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  * NOTES
 850  *  observed:
 851  *  longpath=NULL: LastError=ERROR_INVALID_PARAMETER, ret=0
 852  *  *longpath="" or invalid: LastError=ERROR_BAD_PATHNAME, ret=0
 853  */
 854 DWORD WINAPI GetShortPathName32A( LPCSTR longpath, LPSTR shortpath,
 855                                   DWORD shortlen )
 856 {
 857     DOS_FULL_NAME full_name;
 858
 859     if (!longpath)
 860     {
 861         SetLastError(ERROR_INVALID_PARAMETER);
 862         return 0;
 863     }
 864
 865     if (!longpath[0])
 866     {
 867         SetLastError(ERROR_BAD_PATHNAME);
 868         return 0;
 869     }
 870
 871     /* FIXME: is it correct to always return a fully qualified short path? */
 872     if (!DOSFS_GetFullName( longpath, TRUE, &full_name ))
 873     {
 874         SetLastError(ERROR_BAD_PATHNAME);
 875         return 0;
 876     }
 877     lstrcpyn32A( shortpath, full_name.short_name, shortlen );
 878     return strlen( full_name.short_name );
 879 }
 880
 881
 882 /***********************************************************************
 883  *           GetShortPathName32W   (KERNEL32.272)
 884  */
 885 DWORD WINAPI GetShortPathName32W( LPCWSTR longpath, LPWSTR shortpath,
 886                                   DWORD shortlen )
 887 {
 888     DOS_FULL_NAME full_name;
 889     LPSTR longpathA ;
 890     DWORD ret = 0;
 891
 892     if (!longpath)
 893     { SetLastError(ERROR_INVALID_PARAMETER);
 894       return 0;
 895     }
 896
 897     if (!longpath[0])
 898     { SetLastError(ERROR_BAD_PATHNAME);
 899       return 0;
 900     }
 901
 902
 903     longpathA = HEAP_strdupWtoA( GetProcessHeap(), 0, longpath );
 904
 905     /* FIXME: is it correct to always return a fully qualified short path? */
 906     if (DOSFS_GetFullName( longpathA, TRUE, &full_name ))
 907     {
 908         ret = strlen( full_name.short_name );
 909         lstrcpynAtoW( shortpath, full_name.short_name, shortlen );
 910     }
 911
 912     SetLastError(ERROR_BAD_PATHNAME);
 913     HeapFree( GetProcessHeap(), 0, longpathA );
 914     return 0;
 915 }
 916
 917
 918 /***********************************************************************
 919  *           GetLongPathName32A   (KERNEL32.xxx)
 920  */
 921 DWORD WINAPI GetLongPathName32A( LPCSTR shortpath, LPSTR longpath,
 922                                   DWORD longlen )
 923 {
 924     DOS_FULL_NAME full_name;
 925     char *p;
 926     char *longfilename;
 927     DWORD shortpathlen;
 928
 929     if (!DOSFS_GetFullName( shortpath, TRUE, &full_name )) return 0;
 930     lstrcpyn32A( longpath, full_name.short_name, longlen );
 931     /* Do some hackery to get the long filename.
 932      * FIXME: Would be better if it returned the
 933      * long version of the directories too
 934      */
 935     longfilename = strrchr(full_name.long_name, '/')+1;
 936     if (longpath != NULL) {
 937       if ((p = strrchr( longpath, '\\' )) != NULL) {
 938         p++;
 939         longlen -= (p-longpath);
 940         lstrcpyn32A( p, longfilename , longlen);
 941       }
 942     }
 943     shortpathlen =
 944       ((strrchr( full_name.short_name, '\\' ) - full_name.short_name) + 1);
 945     return shortpathlen + strlen( longfilename );
 946 }
 947
 948
 949 /***********************************************************************
 950  *           GetLongPathName32W   (KERNEL32.269)
 951  */
 952 DWORD WINAPI GetLongPathName32W( LPCWSTR shortpath, LPWSTR longpath,
 953                                   DWORD longlen )
 954 {
 955     DOS_FULL_NAME full_name;
 956     DWORD ret = 0;
 957     LPSTR shortpathA = HEAP_strdupWtoA( GetProcessHeap(), 0, shortpath );
 958
 959     /* FIXME: is it correct to always return a fully qualified short path? */
 960     if (DOSFS_GetFullName( shortpathA, TRUE, &full_name ))
 961     {
 962         ret = strlen( full_name.short_name );
 963         lstrcpynAtoW( longpath, full_name.long_name, longlen );
 964     }
 965     HeapFree( GetProcessHeap(), 0, shortpathA );
 966     return ret;
 967 }
 968
 969
 970 /***********************************************************************
 971  *           DOSFS_DoGetFullPathName
 972  *
 973  * Implementation of GetFullPathName32A/W.
 974  */
 975 static DWORD DOSFS_DoGetFullPathName( LPCSTR name, DWORD len, LPSTR result,
 976                                       BOOL32 unicode )
 977 {
 978     char buffer[MAX_PATHNAME_LEN];
 979     int drive;
 980     char *p;
 981
 982     TRACE(dosfs, "converting %s\n", name );
 983
 984     if (!name || !result) return 0;
 985
 986     if ((drive = DOSFS_GetPathDrive( &name )) == -1) return 0;
 987     p = buffer;
 988     *p++ = 'A' + drive;
 989     *p++ = ':';
 990     if (IS_END_OF_NAME(*name) && (*name))  /* Absolute path */
 991     {
 992         while ((*name == '\\') || (*name == '/')) name++;
 993     }
 994     else  /* Relative path or empty path */
 995     {
 996         *p++ = '\\';
 997         lstrcpyn32A( p, DRIVE_GetDosCwd(drive), sizeof(buffer) - 3 );
 998         if (*p) p += strlen(p); else p--;
 999     }
1000     if (!*name) /* empty path */
1001       *p++ = '\\';
1002     *p = '\0';
1003
1004     while (*name)
1005     {
1006         if (*name == '.')
1007         {
1008             if (IS_END_OF_NAME(name[1]))
1009             {
1010                 name++;
1011                 while ((*name == '\\') || (*name == '/')) name++;
1012                 continue;
1013             }
1014             else if ((name[1] == '.') && IS_END_OF_NAME(name[2]))
1015             {
1016                 name += 2;
1017                 while ((*name == '\\') || (*name == '/')) name++;
1018                 while ((p > buffer + 2) && (*p != '\\')) p--;
1019                 *p = '\0';  /* Remove trailing separator */
1020                 continue;
1021             }
1022         }
1023         if (p >= buffer + sizeof(buffer) - 1)
1024         {
1025             DOS_ERROR( ER_PathNotFound, EC_NotFound, SA_Abort, EL_Disk );
1026             return 0;
1027         }
1028         *p++ = '\\';
1029         while (!IS_END_OF_NAME(*name) && (p < buffer + sizeof(buffer) - 1))
1030             *p++ = *name++;
1031         *p = '\0';
1032         while ((*name == '\\') || (*name == '/')) name++;
1033     }
1034
1035     if (!buffer[2])
1036     {
1037         buffer[2] = '\\';
1038         buffer[3] = '\0';
1039     }
1040     if (!(DRIVE_GetFlags(drive) & DRIVE_CASE_PRESERVING))
1041         CharUpper32A( buffer );
1042
1043     if (unicode) lstrcpynAtoW( (LPWSTR)result, buffer, len );
1044     else lstrcpyn32A( result, buffer, len );
1045
1046     TRACE(dosfs, "returning %s\n", buffer );
1047     return strlen(buffer);
1048 }
1049
1050
1051 /***********************************************************************
1052  *           GetFullPathName32A   (KERNEL32.272)
1053  */
1054 DWORD WINAPI GetFullPathName32A( LPCSTR name, DWORD len, LPSTR buffer,
1055                                  LPSTR *lastpart )
1056 {
1057     DWORD ret = DOSFS_DoGetFullPathName( name, len, buffer, FALSE );
1058     if (ret && lastpart)
1059     {
1060         LPSTR p = buffer + strlen(buffer);
1061         while ((p > buffer + 2) && (*p != '\\')) p--;
1062         *lastpart = p + 1;
1063     }
1064     return ret;
1065 }
1066
1067
1068 /***********************************************************************
1069  *           GetFullPathName32W   (KERNEL32.273)
1070  */
1071 DWORD WINAPI GetFullPathName32W( LPCWSTR name, DWORD len, LPWSTR buffer,
1072                                  LPWSTR *lastpart )
1073 {
1074     LPSTR nameA = HEAP_strdupWtoA( GetProcessHeap(), 0, name );
1075     DWORD ret = DOSFS_DoGetFullPathName( nameA, len, (LPSTR)buffer, TRUE );
1076     HeapFree( GetProcessHeap(), 0, nameA );
1077     if (ret && lastpart)
1078     {
1079         LPWSTR p = buffer + lstrlen32W(buffer);
1080         while ((p > buffer + 2) && (*p != '\\')) p--;
1081         *lastpart = p + 1;
1082     }
1083     return ret;
1084 }
1085
1086 /***********************************************************************
1087  *           DOSFS_FindNextEx
1088  */
1089 static int DOSFS_FindNextEx( FIND_FIRST_INFO *info, WIN32_FIND_DATA32A *entry )
1090 {
1091     BYTE attr = info->attr | FA_UNUSED | FA_ARCHIVE | FA_RDONLY;
1092     UINT32 flags = DRIVE_GetFlags( info->drive );
1093     char *p, buffer[MAX_PATHNAME_LEN];
1094     const char *drive_path;
1095     int drive_root;
1096     LPCSTR long_name, short_name;
1097     BY_HANDLE_FILE_INFORMATION fileinfo;
1098     char dos_name[13];
1099
1100     if ((info->attr & ~(FA_UNUSED | FA_ARCHIVE | FA_RDONLY)) == FA_LABEL)
1101     {
1102         if (info->cur_pos) return 0;
1103         entry->dwFileAttributes  = FILE_ATTRIBUTE_LABEL;
1104         DOSFS_UnixTimeToFileTime( (time_t)0, &entry->ftCreationTime, 0 );
1105         DOSFS_UnixTimeToFileTime( (time_t)0, &entry->ftLastAccessTime, 0 );
1106         DOSFS_UnixTimeToFileTime( (time_t)0, &entry->ftLastWriteTime, 0 );
1107         entry->nFileSizeHigh     = 0;
1108         entry->nFileSizeLow      = 0;
1109         entry->dwReserved0       = 0;
1110         entry->dwReserved1       = 0;
1111         DOSFS_ToDosDTAFormat( DRIVE_GetLabel( info->drive ), entry->cFileName );
1112         strcpy( entry->cAlternateFileName, entry->cFileName );
1113         info->cur_pos++;
1114         return 1;
1115     }
1116
1117     drive_path = info->path + strlen(DRIVE_GetRoot( info->drive ));
1118     while ((*drive_path == '/') || (*drive_path == '\\')) drive_path++;
1119     drive_root = !*drive_path;
1120
1121     lstrcpyn32A( buffer, info->path, sizeof(buffer) - 1 );
1122     strcat( buffer, "/" );
1123     p = buffer + strlen(buffer);
1124
1125     while (DOSFS_ReadDir( info->dir, &long_name, &short_name ))
1126     {
1127         info->cur_pos++;
1128
1129         /* Don't return '.' and '..' in the root of the drive */
1130         if (drive_root && (long_name[0] == '.') &&
1131             (!long_name[1] || ((long_name[1] == '.') && !long_name[2])))
1132             continue;
1133
1134         /* Check the long mask */
1135
1136         if (info->long_mask)
1137         {
1138             if (!DOSFS_MatchLong( info->long_mask, long_name,
1139                                   flags & DRIVE_CASE_SENSITIVE )) continue;
1140         }
1141
1142         /* Check the short mask */
1143
1144         if (info->short_mask)
1145         {
1146             if (!short_name)
1147             {
1148                 DOSFS_Hash( long_name, dos_name, TRUE,
1149                             !(flags & DRIVE_CASE_SENSITIVE) );
1150                 short_name = dos_name;
1151             }
1152             if (!DOSFS_MatchShort( info->short_mask, short_name )) continue;
1153         }
1154
1155         /* Check the file attributes */
1156
1157         lstrcpyn32A( p, long_name, sizeof(buffer) - (int)(p - buffer) );
1158         if (!FILE_Stat( buffer, &fileinfo ))
1159         {
1160             WARN(dosfs, "can't stat %s\n", buffer);
1161             continue;
1162         }
1163         if (fileinfo.dwFileAttributes & ~attr) continue;
1164
1165         /* We now have a matching entry; fill the result and return */
1166
1167         entry->dwFileAttributes = fileinfo.dwFileAttributes;
1168         entry->ftCreationTime   = fileinfo.ftCreationTime;
1169         entry->ftLastAccessTime = fileinfo.ftLastAccessTime;
1170         entry->ftLastWriteTime  = fileinfo.ftLastWriteTime;
1171         entry->nFileSizeHigh    = fileinfo.nFileSizeHigh;
1172         entry->nFileSizeLow     = fileinfo.nFileSizeLow;
1173
1174         if (short_name)
1175             DOSFS_ToDosDTAFormat( short_name, entry->cAlternateFileName );
1176         else
1177             DOSFS_Hash( long_name, entry->cAlternateFileName, FALSE,
1178                         !(flags & DRIVE_CASE_SENSITIVE) );
1179
1180         lstrcpyn32A( entry->cFileName, long_name, sizeof(entry->cFileName) );
1181         if (!(flags & DRIVE_CASE_PRESERVING)) CharLower32A( entry->cFileName );
1182         TRACE(dosfs, "returning %s (%s) %02lx %ld\n",
1183                        entry->cFileName, entry->cAlternateFileName,
1184                        entry->dwFileAttributes, entry->nFileSizeLow );
1185         return 1;
1186     }
1187     return 0;  /* End of directory */
1188 }
1189
1190 /***********************************************************************
1191  *           DOSFS_FindNext
1192  *
1193  * Find the next matching file. Return the number of entries read to find
1194  * the matching one, or 0 if no more entries.
1195  * 'short_mask' is the 8.3 mask (in FCB format), 'long_mask' is the long
1196  * file name mask. Either or both can be NULL.
1197  *
1198  * NOTE: This is supposed to be only called by the int21 emulation
1199  *       routines. Thus, we should own the Win16Mutex anyway.
1200  *       Nevertheless, we explicitly enter it to ensure the static
1201  *       directory cache is protected.
1202  */
1203 int DOSFS_FindNext( const char *path, const char *short_mask,
1204                     const char *long_mask, int drive, BYTE attr,
1205                     int skip, WIN32_FIND_DATA32A *entry )
1206 {
1207     static FIND_FIRST_INFO info = { NULL };
1208     LPCSTR short_name, long_name;
1209     int count;
1210
1211     SYSLEVEL_EnterWin16Lock();
1212
1213     /* Check the cached directory */
1214     if (!(info.dir && info.path == path && info.short_mask == short_mask
1215                    && info.long_mask == long_mask && info.drive == drive
1216                    && info.attr == attr && info.cur_pos <= skip))
1217     {
1218         /* Not in the cache, open it anew */
1219         if (info.dir) DOSFS_CloseDir( info.dir );
1220
1221         info.path = (LPSTR)path;
1222         info.long_mask = (LPSTR)long_mask;
1223         info.short_mask = (LPSTR)short_mask;
1224         info.attr = attr;
1225         info.drive = drive;
1226         info.cur_pos = 0;
1227         info.dir = DOSFS_OpenDir( info.path );
1228     }
1229
1230     /* Skip to desired position */
1231     while (info.cur_pos < skip)
1232         if (info.dir && DOSFS_ReadDir( info.dir, &long_name, &short_name ))
1233             info.cur_pos++;
1234         else
1235             break;
1236
1237     if (info.dir && info.cur_pos == skip && DOSFS_FindNextEx( &info, entry ))
1238         count = info.cur_pos - skip;
1239     else
1240         count = 0;
1241
1242     if (!count)
1243     {
1244         if (info.dir) DOSFS_CloseDir( info.dir );
1245         memset( &info, '\0', sizeof(info) );
1246     }
1247
1248     SYSLEVEL_LeaveWin16Lock();
1249
1250     return count;
1251 }
1252
1253
1254
1255 /*************************************************************************
1256  *           FindFirstFile16   (KERNEL.413)
1257  */
1258 HANDLE16 WINAPI FindFirstFile16( LPCSTR path, WIN32_FIND_DATA32A *data )
1259 {
1260     DOS_FULL_NAME full_name;
1261     HGLOBAL16 handle;
1262     FIND_FIRST_INFO *info;
1263
1264     data->dwReserved0 = data->dwReserved1 = 0x0;
1265     if (!path) return 0;
1266     if (!DOSFS_GetFullName( path, FALSE, &full_name ))
1267         return INVALID_HANDLE_VALUE16;
1268     if (!(handle = GlobalAlloc16( GMEM_MOVEABLE, sizeof(FIND_FIRST_INFO) )))
1269         return INVALID_HANDLE_VALUE16;
1270     info = (FIND_FIRST_INFO *)GlobalLock16( handle );
1271     info->path = HEAP_strdupA( SystemHeap, 0, full_name.long_name );
1272     info->long_mask = strrchr( info->path, '/' );
1273     *(info->long_mask++) = '\0';
1274     info->short_mask = NULL;
1275     info->attr = 0xff;
1276     if (path[0] && (path[1] == ':')) info->drive = toupper(*path) - 'A';
1277     else info->drive = DRIVE_GetCurrentDrive();
1278     info->cur_pos = 0;
1279
1280     info->dir = DOSFS_OpenDir( info->path );
1281
1282     GlobalUnlock16( handle );
1283     if (!FindNextFile16( handle, data ))
1284     {
1285         FindClose16( handle );
1286         DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1287         return INVALID_HANDLE_VALUE16;
1288     }
1289     return handle;
1290 }
1291
1292
1293 /*************************************************************************
1294  *           FindFirstFile32A   (KERNEL32.123)
1295  */
1296 HANDLE32 WINAPI FindFirstFile32A( LPCSTR path, WIN32_FIND_DATA32A *data )
1297 {
1298     HANDLE32 handle = FindFirstFile16( path, data );
1299     if (handle == INVALID_HANDLE_VALUE16) return INVALID_HANDLE_VALUE32;
1300     return handle;
1301 }
1302
1303
1304 /*************************************************************************
1305  *           FindFirstFile32W   (KERNEL32.124)
1306  */
1307 HANDLE32 WINAPI FindFirstFile32W( LPCWSTR path, WIN32_FIND_DATA32W *data )
1308 {
1309     WIN32_FIND_DATA32A dataA;
1310     LPSTR pathA = HEAP_strdupWtoA( GetProcessHeap(), 0, path );
1311     HANDLE32 handle = FindFirstFile32A( pathA, &dataA );
1312     HeapFree( GetProcessHeap(), 0, pathA );
1313     if (handle != INVALID_HANDLE_VALUE32)
1314     {
1315         data->dwFileAttributes = dataA.dwFileAttributes;
1316         data->ftCreationTime   = dataA.ftCreationTime;
1317         data->ftLastAccessTime = dataA.ftLastAccessTime;
1318         data->ftLastWriteTime  = dataA.ftLastWriteTime;
1319         data->nFileSizeHigh    = dataA.nFileSizeHigh;
1320         data->nFileSizeLow     = dataA.nFileSizeLow;
1321         lstrcpyAtoW( data->cFileName, dataA.cFileName );
1322         lstrcpyAtoW( data->cAlternateFileName, dataA.cAlternateFileName );
1323     }
1324     return handle;
1325 }
1326
1327
1328 /*************************************************************************
1329  *           FindNextFile16   (KERNEL.414)
1330  */
1331 BOOL16 WINAPI FindNextFile16( HANDLE16 handle, WIN32_FIND_DATA32A *data )
1332 {
1333     FIND_FIRST_INFO *info;
1334
1335     if (!(info = (FIND_FIRST_INFO *)GlobalLock16( handle )))
1336     {
1337         DOS_ERROR( ER_InvalidHandle, EC_ProgramError, SA_Abort, EL_Disk );
1338         return FALSE;
1339     }
1340     GlobalUnlock16( handle );
1341     if (!info->path || !info->dir)
1342     {
1343         DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1344         return FALSE;
1345     }
1346     if (!DOSFS_FindNextEx( info, data ))
1347     {
1348         DOSFS_CloseDir( info->dir ); info->dir = NULL;
1349         HeapFree( SystemHeap, 0, info->path );
1350         info->path = info->long_mask = NULL;
1351         DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1352         return FALSE;
1353     }
1354     return TRUE;
1355 }
1356
1357
1358 /*************************************************************************
1359  *           FindNextFile32A   (KERNEL32.126)
1360  */
1361 BOOL32 WINAPI FindNextFile32A( HANDLE32 handle, WIN32_FIND_DATA32A *data )
1362 {
1363     return FindNextFile16( handle, data );
1364 }
1365
1366
1367 /*************************************************************************
1368  *           FindNextFile32W   (KERNEL32.127)
1369  */
1370 BOOL32 WINAPI FindNextFile32W( HANDLE32 handle, WIN32_FIND_DATA32W *data )
1371 {
1372     WIN32_FIND_DATA32A dataA;
1373     if (!FindNextFile32A( handle, &dataA )) return FALSE;
1374     data->dwFileAttributes = dataA.dwFileAttributes;
1375     data->ftCreationTime   = dataA.ftCreationTime;
1376     data->ftLastAccessTime = dataA.ftLastAccessTime;
1377     data->ftLastWriteTime  = dataA.ftLastWriteTime;
1378     data->nFileSizeHigh    = dataA.nFileSizeHigh;
1379     data->nFileSizeLow     = dataA.nFileSizeLow;
1380     lstrcpyAtoW( data->cFileName, dataA.cFileName );
1381     lstrcpyAtoW( data->cAlternateFileName, dataA.cAlternateFileName );
1382     return TRUE;
1383 }
1384
1385
1386 /*************************************************************************
1387  *           FindClose16   (KERNEL.415)
1388  */
1389 BOOL16 WINAPI FindClose16( HANDLE16 handle )
1390 {
1391     FIND_FIRST_INFO *info;
1392
1393     if ((handle == INVALID_HANDLE_VALUE16) ||
1394         !(info = (FIND_FIRST_INFO *)GlobalLock16( handle )))
1395     {
1396         DOS_ERROR( ER_InvalidHandle, EC_ProgramError, SA_Abort, EL_Disk );
1397         return FALSE;
1398     }
1399     if (info->dir) DOSFS_CloseDir( info->dir );
1400     if (info->path) HeapFree( SystemHeap, 0, info->path );
1401     GlobalUnlock16( handle );
1402     GlobalFree16( handle );
1403     return TRUE;
1404 }
1405
1406
1407 /*************************************************************************
1408  *           FindClose32   (KERNEL32.119)
1409  */
1410 BOOL32 WINAPI FindClose32( HANDLE32 handle )
1411 {
1412     return FindClose16( (HANDLE16)handle );
1413 }
1414
1415
1416 /***********************************************************************
1417  *           DOSFS_UnixTimeToFileTime
1418  *
1419  * Convert a Unix time to FILETIME format.
1420  * The FILETIME structure is a 64-bit value representing the number of
1421  * 100-nanosecond intervals since January 1, 1601, 0:00.
1422  * 'remainder' is the nonnegative number of 100-ns intervals
1423  * corresponding to the time fraction smaller than 1 second that
1424  * couldn't be stored in the time_t value.
1425  */
1426 void DOSFS_UnixTimeToFileTime( time_t unix_time, FILETIME *filetime,
1427                                DWORD remainder )
1428 {
1429     /* NOTES:
1430
1431        CONSTANTS:
1432        The time difference between 1 January 1601, 00:00:00 and
1433        1 January 1970, 00:00:00 is 369 years, plus the leap years
1434        from 1604 to 1968, excluding 1700, 1800, 1900.
1435        This makes (1968 - 1600) / 4 - 3 = 89 leap days, and a total
1436        of 134774 days.
1437
1438        Any day in that period had 24 * 60 * 60 = 86400 seconds.
1439
1440        The time difference is 134774 * 86400 * 10000000, which can be written
1441        116444736000000000
1442        27111902 * 2^32 + 3577643008
1443        413 * 2^48 + 45534 * 2^32 + 54590 * 2^16 + 32768
1444
1445        If you find that these constants are buggy, please change them in all
1446        instances in both conversion functions.
1447
1448        VERSIONS:
1449        There are two versions, one of them uses long long variables and
1450        is presumably faster but not ISO C. The other one uses standard C
1451        data types and operations but relies on the assumption that negative
1452        numbers are stored as 2's complement (-1 is 0xffff....). If this
1453        assumption is violated, dates before 1970 will not convert correctly.
1454        This should however work on any reasonable architecture where WINE
1455        will run.
1456
1457        DETAILS:
1458
1459        Take care not to remove the casts. I have tested these functions
1460        (in both versions) for a lot of numbers. I would be interested in
1461        results on other compilers than GCC.
1462
1463        The operations have been designed to account for the possibility
1464        of 64-bit time_t in future UNICES. Even the versions without
1465        internal long long numbers will work if time_t only is 64 bit.
1466        A 32-bit shift, which was necessary for that operation, turned out
1467        not to work correctly in GCC, besides giving the warning. So I
1468        used a double 16-bit shift instead. Numbers are in the ISO version
1469        represented by three limbs, the most significant with 32 bit, the
1470        other two with 16 bit each.
1471
1472        As the modulo-operator % is not well-defined for negative numbers,
1473        negative divisors have been avoided in DOSFS_FileTimeToUnixTime.
1474
1475        There might be quicker ways to do this in C. Certainly so in
1476        assembler.
1477
1478        Claus Fischer, fischer@iue.tuwien.ac.at
1479        */
1480
1481 #if (SIZEOF_LONG_LONG >= 8)
1482 #  define USE_LONG_LONG 1
1483 #else
1484 #  define USE_LONG_LONG 0
1485 #endif
1486
1487 #if USE_LONG_LONG               /* gcc supports long long type */
1488
1489     long long int t = unix_time;
1490     t *= 10000000;
1491     t += 116444736000000000LL;
1492     t += remainder;
1493     filetime->dwLowDateTime  = (UINT32)t;
1494     filetime->dwHighDateTime = (UINT32)(t >> 32);
1495
1496 #else  /* ISO version */
1497
1498     UINT32 a0;                  /* 16 bit, low    bits */
1499     UINT32 a1;                  /* 16 bit, medium bits */
1500     UINT32 a2;                  /* 32 bit, high   bits */
1501
1502     /* Copy the unix time to a2/a1/a0 */
1503     a0 =  unix_time & 0xffff;
1504     a1 = (unix_time >> 16) & 0xffff;
1505     /* This is obsolete if unix_time is only 32 bits, but it does not hurt.
1506        Do not replace this by >> 32, it gives a compiler warning and it does
1507        not work. */
1508     a2 = (unix_time >= 0 ? (unix_time >> 16) >> 16 :
1509           ~((~unix_time >> 16) >> 16));
1510
1511     /* Multiply a by 10000000 (a = a2/a1/a0)
1512        Split the factor into 10000 * 1000 which are both less than 0xffff. */
1513     a0 *= 10000;
1514     a1 = a1 * 10000 + (a0 >> 16);
1515     a2 = a2 * 10000 + (a1 >> 16);
1516     a0 &= 0xffff;
1517     a1 &= 0xffff;
1518
1519     a0 *= 1000;
1520     a1 = a1 * 1000 + (a0 >> 16);
1521     a2 = a2 * 1000 + (a1 >> 16);
1522     a0 &= 0xffff;
1523     a1 &= 0xffff;
1524
1525     /* Add the time difference and the remainder */
1526     a0 += 32768 + (remainder & 0xffff);
1527     a1 += 54590 + (remainder >> 16   ) + (a0 >> 16);
1528     a2 += 27111902                     + (a1 >> 16);
1529     a0 &= 0xffff;
1530     a1 &= 0xffff;
1531
1532     /* Set filetime */
1533     filetime->dwLowDateTime  = (a1 << 16) + a0;
1534     filetime->dwHighDateTime = a2;
1535 #endif
1536 }
1537
1538
1539 /***********************************************************************
1540  *           DOSFS_FileTimeToUnixTime
1541  *
1542  * Convert a FILETIME format to Unix time.
1543  * If not NULL, 'remainder' contains the fractional part of the filetime,
1544  * in the range of [0..9999999] (even if time_t is negative).
1545  */
1546 time_t DOSFS_FileTimeToUnixTime( const FILETIME *filetime, DWORD *remainder )
1547 {
1548     /* Read the comment in the function DOSFS_UnixTimeToFileTime. */
1549 #if USE_LONG_LONG
1550
1551     long long int t = filetime->dwHighDateTime;
1552     t <<= 32;
1553     t += (UINT32)filetime->dwLowDateTime;
1554     t -= 116444736000000000LL;
1555     if (t < 0)
1556     {
1557         if (remainder) *remainder = 9999999 - (-t - 1) % 10000000;
1558         return -1 - ((-t - 1) / 10000000);
1559     }
1560     else
1561     {
1562         if (remainder) *remainder = t % 10000000;
1563         return t / 10000000;
1564     }
1565
1566 #else  /* ISO version */
1567
1568     UINT32 a0;                  /* 16 bit, low    bits */
1569     UINT32 a1;                  /* 16 bit, medium bits */
1570     UINT32 a2;                  /* 32 bit, high   bits */
1571     UINT32 r;                   /* remainder of division */
1572     unsigned int carry;         /* carry bit for subtraction */
1573     int negative;               /* whether a represents a negative value */
1574
1575     /* Copy the time values to a2/a1/a0 */
1576     a2 =  (UINT32)filetime->dwHighDateTime;
1577     a1 = ((UINT32)filetime->dwLowDateTime ) >> 16;
1578     a0 = ((UINT32)filetime->dwLowDateTime ) & 0xffff;
1579
1580     /* Subtract the time difference */
1581     if (a0 >= 32768           ) a0 -=             32768        , carry = 0;
1582     else                        a0 += (1 << 16) - 32768        , carry = 1;
1583
1584     if (a1 >= 54590    + carry) a1 -=             54590 + carry, carry = 0;
1585     else                        a1 += (1 << 16) - 54590 - carry, carry = 1;
1586
1587     a2 -= 27111902 + carry;
1588
1589     /* If a is negative, replace a by (-1-a) */
1590     negative = (a2 >= ((UINT32)1) << 31);
1591     if (negative)
1592     {
1593         /* Set a to -a - 1 (a is a2/a1/a0) */
1594         a0 = 0xffff - a0;
1595         a1 = 0xffff - a1;
1596         a2 = ~a2;
1597     }
1598
1599     /* Divide a by 10000000 (a = a2/a1/a0), put the rest into r.
1600        Split the divisor into 10000 * 1000 which are both less than 0xffff. */
1601     a1 += (a2 % 10000) << 16;
1602     a2 /=       10000;
1603     a0 += (a1 % 10000) << 16;
1604     a1 /=       10000;
1605     r   =  a0 % 10000;
1606     a0 /=       10000;
1607
1608     a1 += (a2 % 1000) << 16;
1609     a2 /=       1000;
1610     a0 += (a1 % 1000) << 16;
1611     a1 /=       1000;
1612     r  += (a0 % 1000) * 10000;
1613     a0 /=       1000;
1614
1615     /* If a was negative, replace a by (-1-a) and r by (9999999 - r) */
1616     if (negative)
1617     {
1618         /* Set a to -a - 1 (a is a2/a1/a0) */
1619         a0 = 0xffff - a0;
1620         a1 = 0xffff - a1;
1621         a2 = ~a2;
1622
1623         r  = 9999999 - r;
1624     }
1625
1626     if (remainder) *remainder = r;
1627
1628     /* Do not replace this by << 32, it gives a compiler warning and it does
1629        not work. */
1630     return ((((time_t)a2) << 16) << 16) + (a1 << 16) + a0;
1631 #endif
1632 }
1633
1634
1635 /***********************************************************************
1636  *           DosDateTimeToFileTime   (KERNEL32.76)
1637  */
1638 BOOL32 WINAPI DosDateTimeToFileTime( WORD fatdate, WORD fattime, LPFILETIME ft)
1639 {
1640     struct tm newtm;
1641
1642     newtm.tm_sec  = (fattime & 0x1f) * 2;
1643     newtm.tm_min  = (fattime >> 5) & 0x3f;
1644     newtm.tm_hour = (fattime >> 11);
1645     newtm.tm_mday = (fatdate & 0x1f);
1646     newtm.tm_mon  = ((fatdate >> 5) & 0x0f) - 1;
1647     newtm.tm_year = (fatdate >> 9) + 80;
1648     DOSFS_UnixTimeToFileTime( mktime( &newtm ), ft, 0 );
1649     return TRUE;
1650 }
1651
1652
1653 /***********************************************************************
1654  *           FileTimeToDosDateTime   (KERNEL32.111)
1655  */
1656 BOOL32 WINAPI FileTimeToDosDateTime( const FILETIME *ft, LPWORD fatdate,
1657                                      LPWORD fattime )
1658 {
1659     time_t unixtime = DOSFS_FileTimeToUnixTime( ft, NULL );
1660     struct tm *tm = localtime( &unixtime );
1661     if (fattime)
1662         *fattime = (tm->tm_hour << 11) + (tm->tm_min << 5) + (tm->tm_sec / 2);
1663     if (fatdate)
1664         *fatdate = ((tm->tm_year - 80) << 9) + ((tm->tm_mon + 1) << 5)
1665                    + tm->tm_mday;
1666     return TRUE;
1667 }
1668
1669
1670 /***********************************************************************
1671  *           LocalFileTimeToFileTime   (KERNEL32.373)
1672  */
1673 BOOL32 WINAPI LocalFileTimeToFileTime( const FILETIME *localft,
1674                                        LPFILETIME utcft )
1675 {
1676     struct tm *xtm;
1677     DWORD remainder;
1678
1679     /* convert from local to UTC. Perhaps not correct. FIXME */
1680     time_t unixtime = DOSFS_FileTimeToUnixTime( localft, &remainder );
1681     xtm = gmtime( &unixtime );
1682     DOSFS_UnixTimeToFileTime( mktime(xtm), utcft, remainder );
1683     return TRUE;
1684 }
1685
1686
1687 /***********************************************************************
1688  *           FileTimeToLocalFileTime   (KERNEL32.112)
1689  */
1690 BOOL32 WINAPI FileTimeToLocalFileTime( const FILETIME *utcft,
1691                                        LPFILETIME localft )
1692 {
1693     DWORD remainder;
1694     /* convert from UTC to local. Perhaps not correct. FIXME */
1695     time_t unixtime = DOSFS_FileTimeToUnixTime( utcft, &remainder );
1696 #ifdef HAVE_TIMEGM
1697     struct tm *xtm = localtime( &unixtime );
1698     time_t localtime;
1699
1700     localtime = timegm(xtm);
1701     DOSFS_UnixTimeToFileTime( localtime, localft, remainder );
1702
1703 #else
1704     struct tm *xtm,*gtm;
1705     time_t time1,time2;
1706
1707     xtm = localtime( &unixtime );
1708     gtm = gmtime( &unixtime );
1709     time1 = mktime(xtm);
1710     time2 = mktime(gtm);
1711     DOSFS_UnixTimeToFileTime( 2*time1-time2, localft, remainder );
1712 #endif
1713     return TRUE;
1714 }
1715
1716
1717 /***********************************************************************
1718  *           FileTimeToSystemTime   (KERNEL32.113)
1719  */
1720 BOOL32 WINAPI FileTimeToSystemTime( const FILETIME *ft, LPSYSTEMTIME syst )
1721 {
1722     struct tm *xtm;
1723     DWORD remainder;
1724     time_t xtime = DOSFS_FileTimeToUnixTime( ft, &remainder );
1725     xtm = gmtime(&xtime);
1726     syst->wYear         = xtm->tm_year+1900;
1727     syst->wMonth        = xtm->tm_mon + 1;
1728     syst->wDayOfWeek    = xtm->tm_wday;
1729     syst->wDay          = xtm->tm_mday;
1730     syst->wHour         = xtm->tm_hour;
1731     syst->wMinute       = xtm->tm_min;
1732     syst->wSecond       = xtm->tm_sec;
1733     syst->wMilliseconds = remainder / 10000;
1734     return TRUE;
1735 }
1736
1737 /***********************************************************************
1738  *           QueryDosDeviceA   (KERNEL32.413)
1739  *
1740  * returns array of strings terminated by \0, terminated by \0
1741  */
1742 DWORD WINAPI QueryDosDevice32A(LPCSTR devname,LPSTR target,DWORD bufsize)
1743 {
1744     LPSTR s;
1745     char  buffer[200];
1746
1747     TRACE(dosfs,"(%s,...)\n",devname?devname:"<null>");
1748     if (!devname) {
1749         /* return known MSDOS devices */
1750         lstrcpy32A(buffer,"CON COM1 COM2 LPT1 NUL ");
1751         while ((s=strchr(buffer,' ')))
1752                 *s='\0';
1753
1754         lstrcpyn32A(target,buffer,bufsize);
1755         return strlen(buffer);
1756     }
1757     lstrcpy32A(buffer,"\\DEV\\");
1758     lstrcat32A(buffer,devname);
1759     if ((s=strchr(buffer,':'))) *s='\0';
1760     lstrcpyn32A(target,buffer,bufsize);
1761     return strlen(buffer);
1762 }
1763
1764
1765 /***********************************************************************
1766  *           QueryDosDeviceW   (KERNEL32.414)
1767  *
1768  * returns array of strings terminated by \0, terminated by \0
1769  */
1770 DWORD WINAPI QueryDosDevice32W(LPCWSTR devname,LPWSTR target,DWORD bufsize)
1771 {
1772     LPSTR devnameA = devname?HEAP_strdupWtoA(GetProcessHeap(),0,devname):NULL;
1773     LPSTR targetA = (LPSTR)HEAP_xalloc(GetProcessHeap(),0,bufsize);
1774     DWORD ret = QueryDosDevice32A(devnameA,targetA,bufsize);
1775
1776     lstrcpynAtoW(target,targetA,bufsize);
1777     if (devnameA) HeapFree(GetProcessHeap(),0,devnameA);
1778     if (targetA) HeapFree(GetProcessHeap(),0,targetA);
1779     return ret;
1780 }
1781
1782
1783 /***********************************************************************
1784  *           SystemTimeToFileTime   (KERNEL32.526)
1785  */
1786 BOOL32 WINAPI SystemTimeToFileTime( const SYSTEMTIME *syst, LPFILETIME ft )
1787 {
1788 #ifdef HAVE_TIMEGM
1789     struct tm xtm;
1790     time_t utctime;
1791 #else
1792     struct tm xtm,*local_tm,*utc_tm;
1793     time_t localtim,utctime;
1794 #endif
1795
1796     xtm.tm_year = syst->wYear-1900;
1797     xtm.tm_mon  = syst->wMonth - 1;
1798     xtm.tm_wday = syst->wDayOfWeek;
1799     xtm.tm_mday = syst->wDay;
1800     xtm.tm_hour = syst->wHour;
1801     xtm.tm_min  = syst->wMinute;
1802     xtm.tm_sec  = syst->wSecond; /* this is UTC */
1803     xtm.tm_isdst = -1;
1804 #ifdef HAVE_TIMEGM
1805     utctime = timegm(&xtm);
1806     DOSFS_UnixTimeToFileTime( utctime, ft,
1807                               syst->wMilliseconds * 10000 );
1808 #else
1809     localtim = mktime(&xtm);    /* now we've got local time */
1810     local_tm = localtime(&localtim);
1811     utc_tm = gmtime(&localtim);
1812     utctime = mktime(utc_tm);
1813     DOSFS_UnixTimeToFileTime( 2*localtim -utctime, ft,
1814                               syst->wMilliseconds * 10000 );
1815 #endif
1816     return TRUE;
1817 }
1818
1819 BOOL32 WINAPI DefineDosDevice32A(DWORD flags,LPCSTR devname,LPCSTR targetpath) {
1820         FIXME(dosfs,"(0x%08lx,%s,%s),stub!\n",flags,devname,targetpath);
1821         SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1822         return FALSE;
1823 }