Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

file 1444 lines (1268 sloc) 37.214 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1997-2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
/*
* Purpose: Provides file and directory operations for Windows.
*/

#include <windows.h>
#include "sys.h"
#include <ctype.h>

#include "erl_efile.h"

/*
* Microsoft-specific function to map a WIN32 error code to a Posix errno.
*/

#define ISSLASH(a) ((a) == '\\' || (a) == '/')

#define ISDIR(st) (((st).st_mode&S_IFMT) == S_IFDIR)
#define ISREG(st) (((st).st_mode&S_IFMT) == S_IFREG)

#define IS_DOT_OR_DOTDOT(s) \
(s[0] == '.' && (s[1] == '\0' || (s[1] == '.' && s[2] == '\0')))

#ifndef INVALID_FILE_ATTRIBUTES
#define INVALID_FILE_ATTRIBUTES ((DWORD) 0xFFFFFFFF)
#endif

static int check_error(int result, Efile_error* errInfo);
static int set_error(Efile_error* errInfo);
static int IsRootUNCName(const char* path);
static int extract_root(char* name);
static unsigned short dos_to_posix_mode(int attr, const char *name);

static int errno_map(DWORD last_error) {

    switch (last_error) {
    case ERROR_SUCCESS:
return 0;
    case ERROR_INVALID_FUNCTION:
    case ERROR_INVALID_DATA:
    case ERROR_INVALID_PARAMETER:
    case ERROR_INVALID_TARGET_HANDLE:
    case ERROR_INVALID_CATEGORY:
    case ERROR_NEGATIVE_SEEK:
return EINVAL;
    case ERROR_DIR_NOT_EMPTY:
return EEXIST;
    case ERROR_BAD_FORMAT:
return ENOEXEC;
    case ERROR_PATH_NOT_FOUND:
    case ERROR_FILE_NOT_FOUND:
    case ERROR_NO_MORE_FILES:
return ENOENT;
    case ERROR_TOO_MANY_OPEN_FILES:
return EMFILE;
    case ERROR_ACCESS_DENIED:
    case ERROR_INVALID_ACCESS:
    case ERROR_CURRENT_DIRECTORY:
    case ERROR_SHARING_VIOLATION:
    case ERROR_LOCK_VIOLATION:
    case ERROR_INVALID_PASSWORD:
    case ERROR_DRIVE_LOCKED:
return EACCES;
    case ERROR_INVALID_HANDLE:
return EBADF;
    case ERROR_NOT_ENOUGH_MEMORY:
    case ERROR_OUTOFMEMORY:
    case ERROR_OUT_OF_STRUCTURES:
return ENOMEM;
    case ERROR_INVALID_DRIVE:
    case ERROR_BAD_UNIT:
    case ERROR_NOT_READY:
    case ERROR_REM_NOT_LIST:
    case ERROR_DUP_NAME:
    case ERROR_BAD_NETPATH:
    case ERROR_NETWORK_BUSY:
    case ERROR_DEV_NOT_EXIST:
    case ERROR_BAD_NET_NAME:
return ENXIO;
    case ERROR_NOT_SAME_DEVICE:
return EXDEV;
    case ERROR_WRITE_PROTECT:
return EROFS;
    case ERROR_BAD_LENGTH:
    case ERROR_BUFFER_OVERFLOW:
return E2BIG;
    case ERROR_SEEK:
    case ERROR_SECTOR_NOT_FOUND:
return ESPIPE;
    case ERROR_NOT_DOS_DISK:
return ENODEV;
    case ERROR_GEN_FAILURE:
return ENODEV;
    case ERROR_SHARING_BUFFER_EXCEEDED:
    case ERROR_NO_MORE_SEARCH_HANDLES:
return EMFILE;
    case ERROR_HANDLE_EOF:
    case ERROR_BROKEN_PIPE:
return EPIPE;
    case ERROR_HANDLE_DISK_FULL:
    case ERROR_DISK_FULL:
return ENOSPC;
    case ERROR_NOT_SUPPORTED:
return ENOTSUP;
    case ERROR_FILE_EXISTS:
    case ERROR_ALREADY_EXISTS:
    case ERROR_CANNOT_MAKE:
return EEXIST;
    case ERROR_ALREADY_ASSIGNED:
return EBUSY;
    case ERROR_NO_PROC_SLOTS:
return EAGAIN;
    case ERROR_ARENA_TRASHED:
    case ERROR_INVALID_BLOCK:
    case ERROR_BAD_ENVIRONMENT:
    case ERROR_BAD_COMMAND:
    case ERROR_CRC:
    case ERROR_OUT_OF_PAPER:
    case ERROR_READ_FAULT:
    case ERROR_WRITE_FAULT:
    case ERROR_WRONG_DISK:
    case ERROR_NET_WRITE_FAULT:
return EIO;
    default: /* not to do with files I expect. */
return EIO;
    }
}

static int
check_error(int result, Efile_error* errInfo)
{
    if (result < 0) {
errInfo->posix_errno = errno;
errInfo->os_errno = GetLastError();
return 0;
    }
    return 1;
}

/*
* Fills the provided error information structure with information
* with the error code given by GetLastError() and its corresponding
* Posix error number.
*
* Returns 0.
*/

static int
set_error(Efile_error* errInfo)
{
    errInfo->posix_errno = errno_map(errInfo->os_errno = GetLastError());
    return 0;
}

/*
* A writev with Unix semantics, but with Windows arguments
*/
static int
win_writev(Efile_error* errInfo,
HANDLE fd, /* handle to file */
FILE_SEGMENT_ELEMENT iov[], /* array of buffer pointers */
DWORD *size) /* number of bytes to write */
{
    OVERLAPPED ov;
    ov.Offset = 0L;
    ov.OffsetHigh = 0L;
    ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
    if (ov.hEvent == NULL)
return set_error(errInfo);
    if (! write_file_gather(fd, iov, *size, NULL, &ov))
return set_error(errInfo);
    if (WaitForSingleObject(ov.hEvent, INFINITE) != WAIT_OBJECT_0)
return set_error(errInfo);
    if (! GetOverlappedResult(fd, &ov, size, FALSE))
return set_error(errInfo);
    return 1;
}



int
efile_mkdir(errInfo, name)
Efile_error* errInfo; /* Where to return error codes. */
char* name; /* Name of directory to create. */
{
    return check_error(mkdir(name), errInfo);
}

int
efile_rmdir(errInfo, name)
Efile_error* errInfo; /* Where to return error codes. */
char* name; /* Name of directory to delete. */
{
    OSVERSIONINFO os;
    DWORD attr;

    if (RemoveDirectory(name) != FALSE) {
return 1;
    }
    errno = errno_map(GetLastError());
    if (errno == EACCES) {
attr = GetFileAttributes(name);
if (attr != (DWORD) -1) {
if ((attr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
/*
* Windows 95 reports calling RemoveDirectory on a file as an
* EACCES, not an ENOTDIR.
*/

errno = ENOTDIR;
goto end;
}

/*
* Windows 95 reports removing a non-empty directory as
* an EACCES, not an EEXIST. If the directory is not empty,
* change errno so caller knows what's going on.
*/

os.dwOSVersionInfoSize = sizeof(os);
GetVersionEx(&os);
if (os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
HANDLE handle;
WIN32_FIND_DATA data;
char buffer[2*MAX_PATH];
int len;

len = strlen(name);
strcpy(buffer, name);
if (buffer[0] && buffer[len-1] != '\\' && buffer[len-1] != '/') {
strcat(buffer, "\\");
}
strcat(buffer, "*.*");
handle = FindFirstFile(buffer, &data);
if (handle != INVALID_HANDLE_VALUE) {
while (1) {
if ((strcmp(data.cFileName, ".") != 0)
&& (strcmp(data.cFileName, "..") != 0)) {
/*
* Found something in this directory.
*/

errno = EEXIST;
break;
}
if (FindNextFile(handle, &data) == FALSE) {
break;
}
}
FindClose(handle);
}
}
}
    }

    if (errno == ENOTEMPTY) {
/*
* Posix allows both EEXIST or ENOTEMPTY, but we'll always
* return EEXIST to allow easy matching in Erlang code.
*/

errno = EEXIST;
    }

 end:
    return check_error(-1, errInfo);
}

int
efile_delete_file(errInfo, name)
Efile_error* errInfo; /* Where to return error codes. */
char* name; /* Name of file to delete. */
{
    DWORD attr;

    if (DeleteFile(name) != FALSE) {
return 1;
    }

    errno = errno_map(GetLastError());
    if (errno == EACCES) {
        attr = GetFileAttributes(name);
if (attr != (DWORD) -1) {
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Windows NT reports removing a directory as EACCES instead
* of EPERM.
*/

errno = EPERM;
}
}
    } else if (errno == ENOENT) {
        attr = GetFileAttributes(name);
if (attr != (DWORD) -1) {
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Windows 95 reports removing a directory as ENOENT instead
* of EPERM.
*/

errno = EPERM;
}
}
    } else if (errno == EINVAL) {
/*
* Windows NT reports removing a char device as EINVAL instead of
* EACCES.
*/

errno = EACCES;
    }

    return check_error(-1, errInfo);
}

/*
*---------------------------------------------------------------------------
*
* Changes the name of an existing file or directory, from src to dst.
* If src and dst refer to the same file or directory, does nothing
* and returns success. Otherwise if dst already exists, it will be
* deleted and replaced by src subject to the following conditions:
* If src is a directory, dst may be an empty directory.
* If src is a file, dst may be a file.
* In any other situation where dst already exists, the rename will
* fail.
*
* Some possible error codes:
*
* EACCES: src or dst parent directory can't be read and/or written.
* EEXIST: dst is a non-empty directory.
* EINVAL: src is a root directory or dst is a subdirectory of src.
* EISDIR: dst is a directory, but src is not.
* ENOENT: src doesn't exist, or src or dst is "".
* ENOTDIR: src is a directory, but dst is not.
* EXDEV: src and dst are on different filesystems.
*
* Side effects:
* The implementation of rename may allow cross-filesystem renames,
* but the caller should be prepared to emulate it with copy and
* delete if errno is EXDEV.
*
*---------------------------------------------------------------------------
*/

int
efile_rename(errInfo, src, dst)
Efile_error* errInfo; /* Where to return error codes. */
char* src; /* Original name. */
char* dst; /* New name. */
{
    DWORD srcAttr, dstAttr;
    
    if (MoveFile(src, dst) != FALSE) {
return 1;
    }

    errno = errno_map(GetLastError());
    srcAttr = GetFileAttributes(src);
    dstAttr = GetFileAttributes(dst);
    if (srcAttr == (DWORD) -1) {
srcAttr = 0;
    }
    if (dstAttr == (DWORD) -1) {
dstAttr = 0;
    }

    if (errno == EBADF) {
errno = EACCES;
return check_error(-1, errInfo);
    }
    if (errno == EACCES) {
decode:
if (srcAttr & FILE_ATTRIBUTE_DIRECTORY) {
char srcPath[MAX_PATH], dstPath[MAX_PATH];
char *srcRest, *dstRest;
int size;

size = GetFullPathName(src, sizeof(srcPath), srcPath, &srcRest);
if ((size == 0) || (size > sizeof(srcPath))) {
return check_error(-1, errInfo);
}
size = GetFullPathName(dst, sizeof(dstPath), dstPath, &dstRest);
if ((size == 0) || (size > sizeof(dstPath))) {
return check_error(-1, errInfo);
}
if (srcRest == NULL) {
srcRest = srcPath + strlen(srcPath);
}
if (strnicmp(srcPath, dstPath, srcRest - srcPath) == 0) {
/*
* Trying to move a directory into itself.
*/

errno = EINVAL;
}
if (extract_root(srcPath)) {
/*
* Attempt to move a root directory. Never allowed.
*/
errno = EINVAL;
}

(void) extract_root(dstPath);
if (dstPath[0] == '\0') {
/*
* The filename was invalid. (Don't know why,
* but play it safe.)
*/
errno = EINVAL;
}
if (stricmp(srcPath, dstPath) != 0) {
/*
* If src is a directory and dst filesystem != src
* filesystem, errno should be EXDEV. It is very
* important to get this behavior, so that the caller
* can respond to a cross filesystem rename by
* simulating it with copy and delete. The MoveFile
* system call already handles the case of moving a
* *file* between filesystems.
*/

errno = EXDEV;
}
}

/*
* Other types of access failure is that dst is a read-only
* filesystem, that an open file referred to src or dest, or that
* src or dest specified the current working directory on the
* current filesystem. EACCES is returned for those cases.
*/

    } else if (errno == EEXIST) {
/*
* Reports EEXIST any time the target already exists. If it makes
* sense, remove the old file and try renaming again.
*/

if (srcAttr & FILE_ATTRIBUTE_DIRECTORY) {
if (dstAttr & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Overwrite empty dst directory with src directory. The
* following call will remove an empty directory. If it
* fails, it's because it wasn't empty.
*/

if (RemoveDirectory(dst)) {
/*
* Now that that empty directory is gone, we can try
* renaming again. If that fails, we'll put this empty
* directory back, for completeness.
*/

if (MoveFile(src, dst) != FALSE) {
return 1;
}

/*
* Some new error has occurred. Don't know what it
* could be, but report this one.
*/

errno = errno_map(GetLastError());
CreateDirectory(dst, NULL);
SetFileAttributes(dst, dstAttr);
if (errno == EACCES) {
/*
* Decode the EACCES to a more meaningful error.
*/

goto decode;
}
}
} else { /* (dstAttr & FILE_ATTRIBUTE_DIRECTORY) == 0 */
errno = ENOTDIR;
}
} else { /* (srcAttr & FILE_ATTRIBUTE_DIRECTORY) == 0 */
if (dstAttr & FILE_ATTRIBUTE_DIRECTORY) {
errno = EISDIR;
} else {
/*
* Overwrite existing file by:
*
* 1. Rename existing file to temp name.
* 2. Rename old file to new name.
* 3. If success, delete temp file. If failure,
* put temp file back to old name.
*/

char tempName[MAX_PATH];
int result, size;
char *rest;

size = GetFullPathName(dst, sizeof(tempName), tempName, &rest);
if ((size == 0) || (size > sizeof(tempName)) || (rest == NULL)) {
return check_error(-1, errInfo);
}
*rest = '\0';
result = -1;
if (GetTempFileName(tempName, "erlr", 0, tempName) != 0) {
/*
* Strictly speaking, need the following DeleteFile and
* MoveFile to be joined as an atomic operation so no
* other app comes along in the meantime and creates the
* same temp file.
*/

DeleteFile(tempName);
if (MoveFile(dst, tempName) != FALSE) {
if (MoveFile(src, dst) != FALSE) {
SetFileAttributes(tempName, FILE_ATTRIBUTE_NORMAL);
DeleteFile(tempName);
return 1;
} else {
DeleteFile(dst);
MoveFile(tempName, dst);
}
}

/*
* Can't backup dst file or move src file. Return that
* error. Could happen if an open file refers to dst.
*/

errno = errno_map(GetLastError());
if (errno == EACCES) {
/*
* Decode the EACCES to a more meaningful error.
*/

goto decode;
}
}
return result;
}
}
    }
    return check_error(-1, errInfo);
}

int
efile_chdir(errInfo, name)
Efile_error* errInfo; /* Where to return error codes. */
char* name; /* Name of directory to make current. */
{
    int success = check_error(chdir(name), errInfo);
    if (!success && errInfo->posix_errno == EINVAL)
/* POSIXification of errno */
errInfo->posix_errno = ENOENT;
    return success;
}

int
efile_getdcwd(errInfo, drive, buffer, size)
Efile_error* errInfo; /* Where to return error codes. */
int drive; /* 0 - current, 1 - A, 2 - B etc. */
char* buffer; /* Where to return the current directory. */
size_t size; /* Size of buffer. */
{
    if (_getdcwd(drive, buffer, size) == NULL)
return check_error(-1, errInfo);
    for ( ; *buffer; buffer++)
if (*buffer == '\\')
*buffer = '/';
    return 1;
}

int
efile_readdir(errInfo, name, dir_handle, buffer, size)
Efile_error* errInfo; /* Where to return error codes. */
char* name; /* Name of directory to open. */
EFILE_DIR_HANDLE* dir_handle; /* Directory handle of open directory. */
char* buffer; /* Pointer to buffer for one filename. */
size_t size; /* Size of buffer. */
{
    HANDLE dir; /* Handle to directory. */
    char wildcard[MAX_PATH]; /* Wildcard to search for. */
    WIN32_FIND_DATA findData; /* Data found by FindFirstFile() or FindNext(). */

    /*
* First time we must setup everything.
*/

    if (*dir_handle == NULL) {
int length = strlen(name);
char* s;

if (length+3 >= MAX_PATH) {
errno = ENAMETOOLONG;
return check_error(-1, errInfo);
}

strcpy(wildcard, name);
s = wildcard+length-1;
if (*s != '/' && *s != '\\')
*++s = '\\';
*++s = '*';
*++s = '\0';
DEBUGF(("Reading %s\n", wildcard));
dir = FindFirstFile(wildcard, &findData);
if (dir == INVALID_HANDLE_VALUE)
return set_error(errInfo);
*dir_handle = (EFILE_DIR_HANDLE) dir;

if (!IS_DOT_OR_DOTDOT(findData.cFileName)) {
strcpy(buffer, findData.cFileName);
return 1;
}
    }


    /*
* Retrieve the name of the next file using the directory handle.
*/

    dir = (HANDLE) *dir_handle;

    for (;;) {
if (FindNextFile(dir, &findData)) {
if (IS_DOT_OR_DOTDOT(findData.cFileName))
continue;
strcpy(buffer, findData.cFileName);
return 1;
}

if (GetLastError() == ERROR_NO_MORE_FILES) {
FindClose(dir);
errInfo->posix_errno = errInfo->os_errno = 0;
return 0;
}

set_error(errInfo);
FindClose(dir);
return 0;
    }
}

int
efile_openfile(errInfo, name, flags, pfd, pSize)
Efile_error* errInfo; /* Where to return error codes. */
char* name; /* Name of directory to open. */
int flags; /* Flags to use for opening. */
int* pfd; /* Where to store the file descriptor. */
Sint64* pSize; /* Where to store the size of the file. */
{
    BY_HANDLE_FILE_INFORMATION fileInfo; /* File information from a handle. */
    HANDLE fd; /* Handle to open file. */
    DWORD access; /* Access mode: GENERIC_READ, GENERIC_WRITE. */
    DWORD crFlags;

    switch (flags & (EFILE_MODE_READ|EFILE_MODE_WRITE)) {
    case EFILE_MODE_READ:
access = GENERIC_READ;
crFlags = OPEN_EXISTING;
break;
    case EFILE_MODE_WRITE:
access = GENERIC_WRITE;
crFlags = CREATE_ALWAYS;
break;
    case EFILE_MODE_READ_WRITE:
access = GENERIC_READ|GENERIC_WRITE;
crFlags = OPEN_ALWAYS;
break;
    default:
errno = EINVAL;
check_error(-1, errInfo);
return 0;
    }

    if (flags & EFILE_MODE_APPEND) {
crFlags = OPEN_ALWAYS;
    }
    fd = CreateFile(name, access, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, crFlags, FILE_ATTRIBUTE_NORMAL, NULL);

    /*
* Check for errors.
*/

    if (fd == INVALID_HANDLE_VALUE) {
DWORD attr;

set_error(errInfo);

/*
* If the error is EACESS, the reason could be that we tried to
* open a directory. In that case, we'll change the error code
* to EISDIR.
*/
if (errInfo->posix_errno &&
(attr = GetFileAttributes(name)) != INVALID_FILE_ATTRIBUTES &&
(attr & FILE_ATTRIBUTE_DIRECTORY)) {
errInfo->posix_errno = EISDIR;
}
return 0;
    }

    /*
* Get and return the length of the open file.
*/
       
    if (!GetFileInformationByHandle(fd, &fileInfo))
return set_error(errInfo);
    *pfd = (int) fd;
    if (pSize) {
*pSize = (Sint64)
(((Uint64)fileInfo.nFileSizeHigh << 32) |
(Uint64)fileInfo.nFileSizeLow);
    }
    return 1;
}

int
efile_may_openfile(Efile_error* errInfo, char *name) {
    DWORD attr;

    if ((attr = GetFileAttributes(name)) == INVALID_FILE_ATTRIBUTES) {
return check_error(-1, errInfo);
    }

    if (attr & FILE_ATTRIBUTE_DIRECTORY) {
errno = EISDIR;
return check_error(-1, errInfo);
    }
    return 1;
#if 0
struct stat statbuf;
if (stat(name, &statbuf)) {
return check_error(-1, errInfo);
}
if (ISDIR(statbuf)) {
errno = EISDIR;
return check_error(-1, errInfo);
}
return 1;
#endif
}

void
efile_closefile(fd)
int fd; /* File descriptor for file to close. */
{
    CloseHandle((HANDLE) fd);
}

int
efile_fdatasync(errInfo, fd)
Efile_error* errInfo; /* Where to return error codes. */
int fd; /* File descriptor for file to sync. */
{
    /* Not available in Windows, just call regular fsync */
    return efile_fsync(errInfo, fd);
}

int
efile_fsync(errInfo, fd)
Efile_error* errInfo; /* Where to return error codes. */
int fd; /* File descriptor for file to sync. */
{
    if (!FlushFileBuffers((HANDLE) fd)) {
return check_error(-1, errInfo);
    }
    return 1;
}

int
efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo,
char* orig_name, int info_for_link)
{
    HANDLE findhandle; /* Handle returned by FindFirstFile(). */
    WIN32_FIND_DATA findbuf; /* Data return by FindFirstFile(). */
    char name[_MAX_PATH];
    int name_len;
    char* path;
    char pathbuf[_MAX_PATH];
    int drive; /* Drive for filename (1 = A:, 2 = B: etc). */

    /* Don't allow wildcards to be interpreted by system */

    if (strpbrk(orig_name, "?*")) {
    enoent:
errInfo->posix_errno = ENOENT;
errInfo->os_errno = ERROR_FILE_NOT_FOUND;
        return 0;
    }

    /*
* Move the name to a buffer and make sure to remove a trailing
* slash, because it causes FindFirstFile() to fail on Win95.
*/

    if ((name_len = strlen(orig_name)) >= _MAX_PATH) {
goto enoent;
    } else {
strcpy(name, orig_name);
if (name_len > 2 && ISSLASH(name[name_len-1]) &&
name[name_len-2] != ':') {
name[name_len-1] = '\0';
}
    }
    
    /* Try to get disk from name. If none, get current disk. */

    if (name[1] != ':') {
        drive = 0;
        if (GetCurrentDirectory(sizeof(pathbuf), pathbuf) &&
pathbuf[1] == ':') {
drive = tolower(pathbuf[0]) - 'a' + 1;
}
    } else if (*name && name[2] == '\0') {
/*
* X: and nothing more is an error.
*/
errInfo->posix_errno = ENOENT;
errInfo->os_errno = ERROR_FILE_NOT_FOUND;
return 0;
    } else
        drive = tolower(*name) - 'a' + 1;

    findhandle = FindFirstFile(name, &findbuf);
    if (findhandle == INVALID_HANDLE_VALUE) {
        if (!(strpbrk(name, "./\\") &&
(path = _fullpath(pathbuf, name, _MAX_PATH)) &&
/* root dir. ('C:\') or UNC root dir. ('\\server\share\') */
((strlen(path) == 3) || IsRootUNCName(path)) &&
(GetDriveType(path) > 1) ) ) {
errInfo->posix_errno = ENOENT;
errInfo->os_errno = ERROR_FILE_NOT_FOUND;
return 0;
}

        /*
* Root directories (such as C:\ or \\server\share\ are fabricated.
*/

        findbuf.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY;
        findbuf.nFileSizeHigh = 0;
        findbuf.nFileSizeLow = 0;
        findbuf.cFileName[0] = '\0';

pInfo->modifyTime.year = 1980;
pInfo->modifyTime.month = 1;
pInfo->modifyTime.day = 1;
pInfo->modifyTime.hour = 0;
pInfo->modifyTime.minute = 0;
pInfo->modifyTime.second = 0;

pInfo->accessTime = pInfo->modifyTime;
    } else {
SYSTEMTIME SystemTime;
        FILETIME LocalFTime;

#define GET_TIME(dst, src) \
if (!FileTimeToLocalFileTime(&findbuf.src, &LocalFTime) || \
!FileTimeToSystemTime(&LocalFTime, &SystemTime)) { \
return set_error(errInfo); \
} \
(dst).year = SystemTime.wYear; \
(dst).month = SystemTime.wMonth; \
(dst).day = SystemTime.wDay; \
(dst).hour = SystemTime.wHour; \
(dst).minute = SystemTime.wMinute; \
(dst).second = SystemTime.wSecond;

        GET_TIME(pInfo->modifyTime, ftLastWriteTime);

        if (findbuf.ftLastAccessTime.dwLowDateTime == 0 &&
findbuf.ftLastAccessTime.dwHighDateTime == 0) {
pInfo->accessTime = pInfo->modifyTime;
} else {
GET_TIME(pInfo->accessTime, ftLastAccessTime);
}

        if (findbuf.ftCreationTime.dwLowDateTime == 0 &&
findbuf.ftCreationTime.dwHighDateTime == 0) {
pInfo->cTime = pInfo->modifyTime;
} else {
GET_TIME(pInfo->cTime, ftCreationTime);
}
#undef GET_TIME
        FindClose(findhandle);
    }

    pInfo->size_low = findbuf.nFileSizeLow;
    pInfo->size_high = findbuf.nFileSizeHigh;

    if (findbuf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
pInfo->type = FT_DIRECTORY;
    else
pInfo->type = FT_REGULAR;

    if (findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
pInfo->access = FA_READ;
    else
pInfo->access = FA_READ|FA_WRITE;

    pInfo->mode = dos_to_posix_mode(findbuf.dwFileAttributes, name);
    pInfo->links = 1;
    pInfo->major_device = drive;
    pInfo->minor_device = 0;
    pInfo->inode = 0;
    pInfo->uid = 0;
    pInfo->gid = 0;
    
    return 1;
}

int
efile_write_info(errInfo, pInfo, name)
Efile_error* errInfo;
Efile_info* pInfo;
char* name;
{
    SYSTEMTIME timebuf;
    FILETIME LocalFileTime;
    FILETIME ModifyFileTime;
    FILETIME AccessFileTime;
    FILETIME CreationFileTime;
    HANDLE fd;
    FILETIME* mtime = NULL;
    FILETIME* atime = NULL;
    FILETIME* ctime = NULL;
    DWORD attr;
    DWORD tempAttr;
    BOOL modifyTime = FALSE;

    /*
* Get the attributes for the file.
*/

    tempAttr = attr = GetFileAttributes((LPTSTR)name);
    if (attr == 0xffffffff) {
return set_error(errInfo);
    }
    if (pInfo->mode != -1) {
if (pInfo->mode & _S_IWRITE) {
/* clear read only bit */
attr &= ~FILE_ATTRIBUTE_READONLY;
} else {
/* set read only bit */
attr |= FILE_ATTRIBUTE_READONLY;
}
    }

    /*
* Construct all file times.
*/

#define MKTIME(tb, ts, ptr) \
timebuf.wYear = ts.year; \
timebuf.wMonth = ts.month; \
timebuf.wDay = ts.day; \
timebuf.wHour = ts.hour; \
timebuf.wMinute = ts.minute; \
timebuf.wSecond = ts.second; \
timebuf.wMilliseconds = 0; \
if (ts.year != -1) { \
modifyTime = TRUE; \
ptr = &tb; \
if (!SystemTimeToFileTime(&timebuf, &LocalFileTime ) || \
!LocalFileTimeToFileTime(&LocalFileTime, &tb)) { \
errno = EINVAL; \
return check_error(-1, errInfo); \
} \
}

    MKTIME(ModifyFileTime, pInfo->accessTime, mtime);
    MKTIME(AccessFileTime, pInfo->modifyTime, atime);
    MKTIME(CreationFileTime, pInfo->cTime, ctime);
#undef MKTIME

    /*
* If necessary, set the file times.
*/

    if (modifyTime) {
/*
* If the has read only access, we must temporarily turn on
* write access (this is necessary for native filesystems,
* but not for NFS filesystems).
*/

if (tempAttr & FILE_ATTRIBUTE_READONLY) {
tempAttr &= ~FILE_ATTRIBUTE_READONLY;
if (!SetFileAttributes((LPTSTR) name, tempAttr)) {
return set_error(errInfo);
}
}

fd = CreateFile(name, GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (fd != INVALID_HANDLE_VALUE) {
BOOL result = SetFileTime(fd, ctime, atime, mtime);
if (!result) {
return set_error(errInfo);
}
CloseHandle(fd);
}
    }

    /*
* If the file doesn't have the correct attributes, set them now.
* (It could have been done before setting the file times, above).
*/

    if (tempAttr != attr) {
if (!SetFileAttributes((LPTSTR) name, attr)) {
return set_error(errInfo);
}
    }
    return 1;
}


int
efile_pwrite(errInfo, fd, buf, count, offset)
Efile_error* errInfo; /* Where to return error codes. */
int fd; /* File descriptor to write to. */
char* buf; /* Buffer to write. */
size_t count; /* Number of bytes to write. */
Sint64 offset; /* where to write it */
{
    int res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL);
    if (res) {
return efile_write(errInfo, EFILE_MODE_WRITE, fd, buf, count);
    } else {
return res;
    }
}

/* position and read/write as a single atomic op */
int
efile_pread(errInfo, fd, offset, buf, count, pBytesRead)
Efile_error* errInfo; /* Where to return error codes. */
int fd; /* File descriptor to read from. */
Sint64 offset; /* Offset in bytes from BOF. */
char* buf; /* Buffer to read into. */
size_t count; /* Number of bytes to read. */
size_t* pBytesRead; /* Where to return number of bytes read. */
{
    int res = efile_seek(errInfo, fd, offset, EFILE_SEEK_SET, NULL);
    if (res) {
return efile_read(errInfo, EFILE_MODE_READ, fd, buf, count, pBytesRead);
    } else {
return res;
    }
}



int
efile_write(errInfo, flags, fd, buf, count)
Efile_error* errInfo; /* Where to return error codes. */
int flags; /* Flags given when file was opened. */
int fd; /* File descriptor to write to. */
char* buf; /* Buffer to write. */
size_t count; /* Number of bytes to write. */
{
    DWORD written; /* Bytes written in last operation. */

    if (flags & EFILE_MODE_APPEND) {
(void) SetFilePointer((HANDLE) fd, 0, NULL, FILE_END);
    }
    while (count > 0) {
if (!WriteFile((HANDLE) fd, buf, count, &written, NULL))
return set_error(errInfo);
buf += written;
count -= written;
    }
    return 1;
}

int
efile_writev(Efile_error* errInfo, /* Where to return error codes */
int flags, /* Flags given when file was
* opened */
int fd, /* File descriptor to write to */
SysIOVec* iov, /* Vector of buffer structs.
* The structs are unchanged
* after the call */
int iovcnt, /* Number of structs in vector */
size_t size) /* Number of bytes to write */
{
    int cnt; /* Buffers so far written */

    ASSERT(iovcnt >= 0);
    
    if (flags & EFILE_MODE_APPEND) {
(void) SetFilePointer((HANDLE) fd, 0, NULL, FILE_END);
    }
    for (cnt = 0; cnt < iovcnt; cnt++) {
if (iov[cnt].iov_base && iov[cnt].iov_len > 0) {
/* Non-empty buffer */
int p; /* Position in buffer */
int w = iov[cnt].iov_len;/* Bytes written in this call */
for (p = 0; p < iov[cnt].iov_len; p += w) {
if (!WriteFile((HANDLE) fd,
iov[cnt].iov_base + p,
iov[cnt].iov_len - p,
&w,
NULL))
return set_error(errInfo);
}
}
    }
    return 1;
}

int
efile_read(errInfo, flags, fd, buf, count, pBytesRead)
Efile_error* errInfo; /* Where to return error codes. */
int flags; /* Flags given when file was opened. */
int fd; /* File descriptor to read from. */
char* buf; /* Buffer to read into. */
size_t count; /* Number of bytes to read. */
size_t* pBytesRead; /* Where to return number of bytes read. */
{
    if (!ReadFile((HANDLE) fd, buf, count, (DWORD *) pBytesRead, NULL))
return set_error(errInfo);
    return 1;
}

int
efile_seek(errInfo, fd, offset, origin, new_location)
Efile_error* errInfo; /* Where to return error codes. */
int fd; /* File descriptor to do the seek on. */
Sint64 offset; /* Offset in bytes from the given origin. */
int origin; /* Origin of seek (SEEK_SET, SEEK_CUR,
* SEEK_END).
*/
Sint64* new_location; /* Resulting new location in file. */
{
    LARGE_INTEGER off, new_loc;
    
    switch (origin) {
    case EFILE_SEEK_SET: origin = FILE_BEGIN; break;
    case EFILE_SEEK_CUR: origin = FILE_CURRENT; break;
    case EFILE_SEEK_END: origin = FILE_END; break;
    default:
errno = EINVAL;
check_error(-1, errInfo);
break;
    }
    
    off.QuadPart = offset;
    if (! SetFilePointerEx((HANDLE) fd, off,
new_location ? &new_loc : NULL, origin)) {
return set_error(errInfo);
    }
    if (new_location) {
*new_location = new_loc.QuadPart;
DEBUGF(("efile_seek(offset=%ld, origin=%d) -> %ld\n",
(long) offset, origin, (long) *new_location));
    } else {
DEBUGF(("efile_seek(offset=%ld, origin=%d)\n", (long) offset, origin));
    }
    return 1;
}

int
efile_truncate_file(errInfo, fd, flags)
Efile_error* errInfo; /* Where to return error codes. */
int *fd; /* File descriptor for file to truncate. */
int flags;
{
    if (!SetEndOfFile((HANDLE) (*fd)))
return set_error(errInfo);
    return 1;
}


/*
* IsRootUNCName - returns TRUE if the argument is a UNC name specifying
* a root share. That is, if it is of the form \\server\share\.
* This routine will also return true if the argument is of the
* form \\server\share (no trailing slash) but Win32 currently
* does not like that form.
*
* Forward slashes ('/') may be used instead of backslashes ('\').
*/

static int
IsRootUNCName(const char* path)
{
    /*
* If a root UNC name, path will start with 2 (but not 3) slashes
*/

    if ((strlen(path) >= 5) /* minimum string is "//x/y" */
&& ISSLASH(path[0]) && ISSLASH(path[1]))
    {
        const char * p = path + 2 ;

        /*
* find the slash between the server name and share name
*/
        while ( * ++ p )
            if ( ISSLASH(*p) )
                break ;

        if ( *p && p[1] )
        {
            /*
* is there a further slash?
*/
            while ( * ++ p )
                if ( ISSLASH(*p) )
                    break ;

            /*
* just final slash (or no final slash)
*/
            if ( !*p || !p[1])
                return 1;
        }
    }

    return 0 ;
}

/*
* Extracts the root part of an absolute filename (by modifying the string
* pointed to by the name argument). The name can start
* with either a driver letter (for example, C:\), or a UNC name
* (for example, \\guinness\bjorn).
*
* If the name is invalid, the buffer will be modified to point to
* an empty string.
*
* Returns: 1 if the name consists of just the root part, 0 if
* the name was longer.
*/

static int
extract_root(char* name)
{
    int len = strlen(name);

    if (isalpha(name[0]) && name[1] == ':' && ISSLASH(name[2])) {
int c = name[3];
name[3] = '\0';
return c == '\0';
    } else if (len < 5 || !ISSLASH(name[0]) || !ISSLASH(name[1])) {
goto error;
    } else { /* Try to find the end of the UNC name. */
char* p;
int c;

        /*
* Find the slash between the server name and share name.
*/

for (p = name + 2; *p; p++)
            if (ISSLASH(*p))
                break;
if (*p == '\0')
goto error;

/*
* Find the slash after the share name.
*/

for (p++; *p; p++)
            if (ISSLASH(*p))
                break;
c = *p;
*p = '\0';
return c == '\0' || p[1] == '\0';
    }

 error:
    *name = '\0';
    return 1;
}

static unsigned short
dos_to_posix_mode(int attr, const char *name)
{
    register unsigned short uxmode;
    unsigned dosmode;
    register const char *p;

    dosmode = attr & 0xff;
    if ((p = name)[1] == ':')
p += 2;

    /* check to see if this is a directory - note we must make a special
* check for the root, which DOS thinks is not a directory
*/

    uxmode = (unsigned short)
(((ISSLASH(*p) && !p[1]) || (dosmode & FILE_ATTRIBUTE_DIRECTORY) ||
*p == '\0') ? _S_IFDIR|_S_IEXEC : _S_IFREG);

    /* If attribute byte does not have read-only bit, it is read-write */

    uxmode |= (dosmode & FILE_ATTRIBUTE_READONLY) ?
_S_IREAD : (_S_IREAD|_S_IWRITE);

    /* see if file appears to be executable - check extension of name */

    if (p = strrchr(name, '.')) {
        if (!stricmp(p, ".exe") ||
!stricmp(p, ".cmd") ||
!stricmp(p, ".bat") ||
!stricmp(p, ".com"))
            uxmode |= _S_IEXEC;
    }

    /* propagate user read/write/execute bits to group/other fields */

    uxmode |= (uxmode & 0700) >> 3;
    uxmode |= (uxmode & 0700) >> 6;

    return uxmode;
}

int
efile_readlink(Efile_error* errInfo, char* name, char* buffer, size_t size)
{
    errno = ENOTSUP;
    return check_error(-1, errInfo);
}


int
efile_altname(Efile_error* errInfo, char* orig_name, char* buffer, size_t size)
{
    WIN32_FIND_DATA wfd;
    HANDLE fh;
    char name[_MAX_PATH];
    int name_len;
    char* path;
    char pathbuf[_MAX_PATH];
    int drive; /* Drive for filename (1 = A:, 2 = B: etc). */

    /* Don't allow wildcards to be interpreted by system */

    if (strpbrk(orig_name, "?*")) {
    enoent:
errInfo->posix_errno = ENOENT;
errInfo->os_errno = ERROR_FILE_NOT_FOUND;
        return 0;
    }

    /*
* Move the name to a buffer and make sure to remove a trailing
* slash, because it causes FindFirstFile() to fail on Win95.
*/

    if ((name_len = strlen(orig_name)) >= _MAX_PATH) {
goto enoent;
    } else {
strcpy(name, orig_name);
if (name_len > 2 && ISSLASH(name[name_len-1]) &&
name[name_len-2] != ':') {
name[name_len-1] = '\0';
}
    }
    
    /* Try to get disk from name. If none, get current disk. */

    if (name[1] != ':') {
        drive = 0;
        if (GetCurrentDirectory(sizeof(pathbuf), pathbuf) &&
pathbuf[1] == ':') {
drive = tolower(pathbuf[0]) - 'a' + 1;
}
    } else if (*name && name[2] == '\0') {
/*
* X: and nothing more is an error.
*/
goto enoent;
    } else {
        drive = tolower(*name) - 'a' + 1;
    }
    fh = FindFirstFile(name,&wfd);
    if (fh == INVALID_HANDLE_VALUE) {
        if (!(strpbrk(name, "./\\") &&
(path = _fullpath(pathbuf, name, _MAX_PATH)) &&
/* root dir. ('C:\') or UNC root dir. ('\\server\share\') */
((strlen(path) == 3) || IsRootUNCName(path)) &&
(GetDriveType(path) > 1) ) ) {
errno = errno_map(GetLastError());
return check_error(-1, errInfo);
}
        /*
* Root directories (such as C:\ or \\server\share\ are fabricated.
*/
strcpy(buffer,name);
return 1;
    }

    strcpy(buffer,wfd.cAlternateFileName);
    if (!*buffer) {
strcpy(buffer,wfd.cFileName);
    }

    return 1;
}

int
efile_link(Efile_error* errInfo, char* old, char* new)
{
    errno = ENOTSUP;
    return check_error(-1, errInfo);
}

int
efile_symlink(Efile_error* errInfo, char* old, char* new)
{
    errno = ENOTSUP;
    return check_error(-1, errInfo);
}

int
efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset,
Sint64 length, int advise)
{
    /* posix_fadvise is not available on Windows, do nothing */
    errno = ERROR_SUCCESS;
    return check_error(0, errInfo);
}
Something went wrong with that request. Please try again.