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 "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <fcntl.h>
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <sys/types.h>
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33 #include "wine/winbase16.h"
  34 #include "winerror.h"
  35 #include "heap.h"
  36 #include "file.h"
  37 #include "module.h"
  38 #include "wine/debug.h"
  39 #include "wine/server.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(module);
  42 WINE_DECLARE_DEBUG_CHANNEL(win32);
  43 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
  44
  45 WINE_MODREF *MODULE_modref_list = NULL;
  46
  47 static WINE_MODREF *exe_modref;
  48 static int free_lib_count;   /* recursion depth of FreeLibrary calls */
  49 static int process_detaching;  /* set on process detach to avoid deadlocks with thread detach */
  50
  51 static CRITICAL_SECTION loader_section = CRITICAL_SECTION_INIT( "loader_section" );
  52
  53 /***********************************************************************
  54  *           wait_input_idle
  55  *
  56  * Wrapper to call WaitForInputIdle USER function
  57  */
  58 typedef DWORD (WINAPI *WaitForInputIdle_ptr)( HANDLE hProcess, DWORD dwTimeOut );
  59
  60 static DWORD wait_input_idle( HANDLE process, DWORD timeout )
  61 {
  62     HMODULE mod = GetModuleHandleA( "user32.dll" );
  63     if (mod)
  64     {
  65         WaitForInputIdle_ptr ptr = (WaitForInputIdle_ptr)GetProcAddress( mod, "WaitForInputIdle" );
  66         if (ptr) return ptr( process, timeout );
  67     }
  68     return 0;
  69 }
  70
  71
  72 /*************************************************************************
  73  *              MODULE32_LookupHMODULE
  74  * looks for the referenced HMODULE in the current process
  75  * NOTE: Assumes that the process critical section is held!
  76  */
  77 static WINE_MODREF *MODULE32_LookupHMODULE( HMODULE hmod )
  78 {
  79     WINE_MODREF *wm;
  80
  81     if (!hmod)
  82         return exe_modref;
  83
  84     if (!HIWORD(hmod)) {
  85         ERR("tried to lookup 0x%04x in win32 module handler!\n",hmod);
  86         SetLastError( ERROR_INVALID_HANDLE );
  87         return NULL;
  88     }
  89     for ( wm = MODULE_modref_list; wm; wm=wm->next )
  90         if (wm->module == hmod)
  91             return wm;
  92     SetLastError( ERROR_INVALID_HANDLE );
  93     return NULL;
  94 }
  95
  96 /*************************************************************************
  97  *              MODULE_AllocModRef
  98  *
  99  * Allocate a WINE_MODREF structure and add it to the process list
 100  * NOTE: Assumes that the process critical section is held!
 101  */
 102 WINE_MODREF *MODULE_AllocModRef( HMODULE hModule, LPCSTR filename )
 103 {
 104     WINE_MODREF *wm;
 105
 106     DWORD long_len = strlen( filename );
 107     DWORD short_len = GetShortPathNameA( filename, NULL, 0 );
 108
 109     if ((wm = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
 110                          sizeof(*wm) + long_len + short_len + 1 )))
 111     {
 112         wm->module = hModule;
 113         wm->tlsindex = -1;
 114
 115         wm->filename = wm->data;
 116         memcpy( wm->filename, filename, long_len + 1 );
 117         if ((wm->modname = strrchr( wm->filename, '\\' ))) wm->modname++;
 118         else wm->modname = wm->filename;
 119
 120         wm->short_filename = wm->filename + long_len + 1;
 121         GetShortPathNameA( wm->filename, wm->short_filename, short_len + 1 );
 122         if ((wm->short_modname = strrchr( wm->short_filename, '\\' ))) wm->short_modname++;
 123         else wm->short_modname = wm->short_filename;
 124
 125         wm->next = MODULE_modref_list;
 126         if (wm->next) wm->next->prev = wm;
 127         MODULE_modref_list = wm;
 128
 129         if (!(RtlImageNtHeader(hModule)->FileHeader.Characteristics & IMAGE_FILE_DLL))
 130         {
 131             if (!exe_modref) exe_modref = wm;
 132             else FIXME( "Trying to load second .EXE file: %s\n", filename );
 133         }
 134     }
 135     return wm;
 136 }
 137
 138 /*************************************************************************
 139  *              MODULE_InitDLL
 140  */
 141 static BOOL MODULE_InitDLL( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
 142 {
 143     BOOL retv = TRUE;
 144
 145     static LPCSTR typeName[] = { "PROCESS_DETACH", "PROCESS_ATTACH",
 146                                  "THREAD_ATTACH", "THREAD_DETACH" };
 147     assert( wm );
 148
 149     /* Skip calls for modules loaded with special load flags */
 150
 151     if (wm->flags & WINE_MODREF_DONT_RESOLVE_REFS) return TRUE;
 152
 153     TRACE("(%s,%s,%p) - CALL\n", wm->modname, typeName[type], lpReserved );
 154
 155     /* Call the initialization routine */
 156     retv = PE_InitDLL( wm->module, type, lpReserved );
 157
 158     /* The state of the module list may have changed due to the call
 159        to PE_InitDLL. We cannot assume that this module has not been
 160        deleted.  */
 161     TRACE("(%p,%s,%p) - RETURN %d\n", wm, typeName[type], lpReserved, retv );
 162
 163     return retv;
 164 }
 165
 166 /*************************************************************************
 167  *              MODULE_DllProcessAttach
 168  *
 169  * Send the process attach notification to all DLLs the given module
 170  * depends on (recursively). This is somewhat complicated due to the fact that
 171  *
 172  * - we have to respect the module dependencies, i.e. modules implicitly
 173  *   referenced by another module have to be initialized before the module
 174  *   itself can be initialized
 175  *
 176  * - the initialization routine of a DLL can itself call LoadLibrary,
 177  *   thereby introducing a whole new set of dependencies (even involving
 178  *   the 'old' modules) at any time during the whole process
 179  *
 180  * (Note that this routine can be recursively entered not only directly
 181  *  from itself, but also via LoadLibrary from one of the called initialization
 182  *  routines.)
 183  *
 184  * Furthermore, we need to rearrange the main WINE_MODREF list to allow
 185  * the process *detach* notifications to be sent in the correct order.
 186  * This must not only take into account module dependencies, but also
 187  * 'hidden' dependencies created by modules calling LoadLibrary in their
 188  * attach notification routine.
 189  *
 190  * The strategy is rather simple: we move a WINE_MODREF to the head of the
 191  * list after the attach notification has returned.  This implies that the
 192  * detach notifications are called in the reverse of the sequence the attach
 193  * notifications *returned*.
 194  */
 195 BOOL MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved )
 196 {
 197     BOOL retv = TRUE;
 198     int i;
 199
 200     RtlEnterCriticalSection( &loader_section );
 201
 202     if (!wm)
 203     {
 204         wm = exe_modref;
 205         PE_InitTls();
 206     }
 207     assert( wm );
 208
 209     /* prevent infinite recursion in case of cyclical dependencies */
 210     if (    ( wm->flags & WINE_MODREF_MARKER )
 211          || ( wm->flags & WINE_MODREF_PROCESS_ATTACHED ) )
 212         goto done;
 213
 214     TRACE("(%s,%p) - START\n", wm->modname, lpReserved );
 215
 216     /* Tag current MODREF to prevent recursive loop */
 217     wm->flags |= WINE_MODREF_MARKER;
 218
 219     /* Recursively attach all DLLs this one depends on */
 220     for ( i = 0; retv && i < wm->nDeps; i++ )
 221         if ( wm->deps[i] )
 222             retv = MODULE_DllProcessAttach( wm->deps[i], lpReserved );
 223
 224     /* Call DLL entry point */
 225     if ( retv )
 226     {
 227         retv = MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved );
 228         if ( retv )
 229             wm->flags |= WINE_MODREF_PROCESS_ATTACHED;
 230     }
 231
 232     /* Re-insert MODREF at head of list */
 233     if ( retv && wm->prev )
 234     {
 235         wm->prev->next = wm->next;
 236         if ( wm->next ) wm->next->prev = wm->prev;
 237
 238         wm->prev = NULL;
 239         wm->next = MODULE_modref_list;
 240         MODULE_modref_list = wm->next->prev = wm;
 241     }
 242
 243     /* Remove recursion flag */
 244     wm->flags &= ~WINE_MODREF_MARKER;
 245
 246     TRACE("(%s,%p) - END\n", wm->modname, lpReserved );
 247
 248  done:
 249     RtlLeaveCriticalSection( &loader_section );
 250     return retv;
 251 }
 252
 253 /*************************************************************************
 254  *              MODULE_DllProcessDetach
 255  *
 256  * Send DLL process detach notifications.  See the comment about calling
 257  * sequence at MODULE_DllProcessAttach.  Unless the bForceDetach flag
 258  * is set, only DLLs with zero refcount are notified.
 259  */
 260 void MODULE_DllProcessDetach( BOOL bForceDetach, LPVOID lpReserved )
 261 {
 262     WINE_MODREF *wm;
 263
 264     RtlEnterCriticalSection( &loader_section );
 265     if (bForceDetach) process_detaching = 1;
 266     do
 267     {
 268         for ( wm = MODULE_modref_list; wm; wm = wm->next )
 269         {
 270             /* Check whether to detach this DLL */
 271             if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 272                 continue;
 273             if ( wm->refCount > 0 && !bForceDetach )
 274                 continue;
 275
 276             /* Call detach notification */
 277             wm->flags &= ~WINE_MODREF_PROCESS_ATTACHED;
 278             MODULE_InitDLL( wm, DLL_PROCESS_DETACH, lpReserved );
 279
 280             /* Restart at head of WINE_MODREF list, as entries might have
 281                been added and/or removed while performing the call ... */
 282             break;
 283         }
 284     } while ( wm );
 285
 286     RtlLeaveCriticalSection( &loader_section );
 287 }
 288
 289 /*************************************************************************
 290  *              MODULE_DllThreadAttach
 291  *
 292  * Send DLL thread attach notifications. These are sent in the
 293  * reverse sequence of process detach notification.
 294  *
 295  */
 296 void MODULE_DllThreadAttach( LPVOID lpReserved )
 297 {
 298     WINE_MODREF *wm;
 299
 300     /* don't do any attach calls if process is exiting */
 301     if (process_detaching) return;
 302     /* FIXME: there is still a race here */
 303
 304     RtlEnterCriticalSection( &loader_section );
 305
 306     PE_InitTls();
 307
 308     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 309         if ( !wm->next )
 310             break;
 311
 312     for ( ; wm; wm = wm->prev )
 313     {
 314         if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 315             continue;
 316         if ( wm->flags & WINE_MODREF_NO_DLL_CALLS )
 317             continue;
 318
 319         MODULE_InitDLL( wm, DLL_THREAD_ATTACH, lpReserved );
 320     }
 321
 322     RtlLeaveCriticalSection( &loader_section );
 323 }
 324
 325 /*************************************************************************
 326  *              MODULE_DllThreadDetach
 327  *
 328  * Send DLL thread detach notifications. These are sent in the
 329  * same sequence as process detach notification.
 330  *
 331  */
 332 void MODULE_DllThreadDetach( LPVOID lpReserved )
 333 {
 334     WINE_MODREF *wm;
 335
 336     /* don't do any detach calls if process is exiting */
 337     if (process_detaching) return;
 338     /* FIXME: there is still a race here */
 339
 340     RtlEnterCriticalSection( &loader_section );
 341
 342     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 343     {
 344         if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 345             continue;
 346         if ( wm->flags & WINE_MODREF_NO_DLL_CALLS )
 347             continue;
 348
 349         MODULE_InitDLL( wm, DLL_THREAD_DETACH, lpReserved );
 350     }
 351
 352     RtlLeaveCriticalSection( &loader_section );
 353 }
 354
 355 /****************************************************************************
 356  *              DisableThreadLibraryCalls (KERNEL32.@)
 357  *
 358  * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
 359  */
 360 BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
 361 {
 362     WINE_MODREF *wm;
 363     BOOL retval = TRUE;
 364
 365     RtlEnterCriticalSection( &loader_section );
 366
 367     wm = MODULE32_LookupHMODULE( hModule );
 368     if ( !wm )
 369         retval = FALSE;
 370     else
 371         wm->flags |= WINE_MODREF_NO_DLL_CALLS;
 372
 373     RtlLeaveCriticalSection( &loader_section );
 374
 375     return retval;
 376 }
 377
 378
 379 /***********************************************************************
 380  *           MODULE_CreateDummyModule
 381  *
 382  * Create a dummy NE module for Win32 or Winelib.
 383  */
 384 HMODULE16 MODULE_CreateDummyModule( LPCSTR filename, HMODULE module32 )
 385 {
 386     HMODULE16 hModule;
 387     NE_MODULE *pModule;
 388     SEGTABLEENTRY *pSegment;
 389     char *pStr,*s;
 390     unsigned int len;
 391     const char* basename;
 392     OFSTRUCT *ofs;
 393     int of_size, size;
 394
 395     /* Extract base filename */
 396     basename = strrchr(filename, '\\');
 397     if (!basename) basename = filename;
 398     else basename++;
 399     len = strlen(basename);
 400     if ((s = strchr(basename, '.'))) len = s - basename;
 401
 402     /* Allocate module */
 403     of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
 404                     + strlen(filename) + 1;
 405     size = sizeof(NE_MODULE) +
 406                  /* loaded file info */
 407                  ((of_size + 3) & ~3) +
 408                  /* segment table: DS,CS */
 409                  2 * sizeof(SEGTABLEENTRY) +
 410                  /* name table */
 411                  len + 2 +
 412                  /* several empty tables */
 413                  8;
 414
 415     hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
 416     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 417
 418     FarSetOwner16( hModule, hModule );
 419     pModule = (NE_MODULE *)GlobalLock16( hModule );
 420
 421     /* Set all used entries */
 422     pModule->magic            = IMAGE_OS2_SIGNATURE;
 423     pModule->count            = 1;
 424     pModule->next             = 0;
 425     pModule->flags            = 0;
 426     pModule->dgroup           = 0;
 427     pModule->ss               = 1;
 428     pModule->cs               = 2;
 429     pModule->heap_size        = 0;
 430     pModule->stack_size       = 0;
 431     pModule->seg_count        = 2;
 432     pModule->modref_count     = 0;
 433     pModule->nrname_size      = 0;
 434     pModule->fileinfo         = sizeof(NE_MODULE);
 435     pModule->os_flags         = NE_OSFLAGS_WINDOWS;
 436     pModule->self             = hModule;
 437     pModule->module32         = module32;
 438
 439     /* Set version and flags */
 440     if (module32)
 441     {
 442         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 );
 443         pModule->expected_version = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
 444                                      (nt->OptionalHeader.MinorSubsystemVersion & 0xff);
 445         pModule->flags |= NE_FFLAGS_WIN32;
 446         if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
 447             pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
 448     }
 449
 450     /* Set loaded file information */
 451     ofs = (OFSTRUCT *)(pModule + 1);
 452     memset( ofs, 0, of_size );
 453     ofs->cBytes = of_size < 256 ? of_size : 255;   /* FIXME */
 454     strcpy( ofs->szPathName, filename );
 455
 456     pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
 457     pModule->seg_table = (int)pSegment - (int)pModule;
 458     /* Data segment */
 459     pSegment->size    = 0;
 460     pSegment->flags   = NE_SEGFLAGS_DATA;
 461     pSegment->minsize = 0x1000;
 462     pSegment++;
 463     /* Code segment */
 464     pSegment->flags   = 0;
 465     pSegment++;
 466
 467     /* Module name */
 468     pStr = (char *)pSegment;
 469     pModule->name_table = (int)pStr - (int)pModule;
 470     assert(len<256);
 471     *pStr = len;
 472     lstrcpynA( pStr+1, basename, len+1 );
 473     pStr += len+2;
 474
 475     /* All tables zero terminated */
 476     pModule->res_table = pModule->import_table = pModule->entry_table =
 477                 (int)pStr - (int)pModule;
 478
 479     NE_RegisterModule( pModule );
 480     return hModule;
 481 }
 482
 483
 484 /**********************************************************************
 485  *          MODULE_FindModule
 486  *
 487  * Find a (loaded) win32 module depending on path
 488  *
 489  * RETURNS
 490  *      the module handle if found
 491  *      0 if not
 492  */
 493 WINE_MODREF *MODULE_FindModule(
 494         LPCSTR path     /* [in] pathname of module/library to be found */
 495 ) {
 496     WINE_MODREF *wm;
 497     char dllname[260], *p;
 498
 499     /* Append .DLL to name if no extension present */
 500     strcpy( dllname, path );
 501     if (!(p = strrchr( dllname, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 502             strcat( dllname, ".DLL" );
 503
 504     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 505     {
 506         if ( !FILE_strcasecmp( dllname, wm->modname ) )
 507             break;
 508         if ( !FILE_strcasecmp( dllname, wm->filename ) )
 509             break;
 510         if ( !FILE_strcasecmp( dllname, wm->short_modname ) )
 511             break;
 512         if ( !FILE_strcasecmp( dllname, wm->short_filename ) )
 513             break;
 514     }
 515
 516     return wm;
 517 }
 518
 519
 520 /* Check whether a file is an OS/2 or a very old Windows executable
 521  * by testing on import of KERNEL.
 522  *
 523  * FIXME: is reading the module imports the only way of discerning
 524  *        old Windows binaries from OS/2 ones ? At least it seems so...
 525  */
 526 static enum binary_type MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz,
 527                                                  const IMAGE_OS2_HEADER *ne)
 528 {
 529     DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
 530     enum binary_type ret = BINARY_OS216;
 531     LPWORD modtab = NULL;
 532     LPSTR nametab = NULL;
 533     DWORD len;
 534     int i;
 535
 536     /* read modref table */
 537     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
 538       || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
 539       || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
 540       || (len != ne->ne_cmod*sizeof(WORD)) )
 541         goto broken;
 542
 543     /* read imported names table */
 544     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
 545       || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
 546       || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
 547       || (len != ne->ne_enttab - ne->ne_imptab) )
 548         goto broken;
 549
 550     for (i=0; i < ne->ne_cmod; i++)
 551     {
 552         LPSTR module = &nametab[modtab[i]];
 553         TRACE("modref: %.*s\n", module[0], &module[1]);
 554         if (!(strncmp(&module[1], "KERNEL", module[0])))
 555         { /* very old Windows file */
 556             MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
 557             ret = BINARY_WIN16;
 558             goto good;
 559         }
 560     }
 561
 562 broken:
 563     ERR("Hmm, an error occurred. Is this binary file broken ?\n");
 564
 565 good:
 566     HeapFree( GetProcessHeap(), 0, modtab);
 567     HeapFree( GetProcessHeap(), 0, nametab);
 568     SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
 569     return ret;
 570 }
 571
 572 /***********************************************************************
 573  *           MODULE_GetBinaryType
 574  */
 575 enum binary_type MODULE_GetBinaryType( HANDLE hfile )
 576 {
 577     union
 578     {
 579         struct
 580         {
 581             unsigned char magic[4];
 582             unsigned char ignored[12];
 583             unsigned short type;
 584         } elf;
 585         IMAGE_DOS_HEADER mz;
 586     } header;
 587
 588     char magic[4];
 589     DWORD len;
 590
 591     /* Seek to the start of the file and read the header information. */
 592     if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1)
 593         return BINARY_UNKNOWN;
 594     if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header))
 595         return BINARY_UNKNOWN;
 596
 597     if (!memcmp( header.elf.magic, "\177ELF", 4 ))
 598     {
 599         /* FIXME: we don't bother to check byte order, architecture, etc. */
 600         switch(header.elf.type)
 601         {
 602         case 2: return BINARY_UNIX_EXE;
 603         case 3: return BINARY_UNIX_LIB;
 604         }
 605         return BINARY_UNKNOWN;
 606     }
 607
 608     /* Not ELF, try DOS */
 609
 610     if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
 611     {
 612         /* We do have a DOS image so we will now try to seek into
 613          * the file by the amount indicated by the field
 614          * "Offset to extended header" and read in the
 615          * "magic" field information at that location.
 616          * This will tell us if there is more header information
 617          * to read or not.
 618          */
 619         /* But before we do we will make sure that header
 620          * structure encompasses the "Offset to extended header"
 621          * field.
 622          */
 623         if ((header.mz.e_cparhdr << 4) < sizeof(IMAGE_DOS_HEADER))
 624             return BINARY_DOS;
 625         if (header.mz.e_crlc && (header.mz.e_lfarlc < sizeof(IMAGE_DOS_HEADER)))
 626             return BINARY_DOS;
 627         if (header.mz.e_lfanew < sizeof(IMAGE_DOS_HEADER))
 628             return BINARY_DOS;
 629         if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1)
 630             return BINARY_DOS;
 631         if (!ReadFile( hfile, magic, sizeof(magic), &len, NULL ) || len != sizeof(magic))
 632             return BINARY_DOS;
 633
 634         /* Reading the magic field succeeded so
 635          * we will try to determine what type it is.
 636          */
 637         if (!memcmp( magic, "PE\0\0", 4 ))
 638         {
 639             IMAGE_FILE_HEADER FileHeader;
 640
 641             if (ReadFile( hfile, &FileHeader, sizeof(FileHeader), &len, NULL ) && len == sizeof(FileHeader))
 642             {
 643                 if (FileHeader.Characteristics & IMAGE_FILE_DLL) return BINARY_PE_DLL;
 644                 return BINARY_PE_EXE;
 645             }
 646             return BINARY_DOS;
 647         }
 648
 649         if (!memcmp( magic, "NE", 2 ))
 650         {
 651             /* This is a Windows executable (NE) header.  This can
 652              * mean either a 16-bit OS/2 or a 16-bit Windows or even a
 653              * DOS program (running under a DOS extender).  To decide
 654              * which, we'll have to read the NE header.
 655              */
 656             IMAGE_OS2_HEADER ne;
 657             if (    SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) != -1
 658                     && ReadFile( hfile, &ne, sizeof(ne), &len, NULL )
 659                     && len == sizeof(ne) )
 660             {
 661                 switch ( ne.ne_exetyp )
 662                 {
 663                 case 2:  return BINARY_WIN16;
 664                 case 5:  return BINARY_DOS;
 665                 default: return MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ne);
 666                 }
 667             }
 668             /* Couldn't read header, so abort. */
 669             return BINARY_DOS;
 670         }
 671
 672         /* Unknown extended header, but this file is nonetheless DOS-executable. */
 673         return BINARY_DOS;
 674     }
 675
 676     return BINARY_UNKNOWN;
 677 }
 678
 679 /***********************************************************************
 680  *             GetBinaryTypeA                     [KERNEL32.@]
 681  *             GetBinaryType                      [KERNEL32.@]
 682  *
 683  * The GetBinaryType function determines whether a file is executable
 684  * or not and if it is it returns what type of executable it is.
 685  * The type of executable is a property that determines in which
 686  * subsystem an executable file runs under.
 687  *
 688  * Binary types returned:
 689  * SCS_32BIT_BINARY: A Win32 based application
 690  * SCS_DOS_BINARY: An MS-Dos based application
 691  * SCS_WOW_BINARY: A Win16 based application
 692  * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
 693  * SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
 694  * SCS_OS216_BINARY: A 16bit OS/2 based application
 695  *
 696  * Returns TRUE if the file is an executable in which case
 697  * the value pointed by lpBinaryType is set.
 698  * Returns FALSE if the file is not an executable or if the function fails.
 699  *
 700  * To do so it opens the file and reads in the header information
 701  * if the extended header information is not present it will
 702  * assume that the file is a DOS executable.
 703  * If the extended header information is present it will
 704  * determine if the file is a 16 or 32 bit Windows executable
 705  * by check the flags in the header.
 706  *
 707  * Note that .COM and .PIF files are only recognized by their
 708  * file name extension; but Windows does it the same way ...
 709  */
 710 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
 711 {
 712     BOOL ret = FALSE;
 713     HANDLE hfile;
 714     char *ptr;
 715
 716     TRACE_(win32)("%s\n", lpApplicationName );
 717
 718     /* Sanity check.
 719      */
 720     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 721         return FALSE;
 722
 723     /* Open the file indicated by lpApplicationName for reading.
 724      */
 725     hfile = CreateFileA( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
 726                          NULL, OPEN_EXISTING, 0, 0 );
 727     if ( hfile == INVALID_HANDLE_VALUE )
 728         return FALSE;
 729
 730     /* Check binary type
 731      */
 732     switch(MODULE_GetBinaryType( hfile ))
 733     {
 734     case BINARY_UNKNOWN:
 735         /* try to determine from file name */
 736         ptr = strrchr( lpApplicationName, '.' );
 737         if (!ptr) break;
 738         if (!FILE_strcasecmp( ptr, ".COM" ))
 739         {
 740             *lpBinaryType = SCS_DOS_BINARY;
 741             ret = TRUE;
 742         }
 743         else if (!FILE_strcasecmp( ptr, ".PIF" ))
 744         {
 745             *lpBinaryType = SCS_PIF_BINARY;
 746             ret = TRUE;
 747         }
 748         break;
 749     case BINARY_PE_EXE:
 750     case BINARY_PE_DLL:
 751         *lpBinaryType = SCS_32BIT_BINARY;
 752         ret = TRUE;
 753         break;
 754     case BINARY_WIN16:
 755         *lpBinaryType = SCS_WOW_BINARY;
 756         ret = TRUE;
 757         break;
 758     case BINARY_OS216:
 759         *lpBinaryType = SCS_OS216_BINARY;
 760         ret = TRUE;
 761         break;
 762     case BINARY_DOS:
 763         *lpBinaryType = SCS_DOS_BINARY;
 764         ret = TRUE;
 765         break;
 766     case BINARY_UNIX_EXE:
 767     case BINARY_UNIX_LIB:
 768         ret = FALSE;
 769         break;
 770     }
 771
 772     CloseHandle( hfile );
 773     return ret;
 774 }
 775
 776 /***********************************************************************
 777  *             GetBinaryTypeW                      [KERNEL32.@]
 778  */
 779 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
 780 {
 781     BOOL ret = FALSE;
 782     LPSTR strNew = NULL;
 783
 784     TRACE_(win32)("%s\n", debugstr_w(lpApplicationName) );
 785
 786     /* Sanity check.
 787      */
 788     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 789         return FALSE;
 790
 791     /* Convert the wide string to a ascii string.
 792      */
 793     strNew = HEAP_strdupWtoA( GetProcessHeap(), 0, lpApplicationName );
 794
 795     if ( strNew != NULL )
 796     {
 797         ret = GetBinaryTypeA( strNew, lpBinaryType );
 798
 799         /* Free the allocated string.
 800          */
 801         HeapFree( GetProcessHeap(), 0, strNew );
 802     }
 803
 804     return ret;
 805 }
 806
 807
 808 /***********************************************************************
 809  *           WinExec     (KERNEL.166)
 810  *           WinExec16   (KERNEL32.@)
 811  */
 812 HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow )
 813 {
 814     LPCSTR p, args = NULL;
 815     LPCSTR name_beg, name_end;
 816     LPSTR name, cmdline;
 817     int arglen;
 818     HINSTANCE16 ret;
 819     char buffer[MAX_PATH];
 820
 821     if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */
 822     {
 823       name_beg = lpCmdLine+1;
 824       p = strchr ( lpCmdLine+1, '"' );
 825       if (p)
 826       {
 827           name_end = p;
 828           args = strchr ( p, ' ' );
 829       }
 830       else /* yes, even valid with trailing '"' missing */
 831           name_end = lpCmdLine+strlen(lpCmdLine);
 832     }
 833     else
 834     {
 835       name_beg = lpCmdLine;
 836       args = strchr( lpCmdLine, ' ' );
 837       name_end = args ? args : lpCmdLine+strlen(lpCmdLine);
 838     }
 839
 840     if ((name_beg == lpCmdLine) && (!args))
 841     { /* just use the original cmdline string as file name */
 842         name = (LPSTR)lpCmdLine;
 843     }
 844     else
 845     {
 846         if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 )))
 847             return ERROR_NOT_ENOUGH_MEMORY;
 848         memcpy( name, name_beg, name_end - name_beg );
 849         name[name_end - name_beg] = '\0';
 850     }
 851
 852     if (args)
 853     {
 854         args++;
 855         arglen = strlen(args);
 856         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen );
 857         cmdline[0] = (BYTE)arglen;
 858         strcpy( cmdline + 1, args );
 859     }
 860     else
 861     {
 862         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 );
 863         cmdline[0] = cmdline[1] = 0;
 864     }
 865
 866     TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]);
 867
 868     if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL ))
 869     {
 870         LOADPARAMS16 params;
 871         WORD showCmd[2];
 872         showCmd[0] = 2;
 873         showCmd[1] = nCmdShow;
 874
 875         params.hEnvironment = 0;
 876         params.cmdLine = MapLS( cmdline );
 877         params.showCmd = MapLS( showCmd );
 878         params.reserved = 0;
 879
 880         ret = LoadModule16( buffer, &params );
 881         UnMapLS( params.cmdLine );
 882         UnMapLS( params.showCmd );
 883     }
 884     else ret = GetLastError();
 885
 886     HeapFree( GetProcessHeap(), 0, cmdline );
 887     if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name );
 888
 889     if (ret == 21)  /* 32-bit module */
 890     {
 891         DWORD count;
 892         ReleaseThunkLock( &count );
 893         ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) );
 894         RestoreThunkLock( count );
 895     }
 896     return ret;
 897 }
 898
 899 /***********************************************************************
 900  *           WinExec   (KERNEL32.@)
 901  */
 902 UINT WINAPI WinExec( LPCSTR lpCmdLine, UINT nCmdShow )
 903 {
 904     PROCESS_INFORMATION info;
 905     STARTUPINFOA startup;
 906     char *cmdline;
 907     UINT ret;
 908
 909     memset( &startup, 0, sizeof(startup) );
 910     startup.cb = sizeof(startup);
 911     startup.dwFlags = STARTF_USESHOWWINDOW;
 912     startup.wShowWindow = nCmdShow;
 913
 914     /* cmdline needs to be writeable for CreateProcess */
 915     if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(lpCmdLine)+1 ))) return 0;
 916     strcpy( cmdline, lpCmdLine );
 917
 918     if (CreateProcessA( NULL, cmdline, NULL, NULL, FALSE,
 919                         0, NULL, NULL, &startup, &info ))
 920     {
 921         /* Give 30 seconds to the app to come up */
 922         if (wait_input_idle( info.hProcess, 30000 ) == 0xFFFFFFFF)
 923             WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() );
 924         ret = 33;
 925         /* Close off the handles */
 926         CloseHandle( info.hThread );
 927         CloseHandle( info.hProcess );
 928     }
 929     else if ((ret = GetLastError()) >= 32)
 930     {
 931         FIXME("Strange error set by CreateProcess: %d\n", ret );
 932         ret = 11;
 933     }
 934     HeapFree( GetProcessHeap(), 0, cmdline );
 935     return ret;
 936 }
 937
 938 /**********************************************************************
 939  *          LoadModule    (KERNEL32.@)
 940  */
 941 HINSTANCE WINAPI LoadModule( LPCSTR name, LPVOID paramBlock )
 942 {
 943     LOADPARAMS *params = (LOADPARAMS *)paramBlock;
 944     PROCESS_INFORMATION info;
 945     STARTUPINFOA startup;
 946     HINSTANCE hInstance;
 947     LPSTR cmdline, p;
 948     char filename[MAX_PATH];
 949     BYTE len;
 950
 951     if (!name) return (HINSTANCE)ERROR_FILE_NOT_FOUND;
 952
 953     if (!SearchPathA( NULL, name, ".exe", sizeof(filename), filename, NULL ) &&
 954         !SearchPathA( NULL, name, NULL, sizeof(filename), filename, NULL ))
 955         return (HINSTANCE)GetLastError();
 956
 957     len = (BYTE)params->lpCmdLine[0];
 958     if (!(cmdline = HeapAlloc( GetProcessHeap(), 0, strlen(filename) + len + 2 )))
 959         return (HINSTANCE)ERROR_NOT_ENOUGH_MEMORY;
 960
 961     strcpy( cmdline, filename );
 962     p = cmdline + strlen(cmdline);
 963     *p++ = ' ';
 964     memcpy( p, params->lpCmdLine + 1, len );
 965     p[len] = 0;
 966
 967     memset( &startup, 0, sizeof(startup) );
 968     startup.cb = sizeof(startup);
 969     if (params->lpCmdShow)
 970     {
 971         startup.dwFlags = STARTF_USESHOWWINDOW;
 972         startup.wShowWindow = params->lpCmdShow[1];
 973     }
 974
 975     if (CreateProcessA( filename, cmdline, NULL, NULL, FALSE, 0,
 976                         params->lpEnvAddress, NULL, &startup, &info ))
 977     {
 978         /* Give 30 seconds to the app to come up */
 979         if (wait_input_idle( info.hProcess, 30000 ) ==  0xFFFFFFFF )
 980             WARN("WaitForInputIdle failed: Error %ld\n", GetLastError() );
 981         hInstance = (HINSTANCE)33;
 982         /* Close off the handles */
 983         CloseHandle( info.hThread );
 984         CloseHandle( info.hProcess );
 985     }
 986     else if ((hInstance = (HINSTANCE)GetLastError()) >= (HINSTANCE)32)
 987     {
 988         FIXME("Strange error set by CreateProcess: %d\n", hInstance );
 989         hInstance = (HINSTANCE)11;
 990     }
 991
 992     HeapFree( GetProcessHeap(), 0, cmdline );
 993     return hInstance;
 994 }
 995
 996
 997 /***********************************************************************
 998  *              GetModuleHandleA         (KERNEL32.@)
 999  *              GetModuleHandle32        (KERNEL.488)
1000  */
1001 HMODULE WINAPI GetModuleHandleA(LPCSTR module)
1002 {
1003     WINE_MODREF *wm;
1004
1005     if ( module == NULL )
1006         wm = exe_modref;
1007     else
1008         wm = MODULE_FindModule( module );
1009
1010     return wm? wm->module : 0;
1011 }
1012
1013 /***********************************************************************
1014  *              GetModuleHandleW (KERNEL32.@)
1015  */
1016 HMODULE WINAPI GetModuleHandleW(LPCWSTR module)
1017 {
1018     HMODULE hModule;
1019     LPSTR modulea = HEAP_strdupWtoA( GetProcessHeap(), 0, module );
1020     hModule = GetModuleHandleA( modulea );
1021     HeapFree( GetProcessHeap(), 0, modulea );
1022     return hModule;
1023 }
1024
1025
1026 /***********************************************************************
1027  *              GetModuleFileNameA      (KERNEL32.@)
1028  *              GetModuleFileName32     (KERNEL.487)
1029  *
1030  * GetModuleFileNameA seems to *always* return the long path;
1031  * it's only GetModuleFileName16 that decides between short/long path
1032  * by checking if exe version >= 4.0.
1033  * (SDK docu doesn't mention this)
1034  */
1035 DWORD WINAPI GetModuleFileNameA(
1036         HMODULE hModule,        /* [in] module handle (32bit) */
1037         LPSTR lpFileName,       /* [out] filenamebuffer */
1038         DWORD size )            /* [in] size of filenamebuffer */
1039 {
1040     RtlEnterCriticalSection( &loader_section );
1041
1042     lpFileName[0] = 0;
1043     if (!hModule && !(NtCurrentTeb()->tibflags & TEBF_WIN32))
1044     {
1045         /* 16-bit task - get current NE module name */
1046         NE_MODULE *pModule = NE_GetPtr( GetCurrentTask() );
1047         if (pModule) GetLongPathNameA(NE_MODULE_NAME(pModule), lpFileName, size);
1048     }
1049     else
1050     {
1051         WINE_MODREF *wm = MODULE32_LookupHMODULE( hModule );
1052         if (wm) lstrcpynA( lpFileName, wm->filename, size );
1053     }
1054
1055     RtlLeaveCriticalSection( &loader_section );
1056     TRACE("%s\n", lpFileName );
1057     return strlen(lpFileName);
1058 }
1059
1060
1061 /***********************************************************************
1062  *              GetModuleFileNameW      (KERNEL32.@)
1063  */
1064 DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size )
1065 {
1066     LPSTR fnA = HeapAlloc( GetProcessHeap(), 0, size * 2 );
1067     if (!fnA) return 0;
1068     GetModuleFileNameA( hModule, fnA, size * 2 );
1069     if (size > 0 && !MultiByteToWideChar( CP_ACP, 0, fnA, -1, lpFileName, size ))
1070         lpFileName[size-1] = 0;
1071     HeapFree( GetProcessHeap(), 0, fnA );
1072     return strlenW(lpFileName);
1073 }
1074
1075
1076 /***********************************************************************
1077  *           LoadLibraryExA   (KERNEL32.@)
1078  */
1079 HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
1080 {
1081         WINE_MODREF *wm;
1082
1083         if(!libname)
1084         {
1085                 SetLastError(ERROR_INVALID_PARAMETER);
1086                 return 0;
1087         }
1088
1089         if (flags & LOAD_LIBRARY_AS_DATAFILE)
1090         {
1091             char filename[256];
1092             HMODULE hmod = 0;
1093
1094             /* This method allows searching for the 'native' libraries only */
1095             if (SearchPathA( NULL, libname, ".dll", sizeof(filename), filename, NULL ))
1096             {
1097                 /* FIXME: maybe we should use the hfile parameter instead */
1098                 HANDLE hFile = CreateFileA( filename, GENERIC_READ, FILE_SHARE_READ,
1099                                             NULL, OPEN_EXISTING, 0, 0 );
1100                 if (hFile != INVALID_HANDLE_VALUE)
1101                 {
1102                     HANDLE mapping;
1103                     switch (MODULE_GetBinaryType( hFile ))
1104                     {
1105                     case BINARY_PE_EXE:
1106                     case BINARY_PE_DLL:
1107                         mapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
1108                         if (mapping)
1109                         {
1110                             hmod = (HMODULE)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
1111                             CloseHandle( mapping );
1112                         }
1113                         break;
1114                     default:
1115                         break;
1116                     }
1117                     CloseHandle( hFile );
1118                 }
1119                 if (hmod) return (HMODULE)((ULONG_PTR)hmod + 1);
1120             }
1121             flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
1122             /* Fallback to normal behaviour */
1123         }
1124
1125         RtlEnterCriticalSection( &loader_section );
1126
1127         wm = MODULE_LoadLibraryExA( libname, hfile, flags );
1128         if ( wm )
1129         {
1130                 if ( !MODULE_DllProcessAttach( wm, NULL ) )
1131                 {
1132                         WARN_(module)("Attach failed for module '%s'.\n", libname);
1133                         MODULE_FreeLibrary(wm);
1134                         SetLastError(ERROR_DLL_INIT_FAILED);
1135                         wm = NULL;
1136                 }
1137         }
1138
1139         RtlLeaveCriticalSection( &loader_section );
1140         return wm ? wm->module : 0;
1141 }
1142
1143 /***********************************************************************
1144  *      allocate_lib_dir
1145  *
1146  * helper for MODULE_LoadLibraryExA.  Allocate space to hold the directory
1147  * portion of the provided name and put the name in it.
1148  *
1149  */
1150 static LPCSTR allocate_lib_dir(LPCSTR libname)
1151 {
1152     LPCSTR p, pmax;
1153     LPSTR result;
1154     int length;
1155
1156     pmax = libname;
1157     if ((p = strrchr( pmax, '\\' ))) pmax = p + 1;
1158     if ((p = strrchr( pmax, '/' ))) pmax = p + 1; /* Naughty.  MSDN says don't */
1159     if (pmax == libname && pmax[0] && pmax[1] == ':') pmax += 2;
1160
1161     length = pmax - libname;
1162
1163     result = HeapAlloc (GetProcessHeap(), 0, length+1);
1164
1165     if (result)
1166     {
1167         strncpy (result, libname, length);
1168         result [length] = '\0';
1169     }
1170
1171     return result;
1172 }
1173
1174 /***********************************************************************
1175  *      MODULE_LoadLibraryExA   (internal)
1176  *
1177  * Load a PE style module according to the load order.
1178  *
1179  * The HFILE parameter is not used and marked reserved in the SDK. I can
1180  * only guess that it should force a file to be mapped, but I rather
1181  * ignore the parameter because it would be extremely difficult to
1182  * integrate this with different types of module representations.
1183  *
1184  * libdir is used to support LOAD_WITH_ALTERED_SEARCH_PATH during the recursion
1185  *        on this function.  When first called from LoadLibraryExA it will be
1186  *        NULL but thereafter it may point to a buffer containing the path
1187  *        portion of the library name.  Note that the recursion all occurs
1188  *        within a Critical section (see LoadLibraryExA) so the use of a
1189  *        static is acceptable.
1190  *        (We have to use a static variable at some point anyway, to pass the
1191  *        information from BUILTIN32_dlopen through dlopen and the builtin's
1192  *        init function into load_library).
1193  * allocated_libdir is TRUE in the stack frame that allocated libdir
1194  */
1195 WINE_MODREF *MODULE_LoadLibraryExA( LPCSTR libname, HANDLE hfile, DWORD flags )
1196 {
1197         DWORD err = GetLastError();
1198         WINE_MODREF *pwm;
1199         int i;
1200         enum loadorder_type loadorder[LOADORDER_NTYPES];
1201         LPSTR filename;
1202         const char *filetype = "";
1203         DWORD found;
1204         BOOL allocated_libdir = FALSE;
1205         static LPCSTR libdir = NULL; /* See above */
1206
1207         if ( !libname ) return NULL;
1208
1209         filename = HeapAlloc ( GetProcessHeap(), 0, MAX_PATH + 1 );
1210         if ( !filename ) return NULL;
1211         *filename = 0; /* Just in case we don't set it before goto error */
1212
1213         RtlEnterCriticalSection( &loader_section );
1214
1215         if ((flags & LOAD_WITH_ALTERED_SEARCH_PATH) && FILE_contains_path(libname))
1216         {
1217             if (!(libdir = allocate_lib_dir(libname))) goto error;
1218             allocated_libdir = TRUE;
1219         }
1220
1221         if (!libdir || allocated_libdir)
1222             found = SearchPathA(NULL, libname, ".dll", MAX_PATH, filename, NULL);
1223         else
1224             found = DIR_SearchAlternatePath(libdir, libname, ".dll", MAX_PATH, filename, NULL);
1225
1226         /* build the modules filename */
1227         if (!found)
1228         {
1229             if (!MODULE_GetBuiltinPath( libname, ".dll", filename, MAX_PATH )) goto error;
1230         }
1231
1232         /* Check for already loaded module */
1233         if (!(pwm = MODULE_FindModule(filename)) && !FILE_contains_path(libname))
1234         {
1235             LPSTR       fn = HeapAlloc ( GetProcessHeap(), 0, MAX_PATH + 1 );
1236             if (fn)
1237             {
1238                 /* since the default loading mechanism uses a more detailed algorithm
1239                  * than SearchPath (like using PATH, which can even be modified between
1240                  * two attempts of loading the same DLL), the look-up above (with
1241                  * SearchPath) can have put the file in system directory, whereas it
1242                  * has already been loaded but with a different path. So do a specific
1243                  * look-up with filename (without any path)
1244                  */
1245                 strcpy ( fn, libname );
1246                 /* if the filename doesn't have an extension append .DLL */
1247                 if (!strrchr( fn, '.')) strcat( fn, ".dll" );
1248                 if ((pwm = MODULE_FindModule( fn )) != NULL)
1249                    strcpy( filename, fn );
1250                 HeapFree( GetProcessHeap(), 0, fn );
1251             }
1252         }
1253         if (pwm)
1254         {
1255                 if(!(pwm->flags & WINE_MODREF_MARKER))
1256                         pwm->refCount++;
1257
1258                 if ((pwm->flags & WINE_MODREF_DONT_RESOLVE_REFS) &&
1259                     !(flags & DONT_RESOLVE_DLL_REFERENCES))
1260                 {
1261                     pwm->flags &= ~WINE_MODREF_DONT_RESOLVE_REFS;
1262                     PE_fixup_imports( pwm );
1263                 }
1264                 TRACE("Already loaded module '%s' at 0x%08x, count=%d\n", filename, pwm->module, pwm->refCount);
1265                 if (allocated_libdir)
1266                 {
1267                     HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1268                     libdir = NULL;
1269                 }
1270                 RtlLeaveCriticalSection( &loader_section );
1271                 HeapFree ( GetProcessHeap(), 0, filename );
1272                 return pwm;
1273         }
1274
1275         MODULE_GetLoadOrder( loadorder, filename, TRUE);
1276
1277         for(i = 0; i < LOADORDER_NTYPES; i++)
1278         {
1279                 if (loadorder[i] == LOADORDER_INVALID) break;
1280                 SetLastError( ERROR_FILE_NOT_FOUND );
1281
1282                 switch(loadorder[i])
1283                 {
1284                 case LOADORDER_DLL:
1285                         TRACE("Trying native dll '%s'\n", filename);
1286                         pwm = PE_LoadLibraryExA(filename, flags);
1287                         filetype = "native";
1288                         break;
1289
1290                 case LOADORDER_SO:
1291                         TRACE("Trying so-library '%s'\n", filename);
1292                         pwm = ELF_LoadLibraryExA(filename, flags);
1293                         filetype = "so";
1294                         break;
1295
1296                 case LOADORDER_BI:
1297                         TRACE("Trying built-in '%s'\n", filename);
1298                         pwm = BUILTIN32_LoadLibraryExA(filename, flags);
1299                         filetype = "builtin";
1300                         break;
1301
1302                 default:
1303                         pwm = NULL;
1304                         break;
1305                 }
1306
1307                 if(pwm)
1308                 {
1309                         /* Initialize DLL just loaded */
1310                         TRACE("Loaded module '%s' at 0x%08x\n", filename, pwm->module);
1311                         if (!TRACE_ON(module))
1312                             TRACE_(loaddll)("Loaded module '%s' : %s\n", filename, filetype);
1313                         /* Set the refCount here so that an attach failure will */
1314                         /* decrement the dependencies through the MODULE_FreeLibrary call. */
1315                         pwm->refCount++;
1316
1317                         if (allocated_libdir)
1318                         {
1319                             HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1320                             libdir = NULL;
1321                         }
1322                         RtlLeaveCriticalSection( &loader_section );
1323                         SetLastError( err );  /* restore last error */
1324                         HeapFree ( GetProcessHeap(), 0, filename );
1325                         return pwm;
1326                 }
1327
1328                 if(GetLastError() != ERROR_FILE_NOT_FOUND)
1329                 {
1330                     WARN("Loading of %s DLL %s failed (error %ld).\n",
1331                          filetype, filename, GetLastError());
1332                     break;
1333                 }
1334         }
1335
1336  error:
1337         if (allocated_libdir)
1338         {
1339             HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1340             libdir = NULL;
1341         }
1342         RtlLeaveCriticalSection( &loader_section );
1343         WARN("Failed to load module '%s'; error=%ld\n", filename, GetLastError());
1344         HeapFree ( GetProcessHeap(), 0, filename );
1345         return NULL;
1346 }
1347
1348 /***********************************************************************
1349  *           LoadLibraryA         (KERNEL32.@)
1350  */
1351 HMODULE WINAPI LoadLibraryA(LPCSTR libname) {
1352         return LoadLibraryExA(libname,0,0);
1353 }
1354
1355 /***********************************************************************
1356  *           LoadLibraryW         (KERNEL32.@)
1357  */
1358 HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW)
1359 {
1360     return LoadLibraryExW(libnameW,0,0);
1361 }
1362
1363 /***********************************************************************
1364  *           LoadLibrary32        (KERNEL.452)
1365  *           LoadSystemLibrary32  (KERNEL.482)
1366  */
1367 HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
1368 {
1369     HMODULE hModule;
1370     DWORD count;
1371
1372     ReleaseThunkLock( &count );
1373     hModule = LoadLibraryA( libname );
1374     RestoreThunkLock( count );
1375     return hModule;
1376 }
1377
1378 /***********************************************************************
1379  *           LoadLibraryExW       (KERNEL32.@)
1380  */
1381 HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW,HANDLE hfile,DWORD flags)
1382 {
1383     LPSTR libnameA = HEAP_strdupWtoA( GetProcessHeap(), 0, libnameW );
1384     HMODULE ret = LoadLibraryExA( libnameA , hfile, flags );
1385
1386     HeapFree( GetProcessHeap(), 0, libnameA );
1387     return ret;
1388 }
1389
1390 /***********************************************************************
1391  *           MODULE_FlushModrefs
1392  *
1393  * NOTE: Assumes that the process critical section is held!
1394  *
1395  * Remove all unused modrefs and call the internal unloading routines
1396  * for the library type.
1397  */
1398 static void MODULE_FlushModrefs(void)
1399 {
1400         WINE_MODREF *wm, *next;
1401
1402         for(wm = MODULE_modref_list; wm; wm = next)
1403         {
1404                 next = wm->next;
1405
1406                 if(wm->refCount)
1407                         continue;
1408
1409                 /* Unlink this modref from the chain */
1410                 if(wm->next)
1411                         wm->next->prev = wm->prev;
1412                 if(wm->prev)
1413                         wm->prev->next = wm->next;
1414                 if(wm == MODULE_modref_list)
1415                         MODULE_modref_list = wm->next;
1416
1417                 TRACE(" unloading %s\n", wm->filename);
1418                 if (!TRACE_ON(module))
1419                     TRACE_(loaddll)("Unloaded module '%s' : %s\n", wm->filename,
1420                                     wm->dlhandle ? "builtin" : "native" );
1421
1422                 if (wm->dlhandle) wine_dll_unload( wm->dlhandle );
1423                 else UnmapViewOfFile( (LPVOID)wm->module );
1424                 FreeLibrary16(wm->hDummyMod);
1425                 HeapFree( GetProcessHeap(), 0, wm->deps );
1426                 HeapFree( GetProcessHeap(), 0, wm );
1427         }
1428 }
1429
1430 /***********************************************************************
1431  *           FreeLibrary   (KERNEL32.@)
1432  *           FreeLibrary32 (KERNEL.486)
1433  */
1434 BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
1435 {
1436     BOOL retv = FALSE;
1437     WINE_MODREF *wm;
1438
1439     if (!hLibModule)
1440     {
1441         SetLastError( ERROR_INVALID_HANDLE );
1442         return FALSE;
1443     }
1444
1445     if ((ULONG_PTR)hLibModule & 1)
1446     {
1447         /* this is a LOAD_LIBRARY_AS_DATAFILE module */
1448         char *ptr = (char *)hLibModule - 1;
1449         UnmapViewOfFile( ptr );
1450         return TRUE;
1451     }
1452
1453     RtlEnterCriticalSection( &loader_section );
1454     free_lib_count++;
1455
1456     if ((wm = MODULE32_LookupHMODULE( hLibModule ))) retv = MODULE_FreeLibrary( wm );
1457
1458     free_lib_count--;
1459     RtlLeaveCriticalSection( &loader_section );
1460
1461     return retv;
1462 }
1463
1464 /***********************************************************************
1465  *           MODULE_DecRefCount
1466  *
1467  * NOTE: Assumes that the process critical section is held!
1468  */
1469 static void MODULE_DecRefCount( WINE_MODREF *wm )
1470 {
1471     int i;
1472
1473     if ( wm->flags & WINE_MODREF_MARKER )
1474         return;
1475
1476     if ( wm->refCount <= 0 )
1477         return;
1478
1479     --wm->refCount;
1480     TRACE("(%s) refCount: %d\n", wm->modname, wm->refCount );
1481
1482     if ( wm->refCount == 0 )
1483     {
1484         wm->flags |= WINE_MODREF_MARKER;
1485
1486         for ( i = 0; i < wm->nDeps; i++ )
1487             if ( wm->deps[i] )
1488                 MODULE_DecRefCount( wm->deps[i] );
1489
1490         wm->flags &= ~WINE_MODREF_MARKER;
1491     }
1492 }
1493
1494 /***********************************************************************
1495  *           MODULE_FreeLibrary
1496  *
1497  * NOTE: Assumes that the process critical section is held!
1498  */
1499 BOOL MODULE_FreeLibrary( WINE_MODREF *wm )
1500 {
1501     TRACE("(%s) - START\n", wm->modname );
1502
1503     /* Recursively decrement reference counts */
1504     MODULE_DecRefCount( wm );
1505
1506     /* Call process detach notifications */
1507     if ( free_lib_count <= 1 )
1508     {
1509         MODULE_DllProcessDetach( FALSE, NULL );
1510         SERVER_START_REQ( unload_dll )
1511         {
1512             req->base = (void *)wm->module;
1513             wine_server_call( req );
1514         }
1515         SERVER_END_REQ;
1516         MODULE_FlushModrefs();
1517     }
1518
1519     TRACE("END\n");
1520
1521     return TRUE;
1522 }
1523
1524
1525 /***********************************************************************
1526  *           FreeLibraryAndExitThread (KERNEL32.@)
1527  */
1528 VOID WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
1529 {
1530     FreeLibrary(hLibModule);
1531     ExitThread(dwExitCode);
1532 }
1533
1534 /***********************************************************************
1535  *           PrivateLoadLibrary       (KERNEL32.@)
1536  *
1537  * FIXME: rough guesswork, don't know what "Private" means
1538  */
1539 HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
1540 {
1541     return LoadLibrary16(libname);
1542 }
1543
1544
1545
1546 /***********************************************************************
1547  *           PrivateFreeLibrary       (KERNEL32.@)
1548  *
1549  * FIXME: rough guesswork, don't know what "Private" means
1550  */
1551 void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
1552 {
1553     FreeLibrary16(handle);
1554 }
1555
1556
1557 /***********************************************************************
1558  *           GetProcAddress16   (KERNEL32.37)
1559  * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
1560  */
1561 FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
1562 {
1563     if (!hModule) {
1564         WARN("hModule may not be 0!\n");
1565         return (FARPROC16)0;
1566     }
1567     if (HIWORD(hModule))
1568     {
1569         WARN("hModule is Win32 handle (%08x)\n", hModule );
1570         return (FARPROC16)0;
1571     }
1572     return GetProcAddress16( LOWORD(hModule), name );
1573 }
1574
1575 /***********************************************************************
1576  *           GetProcAddress   (KERNEL.50)
1577  */
1578 FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name )
1579 {
1580     WORD ordinal;
1581     FARPROC16 ret;
1582
1583     if (!hModule) hModule = GetCurrentTask();
1584     hModule = GetExePtr( hModule );
1585
1586     if (HIWORD(name) != 0)
1587     {
1588         ordinal = NE_GetOrdinal( hModule, name );
1589         TRACE("%04x '%s'\n", hModule, name );
1590     }
1591     else
1592     {
1593         ordinal = LOWORD(name);
1594         TRACE("%04x %04x\n", hModule, ordinal );
1595     }
1596     if (!ordinal) return (FARPROC16)0;
1597
1598     ret = NE_GetEntryPoint( hModule, ordinal );
1599
1600     TRACE("returning %08x\n", (UINT)ret );
1601     return ret;
1602 }
1603
1604
1605 /***********************************************************************
1606  *           GetProcAddress             (KERNEL32.@)
1607  */
1608 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
1609 {
1610     return MODULE_GetProcAddress( hModule, function, -1, TRUE );
1611 }
1612
1613 /***********************************************************************
1614  *           GetProcAddress32                   (KERNEL.453)
1615  */
1616 FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function )
1617 {
1618     return MODULE_GetProcAddress( hModule, function, -1, FALSE );
1619 }
1620
1621 /***********************************************************************
1622  *           MODULE_GetProcAddress              (internal)
1623  */
1624 FARPROC MODULE_GetProcAddress(
1625         HMODULE hModule,        /* [in] current module handle */
1626         LPCSTR function,        /* [in] function to be looked up */
1627         int hint,
1628         BOOL snoop )
1629 {
1630     WINE_MODREF *wm;
1631     FARPROC     retproc = 0;
1632
1633     if (HIWORD(function))
1634         TRACE_(win32)("(%08lx,%s (%d))\n",(DWORD)hModule,function,hint);
1635     else
1636         TRACE_(win32)("(%08lx,%p)\n",(DWORD)hModule,function);
1637
1638     RtlEnterCriticalSection( &loader_section );
1639     if ((wm = MODULE32_LookupHMODULE( hModule )))
1640     {
1641         retproc = wm->find_export( wm, function, hint, snoop );
1642         if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND);
1643     }
1644     RtlLeaveCriticalSection( &loader_section );
1645     return retproc;
1646 }
1647
1648
1649 /***************************************************************************
1650  *              HasGPHandler                    (KERNEL.338)
1651  */
1652
1653 #include "pshpack1.h"
1654 typedef struct _GPHANDLERDEF
1655 {
1656     WORD selector;
1657     WORD rangeStart;
1658     WORD rangeEnd;
1659     WORD handler;
1660 } GPHANDLERDEF;
1661 #include "poppack.h"
1662
1663 SEGPTR WINAPI HasGPHandler16( SEGPTR address )
1664 {
1665     HMODULE16 hModule;
1666     int gpOrdinal;
1667     SEGPTR gpPtr;
1668     GPHANDLERDEF *gpHandler;
1669
1670     if (    (hModule = FarGetOwner16( SELECTOROF(address) )) != 0
1671          && (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0
1672          && (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0
1673          && !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) )
1674          && (gpHandler = MapSL( gpPtr )) != NULL )
1675     {
1676         while (gpHandler->selector)
1677         {
1678             if (    SELECTOROF(address) == gpHandler->selector
1679                  && OFFSETOF(address)   >= gpHandler->rangeStart
1680                  && OFFSETOF(address)   <  gpHandler->rangeEnd  )
1681                 return MAKESEGPTR( gpHandler->selector, gpHandler->handler );
1682             gpHandler++;
1683         }
1684     }
1685
1686     return 0;
1687 }