mode=TRUNCATE_EXISTING;
  62                 break;
  63         case FileMode_Append:
  64                 mode=OPEN_ALWAYS;
  65                 break;
  66         default:
  67                 g_warning("System.IO.FileMode has unknown value 0x%x",
  68                           mono_mode);
  69                 /* Safe fallback */
  70                 mode=OPEN_EXISTING;
  71         }
  72
  73         return(mode);
  74 }
  75
  76 static guint32 convert_access(MonoFileAccess mono_access)
  77 {
  78         guint32 access;
  79
  80         switch(mono_access) {
  81         case FileAccess_Read:
  82                 access=GENERIC_READ;
  83                 break;
  84         case FileAccess_Write:
  85                 access=GENERIC_WRITE;
  86                 break;
  87         case FileAccess_ReadWrite:
  88                 access=GENERIC_READ|GENERIC_WRITE;
  89                 break;
  90         default:
  91                 g_warning("System.IO.FileAccess has unknown value 0x%x",
  92                           mono_access);
  93                 /* Safe fallback */
  94                 access=GENERIC_READ;
  95         }
  96
  97         return(access);
  98 }
  99
 100 static guint32 convert_share(MonoFileShare mono_share)
 101 {
 102         guint32 share = 0;
 103
 104         if (mono_share & FileShare_Read) {
 105                 share |= FILE_SHARE_READ;
 106         }
 107         if (mono_share & FileShare_Write) {
 108                 share |= FILE_SHARE_WRITE;
 109         }
 110         if (mono_share & FileShare_Delete) {
 111                 share |= FILE_SHARE_DELETE;
 112         }
 113
 114         if (mono_share & ~(FileShare_Read|FileShare_Write|FileShare_Delete)) {
 115                 g_warning("System.IO.FileShare has unknown value 0x%x",
 116                           mono_share);
 117                 /* Safe fallback */
 118                 share=0;
 119         }
 120
 121         return(share);
 122 }
 123
 124 #if 0
 125 static guint32 convert_stdhandle(guint32 fd)
 126 {
 127         guint32 stdhandle;
 128
 129         switch(fd) {
 130         case 0:
 131                 stdhandle=STD_INPUT_HANDLE;
 132                 break;
 133         case 1:
 134                 stdhandle=STD_OUTPUT_HANDLE;
 135                 break;
 136         case 2:
 137                 stdhandle=STD_ERROR_HANDLE;
 138                 break;
 139         default:
 140                 g_warning("unknown standard file descriptor %d", fd);
 141                 stdhandle=STD_INPUT_HANDLE;
 142         }
 143
 144         return(stdhandle);
 145 }
 146 #endif
 147
 148 static guint32 convert_seekorigin(MonoSeekOrigin origin)
 149 {
 150         guint32 w32origin;
 151
 152         switch(origin) {
 153         case SeekOrigin_Begin:
 154                 w32origin=FILE_BEGIN;
 155                 break;
 156         case SeekOrigin_Current:
 157                 w32origin=FILE_CURRENT;
 158                 break;
 159         case SeekOrigin_End:
 160                 w32origin=FILE_END;
 161                 break;
 162         default:
 163                 g_warning("System.IO.SeekOrigin has unknown value 0x%x",
 164                           origin);
 165                 /* Safe fallback */
 166                 w32origin=FILE_CURRENT;
 167         }
 168
 169         return(w32origin);
 170 }
 171
 172 static gint64 convert_filetime (const FILETIME *filetime)
 173 {
 174         guint64 ticks = filetime->dwHighDateTime;
 175         ticks <<= 32;
 176         ticks += filetime->dwLowDateTime;
 177         return (gint64)ticks;
 178 }
 179
 180 static void convert_win32_file_attribute_data (const WIN32_FILE_ATTRIBUTE_DATA *data, MonoIOStat *stat)
 181 {
 182         stat->attributes = data->dwFileAttributes;
 183         stat->creation_time = convert_filetime (&data->ftCreationTime);
 184         stat->last_access_time = convert_filetime (&data->ftLastAccessTime);
 185         stat->last_write_time = convert_filetime (&data->ftLastWriteTime);
 186         stat->length = ((gint64)data->nFileSizeHigh << 32) | data->nFileSizeLow;
 187 }
 188
 189 /* Managed file attributes have nearly but not quite the same values
 190  * as the w32 equivalents.
 191  */
 192 static guint32 convert_attrs(MonoFileAttributes attrs)
 193 {
 194         if(attrs & FileAttributes_Encrypted) {
 195                 attrs = (MonoFileAttributes)(attrs | FILE_ATTRIBUTE_ENCRYPTED);
 196         }
 197
 198         return(attrs);
 199 }
 200
 201 /*
 202  * On Win32, GetFileAttributes|Ex () seems to try opening the file,
 203  * which might lead to sharing violation errors, whereas FindFirstFile
 204  * always succeeds. These 2 wrappers resort to FindFirstFile if
 205  * GetFileAttributes|Ex () has failed.
 206  */
 207 static guint32
 208 get_file_attributes (const gunichar2 *path)
 209 {
 210         guint32 res;
 211         WIN32_FIND_DATA find_data;
 212         HANDLE find_handle;
 213         gint32 error;
 214
 215         res = GetFileAttributes (path);
 216         if (res != -1)
 217                 return res;
 218
 219         error = GetLastError ();
 220
 221         if (error != ERROR_SHARING_VIOLATION)
 222                 return res;
 223
 224         find_handle = FindFirstFile (path, &find_data);
 225
 226         if (find_handle == INVALID_HANDLE_VALUE)
 227                 return res;
 228
 229         FindClose (find_handle);
 230
 231         return find_data.dwFileAttributes;
 232 }
 233
 234 static gboolean
 235 get_file_attributes_ex (const gunichar2 *path, WIN32_FILE_ATTRIBUTE_DATA *data)
 236 {
 237         gboolean res;
 238         WIN32_FIND_DATA find_data;
 239         HANDLE find_handle;
 240         gint32 error;
 241
 242         res = GetFileAttributesEx (path, GetFileExInfoStandard, data);
 243         if (res)
 244                 return TRUE;
 245
 246         error = GetLastError ();
 247
 248         if (error != ERROR_SHARING_VIOLATION)
 249                 return FALSE;
 250
 251         find_handle = FindFirstFile (path, &find_data);
 252
 253         if (find_handle == INVALID_HANDLE_VALUE)
 254                 return FALSE;
 255
 256         FindClose (find_handle);
 257
 258         data->dwFileAttributes = find_data.dwFileAttributes;
 259         data->ftCreationTime = find_data.ftCreationTime;
 260         data->ftLastAccessTime = find_data.ftLastAccessTime;
 261         data->ftLastWriteTime = find_data.ftLastWriteTime;
 262         data->nFileSizeHigh = find_data.nFileSizeHigh;
 263         data->nFileSizeLow = find_data.nFileSizeLow;
 264
 265         return TRUE;
 266 }
 267
 268 /* System.IO.MonoIO internal calls */
 269
 270 MonoBoolean
 271 ves_icall_System_IO_MonoIO_CreateDirectory (MonoString *path, gint32 *error)
 272 {
 273         gboolean ret;
 274         MONO_ENTER_GC_SAFE;
 275
 276         *error=ERROR_SUCCESS;
 277
 278         ret=CreateDirectory (mono_string_chars (path), NULL);
 279         if(ret==FALSE) {
 280                 *error=GetLastError ();
 281         }
 282
 283         MONO_EXIT_GC_SAFE;
 284         return(ret);
 285 }
 286
 287 MonoBoolean
 288 ves_icall_System_IO_MonoIO_RemoveDirectory (MonoString *path, gint32 *error)
 289 {
 290         gboolean ret;
 291         MONO_ENTER_GC_SAFE;
 292
 293         *error=ERROR_SUCCESS;
 294
 295         ret=RemoveDirectory (mono_string_chars (path));
 296         if(ret==FALSE) {
 297                 *error=GetLastError ();
 298         }
 299
 300         MONO_EXIT_GC_SAFE;
 301         return(ret);
 302 }
 303
 304 static gchar *
 305 get_search_dir (const gunichar2 *pattern)
 306 {
 307         gchar *p;
 308         gchar *result;
 309
 310         p = g_utf16_to_utf8 (pattern, -1, NULL, NULL, NULL);
 311         result = g_path_get_dirname (p);
 312         g_free (p);
 313         return result;
 314 }
 315
 316 static GPtrArray *
 317 get_filesystem_entries (const gunichar2 *path,
 318                                                  const gunichar2 *path_with_pattern,
 319                                                  gint attrs, gint mask,
 320                                                  gint32 *error)
 321 {
 322         int i;
 323         WIN32_FIND_DATA data;
 324         HANDLE find_handle;
 325         GPtrArray *names = NULL;
 326         gchar *utf8_path = NULL, *utf8_result, *full_name;
 327         gint32 attributes;
 328
 329         mask = convert_attrs ((MonoFileAttributes)mask);
 330         attributes = get_file_attributes (path);
 331         if (attributes != -1) {
 332                 if ((attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) {
 333                         *error = ERROR_INVALID_NAME;
 334                         goto fail;
 335                 }
 336         } else {
 337                 *error = GetLastError ();
 338                 goto fail;
 339         }
 340
 341         find_handle = FindFirstFile (path_with_pattern, &data);
 342         if (find_handle == INVALID_HANDLE_VALUE) {
 343                 gint32 find_error = GetLastError ();
 344
 345                 if (find_error == ERROR_FILE_NOT_FOUND || find_error == ERROR_NO_MORE_FILES) {
 346                         /* No files, so just return an empty array */
 347                         goto fail;
 348                 }
 349
 350                 *error = find_error;
 351                 goto fail;
 352         }
 353
 354         utf8_path = get_search_dir (path_with_pattern);
 355         names = g_ptr_array_new ();
 356
 357         do {
 358                 if ((data.cFileName[0] == '.' && data.cFileName[1] == 0) ||
 359                     (data.cFileName[0] == '.' && data.cFileName[1] == '.' && data.cFileName[2] == 0)) {
 360                         continue;
 361                 }
 362
 363                 if ((data.dwFileAttributes & mask) == attrs) {
 364                         utf8_result = g_utf16_to_utf8 (data.cFileName, -1, NULL, NULL, NULL);
 365                         if (utf8_result == NULL) {
 366                                 continue;
 367                         }
 368
 369                         full_name = g_build_filename (utf8_path, utf8_result, NULL);
 370                         g_ptr_array_add (names, full_name);
 371
 372                         g_free (utf8_result);
 373                 }
 374         } while(FindNextFile (find_handle, &data));
 375
 376         if (FindClose (find_handle) == FALSE) {
 377                 *error = GetLastError ();
 378                 goto fail;
 379         }
 380
 381         g_free (utf8_path);
 382         return names;
 383 fail:
 384         if (names) {
 385                 for (i = 0; i < names->len; i++)
 386                         g_free (g_ptr_array_index (names, i));
 387                 g_ptr_array_free (names, TRUE);
 388         }
 389         g_free (utf8_path);
 390         return FALSE;
 391 }
 392
 393
 394 MonoArray *
 395 ves_icall_System_IO_MonoIO_GetFileSystemEntries (MonoString *path,
 396                                                  MonoString *path_with_pattern,
 397                                                  gint attrs, gint mask,
 398                                                  gint32 *ioerror)
 399 {
 400         MonoError error;
 401         MonoDomain *domain = mono_domain_get ();
 402         MonoArray *result;
 403         int i;
 404         GPtrArray *names;
 405
 406         *ioerror = ERROR_SUCCESS;
 407
 408         MONO_ENTER_GC_SAFE;
 409         names = get_filesystem_entries (mono_string_chars (path), mono_string_chars (path_with_pattern), attrs, mask, ioerror);
 410         MONO_EXIT_GC_SAFE;
 411
 412         if (!names) {
 413                 // If there's no array and no error, then return an empty array.
 414                 if (*ioerror == ERROR_SUCCESS) {
 415                         MonoArray *arr = mono_array_new_checked (domain, mono_defaults.string_class, 0, &error);
 416                         mono_error_set_pending_exception (&error);
 417                         return arr;
 418                 }
 419                 return NULL;
 420         }
 421
 422         result = mono_array_new_checked (domain, mono_defaults.string_class, names->len, &error);
 423         if (mono_error_set_pending_exception (&error))
 424                 goto leave;
 425         for (i = 0; i < names->len; i++) {
 426                 mono_array_setref (result, i, mono_string_new (domain, (const char *)g_ptr_array_index (names, i)));
 427                 g_free (g_ptr_array_index (names, i));
 428         }
 429 leave:
 430         g_ptr_array_free (names, TRUE);
 431         return result;
 432 }
 433
 434 typedef struct {
 435         MonoDomain *domain;
 436         gchar *utf8_path;
 437         HANDLE find_handle;
 438 } IncrementalFind;
 439
 440 static gboolean
 441 incremental_find_check_match (IncrementalFind *handle, WIN32_FIND_DATA *data, MonoString **result)
 442 {
 443         gchar *utf8_result;
 444         gchar *full_name;
 445
 446         if ((data->cFileName[0] == '.' && data->cFileName[1] == 0) || (data->cFileName[0] == '.' && data->cFileName[1] == '.' && data->cFileName[2] == 0))
 447                 return FALSE;
 448
 449         utf8_result = g_utf16_to_utf8 (data->cFileName, -1, NULL, NULL, NULL);
 450         if (utf8_result == NULL)
 451                 return FALSE;
 452
 453         full_name = g_build_filename (handle->utf8_path, utf8_result, NULL);
 454         g_free (utf8_result);
 455         *result = mono_string_new (mono_domain_get (), full_name);
 456         g_free (full_name);
 457
 458         return TRUE;
 459 }
 460
 461 /* FIXME make gc suspendable */
 462 MonoString *
 463 ves_icall_System_IO_MonoIO_FindFirst (MonoString *path,
 464                                       MonoString *path_with_pattern,
 465                                       gint32 *result_attr, gint32 *ioerror,
 466                                       gpointer *handle)
 467 {
 468         MonoError error;
 469         WIN32_FIND_DATA data;
 470         HANDLE find_handle;
 471         IncrementalFind *ifh;
 472         MonoString *result;
 473
 474         *ioerror = ERROR_SUCCESS;
 475
 476         find_handle = FindFirstFile (mono_string_chars (path_with_pattern), &data);
 477
 478         if (find_handle == INVALID_HANDLE_VALUE) {
 479                 gint32 find_error = GetLastError ();
 480                 *handle = NULL;
 481
 482                 if (find_error == ERROR_FILE_NOT_FOUND)
 483                         return NULL;
 484
 485                 *ioerror = find_error;
 486                 return NULL;
 487         }
 488
 489         ifh = g_new (IncrementalFind, 1);
 490         ifh->find_handle = find_handle;
 491         ifh->utf8_path = mono_string_to_utf8_checked (path, &error);
 492         if (mono_error_set_pending_exception (&error)) {
 493                 MONO_ENTER_GC_SAFE;
 494                 FindClose (find_handle);
 495                 MONO_EXIT_GC_SAFE;
 496                 g_free (ifh);
 497                 return NULL;
 498         }
 499         ifh->domain = mono_domain_get ();
 500         *handle = ifh;
 501
 502         while (incremental_find_check_match (ifh, &data, &result) == 0){
 503                 if (FindNextFile (find_handle, &data) == FALSE){
 504                         int e = GetLastError ();
 505                         if (e != ERROR_NO_MORE_FILES)
 506                                 *ioerror = e;
 507                         return NULL;
 508                 }
 509         }
 510         *result_attr = data.dwFileAttributes;
 511
 512         return result;
 513 }
 514
 515 /* FIXME make gc suspendable */
 516 MonoString *
 517 ves_icall_System_IO_MonoIO_FindNext (gpointer handle, gint32 *result_attr, gint32 *error)
 518 {
 519         IncrementalFind *ifh = (IncrementalFind *)handle;
 520         WIN32_FIND_DATA data;
 521         MonoString *result;
 522
 523         *error = ERROR_SUCCESS;
 524         do {
 525                 if (FindNextFile (ifh->find_handle, &data) == FALSE){
 526                         int e = GetLastError ();
 527                         if (e != ERROR_NO_MORE_FILES)
 528                                 *error = e;
 529                         return NULL;
 530                 }
 531         } while (incremental_find_check_match (ifh, &data, &result) == 0);
 532
 533         *result_attr = data.dwFileAttributes;
 534         return result;
 535 }
 536
 537 int
 538 ves_icall_System_IO_MonoIO_FindClose (gpointer handle)
 539 {
 540         IncrementalFind *ifh = (IncrementalFind *)handle;
 541         gint32 error;
 542
 543         MONO_ENTER_GC_SAFE;
 544         if (FindClose (ifh->find_handle) == FALSE){
 545                 error = GetLastError ();
 546         } else
 547                 error = ERROR_SUCCESS;
 548         g_free (ifh->utf8_path);
 549         g_free (ifh);
 550         MONO_EXIT_GC_SAFE;
 551
 552         return error;
 553 }
 554
 555 MonoString *
 556 ves_icall_System_IO_MonoIO_GetCurrentDirectory (gint32 *io_error)
 557 {
 558         MonoError error;
 559         MonoString *result;
 560         gunichar2 *buf;
 561         int len, res_len;
 562
 563         len = MAX_PATH + 1; /*FIXME this is too smal under most unix systems.*/
 564         buf = g_new (gunichar2, len);
 565
 566         mono_error_init (&error);
 567         *io_error=ERROR_SUCCESS;
 568         result = NULL;
 569
 570         res_len = GetCurrentDirectory (len, buf);
 571         if (res_len > len) { /*buf is too small.*/
 572                 int old_res_len = res_len;
 573                 g_free (buf);
 574                 buf = g_new (gunichar2, res_len);
 575                 res_len = GetCurrentDirectory (res_len, buf) == old_res_len;
 576         }
 577
 578         if (res_len) {
 579                 len = 0;
 580                 while (buf [len])
 581                         ++ len;
 582
 583                 result = mono_string_new_utf16_checked (mono_domain_get (), buf, len, &error);
 584         } else {
 585                 *io_error=GetLastError ();
 586         }
 587
 588         g_free (buf);
 589         mono_error_set_pending_exception (&error);
 590         return result;
 591 }
 592
 593 MonoBoolean
 594 ves_icall_System_IO_MonoIO_SetCurrentDirectory (MonoString *path,
 595                                                 gint32 *error)
 596 {
 597         gboolean ret;
 598
 599         *error=ERROR_SUCCESS;
 600
 601         ret=SetCurrentDirectory (mono_string_chars (path));
 602         if(ret==FALSE) {
 603                 *error=GetLastError ();
 604         }
 605
 606         return(ret);
 607 }
 608
 609 MonoBoolean
 610 ves_icall_System_IO_MonoIO_MoveFile (MonoString *path, MonoString *dest,
 611                                      gint32 *error)
 612 {
 613         gboolean ret;
 614         MONO_ENTER_GC_SAFE;
 615
 616         *error=ERROR_SUCCESS;
 617
 618         ret=MoveFile (mono_string_chars (path), mono_string_chars (dest));
 619         if(ret==FALSE) {
 620                 *error=GetLastError ();
 621         }
 622
 623         MONO_EXIT_GC_SAFE;
 624         return(ret);
 625 }
 626
 627 MonoBoolean
 628 ves_icall_System_IO_MonoIO_ReplaceFile (MonoString *sourceFileName, MonoString *destinationFileName,
 629                                         MonoString *destinationBackupFileName, MonoBoolean ignoreMetadataErrors,
 630                                         gint32 *error)
 631 {
 632         gboolean ret;
 633         gunichar2 *utf16_sourceFileName = NULL, *utf16_destinationFileName = NULL, *utf16_destinationBackupFileName = NULL;
 634         guint32 replaceFlags = REPLACEFILE_WRITE_THROUGH;
 635         MONO_ENTER_GC_SAFE;
 636
 637         if (sourceFileName)
 638                 utf16_sourceFileName = mono_string_chars (sourceFileName);
 639         if (destinationFileName)
 640                 utf16_destinationFileName = mono_string_chars (destinationFileName);
 641         if (destinationBackupFileName)
 642                 utf16_destinationBackupFileName = mono_string_chars (destinationBackupFileName);
 643
 644         *error = ERROR_SUCCESS;
 645         if (ignoreMetadataErrors)
 646                 replaceFlags |= REPLACEFILE_IGNORE_MERGE_ERRORS;
 647
 648         /* FIXME: source and destination file names must not be NULL, but apparently they might be! */
 649         ret = ReplaceFile (utf16_destinationFileName, utf16_sourceFileName, utf16_destinationBackupFileName,
 650                          replaceFlags, NULL, NULL);
 651         if (ret == FALSE)
 652                 *error = GetLastError ();
 653
 654         MONO_EXIT_GC_SAFE;
 655         return ret;
 656 }
 657
 658 MonoBoolean
 659 ves_icall_System_IO_MonoIO_CopyFile (MonoString *path, MonoString *dest,
 660                                      MonoBoolean overwrite, gint32 *error)
 661 {
 662         gboolean ret;
 663         MONO_ENTER_GC_SAFE;
 664
 665         *error=ERROR_SUCCESS;
 666
 667         ret=CopyFile (mono_string_chars (path), mono_string_chars (dest), !overwrite);
 668         if(ret==FALSE) {
 669                 *error=GetLastError ();
 670         }
 671
 672         MONO_EXIT_GC_SAFE;
 673         return(ret);
 674 }
 675
 676 MonoBoolean
 677 ves_icall_System_IO_MonoIO_DeleteFile (MonoString *path, gint32 *error)
 678 {
 679         gboolean ret;
 680         MONO_ENTER_GC_SAFE;
 681
 682         *error=ERROR_SUCCESS;
 683
 684         ret=DeleteFile (mono_string_chars (path));
 685         if(ret==FALSE) {
 686                 *error=GetLastError ();
 687         }
 688
 689         MONO_EXIT_GC_SAFE;
 690         return(ret);
 691 }
 692
 693 gint32
 694 ves_icall_System_IO_MonoIO_GetFileAttributes (MonoString *path, gint32 *error)
 695 {
 696         gint32 ret;
 697         MONO_ENTER_GC_SAFE;
 698
 699         *error=ERROR_SUCCESS;
 700
 701         ret=get_file_attributes (mono_string_chars (path));
 702
 703         /*
 704          * The definition of INVALID_FILE_ATTRIBUTES in the cygwin win32
 705          * headers is wrong, hence this temporary workaround.
 706          * See
 707          * http://cygwin.com/ml/cygwin/2003-09/msg01771.html
 708          */
 709         if (ret==-1) {
 710           /* if(ret==INVALID_FILE_ATTRIBUTES) { */
 711                 *error=GetLastError ();
 712         }
 713
 714         MONO_EXIT_GC_SAFE;
 715         return(ret);
 716 }
 717
 718 MonoBoolean
 719 ves_icall_System_IO_MonoIO_SetFileAttributes (MonoString *path, gint32 attrs,
 720                                               gint32 *error)
 721 {
 722         gboolean ret;
 723         MONO_ENTER_GC_SAFE;
 724
 725         *error=ERROR_SUCCESS;
 726
 727         ret=SetFileAttributes (mono_string_chars (path),
 728                 convert_attrs ((MonoFileAttributes)attrs));
 729         if(ret==FALSE) {
 730                 *error=GetLastError ();
 731         }
 732
 733         MONO_EXIT_GC_SAFE;
 734         return(ret);
 735 }
 736
 737 gint32
 738 ves_icall_System_IO_MonoIO_GetFileType (HANDLE handle, gint32 *error)
 739 {
 740         gboolean ret;
 741         MONO_ENTER_GC_SAFE;
 742
 743         *error=ERROR_SUCCESS;
 744
 745         ret=GetFileType (handle);
 746         if(ret==FILE_TYPE_UNKNOWN) {
 747                 /* Not necessarily an error, but the caller will have
 748                  * to decide based on the error value.
 749                  */
 750                 *error=GetLastError ();
 751         }
 752
 753         MONO_EXIT_GC_SAFE;
 754         return(ret);
 755 }
 756
 757 MonoBoolean
 758 ves_icall_System_IO_MonoIO_GetFileStat (MonoString *path, MonoIOStat *stat,
 759                                         gint32 *error)
 760 {
 761         gboolean result;
 762         WIN32_FILE_ATTRIBUTE_DATA data;
 763         MONO_ENTER_GC_SAFE;
 764
 765         *error=ERROR_SUCCESS;
 766
 767         result = get_file_attributes_ex (mono_string_chars (path), &data);
 768
 769         if (result) {
 770                 convert_win32_file_attribute_data (&data, stat);
 771         } else {
 772                 *error=GetLastError ();
 773                 memset (stat, 0, sizeof (MonoIOStat));
 774         }
 775
 776         MONO_EXIT_GC_SAFE;
 777         return result;
 778 }
 779
 780 HANDLE
 781 ves_icall_System_IO_MonoIO_Open (MonoString *filename, gint32 mode,
 782                                  gint32 access_mode, gint32 share, gint32 options,
 783                                  gint32 *error)
 784 {
 785         HANDLE ret;
 786         int attributes, attrs;
 787         gunichar2 *chars;
 788         MONO_ENTER_GC_SAFE;
 789
 790         chars = mono_string_chars (filename);
 791         *error=ERROR_SUCCESS;
 792
 793         if (options != 0){
 794                 if (options & FileOptions_Encrypted)
 795                         attributes = FILE_ATTRIBUTE_ENCRYPTED;
 796                 else
 797                         attributes = FILE_ATTRIBUTE_NORMAL;
 798                 if (options & FileOptions_DeleteOnClose)
 799                         attributes |= FILE_FLAG_DELETE_ON_CLOSE;
 800                 if (options & FileOptions_SequentialScan)
 801                         attributes |= FILE_FLAG_SEQUENTIAL_SCAN;
 802                 if (options & FileOptions_RandomAccess)
 803                         attributes |= FILE_FLAG_RANDOM_ACCESS;
 804
 805                 if (options & FileOptions_Temporary)
 806                         attributes |= FILE_ATTRIBUTE_TEMPORARY;
 807
 808                 if (options & FileOptions_WriteThrough)
 809                         attributes |= FILE_FLAG_WRITE_THROUGH;
 810         } else
 811                 attributes = FILE_ATTRIBUTE_NORMAL;
 812
 813         /* If we're opening a directory we need to set the extra flag
 814          */
 815         attrs = get_file_attributes (chars);
 816         if (attrs != INVALID_FILE_ATTRIBUTES) {
 817                 if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
 818                         attributes |= FILE_FLAG_BACKUP_SEMANTICS;
 819                 }
 820         }
 821
 822         ret=CreateFile (chars, convert_access ((MonoFileAccess)access_mode),
 823                         convert_share ((MonoFileShare)share), NULL, convert_mode ((MonoFileMode)mode),
 824                         attributes, NULL);
 825         if(ret==INVALID_HANDLE_VALUE) {
 826                 *error=GetLastError ();
 827         }
 828
 829         MONO_EXIT_GC_SAFE;
 830         return(ret);
 831 }
 832
 833 MonoBoolean
 834 ves_icall_System_IO_MonoIO_Close (HANDLE handle, gint32 *error)
 835 {
 836         gboolean ret;
 837         MONO_ENTER_GC_SAFE;
 838
 839         *error=ERROR_SUCCESS;
 840
 841         ret=CloseHandle (handle);
 842         if(ret==FALSE) {
 843                 *error=GetLastError ();
 844         }
 845
 846         MONO_EXIT_GC_SAFE;
 847         return(ret);
 848 }
 849
 850 gint32
 851 ves_icall_System_IO_MonoIO_Read (HANDLE handle, MonoArray *dest,
 852                                  gint32 dest_offset, gint32 count,
 853                                  gint32 *error)
 854 {
 855         guchar *buffer;
 856         gboolean result;
 857         guint32 n;
 858
 859         *error=ERROR_SUCCESS;
 860
 861         MONO_CHECK_ARG_NULL (dest, 0);
 862
 863         if (dest_offset > mono_array_length (dest) - count) {
 864                 mono_set_pending_exception (mono_get_exception_argument ("array", "array too small. numBytes/offset wrong."));
 865                 return 0;
 866         }
 867
 868         buffer = mono_array_addr (dest, guchar, dest_offset);
 869
 870         MONO_ENTER_GC_SAFE;
 871         result = ReadFile (handle, buffer, count, &n, NULL);
 872         MONO_EXIT_GC_SAFE;
 873
 874         if (!result) {
 875                 *error=GetLastError ();
 876                 return -1;
 877         }
 878
 879         return (gint32)n;
 880 }
 881
 882 gint32
 883 ves_icall_System_IO_MonoIO_Write (HANDLE handle, MonoArray *src,
 884                                   gint32 src_offset, gint32 count,
 885                                   gint32 *error)
 886 {
 887         guchar *buffer;
 888         gboolean result;
 889         guint32 n;
 890
 891         *error=ERROR_SUCCESS;
 892
 893         MONO_CHECK_ARG_NULL (src, 0);
 894
 895         if (src_offset > mono_array_length (src) - count) {
 896                 mono_set_pending_exception (mono_get_exception_argument ("array", "array too small. numBytes/offset wrong."));
 897                 return 0;
 898         }
 899
 900         buffer = mono_array_addr (src, guchar, src_offset);
 901         MONO_ENTER_GC_SAFE;
 902         result = WriteFile (handle, buffer, count, &n, NULL);
 903         MONO_EXIT_GC_SAFE;
 904
 905         if (!result) {
 906                 *error=GetLastError ();
 907                 return -1;
 908         }
 909
 910         return (gint32)n;
 911 }
 912
 913 gint64
 914 ves_icall_System_IO_MonoIO_Seek (HANDLE handle, gint64 offset, gint32 origin,
 915                                  gint32 *error)
 916 {
 917         gint32 offset_hi;
 918         MONO_ENTER_GC_SAFE;
 919
 920         *error=ERROR_SUCCESS;
 921
 922         offset_hi = offset >> 32;
 923         offset = SetFilePointer (handle, (gint32) (offset & 0xFFFFFFFF), &offset_hi,
 924                                  convert_seekorigin ((MonoSeekOrigin)origin));
 925
 926         if(offset==INVALID_SET_FILE_POINTER) {
 927                 *error=GetLastError ();
 928         }
 929
 930         MONO_EXIT_GC_SAFE;
 931         return offset | ((gint64)offset_hi << 32);
 932 }
 933
 934 MonoBoolean
 935 ves_icall_System_IO_MonoIO_Flush (HANDLE handle, gint32 *error)
 936 {
 937         gboolean ret;
 938         MONO_ENTER_GC_SAFE;
 939
 940         *error=ERROR_SUCCESS;
 941
 942         ret=FlushFileBuffers (handle);
 943         if(ret==FALSE) {
 944                 *error=GetLastError ();
 945         }
 946
 947         MONO_EXIT_GC_SAFE;
 948         return(ret);
 949 }
 950
 951 gint64
 952 ves_icall_System_IO_MonoIO_GetLength (HANDLE handle, gint32 *error)
 953 {
 954         gint64 length;
 955         guint32 length_hi;
 956         MONO_ENTER_GC_SAFE;
 957
 958         *error=ERROR_SUCCESS;
 959
 960         length = GetFileSize (handle, &length_hi);
 961         if(length==INVALID_FILE_SIZE) {
 962                 *error=GetLastError ();
 963         }
 964
 965         MONO_EXIT_GC_SAFE;
 966         return length | ((gint64)length_hi << 32);
 967 }
 968
 969 /* FIXME make gc suspendable */
 970 MonoBoolean
 971 ves_icall_System_IO_MonoIO_SetLength (HANDLE handle, gint64 length,
 972                                       gint32 *error)
 973 {
 974         gint64 offset, offset_set;
 975         gint32 offset_hi;
 976         gint32 length_hi;
 977         gboolean result;
 978
 979         *error=ERROR_SUCCESS;
 980
 981         /* save file pointer */
 982
 983         offset_hi = 0;
 984         offset = SetFilePointer (handle, 0, &offset_hi, FILE_CURRENT);
 985         if(offset==INVALID_SET_FILE_POINTER) {
 986                 *error=GetLastError ();
 987                 return(FALSE);
 988         }
 989
 990         /* extend or truncate */
 991
 992         length_hi = length >> 32;
 993         offset_set=SetFilePointer (handle, length & 0xFFFFFFFF, &length_hi,
 994                                    FILE_BEGIN);
 995         if(offset_set==INVALID_SET_FILE_POINTER) {
 996                 *error=GetLastError ();
 997                 return(FALSE);
 998         }
 999
1000         result = SetEndOfFile (handle);
1001         if(result==FALSE) {
1002                 *error=GetLastError ();
1003                 return(FALSE);
1004         }
1005
1006         /* restore file pointer */
1007
1008         offset_set=SetFilePointer (handle, offset & 0xFFFFFFFF, &offset_hi,
1009                                    FILE_BEGIN);
1010         if(offset_set==INVALID_SET_FILE_POINTER) {
1011                 *error=GetLastError ();
1012                 return(FALSE);
1013         }
1014
1015         return result;
1016 }
1017
1018 MonoBoolean
1019 ves_icall_System_IO_MonoIO_SetFileTime (HANDLE handle, gint64 creation_time,
1020                                         gint64 last_access_time,
1021                                         gint64 last_write_time, gint32 *error)
1022 {
1023         gboolean ret;
1024         const FILETIME *creation_filetime;
1025         const FILETIME *last_access_filetime;
1026         const FILETIME *last_write_filetime;
1027         MONO_ENTER_GC_SAFE;
1028
1029         *error=ERROR_SUCCESS;
1030
1031         if (creation_time < 0)
1032                 creation_filetime = NULL;
1033         else
1034                 creation_filetime = (FILETIME *)&creation_time;
1035
1036         if (last_access_time < 0)
1037                 last_access_filetime = NULL;
1038         else
1039                 last_access_filetime = (FILETIME *)&last_access_time;
1040
1041         if (last_write_time < 0)
1042                 last_write_filetime = NULL;
1043         else
1044                 last_write_filetime = (FILETIME *)&last_write_time;
1045
1046         ret=SetFileTime (handle, creation_filetime, last_access_filetime, last_write_filetime);
1047         if(ret==FALSE) {
1048                 *error=GetLastError ();
1049         }
1050
1051         MONO_EXIT_GC_SAFE;
1052         return(ret);
1053 }
1054
1055 HANDLE
1056 ves_icall_System_IO_MonoIO_get_ConsoleOutput ()
1057 {
1058         return GetStdHandle (STD_OUTPUT_HANDLE);
1059 }
1060
1061 HANDLE
1062 ves_icall_System_IO_MonoIO_get_ConsoleInput ()
1063 {
1064         return GetStdHandle (STD_INPUT_HANDLE);
1065 }
1066
1067 HANDLE
1068 ves_icall_System_IO_MonoIO_get_ConsoleError ()
1069 {
1070         return GetStdHandle (STD_ERROR_HANDLE);
1071 }
1072
1073 MonoBoolean
1074 ves_icall_System_IO_MonoIO_CreatePipe (HANDLE *read_handle, HANDLE *write_handle, gint32 *error)
1075 {
1076         SECURITY_ATTRIBUTES attr;
1077         gboolean ret;
1078
1079         attr.nLength=sizeof(SECURITY_ATTRIBUTES);
1080         attr.bInheritHandle=TRUE;
1081         attr.lpSecurityDescriptor=NULL;
1082
1083         MONO_ENTER_GC_SAFE;
1084         ret=CreatePipe (read_handle, write_handle, &attr, 0);
1085         MONO_EXIT_GC_SAFE;
1086
1087         if(ret==FALSE) {
1088                 *error = GetLastError ();
1089                 /* FIXME: throw an exception? */
1090                 return(FALSE);
1091         }
1092
1093         return(TRUE);
1094 }
1095
1096 MonoBoolean
1097 ves_icall_System_IO_MonoIO_DuplicateHandle (HANDLE source_process_handle, HANDLE source_handle,
1098                 HANDLE target_process_handle, HANDLE *target_handle, gint32 access, gint32 inherit, gint32 options, gint32 *error)
1099 {
1100         /* This is only used on Windows */
1101         gboolean ret;
1102
1103         MONO_ENTER_GC_SAFE;
1104         ret=DuplicateHandle (source_process_handle, source_handle, target_process_handle, target_handle, access, inherit, options);
1105         MONO_EXIT_GC_SAFE;
1106
1107         if(ret==FALSE) {
1108                 *error = GetLastError ();
1109                 /* FIXME: throw an exception? */
1110                 return(FALSE);
1111         }
1112
1113         return(TRUE);
1114 }
1115
1116 gunichar2
1117 ves_icall_System_IO_MonoIO_get_VolumeSeparatorChar ()
1118 {
1119 #if defined (TARGET_WIN32)
1120         return (gunichar2) ':'; /* colon */
1121 #else
1122         return (gunichar2) '/'; /* forward slash */
1123 #endif
1124 }
1125
1126 gunichar2
1127 ves_icall_System_IO_MonoIO_get_DirectorySeparatorChar ()
1128 {
1129 #if defined (TARGET_WIN32)
1130         return (gunichar2) '\\';        /* backslash */
1131 #else
1132         return (gunichar2) '/'; /* forward slash */
1133 #endif
1134 }
1135
1136 gunichar2
1137 ves_icall_System_IO_MonoIO_get_AltDirectorySeparatorChar ()
1138 {
1139 #if defined (TARGET_WIN32)
1140         return (gunichar2) '/'; /* forward slash */
1141 #else
1142         if (IS_PORTABILITY_SET)
1143                 return (gunichar2) '\\';        /* backslash */
1144         else
1145                 return (gunichar2) '/'; /* forward slash */
1146 #endif
1147 }
1148
1149 gunichar2
1150 ves_icall_System_IO_MonoIO_get_PathSeparator ()
1151 {
1152 #if defined (TARGET_WIN32)
1153         return (gunichar2) ';'; /* semicolon */
1154 #else
1155         return (gunichar2) ':'; /* colon */
1156 #endif
1157 }
1158
1159 static const gunichar2
1160 invalid_path_chars [] = {
1161 #if defined (TARGET_WIN32)
1162         0x0022,                         /* double quote, which seems allowed in MS.NET but should be rejected */
1163         0x003c,                         /* less than */
1164         0x003e,                         /* greater than */
1165         0x007c,                         /* pipe */
1166         0x0008,
1167         0x0010,
1168         0x0011,
1169         0x0012,
1170         0x0014,
1171         0x0015,
1172         0x0016,
1173         0x0017,
1174         0x0018,
1175         0x0019,
1176 #endif
1177         0x0000                          /* null */
1178 };
1179
1180 MonoArray *
1181 ves_icall_System_IO_MonoIO_get_InvalidPathChars ()
1182 {
1183         MonoError error;
1184         MonoArray *chars;
1185         MonoDomain *domain;
1186         int i, n;
1187
1188         domain = mono_domain_get ();
1189         n = sizeof (invalid_path_chars) / sizeof (gunichar2);
1190         chars = mono_array_new_checked (domain, mono_defaults.char_class, n, &error);
1191         if (mono_error_set_pending_exception (&error))
1192                 return NULL;
1193
1194         for (i = 0; i < n; ++ i)
1195                 mono_array_set (chars, gunichar2, i, invalid_path_chars [i]);
1196
1197         return chars;
1198 }
1199
1200 void ves_icall_System_IO_MonoIO_Lock (HANDLE handle, gint64 position,
1201                                       gint64 length, gint32 *error)
1202 {
1203         gboolean ret;
1204         MONO_ENTER_GC_SAFE;
1205
1206         *error=ERROR_SUCCESS;
1207
1208         ret=LockFile (handle, position & 0xFFFFFFFF, position >> 32,
1209                       length & 0xFFFFFFFF, length >> 32);
1210         if (ret == FALSE) {
1211                 *error = GetLastError ();
1212         }
1213
1214         MONO_EXIT_GC_SAFE;
1215 }
1216
1217 void ves_icall_System_IO_MonoIO_Unlock (HANDLE handle, gint64 position,
1218                                         gint64 length, gint32 *error)
1219 {
1220         gboolean ret;
1221         MONO_ENTER_GC_SAFE;
1222
1223         *error=ERROR_SUCCESS;
1224
1225         ret=UnlockFile (handle, position & 0xFFFFFFFF, position >> 32,
1226                         length & 0xFFFFFFFF, length >> 32);
1227         if (ret == FALSE) {
1228                 *error = GetLastError ();
1229         }
1230
1231         MONO_EXIT_GC_SAFE;
1232 }
1233
1234 //Support for io-layer free mmap'd files.
1235
1236 #if defined (TARGET_IOS) || defined (TARGET_ANDROID)
1237
1238 gint64
1239 mono_filesize_from_path (MonoString *string)
1240 {
1241         MonoError error;
1242         struct stat buf;
1243         gint64 res;
1244         char *path = mono_string_to_utf8_checked (string, &error);
1245         mono_error_raise_exception (&error); /* OK to throw, external only without a good alternative */
1246
1247         MONO_ENTER_GC_SAFE;
1248         if (stat (path, &buf) == -1)
1249                 res = -1;
1250         else
1251                 res = (gint64)buf.st_size;
1252
1253         g_free (path);
1254
1255         MONO_EXIT_GC_SAFE;
1256         return res;
1257 }
1258
1259 gint64
1260 mono_filesize_from_fd (int fd)
1261 {
1262         struct stat buf;
1263         int res;
1264
1265         MONO_ENTER_GC_SAFE;
1266         res = fstat (fd, &buf);
1267         MONO_EXIT_GC_SAFE;
1268
1269         if (res == -1)
1270                 return (gint64)-1;
1271
1272         return (gint64)buf.st_size;
1273 }
1274
1275 #endif
1276
1277 void mono_w32handle_dump (void);
1278
1279 void ves_icall_System_IO_MonoIO_DumpHandles (void)
1280 {
1281 #ifndef HOST_WIN32
1282         mono_w32handle_dump ();
1283 #endif
1284 }