files/dos_fs.c

   1 /*
   2  * DOS file system functions
   3  *
   4  * Copyright 1993 Erik Bos
   5  * Copyright 1996 Alexandre Julliard
   6  */
   7
   8 #include "config.h"
   9 #include <sys/types.h>
  10 #include <ctype.h>
  11 #include <dirent.h>
  12 #include <errno.h>
  13 #include <sys/errno.h>
  14 #include <fcntl.h>
  15 #include <string.h>
  16 #include <stdlib.h>
  17 #include <sys/stat.h>
  18 #include <sys/ioctl.h>
  19 #include <time.h>
  20 #include <unistd.h>
  21
  22 #include "windows.h"
  23 #include "winerror.h"
  24 #include "drive.h"
  25 #include "file.h"
  26 #include "heap.h"
  27 #include "msdos.h"
  28 #include "syslevel.h"
  29 #include "debug.h"
  30
  31 /* Define the VFAT ioctl to get both short and long file names */
  32 /* FIXME: is it possible to get this to work on other systems? */
  33 #ifdef linux
  34 #define VFAT_IOCTL_READDIR_BOTH  _IOR('r', 1, long)
  35 /* We want the real kernel dirent structure, not the libc one */
  36 typedef struct
  37 {
  38     long d_ino;
  39     long d_off;
  40     unsigned short d_reclen;
  41     char d_name[256];
  42 } KERNEL_DIRENT;
  43
  44 #else   /* linux */
  45 #undef VFAT_IOCTL_READDIR_BOTH  /* just in case... */
  46 #endif  /* linux */
  47
  48 /* Chars we don't want to see in DOS file names */
  49 #define INVALID_DOS_CHARS  "*?<>|\"+=,;[] \345"
  50
  51 static const DOS_DEVICE DOSFS_Devices[] =
  52 /* name, device flags (see Int 21/AX=0x4400) */
  53 {
  54     { "CON",            0xc0d3 },
  55     { "PRN",            0xa0c0 },
  56     { "NUL",            0x80c4 },
  57     { "AUX",            0x80c0 },
  58     { "LPT1",           0xa0c0 },
  59     { "LPT2",           0xa0c0 },
  60     { "LPT3",           0xa0c0 },
  61     { "LPT4",           0xc0d3 },
  62     { "COM1",           0x80c0 },
  63     { "COM2",           0x80c0 },
  64     { "COM3",           0x80c0 },
  65     { "COM4",           0x80c0 },
  66     { "SCSIMGR$",       0xc0c0 },
  67     { "HPSCAN",         0xc0c0 }
  68 };
  69
  70 #define GET_DRIVE(path) \
  71     (((path)[1] == ':') ? toupper((path)[0]) - 'A' : DOSFS_CurDrive)
  72
  73     /* DOS extended error status */
  74 WORD DOS_ExtendedError;
  75 BYTE DOS_ErrorClass;
  76 BYTE DOS_ErrorAction;
  77 BYTE DOS_ErrorLocus;
  78
  79 /* Directory info for DOSFS_ReadDir */
  80 typedef struct
  81 {
  82     DIR           *dir;
  83 #ifdef VFAT_IOCTL_READDIR_BOTH
  84     int            fd;
  85     char           short_name[12];
  86     KERNEL_DIRENT  dirent[2];
  87 #endif
  88 } DOS_DIR;
  89
  90 /* Info structure for FindFirstFile handle */
  91 typedef struct
  92 {
  93     LPSTR path;
  94     LPSTR long_mask;
  95     LPSTR short_mask;
  96     BYTE  attr;
  97     int   drive;
  98     int   cur_pos;
  99     DOS_DIR *dir;
 100 } FIND_FIRST_INFO;
 101
 102
 103
 104 /***********************************************************************
 105  *           DOSFS_ValidDOSName
 106  *
 107  * Return 1 if Unix file 'name' is also a valid MS-DOS name
 108  * (i.e. contains only valid DOS chars, lower-case only, fits in 8.3 format).
 109  * File name can be terminated by '\0', '\\' or '/'.
 110  */
 111 static int DOSFS_ValidDOSName( const char *name, int ignore_case )
 112 {
 113     static const char invalid_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" INVALID_DOS_CHARS;
 114     const char *p = name;
 115     const char *invalid = ignore_case ? (invalid_chars + 26) : invalid_chars;
 116     int len = 0;
 117
 118     if (*p == '.')
 119     {
 120         /* Check for "." and ".." */
 121         p++;
 122         if (*p == '.') p++;
 123         /* All other names beginning with '.' are invalid */
 124         return (IS_END_OF_NAME(*p));
 125     }
 126     while (!IS_END_OF_NAME(*p))
 127     {
 128         if (strchr( invalid, *p )) return 0;  /* Invalid char */
 129         if (*p == '.') break;  /* Start of the extension */
 130         if (++len > 8) return 0;  /* Name too long */
 131         p++;
 132     }
 133     if (*p != '.') return 1;  /* End of name */
 134     p++;
 135     if (IS_END_OF_NAME(*p)) return 0;  /* Empty extension not allowed */
 136     len = 0;
 137     while (!IS_END_OF_NAME(*p))
 138     {
 139         if (strchr( invalid, *p )) return 0;  /* Invalid char */
 140         if (*p == '.') return 0;  /* Second extension not allowed */
 141         if (++len > 3) return 0;  /* Extension too long */
 142         p++;
 143     }
 144     return 1;
 145 }
 146
 147
 148 /***********************************************************************
 149  *           DOSFS_ToDosFCBFormat
 150  *
 151  * Convert a file name to DOS FCB format (8+3 chars, padded with blanks),
 152  * expanding wild cards and converting to upper-case in the process.
 153  * File name can be terminated by '\0', '\\' or '/'.
 154  * Return FALSE if the name is not a valid DOS name.
 155  * 'buffer' must be at least 12 characters long.
 156  */
 157 BOOL32 DOSFS_ToDosFCBFormat( LPCSTR name, LPSTR buffer )
 158 {
 159     static const char invalid_chars[] = INVALID_DOS_CHARS;
 160     const char *p = name;
 161     int i;
 162
 163     /* Check for "." and ".." */
 164     if (*p == '.')
 165     {
 166         p++;
 167         strcpy( buffer, ".          " );
 168         if (*p == '.')
 169         {
 170             buffer[1] = '.';
 171             p++;
 172         }
 173         return (!*p || (*p == '/') || (*p == '\\'));
 174     }
 175
 176     for (i = 0; i < 8; i++)
 177     {
 178         switch(*p)
 179         {
 180         case '\0':
 181         case '\\':
 182         case '/':
 183         case '.':
 184             buffer[i] = ' ';
 185             break;
 186         case '?':
 187             p++;
 188             /* fall through */
 189         case '*':
 190             buffer[i] = '?';
 191             break;
 192         default:
 193             if (strchr( invalid_chars, *p )) return FALSE;
 194             buffer[i] = toupper(*p);
 195             p++;
 196             break;
 197         }
 198     }
 199
 200     if (*p == '*')
 201     {
 202         /* Skip all chars after wildcard up to first dot */
 203         while (*p && (*p != '/') && (*p != '\\') && (*p != '.')) p++;
 204     }
 205     else
 206     {
 207         /* Check if name too long */
 208         if (*p && (*p != '/') && (*p != '\\') && (*p != '.')) return FALSE;
 209     }
 210     if (*p == '.') p++;  /* Skip dot */
 211
 212     for (i = 8; i < 11; i++)
 213     {
 214         switch(*p)
 215         {
 216         case '\0':
 217         case '\\':
 218         case '/':
 219             buffer[i] = ' ';
 220             break;
 221         case '.':
 222             return FALSE;  /* Second extension not allowed */
 223         case '?':
 224             p++;
 225             /* fall through */
 226         case '*':
 227             buffer[i] = '?';
 228             break;
 229         default:
 230             if (strchr( invalid_chars, *p )) return FALSE;
 231             buffer[i] = toupper(*p);
 232             p++;
 233             break;
 234         }
 235     }
 236     buffer[11] = '\0';
 237     return TRUE;
 238 }
 239
 240
 241 /***********************************************************************
 242  *           DOSFS_ToDosDTAFormat
 243  *
 244  * Convert a file name from FCB to DTA format (name.ext, null-terminated)
 245  * converting to upper-case in the process.
 246  * File name can be terminated by '\0', '\\' or '/'.
 247  * 'buffer' must be at least 13 characters long.
 248  */
 249 static void DOSFS_ToDosDTAFormat( LPCSTR name, LPSTR buffer )
 250 {
 251     char *p;
 252
 253     memcpy( buffer, name, 8 );
 254     for (p = buffer + 8; (p > buffer) && (p[-1] == ' '); p--);
 255     *p++ = '.';
 256     memcpy( p, name + 8, 3 );
 257     for (p += 3; p[-1] == ' '; p--);
 258     if (p[-1] == '.') p--;
 259     *p = '\0';
 260 }
 261
 262
 263 /***********************************************************************
 264  *           DOSFS_MatchShort
 265  *
 266  * Check a DOS file name against a mask (both in FCB format).
 267  */
 268 static int DOSFS_MatchShort( const char *mask, const char *name )
 269 {
 270     int i;
 271     for (i = 11; i > 0; i--, mask++, name++)
 272         if ((*mask != '?') && (*mask != *name)) return 0;
 273     return 1;
 274 }
 275
 276
 277 /***********************************************************************
 278  *           DOSFS_MatchLong
 279  *
 280  * Check a long file name against a mask.
 281  */
 282 static int DOSFS_MatchLong( const char *mask, const char *name,
 283                             int case_sensitive )
 284 {
 285     if (!strcmp( mask, "*.*" )) return 1;
 286     while (*name && *mask)
 287     {
 288         if (*mask == '*')
 289         {
 290             mask++;
 291             while (*mask == '*') mask++;  /* Skip consecutive '*' */
 292             if (!*mask) return 1;
 293             if (case_sensitive) while (*name && (*name != *mask)) name++;
 294             else while (*name && (toupper(*name) != toupper(*mask))) name++;
 295             if (!*name) return 0;
 296         }
 297         else if (*mask != '?')
 298         {
 299             if (case_sensitive)
 300             {
 301                 if (*mask != *name) return 0;
 302             }
 303             else if (toupper(*mask) != toupper(*name)) return 0;
 304         }
 305         mask++;
 306         name++;
 307     }
 308     return (!*name && !*mask);
 309 }
 310
 311
 312 /***********************************************************************
 313  *           DOSFS_OpenDir
 314  */
 315 static DOS_DIR *DOSFS_OpenDir( LPCSTR path )
 316 {
 317     DOS_DIR *dir = HeapAlloc( SystemHeap, 0, sizeof(*dir) );
 318     if (!dir)
 319     {
 320         DOS_ERROR( ER_OutOfMemory, EC_OutOfResource, SA_Abort, EL_Memory );
 321         return NULL;
 322     }
 323
 324     /* Treat empty path as root directory. This simplifies path split into
 325        directory and mask in several other places */
 326     if (!*path) path = "/";
 327
 328 #ifdef VFAT_IOCTL_READDIR_BOTH
 329
 330     /* Check if the VFAT ioctl is supported on this directory */
 331
 332     if ((dir->fd = open( path, O_RDONLY )) != -1)
 333     {
 334         if (ioctl( dir->fd, VFAT_IOCTL_READDIR_BOTH, (long)dir->dirent ) == -1)
 335         {
 336             close( dir->fd );
 337             dir->fd = -1;
 338         }
 339         else
 340         {
 341             /* Set the file pointer back at the start of the directory */
 342             lseek( dir->fd, 0, SEEK_SET );
 343             dir->dir = NULL;
 344             return dir;
 345         }
 346     }
 347 #endif  /* VFAT_IOCTL_READDIR_BOTH */
 348
 349     /* Now use the standard opendir/readdir interface */
 350
 351     if (!(dir->dir = opendir( path )))
 352     {
 353         HeapFree( SystemHeap, 0, dir );
 354         return NULL;
 355     }
 356     return dir;
 357 }
 358
 359
 360 /***********************************************************************
 361  *           DOSFS_CloseDir
 362  */
 363 static void DOSFS_CloseDir( DOS_DIR *dir )
 364 {
 365 #ifdef VFAT_IOCTL_READDIR_BOTH
 366     if (dir->fd != -1) close( dir->fd );
 367 #endif  /* VFAT_IOCTL_READDIR_BOTH */
 368     if (dir->dir) closedir( dir->dir );
 369     HeapFree( SystemHeap, 0, dir );
 370 }
 371
 372
 373 /***********************************************************************
 374  *           DOSFS_ReadDir
 375  */
 376 static BOOL32 DOSFS_ReadDir( DOS_DIR *dir, LPCSTR *long_name,
 377                              LPCSTR *short_name )
 378 {
 379     struct dirent *dirent;
 380
 381 #ifdef VFAT_IOCTL_READDIR_BOTH
 382     if (dir->fd != -1)
 383     {
 384         if (ioctl( dir->fd, VFAT_IOCTL_READDIR_BOTH, (long)dir->dirent ) != -1) {
 385             if (!dir->dirent[0].d_reclen) return FALSE;
 386             if (!DOSFS_ToDosFCBFormat( dir->dirent[0].d_name, dir->short_name ))
 387                 dir->short_name[0] = '\0';
 388             *short_name = dir->short_name;
 389             if (dir->dirent[1].d_name[0]) *long_name = dir->dirent[1].d_name;
 390             else *long_name = dir->dirent[0].d_name;
 391             return TRUE;
 392         }
 393     }
 394 #endif  /* VFAT_IOCTL_READDIR_BOTH */
 395
 396     if (!(dirent = readdir( dir->dir ))) return FALSE;
 397     *long_name  = dirent->d_name;
 398     *short_name = NULL;
 399     return TRUE;
 400 }
 401
 402
 403 /***********************************************************************
 404  *           DOSFS_Hash
 405  *
 406  * Transform a Unix file name into a hashed DOS name. If the name is a valid
 407  * DOS name, it is converted to upper-case; otherwise it is replaced by a
 408  * hashed version that fits in 8.3 format.
 409  * File name can be terminated by '\0', '\\' or '/'.
 410  * 'buffer' must be at least 13 characters long.
 411  */
 412 static void DOSFS_Hash( LPCSTR name, LPSTR buffer, BOOL32 dir_format,
 413                         BOOL32 ignore_case )
 414 {
 415     static const char invalid_chars[] = INVALID_DOS_CHARS "~.";
 416     static const char hash_chars[32] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
 417
 418     const char *p, *ext;
 419     char *dst;
 420     unsigned short hash;
 421     int i;
 422
 423     if (dir_format) strcpy( buffer, "           " );
 424
 425     if (DOSFS_ValidDOSName( name, ignore_case ))
 426     {
 427         /* Check for '.' and '..' */
 428         if (*name == '.')
 429         {
 430             buffer[0] = '.';
 431             if (!dir_format) buffer[1] = buffer[2] = '\0';
 432             if (name[1] == '.') buffer[1] = '.';
 433             return;
 434         }
 435
 436         /* Simply copy the name, converting to uppercase */
 437
 438         for (dst = buffer; !IS_END_OF_NAME(*name) && (*name != '.'); name++)
 439             *dst++ = toupper(*name);
 440         if (*name == '.')
 441         {
 442             if (dir_format) dst = buffer + 8;
 443             else *dst++ = '.';
 444             for (name++; !IS_END_OF_NAME(*name); name++)
 445                 *dst++ = toupper(*name);
 446         }
 447         if (!dir_format) *dst = '\0';
 448         return;
 449     }
 450
 451     /* Compute the hash code of the file name */
 452     /* If you know something about hash functions, feel free to */
 453     /* insert a better algorithm here... */
 454     if (ignore_case)
 455     {
 456         for (p = name, hash = 0xbeef; !IS_END_OF_NAME(p[1]); p++)
 457             hash = (hash<<3) ^ (hash>>5) ^ tolower(*p) ^ (tolower(p[1]) << 8);
 458         hash = (hash<<3) ^ (hash>>5) ^ tolower(*p); /* Last character*/
 459     }
 460     else
 461     {
 462         for (p = name, hash = 0xbeef; !IS_END_OF_NAME(p[1]); p++)
 463             hash = (hash << 3) ^ (hash >> 5) ^ *p ^ (p[1] << 8);
 464         hash = (hash << 3) ^ (hash >> 5) ^ *p;  /* Last character */
 465     }
 466
 467     /* Find last dot for start of the extension */
 468     for (p = name+1, ext = NULL; !IS_END_OF_NAME(*p); p++)
 469         if (*p == '.') ext = p;
 470     if (ext && IS_END_OF_NAME(ext[1]))
 471         ext = NULL;  /* Empty extension ignored */
 472
 473     /* Copy first 4 chars, replacing invalid chars with '_' */
 474     for (i = 4, p = name, dst = buffer; i > 0; i--, p++)
 475     {
 476         if (IS_END_OF_NAME(*p) || (p == ext)) break;
 477         *dst++ = strchr( invalid_chars, *p ) ? '_' : toupper(*p);
 478     }
 479     /* Pad to 5 chars with '~' */
 480     while (i-- >= 0) *dst++ = '~';
 481
 482     /* Insert hash code converted to 3 ASCII chars */
 483     *dst++ = hash_chars[(hash >> 10) & 0x1f];
 484     *dst++ = hash_chars[(hash >> 5) & 0x1f];
 485     *dst++ = hash_chars[hash & 0x1f];
 486
 487     /* Copy the first 3 chars of the extension (if any) */
 488     if (ext)
 489     {
 490         if (!dir_format) *dst++ = '.';
 491         for (i = 3, ext++; (i > 0) && !IS_END_OF_NAME(*ext); i--, ext++)
 492             *dst++ = strchr( invalid_chars, *ext ) ? '_' : toupper(*ext);
 493     }
 494     if (!dir_format) *dst = '\0';
 495 }
 496
 497
 498 /***********************************************************************
 499  *           DOSFS_FindUnixName
 500  *
 501  * Find the Unix file name in a given directory that corresponds to
 502  * a file name (either in Unix or DOS format).
 503  * File name can be terminated by '\0', '\\' or '/'.
 504  * Return TRUE if OK, FALSE if no file name matches.
 505  *
 506  * 'long_buf' must be at least 'long_len' characters long. If the long name
 507  * turns out to be larger than that, the function returns FALSE.
 508  * 'short_buf' must be at least 13 characters long.
 509  */
 510 BOOL32 DOSFS_FindUnixName( LPCSTR path, LPCSTR name, LPSTR long_buf,
 511                            INT32 long_len, LPSTR short_buf, BOOL32 ignore_case)
 512 {
 513     DOS_DIR *dir;
 514     LPCSTR long_name, short_name;
 515     char dos_name[12], tmp_buf[13];
 516     BOOL32 ret;
 517
 518     const char *p = strchr( name, '/' );
 519     int len = p ? (int)(p - name) : strlen(name);
 520     if ((p = strchr( name, '\\' ))) len = MIN( (int)(p - name), len );
 521     if (long_len < len + 1) return FALSE;
 522
 523     TRACE(dosfs, "%s,%s\n", path, name );
 524
 525     if (!DOSFS_ToDosFCBFormat( name, dos_name )) dos_name[0] = '\0';
 526
 527     if (!(dir = DOSFS_OpenDir( path )))
 528     {
 529         WARN(dosfs, "(%s,%s): can't open dir: %s\n",
 530                        path, name, strerror(errno) );
 531         return FALSE;
 532     }
 533
 534     while ((ret = DOSFS_ReadDir( dir, &long_name, &short_name )))
 535     {
 536         /* Check against Unix name */
 537         if (len == strlen(long_name))
 538         {
 539             if (!ignore_case)
 540             {
 541                 if (!lstrncmp32A( long_name, name, len )) break;
 542             }
 543             else
 544             {
 545                 if (!lstrncmpi32A( long_name, name, len )) break;
 546             }
 547         }
 548         if (dos_name[0])
 549         {
 550             /* Check against hashed DOS name */
 551             if (!short_name)
 552             {
 553                 DOSFS_Hash( long_name, tmp_buf, TRUE, ignore_case );
 554                 short_name = tmp_buf;
 555             }
 556             if (!strcmp( dos_name, short_name )) break;
 557         }
 558     }
 559     if (ret)
 560     {
 561         if (long_buf) strcpy( long_buf, long_name );
 562         if (short_buf)
 563         {
 564             if (short_name)
 565                 DOSFS_ToDosDTAFormat( short_name, short_buf );
 566             else
 567                 DOSFS_Hash( long_name, short_buf, FALSE, ignore_case );
 568         }
 569         TRACE(dosfs, "(%s,%s) -> %s (%s)\n",
 570                      path, name, long_name, short_buf ? short_buf : "***");
 571     }
 572     else
 573         WARN(dosfs, "'%s' not found in '%s'\n", name, path);
 574     DOSFS_CloseDir( dir );
 575     return ret;
 576 }
 577
 578
 579 /***********************************************************************
 580  *           DOSFS_GetDevice
 581  *
 582  * Check if a DOS file name represents a DOS device and return the device.
 583  */
 584 const DOS_DEVICE *DOSFS_GetDevice( const char *name )
 585 {
 586     int i;
 587     const char *p;
 588
 589     if (!name) return NULL; /* if FILE_DupUnixHandle was used */
 590     if (name[0] && (name[1] == ':')) name += 2;
 591     if ((p = strrchr( name, '/' ))) name = p + 1;
 592     if ((p = strrchr( name, '\\' ))) name = p + 1;
 593     for (i = 0; i < sizeof(DOSFS_Devices)/sizeof(DOSFS_Devices[0]); i++)
 594     {
 595         const char *dev = DOSFS_Devices[i].name;
 596         if (!lstrncmpi32A( dev, name, strlen(dev) ))
 597         {
 598             p = name + strlen( dev );
 599             if (!*p || (*p == '.')) return &DOSFS_Devices[i];
 600         }
 601     }
 602     return NULL;
 603 }
 604
 605 /***********************************************************************
 606  *           DOSFS_OpenDevice
 607  *
 608  * Open a DOS device. This might not map 1:1 into the UNIX device concept.
 609  */
 610 HFILE32 DOSFS_OpenDevice( const char *name, int unixmode )
 611 {
 612     int i;
 613     const char *p;
 614     FILE_OBJECT *file;
 615     HFILE32 handle;
 616
 617     if (!name) return (HFILE32)NULL; /* if FILE_DupUnixHandle was used */
 618     if (name[0] && (name[1] == ':')) name += 2;
 619     if ((p = strrchr( name, '/' ))) name = p + 1;
 620     if ((p = strrchr( name, '\\' ))) name = p + 1;
 621     for (i = 0; i < sizeof(DOSFS_Devices)/sizeof(DOSFS_Devices[0]); i++)
 622     {
 623         const char *dev = DOSFS_Devices[i].name;
 624         if (!lstrncmpi32A( dev, name, strlen(dev) ))
 625         {
 626             p = name + strlen( dev );
 627             if (!*p || (*p == '.')) {
 628                 /* got it */
 629                 if (!strcmp(DOSFS_Devices[i].name,"NUL"))
 630                         return FILE_OpenUnixFile("/dev/null",unixmode);
 631                 if (!strcmp(DOSFS_Devices[i].name,"CON")) {
 632                         HFILE32 to_dup;
 633                         HFILE32 handle;
 634                         switch (unixmode) {
 635                         case O_RDONLY:
 636                                 to_dup = GetStdHandle( STD_INPUT_HANDLE );
 637                                 break;
 638                         case O_WRONLY:
 639                                 to_dup = GetStdHandle( STD_OUTPUT_HANDLE );
 640                                 break;
 641                         default:
 642                                 FIXME(dosfs,"can't open CON read/write\n");
 643                                 return HFILE_ERROR32;
 644                                 break;
 645                         }
 646                         if (!DuplicateHandle( GetCurrentProcess(), to_dup, GetCurrentProcess(),
 647                                               &handle, 0, FALSE, DUPLICATE_SAME_ACCESS ))
 648                             handle = HFILE_ERROR32;
 649                         return handle;
 650                 }
 651                 if (!strcmp(DOSFS_Devices[i].name,"SCSIMGR$")) {
 652                         if ((handle = FILE_Alloc( &file )) == INVALID_HANDLE_VALUE32)
 653                                 return HFILE_ERROR32;
 654                         else {
 655                                 file->unix_name = HEAP_strdupA( SystemHeap, 0, name );
 656                                 return handle;
 657                         }
 658                 }
 659                 if (!strcmp(DOSFS_Devices[i].name,"HPSCAN")) {
 660                         if ((handle = FILE_Alloc( &file )) == INVALID_HANDLE_VALUE32)
 661                                 return HFILE_ERROR32;
 662                         else {
 663                                 file->unix_name = HEAP_strdupA( SystemHeap, 0, name );
 664                                 return handle;
 665                         }
 666                 }
 667                 FIXME(dosfs,"device open %s not supported (yet)\n",DOSFS_Devices[i].name);
 668                 return HFILE_ERROR32;
 669             }
 670         }
 671     }
 672     return HFILE_ERROR32;
 673 }
 674
 675
 676 /***********************************************************************
 677  *           DOSFS_GetPathDrive
 678  *
 679  * Get the drive specified by a given path name (DOS or Unix format).
 680  */
 681 static int DOSFS_GetPathDrive( const char **name )
 682 {
 683     int drive;
 684     const char *p = *name;
 685
 686     if (*p && (p[1] == ':'))
 687     {
 688         drive = toupper(*p) - 'A';
 689         *name += 2;
 690     }
 691     else if (*p == '/') /* Absolute Unix path? */
 692     {
 693         if ((drive = DRIVE_FindDriveRoot( name )) == -1)
 694         {
 695             MSG("Warning: %s not accessible from a DOS drive\n", *name );
 696             /* Assume it really was a DOS name */
 697             drive = DRIVE_GetCurrentDrive();
 698         }
 699     }
 700     else drive = DRIVE_GetCurrentDrive();
 701
 702     if (!DRIVE_IsValid(drive))
 703     {
 704         DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
 705         return -1;
 706     }
 707     return drive;
 708 }
 709
 710
 711 /***********************************************************************
 712  *           DOSFS_GetFullName
 713  *
 714  * Convert a file name (DOS or mixed DOS/Unix format) to a valid
 715  * Unix name / short DOS name pair.
 716  * Return FALSE if one of the path components does not exist. The last path
 717  * component is only checked if 'check_last' is non-zero.
 718  * The buffers pointed to by 'long_buf' and 'short_buf' must be
 719  * at least MAX_PATHNAME_LEN long.
 720  */
 721 BOOL32 DOSFS_GetFullName( LPCSTR name, BOOL32 check_last, DOS_FULL_NAME *full )
 722 {
 723     BOOL32 found;
 724     UINT32 flags;
 725     char *p_l, *p_s, *root;
 726
 727     TRACE(dosfs, "%s (last=%d)\n",
 728                    name, check_last );
 729
 730     if ((full->drive = DOSFS_GetPathDrive( &name )) == -1) return FALSE;
 731     flags = DRIVE_GetFlags( full->drive );
 732
 733     lstrcpyn32A( full->long_name, DRIVE_GetRoot( full->drive ),
 734                  sizeof(full->long_name) );
 735     if (full->long_name[1]) root = full->long_name + strlen(full->long_name);
 736     else root = full->long_name;  /* root directory */
 737
 738     strcpy( full->short_name, "A:\\" );
 739     full->short_name[0] += full->drive;
 740
 741     if ((*name == '\\') || (*name == '/'))  /* Absolute path */
 742     {
 743         while ((*name == '\\') || (*name == '/')) name++;
 744     }
 745     else  /* Relative path */
 746     {
 747         lstrcpyn32A( root + 1, DRIVE_GetUnixCwd( full->drive ),
 748                      sizeof(full->long_name) - (root - full->long_name) - 1 );
 749         if (root[1]) *root = '/';
 750         lstrcpyn32A( full->short_name + 3, DRIVE_GetDosCwd( full->drive ),
 751                      sizeof(full->short_name) - 3 );
 752     }
 753
 754     p_l = full->long_name[1] ? full->long_name + strlen(full->long_name)
 755                              : full->long_name;
 756     p_s = full->short_name[3] ? full->short_name + strlen(full->short_name)
 757                               : full->short_name + 2;
 758     found = TRUE;
 759
 760     while (*name && found)
 761     {
 762         /* Check for '.' and '..' */
 763
 764         if (*name == '.')
 765         {
 766             if (IS_END_OF_NAME(name[1]))
 767             {
 768                 name++;
 769                 while ((*name == '\\') || (*name == '/')) name++;
 770                 continue;
 771             }
 772             else if ((name[1] == '.') && IS_END_OF_NAME(name[2]))
 773             {
 774                 name += 2;
 775                 while ((*name == '\\') || (*name == '/')) name++;
 776                 while ((p_l > root) && (*p_l != '/')) p_l--;
 777                 while ((p_s > full->short_name + 2) && (*p_s != '\\')) p_s--;
 778                 *p_l = *p_s = '\0';  /* Remove trailing separator */
 779                 continue;
 780             }
 781         }
 782
 783         /* Make sure buffers are large enough */
 784
 785         if ((p_s >= full->short_name + sizeof(full->short_name) - 14) ||
 786             (p_l >= full->long_name + sizeof(full->long_name) - 1))
 787         {
 788             DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
 789             return FALSE;
 790         }
 791
 792         /* Get the long and short name matching the file name */
 793
 794         if ((found = DOSFS_FindUnixName( full->long_name, name, p_l + 1,
 795                          sizeof(full->long_name) - (p_l - full->long_name) - 1,
 796                          p_s + 1, !(flags & DRIVE_CASE_SENSITIVE) )))
 797         {
 798             *p_l++ = '/';
 799             p_l   += strlen(p_l);
 800             *p_s++ = '\\';
 801             p_s   += strlen(p_s);
 802             while (!IS_END_OF_NAME(*name)) name++;
 803         }
 804         else if (!check_last)
 805         {
 806             *p_l++ = '/';
 807             *p_s++ = '\\';
 808             while (!IS_END_OF_NAME(*name) &&
 809                    (p_s < full->short_name + sizeof(full->short_name) - 1) &&
 810                    (p_l < full->long_name + sizeof(full->long_name) - 1))
 811             {
 812                 *p_s++ = tolower(*name);
 813                 /* If the drive is case-sensitive we want to create new */
 814                 /* files in lower-case otherwise we can't reopen them   */
 815                 /* under the same short name. */
 816                 if (flags & DRIVE_CASE_SENSITIVE) *p_l++ = tolower(*name);
 817                 else *p_l++ = *name;
 818                 name++;
 819             }
 820             *p_l = *p_s = '\0';
 821         }
 822         while ((*name == '\\') || (*name == '/')) name++;
 823     }
 824
 825     if (!found)
 826     {
 827         if (check_last)
 828         {
 829             DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 830             return FALSE;
 831         }
 832         if (*name)  /* Not last */
 833         {
 834             DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
 835             return FALSE;
 836         }
 837     }
 838     if (!full->long_name[0]) strcpy( full->long_name, "/" );
 839     if (!full->short_name[2]) strcpy( full->short_name + 2, "\\" );
 840     TRACE(dosfs, "returning %s = %s\n",
 841                    full->long_name, full->short_name );
 842     return TRUE;
 843 }
 844
 845
 846 /***********************************************************************
 847  *           GetShortPathName32A   (KERNEL32.271)
 848  */
 849 DWORD WINAPI GetShortPathName32A( LPCSTR longpath, LPSTR shortpath,
 850                                   DWORD shortlen )
 851 {
 852     DOS_FULL_NAME full_name;
 853
 854     /* FIXME: is it correct to always return a fully qualified short path? */
 855     if (!DOSFS_GetFullName( longpath, TRUE, &full_name )) return 0;
 856     lstrcpyn32A( shortpath, full_name.short_name, shortlen );
 857     return strlen( full_name.short_name );
 858 }
 859
 860
 861 /***********************************************************************
 862  *           GetShortPathName32W   (KERNEL32.272)
 863  */
 864 DWORD WINAPI GetShortPathName32W( LPCWSTR longpath, LPWSTR shortpath,
 865                                   DWORD shortlen )
 866 {
 867     DOS_FULL_NAME full_name;
 868     DWORD ret = 0;
 869     LPSTR longpathA = HEAP_strdupWtoA( GetProcessHeap(), 0, longpath );
 870
 871     /* FIXME: is it correct to always return a fully qualified short path? */
 872     if (DOSFS_GetFullName( longpathA, TRUE, &full_name ))
 873     {
 874         ret = strlen( full_name.short_name );
 875         lstrcpynAtoW( shortpath, full_name.short_name, shortlen );
 876     }
 877     HeapFree( GetProcessHeap(), 0, longpathA );
 878     return ret;
 879 }
 880
 881
 882 /***********************************************************************
 883  *           GetLongPathName32A   (KERNEL32.xxx)
 884  */
 885 DWORD WINAPI GetLongPathName32A( LPCSTR shortpath, LPSTR longpath,
 886                                   DWORD longlen )
 887 {
 888     DOS_FULL_NAME full_name;
 889
 890     /* FIXME: Is it correct to return a UNIX style path here? */
 891     if (!DOSFS_GetFullName( shortpath, TRUE, &full_name )) return 0;
 892     lstrcpyn32A( longpath, full_name.long_name, longlen );
 893     return strlen( full_name.long_name );
 894 }
 895
 896
 897 /***********************************************************************
 898  *           GetLongPathName32W   (KERNEL32.269)
 899  */
 900 DWORD WINAPI GetLongPathName32W( LPCWSTR shortpath, LPWSTR longpath,
 901                                   DWORD longlen )
 902 {
 903     DOS_FULL_NAME full_name;
 904     DWORD ret = 0;
 905     LPSTR shortpathA = HEAP_strdupWtoA( GetProcessHeap(), 0, shortpath );
 906
 907     /* FIXME: is it correct to always return a fully qualified short path? */
 908     if (DOSFS_GetFullName( shortpathA, TRUE, &full_name ))
 909     {
 910         ret = strlen( full_name.short_name );
 911         lstrcpynAtoW( longpath, full_name.long_name, longlen );
 912     }
 913     HeapFree( GetProcessHeap(), 0, shortpathA );
 914     return ret;
 915 }
 916
 917
 918 /***********************************************************************
 919  *           DOSFS_DoGetFullPathName
 920  *
 921  * Implementation of GetFullPathName32A/W.
 922  */
 923 static DWORD DOSFS_DoGetFullPathName( LPCSTR name, DWORD len, LPSTR result,
 924                                       BOOL32 unicode )
 925 {
 926     char buffer[MAX_PATHNAME_LEN];
 927     int drive;
 928     char *p;
 929
 930     TRACE(dosfs, "converting %s\n", name );
 931
 932     if (!name || !result) return 0;
 933
 934     if ((drive = DOSFS_GetPathDrive( &name )) == -1) return 0;
 935     p = buffer;
 936     *p++ = 'A' + drive;
 937     *p++ = ':';
 938     if (IS_END_OF_NAME(*name) && (*name))  /* Absolute path */
 939     {
 940         while ((*name == '\\') || (*name == '/')) name++;
 941     }
 942     else  /* Relative path or empty path */
 943     {
 944         *p++ = '\\';
 945         lstrcpyn32A( p, DRIVE_GetDosCwd(drive), sizeof(buffer) - 3 );
 946         if (*p) p += strlen(p); else p--;
 947     }
 948     if (!*name) /* empty path */
 949       *p++ = '\\';
 950     *p = '\0';
 951
 952     while (*name)
 953     {
 954         if (*name == '.')
 955         {
 956             if (IS_END_OF_NAME(name[1]))
 957             {
 958                 name++;
 959                 while ((*name == '\\') || (*name == '/')) name++;
 960                 continue;
 961             }
 962             else if ((name[1] == '.') && IS_END_OF_NAME(name[2]))
 963             {
 964                 name += 2;
 965                 while ((*name == '\\') || (*name == '/')) name++;
 966                 while ((p > buffer + 2) && (*p != '\\')) p--;
 967                 *p = '\0';  /* Remove trailing separator */
 968                 continue;
 969             }
 970         }
 971         if (p >= buffer + sizeof(buffer) - 1)
 972         {
 973             DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
 974             return 0;
 975         }
 976         *p++ = '\\';
 977         while (!IS_END_OF_NAME(*name) && (p < buffer + sizeof(buffer) - 1))
 978             *p++ = *name++;
 979         *p = '\0';
 980         while ((*name == '\\') || (*name == '/')) name++;
 981     }
 982
 983     if (!buffer[2])
 984     {
 985         buffer[2] = '\\';
 986         buffer[3] = '\0';
 987     }
 988     if (!(DRIVE_GetFlags(drive) & DRIVE_CASE_PRESERVING))
 989         CharUpper32A( buffer );
 990
 991     if (unicode) lstrcpynAtoW( (LPWSTR)result, buffer, len );
 992     else lstrcpyn32A( result, buffer, len );
 993
 994     TRACE(dosfs, "returning %s\n", buffer );
 995     return strlen(buffer);
 996 }
 997
 998
 999 /***********************************************************************
1000  *           GetFullPathName32A   (KERNEL32.272)
1001  */
1002 DWORD WINAPI GetFullPathName32A( LPCSTR name, DWORD len, LPSTR buffer,
1003                                  LPSTR *lastpart )
1004 {
1005     DWORD ret = DOSFS_DoGetFullPathName( name, len, buffer, FALSE );
1006     if (ret && lastpart)
1007     {
1008         LPSTR p = buffer + strlen(buffer);
1009         while ((p > buffer + 2) && (*p != '\\')) p--;
1010         *lastpart = p + 1;
1011     }
1012     return ret;
1013 }
1014
1015
1016 /***********************************************************************
1017  *           GetFullPathName32W   (KERNEL32.273)
1018  */
1019 DWORD WINAPI GetFullPathName32W( LPCWSTR name, DWORD len, LPWSTR buffer,
1020                                  LPWSTR *lastpart )
1021 {
1022     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
1023     DWORD ret = DOSFS_DoGetFullPathName( nameA, len, (LPSTR)buffer, TRUE );
1024     HeapFree( GetProcessHeap(), 0, nameA );
1025     if (ret && lastpart)
1026     {
1027         LPWSTR p = buffer + lstrlen32W(buffer);
1028         while ((p > buffer + 2) && (*p != '\\')) p--;
1029         *lastpart = p + 1;
1030     }
1031     return ret;
1032 }
1033
1034 /***********************************************************************
1035  *           DOSFS_FindNextEx
1036  */
1037 static int DOSFS_FindNextEx( FIND_FIRST_INFO *info, WIN32_FIND_DATA32A *entry )
1038 {
1039     BYTE attr = info->attr | FA_UNUSED | FA_ARCHIVE | FA_RDONLY;
1040     UINT32 flags = DRIVE_GetFlags( info->drive );
1041     char *p, buffer[MAX_PATHNAME_LEN];
1042     const char *drive_path;
1043     int drive_root;
1044     LPCSTR long_name, short_name;
1045     BY_HANDLE_FILE_INFORMATION fileinfo;
1046     char dos_name[13];
1047
1048     if ((info->attr & ~(FA_UNUSED | FA_ARCHIVE | FA_RDONLY)) == FA_LABEL)
1049     {
1050         if (info->cur_pos) return 0;
1051         entry->dwFileAttributes  = FILE_ATTRIBUTE_LABEL;
1052         DOSFS_UnixTimeToFileTime( (time_t)0, &entry->ftCreationTime, 0 );
1053         DOSFS_UnixTimeToFileTime( (time_t)0, &entry->ftLastAccessTime, 0 );
1054         DOSFS_UnixTimeToFileTime( (time_t)0, &entry->ftLastWriteTime, 0 );
1055         entry->nFileSizeHigh     = 0;
1056         entry->nFileSizeLow      = 0;
1057         entry->dwReserved0       = 0;
1058         entry->dwReserved1       = 0;
1059         DOSFS_ToDosDTAFormat( DRIVE_GetLabel( info->drive ), entry->cFileName );
1060         strcpy( entry->cAlternateFileName, entry->cFileName );
1061         info->cur_pos++;
1062         return 1;
1063     }
1064
1065     drive_path = info->path + strlen(DRIVE_GetRoot( info->drive ));
1066     while ((*drive_path == '/') || (*drive_path == '\\')) drive_path++;
1067     drive_root = !*drive_path;
1068
1069     lstrcpyn32A( buffer, info->path, sizeof(buffer) - 1 );
1070     strcat( buffer, "/" );
1071     p = buffer + strlen(buffer);
1072
1073     while (DOSFS_ReadDir( info->dir, &long_name, &short_name ))
1074     {
1075         info->cur_pos++;
1076
1077         /* Don't return '.' and '..' in the root of the drive */
1078         if (drive_root && (long_name[0] == '.') &&
1079             (!long_name[1] || ((long_name[1] == '.') && !long_name[2])))
1080             continue;
1081
1082         /* Check the long mask */
1083
1084         if (info->long_mask)
1085         {
1086             if (!DOSFS_MatchLong( info->long_mask, long_name,
1087                                   flags & DRIVE_CASE_SENSITIVE )) continue;
1088         }
1089
1090         /* Check the short mask */
1091
1092         if (info->short_mask)
1093         {
1094             if (!short_name)
1095             {
1096                 DOSFS_Hash( long_name, dos_name, TRUE,
1097                             !(flags & DRIVE_CASE_SENSITIVE) );
1098                 short_name = dos_name;
1099             }
1100             if (!DOSFS_MatchShort( info->short_mask, short_name )) continue;
1101         }
1102
1103         /* Check the file attributes */
1104
1105         lstrcpyn32A( p, long_name, sizeof(buffer) - (int)(p - buffer) );
1106         if (!FILE_Stat( buffer, &fileinfo ))
1107         {
1108             WARN(dosfs, "can't stat %s\n", buffer);
1109             continue;
1110         }
1111         if (fileinfo.dwFileAttributes & ~attr) continue;
1112
1113         /* We now have a matching entry; fill the result and return */
1114
1115         entry->dwFileAttributes = fileinfo.dwFileAttributes;
1116         entry->ftCreationTime   = fileinfo.ftCreationTime;
1117         entry->ftLastAccessTime = fileinfo.ftLastAccessTime;
1118         entry->ftLastWriteTime  = fileinfo.ftLastWriteTime;
1119         entry->nFileSizeHigh    = fileinfo.nFileSizeHigh;
1120         entry->nFileSizeLow     = fileinfo.nFileSizeLow;
1121
1122         if (short_name)
1123             DOSFS_ToDosDTAFormat( short_name, entry->cAlternateFileName );
1124         else
1125             DOSFS_Hash( long_name, entry->cAlternateFileName, FALSE,
1126                         !(flags & DRIVE_CASE_SENSITIVE) );
1127
1128         lstrcpyn32A( entry->cFileName, long_name, sizeof(entry->cFileName) );
1129         if (!(flags & DRIVE_CASE_PRESERVING)) CharLower32A( entry->cFileName );
1130         TRACE(dosfs, "returning %s (%s) %02lx %ld\n",
1131                        entry->cFileName, entry->cAlternateFileName,
1132                        entry->dwFileAttributes, entry->nFileSizeLow );
1133         return 1;
1134     }
1135     return 0;  /* End of directory */
1136 }
1137
1138 /***********************************************************************
1139  *           DOSFS_FindNext
1140  *
1141  * Find the next matching file. Return the number of entries read to find
1142  * the matching one, or 0 if no more entries.
1143  * 'short_mask' is the 8.3 mask (in FCB format), 'long_mask' is the long
1144  * file name mask. Either or both can be NULL.
1145  *
1146  * NOTE: This is supposed to be only called by the int21 emulation
1147  *       routines. Thus, we should own the Win16Mutex anyway.
1148  *       Nevertheless, we explicitly enter it to ensure the static
1149  *       directory cache is protected.
1150  */
1151 int DOSFS_FindNext( const char *path, const char *short_mask,
1152                     const char *long_mask, int drive, BYTE attr,
1153                     int skip, WIN32_FIND_DATA32A *entry )
1154 {
1155     static FIND_FIRST_INFO info = { NULL };
1156     LPCSTR short_name, long_name;
1157     int count;
1158
1159     SYSLEVEL_EnterWin16Lock();
1160
1161     /* Check the cached directory */
1162     if (!(info.dir && info.path == path && info.short_mask == short_mask
1163                    && info.long_mask == long_mask && info.drive == drive
1164                    && info.attr == attr && info.cur_pos <= skip))
1165     {
1166         /* Not in the cache, open it anew */
1167         if (info.dir) DOSFS_CloseDir( info.dir );
1168
1169         info.path = (LPSTR)path;
1170         info.long_mask = (LPSTR)long_mask;
1171         info.short_mask = (LPSTR)short_mask;
1172         info.attr = attr;
1173         info.drive = drive;
1174         info.cur_pos = 0;
1175         info.dir = DOSFS_OpenDir( info.path );
1176     }
1177
1178     /* Skip to desired position */
1179     while (info.cur_pos < skip)
1180         if (info.dir && DOSFS_ReadDir( info.dir, &long_name, &short_name ))
1181             info.cur_pos++;
1182         else
1183             break;
1184
1185     if (info.dir && info.cur_pos == skip && DOSFS_FindNextEx( &info, entry ))
1186         count = info.cur_pos - skip;
1187     else
1188         count = 0;
1189
1190     if (!count)
1191     {
1192         if (info.dir) DOSFS_CloseDir( info.dir );
1193         memset( &info, '\0', sizeof(info) );
1194     }
1195
1196     SYSLEVEL_LeaveWin16Lock();
1197
1198     return count;
1199 }
1200
1201
1202
1203 /*************************************************************************
1204  *           FindFirstFile16   (KERNEL.413)
1205  */
1206 HANDLE16 WINAPI FindFirstFile16( LPCSTR path, WIN32_FIND_DATA32A *data )
1207 {
1208     DOS_FULL_NAME full_name;
1209     HGLOBAL16 handle;
1210     FIND_FIRST_INFO *info;
1211
1212     if (!path) return 0;
1213     if (!DOSFS_GetFullName( path, FALSE, &full_name ))
1214         return INVALID_HANDLE_VALUE16;
1215     if (!(handle = GlobalAlloc16( GMEM_MOVEABLE, sizeof(FIND_FIRST_INFO) )))
1216         return INVALID_HANDLE_VALUE16;
1217     info = (FIND_FIRST_INFO *)GlobalLock16( handle );
1218     info->path = HEAP_strdupA( SystemHeap, 0, full_name.long_name );
1219     info->long_mask = strrchr( info->path, '/' );
1220     *(info->long_mask++) = '\0';
1221     info->short_mask = NULL;
1222     info->attr = 0xff;
1223     if (path[0] && (path[1] == ':')) info->drive = toupper(*path) - 'A';
1224     else info->drive = DRIVE_GetCurrentDrive();
1225     info->cur_pos = 0;
1226
1227     info->dir = DOSFS_OpenDir( info->path );
1228
1229     GlobalUnlock16( handle );
1230     if (!FindNextFile16( handle, data ))
1231     {
1232         FindClose16( handle );
1233         DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1234         return INVALID_HANDLE_VALUE16;
1235     }
1236     return handle;
1237 }
1238
1239
1240 /*************************************************************************
1241  *           FindFirstFile32A   (KERNEL32.123)
1242  */
1243 HANDLE32 WINAPI FindFirstFile32A( LPCSTR path, WIN32_FIND_DATA32A *data )
1244 {
1245     HANDLE32 handle = FindFirstFile16( path, data );
1246     if (handle == INVALID_HANDLE_VALUE16) return INVALID_HANDLE_VALUE32;
1247     return handle;
1248 }
1249
1250
1251 /*************************************************************************
1252  *           FindFirstFile32W   (KERNEL32.124)
1253  */
1254 HANDLE32 WINAPI FindFirstFile32W( LPCWSTR path, WIN32_FIND_DATA32W *data )
1255 {
1256     WIN32_FIND_DATA32A dataA;
1257     LPSTR pathA = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
1258     HANDLE32 handle = FindFirstFile32A( pathA, &dataA );
1259     HeapFree( GetProcessHeap(), 0, pathA );
1260     if (handle != INVALID_HANDLE_VALUE32)
1261     {
1262         data->dwFileAttributes = dataA.dwFileAttributes;
1263         data->ftCreationTime   = dataA.ftCreationTime;
1264         data->ftLastAccessTime = dataA.ftLastAccessTime;
1265         data->ftLastWriteTime  = dataA.ftLastWriteTime;
1266         data->nFileSizeHigh    = dataA.nFileSizeHigh;
1267         data->nFileSizeLow     = dataA.nFileSizeLow;
1268         lstrcpyAtoW( data->cFileName, dataA.cFileName );
1269         lstrcpyAtoW( data->cAlternateFileName, dataA.cAlternateFileName );
1270     }
1271     return handle;
1272 }
1273
1274
1275 /*************************************************************************
1276  *           FindNextFile16   (KERNEL.414)
1277  */
1278 BOOL16 WINAPI FindNextFile16( HANDLE16 handle, WIN32_FIND_DATA32A *data )
1279 {
1280     FIND_FIRST_INFO *info;
1281
1282     if (!(info = (FIND_FIRST_INFO *)GlobalLock16( handle )))
1283     {
1284         DOS_ERROR( ER_InvalidHandle, EC_ProgramError, SA_Abort, EL_Disk );
1285         return FALSE;
1286     }
1287     GlobalUnlock16( handle );
1288     if (!info->path || !info->dir)
1289     {
1290         DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1291         return FALSE;
1292     }
1293     if (!DOSFS_FindNextEx( info, data ))
1294     {
1295         DOSFS_CloseDir( info->dir ); info->dir = NULL;
1296         HeapFree( SystemHeap, 0, info->path );
1297         info->path = info->long_mask = NULL;
1298         DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1299         return FALSE;
1300     }
1301     return TRUE;
1302 }
1303
1304
1305 /*************************************************************************
1306  *           FindNextFile32A   (KERNEL32.126)
1307  */
1308 BOOL32 WINAPI FindNextFile32A( HANDLE32 handle, WIN32_FIND_DATA32A *data )
1309 {
1310     return FindNextFile16( handle, data );
1311 }
1312
1313
1314 /*************************************************************************
1315  *           FindNextFile32W   (KERNEL32.127)
1316  */
1317 BOOL32 WINAPI FindNextFile32W( HANDLE32 handle, WIN32_FIND_DATA32W *data )
1318 {
1319     WIN32_FIND_DATA32A dataA;
1320     if (!FindNextFile32A( handle, &dataA )) return FALSE;
1321     data->dwFileAttributes = dataA.dwFileAttributes;
1322     data->ftCreationTime   = dataA.ftCreationTime;
1323     data->ftLastAccessTime = dataA.ftLastAccessTime;
1324     data->ftLastWriteTime  = dataA.ftLastWriteTime;
1325     data->nFileSizeHigh    = dataA.nFileSizeHigh;
1326     data->nFileSizeLow     = dataA.nFileSizeLow;
1327     lstrcpyAtoW( data->cFileName, dataA.cFileName );
1328     lstrcpyAtoW( data->cAlternateFileName, dataA.cAlternateFileName );
1329     return TRUE;
1330 }
1331
1332
1333 /*************************************************************************
1334  *           FindClose16   (KERNEL.415)
1335  */
1336 BOOL16 WINAPI FindClose16( HANDLE16 handle )
1337 {
1338     FIND_FIRST_INFO *info;
1339
1340     if ((handle == INVALID_HANDLE_VALUE16) ||
1341         !(info = (FIND_FIRST_INFO *)GlobalLock16( handle )))
1342     {
1343         DOS_ERROR( ER_InvalidHandle, EC_ProgramError, SA_Abort, EL_Disk );
1344         return FALSE;
1345     }
1346     if (info->dir) DOSFS_CloseDir( info->dir );
1347     if (info->path) HeapFree( SystemHeap, 0, info->path );
1348     GlobalUnlock16( handle );
1349     GlobalFree16( handle );
1350     return TRUE;
1351 }
1352
1353
1354 /*************************************************************************
1355  *           FindClose32   (KERNEL32.119)
1356  */
1357 BOOL32 WINAPI FindClose32( HANDLE32 handle )
1358 {
1359     return FindClose16( (HANDLE16)handle );
1360 }
1361
1362
1363 /***********************************************************************
1364  *           DOSFS_UnixTimeToFileTime
1365  *
1366  * Convert a Unix time to FILETIME format.
1367  * The FILETIME structure is a 64-bit value representing the number of
1368  * 100-nanosecond intervals since January 1, 1601, 0:00.
1369  * 'remainder' is the nonnegative number of 100-ns intervals
1370  * corresponding to the time fraction smaller than 1 second that
1371  * couldn't be stored in the time_t value.
1372  */
1373 void DOSFS_UnixTimeToFileTime( time_t unix_time, FILETIME *filetime,
1374                                DWORD remainder )
1375 {
1376     /* NOTES:
1377
1378        CONSTANTS:
1379        The time difference between 1 January 1601, 00:00:00 and
1380        1 January 1970, 00:00:00 is 369 years, plus the leap years
1381        from 1604 to 1968, excluding 1700, 1800, 1900.
1382        This makes (1968 - 1600) / 4 - 3 = 89 leap days, and a total
1383        of 134774 days.
1384
1385        Any day in that period had 24 * 60 * 60 = 86400 seconds.
1386
1387        The time difference is 134774 * 86400 * 10000000, which can be written
1388        116444736000000000
1389        27111902 * 2^32 + 3577643008
1390        413 * 2^48 + 45534 * 2^32 + 54590 * 2^16 + 32768
1391
1392        If you find that these constants are buggy, please change them in all
1393        instances in both conversion functions.
1394
1395        VERSIONS:
1396        There are two versions, one of them uses long long variables and
1397        is presumably faster but not ISO C. The other one uses standard C
1398        data types and operations but relies on the assumption that negative
1399        numbers are stored as 2's complement (-1 is 0xffff....). If this
1400        assumption is violated, dates before 1970 will not convert correctly.
1401        This should however work on any reasonable architecture where WINE
1402        will run.
1403
1404        DETAILS:
1405
1406        Take care not to remove the casts. I have tested these functions
1407        (in both versions) for a lot of numbers. I would be interested in
1408        results on other compilers than GCC.
1409
1410        The operations have been designed to account for the possibility
1411        of 64-bit time_t in future UNICES. Even the versions without
1412        internal long long numbers will work if time_t only is 64 bit.
1413        A 32-bit shift, which was necessary for that operation, turned out
1414        not to work correctly in GCC, besides giving the warning. So I
1415        used a double 16-bit shift instead. Numbers are in the ISO version
1416        represented by three limbs, the most significant with 32 bit, the
1417        other two with 16 bit each.
1418
1419        As the modulo-operator % is not well-defined for negative numbers,
1420        negative divisors have been avoided in DOSFS_FileTimeToUnixTime.
1421
1422        There might be quicker ways to do this in C. Certainly so in
1423        assembler.
1424
1425        Claus Fischer, fischer@iue.tuwien.ac.at
1426        */
1427
1428 #if (SIZEOF_LONG_LONG >= 8)
1429 #  define USE_LONG_LONG 1
1430 #else
1431 #  define USE_LONG_LONG 0
1432 #endif
1433
1434 #if USE_LONG_LONG               /* gcc supports long long type */
1435
1436     long long int t = unix_time;
1437     t *= 10000000;
1438     t += 116444736000000000LL;
1439     t += remainder;
1440     filetime->dwLowDateTime  = (UINT32)t;
1441     filetime->dwHighDateTime = (UINT32)(t >> 32);
1442
1443 #else  /* ISO version */
1444
1445     UINT32 a0;                  /* 16 bit, low    bits */
1446     UINT32 a1;                  /* 16 bit, medium bits */
1447     UINT32 a2;                  /* 32 bit, high   bits */
1448
1449     /* Copy the unix time to a2/a1/a0 */
1450     a0 =  unix_time & 0xffff;
1451     a1 = (unix_time >> 16) & 0xffff;
1452     /* This is obsolete if unix_time is only 32 bits, but it does not hurt.
1453        Do not replace this by >> 32, it gives a compiler warning and it does
1454        not work. */
1455     a2 = (unix_time >= 0 ? (unix_time >> 16) >> 16 :
1456           ~((~unix_time >> 16) >> 16));
1457
1458     /* Multiply a by 10000000 (a = a2/a1/a0)
1459        Split the factor into 10000 * 1000 which are both less than 0xffff. */
1460     a0 *= 10000;
1461     a1 = a1 * 10000 + (a0 >> 16);
1462     a2 = a2 * 10000 + (a1 >> 16);
1463     a0 &= 0xffff;
1464     a1 &= 0xffff;
1465
1466     a0 *= 1000;
1467     a1 = a1 * 1000 + (a0 >> 16);
1468     a2 = a2 * 1000 + (a1 >> 16);
1469     a0 &= 0xffff;
1470     a1 &= 0xffff;
1471
1472     /* Add the time difference and the remainder */
1473     a0 += 32768 + (remainder & 0xffff);
1474     a1 += 54590 + (remainder >> 16   ) + (a0 >> 16);
1475     a2 += 27111902                     + (a1 >> 16);
1476     a0 &= 0xffff;
1477     a1 &= 0xffff;
1478
1479     /* Set filetime */
1480     filetime->dwLowDateTime  = (a1 << 16) + a0;
1481     filetime->dwHighDateTime = a2;
1482 #endif
1483 }
1484
1485
1486 /***********************************************************************
1487  *           DOSFS_FileTimeToUnixTime
1488  *
1489  * Convert a FILETIME format to Unix time.
1490  * If not NULL, 'remainder' contains the fractional part of the filetime,
1491  * in the range of [0..9999999] (even if time_t is negative).
1492  */
1493 time_t DOSFS_FileTimeToUnixTime( const FILETIME *filetime, DWORD *remainder )
1494 {
1495     /* Read the comment in the function DOSFS_UnixTimeToFileTime. */
1496 #if USE_LONG_LONG
1497
1498     long long int t = filetime->dwHighDateTime;
1499     t <<= 32;
1500     t += (UINT32)filetime->dwLowDateTime;
1501     t -= 116444736000000000LL;
1502     if (t < 0)
1503     {
1504         if (remainder) *remainder = 9999999 - (-t - 1) % 10000000;
1505         return -1 - ((-t - 1) / 10000000);
1506     }
1507     else
1508     {
1509         if (remainder) *remainder = t % 10000000;
1510         return t / 10000000;
1511     }
1512
1513 #else  /* ISO version */
1514
1515     UINT32 a0;                  /* 16 bit, low    bits */
1516     UINT32 a1;                  /* 16 bit, medium bits */
1517     UINT32 a2;                  /* 32 bit, high   bits */
1518     UINT32 r;                   /* remainder of division */
1519     unsigned int carry;         /* carry bit for subtraction */
1520     int negative;               /* whether a represents a negative value */
1521
1522     /* Copy the time values to a2/a1/a0 */
1523     a2 =  (UINT32)filetime->dwHighDateTime;
1524     a1 = ((UINT32)filetime->dwLowDateTime ) >> 16;
1525     a0 = ((UINT32)filetime->dwLowDateTime ) & 0xffff;
1526
1527     /* Subtract the time difference */
1528     if (a0 >= 32768           ) a0 -=             32768        , carry = 0;
1529     else                        a0 += (1 << 16) - 32768        , carry = 1;
1530
1531     if (a1 >= 54590    + carry) a1 -=             54590 + carry, carry = 0;
1532     else                        a1 += (1 << 16) - 54590 - carry, carry = 1;
1533
1534     a2 -= 27111902 + carry;
1535
1536     /* If a is negative, replace a by (-1-a) */
1537     negative = (a2 >= ((UINT32)1) << 31);
1538     if (negative)
1539     {
1540         /* Set a to -a - 1 (a is a2/a1/a0) */
1541         a0 = 0xffff - a0;
1542         a1 = 0xffff - a1;
1543         a2 = ~a2;
1544     }
1545
1546     /* Divide a by 10000000 (a = a2/a1/a0), put the rest into r.
1547        Split the divisor into 10000 * 1000 which are both less than 0xffff. */
1548     a1 += (a2 % 10000) << 16;
1549     a2 /=       10000;
1550     a0 += (a1 % 10000) << 16;
1551     a1 /=       10000;
1552     r   =  a0 % 10000;
1553     a0 /=       10000;
1554
1555     a1 += (a2 % 1000) << 16;
1556     a2 /=       1000;
1557     a0 += (a1 % 1000) << 16;
1558     a1 /=       1000;
1559     r  += (a0 % 1000) * 10000;
1560     a0 /=       1000;
1561
1562     /* If a was negative, replace a by (-1-a) and r by (9999999 - r) */
1563     if (negative)
1564     {
1565         /* Set a to -a - 1 (a is a2/a1/a0) */
1566         a0 = 0xffff - a0;
1567         a1 = 0xffff - a1;
1568         a2 = ~a2;
1569
1570         r  = 9999999 - r;
1571     }
1572
1573     if (remainder) *remainder = r;
1574
1575     /* Do not replace this by << 32, it gives a compiler warning and it does
1576        not work. */
1577     return ((((time_t)a2) << 16) << 16) + (a1 << 16) + a0;
1578 #endif
1579 }
1580
1581
1582 /***********************************************************************
1583  *           DosDateTimeToFileTime   (KERNEL32.76)
1584  */
1585 BOOL32 WINAPI DosDateTimeToFileTime( WORD fatdate, WORD fattime, LPFILETIME ft)
1586 {
1587     struct tm newtm;
1588
1589     newtm.tm_sec  = (fattime & 0x1f) * 2;
1590     newtm.tm_min  = (fattime >> 5) & 0x3f;
1591     newtm.tm_hour = (fattime >> 11);
1592     newtm.tm_mday = (fatdate & 0x1f);
1593     newtm.tm_mon  = ((fatdate >> 5) & 0x0f) - 1;
1594     newtm.tm_year = (fatdate >> 9) + 80;
1595     DOSFS_UnixTimeToFileTime( mktime( &newtm ), ft, 0 );
1596     return TRUE;
1597 }
1598
1599
1600 /***********************************************************************
1601  *           FileTimeToDosDateTime   (KERNEL32.111)
1602  */
1603 BOOL32 WINAPI FileTimeToDosDateTime( const FILETIME *ft, LPWORD fatdate,
1604                                      LPWORD fattime )
1605 {
1606     time_t unixtime = DOSFS_FileTimeToUnixTime( ft, NULL );
1607     struct tm *tm = localtime( &unixtime );
1608     if (fattime)
1609         *fattime = (tm->tm_hour << 11) + (tm->tm_min << 5) + (tm->tm_sec / 2);
1610     if (fatdate)
1611         *fatdate = ((tm->tm_year - 80) << 9) + ((tm->tm_mon + 1) << 5)
1612                    + tm->tm_mday;
1613     return TRUE;
1614 }
1615
1616
1617 /***********************************************************************
1618  *           LocalFileTimeToFileTime   (KERNEL32.373)
1619  */
1620 BOOL32 WINAPI LocalFileTimeToFileTime( const FILETIME *localft,
1621                                        LPFILETIME utcft )
1622 {
1623     struct tm *xtm;
1624     DWORD remainder;
1625
1626     /* convert from local to UTC. Perhaps not correct. FIXME */
1627     time_t unixtime = DOSFS_FileTimeToUnixTime( localft, &remainder );
1628     xtm = gmtime( &unixtime );
1629     DOSFS_UnixTimeToFileTime( mktime(xtm), utcft, remainder );
1630     return TRUE;
1631 }
1632
1633
1634 /***********************************************************************
1635  *           FileTimeToLocalFileTime   (KERNEL32.112)
1636  */
1637 BOOL32 WINAPI FileTimeToLocalFileTime( const FILETIME *utcft,
1638                                        LPFILETIME localft )
1639 {
1640     DWORD remainder;
1641     /* convert from UTC to local. Perhaps not correct. FIXME */
1642     time_t unixtime = DOSFS_FileTimeToUnixTime( utcft, &remainder );
1643 #ifdef HAVE_TIMEGM
1644     struct tm *xtm = localtime( &unixtime );
1645     time_t localtime;
1646
1647     localtime = timegm(xtm);
1648     DOSFS_UnixTimeToFileTime( localtime, localft, remainder );
1649
1650 #else
1651     struct tm *xtm,*gtm;
1652     time_t time1,time2;
1653
1654     xtm = localtime( &unixtime );
1655     gtm = gmtime( &unixtime );
1656     time1 = mktime(xtm);
1657     time2 = mktime(gtm);
1658     DOSFS_UnixTimeToFileTime( 2*time1-time2, localft, remainder );
1659 #endif
1660     return TRUE;
1661 }
1662
1663
1664 /***********************************************************************
1665  *           FileTimeToSystemTime   (KERNEL32.113)
1666  */
1667 BOOL32 WINAPI FileTimeToSystemTime( const FILETIME *ft, LPSYSTEMTIME syst )
1668 {
1669     struct tm *xtm;
1670     DWORD remainder;
1671     time_t xtime = DOSFS_FileTimeToUnixTime( ft, &remainder );
1672     xtm = gmtime(&xtime);
1673     syst->wYear         = xtm->tm_year+1900;
1674     syst->wMonth        = xtm->tm_mon + 1;
1675     syst->wDayOfWeek    = xtm->tm_wday;
1676     syst->wDay          = xtm->tm_mday;
1677     syst->wHour         = xtm->tm_hour;
1678     syst->wMinute       = xtm->tm_min;
1679     syst->wSecond       = xtm->tm_sec;
1680     syst->wMilliseconds = remainder / 10000;
1681     return TRUE;
1682 }
1683
1684 /***********************************************************************
1685  *           QueryDosDeviceA   (KERNEL32.413)
1686  *
1687  * returns array of strings terminated by \0, terminated by \0
1688  */
1689 DWORD WINAPI QueryDosDevice32A(LPCSTR devname,LPSTR target,DWORD bufsize)
1690 {
1691     LPSTR s;
1692     char  buffer[200];
1693
1694     TRACE(dosfs,"(%s,...)\n",devname?devname:"<null>");
1695     if (!devname) {
1696         /* return known MSDOS devices */
1697         lstrcpy32A(buffer,"CON COM1 COM2 LPT1 NUL ");
1698         while ((s=strchr(buffer,' ')))
1699                 *s='\0';
1700
1701         lstrcpyn32A(target,buffer,bufsize);
1702         return strlen(buffer);
1703     }
1704     lstrcpy32A(buffer,"\\DEV\\");
1705     lstrcat32A(buffer,devname);
1706     if ((s=strchr(buffer,':'))) *s='\0';
1707     lstrcpyn32A(target,buffer,bufsize);
1708     return strlen(buffer);
1709 }
1710
1711
1712 /***********************************************************************
1713  *           QueryDosDeviceW   (KERNEL32.414)
1714  *
1715  * returns array of strings terminated by \0, terminated by \0
1716  */
1717 DWORD WINAPI QueryDosDevice32W(LPCWSTR devname,LPWSTR target,DWORD bufsize)
1718 {
1719     LPSTR devnameA = devname?HEAP_strdupWtoA(GetProcessHeap(),0,devname):NULL;
1720     LPSTR targetA = (LPSTR)HEAP_xalloc(GetProcessHeap(),0,bufsize);
1721     DWORD ret = QueryDosDevice32A(devnameA,targetA,bufsize);
1722
1723     lstrcpynAtoW(target,targetA,bufsize);
1724     if (devnameA) HeapFree(GetProcessHeap(),0,devnameA);
1725     if (targetA) HeapFree(GetProcessHeap(),0,targetA);
1726     return ret;
1727 }
1728
1729
1730 /***********************************************************************
1731  *           SystemTimeToFileTime   (KERNEL32.526)
1732  */
1733 BOOL32 WINAPI SystemTimeToFileTime( const SYSTEMTIME *syst, LPFILETIME ft )
1734 {
1735 #ifdef HAVE_TIMEGM
1736     struct tm xtm;
1737     time_t utctime;
1738 #else
1739     struct tm xtm,*local_tm,*utc_tm;
1740     time_t localtim,utctime;
1741 #endif
1742
1743     xtm.tm_year = syst->wYear-1900;
1744     xtm.tm_mon  = syst->wMonth - 1;
1745     xtm.tm_wday = syst->wDayOfWeek;
1746     xtm.tm_mday = syst->wDay;
1747     xtm.tm_hour = syst->wHour;
1748     xtm.tm_min  = syst->wMinute;
1749     xtm.tm_sec  = syst->wSecond; /* this is UTC */
1750     xtm.tm_isdst = -1;
1751 #ifdef HAVE_TIMEGM
1752     utctime = timegm(&xtm);
1753     DOSFS_UnixTimeToFileTime( utctime, ft,
1754                               syst->wMilliseconds * 10000 );
1755 #else
1756     localtim = mktime(&xtm);    /* now we've got local time */
1757     local_tm = localtime(&localtim);
1758     utc_tm = gmtime(&localtim);
1759     utctime = mktime(utc_tm);
1760     DOSFS_UnixTimeToFileTime( 2*localtim -utctime, ft,
1761                               syst->wMilliseconds * 10000 );
1762 #endif
1763     return TRUE;
1764 }