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 "winternl.h"
  36 #include "heap.h"
  37 #include "file.h"
  38 #include "module.h"
  39 #include "wine/debug.h"
  40 #include "wine/server.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(module);
  43 WINE_DECLARE_DEBUG_CHANNEL(win32);
  44 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
  45
  46 WINE_MODREF *MODULE_modref_list = NULL;
  47
  48 static WINE_MODREF *exe_modref;
  49 static int free_lib_count;   /* recursion depth of FreeLibrary calls */
  50 static int process_detaching;  /* set on process detach to avoid deadlocks with thread detach */
  51
  52 static CRITICAL_SECTION loader_section = CRITICAL_SECTION_INIT( "loader_section" );
  53
  54 /***********************************************************************
  55  *           wait_input_idle
  56  *
  57  * Wrapper to call WaitForInputIdle USER function
  58  */
  59 typedef DWORD (WINAPI *WaitForInputIdle_ptr)( HANDLE hProcess, DWORD dwTimeOut );
  60
  61 static DWORD wait_input_idle( HANDLE process, DWORD timeout )
  62 {
  63     HMODULE mod = GetModuleHandleA( "user32.dll" );
  64     if (mod)
  65     {
  66         WaitForInputIdle_ptr ptr = (WaitForInputIdle_ptr)GetProcAddress( mod, "WaitForInputIdle" );
  67         if (ptr) return ptr( process, timeout );
  68     }
  69     return 0;
  70 }
  71
  72
  73 /*************************************************************************
  74  *              MODULE32_LookupHMODULE
  75  * looks for the referenced HMODULE in the current process
  76  * NOTE: Assumes that the process critical section is held!
  77  */
  78 static WINE_MODREF *MODULE32_LookupHMODULE( HMODULE hmod )
  79 {
  80     WINE_MODREF *wm;
  81
  82     if (!hmod)
  83         return exe_modref;
  84
  85     if (!HIWORD(hmod)) {
  86         ERR("tried to lookup 0x%04x in win32 module handler!\n",hmod);
  87         SetLastError( ERROR_INVALID_HANDLE );
  88         return NULL;
  89     }
  90     for ( wm = MODULE_modref_list; wm; wm=wm->next )
  91         if (wm->module == hmod)
  92             return wm;
  93     SetLastError( ERROR_INVALID_HANDLE );
  94     return NULL;
  95 }
  96
  97 /*************************************************************************
  98  *              MODULE_AllocModRef
  99  *
 100  * Allocate a WINE_MODREF structure and add it to the process list
 101  * NOTE: Assumes that the process critical section is held!
 102  */
 103 WINE_MODREF *MODULE_AllocModRef( HMODULE hModule, LPCSTR filename )
 104 {
 105     WINE_MODREF *wm;
 106
 107     DWORD long_len = strlen( filename );
 108     DWORD short_len = GetShortPathNameA( filename, NULL, 0 );
 109
 110     if ((wm = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
 111                          sizeof(*wm) + long_len + short_len + 1 )))
 112     {
 113         wm->module = hModule;
 114         wm->tlsindex = -1;
 115
 116         wm->filename = wm->data;
 117         memcpy( wm->filename, filename, long_len + 1 );
 118         if ((wm->modname = strrchr( wm->filename, '\\' ))) wm->modname++;
 119         else wm->modname = wm->filename;
 120
 121         wm->short_filename = wm->filename + long_len + 1;
 122         GetShortPathNameA( wm->filename, wm->short_filename, short_len + 1 );
 123         if ((wm->short_modname = strrchr( wm->short_filename, '\\' ))) wm->short_modname++;
 124         else wm->short_modname = wm->short_filename;
 125
 126         wm->next = MODULE_modref_list;
 127         if (wm->next) wm->next->prev = wm;
 128         MODULE_modref_list = wm;
 129
 130         if (!(RtlImageNtHeader(hModule)->FileHeader.Characteristics & IMAGE_FILE_DLL))
 131         {
 132             if (!exe_modref) exe_modref = wm;
 133             else FIXME( "Trying to load second .EXE file: %s\n", filename );
 134         }
 135     }
 136     return wm;
 137 }
 138
 139 /*************************************************************************
 140  *              MODULE_InitDLL
 141  */
 142 static BOOL MODULE_InitDLL( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
 143 {
 144     BOOL retv = TRUE;
 145
 146     static LPCSTR typeName[] = { "PROCESS_DETACH", "PROCESS_ATTACH",
 147                                  "THREAD_ATTACH", "THREAD_DETACH" };
 148     assert( wm );
 149
 150     /* Skip calls for modules loaded with special load flags */
 151
 152     if (wm->flags & WINE_MODREF_DONT_RESOLVE_REFS) return TRUE;
 153
 154     TRACE("(%s,%s,%p) - CALL\n", wm->modname, typeName[type], lpReserved );
 155
 156     /* Call the initialization routine */
 157     retv = PE_InitDLL( wm->module, type, lpReserved );
 158
 159     /* The state of the module list may have changed due to the call
 160        to PE_InitDLL. We cannot assume that this module has not been
 161        deleted.  */
 162     TRACE("(%p,%s,%p) - RETURN %d\n", wm, typeName[type], lpReserved, retv );
 163
 164     return retv;
 165 }
 166
 167 /*************************************************************************
 168  *              MODULE_DllProcessAttach
 169  *
 170  * Send the process attach notification to all DLLs the given module
 171  * depends on (recursively). This is somewhat complicated due to the fact that
 172  *
 173  * - we have to respect the module dependencies, i.e. modules implicitly
 174  *   referenced by another module have to be initialized before the module
 175  *   itself can be initialized
 176  *
 177  * - the initialization routine of a DLL can itself call LoadLibrary,
 178  *   thereby introducing a whole new set of dependencies (even involving
 179  *   the 'old' modules) at any time during the whole process
 180  *
 181  * (Note that this routine can be recursively entered not only directly
 182  *  from itself, but also via LoadLibrary from one of the called initialization
 183  *  routines.)
 184  *
 185  * Furthermore, we need to rearrange the main WINE_MODREF list to allow
 186  * the process *detach* notifications to be sent in the correct order.
 187  * This must not only take into account module dependencies, but also
 188  * 'hidden' dependencies created by modules calling LoadLibrary in their
 189  * attach notification routine.
 190  *
 191  * The strategy is rather simple: we move a WINE_MODREF to the head of the
 192  * list after the attach notification has returned.  This implies that the
 193  * detach notifications are called in the reverse of the sequence the attach
 194  * notifications *returned*.
 195  */
 196 BOOL MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved )
 197 {
 198     BOOL retv = TRUE;
 199     int i;
 200
 201     RtlEnterCriticalSection( &loader_section );
 202
 203     if (!wm)
 204     {
 205         wm = exe_modref;
 206         PE_InitTls();
 207     }
 208     assert( wm );
 209
 210     /* prevent infinite recursion in case of cyclical dependencies */
 211     if (    ( wm->flags & WINE_MODREF_MARKER )
 212          || ( wm->flags & WINE_MODREF_PROCESS_ATTACHED ) )
 213         goto done;
 214
 215     TRACE("(%s,%p) - START\n", wm->modname, lpReserved );
 216
 217     /* Tag current MODREF to prevent recursive loop */
 218     wm->flags |= WINE_MODREF_MARKER;
 219
 220     /* Recursively attach all DLLs this one depends on */
 221     for ( i = 0; retv && i < wm->nDeps; i++ )
 222         if ( wm->deps[i] )
 223             retv = MODULE_DllProcessAttach( wm->deps[i], lpReserved );
 224
 225     /* Call DLL entry point */
 226     if ( retv )
 227     {
 228         retv = MODULE_InitDLL( wm, DLL_PROCESS_ATTACH, lpReserved );
 229         if ( retv )
 230             wm->flags |= WINE_MODREF_PROCESS_ATTACHED;
 231     }
 232
 233     /* Re-insert MODREF at head of list */
 234     if ( retv && wm->prev )
 235     {
 236         wm->prev->next = wm->next;
 237         if ( wm->next ) wm->next->prev = wm->prev;
 238
 239         wm->prev = NULL;
 240         wm->next = MODULE_modref_list;
 241         MODULE_modref_list = wm->next->prev = wm;
 242     }
 243
 244     /* Remove recursion flag */
 245     wm->flags &= ~WINE_MODREF_MARKER;
 246
 247     TRACE("(%s,%p) - END\n", wm->modname, lpReserved );
 248
 249  done:
 250     RtlLeaveCriticalSection( &loader_section );
 251     return retv;
 252 }
 253
 254 /*************************************************************************
 255  *              MODULE_DllProcessDetach
 256  *
 257  * Send DLL process detach notifications.  See the comment about calling
 258  * sequence at MODULE_DllProcessAttach.  Unless the bForceDetach flag
 259  * is set, only DLLs with zero refcount are notified.
 260  */
 261 void MODULE_DllProcessDetach( BOOL bForceDetach, LPVOID lpReserved )
 262 {
 263     WINE_MODREF *wm;
 264
 265     RtlEnterCriticalSection( &loader_section );
 266     if (bForceDetach) process_detaching = 1;
 267     do
 268     {
 269         for ( wm = MODULE_modref_list; wm; wm = wm->next )
 270         {
 271             /* Check whether to detach this DLL */
 272             if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 273                 continue;
 274             if ( wm->refCount > 0 && !bForceDetach )
 275                 continue;
 276
 277             /* Call detach notification */
 278             wm->flags &= ~WINE_MODREF_PROCESS_ATTACHED;
 279             MODULE_InitDLL( wm, DLL_PROCESS_DETACH, lpReserved );
 280
 281             /* Restart at head of WINE_MODREF list, as entries might have
 282                been added and/or removed while performing the call ... */
 283             break;
 284         }
 285     } while ( wm );
 286
 287     RtlLeaveCriticalSection( &loader_section );
 288 }
 289
 290 /*************************************************************************
 291  *              MODULE_DllThreadAttach
 292  *
 293  * Send DLL thread attach notifications. These are sent in the
 294  * reverse sequence of process detach notification.
 295  *
 296  */
 297 void MODULE_DllThreadAttach( LPVOID lpReserved )
 298 {
 299     WINE_MODREF *wm;
 300
 301     /* don't do any attach calls if process is exiting */
 302     if (process_detaching) return;
 303     /* FIXME: there is still a race here */
 304
 305     RtlEnterCriticalSection( &loader_section );
 306
 307     PE_InitTls();
 308
 309     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 310         if ( !wm->next )
 311             break;
 312
 313     for ( ; wm; wm = wm->prev )
 314     {
 315         if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 316             continue;
 317         if ( wm->flags & WINE_MODREF_NO_DLL_CALLS )
 318             continue;
 319
 320         MODULE_InitDLL( wm, DLL_THREAD_ATTACH, lpReserved );
 321     }
 322
 323     RtlLeaveCriticalSection( &loader_section );
 324 }
 325
 326 /*************************************************************************
 327  *              MODULE_DllThreadDetach
 328  *
 329  * Send DLL thread detach notifications. These are sent in the
 330  * same sequence as process detach notification.
 331  *
 332  */
 333 void MODULE_DllThreadDetach( LPVOID lpReserved )
 334 {
 335     WINE_MODREF *wm;
 336
 337     /* don't do any detach calls if process is exiting */
 338     if (process_detaching) return;
 339     /* FIXME: there is still a race here */
 340
 341     RtlEnterCriticalSection( &loader_section );
 342
 343     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 344     {
 345         if ( !(wm->flags & WINE_MODREF_PROCESS_ATTACHED) )
 346             continue;
 347         if ( wm->flags & WINE_MODREF_NO_DLL_CALLS )
 348             continue;
 349
 350         MODULE_InitDLL( wm, DLL_THREAD_DETACH, lpReserved );
 351     }
 352
 353     RtlLeaveCriticalSection( &loader_section );
 354 }
 355
 356 /****************************************************************************
 357  *              DisableThreadLibraryCalls (KERNEL32.@)
 358  *
 359  * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
 360  */
 361 BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
 362 {
 363     WINE_MODREF *wm;
 364     BOOL retval = TRUE;
 365
 366     RtlEnterCriticalSection( &loader_section );
 367
 368     wm = MODULE32_LookupHMODULE( hModule );
 369     if ( !wm )
 370         retval = FALSE;
 371     else
 372         wm->flags |= WINE_MODREF_NO_DLL_CALLS;
 373
 374     RtlLeaveCriticalSection( &loader_section );
 375
 376     return retval;
 377 }
 378
 379
 380 /***********************************************************************
 381  *           MODULE_CreateDummyModule
 382  *
 383  * Create a dummy NE module for Win32 or Winelib.
 384  */
 385 HMODULE16 MODULE_CreateDummyModule( LPCSTR filename, HMODULE module32 )
 386 {
 387     HMODULE16 hModule;
 388     NE_MODULE *pModule;
 389     SEGTABLEENTRY *pSegment;
 390     char *pStr,*s;
 391     unsigned int len;
 392     const char* basename;
 393     OFSTRUCT *ofs;
 394     int of_size, size;
 395
 396     /* Extract base filename */
 397     basename = strrchr(filename, '\\');
 398     if (!basename) basename = filename;
 399     else basename++;
 400     len = strlen(basename);
 401     if ((s = strchr(basename, '.'))) len = s - basename;
 402
 403     /* Allocate module */
 404     of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
 405                     + strlen(filename) + 1;
 406     size = sizeof(NE_MODULE) +
 407                  /* loaded file info */
 408                  ((of_size + 3) & ~3) +
 409                  /* segment table: DS,CS */
 410                  2 * sizeof(SEGTABLEENTRY) +
 411                  /* name table */
 412                  len + 2 +
 413                  /* several empty tables */
 414                  8;
 415
 416     hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
 417     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 418
 419     FarSetOwner16( hModule, hModule );
 420     pModule = (NE_MODULE *)GlobalLock16( hModule );
 421
 422     /* Set all used entries */
 423     pModule->magic            = IMAGE_OS2_SIGNATURE;
 424     pModule->count            = 1;
 425     pModule->next             = 0;
 426     pModule->flags            = 0;
 427     pModule->dgroup           = 0;
 428     pModule->ss               = 1;
 429     pModule->cs               = 2;
 430     pModule->heap_size        = 0;
 431     pModule->stack_size       = 0;
 432     pModule->seg_count        = 2;
 433     pModule->modref_count     = 0;
 434     pModule->nrname_size      = 0;
 435     pModule->fileinfo         = sizeof(NE_MODULE);
 436     pModule->os_flags         = NE_OSFLAGS_WINDOWS;
 437     pModule->self             = hModule;
 438     pModule->module32         = module32;
 439
 440     /* Set version and flags */
 441     if (module32)
 442     {
 443         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 );
 444         pModule->expected_version = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
 445                                      (nt->OptionalHeader.MinorSubsystemVersion & 0xff);
 446         pModule->flags |= NE_FFLAGS_WIN32;
 447         if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
 448             pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
 449     }
 450
 451     /* Set loaded file information */
 452     ofs = (OFSTRUCT *)(pModule + 1);
 453     memset( ofs, 0, of_size );
 454     ofs->cBytes = of_size < 256 ? of_size : 255;   /* FIXME */
 455     strcpy( ofs->szPathName, filename );
 456
 457     pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
 458     pModule->seg_table = (int)pSegment - (int)pModule;
 459     /* Data segment */
 460     pSegment->size    = 0;
 461     pSegment->flags   = NE_SEGFLAGS_DATA;
 462     pSegment->minsize = 0x1000;
 463     pSegment++;
 464     /* Code segment */
 465     pSegment->flags   = 0;
 466     pSegment++;
 467
 468     /* Module name */
 469     pStr = (char *)pSegment;
 470     pModule->name_table = (int)pStr - (int)pModule;
 471     assert(len<256);
 472     *pStr = len;
 473     lstrcpynA( pStr+1, basename, len+1 );
 474     pStr += len+2;
 475
 476     /* All tables zero terminated */
 477     pModule->res_table = pModule->import_table = pModule->entry_table =
 478                 (int)pStr - (int)pModule;
 479
 480     NE_RegisterModule( pModule );
 481     return hModule;
 482 }
 483
 484
 485 /**********************************************************************
 486  *          MODULE_FindModule
 487  *
 488  * Find a (loaded) win32 module depending on path
 489  *
 490  * RETURNS
 491  *      the module handle if found
 492  *      0 if not
 493  */
 494 WINE_MODREF *MODULE_FindModule(
 495         LPCSTR path     /* [in] pathname of module/library to be found */
 496 ) {
 497     WINE_MODREF *wm;
 498     char dllname[260], *p;
 499
 500     /* Append .DLL to name if no extension present */
 501     strcpy( dllname, path );
 502     if (!(p = strrchr( dllname, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 503             strcat( dllname, ".DLL" );
 504
 505     for ( wm = MODULE_modref_list; wm; wm = wm->next )
 506     {
 507         if ( !FILE_strcasecmp( dllname, wm->modname ) )
 508             break;
 509         if ( !FILE_strcasecmp( dllname, wm->filename ) )
 510             break;
 511         if ( !FILE_strcasecmp( dllname, wm->short_modname ) )
 512             break;
 513         if ( !FILE_strcasecmp( dllname, wm->short_filename ) )
 514             break;
 515     }
 516
 517     return wm;
 518 }
 519
 520
 521 /* Check whether a file is an OS/2 or a very old Windows executable
 522  * by testing on import of KERNEL.
 523  *
 524  * FIXME: is reading the module imports the only way of discerning
 525  *        old Windows binaries from OS/2 ones ? At least it seems so...
 526  */
 527 static enum binary_type MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz,
 528                                                  const IMAGE_OS2_HEADER *ne)
 529 {
 530     DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
 531     enum binary_type ret = BINARY_OS216;
 532     LPWORD modtab = NULL;
 533     LPSTR nametab = NULL;
 534     DWORD len;
 535     int i;
 536
 537     /* read modref table */
 538     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
 539       || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
 540       || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
 541       || (len != ne->ne_cmod*sizeof(WORD)) )
 542         goto broken;
 543
 544     /* read imported names table */
 545     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
 546       || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
 547       || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
 548       || (len != ne->ne_enttab - ne->ne_imptab) )
 549         goto broken;
 550
 551     for (i=0; i < ne->ne_cmod; i++)
 552     {
 553         LPSTR module = &nametab[modtab[i]];
 554         TRACE("modref: %.*s\n", module[0], &module[1]);
 555         if (!(strncmp(&module[1], "KERNEL", module[0])))
 556         { /* very old Windows file */
 557             MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
 558             ret = BINARY_WIN16;
 559             goto good;
 560         }
 561     }
 562
 563 broken:
 564     ERR("Hmm, an error occurred. Is this binary file broken ?\n");
 565
 566 good:
 567     HeapFree( GetProcessHeap(), 0, modtab);
 568     HeapFree( GetProcessHeap(), 0, nametab);
 569     SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
 570     return ret;
 571 }
 572
 573 /***********************************************************************
 574  *           MODULE_GetBinaryType
 575  */
 576 enum binary_type MODULE_GetBinaryType( HANDLE hfile )
 577 {
 578     union
 579     {
 580         struct
 581         {
 582             unsigned char magic[4];
 583             unsigned char ignored[12];
 584             unsigned short type;
 585         } elf;
 586         IMAGE_DOS_HEADER mz;
 587     } header;
 588
 589     char magic[4];
 590     DWORD len;
 591
 592     /* Seek to the start of the file and read the header information. */
 593     if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1)
 594         return BINARY_UNKNOWN;
 595     if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header))
 596         return BINARY_UNKNOWN;
 597
 598     if (!memcmp( header.elf.magic, "\177ELF", 4 ))
 599     {
 600         /* FIXME: we don't bother to check byte order, architecture, etc. */
 601         switch(header.elf.type)
 602         {
 603         case 2: return BINARY_UNIX_EXE;
 604         case 3: return BINARY_UNIX_LIB;
 605         }
 606         return BINARY_UNKNOWN;
 607     }
 608
 609     /* Not ELF, try DOS */
 610
 611     if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
 612     {
 613         /* We do have a DOS image so we will now try to seek into
 614          * the file by the amount indicated by the field
 615          * "Offset to extended header" and read in the
 616          * "magic" field information at that location.
 617          * This will tell us if there is more header information
 618          * to read or not.
 619          */
 620         /* But before we do we will make sure that header
 621          * structure encompasses the "Offset to extended header"
 622          * field.
 623          */
 624         if ((header.mz.e_cparhdr << 4) < sizeof(IMAGE_DOS_HEADER))
 625             return BINARY_DOS;
 626         if (header.mz.e_crlc && (header.mz.e_lfarlc < sizeof(IMAGE_DOS_HEADER)))
 627             return BINARY_DOS;
 628         if (header.mz.e_lfanew < sizeof(IMAGE_DOS_HEADER))
 629             return BINARY_DOS;
 630         if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1)
 631             return BINARY_DOS;
 632         if (!ReadFile( hfile, magic, sizeof(magic), &len, NULL ) || len != sizeof(magic))
 633             return BINARY_DOS;
 634
 635         /* Reading the magic field succeeded so
 636          * we will try to determine what type it is.
 637          */
 638         if (!memcmp( magic, "PE\0\0", 4 ))
 639         {
 640             IMAGE_FILE_HEADER FileHeader;
 641
 642             if (ReadFile( hfile, &FileHeader, sizeof(FileHeader), &len, NULL ) && len == sizeof(FileHeader))
 643             {
 644                 if (FileHeader.Characteristics & IMAGE_FILE_DLL) return BINARY_PE_DLL;
 645                 return BINARY_PE_EXE;
 646             }
 647             return BINARY_DOS;
 648         }
 649
 650         if (!memcmp( magic, "NE", 2 ))
 651         {
 652             /* This is a Windows executable (NE) header.  This can
 653              * mean either a 16-bit OS/2 or a 16-bit Windows or even a
 654              * DOS program (running under a DOS extender).  To decide
 655              * which, we'll have to read the NE header.
 656              */
 657             IMAGE_OS2_HEADER ne;
 658             if (    SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) != -1
 659                     && ReadFile( hfile, &ne, sizeof(ne), &len, NULL )
 660                     && len == sizeof(ne) )
 661             {
 662                 switch ( ne.ne_exetyp )
 663                 {
 664                 case 2:  return BINARY_WIN16;
 665                 case 5:  return BINARY_DOS;
 666                 default: return MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ne);
 667                 }
 668             }
 669             /* Couldn't read header, so abort. */
 670             return BINARY_DOS;
 671         }
 672
 673         /* Unknown extended header, but this file is nonetheless DOS-executable. */
 674         return BINARY_DOS;
 675     }
 676
 677     return BINARY_UNKNOWN;
 678 }
 679
 680 /***********************************************************************
 681  *             GetBinaryTypeA                     [KERNEL32.@]
 682  *             GetBinaryType                      [KERNEL32.@]
 683  *
 684  * The GetBinaryType function determines whether a file is executable
 685  * or not and if it is it returns what type of executable it is.
 686  * The type of executable is a property that determines in which
 687  * subsystem an executable file runs under.
 688  *
 689  * Binary types returned:
 690  * SCS_32BIT_BINARY: A Win32 based application
 691  * SCS_DOS_BINARY: An MS-Dos based application
 692  * SCS_WOW_BINARY: A Win16 based application
 693  * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
 694  * SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
 695  * SCS_OS216_BINARY: A 16bit OS/2 based application
 696  *
 697  * Returns TRUE if the file is an executable in which case
 698  * the value pointed by lpBinaryType is set.
 699  * Returns FALSE if the file is not an executable or if the function fails.
 700  *
 701  * To do so it opens the file and reads in the header information
 702  * if the extended header information is not present it will
 703  * assume that the file is a DOS executable.
 704  * If the extended header information is present it will
 705  * determine if the file is a 16 or 32 bit Windows executable
 706  * by check the flags in the header.
 707  *
 708  * Note that .COM and .PIF files are only recognized by their
 709  * file name extension; but Windows does it the same way ...
 710  */
 711 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
 712 {
 713     BOOL ret = FALSE;
 714     HANDLE hfile;
 715     char *ptr;
 716
 717     TRACE_(win32)("%s\n", lpApplicationName );
 718
 719     /* Sanity check.
 720      */
 721     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 722         return FALSE;
 723
 724     /* Open the file indicated by lpApplicationName for reading.
 725      */
 726     hfile = CreateFileA( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
 727                          NULL, OPEN_EXISTING, 0, 0 );
 728     if ( hfile == INVALID_HANDLE_VALUE )
 729         return FALSE;
 730
 731     /* Check binary type
 732      */
 733     switch(MODULE_GetBinaryType( hfile ))
 734     {
 735     case BINARY_UNKNOWN:
 736         /* try to determine from file name */
 737         ptr = strrchr( lpApplicationName, '.' );
 738         if (!ptr) break;
 739         if (!FILE_strcasecmp( ptr, ".COM" ))
 740         {
 741             *lpBinaryType = SCS_DOS_BINARY;
 742             ret = TRUE;
 743         }
 744         else if (!FILE_strcasecmp( ptr, ".PIF" ))
 745         {
 746             *lpBinaryType = SCS_PIF_BINARY;
 747             ret = TRUE;
 748         }
 749         break;
 750     case BINARY_PE_EXE:
 751     case BINARY_PE_DLL:
 752         *lpBinaryType = SCS_32BIT_BINARY;
 753         ret = TRUE;
 754         break;
 755     case BINARY_WIN16:
 756         *lpBinaryType = SCS_WOW_BINARY;
 757         ret = TRUE;
 758         break;
 759     case BINARY_OS216:
 760         *lpBinaryType = SCS_OS216_BINARY;
 761         ret = TRUE;
 762         break;
 763     case BINARY_DOS:
 764         *lpBinaryType = SCS_DOS_BINARY;
 765         ret = TRUE;
 766         break;
 767     case BINARY_UNIX_EXE:
 768     case BINARY_UNIX_LIB:
 769         ret = FALSE;
 770         break;
 771     }
 772
 773     CloseHandle( hfile );
 774     return ret;
 775 }
 776
 777 /***********************************************************************
 778  *             GetBinaryTypeW                      [KERNEL32.@]
 779  */
 780 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
 781 {
 782     BOOL ret = FALSE;
 783     LPSTR strNew = NULL;
 784
 785     TRACE_(win32)("%s\n", debugstr_w(lpApplicationName) );
 786
 787     /* Sanity check.
 788      */
 789     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 790         return FALSE;
 791
 792     /* Convert the wide string to a ascii string.
 793      */
 794     strNew = HEAP_strdupWtoA( GetProcessHeap(), 0, lpApplicationName );
 795
 796     if ( strNew != NULL )
 797     {
 798         ret = GetBinaryTypeA( strNew, lpBinaryType );
 799
 800         /* Free the allocated string.
 801          */
 802         HeapFree( GetProcessHeap(), 0, strNew );
 803     }
 804
 805     return ret;
 806 }
 807
 808
 809 /***********************************************************************
 810  *           WinExec     (KERNEL.166)
 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                 pwm->refCount++;
1256
1257                 if ((pwm->flags & WINE_MODREF_DONT_RESOLVE_REFS) &&
1258                     !(flags & DONT_RESOLVE_DLL_REFERENCES))
1259                 {
1260                     pwm->flags &= ~WINE_MODREF_DONT_RESOLVE_REFS;
1261                     PE_fixup_imports( pwm );
1262                 }
1263                 TRACE("Already loaded module '%s' at 0x%08x, count=%d\n", filename, pwm->module, pwm->refCount);
1264                 if (allocated_libdir)
1265                 {
1266                     HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1267                     libdir = NULL;
1268                 }
1269                 RtlLeaveCriticalSection( &loader_section );
1270                 HeapFree ( GetProcessHeap(), 0, filename );
1271                 return pwm;
1272         }
1273
1274         MODULE_GetLoadOrder( loadorder, filename, TRUE);
1275
1276         for(i = 0; i < LOADORDER_NTYPES; i++)
1277         {
1278                 if (loadorder[i] == LOADORDER_INVALID) break;
1279                 SetLastError( ERROR_FILE_NOT_FOUND );
1280
1281                 switch(loadorder[i])
1282                 {
1283                 case LOADORDER_DLL:
1284                         TRACE("Trying native dll '%s'\n", filename);
1285                         pwm = PE_LoadLibraryExA(filename, flags);
1286                         filetype = "native";
1287                         break;
1288
1289                 case LOADORDER_SO:
1290                         TRACE("Trying so-library '%s'\n", filename);
1291                         pwm = ELF_LoadLibraryExA(filename, flags);
1292                         filetype = "so";
1293                         break;
1294
1295                 case LOADORDER_BI:
1296                         TRACE("Trying built-in '%s'\n", filename);
1297                         pwm = BUILTIN32_LoadLibraryExA(filename, flags);
1298                         filetype = "builtin";
1299                         break;
1300
1301                 default:
1302                         pwm = NULL;
1303                         break;
1304                 }
1305
1306                 if(pwm)
1307                 {
1308                         /* Initialize DLL just loaded */
1309                         TRACE("Loaded module '%s' at 0x%08x\n", filename, pwm->module);
1310                         if (!TRACE_ON(module))
1311                             TRACE_(loaddll)("Loaded module '%s' : %s\n", filename, filetype);
1312                         /* Set the refCount here so that an attach failure will */
1313                         /* decrement the dependencies through the MODULE_FreeLibrary call. */
1314                         pwm->refCount = 1;
1315
1316                         if (allocated_libdir)
1317                         {
1318                             HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1319                             libdir = NULL;
1320                         }
1321                         RtlLeaveCriticalSection( &loader_section );
1322                         SetLastError( err );  /* restore last error */
1323                         HeapFree ( GetProcessHeap(), 0, filename );
1324                         return pwm;
1325                 }
1326
1327                 if(GetLastError() != ERROR_FILE_NOT_FOUND)
1328                 {
1329                     WARN("Loading of %s DLL %s failed (error %ld).\n",
1330                          filetype, filename, GetLastError());
1331                     break;
1332                 }
1333         }
1334
1335  error:
1336         if (allocated_libdir)
1337         {
1338             HeapFree ( GetProcessHeap(), 0, (LPSTR)libdir );
1339             libdir = NULL;
1340         }
1341         RtlLeaveCriticalSection( &loader_section );
1342         WARN("Failed to load module '%s'; error=%ld\n", filename, GetLastError());
1343         HeapFree ( GetProcessHeap(), 0, filename );
1344         return NULL;
1345 }
1346
1347 /***********************************************************************
1348  *           LoadLibraryA         (KERNEL32.@)
1349  */
1350 HMODULE WINAPI LoadLibraryA(LPCSTR libname) {
1351         return LoadLibraryExA(libname,0,0);
1352 }
1353
1354 /***********************************************************************
1355  *           LoadLibraryW         (KERNEL32.@)
1356  */
1357 HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW)
1358 {
1359     return LoadLibraryExW(libnameW,0,0);
1360 }
1361
1362 /***********************************************************************
1363  *           LoadLibrary32        (KERNEL.452)
1364  *           LoadSystemLibrary32  (KERNEL.482)
1365  */
1366 HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
1367 {
1368     HMODULE hModule;
1369     DWORD count;
1370
1371     ReleaseThunkLock( &count );
1372     hModule = LoadLibraryA( libname );
1373     RestoreThunkLock( count );
1374     return hModule;
1375 }
1376
1377 /***********************************************************************
1378  *           LoadLibraryExW       (KERNEL32.@)
1379  */
1380 HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW,HANDLE hfile,DWORD flags)
1381 {
1382     LPSTR libnameA = HEAP_strdupWtoA( GetProcessHeap(), 0, libnameW );
1383     HMODULE ret = LoadLibraryExA( libnameA , hfile, flags );
1384
1385     HeapFree( GetProcessHeap(), 0, libnameA );
1386     return ret;
1387 }
1388
1389 /***********************************************************************
1390  *           MODULE_FlushModrefs
1391  *
1392  * NOTE: Assumes that the process critical section is held!
1393  *
1394  * Remove all unused modrefs and call the internal unloading routines
1395  * for the library type.
1396  */
1397 static void MODULE_FlushModrefs(void)
1398 {
1399         WINE_MODREF *wm, *next;
1400
1401         for(wm = MODULE_modref_list; wm; wm = next)
1402         {
1403                 next = wm->next;
1404
1405                 if(wm->refCount)
1406                         continue;
1407
1408                 /* Unlink this modref from the chain */
1409                 if(wm->next)
1410                         wm->next->prev = wm->prev;
1411                 if(wm->prev)
1412                         wm->prev->next = wm->next;
1413                 if(wm == MODULE_modref_list)
1414                         MODULE_modref_list = wm->next;
1415
1416                 TRACE(" unloading %s\n", wm->filename);
1417                 if (!TRACE_ON(module))
1418                     TRACE_(loaddll)("Unloaded module '%s' : %s\n", wm->filename,
1419                                     wm->dlhandle ? "builtin" : "native" );
1420
1421                 if (wm->dlhandle) wine_dll_unload( wm->dlhandle );
1422                 else UnmapViewOfFile( (LPVOID)wm->module );
1423                 FreeLibrary16(wm->hDummyMod);
1424                 HeapFree( GetProcessHeap(), 0, wm->deps );
1425                 HeapFree( GetProcessHeap(), 0, wm );
1426         }
1427 }
1428
1429 /***********************************************************************
1430  *           FreeLibrary   (KERNEL32.@)
1431  *           FreeLibrary32 (KERNEL.486)
1432  */
1433 BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
1434 {
1435     BOOL retv = FALSE;
1436     WINE_MODREF *wm;
1437
1438     if (!hLibModule)
1439     {
1440         SetLastError( ERROR_INVALID_HANDLE );
1441         return FALSE;
1442     }
1443
1444     if ((ULONG_PTR)hLibModule & 1)
1445     {
1446         /* this is a LOAD_LIBRARY_AS_DATAFILE module */
1447         char *ptr = (char *)hLibModule - 1;
1448         UnmapViewOfFile( ptr );
1449         return TRUE;
1450     }
1451
1452     RtlEnterCriticalSection( &loader_section );
1453     free_lib_count++;
1454
1455     if ((wm = MODULE32_LookupHMODULE( hLibModule ))) retv = MODULE_FreeLibrary( wm );
1456
1457     free_lib_count--;
1458     RtlLeaveCriticalSection( &loader_section );
1459
1460     return retv;
1461 }
1462
1463 /***********************************************************************
1464  *           MODULE_DecRefCount
1465  *
1466  * NOTE: Assumes that the process critical section is held!
1467  */
1468 static void MODULE_DecRefCount( WINE_MODREF *wm )
1469 {
1470     int i;
1471
1472     if ( wm->flags & WINE_MODREF_MARKER )
1473         return;
1474
1475     if ( wm->refCount <= 0 )
1476         return;
1477
1478     --wm->refCount;
1479     TRACE("(%s) refCount: %d\n", wm->modname, wm->refCount );
1480
1481     if ( wm->refCount == 0 )
1482     {
1483         wm->flags |= WINE_MODREF_MARKER;
1484
1485         for ( i = 0; i < wm->nDeps; i++ )
1486             if ( wm->deps[i] )
1487                 MODULE_DecRefCount( wm->deps[i] );
1488
1489         wm->flags &= ~WINE_MODREF_MARKER;
1490     }
1491 }
1492
1493 /***********************************************************************
1494  *           MODULE_FreeLibrary
1495  *
1496  * NOTE: Assumes that the process critical section is held!
1497  */
1498 BOOL MODULE_FreeLibrary( WINE_MODREF *wm )
1499 {
1500     TRACE("(%s) - START\n", wm->modname );
1501
1502     /* Recursively decrement reference counts */
1503     MODULE_DecRefCount( wm );
1504
1505     /* Call process detach notifications */
1506     if ( free_lib_count <= 1 )
1507     {
1508         MODULE_DllProcessDetach( FALSE, NULL );
1509         SERVER_START_REQ( unload_dll )
1510         {
1511             req->base = (void *)wm->module;
1512             wine_server_call( req );
1513         }
1514         SERVER_END_REQ;
1515         MODULE_FlushModrefs();
1516     }
1517
1518     TRACE("END\n");
1519
1520     return TRUE;
1521 }
1522
1523
1524 /***********************************************************************
1525  *           FreeLibraryAndExitThread (KERNEL32.@)
1526  */
1527 VOID WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
1528 {
1529     FreeLibrary(hLibModule);
1530     ExitThread(dwExitCode);
1531 }
1532
1533 /***********************************************************************
1534  *           PrivateLoadLibrary       (KERNEL32.@)
1535  *
1536  * FIXME: rough guesswork, don't know what "Private" means
1537  */
1538 HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
1539 {
1540     return LoadLibrary16(libname);
1541 }
1542
1543
1544
1545 /***********************************************************************
1546  *           PrivateFreeLibrary       (KERNEL32.@)
1547  *
1548  * FIXME: rough guesswork, don't know what "Private" means
1549  */
1550 void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
1551 {
1552     FreeLibrary16(handle);
1553 }
1554
1555
1556 /***********************************************************************
1557  *           GetProcAddress16   (KERNEL32.37)
1558  * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
1559  */
1560 FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
1561 {
1562     if (!hModule) {
1563         WARN("hModule may not be 0!\n");
1564         return (FARPROC16)0;
1565     }
1566     if (HIWORD(hModule))
1567     {
1568         WARN("hModule is Win32 handle (%08x)\n", hModule );
1569         return (FARPROC16)0;
1570     }
1571     return GetProcAddress16( LOWORD(hModule), name );
1572 }
1573
1574 /***********************************************************************
1575  *           GetProcAddress   (KERNEL.50)
1576  */
1577 FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name )
1578 {
1579     WORD ordinal;
1580     FARPROC16 ret;
1581
1582     if (!hModule) hModule = GetCurrentTask();
1583     hModule = GetExePtr( hModule );
1584
1585     if (HIWORD(name) != 0)
1586     {
1587         ordinal = NE_GetOrdinal( hModule, name );
1588         TRACE("%04x '%s'\n", hModule, name );
1589     }
1590     else
1591     {
1592         ordinal = LOWORD(name);
1593         TRACE("%04x %04x\n", hModule, ordinal );
1594     }
1595     if (!ordinal) return (FARPROC16)0;
1596
1597     ret = NE_GetEntryPoint( hModule, ordinal );
1598
1599     TRACE("returning %08x\n", (UINT)ret );
1600     return ret;
1601 }
1602
1603
1604 /***********************************************************************
1605  *           GetProcAddress             (KERNEL32.@)
1606  */
1607 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
1608 {
1609     return MODULE_GetProcAddress( hModule, function, -1, TRUE );
1610 }
1611
1612 /***********************************************************************
1613  *           GetProcAddress32                   (KERNEL.453)
1614  */
1615 FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function )
1616 {
1617     return MODULE_GetProcAddress( hModule, function, -1, FALSE );
1618 }
1619
1620 /***********************************************************************
1621  *           MODULE_GetProcAddress              (internal)
1622  */
1623 FARPROC MODULE_GetProcAddress(
1624         HMODULE hModule,        /* [in] current module handle */
1625         LPCSTR function,        /* [in] function to be looked up */
1626         int hint,
1627         BOOL snoop )
1628 {
1629     WINE_MODREF *wm;
1630     FARPROC     retproc = 0;
1631
1632     if (HIWORD(function))
1633         TRACE_(win32)("(%08lx,%s (%d))\n",(DWORD)hModule,function,hint);
1634     else
1635         TRACE_(win32)("(%08lx,%p)\n",(DWORD)hModule,function);
1636
1637     RtlEnterCriticalSection( &loader_section );
1638     if ((wm = MODULE32_LookupHMODULE( hModule )))
1639     {
1640         retproc = wm->find_export( wm, function, hint, snoop );
1641         if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND);
1642     }
1643     RtlLeaveCriticalSection( &loader_section );
1644     return retproc;
1645 }
1646
1647
1648 /***************************************************************************
1649  *              HasGPHandler                    (KERNEL.338)
1650  */
1651
1652 #include "pshpack1.h"
1653 typedef struct _GPHANDLERDEF
1654 {
1655     WORD selector;
1656     WORD rangeStart;
1657     WORD rangeEnd;
1658     WORD handler;
1659 } GPHANDLERDEF;
1660 #include "poppack.h"
1661
1662 SEGPTR WINAPI HasGPHandler16( SEGPTR address )
1663 {
1664     HMODULE16 hModule;
1665     int gpOrdinal;
1666     SEGPTR gpPtr;
1667     GPHANDLERDEF *gpHandler;
1668
1669     if (    (hModule = FarGetOwner16( SELECTOROF(address) )) != 0
1670          && (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0
1671          && (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0
1672          && !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) )
1673          && (gpHandler = MapSL( gpPtr )) != NULL )
1674     {
1675         while (gpHandler->selector)
1676         {
1677             if (    SELECTOROF(address) == gpHandler->selector
1678                  && OFFSETOF(address)   >= gpHandler->rangeStart
1679                  && OFFSETOF(address)   <  gpHandler->rangeEnd  )
1680                 return MAKESEGPTR( gpHandler->selector, gpHandler->handler );
1681             gpHandler++;
1682         }
1683     }
1684
1685     return 0;
1686 }