loader/module.c

   1 /*
   2  * Modules
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <assert.h>
  22 #include <fcntl.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <sys/types.h>
  27 #include <unistd.h>
  28 #include "wine/winbase16.h"
  29 #include "winerror.h"
  30 #include "heap.h"
  31 #include "file.h"
  32 #include "module.h"
  33 #include "wine/debug.h"
  34 #include "wine/server.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(module);
  37 WINE_DECLARE_DEBUG_CHANNEL(win32);
  38 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
  39
  40 WINE_MODREF *MODULE_modref_list = NULL;
  41
  42 static WINE_MODREF *exe_modref;
  43 static int free_lib_count;   /* recursion depth of FreeLibrary calls */
  44 static int process_detaching;  /* set on process detach to avoid deadlocks with thread detach */
  45
  46 static CRITICAL_SECTION loader_section = CRITICAL_SECTION_INIT( "loader_section" );
  47
  48 /***********************************************************************
  49  *           wait_input_idle
  50  *
  51  * Wrapper to call WaitForInputIdle USER function
  52  */
  53 typedef DWORD (WINAPI *WaitForInputIdle_ptr)( HANDLE hProcess, DWORD dwTimeOut );
  54
  55 static DWORD wait_input_idle( HANDLE process, DWORD timeout )
  56 {
  57     HMODULE mod = GetModuleHandleA( "user32.dll" );
  58     if (mod)
  59     {
  60         WaitForInputIdle_ptr ptr = (WaitForInputIdle_ptr)GetProcAddress( mod, "WaitForInputIdle" );
  61         if (ptr) return ptr( process, timeout );
  62     }
  63     return 0;
  64 }
  65
  66
  67 /*************************************************************************
  68  *              MODULE32_LookupHMODULE
  69  * looks for the referenced HMODULE in the current process
  70  * NOTE: Assumes that the process critical section is held!
  71  */
  72 static WINE_MODREF *MODULE32_LookupHMODULE( HMODULE hmod )
  73 {
  74     WINE_MODREF *wm;
  75
  76     if (!hmod)
  77         return exe_modref;
  78
  79     if (!HIWORD(hmod)) {
  80         ERR("tried to lookup 0x%04x in win32 module handler!\n",hmod);
  81         SetLastError( ERROR_INVALID_HANDLE );
  82         return NULL;
  83     }
  84     for ( wm = MODULE_modref_list; wm; wm=wm->next )
  85         if (wm->module == hmod)
  86             return wm;
  87     SetLastError( ERROR_INVALID_HANDLE );
  88     return NULL;
  89 }
  90
  91 /*************************************************************************
  92  *              MODULE_AllocModRef
  93  *
  94  * Allocate a WINE_MODREF structure and add it to the process list
  95  * NOTE: Assumes that the process critical section is held!
  96  */
  97 WINE_MODREF *MODULE_AllocModRef( HMODULE hModule, LPCSTR filename )
  98 {
  99     WINE_MODREF *wm;
 100
 101     DWORD long_len = strlen( filename );
 102     DWORD short_len = GetShortPathNameA( filename, NULL, 0 );
 103
 104     if ((wm = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
 105                          sizeof(*wm) + long_len + short_len + 1 )))
 106     {
 107         wm->module = hModule;
 108         wm->tlsindex = -1;
 109
 110         wm->filename = wm->data;
 111         memcpy( wm->filename, filename, long_len + 1 );
 112         if ((wm->modname = strrchr( wm->filename, '\\' ))) wm->modname++;
 113         else wm->modname = wm->filename;
 114
 115         wm->short_filename = wm->filename + long_len + 1;
 116         GetShortPathNameA( wm->filename, wm->short_filename, short_len + 1 );
 117         if ((wm->short_modname = strrchr( wm->short_filename, '\\' ))) wm->short_modname++;
 118         else wm->short_modname = wm->short_filename;
 119
 120         wm->next = MODULE_modref_list;
 121         if (wm->next) wm->next->prev = wm;
 122         MODULE_modref_list = wm;
 123
 124         if (!(PE_HEADER(hModule)->FileHeader.Characteristics & IMAGE_FILE_DLL))
 125         {
 126             if (!exe_modref) exe_modref = wm;
 127             else FIXME( "Trying to load second .EXE file: %s\n", filename );
 128         }
 129     }
 130     return wm;
 131 }
 132
 133 /*************************************************************************
 134  *              MODULE_InitDLL
 135  */
 136 static BOOL MODULE_InitDLL( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
 137 {
 138     BOOL retv = TRUE;
 139
 140     static LPCSTR typeName[] = { "PROCESS_DETACH", "PROCESS_ATTACH",
 141                                  "THREAD_ATTACH", "THREAD_DETACH" };
 142     assert( wm );
 143
 144     /* Skip calls for modules loaded with special load flags */
 145
 146     if (wm->flags & WINE_MODREF_DONT_RESOLVE_REFS) return TRUE;
 147
 148     TRACE("(%s,%s,%p) - CALL\n", wm->modname, typeName[type], lpReserved );
 149
 150     /* Call the initialization routine */
 151     retv = PE_InitDLL( wm->module, type, lpReserved );
 152
 153     /* The state of the module list may have changed due to the call
 154        to PE_InitDLL. We cannot assume that this module has not been
 155        deleted.  */
 156     TRACE("(%p,%s,%p) - RETURN %d\n", wm, typeName[type], lpReserved, retv );
 157
 158     return retv;
 159 }
 160
 161 /*************************************************************************
 162  *              MODULE_DllProcessAttach
 163  *
 164  * Send the process attach notification to all DLLs the given module
 165  * depends on (recursively). This is somewhat complicated due to the fact that
 166  *
 167  * - we have to respect the module dependencies, i.e. modules implicitly
 168  *   referenced by another module have to be initialized before the module
 169  *   itself can be initialized
 170  *
 171  * - the initialization routine of a DLL can itself call LoadLibrary,
 172  *   thereby introducing a whole new set of dependencies (even involving
 173  *   the 'old' modules) at any time during the whole process
 174  *
 175  * (Note that this routine can be recursively entered not only directly
 176  *  from itself, but also via LoadLibrary from one of the called initialization
 177  *  routines.)
 178  *
 179  * Furthermore, we need to rearrange the main WINE_MODREF list to allow
 180  * the process *detach* notifications to be sent in the correct order.
 181  * This must not only take into account module dependencies, but also
 182  * 'hidden' dependencies created by modules calling LoadLibrary in their
 183  * attach notification routine.
 184  *
 185  * The strategy is rather simple: we move a WINE_MODREF to the head of the
 186  * list after the attach notification has returned.  This implies that the
 187  * detach notifications are called in the reverse of the sequence the attach
 188  * notifications *returned*.
 189  */
 190 BOOL MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved )
 191 {
 192     BOOL retv = TRUE;
 193     int i;
 194
 195     RtlEnterCriticalSection( &loader_section );
 196
 197     if (!wm)
 198     {
 199         wm = exe_modref;
 200         PE_InitTls();
 201     }
 202     assert( wm );
 203
 204     /* prevent infinite recursion in case of cyclical dependencies */
 205     if (    ( wm->flags & WINE_MODREF_MARKER )
 206          || ( wm->flags & WINE_MODREF_PROCESS_ATTACHED ) )
 207         goto done;
 208
 209     TRACE("(%s,%p) - START\n", wm->modname, lpReserved );
 210
 211     /* Tag current MODREF to prevent recursive loop */
 212     wm->flags |= WINE_MODREF_MARKER;
 213
 214     /* Recursively attach all DLLs this one depends on */
 215     for ( i = 0; retv && i < wm->nDeps; i++ )
 216         if ( wm->deps[i] )
 217             retv = MODULE_DllProcessAttach( wm->deps[i], lpReserved );
 218
 219     /* Call DLL entry point */
 220     if ( retv )
 221     {
 222         retv = MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved );
 223         if ( retv )
 224             wm->flags |= WINE_MODREF_PROCESS_ATTACHED;
 225     }
 226
 227     /* Re-insert MODREF at head of list */
 228     if ( retv && wm->prev )
 229     {
 230         wm->prev->next = wm->next;
 231         if ( wm->next ) wm->next->prev = wm->prev;
 232
 233         wm->prev = NULL;
 234         wm->next = MODULE_modref_list;
 235         MODULE_modref_list = wm->next->prev = wm;
 236     }
 237
 238     /* Remove recursion flag */
 239     wm->flags &= ~WINE_MODREF_MARKER;
 240
 241     TRACE("(%s,%p) - END\n", wm->modname, lpReserved );
 242
 243  done:
 244     RtlLeaveCriticalSection( &loader_section );
 245     return retv;
 246 }
 247
 248 /*************************************************************************
 249  *              MODULE_DllProcessDetach
 250  *
 251  * Send DLL process detach notifications.  See the comment about calling
 252  * sequence at MODULE_DllProcessAttach.  Unless the bForceDetach flag
 253  * is set, only DLLs with zero refcount are notified.
 254  */
 255 void MODULE_DllProcessDetach( BOOL bForceDetach, LPVOID lpReserved )
 256 {
 257     WINE_MODREF *wm;
 258
 259     RtlEnterCriticalSection( &loader_section );
 260     if (bForceDetach) process_detaching = 1;
 261     do
 262     {
 263         for ( wm = MODULE_modref_list; wm; wm = wm->next )
 264         {
 265             /* Check whether to detach this DLL */
 266             if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 267                 continue;
 268             if ( wm->refCount > 0 && !bForceDetach )
 269                 continue;
 270
 271             /* Call detach notification */
 272             wm->flags &= ~WINE_MODREF_PROCESS_ATTACHED;
 273             MODULE_InitDLL( wm, DLL_PROCESS_DETACH, lpReserved );
 274
 275             /* Restart at head of WINE_MODREF list, as entries might have
 276                been added and/or removed while performing the call ... */
 277             break;
 278         }
 279     } while ( wm );
 280
 281     RtlLeaveCriticalSection( &loader_section );
 282 }
 283
 284 /*************************************************************************
 285  *              MODULE_DllThreadAttach
 286  *
 287  * Send DLL thread attach notifications. These are sent in the
 288  * reverse sequence of process detach notification.
 289  *
 290  */
 291 void MODULE_DllThreadAttach( LPVOID lpReserved )
 292 {
 293     WINE_MODREF *wm;
 294
 295     /* don't do any attach calls if process is exiting */
 296     if (process_detaching) return;
 297     /* FIXME: there is still a race here */
 298
 299     RtlEnterCriticalSection( &loader_section );
 300
 301     PE_InitTls();
 302
 303     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 304         if ( !wm->next )
 305             break;
 306
 307     for ( ; wm; wm = wm->prev )
 308     {
 309         if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 310             continue;
 311         if ( wm->flags & WINE_MODREF_NO_DLL_CALLS )
 312             continue;
 313
 314         MODULE_InitDLL( wm, DLL_THREAD_ATTACH, lpReserved );
 315     }
 316
 317     RtlLeaveCriticalSection( &loader_section );
 318 }
 319
 320 /*************************************************************************
 321  *              MODULE_DllThreadDetach
 322  *
 323  * Send DLL thread detach notifications. These are sent in the
 324  * same sequence as process detach notification.
 325  *
 326  */
 327 void MODULE_DllThreadDetach( LPVOID lpReserved )
 328 {
 329     WINE_MODREF *wm;
 330
 331     /* don't do any detach calls if process is exiting */
 332     if (process_detaching) return;
 333     /* FIXME: there is still a race here */
 334
 335     RtlEnterCriticalSection( &loader_section );
 336
 337     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 338     {
 339         if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 340             continue;
 341         if ( wm->flags & WINE_MODREF_NO_DLL_CALLS )
 342             continue;
 343
 344         MODULE_InitDLL( wm, DLL_THREAD_DETACH, lpReserved );
 345     }
 346
 347     RtlLeaveCriticalSection( &loader_section );
 348 }
 349
 350 /****************************************************************************
 351  *              DisableThreadLibraryCalls (KERNEL32.@)
 352  *
 353  * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
 354  */
 355 BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
 356 {
 357     WINE_MODREF *wm;
 358     BOOL retval = TRUE;
 359
 360     RtlEnterCriticalSection( &loader_section );
 361
 362     wm = MODULE32_LookupHMODULE( hModule );
 363     if ( !wm )
 364         retval = FALSE;
 365     else
 366         wm->flags |= WINE_MODREF_NO_DLL_CALLS;
 367
 368     RtlLeaveCriticalSection( &loader_section );
 369
 370     return retval;
 371 }
 372
 373
 374 /***********************************************************************
 375  *           MODULE_CreateDummyModule
 376  *
 377  * Create a dummy NE module for Win32 or Winelib.
 378  */
 379 HMODULE16 MODULE_CreateDummyModule( LPCSTR filename, HMODULE module32 )
 380 {
 381     HMODULE16 hModule;
 382     NE_MODULE *pModule;
 383     SEGTABLEENTRY *pSegment;
 384     char *pStr,*s;
 385     unsigned int len;
 386     const char* basename;
 387     OFSTRUCT *ofs;
 388     int of_size, size;
 389
 390     /* Extract base filename */
 391     basename = strrchr(filename, '\\');
 392     if (!basename) basename = filename;
 393     else basename++;
 394     len = strlen(basename);
 395     if ((s = strchr(basename, '.'))) len = s - basename;
 396
 397     /* Allocate module */
 398     of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
 399                     + strlen(filename) + 1;
 400     size = sizeof(NE_MODULE) +
 401                  /* loaded file info */
 402                  ((of_size + 3) & ~3) +
 403                  /* segment table: DS,CS */
 404                  2 * sizeof(SEGTABLEENTRY) +
 405                  /* name table */
 406                  len + 2 +
 407                  /* several empty tables */
 408                  8;
 409
 410     hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
 411     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 412
 413     FarSetOwner16( hModule, hModule );
 414     pModule = (NE_MODULE *)GlobalLock16( hModule );
 415
 416     /* Set all used entries */
 417     pModule->magic            = IMAGE_OS2_SIGNATURE;
 418     pModule->count            = 1;
 419     pModule->next             = 0;
 420     pModule->flags            = 0;
 421     pModule->dgroup           = 0;
 422     pModule->ss               = 1;
 423     pModule->cs               = 2;
 424     pModule->heap_size        = 0;
 425     pModule->stack_size       = 0;
 426     pModule->seg_count        = 2;
 427     pModule->modref_count     = 0;
 428     pModule->nrname_size      = 0;
 429     pModule->fileinfo         = sizeof(NE_MODULE);
 430     pModule->os_flags         = NE_OSFLAGS_WINDOWS;
 431     pModule->self             = hModule;
 432     pModule->module32         = module32;
 433
 434     /* Set version and flags */
 435     if (module32)
 436     {
 437         pModule->expected_version =
 438             ((PE_HEADER(module32)->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
 439              (PE_HEADER(module32)->OptionalHeader.MinorSubsystemVersion & 0xff);
 440         pModule->flags |= NE_FFLAGS_WIN32;
 441         if (PE_HEADER(module32)->FileHeader.Characteristics & IMAGE_FILE_DLL)
 442             pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
 443     }
 444
 445     /* Set loaded file information */
 446     ofs = (OFSTRUCT *)(pModule + 1);
 447     memset( ofs, 0, of_size );
 448     ofs->cBytes = of_size < 256 ? of_size : 255;   /* FIXME */
 449     strcpy( ofs->szPathName, filename );
 450
 451     pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
 452     pModule->seg_table = (int)pSegment - (int)pModule;
 453     /* Data segment */
 454     pSegment->size    = 0;
 455     pSegment->flags   = NE_SEGFLAGS_DATA;
 456     pSegment->minsize = 0x1000;
 457     pSegment++;
 458     /* Code segment */
 459     pSegment->flags   = 0;
 460     pSegment++;
 461
 462     /* Module name */
 463     pStr = (char *)pSegment;
 464     pModule->name_table = (int)pStr - (int)pModule;
 465     assert(len<256);
 466     *pStr = len;
 467     lstrcpynA( pStr+1, basename, len+1 );
 468     pStr += len+2;
 469
 470     /* All tables zero terminated */
 471     pModule->res_table = pModule->import_table = pModule->entry_table =
 472                 (int)pStr - (int)pModule;
 473
 474     NE_RegisterModule( pModule );
 475     return hModule;
 476 }
 477
 478
 479 /**********************************************************************
 480  *          MODULE_FindModule
 481  *
 482  * Find a (loaded) win32 module depending on path
 483  *
 484  * RETURNS
 485  *      the module handle if found
 486  *      0 if not
 487  */
 488 WINE_MODREF *MODULE_FindModule(
 489         LPCSTR path     /* [in] pathname of module/library to be found */
 490 ) {
 491     WINE_MODREF *wm;
 492     char dllname[260], *p;
 493
 494     /* Append .DLL to name if no extension present */
 495     strcpy( dllname, path );
 496     if (!(p = strrchr( dllname, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 497             strcat( dllname, ".DLL" );
 498
 499     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 500     {
 501         if ( !FILE_strcasecmp( dllname, wm->modname ) )
 502             break;
 503         if ( !FILE_strcasecmp( dllname, wm->filename ) )
 504             break;
 505         if ( !FILE_strcasecmp( dllname, wm->short_modname ) )
 506             break;
 507         if ( !FILE_strcasecmp( dllname, wm->short_filename ) )
 508             break;
 509     }
 510
 511     return wm;
 512 }
 513
 514
 515 /* Check whether a file is an OS/2 or a very old Windows executable
 516  * by testing on import of KERNEL.
 517  *
 518  * FIXME: is reading the module imports the only way of discerning
 519  *        old Windows binaries from OS/2 ones ? At least it seems so...
 520  */
 521 static enum binary_type MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz,
 522                                                  const IMAGE_OS2_HEADER *ne)
 523 {
 524     DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
 525     enum binary_type ret = BINARY_OS216;
 526     LPWORD modtab = NULL;
 527     LPSTR nametab = NULL;
 528     DWORD len;
 529     int i;
 530
 531     /* read modref table */
 532     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
 533       || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
 534       || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
 535       || (len != ne->ne_cmod*sizeof(WORD)) )
 536         goto broken;
 537
 538     /* read imported names table */
 539     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
 540       || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
 541       || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
 542       || (len != ne->ne_enttab - ne->ne_imptab) )
 543         goto broken;
 544
 545     for (i=0; i < ne->ne_cmod; i++)
 546     {
 547         LPSTR module = &nametab[modtab[i]];
 548         TRACE("modref: %.*s\n", module[0], &module[1]);
 549         if (!(strncmp(&module[1], "KERNEL", module[0])))
 550         { /* very old Windows file */
 551             MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
 552             ret = BINARY_WIN16;
 553             goto good;
 554         }
 555     }
 556
 557 broken:
 558     ERR("Hmm, an error occurred. Is this binary file broken ?\n");
 559
 560 good:
 561     HeapFree( GetProcessHeap(), 0, modtab);
 562     HeapFree( GetProcessHeap(), 0, nametab);
 563     SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
 564     return ret;
 565 }
 566
 567 /***********************************************************************
 568  *           MODULE_GetBinaryType
 569  */
 570 enum binary_type MODULE_GetBinaryType( HANDLE hfile )
 571 {
 572     union
 573     {
 574         struct
 575         {
 576             unsigned char magic[4];
 577             unsigned char ignored[12];
 578             unsigned short type;
 579         } elf;
 580         IMAGE_DOS_HEADER mz;
 581     } header;
 582
 583     char magic[4];
 584     DWORD len;
 585
 586     /* Seek to the start of the file and read the header information. */
 587     if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1)
 588         return BINARY_UNKNOWN;
 589     if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header))
 590         return BINARY_UNKNOWN;
 591
 592     if (!memcmp( header.elf.magic, "\177ELF", 4 ))
 593     {
 594         /* FIXME: we don't bother to check byte order, architecture, etc. */
 595         switch(header.elf.type)
 596         {
 597         case 2: return BINARY_UNIX_EXE;
 598         case 3: return BINARY_UNIX_LIB;
 599         }
 600         return BINARY_UNKNOWN;
 601     }
 602
 603     /* Not ELF, try DOS */
 604
 605     if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
 606     {
 607         /* We do have a DOS image so we will now try to seek into
 608          * the file by the amount indicated by the field
 609          * "Offset to extended header" and read in the
 610          * "magic" field information at that location.
 611          * This will tell us if there is more header information
 612          * to read or not.
 613          */
 614         /* But before we do we will make sure that header
 615          * structure encompasses the "Offset to extended header"
 616          * field.
 617          */
 618         if ((header.mz.e_cparhdr << 4) < sizeof(IMAGE_DOS_HEADER))
 619             return BINARY_DOS;
 620         if (header.mz.e_crlc && (header.mz.e_lfarlc < sizeof(IMAGE_DOS_HEADER)))
 621             return BINARY_DOS;
 622         if (header.mz.e_lfanew < sizeof(IMAGE_DOS_HEADER))
 623             return BINARY_DOS;
 624         if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1)
 625             return BINARY_DOS;
 626         if (!ReadFile( hfile, magic, sizeof(magic), &len, NULL ) || len != sizeof(magic))
 627             return BINARY_DOS;
 628
 629         /* Reading the magic field succeeded so
 630          * we will try to determine what type it is.
 631          */
 632         if (!memcmp( magic, "PE\0\0", 4 ))
 633         {
 634             IMAGE_NT_HEADERS nt;
 635
 636             if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) != -1 &&
 637                 ReadFile( hfile, &nt, sizeof(nt), &len, NULL ) && len == sizeof(nt))
 638             {
 639                 if (nt.FileHeader.Characteristics & IMAGE_FILE_DLL) return BINARY_PE_DLL;
 640                 return BINARY_PE_EXE;
 641             }
 642             return BINARY_UNKNOWN;
 643         }
 644
 645         if (!memcmp( magic, "NE", 2 ))
 646         {
 647             /* This is a Windows executable (NE) header.  This can
 648              * mean either a 16-bit OS/2 or a 16-bit Windows or even a
 649              * DOS program (running under a DOS extender).  To decide
 650              * which, we'll have to read the NE header.
 651              */
 652             IMAGE_OS2_HEADER ne;
 653             if (    SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) != -1
 654                     && ReadFile( hfile, &ne, sizeof(ne), &len, NULL )
 655                     && len == sizeof(ne) )
 656             {
 657                 switch ( ne.ne_exetyp )
 658                 {
 659                 case 2:  return BINARY_WIN16;
 660                 case 5:  return BINARY_DOS;
 661                 default: return MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ne);
 662                 }
 663             }
 664             /* Couldn't read header, so abort. */
 665             return BINARY_UNKNOWN;
 666         }
 667
 668         /* Unknown extended header, but this file is nonetheless DOS-executable. */
 669         return BINARY_DOS;
 670     }
 671
 672     return BINARY_UNKNOWN;
 673 }
 674
 675 /***********************************************************************
 676  *             GetBinaryTypeA                     [KERNEL32.@]
 677  *             GetBinaryType                      [KERNEL32.@]
 678  *
 679  * The GetBinaryType function determines whether a file is executable
 680  * or not and if it is it returns what type of executable it is.
 681  * The type of executable is a property that determines in which
 682  * subsystem an executable file runs under.
 683  *
 684  * Binary types returned:
 685  * SCS_32BIT_BINARY: A Win32 based application
 686  * SCS_DOS_BINARY: An MS-Dos based application
 687  * SCS_WOW_BINARY: A Win16 based application
 688  * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
 689  * SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
 690  * SCS_OS216_BINARY: A 16bit OS/2 based application
 691  *
 692  * Returns TRUE if the file is an executable in which case
 693  * the value pointed by lpBinaryType is set.
 694  * Returns FALSE if the file is not an executable or if the function fails.
 695  *
 696  * To do so it opens the file and reads in the header information
 697  * if the extended header information is not present it will
 698  * assume that the file is a DOS executable.
 699  * If the extended header information is present it will
 700  * determine if the file is a 16 or 32 bit Windows executable
 701  * by check the flags in the header.
 702  *
 703  * Note that .COM and .PIF files are only recognized by their
 704  * file name extension; but Windows does it the same way ...
 705  */
 706 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
 707 {
 708     BOOL ret = FALSE;
 709     HANDLE hfile;
 710     char *ptr;
 711
 712     TRACE_(win32)("%s\n", lpApplicationName );
 713
 714     /* Sanity check.
 715      */
 716     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 717         return FALSE;
 718
 719     /* Open the file indicated by lpApplicationName for reading.
 720      */
 721     hfile = CreateFileA( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
 722                          NULL, OPEN_EXISTING, 0, 0 );
 723     if ( hfile == INVALID_HANDLE_VALUE )
 724         return FALSE;
 725
 726     /* Check binary type
 727      */
 728     switch(MODULE_GetBinaryType( hfile ))
 729     {
 730     case BINARY_UNKNOWN:
 731         /* try to determine from file name */
 732         ptr = strrchr( lpApplicationName, '.' );
 733         if (!ptr) break;
 734         if (!FILE_strcasecmp( ptr, ".COM" ))
 735         {
 736             *lpBinaryType = SCS_DOS_BINARY;
 737             ret = TRUE;
 738         }
 739         else if (!FILE_strcasecmp( ptr, ".PIF" ))
 740         {
 741             *lpBinaryType = SCS_PIF_BINARY;
 742             ret = TRUE;
 743         }
 744         break;
 745     case BINARY_PE_EXE:
 746     case BINARY_PE_DLL:
 747         *lpBinaryType = SCS_32BIT_BINARY;
 748         ret = TRUE;
 749         break;
 750     case BINARY_WIN16:
 751         *lpBinaryType = SCS_WOW_BINARY;
 752         ret = TRUE;
 753         break;
 754     case BINARY_OS216:
 755         *lpBinaryType = SCS_OS216_BINARY;
 756         ret = TRUE;
 757         break;
 758     case BINARY_DOS:
 759         *lpBinaryType = SCS_DOS_BINARY;
 760         ret = TRUE;
 761         break;
 762     case BINARY_UNIX_EXE:
 763     case BINARY_UNIX_LIB:
 764         ret = FALSE;
 765         break;
 766     }
 767
 768     CloseHandle( hfile );
 769     return ret;
 770 }
 771
 772 /***********************************************************************
 773  *             GetBinaryTypeW                      [KERNEL32.@]
 774  */
 775 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
 776 {
 777     BOOL ret = FALSE;
 778     LPSTR strNew = NULL;
 779
 780     TRACE_(win32)("%s\n", debugstr_w(lpApplicationName) );
 781
 782     /* Sanity check.
 783      */
 784     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 785         return FALSE;
 786
 787     /* Convert the wide string to a ascii string.
 788      */
 789     strNew = HEAP_strdupWtoA( GetProcessHeap(), 0, lpApplicationName );
 790
 791     if ( strNew != NULL )
 792     {
 793         ret = GetBinaryTypeA( strNew, lpBinaryType );
 794
 795         /* Free the allocated string.
 796          */
 797         HeapFree( GetProcessHeap(), 0, strNew );
 798     }
 799
 800     return ret;
 801 }
 802
 803
 804 /***********************************************************************
 805  *           WinExec     (KERNEL.166)
 806  *           WinExec16   (KERNEL32.@)
 807  */
 808 HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow )
 809 {
 810     LPCSTR p, args = NULL;
 811     LPCSTR name_beg, name_end;
 812     LPSTR name, cmdline;
 813     int arglen;
 814     HINSTANCE16 ret;
 815     char buffer[MAX_PATH];
 816
 817     if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */
 818     {
 819       name_beg = lpCmdLine+1;
 820       p = strchr ( lpCmdLine+1, '"' );
 821       if (p)
 822       {
 823           name_end = p;
 824           args = strchr ( p, ' ' );
 825       }
 826       else /* yes, even valid with trailing '"' missing */
 827           name_end = lpCmdLine+strlen(lpCmdLine);
 828     }
 829     else
 830     {
 831       name_beg = lpCmdLine;
 832       args = strchr( lpCmdLine, ' ' );
 833       name_end = args ? args : lpCmdLine+strlen(lpCmdLine);
 834     }
 835
 836     if ((name_beg == lpCmdLine) && (!args))
 837     { /* just use the original cmdline string as file name */
 838         name = (LPSTR)lpCmdLine;
 839     }
 840     else
 841     {
 842         if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 )))
 843             return ERROR_NOT_ENOUGH_MEMORY;
 844         memcpy( name, name_beg, name_end - name_beg );
 845         name[name_end - name_beg] = '\0';
 846     }
 847
 848     if (args)
 849     {
 850         args++;
 851         arglen = strlen(args);
 852         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen );
 853         cmdline[0] = (BYTE)arglen;
 854         strcpy( cmdline + 1, args );
 855     }
 856     else
 857     {
 858         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 );
 859         cmdline[0] = cmdline[1] = 0;
 860     }
 861
 862     TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]);
 863
 864     if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL ))
 865     {
 866         LOADPARAMS16 params;
 867         WORD showCmd[2];
 868         showCmd[0] = 2;
 869         showCmd[1] = nCmdShow;
 870
 871         params.hEnvironment = 0;
 872         params.cmdLine = MapLS( cmdline );
 873         params.showCmd = MapLS( showCmd );
 874         params.reserved = 0;
 875
 876         ret = LoadModule16( buffer, &params );
 877         UnMapLS( params.cmdLine );
 878         UnMapLS( params.showCmd );
 879     }
 880     else ret = GetLastError();
 881
 882     HeapFree( GetProcessHeap(), 0, cmdline );
 883     if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name );
 884
 885     if (ret == 21)  /* 32-bit module */
 886     {
 887         DWORD count;
 888         ReleaseThunkLock( &count );
 889         ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) );
 890         RestoreThunkLock( count );
 891     }
 892     return ret;
 893 }
 894
 895 /***********************************************************************
 896  *           WinExec   (KERNEL32.@)
 897  */
 898 UINT WINAPI WinExec( LPCSTR lpCmdLine, UINT nCmdShow )
 899 {
 900     PROCESS_INFORMATION info;
 901     STARTUPINFOA startup;
 902     HINSTANCE hInstance;
 903     char *cmdline;
 904
 905     memset( &startup, 0, sizeof(startup) );
 906     startup.cb = sizeof(startup);
 907     startup.dwFlags = STARTF_USESHOWWINDOW;
 908     startup.wShowWindow = nCmdShow;
 909
 910     /* cmdline needs to be writeable for CreateProcess */
 911     if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(lpCmdLine)+1 ))) return 0;
 912     strcpy( cmdline, lpCmdLine );
 913
 914     if (CreateProcessA( NULL, cmdline, NULL, NULL, FALSE,
 915                         0, NULL, NULL, &startup, &info ))
 916     {
 917         /* Give 30 seconds to the app to come up */
 918         if (wait_input_idle( info.hProcess, 30000 ) == 0xFFFFFFFF)
 919             WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() );
 920         hInstance = (HINSTANCE)33;
 921         /* Close off the handles */
 922         CloseHandle( info.hThread );
 923         CloseHandle( info.hProcess );
 924     }
 925     else if ((hInstance = (HINSTANCE)GetLastError()) >= (HINSTANCE)32)
 926     {
 927         FIXME("Strange error set by CreateProcess: %d\n", hInstance );
 928         hInstance = (HINSTANCE)11;
 929     }
 930     HeapFree( GetProcessHeap(), 0, cmdline );
 931     return hInstance;
 932 }
 933
 934 /**********************************************************************
 935  *          LoadModule    (KERNEL32.@)
 936  */
 937 HINSTANCE WINAPI LoadModule( LPCSTR name, LPVOID paramBlock )
 938 {
 939     LOADPARAMS *params = (LOADPARAMS *)paramBlock;
 940     PROCESS_INFORMATION info;
 941     STARTUPINFOA startup;
 942     HINSTANCE hInstance;
 943     LPSTR cmdline, p;
 944     char filename[MAX_PATH];
 945     BYTE len;
 946
 947     if (!name) return (HINSTANCE)ERROR_FILE_NOT_FOUND;
 948
 949     if (!SearchPathA( NULL, name, ".exe", sizeof(filename), filename, NULL ) &&
 950         !SearchPathA( NULL, name, NULL, sizeof(filename), filename, NULL ))
 951         return (HINSTANCE)GetLastError();
 952
 953     len = (BYTE)params->lpCmdLine[0];
 954     if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(filename) + len + 2 )))
 955         return (HINSTANCE)ERROR_NOT_ENOUGH_MEMORY;
 956
 957     strcpy( cmdline, filename );
 958     p = cmdline + strlen(cmdline);
 959     *p++ = ' ';
 960     memcpy( p, params->lpCmdLine + 1, len );
 961     p[len] = 0;
 962
 963     memset( &startup, 0, sizeof(startup) );
 964     startup.cb = sizeof(startup);
 965     if (params->lpCmdShow)
 966     {
 967         startup.dwFlags = STARTF_USESHOWWINDOW;
 968         startup.wShowWindow = params->lpCmdShow[1];
 969     }
 970
 971     if (CreateProcessA( filename, cmdline, NULL, NULL, FALSE, 0,
 972                         params->lpEnvAddress, NULL, &startup, &info ))
 973     {
 974         /* Give 30 seconds to the app to come up */
 975         if (wait_input_idle( info.hProcess, 30000 ) ==  0xFFFFFFFF )
 976             WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() );
 977         hInstance = (HINSTANCE)33;
 978         /* Close off the handles */
 979         CloseHandle( info.hThread );
 980         CloseHandle( info.hProcess );
 981     }
 982     else if ((hInstance = (HINSTANCE)GetLastError()) >= (HINSTANCE)32)
 983     {
 984         FIXME("Strange error set by CreateProcess: %d\n", hInstance );
 985         hInstance = (HINSTANCE)11;
 986     }
 987
 988     HeapFree( GetProcessHeap(), 0, cmdline );
 989     return hInstance;
 990 }
 991
 992
 993 /***********************************************************************
 994  *              GetModuleHandleA         (KERNEL32.@)
 995  *              GetModuleHandle32        (KERNEL.488)
 996  */
 997 HMODULE WINAPI GetModuleHandleA(LPCSTR module)
 998 {
 999     WINE_MODREF *wm;
1000
1001     if ( module == NULL )
1002         wm = exe_modref;
1003     else
1004         wm = MODULE_FindModule( module );
1005
1006     return wm? wm->module : 0;
1007 }
1008
1009 /***********************************************************************
1010  *              GetModuleHandleW (KERNEL32.@)
1011  */
1012 HMODULE WINAPI GetModuleHandleW(LPCWSTR module)
1013 {
1014     HMODULE hModule;
1015     LPSTR modulea = HEAP_strdupWtoA( GetProcessHeap(), 0, module );
1016     hModule = GetModuleHandleA( modulea );
1017     HeapFree( GetProcessHeap(), 0, modulea );
1018     return hModule;
1019 }
1020
1021
1022 /***********************************************************************
1023  *              GetModuleFileNameA      (KERNEL32.@)
1024  *              GetModuleFileName32     (KERNEL.487)
1025  *
1026  * GetModuleFileNameA seems to *always* return the long path;
1027  * it's only GetModuleFileName16 that decides between short/long path
1028  * by checking if exe version >= 4.0.
1029  * (SDK docu doesn't mention this)
1030  */
1031 DWORD WINAPI GetModuleFileNameA(
1032         HMODULE hModule,        /* [in] module handle (32bit) */
1033         LPSTR lpFileName,       /* [out] filenamebuffer */
1034         DWORD size )            /* [in] size of filenamebuffer */
1035 {
1036     WINE_MODREF *wm;
1037
1038     RtlEnterCriticalSection( &loader_section );
1039
1040     lpFileName[0] = 0;
1041     if ((wm = MODULE32_LookupHMODULE( hModule )))
1042         lstrcpynA( lpFileName, wm->filename, size );
1043
1044     RtlLeaveCriticalSection( &loader_section );
1045     TRACE("%s\n", lpFileName );
1046     return strlen(lpFileName);
1047 }
1048
1049
1050 /***********************************************************************
1051  *              GetModuleFileNameW      (KERNEL32.@)
1052  */
1053 DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName,
1054                                    DWORD size )
1055 {
1056     LPSTR fnA = (char*)HeapAlloc( GetProcessHeap(), 0, size );
1057     DWORD res = GetModuleFileNameA( hModule, fnA, size );
1058     if (size > 0 && !MultiByteToWideChar( CP_ACP, 0, fnA, -1, lpFileName, size ))
1059         lpFileName[size-1] = 0;
1060     HeapFree( GetProcessHeap(), 0, fnA );
1061     return res;
1062 }
1063
1064
1065 /***********************************************************************
1066  *           LoadLibraryExA   (KERNEL32.@)
1067  */
1068 HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
1069 {
1070         WINE_MODREF *wm;
1071
1072         if(!libname)
1073         {
1074                 SetLastError(ERROR_INVALID_PARAMETER);
1075                 return 0;
1076         }
1077
1078         if (flags & LOAD_LIBRARY_AS_DATAFILE)
1079         {
1080             char filename[256];
1081             HMODULE hmod = 0;
1082
1083             /* This method allows searching for the 'native' libraries only */
1084             if (SearchPathA( NULL, libname, ".dll", sizeof(filename), filename, NULL ))
1085             {
1086                 /* FIXME: maybe we should use the hfile parameter instead */
1087                 HANDLE hFile = CreateFileA( filename, GENERIC_READ, FILE_SHARE_READ,
1088                                             NULL, OPEN_EXISTING, 0, 0 );
1089                 if (hFile != INVALID_HANDLE_VALUE)
1090                 {
1091                     HANDLE mapping;
1092                     switch (MODULE_GetBinaryType( hFile ))
1093                     {
1094                     case BINARY_PE_EXE:
1095                     case BINARY_PE_DLL:
1096                         mapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
1097                         if (mapping)
1098                         {
1099                             hmod = (HMODULE)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
1100                             CloseHandle( mapping );
1101                         }
1102                         break;
1103                     default:
1104                         break;
1105                     }
1106                     CloseHandle( hFile );
1107                 }
1108                 if (hmod) return (HMODULE)((ULONG_PTR)hmod + 1);
1109             }
1110             flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
1111             /* Fallback to normal behaviour */
1112         }
1113
1114         RtlEnterCriticalSection( &loader_section );
1115
1116         wm = MODULE_LoadLibraryExA( libname, hfile, flags );
1117         if ( wm )
1118         {
1119                 if ( !MODULE_DllProcessAttach( wm, NULL ) )
1120                 {
1121                         WARN_(module)("Attach failed for module '%s'.\n", libname);
1122                         MODULE_FreeLibrary(wm);
1123                         SetLastError(ERROR_DLL_INIT_FAILED);
1124                         wm = NULL;
1125                 }
1126         }
1127
1128         RtlLeaveCriticalSection( &loader_section );
1129         return wm ? wm->module : 0;
1130 }
1131
1132 /***********************************************************************
1133  *      allocate_lib_dir
1134  *
1135  * helper for MODULE_LoadLibraryExA.  Allocate space to hold the directory
1136  * portion of the provided name and put the name in it.
1137  *
1138  */
1139 static LPCSTR allocate_lib_dir(LPCSTR libname)
1140 {
1141     LPCSTR p, pmax;
1142     LPSTR result;
1143     int length;
1144
1145     pmax = libname;
1146     if ((p = strrchr( pmax, '\\' ))) pmax = p + 1;
1147     if ((p = strrchr( pmax, '/' ))) pmax = p + 1; /* Naughty.  MSDN says don't */
1148     if (pmax == libname && pmax[0] && pmax[1] == ':') pmax += 2;
1149
1150     length = pmax - libname;
1151
1152     result = HeapAlloc (GetProcessHeap(), 0, length+1);
1153
1154     if (result)
1155     {
1156         strncpy (result, libname, length);
1157         result [length] = '\0';
1158     }
1159
1160     return result;
1161 }
1162
1163 /***********************************************************************
1164  *      MODULE_LoadLibraryExA   (internal)
1165  *
1166  * Load a PE style module according to the load order.
1167  *
1168  * The HFILE parameter is not used and marked reserved in the SDK. I can
1169  * only guess that it should force a file to be mapped, but I rather
1170  * ignore the parameter because it would be extremely difficult to
1171  * integrate this with different types of module representations.
1172  *
1173  * libdir is used to support LOAD_WITH_ALTERED_SEARCH_PATH during the recursion
1174  *        on this function.  When first called from LoadLibraryExA it will be
1175  *        NULL but thereafter it may point to a buffer containing the path
1176  *        portion of the library name.  Note that the recursion all occurs
1177  *        within a Critical section (see LoadLibraryExA) so the use of a
1178  *        static is acceptable.
1179  *        (We have to use a static variable at some point anyway, to pass the
1180  *        information from BUILTIN32_dlopen through dlopen and the builtin's
1181  *        init function into load_library).
1182  * allocated_libdir is TRUE in the stack frame that allocated libdir
1183  */
1184 WINE_MODREF *MODULE_LoadLibraryExA( LPCSTR libname, HFILE hfile, DWORD flags )
1185 {
1186         DWORD err = GetLastError();
1187         WINE_MODREF *pwm;
1188         int i;
1189         enum loadorder_type loadorder[LOADORDER_NTYPES];
1190         LPSTR filename, p;
1191         const char *filetype = "";
1192         DWORD found;
1193         BOOL allocated_libdir = FALSE;
1194         static LPCSTR libdir = NULL; /* See above */
1195
1196         if ( !libname ) return NULL;
1197
1198         filename = HeapAlloc ( GetProcessHeap(), 0, MAX_PATH + 1 );
1199         if ( !filename ) return NULL;
1200         *filename = 0; /* Just in case we don't set it before goto error */
1201
1202         RtlEnterCriticalSection( &loader_section );
1203
1204         if ((flags & LOAD_WITH_ALTERED_SEARCH_PATH) && FILE_contains_path(libname))
1205         {
1206             if (!(libdir = allocate_lib_dir(libname))) goto error;
1207             allocated_libdir = TRUE;
1208         }
1209
1210         if (!libdir || allocated_libdir)
1211             found = SearchPathA(NULL, libname, ".dll", MAX_PATH, filename, NULL);
1212         else
1213             found = DIR_SearchAlternatePath(libdir, libname, ".dll", MAX_PATH, filename, NULL);
1214
1215         /* build the modules filename */
1216         if (!found)
1217         {
1218             if ( ! GetSystemDirectoryA ( filename, MAX_PATH ) )
1219                 goto error;
1220
1221             /* if the library name contains a path and can not be found,
1222              * return an error.
1223              * exception: if the path is the system directory, proceed,
1224              * so that modules which are not PE modules can be loaded.
1225              * If the library name does not contain a path and can not
1226              * be found, assume the system directory is meant */
1227
1228             if ( ! FILE_strncasecmp ( filename, libname, strlen ( filename ) ))
1229                 strcpy ( filename, libname );
1230             else
1231             {
1232                 if (FILE_contains_path(libname)) goto error;
1233                 strcat ( filename, "\\" );
1234                 strcat ( filename, libname );
1235             }
1236
1237             /* if the filename doesn't have an extension, append .DLL */
1238             if (!(p = strrchr( filename, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
1239                 strcat( filename, ".dll" );
1240         }
1241
1242         /* Check for already loaded module */
1243         if (!(pwm = MODULE_FindModule(filename)) && !FILE_contains_path(libname))
1244         {
1245             LPSTR       fn = HeapAlloc ( GetProcessHeap(), 0, MAX_PATH + 1 );
1246             if (fn)
1247             {
1248                 /* since the default loading mechanism uses a more detailed algorithm
1249                  * than SearchPath (like using PATH, which can even be modified between
1250                  * two attempts of loading the same DLL), the look-up above (with
1251                  * SearchPath) can have put the file in system directory, whereas it
1252                  * has already been loaded but with a different path. So do a specific
1253                  * look-up with filename (without any path)
1254                  */
1255                 strcpy ( fn, libname );
1256                 /* if the filename doesn't have an extension append .DLL */
1257                 if (!strrchr( fn, '.')) strcat( fn, ".dll" );
1258                 if ((pwm = MODULE_FindModule( fn )) != NULL)
1259                    strcpy( filename, fn );
1260                 HeapFree( GetProcessHeap(), 0, fn );
1261             }
1262         }
1263         if (pwm)
1264         {
1265                 if(!(pwm->flags & WINE_MODREF_MARKER))
1266                         pwm->refCount++;
1267
1268                 if ((pwm->flags & WINE_MODREF_DONT_RESOLVE_REFS) &&
1269                     !(flags & DONT_RESOLVE_DLL_REFERENCES))
1270                 {
1271                     pwm->flags &= ~WINE_MODREF_DONT_RESOLVE_REFS;
1272                     PE_fixup_imports( pwm );
1273                 }
1274                 TRACE("Already loaded module '%s' at 0x%08x, count=%d\n", filename, pwm->module, pwm->refCount);
1275                 if (allocated_libdir)
1276                 {
1277                     HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1278                     libdir = NULL;
1279                 }
1280                 RtlLeaveCriticalSection( &loader_section );
1281                 HeapFree ( GetProcessHeap(), 0, filename );
1282                 return pwm;
1283         }
1284
1285         MODULE_GetLoadOrder( loadorder, filename, TRUE);
1286
1287         for(i = 0; i < LOADORDER_NTYPES; i++)
1288         {
1289                 if (loadorder[i] == LOADORDER_INVALID) break;
1290                 SetLastError( ERROR_FILE_NOT_FOUND );
1291
1292                 switch(loadorder[i])
1293                 {
1294                 case LOADORDER_DLL:
1295                         TRACE("Trying native dll '%s'\n", filename);
1296                         pwm = PE_LoadLibraryExA(filename, flags);
1297                         filetype = "native";
1298                         break;
1299
1300                 case LOADORDER_SO:
1301                         TRACE("Trying so-library '%s'\n", filename);
1302                         pwm = ELF_LoadLibraryExA(filename, flags);
1303                         filetype = "so";
1304                         break;
1305
1306                 case LOADORDER_BI:
1307                         TRACE("Trying built-in '%s'\n", filename);
1308                         pwm = BUILTIN32_LoadLibraryExA(filename, flags);
1309                         filetype = "builtin";
1310                         break;
1311
1312                 default:
1313                         pwm = NULL;
1314                         break;
1315                 }
1316
1317                 if(pwm)
1318                 {
1319                         /* Initialize DLL just loaded */
1320                         TRACE("Loaded module '%s' at 0x%08x\n", filename, pwm->module);
1321                         if (!TRACE_ON(module))
1322                             TRACE_(loaddll)("Loaded module '%s' : %s\n", filename, filetype);
1323                         /* Set the refCount here so that an attach failure will */
1324                         /* decrement the dependencies through the MODULE_FreeLibrary call. */
1325                         pwm->refCount++;
1326
1327                         if (allocated_libdir)
1328                         {
1329                             HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1330                             libdir = NULL;
1331                         }
1332                         RtlLeaveCriticalSection( &loader_section );
1333                         SetLastError( err );  /* restore last error */
1334                         HeapFree ( GetProcessHeap(), 0, filename );
1335                         return pwm;
1336                 }
1337
1338                 if(GetLastError() != ERROR_FILE_NOT_FOUND)
1339                 {
1340                     ERR("Loading of %s DLL %s failed (error %ld), check this file.\n",
1341                         filetype, filename, GetLastError());
1342                     break;
1343                 }
1344         }
1345
1346  error:
1347         if (allocated_libdir)
1348         {
1349             HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1350             libdir = NULL;
1351         }
1352         RtlLeaveCriticalSection( &loader_section );
1353         WARN("Failed to load module '%s'; error=%ld\n", filename, GetLastError());
1354         HeapFree ( GetProcessHeap(), 0, filename );
1355         return NULL;
1356 }
1357
1358 /***********************************************************************
1359  *           LoadLibraryA         (KERNEL32.@)
1360  */
1361 HMODULE WINAPI LoadLibraryA(LPCSTR libname) {
1362         return LoadLibraryExA(libname,0,0);
1363 }
1364
1365 /***********************************************************************
1366  *           LoadLibraryW         (KERNEL32.@)
1367  */
1368 HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW)
1369 {
1370     return LoadLibraryExW(libnameW,0,0);
1371 }
1372
1373 /***********************************************************************
1374  *           LoadLibrary32        (KERNEL.452)
1375  *           LoadSystemLibrary32  (KERNEL.482)
1376  */
1377 HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
1378 {
1379     HMODULE hModule;
1380     DWORD count;
1381
1382     ReleaseThunkLock( &count );
1383     hModule = LoadLibraryA( libname );
1384     RestoreThunkLock( count );
1385     return hModule;
1386 }
1387
1388 /***********************************************************************
1389  *           LoadLibraryExW       (KERNEL32.@)
1390  */
1391 HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW,HANDLE hfile,DWORD flags)
1392 {
1393     LPSTR libnameA = HEAP_strdupWtoA( GetProcessHeap(), 0, libnameW );
1394     HMODULE ret = LoadLibraryExA( libnameA , hfile, flags );
1395
1396     HeapFree( GetProcessHeap(), 0, libnameA );
1397     return ret;
1398 }
1399
1400 /***********************************************************************
1401  *           MODULE_FlushModrefs
1402  *
1403  * NOTE: Assumes that the process critical section is held!
1404  *
1405  * Remove all unused modrefs and call the internal unloading routines
1406  * for the library type.
1407  */
1408 static void MODULE_FlushModrefs(void)
1409 {
1410         WINE_MODREF *wm, *next;
1411
1412         for(wm = MODULE_modref_list; wm; wm = next)
1413         {
1414                 next = wm->next;
1415
1416                 if(wm->refCount)
1417                         continue;
1418
1419                 /* Unlink this modref from the chain */
1420                 if(wm->next)
1421                         wm->next->prev = wm->prev;
1422                 if(wm->prev)
1423                         wm->prev->next = wm->next;
1424                 if(wm == MODULE_modref_list)
1425                         MODULE_modref_list = wm->next;
1426
1427                 TRACE(" unloading %s\n", wm->filename);
1428                 if (wm->dlhandle) wine_dll_unload( wm->dlhandle );
1429                 else UnmapViewOfFile( (LPVOID)wm->module );
1430                 FreeLibrary16(wm->hDummyMod);
1431                 HeapFree( GetProcessHeap(), 0, wm->deps );
1432                 HeapFree( GetProcessHeap(), 0, wm );
1433         }
1434 }
1435
1436 /***********************************************************************
1437  *           FreeLibrary   (KERNEL32.@)
1438  *           FreeLibrary32 (KERNEL.486)
1439  */
1440 BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
1441 {
1442     BOOL retv = FALSE;
1443     WINE_MODREF *wm;
1444
1445     if (!hLibModule)
1446     {
1447         SetLastError( ERROR_INVALID_HANDLE );
1448         return FALSE;
1449     }
1450
1451     if ((ULONG_PTR)hLibModule & 1)
1452     {
1453         /* this is a LOAD_LIBRARY_AS_DATAFILE module */
1454         char *ptr = (char *)hLibModule - 1;
1455         UnmapViewOfFile( ptr );
1456         return TRUE;
1457     }
1458
1459     RtlEnterCriticalSection( &loader_section );
1460     free_lib_count++;
1461
1462     if ((wm = MODULE32_LookupHMODULE( hLibModule ))) retv = MODULE_FreeLibrary( wm );
1463
1464     free_lib_count--;
1465     RtlLeaveCriticalSection( &loader_section );
1466
1467     return retv;
1468 }
1469
1470 /***********************************************************************
1471  *           MODULE_DecRefCount
1472  *
1473  * NOTE: Assumes that the process critical section is held!
1474  */
1475 static void MODULE_DecRefCount( WINE_MODREF *wm )
1476 {
1477     int i;
1478
1479     if ( wm->flags & WINE_MODREF_MARKER )
1480         return;
1481
1482     if ( wm->refCount <= 0 )
1483         return;
1484
1485     --wm->refCount;
1486     TRACE("(%s) refCount: %d\n", wm->modname, wm->refCount );
1487
1488     if ( wm->refCount == 0 )
1489     {
1490         wm->flags |= WINE_MODREF_MARKER;
1491
1492         for ( i = 0; i < wm->nDeps; i++ )
1493             if ( wm->deps[i] )
1494                 MODULE_DecRefCount( wm->deps[i] );
1495
1496         wm->flags &= ~WINE_MODREF_MARKER;
1497     }
1498 }
1499
1500 /***********************************************************************
1501  *           MODULE_FreeLibrary
1502  *
1503  * NOTE: Assumes that the process critical section is held!
1504  */
1505 BOOL MODULE_FreeLibrary( WINE_MODREF *wm )
1506 {
1507     TRACE("(%s) - START\n", wm->modname );
1508
1509     /* Recursively decrement reference counts */
1510     MODULE_DecRefCount( wm );
1511
1512     /* Call process detach notifications */
1513     if ( free_lib_count <= 1 )
1514     {
1515         MODULE_DllProcessDetach( FALSE, NULL );
1516         SERVER_START_REQ( unload_dll )
1517         {
1518             req->base = (void *)wm->module;
1519             wine_server_call( req );
1520         }
1521         SERVER_END_REQ;
1522         MODULE_FlushModrefs();
1523     }
1524
1525     TRACE("END\n");
1526
1527     return TRUE;
1528 }
1529
1530
1531 /***********************************************************************
1532  *           FreeLibraryAndExitThread (KERNEL32.@)
1533  */
1534 VOID WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
1535 {
1536     FreeLibrary(hLibModule);
1537     ExitThread(dwExitCode);
1538 }
1539
1540 /***********************************************************************
1541  *           PrivateLoadLibrary       (KERNEL32.@)
1542  *
1543  * FIXME: rough guesswork, don't know what "Private" means
1544  */
1545 HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
1546 {
1547     return LoadLibrary16(libname);
1548 }
1549
1550
1551
1552 /***********************************************************************
1553  *           PrivateFreeLibrary       (KERNEL32.@)
1554  *
1555  * FIXME: rough guesswork, don't know what "Private" means
1556  */
1557 void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
1558 {
1559     FreeLibrary16(handle);
1560 }
1561
1562
1563 /***********************************************************************
1564  *           GetProcAddress16   (KERNEL32.37)
1565  * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
1566  */
1567 FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
1568 {
1569     if (!hModule) {
1570         WARN("hModule may not be 0!\n");
1571         return (FARPROC16)0;
1572     }
1573     if (HIWORD(hModule))
1574     {
1575         WARN("hModule is Win32 handle (%08x)\n", hModule );
1576         return (FARPROC16)0;
1577     }
1578     return GetProcAddress16( LOWORD(hModule), name );
1579 }
1580
1581 /***********************************************************************
1582  *           GetProcAddress   (KERNEL.50)
1583  */
1584 FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name )
1585 {
1586     WORD ordinal;
1587     FARPROC16 ret;
1588
1589     if (!hModule) hModule = GetCurrentTask();
1590     hModule = GetExePtr( hModule );
1591
1592     if (HIWORD(name) != 0)
1593     {
1594         ordinal = NE_GetOrdinal( hModule, name );
1595         TRACE("%04x '%s'\n", hModule, name );
1596     }
1597     else
1598     {
1599         ordinal = LOWORD(name);
1600         TRACE("%04x %04x\n", hModule, ordinal );
1601     }
1602     if (!ordinal) return (FARPROC16)0;
1603
1604     ret = NE_GetEntryPoint( hModule, ordinal );
1605
1606     TRACE("returning %08x\n", (UINT)ret );
1607     return ret;
1608 }
1609
1610
1611 /***********************************************************************
1612  *           GetProcAddress             (KERNEL32.@)
1613  */
1614 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
1615 {
1616     return MODULE_GetProcAddress( hModule, function, TRUE );
1617 }
1618
1619 /***********************************************************************
1620  *           GetProcAddress32                   (KERNEL.453)
1621  */
1622 FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function )
1623 {
1624     return MODULE_GetProcAddress( hModule, function, FALSE );
1625 }
1626
1627 /***********************************************************************
1628  *           MODULE_GetProcAddress              (internal)
1629  */
1630 FARPROC MODULE_GetProcAddress(
1631         HMODULE hModule,        /* [in] current module handle */
1632         LPCSTR function,        /* [in] function to be looked up */
1633         BOOL snoop )
1634 {
1635     WINE_MODREF *wm;
1636     FARPROC     retproc = 0;
1637
1638     if (HIWORD(function))
1639         TRACE_(win32)("(%08lx,%s)\n",(DWORD)hModule,function);
1640     else
1641         TRACE_(win32)("(%08lx,%p)\n",(DWORD)hModule,function);
1642
1643     RtlEnterCriticalSection( &loader_section );
1644     if ((wm = MODULE32_LookupHMODULE( hModule )))
1645     {
1646         retproc = wm->find_export( wm, function, snoop );
1647         if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND);
1648     }
1649     RtlLeaveCriticalSection( &loader_section );
1650     return retproc;
1651 }
1652
1653
1654 /***************************************************************************
1655  *              HasGPHandler                    (KERNEL.338)
1656  */
1657
1658 #include "pshpack1.h"
1659 typedef struct _GPHANDLERDEF
1660 {
1661     WORD selector;
1662     WORD rangeStart;
1663     WORD rangeEnd;
1664     WORD handler;
1665 } GPHANDLERDEF;
1666 #include "poppack.h"
1667
1668 SEGPTR WINAPI HasGPHandler16( SEGPTR address )
1669 {
1670     HMODULE16 hModule;
1671     int gpOrdinal;
1672     SEGPTR gpPtr;
1673     GPHANDLERDEF *gpHandler;
1674
1675     if (    (hModule = FarGetOwner16( SELECTOROF(address) )) != 0
1676          && (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0
1677          && (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0
1678          && !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) )
1679          && (gpHandler = MapSL( gpPtr )) != NULL )
1680     {
1681         while (gpHandler->selector)
1682         {
1683             if (    SELECTOROF(address) == gpHandler->selector
1684                  && OFFSETOF(address)   >= gpHandler->rangeStart
1685                  && OFFSETOF(address)   <  gpHandler->rangeEnd  )
1686                 return MAKESEGPTR( gpHandler->selector, gpHandler->handler );
1687             gpHandler++;
1688         }
1689     }
1690
1691     return 0;
1692 }
1693