dlls/msvcrt/dir.c

   1 /*
   2  * msvcrt.dll drive/directory functions
   3  *
   4  * Copyright 1996,1998 Marcus Meissner
   5  * Copyright 1996 Jukka Iivonen
   6  * Copyright 1997,2000 Uwe Bonnes
   7  * Copyright 2000 Jon Griffiths
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "config.h"
  25 #include "wine/port.h"
  26
  27 #include <stdarg.h>
  28 #include <time.h>
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "winternl.h"
  33 #include "wine/unicode.h"
  34 #include "msvcrt.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  38
  39 /* INTERNAL: Translate WIN32_FIND_DATAA to finddata_t  */
  40 static void msvcrt_fttofd( const WIN32_FIND_DATAA *fd, struct MSVCRT__finddata_t* ft)
  41 {
  42   DWORD dw;
  43
  44   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
  45     ft->attrib = 0;
  46   else
  47     ft->attrib = fd->dwFileAttributes;
  48
  49   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
  50   ft->time_create = dw;
  51   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
  52   ft->time_access = dw;
  53   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
  54   ft->time_write = dw;
  55   ft->size = fd->nFileSizeLow;
  56   strcpy(ft->name, fd->cFileName);
  57 }
  58
  59 /* INTERNAL: Translate WIN32_FIND_DATAW to wfinddata_t  */
  60 static void msvcrt_wfttofd( const WIN32_FIND_DATAW *fd, struct MSVCRT__wfinddata_t* ft)
  61 {
  62   DWORD dw;
  63
  64   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
  65     ft->attrib = 0;
  66   else
  67     ft->attrib = fd->dwFileAttributes;
  68
  69   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
  70   ft->time_create = dw;
  71   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
  72   ft->time_access = dw;
  73   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
  74   ft->time_write = dw;
  75   ft->size = fd->nFileSizeLow;
  76   strcpyW(ft->name, fd->cFileName);
  77 }
  78
  79 /* INTERNAL: Translate WIN32_FIND_DATAA to finddatai64_t  */
  80 static void msvcrt_fttofdi64( const WIN32_FIND_DATAA *fd, struct MSVCRT__finddatai64_t* ft)
  81 {
  82   DWORD dw;
  83
  84   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
  85     ft->attrib = 0;
  86   else
  87     ft->attrib = fd->dwFileAttributes;
  88
  89   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
  90   ft->time_create = dw;
  91   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
  92   ft->time_access = dw;
  93   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
  94   ft->time_write = dw;
  95   ft->size = ((__int64)fd->nFileSizeHigh) << 32 | fd->nFileSizeLow;
  96   strcpy(ft->name, fd->cFileName);
  97 }
  98
  99 /* INTERNAL: Translate WIN32_FIND_DATAA to finddata64_t  */
 100 static void msvcrt_fttofd64( const WIN32_FIND_DATAA *fd, struct MSVCRT__finddata64_t* ft)
 101 {
 102   DWORD dw;
 103
 104   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
 105     ft->attrib = 0;
 106   else
 107     ft->attrib = fd->dwFileAttributes;
 108
 109   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
 110   ft->time_create = dw;
 111   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
 112   ft->time_access = dw;
 113   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
 114   ft->time_write = dw;
 115   ft->size = ((__int64)fd->nFileSizeHigh) << 32 | fd->nFileSizeLow;
 116   strcpy(ft->name, fd->cFileName);
 117 }
 118
 119
 120 /* INTERNAL: Translate WIN32_FIND_DATAW to wfinddatai64_t  */
 121 static void msvcrt_wfttofdi64( const WIN32_FIND_DATAW *fd, struct MSVCRT__wfinddatai64_t* ft)
 122 {
 123   DWORD dw;
 124
 125   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
 126     ft->attrib = 0;
 127   else
 128     ft->attrib = fd->dwFileAttributes;
 129
 130   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
 131   ft->time_create = dw;
 132   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
 133   ft->time_access = dw;
 134   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
 135   ft->time_write = dw;
 136   ft->size = ((__int64)fd->nFileSizeHigh) << 32 | fd->nFileSizeLow;
 137   strcpyW(ft->name, fd->cFileName);
 138 }
 139
 140 /*********************************************************************
 141  *              _chdir (MSVCRT.@)
 142  *
 143  * Change the current working directory.
 144  *
 145  * PARAMS
 146  *  newdir [I] Directory to change to
 147  *
 148  * RETURNS
 149  *  Success: 0. The current working directory is set to newdir.
 150  *  Failure: -1. errno indicates the error.
 151  *
 152  * NOTES
 153  *  See SetCurrentDirectoryA.
 154  */
 155 int CDECL MSVCRT__chdir(const char * newdir)
 156 {
 157   if (!SetCurrentDirectoryA(newdir))
 158   {
 159     msvcrt_set_errno(newdir?GetLastError():0);
 160     return -1;
 161   }
 162   return 0;
 163 }
 164
 165 /*********************************************************************
 166  *              _wchdir (MSVCRT.@)
 167  *
 168  * Unicode version of _chdir.
 169  */
 170 int CDECL _wchdir(const MSVCRT_wchar_t * newdir)
 171 {
 172   if (!SetCurrentDirectoryW(newdir))
 173   {
 174     msvcrt_set_errno(newdir?GetLastError():0);
 175     return -1;
 176   }
 177   return 0;
 178 }
 179
 180 /*********************************************************************
 181  *              _chdrive (MSVCRT.@)
 182  *
 183  * Change the current drive.
 184  *
 185  * PARAMS
 186  *  newdrive [I] Drive number to change to (1 = 'A', 2 = 'B', ...)
 187  *
 188  * RETURNS
 189  *  Success: 0. The current drive is set to newdrive.
 190  *  Failure: -1. errno indicates the error.
 191  *
 192  * NOTES
 193  *  See SetCurrentDirectoryA.
 194  */
 195 int CDECL _chdrive(int newdrive)
 196 {
 197   WCHAR buffer[3] = {'A', ':', 0};
 198
 199   buffer[0] += newdrive - 1;
 200   if (!SetCurrentDirectoryW( buffer ))
 201   {
 202     msvcrt_set_errno(GetLastError());
 203     if (newdrive <= 0)
 204       *MSVCRT__errno() = MSVCRT_EACCES;
 205     return -1;
 206   }
 207   return 0;
 208 }
 209
 210 /*********************************************************************
 211  *              _findclose (MSVCRT.@)
 212  *
 213  * Close a handle returned by _findfirst().
 214  *
 215  * PARAMS
 216  *  hand [I] Handle to close
 217  *
 218  * RETURNS
 219  *  Success: 0. All resources associated with hand are freed.
 220  *  Failure: -1. errno indicates the error.
 221  *
 222  * NOTES
 223  *  See FindClose.
 224  */
 225 int CDECL MSVCRT__findclose(MSVCRT_intptr_t hand)
 226 {
 227   TRACE(":handle %ld\n",hand);
 228   if (!FindClose((HANDLE)hand))
 229   {
 230     msvcrt_set_errno(GetLastError());
 231     return -1;
 232   }
 233   return 0;
 234 }
 235
 236 /*********************************************************************
 237  *              _findfirst (MSVCRT.@)
 238  *
 239  * Open a handle for iterating through a directory.
 240  *
 241  * PARAMS
 242  *  fspec [I] File specification of files to iterate.
 243  *  ft    [O] Information for the first file found.
 244  *
 245  * RETURNS
 246  *  Success: A handle suitable for passing to _findnext() and _findclose().
 247  *           ft is populated with the details of the found file.
 248  *  Failure: -1. errno indicates the error.
 249  *
 250  * NOTES
 251  *  See FindFirstFileA.
 252  */
 253 MSVCRT_intptr_t CDECL MSVCRT__findfirst(const char * fspec, struct MSVCRT__finddata_t* ft)
 254 {
 255   WIN32_FIND_DATAA find_data;
 256   HANDLE hfind;
 257
 258   hfind  = FindFirstFileA(fspec, &find_data);
 259   if (hfind == INVALID_HANDLE_VALUE)
 260   {
 261     msvcrt_set_errno(GetLastError());
 262     return -1;
 263   }
 264   msvcrt_fttofd(&find_data,ft);
 265   TRACE(":got handle %p\n",hfind);
 266   return (MSVCRT_intptr_t)hfind;
 267 }
 268
 269 /*********************************************************************
 270  *              _wfindfirst (MSVCRT.@)
 271  *
 272  * Unicode version of _findfirst.
 273  */
 274 MSVCRT_intptr_t CDECL MSVCRT__wfindfirst(const MSVCRT_wchar_t * fspec, struct MSVCRT__wfinddata_t* ft)
 275 {
 276   WIN32_FIND_DATAW find_data;
 277   HANDLE hfind;
 278
 279   hfind  = FindFirstFileW(fspec, &find_data);
 280   if (hfind == INVALID_HANDLE_VALUE)
 281   {
 282     msvcrt_set_errno(GetLastError());
 283     return -1;
 284   }
 285   msvcrt_wfttofd(&find_data,ft);
 286   TRACE(":got handle %p\n",hfind);
 287   return (MSVCRT_intptr_t)hfind;
 288 }
 289
 290 /*********************************************************************
 291  *              _findfirsti64 (MSVCRT.@)
 292  *
 293  * 64-bit version of _findfirst.
 294  */
 295 MSVCRT_intptr_t CDECL MSVCRT__findfirsti64(const char * fspec, struct MSVCRT__finddatai64_t* ft)
 296 {
 297   WIN32_FIND_DATAA find_data;
 298   HANDLE hfind;
 299
 300   hfind  = FindFirstFileA(fspec, &find_data);
 301   if (hfind == INVALID_HANDLE_VALUE)
 302   {
 303     msvcrt_set_errno(GetLastError());
 304     return -1;
 305   }
 306   msvcrt_fttofdi64(&find_data,ft);
 307   TRACE(":got handle %p\n",hfind);
 308   return (MSVCRT_intptr_t)hfind;
 309 }
 310
 311 /*********************************************************************
 312  *              _findfirst64 (MSVCRT.@)
 313  *
 314  * 64-bit version of _findfirst.
 315  */
 316 MSVCRT_intptr_t CDECL MSVCRT__findfirst64(const char * fspec, struct MSVCRT__finddata64_t* ft)
 317 {
 318   WIN32_FIND_DATAA find_data;
 319   HANDLE hfind;
 320
 321   hfind  = FindFirstFileA(fspec, &find_data);
 322   if (hfind == INVALID_HANDLE_VALUE)
 323   {
 324     msvcrt_set_errno(GetLastError());
 325     return -1;
 326   }
 327   msvcrt_fttofd64(&find_data,ft);
 328   TRACE(":got handle %p\n",hfind);
 329   return (MSVCRT_intptr_t)hfind;
 330 }
 331
 332 /*********************************************************************
 333  *              _wfindfirsti64 (MSVCRT.@)
 334  *
 335  * Unicode version of _findfirsti64.
 336  */
 337 MSVCRT_intptr_t CDECL MSVCRT__wfindfirsti64(const MSVCRT_wchar_t * fspec, struct MSVCRT__wfinddatai64_t* ft)
 338 {
 339   WIN32_FIND_DATAW find_data;
 340   HANDLE hfind;
 341
 342   hfind  = FindFirstFileW(fspec, &find_data);
 343   if (hfind == INVALID_HANDLE_VALUE)
 344   {
 345     msvcrt_set_errno(GetLastError());
 346     return -1;
 347   }
 348   msvcrt_wfttofdi64(&find_data,ft);
 349   TRACE(":got handle %p\n",hfind);
 350   return (MSVCRT_intptr_t)hfind;
 351 }
 352
 353 /*********************************************************************
 354  *              _findnext (MSVCRT.@)
 355  *
 356  * Find the next file from a file search handle.
 357  *
 358  * PARAMS
 359  *  hand  [I] Handle to the search returned from _findfirst().
 360  *  ft    [O] Information for the file found.
 361  *
 362  * RETURNS
 363  *  Success: 0. ft is populated with the details of the found file.
 364  *  Failure: -1. errno indicates the error.
 365  *
 366  * NOTES
 367  *  See FindNextFileA.
 368  */
 369 int CDECL MSVCRT__findnext(MSVCRT_intptr_t hand, struct MSVCRT__finddata_t * ft)
 370 {
 371   WIN32_FIND_DATAA find_data;
 372
 373   if (!FindNextFileA((HANDLE)hand, &find_data))
 374   {
 375     *MSVCRT__errno() = MSVCRT_ENOENT;
 376     return -1;
 377   }
 378
 379   msvcrt_fttofd(&find_data,ft);
 380   return 0;
 381 }
 382
 383 /*********************************************************************
 384  *              _wfindnext (MSVCRT.@)
 385  *
 386  * Unicode version of _findnext.
 387  */
 388 int CDECL MSVCRT__wfindnext(MSVCRT_intptr_t hand, struct MSVCRT__wfinddata_t * ft)
 389 {
 390   WIN32_FIND_DATAW find_data;
 391
 392   if (!FindNextFileW((HANDLE)hand, &find_data))
 393   {
 394     *MSVCRT__errno() = MSVCRT_ENOENT;
 395     return -1;
 396   }
 397
 398   msvcrt_wfttofd(&find_data,ft);
 399   return 0;
 400 }
 401
 402 /*********************************************************************
 403  *              _findnexti64 (MSVCRT.@)
 404  *
 405  * 64-bit version of _findnext.
 406  */
 407 int CDECL MSVCRT__findnexti64(MSVCRT_intptr_t hand, struct MSVCRT__finddatai64_t * ft)
 408 {
 409   WIN32_FIND_DATAA find_data;
 410
 411   if (!FindNextFileA((HANDLE)hand, &find_data))
 412   {
 413     *MSVCRT__errno() = MSVCRT_ENOENT;
 414     return -1;
 415   }
 416
 417   msvcrt_fttofdi64(&find_data,ft);
 418   return 0;
 419 }
 420
 421 /*********************************************************************
 422  *              _findnext64 (MSVCRT.@)
 423  *
 424  * 64-bit version of _findnext.
 425  */
 426 int CDECL MSVCRT__findnext64(long hand, struct MSVCRT__finddata64_t * ft)
 427 {
 428   WIN32_FIND_DATAA find_data;
 429
 430   if (!FindNextFileA((HANDLE)hand, &find_data))
 431   {
 432     *MSVCRT__errno() = MSVCRT_ENOENT;
 433     return -1;
 434   }
 435
 436   msvcrt_fttofd64(&find_data,ft);
 437   return 0;
 438 }
 439
 440 /*********************************************************************
 441  *              _wfindnexti64 (MSVCRT.@)
 442  *
 443  * Unicode version of _findnexti64.
 444  */
 445 int CDECL MSVCRT__wfindnexti64(MSVCRT_intptr_t hand, struct MSVCRT__wfinddatai64_t * ft)
 446 {
 447   WIN32_FIND_DATAW find_data;
 448
 449   if (!FindNextFileW((HANDLE)hand, &find_data))
 450   {
 451     *MSVCRT__errno() = MSVCRT_ENOENT;
 452     return -1;
 453   }
 454
 455   msvcrt_wfttofdi64(&find_data,ft);
 456   return 0;
 457 }
 458
 459 /*********************************************************************
 460  *              _getcwd (MSVCRT.@)
 461  *
 462  * Get the current working directory.
 463  *
 464  * PARAMS
 465  *  buf  [O] Destination for current working directory.
 466  *  size [I] Size of buf in characters
 467  *
 468  * RETURNS
 469  * Success: If buf is NULL, returns an allocated string containing the path.
 470  *          Otherwise populates buf with the path and returns it.
 471  * Failure: NULL. errno indicates the error.
 472  */
 473 char* CDECL _getcwd(char * buf, int size)
 474 {
 475   char dir[MAX_PATH];
 476   int dir_len = GetCurrentDirectoryA(MAX_PATH,dir);
 477
 478   if (dir_len < 1)
 479     return NULL; /* FIXME: Real return value untested */
 480
 481   if (!buf)
 482   {
 483       if (size <= dir_len) size = dir_len + 1;
 484       if (!(buf = MSVCRT_malloc( size ))) return NULL;
 485   }
 486   else if (dir_len >= size)
 487   {
 488     *MSVCRT__errno() = MSVCRT_ERANGE;
 489     return NULL; /* buf too small */
 490   }
 491   strcpy(buf,dir);
 492   return buf;
 493 }
 494
 495 /*********************************************************************
 496  *              _wgetcwd (MSVCRT.@)
 497  *
 498  * Unicode version of _getcwd.
 499  */
 500 MSVCRT_wchar_t* CDECL _wgetcwd(MSVCRT_wchar_t * buf, int size)
 501 {
 502   MSVCRT_wchar_t dir[MAX_PATH];
 503   int dir_len = GetCurrentDirectoryW(MAX_PATH,dir);
 504
 505   if (dir_len < 1)
 506     return NULL; /* FIXME: Real return value untested */
 507
 508   if (!buf)
 509   {
 510       if (size <= dir_len) size = dir_len + 1;
 511       if (!(buf = MSVCRT_malloc( size * sizeof(WCHAR) ))) return NULL;
 512   }
 513   if (dir_len >= size)
 514   {
 515     *MSVCRT__errno() = MSVCRT_ERANGE;
 516     return NULL; /* buf too small */
 517   }
 518   strcpyW(buf,dir);
 519   return buf;
 520 }
 521
 522 /*********************************************************************
 523  *              _getdrive (MSVCRT.@)
 524  *
 525  * Get the current drive number.
 526  *
 527  * PARAMS
 528  *  None.
 529  *
 530  * RETURNS
 531  *  Success: The drive letter number from 1 to 26 ("A:" to "Z:").
 532  *  Failure: 0.
 533  */
 534 int CDECL _getdrive(void)
 535 {
 536     WCHAR buffer[MAX_PATH];
 537     if (GetCurrentDirectoryW( MAX_PATH, buffer ) &&
 538         buffer[0] >= 'A' && buffer[0] <= 'z' && buffer[1] == ':')
 539         return toupperW(buffer[0]) - 'A' + 1;
 540     return 0;
 541 }
 542
 543 /*********************************************************************
 544  *              _getdcwd (MSVCRT.@)
 545  *
 546  * Get the current working directory on a given disk.
 547  *
 548  * PARAMS
 549  *  drive [I] Drive letter to get the current working directory from.
 550  *  buf   [O] Destination for the current working directory.
 551  *  size  [I] Length of drive in characters.
 552  *
 553  * RETURNS
 554  *  Success: If drive is NULL, returns an allocated string containing the path.
 555  *           Otherwise populates drive with the path and returns it.
 556  *  Failure: NULL. errno indicates the error.
 557  */
 558 char* CDECL _getdcwd(int drive, char * buf, int size)
 559 {
 560   static char* dummy;
 561
 562   TRACE(":drive %d(%c), size %d\n",drive, drive + 'A' - 1, size);
 563
 564   if (!drive || drive == _getdrive())
 565     return _getcwd(buf,size); /* current */
 566   else
 567   {
 568     char dir[MAX_PATH];
 569     char drivespec[4] = {'A', ':', 0};
 570     int dir_len;
 571
 572     drivespec[0] += drive - 1;
 573     if (GetDriveTypeA(drivespec) < DRIVE_REMOVABLE)
 574     {
 575       *MSVCRT__errno() = MSVCRT_EACCES;
 576       return NULL;
 577     }
 578
 579     dir_len = GetFullPathNameA(drivespec,MAX_PATH,dir,&dummy);
 580     if (dir_len >= size || dir_len < 1)
 581     {
 582       *MSVCRT__errno() = MSVCRT_ERANGE;
 583       return NULL; /* buf too small */
 584     }
 585
 586     TRACE(":returning '%s'\n", dir);
 587     if (!buf)
 588       return _strdup(dir); /* allocate */
 589
 590     strcpy(buf,dir);
 591   }
 592   return buf;
 593 }
 594
 595 /*********************************************************************
 596  *              _wgetdcwd (MSVCRT.@)
 597  *
 598  * Unicode version of _wgetdcwd.
 599  */
 600 MSVCRT_wchar_t* CDECL _wgetdcwd(int drive, MSVCRT_wchar_t * buf, int size)
 601 {
 602   static MSVCRT_wchar_t* dummy;
 603
 604   TRACE(":drive %d(%c), size %d\n",drive, drive + 'A' - 1, size);
 605
 606   if (!drive || drive == _getdrive())
 607     return _wgetcwd(buf,size); /* current */
 608   else
 609   {
 610     MSVCRT_wchar_t dir[MAX_PATH];
 611     MSVCRT_wchar_t drivespec[4] = {'A', ':', '\\', 0};
 612     int dir_len;
 613
 614     drivespec[0] += drive - 1;
 615     if (GetDriveTypeW(drivespec) < DRIVE_REMOVABLE)
 616     {
 617       *MSVCRT__errno() = MSVCRT_EACCES;
 618       return NULL;
 619     }
 620
 621     dir_len = GetFullPathNameW(drivespec,MAX_PATH,dir,&dummy);
 622     if (dir_len >= size || dir_len < 1)
 623     {
 624       *MSVCRT__errno() = MSVCRT_ERANGE;
 625       return NULL; /* buf too small */
 626     }
 627
 628     TRACE(":returning %s\n", debugstr_w(dir));
 629     if (!buf)
 630       return _wcsdup(dir); /* allocate */
 631     strcpyW(buf,dir);
 632   }
 633   return buf;
 634 }
 635
 636 /*********************************************************************
 637  *              _getdiskfree (MSVCRT.@)
 638  *
 639  * Get information about the free space on a drive.
 640  *
 641  * PARAMS
 642  *  disk [I] Drive number to get information about (1 = 'A', 2 = 'B', ...)
 643  *  info [O] Destination for the resulting information.
 644  *
 645  * RETURNS
 646  *  Success: 0. info is updated with the free space information.
 647  *  Failure: An error code from GetLastError().
 648  *
 649  * NOTES
 650  *  See GetLastError().
 651  */
 652 unsigned int CDECL MSVCRT__getdiskfree(unsigned int disk, struct MSVCRT__diskfree_t * d)
 653 {
 654   WCHAR drivespec[4] = {'@', ':', '\\', 0};
 655   DWORD ret[4];
 656   unsigned int err;
 657
 658   if (disk > 26)
 659     return ERROR_INVALID_PARAMETER; /* MSVCRT doesn't set errno here */
 660
 661   drivespec[0] += disk; /* make a drive letter */
 662
 663   if (GetDiskFreeSpaceW(disk==0?NULL:drivespec,ret,ret+1,ret+2,ret+3))
 664   {
 665     d->sectors_per_cluster = ret[0];
 666     d->bytes_per_sector = ret[1];
 667     d->avail_clusters = ret[2];
 668     d->total_clusters = ret[3];
 669     return 0;
 670   }
 671   err = GetLastError();
 672   msvcrt_set_errno(err);
 673   return err;
 674 }
 675
 676 /*********************************************************************
 677  *              _mkdir (MSVCRT.@)
 678  *
 679  * Create a directory.
 680  *
 681  * PARAMS
 682  *  newdir [I] Name of directory to create.
 683  *
 684  * RETURNS
 685  *  Success: 0. The directory indicated by newdir is created.
 686  *  Failure: -1. errno indicates the error.
 687  *
 688  * NOTES
 689  *  See CreateDirectoryA.
 690  */
 691 int CDECL MSVCRT__mkdir(const char * newdir)
 692 {
 693   if (CreateDirectoryA(newdir,NULL))
 694     return 0;
 695   msvcrt_set_errno(GetLastError());
 696   return -1;
 697 }
 698
 699 /*********************************************************************
 700  *              _wmkdir (MSVCRT.@)
 701  *
 702  * Unicode version of _mkdir.
 703  */
 704 int CDECL _wmkdir(const MSVCRT_wchar_t* newdir)
 705 {
 706   if (CreateDirectoryW(newdir,NULL))
 707     return 0;
 708   msvcrt_set_errno(GetLastError());
 709   return -1;
 710 }
 711
 712 /*********************************************************************
 713  *              _rmdir (MSVCRT.@)
 714  *
 715  * Delete a directory.
 716  *
 717  * PARAMS
 718  *  dir [I] Name of directory to delete.
 719  *
 720  * RETURNS
 721  *  Success: 0. The directory indicated by newdir is deleted.
 722  *  Failure: -1. errno indicates the error.
 723  *
 724  * NOTES
 725  *  See RemoveDirectoryA.
 726  */
 727 int CDECL MSVCRT__rmdir(const char * dir)
 728 {
 729   if (RemoveDirectoryA(dir))
 730     return 0;
 731   msvcrt_set_errno(GetLastError());
 732   return -1;
 733 }
 734
 735 /*********************************************************************
 736  *              _wrmdir (MSVCRT.@)
 737  *
 738  * Unicode version of _rmdir.
 739  */
 740 int CDECL _wrmdir(const MSVCRT_wchar_t * dir)
 741 {
 742   if (RemoveDirectoryW(dir))
 743     return 0;
 744   msvcrt_set_errno(GetLastError());
 745   return -1;
 746 }
 747
 748 /*********************************************************************
 749  *              _wsplitpath (MSVCRT.@)
 750  *
 751  * Unicode version of _splitpath.
 752  */
 753 void CDECL _wsplitpath(const MSVCRT_wchar_t *inpath, MSVCRT_wchar_t *drv, MSVCRT_wchar_t *dir,
 754                        MSVCRT_wchar_t *fname, MSVCRT_wchar_t *ext )
 755 {
 756     const MSVCRT_wchar_t *p, *end;
 757
 758     if (inpath[0] && inpath[1] == ':')
 759     {
 760         if (drv)
 761         {
 762             drv[0] = inpath[0];
 763             drv[1] = inpath[1];
 764             drv[2] = 0;
 765         }
 766         inpath += 2;
 767     }
 768     else if (drv) drv[0] = 0;
 769
 770     /* look for end of directory part */
 771     end = NULL;
 772     for (p = inpath; *p; p++) if (*p == '/' || *p == '\\') end = p + 1;
 773
 774     if (end)  /* got a directory */
 775     {
 776         if (dir)
 777         {
 778             memcpy( dir, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
 779             dir[end - inpath] = 0;
 780         }
 781         inpath = end;
 782     }
 783     else if (dir) dir[0] = 0;
 784
 785     /* look for extension: what's after the last dot */
 786     end = NULL;
 787     for (p = inpath; *p; p++) if (*p == '.') end = p;
 788
 789     if (!end) end = p; /* there's no extension */
 790
 791     if (fname)
 792     {
 793         memcpy( fname, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
 794         fname[end - inpath] = 0;
 795     }
 796     if (ext) strcpyW( ext, end );
 797 }
 798
 799 /******************************************************************
 800  *              _wsplitpath_s (MSVCRT.@)
 801  *
 802  * Secure version of _wsplitpath
 803  */
 804 int _wsplitpath_s(const MSVCRT_wchar_t* inpath,
 805                   MSVCRT_wchar_t* drive, MSVCRT_size_t sz_drive,
 806                   MSVCRT_wchar_t* dir, MSVCRT_size_t sz_dir,
 807                   MSVCRT_wchar_t* fname, MSVCRT_size_t sz_fname,
 808                   MSVCRT_wchar_t* ext, MSVCRT_size_t sz_ext)
 809 {
 810     const MSVCRT_wchar_t *p, *end;
 811
 812     if (!inpath) return MSVCRT_EINVAL;
 813     if (!drive && sz_drive) return MSVCRT_EINVAL;
 814     if (drive && !sz_drive) return MSVCRT_EINVAL;
 815     if (!dir && sz_dir) return MSVCRT_EINVAL;
 816     if (dir && !sz_dir) return MSVCRT_EINVAL;
 817     if (!fname && sz_fname) return MSVCRT_EINVAL;
 818     if (fname && !sz_fname) return MSVCRT_EINVAL;
 819     if (!ext && sz_ext) return MSVCRT_EINVAL;
 820     if (ext && !sz_ext) return MSVCRT_EINVAL;
 821
 822     if (inpath[0] && inpath[1] == ':')
 823     {
 824         if (drive)
 825         {
 826             if (sz_drive <= 2) goto do_error;
 827             drive[0] = inpath[0];
 828             drive[1] = inpath[1];
 829             drive[2] = 0;
 830         }
 831         inpath += 2;
 832     }
 833     else if (drive) drive[0] = '\0';
 834
 835     /* look for end of directory part */
 836     end = NULL;
 837     for (p = inpath; *p; p++) if (*p == '/' || *p == '\\') end = p + 1;
 838
 839     if (end)  /* got a directory */
 840     {
 841         if (dir)
 842         {
 843             if (sz_dir <= end - inpath) goto do_error;
 844             memcpy( dir, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
 845             dir[end - inpath] = 0;
 846         }
 847         inpath = end;
 848     }
 849     else if (dir) dir[0] = 0;
 850
 851     /* look for extension: what's after the last dot */
 852     end = NULL;
 853     for (p = inpath; *p; p++) if (*p == '.') end = p;
 854
 855     if (!end) end = p; /* there's no extension */
 856
 857     if (fname)
 858     {
 859         if (sz_fname <= end - inpath) goto do_error;
 860         memcpy( fname, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
 861         fname[end - inpath] = 0;
 862     }
 863     if (ext)
 864     {
 865         if (sz_ext <= strlenW(end)) goto do_error;
 866         strcpyW( ext, end );
 867     }
 868     return 0;
 869 do_error:
 870     if (drive)  drive[0] = '\0';
 871     if (dir)    dir[0] = '\0';
 872     if (fname)  fname[0]= '\0';
 873     if (ext)    ext[0]= '\0';
 874     return MSVCRT_ERANGE;
 875 }
 876
 877 /*********************************************************************
 878  *              _wfullpath (MSVCRT.@)
 879  *
 880  * Unicode version of _fullpath.
 881  */
 882 MSVCRT_wchar_t * CDECL _wfullpath(MSVCRT_wchar_t * absPath, const MSVCRT_wchar_t* relPath, MSVCRT_size_t size)
 883 {
 884   DWORD rc;
 885   WCHAR* buffer;
 886   WCHAR* lastpart;
 887   BOOL alloced = FALSE;
 888
 889   if (!relPath || !*relPath)
 890     return _wgetcwd(absPath, size);
 891
 892   if (absPath == NULL)
 893   {
 894       buffer = MSVCRT_malloc(MAX_PATH * sizeof(WCHAR));
 895       size = MAX_PATH;
 896       alloced = TRUE;
 897   }
 898   else
 899       buffer = absPath;
 900
 901   if (size < 4)
 902   {
 903     *MSVCRT__errno() = MSVCRT_ERANGE;
 904     return NULL;
 905   }
 906
 907   TRACE(":resolving relative path %s\n",debugstr_w(relPath));
 908
 909   rc = GetFullPathNameW(relPath,size,buffer,&lastpart);
 910
 911   if (rc > 0 && rc <= size )
 912     return buffer;
 913   else
 914   {
 915       if (alloced)
 916           MSVCRT_free(buffer);
 917         return NULL;
 918   }
 919 }
 920
 921 /*********************************************************************
 922  *              _fullpath (MSVCRT.@)
 923  *
 924  * Create an absolute path from a relative path.
 925  *
 926  * PARAMS
 927  *  absPath [O] Destination for absolute path
 928  *  relPath [I] Relative path to convert to absolute
 929  *  size    [I] Length of absPath in characters.
 930  *
 931  * RETURNS
 932  * Success: If absPath is NULL, returns an allocated string containing the path.
 933  *          Otherwise populates absPath with the path and returns it.
 934  * Failure: NULL. errno indicates the error.
 935  */
 936 char * CDECL _fullpath(char * absPath, const char* relPath, unsigned int size)
 937 {
 938   DWORD rc;
 939   char* lastpart;
 940   char* buffer;
 941   BOOL alloced = FALSE;
 942
 943   if (!relPath || !*relPath)
 944     return _getcwd(absPath, size);
 945
 946   if (absPath == NULL)
 947   {
 948       buffer = MSVCRT_malloc(MAX_PATH);
 949       size = MAX_PATH;
 950       alloced = TRUE;
 951   }
 952   else
 953       buffer = absPath;
 954
 955   if (size < 4)
 956   {
 957     *MSVCRT__errno() = MSVCRT_ERANGE;
 958     return NULL;
 959   }
 960
 961   TRACE(":resolving relative path '%s'\n",relPath);
 962
 963   rc = GetFullPathNameA(relPath,size,buffer,&lastpart);
 964
 965   if (rc > 0 && rc <= size)
 966     return buffer;
 967   else
 968   {
 969       if (alloced)
 970           MSVCRT_free(buffer);
 971         return NULL;
 972   }
 973 }
 974
 975 /*********************************************************************
 976  *              _makepath (MSVCRT.@)
 977  *
 978  * Create a pathname.
 979  *
 980  * PARAMS
 981  *  path      [O] Destination for created pathname
 982  *  drive     [I] Drive letter (e.g. "A:")
 983  *  directory [I] Directory
 984  *  filename  [I] Name of the file, excluding extension
 985  *  extension [I] File extension (e.g. ".TXT")
 986  *
 987  * RETURNS
 988  *  Nothing. If path is not large enough to hold the resulting pathname,
 989  *  random process memory will be overwritten.
 990  */
 991 VOID CDECL _makepath(char * path, const char * drive,
 992                      const char *directory, const char * filename,
 993                      const char * extension)
 994 {
 995     char *p = path;
 996
 997     TRACE("(%s %s %s %s)\n", debugstr_a(drive), debugstr_a(directory),
 998           debugstr_a(filename), debugstr_a(extension) );
 999
1000     if ( !path )
1001         return;
1002
1003     if (drive && drive[0])
1004     {
1005         *p++ = drive[0];
1006         *p++ = ':';
1007     }
1008     if (directory && directory[0])
1009     {
1010         unsigned int len = strlen(directory);
1011         memmove(p, directory, len);
1012         p += len;
1013         if (p[-1] != '/' && p[-1] != '\\')
1014             *p++ = '\\';
1015     }
1016     if (filename && filename[0])
1017     {
1018         unsigned int len = strlen(filename);
1019         memmove(p, filename, len);
1020         p += len;
1021     }
1022     if (extension && extension[0])
1023     {
1024         if (extension[0] != '.')
1025             *p++ = '.';
1026         strcpy(p, extension);
1027     }
1028     else
1029         *p = '\0';
1030     TRACE("returning %s\n",path);
1031 }
1032
1033 /*********************************************************************
1034  *              _wmakepath (MSVCRT.@)
1035  *
1036  * Unicode version of _wmakepath.
1037  */
1038 VOID CDECL _wmakepath(MSVCRT_wchar_t *path, const MSVCRT_wchar_t *drive, const MSVCRT_wchar_t *directory,
1039                       const MSVCRT_wchar_t *filename, const MSVCRT_wchar_t *extension)
1040 {
1041     MSVCRT_wchar_t *p = path;
1042
1043     TRACE("%s %s %s %s\n", debugstr_w(drive), debugstr_w(directory),
1044           debugstr_w(filename), debugstr_w(extension));
1045
1046     if ( !path )
1047         return;
1048
1049     if (drive && drive[0])
1050     {
1051         *p++ = drive[0];
1052         *p++ = ':';
1053     }
1054     if (directory && directory[0])
1055     {
1056         unsigned int len = strlenW(directory);
1057         memmove(p, directory, len * sizeof(MSVCRT_wchar_t));
1058         p += len;
1059         if (p[-1] != '/' && p[-1] != '\\')
1060             *p++ = '\\';
1061     }
1062     if (filename && filename[0])
1063     {
1064         unsigned int len = strlenW(filename);
1065         memmove(p, filename, len * sizeof(MSVCRT_wchar_t));
1066         p += len;
1067     }
1068     if (extension && extension[0])
1069     {
1070         if (extension[0] != '.')
1071             *p++ = '.';
1072         strcpyW(p, extension);
1073     }
1074     else
1075         *p = '\0';
1076
1077     TRACE("returning %s\n", debugstr_w(path));
1078 }
1079
1080 /*********************************************************************
1081  *              _searchenv (MSVCRT.@)
1082  *
1083  * Search for a file in a list of paths from an environment variable.
1084  *
1085  * PARAMS
1086  *  file   [I] Name of the file to search for.
1087  *  env    [I] Name of the environment variable containing a list of paths.
1088  *  buf    [O] Destination for the found file path.
1089  *
1090  * RETURNS
1091  *  Nothing. If the file is not found, buf will contain an empty string
1092  *  and errno is set.
1093  */
1094 void CDECL _searchenv(const char* file, const char* env, char *buf)
1095 {
1096   char*envVal, *penv;
1097   char curPath[MAX_PATH];
1098
1099   *buf = '\0';
1100
1101   /* Try CWD first */
1102   if (GetFileAttributesA( file ) != INVALID_FILE_ATTRIBUTES)
1103   {
1104     GetFullPathNameA( file, MAX_PATH, buf, NULL );
1105     /* Sigh. This error is *always* set, regardless of success */
1106     msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1107     return;
1108   }
1109
1110   /* Search given environment variable */
1111   envVal = MSVCRT_getenv(env);
1112   if (!envVal)
1113   {
1114     msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1115     return;
1116   }
1117
1118   penv = envVal;
1119   TRACE(":searching for %s in paths %s\n", file, envVal);
1120
1121   do
1122   {
1123     char *end = penv;
1124
1125     while(*end && *end != ';') end++; /* Find end of next path */
1126     if (penv == end || !*penv)
1127     {
1128       msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1129       return;
1130     }
1131     memcpy(curPath, penv, end - penv);
1132     if (curPath[end - penv] != '/' && curPath[end - penv] != '\\')
1133     {
1134       curPath[end - penv] = '\\';
1135       curPath[end - penv + 1] = '\0';
1136     }
1137     else
1138       curPath[end - penv] = '\0';
1139
1140     strcat(curPath, file);
1141     TRACE("Checking for file %s\n", curPath);
1142     if (GetFileAttributesA( curPath ) != INVALID_FILE_ATTRIBUTES)
1143     {
1144       strcpy(buf, curPath);
1145       msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1146       return; /* Found */
1147     }
1148     penv = *end ? end + 1 : end;
1149   } while(1);
1150 }
1151
1152 /*********************************************************************
1153  *      _wsearchenv (MSVCRT.@)
1154  *
1155  * Unicode version of _searchenv
1156  */
1157 void CDECL _wsearchenv(const MSVCRT_wchar_t* file, const MSVCRT_wchar_t* env, MSVCRT_wchar_t *buf)
1158 {
1159   MSVCRT_wchar_t *envVal, *penv;
1160   MSVCRT_wchar_t curPath[MAX_PATH];
1161
1162   *buf = '\0';
1163
1164   /* Try CWD first */
1165   if (GetFileAttributesW( file ) != INVALID_FILE_ATTRIBUTES)
1166   {
1167     GetFullPathNameW( file, MAX_PATH, buf, NULL );
1168     /* Sigh. This error is *always* set, regardless of success */
1169     msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1170     return;
1171   }
1172
1173   /* Search given environment variable */
1174   envVal = _wgetenv(env);
1175   if (!envVal)
1176   {
1177     msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1178     return;
1179   }
1180
1181   penv = envVal;
1182   TRACE(":searching for %s in paths %s\n", debugstr_w(file), debugstr_w(envVal));
1183
1184   do
1185   {
1186     MSVCRT_wchar_t *end = penv;
1187
1188     while(*end && *end != ';') end++; /* Find end of next path */
1189     if (penv == end || !*penv)
1190     {
1191       msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1192       return;
1193     }
1194     memcpy(curPath, penv, (end - penv) * sizeof(MSVCRT_wchar_t));
1195     if (curPath[end - penv] != '/' && curPath[end - penv] != '\\')
1196     {
1197       curPath[end - penv] = '\\';
1198       curPath[end - penv + 1] = '\0';
1199     }
1200     else
1201       curPath[end - penv] = '\0';
1202
1203     strcatW(curPath, file);
1204     TRACE("Checking for file %s\n", debugstr_w(curPath));
1205     if (GetFileAttributesW( curPath ) != INVALID_FILE_ATTRIBUTES)
1206     {
1207       strcpyW(buf, curPath);
1208       msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1209       return; /* Found */
1210     }
1211     penv = *end ? end + 1 : end;
1212   } while(1);
1213 }