dlls/kernel32/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <fcntl.h>
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/types.h>
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33 #include "ntstatus.h"
  34 #define WIN32_NO_STATUS
  35 #include "winerror.h"
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "winternl.h"
  39 #include "kernel_private.h"
  40 #include "psapi.h"
  41
  42 #include "wine/exception.h"
  43 #include "wine/debug.h"
  44 #include "wine/unicode.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(module);
  47
  48 #define NE_FFLAGS_LIBMODULE 0x8000
  49
  50 static WCHAR *dll_directory;  /* extra path for SetDllDirectoryW */
  51
  52 static CRITICAL_SECTION dlldir_section;
  53 static CRITICAL_SECTION_DEBUG critsect_debug =
  54 {
  55     0, 0, &dlldir_section,
  56     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  57       0, 0, { (DWORD_PTR)(__FILE__ ": dlldir_section") }
  58 };
  59 static CRITICAL_SECTION dlldir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  60
  61
  62 /****************************************************************************
  63  *              GetDllDirectoryA   (KERNEL32.@)
  64  */
  65 DWORD WINAPI GetDllDirectoryA( DWORD buf_len, LPSTR buffer )
  66 {
  67     DWORD len;
  68
  69     RtlEnterCriticalSection( &dlldir_section );
  70     len = dll_directory ? FILE_name_WtoA( dll_directory, strlenW(dll_directory), NULL, 0 ) : 0;
  71     if (buffer && buf_len > len)
  72     {
  73         if (dll_directory) FILE_name_WtoA( dll_directory, -1, buffer, buf_len );
  74         else *buffer = 0;
  75     }
  76     else
  77     {
  78         len++;  /* for terminating null */
  79         if (buffer) *buffer = 0;
  80     }
  81     RtlLeaveCriticalSection( &dlldir_section );
  82     return len;
  83 }
  84
  85
  86 /****************************************************************************
  87  *              GetDllDirectoryW   (KERNEL32.@)
  88  */
  89 DWORD WINAPI GetDllDirectoryW( DWORD buf_len, LPWSTR buffer )
  90 {
  91     DWORD len;
  92
  93     RtlEnterCriticalSection( &dlldir_section );
  94     len = dll_directory ? strlenW( dll_directory ) : 0;
  95     if (buffer && buf_len > len)
  96     {
  97         if (dll_directory) memcpy( buffer, dll_directory, (len + 1) * sizeof(WCHAR) );
  98         else *buffer = 0;
  99     }
 100     else
 101     {
 102         len++;  /* for terminating null */
 103         if (buffer) *buffer = 0;
 104     }
 105     RtlLeaveCriticalSection( &dlldir_section );
 106     return len;
 107 }
 108
 109
 110 /****************************************************************************
 111  *              SetDllDirectoryA   (KERNEL32.@)
 112  */
 113 BOOL WINAPI SetDllDirectoryA( LPCSTR dir )
 114 {
 115     WCHAR *dirW;
 116     BOOL ret;
 117
 118     if (!(dirW = FILE_name_AtoW( dir, TRUE ))) return FALSE;
 119     ret = SetDllDirectoryW( dirW );
 120     HeapFree( GetProcessHeap(), 0, dirW );
 121     return ret;
 122 }
 123
 124
 125 /****************************************************************************
 126  *              SetDllDirectoryW   (KERNEL32.@)
 127  */
 128 BOOL WINAPI SetDllDirectoryW( LPCWSTR dir )
 129 {
 130     WCHAR *newdir = NULL;
 131
 132     if (dir)
 133     {
 134         DWORD len = (strlenW(dir) + 1) * sizeof(WCHAR);
 135         if (!(newdir = HeapAlloc( GetProcessHeap(), 0, len )))
 136         {
 137             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 138             return FALSE;
 139         }
 140         memcpy( newdir, dir, len );
 141     }
 142
 143     RtlEnterCriticalSection( &dlldir_section );
 144     HeapFree( GetProcessHeap(), 0, dll_directory );
 145     dll_directory = newdir;
 146     RtlLeaveCriticalSection( &dlldir_section );
 147     return TRUE;
 148 }
 149
 150
 151 /****************************************************************************
 152  *              DisableThreadLibraryCalls (KERNEL32.@)
 153  *
 154  * Inform the module loader that thread notifications are not required for a dll.
 155  *
 156  * PARAMS
 157  *  hModule [I] Module handle to skip calls for
 158  *
 159  * RETURNS
 160  *  Success: TRUE. Thread attach and detach notifications will not be sent
 161  *           to hModule.
 162  *  Failure: FALSE. Use GetLastError() to determine the cause.
 163  *
 164  * NOTES
 165  *  This is typically called from the dll entry point of a dll during process
 166  *  attachment, for dlls that do not need to process thread notifications.
 167  */
 168 BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
 169 {
 170     NTSTATUS    nts = LdrDisableThreadCalloutsForDll( hModule );
 171     if (nts == STATUS_SUCCESS) return TRUE;
 172
 173     SetLastError( RtlNtStatusToDosError( nts ) );
 174     return FALSE;
 175 }
 176
 177
 178 /* Check whether a file is an OS/2 or a very old Windows executable
 179  * by testing on import of KERNEL.
 180  *
 181  * FIXME: is reading the module imports the only way of discerning
 182  *        old Windows binaries from OS/2 ones ? At least it seems so...
 183  */
 184 static DWORD MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz, const IMAGE_OS2_HEADER *ne)
 185 {
 186     DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
 187     DWORD ret = BINARY_OS216;
 188     LPWORD modtab = NULL;
 189     LPSTR nametab = NULL;
 190     DWORD len;
 191     int i;
 192
 193     /* read modref table */
 194     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
 195       || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
 196       || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
 197       || (len != ne->ne_cmod*sizeof(WORD)) )
 198         goto broken;
 199
 200     /* read imported names table */
 201     if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
 202       || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
 203       || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
 204       || (len != ne->ne_enttab - ne->ne_imptab) )
 205         goto broken;
 206
 207     for (i=0; i < ne->ne_cmod; i++)
 208     {
 209         LPSTR module = &nametab[modtab[i]];
 210         TRACE("modref: %.*s\n", module[0], &module[1]);
 211         if (!(strncmp(&module[1], "KERNEL", module[0])))
 212         { /* very old Windows file */
 213             MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
 214             ret = BINARY_WIN16;
 215             goto good;
 216         }
 217     }
 218
 219 broken:
 220     ERR("Hmm, an error occurred. Is this binary file broken?\n");
 221
 222 good:
 223     HeapFree( GetProcessHeap(), 0, modtab);
 224     HeapFree( GetProcessHeap(), 0, nametab);
 225     SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
 226     return ret;
 227 }
 228
 229 /***********************************************************************
 230  *           MODULE_GetBinaryType
 231  */
 232 void MODULE_get_binary_info( HANDLE hfile, struct binary_info *info )
 233 {
 234     union
 235     {
 236         struct
 237         {
 238             unsigned char magic[4];
 239             unsigned char class;
 240             unsigned char data;
 241             unsigned char version;
 242             unsigned char ignored[9];
 243             unsigned short type;
 244             unsigned short machine;
 245         } elf;
 246         struct
 247         {
 248             unsigned int magic;
 249             unsigned int cputype;
 250             unsigned int cpusubtype;
 251             unsigned int filetype;
 252         } macho;
 253         IMAGE_DOS_HEADER mz;
 254     } header;
 255
 256     DWORD len;
 257
 258     memset( info, 0, sizeof(*info) );
 259
 260     /* Seek to the start of the file and read the header information. */
 261     if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1) return;
 262     if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header)) return;
 263
 264     if (!memcmp( header.elf.magic, "\177ELF", 4 ))
 265     {
 266         if (header.elf.class == 2) info->flags |= BINARY_FLAG_64BIT;
 267         /* FIXME: we don't bother to check byte order, architecture, etc. */
 268         switch(header.elf.type)
 269         {
 270         case 2: info->type = BINARY_UNIX_EXE; break;
 271         case 3: info->type = BINARY_UNIX_LIB; break;
 272         }
 273     }
 274     /* Mach-o File with Endian set to Big Endian or Little Endian */
 275     else if (header.macho.magic == 0xfeedface || header.macho.magic == 0xcefaedfe)
 276     {
 277         if ((header.macho.cputype >> 24) == 1) info->flags |= BINARY_FLAG_64BIT;
 278         switch(header.macho.filetype)
 279         {
 280         case 2: info->type = BINARY_UNIX_EXE; break;
 281         case 8: info->type = BINARY_UNIX_LIB; break;
 282         }
 283     }
 284     /* Not ELF, try DOS */
 285     else if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
 286     {
 287         union
 288         {
 289             IMAGE_OS2_HEADER os2;
 290             IMAGE_NT_HEADERS32 nt;
 291         } ext_header;
 292
 293         /* We do have a DOS image so we will now try to seek into
 294          * the file by the amount indicated by the field
 295          * "Offset to extended header" and read in the
 296          * "magic" field information at that location.
 297          * This will tell us if there is more header information
 298          * to read or not.
 299          */
 300         info->type = BINARY_DOS;
 301         if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1) return;
 302         if (!ReadFile( hfile, &ext_header, sizeof(ext_header), &len, NULL ) || len < 4) return;
 303
 304         /* Reading the magic field succeeded so
 305          * we will try to determine what type it is.
 306          */
 307         if (!memcmp( &ext_header.nt.Signature, "PE\0\0", 4 ))
 308         {
 309             if (len >= sizeof(ext_header.nt.FileHeader))
 310             {
 311                 info->type = BINARY_PE;
 312                 if (ext_header.nt.FileHeader.Characteristics & IMAGE_FILE_DLL)
 313                     info->flags |= BINARY_FLAG_DLL;
 314                 if (len < sizeof(ext_header.nt))  /* clear remaining part of header if missing */
 315                     memset( (char *)&ext_header.nt + len, 0, sizeof(ext_header.nt) - len );
 316                 switch (ext_header.nt.OptionalHeader.Magic)
 317                 {
 318                 case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
 319                     info->res_start = (void *)(ULONG_PTR)ext_header.nt.OptionalHeader.ImageBase;
 320                     info->res_end = (void *)((ULONG_PTR)ext_header.nt.OptionalHeader.ImageBase +
 321                                                      ext_header.nt.OptionalHeader.SizeOfImage);
 322                     break;
 323                 case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
 324                     info->flags |= BINARY_FLAG_64BIT;
 325                     break;
 326                 }
 327             }
 328         }
 329         else if (!memcmp( &ext_header.os2.ne_magic, "NE", 2 ))
 330         {
 331             /* This is a Windows executable (NE) header.  This can
 332              * mean either a 16-bit OS/2 or a 16-bit Windows or even a
 333              * DOS program (running under a DOS extender).  To decide
 334              * which, we'll have to read the NE header.
 335              */
 336             if (len >= sizeof(ext_header.os2))
 337             {
 338                 if (ext_header.os2.ne_flags & NE_FFLAGS_LIBMODULE) info->flags |= BINARY_FLAG_DLL;
 339                 switch ( ext_header.os2.ne_exetyp )
 340                 {
 341                 case 1:  info->type = BINARY_OS216; break; /* OS/2 */
 342                 case 2:  info->type = BINARY_WIN16; break; /* Windows */
 343                 case 3:  info->type = BINARY_DOS; break; /* European MS-DOS 4.x */
 344                 case 4:  info->type = BINARY_WIN16; break; /* Windows 386; FIXME: is this 32bit??? */
 345                 case 5:  info->type = BINARY_DOS; break; /* BOSS, Borland Operating System Services */
 346                 /* other types, e.g. 0 is: "unknown" */
 347                 default: info->type = MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ext_header.os2); break;
 348                 }
 349             }
 350         }
 351     }
 352 }
 353
 354 /***********************************************************************
 355  *             GetBinaryTypeW                     [KERNEL32.@]
 356  *
 357  * Determine whether a file is executable, and if so, what kind.
 358  *
 359  * PARAMS
 360  *  lpApplicationName [I] Path of the file to check
 361  *  lpBinaryType      [O] Destination for the binary type
 362  *
 363  * RETURNS
 364  *  TRUE, if the file is an executable, in which case lpBinaryType is set.
 365  *  FALSE, if the file is not an executable or if the function fails.
 366  *
 367  * NOTES
 368  *  The type of executable is a property that determines which subsystem an
 369  *  executable file runs under. lpBinaryType can be set to one of the following
 370  *  values:
 371  *   SCS_32BIT_BINARY: A Win32 based application
 372  *   SCS_64BIT_BINARY: A Win64 based application
 373  *   SCS_DOS_BINARY: An MS-Dos based application
 374  *   SCS_WOW_BINARY: A Win16 based application
 375  *   SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
 376  *   SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
 377  *   SCS_OS216_BINARY: A 16bit OS/2 based application
 378  *
 379  *  To find the binary type, this function reads in the files header information.
 380  *  If extended header information is not present it will assume that the file
 381  *  is a DOS executable. If extended header information is present it will
 382  *  determine if the file is a 16, 32 or 64 bit Windows executable by checking the
 383  *  flags in the header.
 384  *
 385  *  ".com" and ".pif" files are only recognized by their file name extension,
 386  *  as per native Windows.
 387  */
 388 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
 389 {
 390     BOOL ret = FALSE;
 391     HANDLE hfile;
 392     struct binary_info binary_info;
 393
 394     TRACE("%s\n", debugstr_w(lpApplicationName) );
 395
 396     /* Sanity check.
 397      */
 398     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 399         return FALSE;
 400
 401     /* Open the file indicated by lpApplicationName for reading.
 402      */
 403     hfile = CreateFileW( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
 404                          NULL, OPEN_EXISTING, 0, 0 );
 405     if ( hfile == INVALID_HANDLE_VALUE )
 406         return FALSE;
 407
 408     /* Check binary type
 409      */
 410     MODULE_get_binary_info( hfile, &binary_info );
 411     switch (binary_info.type)
 412     {
 413     case BINARY_UNKNOWN:
 414     {
 415         static const WCHAR comW[] = { '.','C','O','M',0 };
 416         static const WCHAR pifW[] = { '.','P','I','F',0 };
 417         const WCHAR *ptr;
 418
 419         /* try to determine from file name */
 420         ptr = strrchrW( lpApplicationName, '.' );
 421         if (!ptr) break;
 422         if (!strcmpiW( ptr, comW ))
 423         {
 424             *lpBinaryType = SCS_DOS_BINARY;
 425             ret = TRUE;
 426         }
 427         else if (!strcmpiW( ptr, pifW ))
 428         {
 429             *lpBinaryType = SCS_PIF_BINARY;
 430             ret = TRUE;
 431         }
 432         break;
 433     }
 434     case BINARY_PE:
 435         *lpBinaryType = (binary_info.flags & BINARY_FLAG_64BIT) ? SCS_64BIT_BINARY : SCS_32BIT_BINARY;
 436         ret = TRUE;
 437         break;
 438     case BINARY_WIN16:
 439         *lpBinaryType = SCS_WOW_BINARY;
 440         ret = TRUE;
 441         break;
 442     case BINARY_OS216:
 443         *lpBinaryType = SCS_OS216_BINARY;
 444         ret = TRUE;
 445         break;
 446     case BINARY_DOS:
 447         *lpBinaryType = SCS_DOS_BINARY;
 448         ret = TRUE;
 449         break;
 450     case BINARY_UNIX_EXE:
 451     case BINARY_UNIX_LIB:
 452         ret = FALSE;
 453         break;
 454     }
 455
 456     CloseHandle( hfile );
 457     return ret;
 458 }
 459
 460 /***********************************************************************
 461  *             GetBinaryTypeA                     [KERNEL32.@]
 462  *             GetBinaryType                      [KERNEL32.@]
 463  *
 464  * See GetBinaryTypeW.
 465  */
 466 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
 467 {
 468     ANSI_STRING app_nameA;
 469     NTSTATUS status;
 470
 471     TRACE("%s\n", debugstr_a(lpApplicationName));
 472
 473     /* Sanity check.
 474      */
 475     if ( lpApplicationName == NULL || lpBinaryType == NULL )
 476         return FALSE;
 477
 478     RtlInitAnsiString(&app_nameA, lpApplicationName);
 479     status = RtlAnsiStringToUnicodeString(&NtCurrentTeb()->StaticUnicodeString,
 480                                           &app_nameA, FALSE);
 481     if (!status)
 482         return GetBinaryTypeW(NtCurrentTeb()->StaticUnicodeString.Buffer, lpBinaryType);
 483
 484     SetLastError(RtlNtStatusToDosError(status));
 485     return FALSE;
 486 }
 487
 488 /***********************************************************************
 489  *              GetModuleHandleExA         (KERNEL32.@)
 490  */
 491 BOOL WINAPI GetModuleHandleExA( DWORD flags, LPCSTR name, HMODULE *module )
 492 {
 493     WCHAR *nameW;
 494
 495     if (!name || (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS))
 496         return GetModuleHandleExW( flags, (LPCWSTR)name, module );
 497
 498     if (!(nameW = FILE_name_AtoW( name, FALSE ))) return FALSE;
 499     return GetModuleHandleExW( flags, nameW, module );
 500 }
 501
 502 /***********************************************************************
 503  *              GetModuleHandleExW         (KERNEL32.@)
 504  */
 505 BOOL WINAPI GetModuleHandleExW( DWORD flags, LPCWSTR name, HMODULE *module )
 506 {
 507     NTSTATUS status = STATUS_SUCCESS;
 508     HMODULE ret;
 509     ULONG magic;
 510
 511     if (!module)
 512     {
 513         SetLastError( ERROR_INVALID_PARAMETER );
 514         return FALSE;
 515     }
 516
 517     /* if we are messing with the refcount, grab the loader lock */
 518     if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
 519         !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
 520         LdrLockLoaderLock( 0, NULL, &magic );
 521
 522     if (!name)
 523     {
 524         ret = NtCurrentTeb()->Peb->ImageBaseAddress;
 525     }
 526     else if (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS)
 527     {
 528         void *dummy;
 529         if (!(ret = RtlPcToFileHeader( (void *)name, &dummy ))) status = STATUS_DLL_NOT_FOUND;
 530     }
 531     else
 532     {
 533         UNICODE_STRING wstr;
 534         RtlInitUnicodeString( &wstr, name );
 535         status = LdrGetDllHandle( NULL, 0, &wstr, &ret );
 536     }
 537
 538     if (status == STATUS_SUCCESS)
 539     {
 540         if (flags & GET_MODULE_HANDLE_EX_FLAG_PIN)
 541             FIXME( "should pin refcount for %p\n", ret );
 542         else if (!(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
 543             LdrAddRefDll( 0, ret );
 544     }
 545     else SetLastError( RtlNtStatusToDosError( status ) );
 546
 547     if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
 548         !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
 549         LdrUnlockLoaderLock( 0, magic );
 550
 551     *module = ret;
 552     return (status == STATUS_SUCCESS);
 553 }
 554
 555 /***********************************************************************
 556  *              GetModuleHandleA         (KERNEL32.@)
 557  *
 558  * Get the handle of a dll loaded into the process address space.
 559  *
 560  * PARAMS
 561  *  module [I] Name of the dll
 562  *
 563  * RETURNS
 564  *  Success: A handle to the loaded dll.
 565  *  Failure: A NULL handle. Use GetLastError() to determine the cause.
 566  */
 567 HMODULE WINAPI DECLSPEC_HOTPATCH GetModuleHandleA(LPCSTR module)
 568 {
 569     HMODULE ret;
 570
 571     if (!GetModuleHandleExA( GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, module, &ret )) ret = 0;
 572     return ret;
 573 }
 574
 575 /***********************************************************************
 576  *              GetModuleHandleW (KERNEL32.@)
 577  *
 578  * Unicode version of GetModuleHandleA.
 579  */
 580 HMODULE WINAPI GetModuleHandleW(LPCWSTR module)
 581 {
 582     HMODULE ret;
 583
 584     if (!GetModuleHandleExW( GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, module, &ret )) ret = 0;
 585     return ret;
 586 }
 587
 588
 589 /***********************************************************************
 590  *              GetModuleFileNameA      (KERNEL32.@)
 591  *
 592  * Get the file name of a loaded module from its handle.
 593  *
 594  * RETURNS
 595  *  Success: The length of the file name, excluding the terminating NUL.
 596  *  Failure: 0. Use GetLastError() to determine the cause.
 597  *
 598  * NOTES
 599  *  This function always returns the long path of hModule
 600  *  The function doesn't write a terminating '\0' if the buffer is too
 601  *  small.
 602  */
 603 DWORD WINAPI GetModuleFileNameA(
 604         HMODULE hModule,        /* [in] Module handle (32 bit) */
 605         LPSTR lpFileName,       /* [out] Destination for file name */
 606         DWORD size )            /* [in] Size of lpFileName in characters */
 607 {
 608     LPWSTR filenameW = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) );
 609     DWORD len;
 610
 611     if (!filenameW)
 612     {
 613         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 614         return 0;
 615     }
 616     if ((len = GetModuleFileNameW( hModule, filenameW, size )))
 617     {
 618         len = FILE_name_WtoA( filenameW, len, lpFileName, size );
 619         if (len < size)
 620             lpFileName[len] = '\0';
 621         else
 622             SetLastError( ERROR_INSUFFICIENT_BUFFER );
 623     }
 624     HeapFree( GetProcessHeap(), 0, filenameW );
 625     return len;
 626 }
 627
 628 /***********************************************************************
 629  *              GetModuleFileNameW      (KERNEL32.@)
 630  *
 631  * Unicode version of GetModuleFileNameA.
 632  */
 633 DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size )
 634 {
 635     ULONG magic, len = 0;
 636     LDR_MODULE *pldr;
 637     NTSTATUS nts;
 638     WIN16_SUBSYSTEM_TIB *win16_tib;
 639
 640     if (!hModule && ((win16_tib = NtCurrentTeb()->Tib.SubSystemTib)) && win16_tib->exe_name)
 641     {
 642         len = min(size, win16_tib->exe_name->Length / sizeof(WCHAR));
 643         memcpy( lpFileName, win16_tib->exe_name->Buffer, len * sizeof(WCHAR) );
 644         if (len < size) lpFileName[len] = '\0';
 645         goto done;
 646     }
 647
 648     LdrLockLoaderLock( 0, NULL, &magic );
 649
 650     if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
 651     nts = LdrFindEntryForAddress( hModule, &pldr );
 652     if (nts == STATUS_SUCCESS)
 653     {
 654         len = min(size, pldr->FullDllName.Length / sizeof(WCHAR));
 655         memcpy(lpFileName, pldr->FullDllName.Buffer, len * sizeof(WCHAR));
 656         if (len < size)
 657         {
 658             lpFileName[len] = '\0';
 659             SetLastError( 0 );
 660         }
 661         else
 662             SetLastError( ERROR_INSUFFICIENT_BUFFER );
 663     }
 664     else SetLastError( RtlNtStatusToDosError( nts ) );
 665
 666     LdrUnlockLoaderLock( 0, magic );
 667 done:
 668     TRACE( "%s\n", debugstr_wn(lpFileName, len) );
 669     return len;
 670 }
 671
 672
 673 /***********************************************************************
 674  *           get_dll_system_path
 675  */
 676 static const WCHAR *get_dll_system_path(void)
 677 {
 678     static WCHAR *cached_path;
 679
 680     if (!cached_path)
 681     {
 682         WCHAR *p, *path;
 683         int len = 3;
 684
 685         len += 2 * GetSystemDirectoryW( NULL, 0 );
 686         len += GetWindowsDirectoryW( NULL, 0 );
 687         p = path = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 688         *p++ = '.';
 689         *p++ = ';';
 690         GetSystemDirectoryW( p, path + len - p);
 691         p += strlenW(p);
 692         /* if system directory ends in "32" add 16-bit version too */
 693         if (p[-2] == '3' && p[-1] == '2')
 694         {
 695             *p++ = ';';
 696             GetSystemDirectoryW( p, path + len - p);
 697             p += strlenW(p) - 2;
 698         }
 699         *p++ = ';';
 700         GetWindowsDirectoryW( p, path + len - p);
 701         cached_path = path;
 702     }
 703     return cached_path;
 704 }
 705
 706 /******************************************************************
 707  *              get_module_path_end
 708  *
 709  * Returns the end of the directory component of the module path.
 710  */
 711 static inline const WCHAR *get_module_path_end(const WCHAR *module)
 712 {
 713     const WCHAR *p;
 714     const WCHAR *mod_end = module;
 715     if (!module) return mod_end;
 716
 717     if ((p = strrchrW( mod_end, '\\' ))) mod_end = p;
 718     if ((p = strrchrW( mod_end, '/' ))) mod_end = p;
 719     if (mod_end == module + 2 && module[1] == ':') mod_end++;
 720     if (mod_end == module && module[0] && module[1] == ':') mod_end += 2;
 721
 722     return mod_end;
 723 }
 724
 725 /******************************************************************
 726  *              MODULE_get_dll_load_path
 727  *
 728  * Compute the load path to use for a given dll.
 729  * Returned pointer must be freed by caller.
 730  */
 731 WCHAR *MODULE_get_dll_load_path( LPCWSTR module )
 732 {
 733     static const WCHAR pathW[] = {'P','A','T','H',0};
 734
 735     const WCHAR *system_path = get_dll_system_path();
 736     const WCHAR *mod_end = NULL;
 737     UNICODE_STRING name, value;
 738     WCHAR *p, *ret;
 739     int len = 0, path_len = 0;
 740
 741     /* adjust length for module name */
 742
 743     if (module)
 744         mod_end = get_module_path_end( module );
 745     /* if module is NULL or doesn't contain a path, fall back to directory
 746      * process was loaded from */
 747     if (module == mod_end)
 748     {
 749         module = NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer;
 750         mod_end = get_module_path_end( module );
 751     }
 752     len += (mod_end - module) + 1;
 753
 754     len += strlenW( system_path ) + 2;
 755
 756     /* get the PATH variable */
 757
 758     RtlInitUnicodeString( &name, pathW );
 759     value.Length = 0;
 760     value.MaximumLength = 0;
 761     value.Buffer = NULL;
 762     if (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
 763         path_len = value.Length;
 764
 765     RtlEnterCriticalSection( &dlldir_section );
 766     if (dll_directory) len += strlenW(dll_directory) + 1;
 767     if ((p = ret = HeapAlloc( GetProcessHeap(), 0, path_len + len * sizeof(WCHAR) )))
 768     {
 769         if (module)
 770         {
 771             memcpy( ret, module, (mod_end - module) * sizeof(WCHAR) );
 772             p += (mod_end - module);
 773             *p++ = ';';
 774         }
 775         if (dll_directory)
 776         {
 777             strcpyW( p, dll_directory );
 778             p += strlenW(p);
 779             *p++ = ';';
 780         }
 781     }
 782     RtlLeaveCriticalSection( &dlldir_section );
 783     if (!ret) return NULL;
 784
 785     strcpyW( p, system_path );
 786     p += strlenW(p);
 787     *p++ = ';';
 788     value.Buffer = p;
 789     value.MaximumLength = path_len;
 790
 791     while (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
 792     {
 793         WCHAR *new_ptr;
 794
 795         /* grow the buffer and retry */
 796         path_len = value.Length;
 797         if (!(new_ptr = HeapReAlloc( GetProcessHeap(), 0, ret, path_len + len * sizeof(WCHAR) )))
 798         {
 799             HeapFree( GetProcessHeap(), 0, ret );
 800             return NULL;
 801         }
 802         value.Buffer = new_ptr + (value.Buffer - ret);
 803         value.MaximumLength = path_len;
 804         ret = new_ptr;
 805     }
 806     value.Buffer[value.Length / sizeof(WCHAR)] = 0;
 807     return ret;
 808 }
 809
 810
 811 /******************************************************************
 812  *              load_library_as_datafile
 813  */
 814 static BOOL load_library_as_datafile( LPCWSTR name, HMODULE* hmod)
 815 {
 816     static const WCHAR dotDLL[] = {'.','d','l','l',0};
 817
 818     WCHAR filenameW[MAX_PATH];
 819     HANDLE hFile = INVALID_HANDLE_VALUE;
 820     HANDLE mapping;
 821     HMODULE module;
 822
 823     *hmod = 0;
 824
 825     if (SearchPathW( NULL, name, dotDLL, sizeof(filenameW) / sizeof(filenameW[0]),
 826                      filenameW, NULL ))
 827     {
 828         hFile = CreateFileW( filenameW, GENERIC_READ, FILE_SHARE_READ,
 829                              NULL, OPEN_EXISTING, 0, 0 );
 830     }
 831     if (hFile == INVALID_HANDLE_VALUE) return FALSE;
 832
 833     mapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
 834     CloseHandle( hFile );
 835     if (!mapping) return FALSE;
 836
 837     module = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
 838     CloseHandle( mapping );
 839     if (!module) return FALSE;
 840
 841     /* make sure it's a valid PE file */
 842     if (!RtlImageNtHeader(module))
 843     {
 844         UnmapViewOfFile( module );
 845         return FALSE;
 846     }
 847     *hmod = (HMODULE)((char *)module + 1);  /* set low bit of handle to indicate datafile module */
 848     return TRUE;
 849 }
 850
 851
 852 /******************************************************************
 853  *              load_library
 854  *
 855  * Helper for LoadLibraryExA/W.
 856  */
 857 static HMODULE load_library( const UNICODE_STRING *libname, DWORD flags )
 858 {
 859     NTSTATUS nts;
 860     HMODULE hModule;
 861     WCHAR *load_path;
 862     static const DWORD unsupported_flags =
 863         LOAD_IGNORE_CODE_AUTHZ_LEVEL |
 864         LOAD_LIBRARY_AS_IMAGE_RESOURCE |
 865         LOAD_LIBRARY_AS_DATAFILE_EXCLUSIVE |
 866         LOAD_LIBRARY_REQUIRE_SIGNED_TARGET;
 867
 868     if( flags & unsupported_flags)
 869         FIXME("unsupported flag(s) used (flags: 0x%08x)\n", flags);
 870
 871     load_path = MODULE_get_dll_load_path( flags & LOAD_WITH_ALTERED_SEARCH_PATH ? libname->Buffer : NULL );
 872
 873     if (flags & LOAD_LIBRARY_AS_DATAFILE)
 874     {
 875         ULONG magic;
 876
 877         LdrLockLoaderLock( 0, NULL, &magic );
 878         if (!LdrGetDllHandle( load_path, flags, libname, &hModule ))
 879         {
 880             LdrAddRefDll( 0, hModule );
 881             LdrUnlockLoaderLock( 0, magic );
 882             goto done;
 883         }
 884         LdrUnlockLoaderLock( 0, magic );
 885
 886         /* The method in load_library_as_datafile allows searching for the
 887          * 'native' libraries only
 888          */
 889         if (load_library_as_datafile( libname->Buffer, &hModule )) goto done;
 890         flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
 891         /* Fallback to normal behaviour */
 892     }
 893
 894     nts = LdrLoadDll( load_path, flags, libname, &hModule );
 895     if (nts != STATUS_SUCCESS)
 896     {
 897         hModule = 0;
 898         SetLastError( RtlNtStatusToDosError( nts ) );
 899     }
 900 done:
 901     HeapFree( GetProcessHeap(), 0, load_path );
 902     return hModule;
 903 }
 904
 905
 906 /******************************************************************
 907  *              LoadLibraryExA          (KERNEL32.@)
 908  *
 909  * Load a dll file into the process address space.
 910  *
 911  * PARAMS
 912  *  libname [I] Name of the file to load
 913  *  hfile   [I] Reserved, must be 0.
 914  *  flags   [I] Flags for loading the dll
 915  *
 916  * RETURNS
 917  *  Success: A handle to the loaded dll.
 918  *  Failure: A NULL handle. Use GetLastError() to determine the cause.
 919  *
 920  * NOTES
 921  * The HFILE parameter is not used and marked reserved in the SDK. I can
 922  * only guess that it should force a file to be mapped, but I rather
 923  * ignore the parameter because it would be extremely difficult to
 924  * integrate this with different types of module representations.
 925  */
 926 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
 927 {
 928     WCHAR *libnameW;
 929
 930     if (!(libnameW = FILE_name_AtoW( libname, FALSE ))) return 0;
 931     return LoadLibraryExW( libnameW, hfile, flags );
 932 }
 933
 934 /***********************************************************************
 935  *           LoadLibraryExW       (KERNEL32.@)
 936  *
 937  * Unicode version of LoadLibraryExA.
 938  */
 939 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryExW(LPCWSTR libnameW, HANDLE hfile, DWORD flags)
 940 {
 941     UNICODE_STRING      wstr;
 942     HMODULE             res;
 943
 944     if (!libnameW)
 945     {
 946         SetLastError(ERROR_INVALID_PARAMETER);
 947         return 0;
 948     }
 949     RtlInitUnicodeString( &wstr, libnameW );
 950     if (wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] != ' ')
 951         return load_library( &wstr, flags );
 952
 953     /* Library name has trailing spaces */
 954     RtlCreateUnicodeString( &wstr, libnameW );
 955     while (wstr.Length > sizeof(WCHAR) &&
 956            wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] == ' ')
 957     {
 958         wstr.Length -= sizeof(WCHAR);
 959     }
 960     wstr.Buffer[wstr.Length/sizeof(WCHAR)] = '\0';
 961     res = load_library( &wstr, flags );
 962     RtlFreeUnicodeString( &wstr );
 963     return res;
 964 }
 965
 966 /***********************************************************************
 967  *           LoadLibraryA         (KERNEL32.@)
 968  *
 969  * Load a dll file into the process address space.
 970  *
 971  * PARAMS
 972  *  libname [I] Name of the file to load
 973  *
 974  * RETURNS
 975  *  Success: A handle to the loaded dll.
 976  *  Failure: A NULL handle. Use GetLastError() to determine the cause.
 977  *
 978  * NOTES
 979  * See LoadLibraryExA().
 980  */
 981 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryA(LPCSTR libname)
 982 {
 983     return LoadLibraryExA(libname, 0, 0);
 984 }
 985
 986 /***********************************************************************
 987  *           LoadLibraryW         (KERNEL32.@)
 988  *
 989  * Unicode version of LoadLibraryA.
 990  */
 991 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryW(LPCWSTR libnameW)
 992 {
 993     return LoadLibraryExW(libnameW, 0, 0);
 994 }
 995
 996 /***********************************************************************
 997  *           FreeLibrary   (KERNEL32.@)
 998  *
 999  * Free a dll loaded into the process address space.
1000  *
1001  * PARAMS
1002  *  hLibModule [I] Handle to the dll returned by LoadLibraryA().
1003  *
1004  * RETURNS
1005  *  Success: TRUE. The dll is removed if it is not still in use.
1006  *  Failure: FALSE. Use GetLastError() to determine the cause.
1007  */
1008 BOOL WINAPI DECLSPEC_HOTPATCH FreeLibrary(HINSTANCE hLibModule)
1009 {
1010     BOOL                retv = FALSE;
1011     NTSTATUS            nts;
1012
1013     if (!hLibModule)
1014     {
1015         SetLastError( ERROR_INVALID_HANDLE );
1016         return FALSE;
1017     }
1018
1019     if ((ULONG_PTR)hLibModule & 1)
1020     {
1021         /* this is a LOAD_LIBRARY_AS_DATAFILE module */
1022         char *ptr = (char *)hLibModule - 1;
1023         return UnmapViewOfFile( ptr );
1024     }
1025
1026     if ((nts = LdrUnloadDll( hLibModule )) == STATUS_SUCCESS) retv = TRUE;
1027     else SetLastError( RtlNtStatusToDosError( nts ) );
1028
1029     return retv;
1030 }
1031
1032 /***********************************************************************
1033  *           GetProcAddress             (KERNEL32.@)
1034  *
1035  * Find the address of an exported symbol in a loaded dll.
1036  *
1037  * PARAMS
1038  *  hModule  [I] Handle to the dll returned by LoadLibraryA().
1039  *  function [I] Name of the symbol, or an integer ordinal number < 16384
1040  *
1041  * RETURNS
1042  *  Success: A pointer to the symbol in the process address space.
1043  *  Failure: NULL. Use GetLastError() to determine the cause.
1044  */
1045 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
1046 {
1047     NTSTATUS    nts;
1048     FARPROC     fp;
1049
1050     if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
1051
1052     if ((ULONG_PTR)function >> 16)
1053     {
1054         ANSI_STRING     str;
1055
1056         RtlInitAnsiString( &str, function );
1057         nts = LdrGetProcedureAddress( hModule, &str, 0, (void**)&fp );
1058     }
1059     else
1060         nts = LdrGetProcedureAddress( hModule, NULL, LOWORD(function), (void**)&fp );
1061     if (nts != STATUS_SUCCESS)
1062     {
1063         SetLastError( RtlNtStatusToDosError( nts ) );
1064         fp = NULL;
1065     }
1066     return fp;
1067 }
1068
1069 /***********************************************************************
1070  *           DelayLoadFailureHook  (KERNEL32.@)
1071  */
1072 FARPROC WINAPI DelayLoadFailureHook( LPCSTR name, LPCSTR function )
1073 {
1074     ULONG_PTR args[2];
1075
1076     if ((ULONG_PTR)function >> 16)
1077         ERR( "failed to delay load %s.%s\n", name, function );
1078     else
1079         ERR( "failed to delay load %s.%u\n", name, LOWORD(function) );
1080     args[0] = (ULONG_PTR)name;
1081     args[1] = (ULONG_PTR)function;
1082     RaiseException( EXCEPTION_WINE_STUB, EH_NONCONTINUABLE, 2, args );
1083     return NULL;
1084 }
1085
1086 typedef struct {
1087     HANDLE process;
1088     PLIST_ENTRY head, current;
1089     LDR_MODULE ldr_module;
1090 } MODULE_ITERATOR;
1091
1092 static BOOL init_module_iterator(MODULE_ITERATOR *iter, HANDLE process)
1093 {
1094     PROCESS_BASIC_INFORMATION pbi;
1095     PPEB_LDR_DATA ldr_data;
1096     NTSTATUS status;
1097
1098     /* Get address of PEB */
1099     status = NtQueryInformationProcess(process, ProcessBasicInformation,
1100                                        &pbi, sizeof(pbi), NULL);
1101     if (status != STATUS_SUCCESS)
1102     {
1103         SetLastError(RtlNtStatusToDosError(status));
1104         return FALSE;
1105     }
1106
1107     /* Read address of LdrData from PEB */
1108     if (!ReadProcessMemory(process, &pbi.PebBaseAddress->LdrData,
1109                            &ldr_data, sizeof(ldr_data), NULL))
1110         return FALSE;
1111
1112     /* Read address of first module from LdrData */
1113     if (!ReadProcessMemory(process,
1114                            &ldr_data->InLoadOrderModuleList.Flink,
1115                            &iter->current, sizeof(iter->current), NULL))
1116         return FALSE;
1117
1118     iter->head = &ldr_data->InLoadOrderModuleList;
1119     iter->process = process;
1120
1121     return TRUE;
1122 }
1123
1124 static int module_iterator_next(MODULE_ITERATOR *iter)
1125 {
1126     if (iter->current == iter->head)
1127         return 0;
1128
1129     if (!ReadProcessMemory(iter->process,
1130                            CONTAINING_RECORD(iter->current, LDR_MODULE, InLoadOrderModuleList),
1131                            &iter->ldr_module, sizeof(iter->ldr_module), NULL))
1132          return -1;
1133
1134     iter->current = iter->ldr_module.InLoadOrderModuleList.Flink;
1135     return 1;
1136 }
1137
1138 static BOOL get_ldr_module(HANDLE process, HMODULE module, LDR_MODULE *ldr_module)
1139 {
1140     MODULE_ITERATOR iter;
1141     INT ret;
1142
1143     if (!init_module_iterator(&iter, process))
1144         return FALSE;
1145
1146     while ((ret = module_iterator_next(&iter)) > 0)
1147         /* When hModule is NULL we return the process image - which will be
1148          * the first module since our iterator uses InLoadOrderModuleList */
1149         if (!module || module == iter.ldr_module.BaseAddress)
1150         {
1151             *ldr_module = iter.ldr_module;
1152             return TRUE;
1153         }
1154
1155     if (ret == 0)
1156         SetLastError(ERROR_INVALID_HANDLE);
1157
1158     return FALSE;
1159 }
1160
1161 /***********************************************************************
1162  *           K32EnumProcessModules (KERNEL32.@)
1163  *
1164  * NOTES
1165  *  Returned list is in load order.
1166  */
1167 BOOL WINAPI K32EnumProcessModules(HANDLE process, HMODULE *lphModule,
1168                                   DWORD cb, DWORD *needed)
1169 {
1170     MODULE_ITERATOR iter;
1171     INT ret;
1172
1173     if (!init_module_iterator(&iter, process))
1174         return FALSE;
1175
1176     *needed = 0;
1177
1178     while ((ret = module_iterator_next(&iter)) > 0)
1179     {
1180         if (cb >= sizeof(HMODULE))
1181         {
1182             *lphModule++ = iter.ldr_module.BaseAddress;
1183             cb -= sizeof(HMODULE);
1184         }
1185         *needed += sizeof(HMODULE);
1186     }
1187
1188     return ret == 0;
1189 }
1190
1191 /***********************************************************************
1192  *           K32GetModuleBaseNameW (KERNEL32.@)
1193  */
1194 DWORD WINAPI K32GetModuleBaseNameW(HANDLE process, HMODULE module,
1195                                    LPWSTR base_name, DWORD size)
1196 {
1197     LDR_MODULE ldr_module;
1198
1199     if (!get_ldr_module(process, module, &ldr_module))
1200         return 0;
1201
1202     size = min(ldr_module.BaseDllName.Length / sizeof(WCHAR), size);
1203     if (!ReadProcessMemory(process, ldr_module.BaseDllName.Buffer,
1204                            base_name, size * sizeof(WCHAR), NULL))
1205         return 0;
1206
1207     base_name[size] = 0;
1208     return size;
1209 }
1210
1211 /***********************************************************************
1212  *           K32GetModuleBaseNameA (KERNEL32.@)
1213  */
1214 DWORD WINAPI K32GetModuleBaseNameA(HANDLE process, HMODULE module,
1215                                    LPSTR base_name, DWORD size)
1216 {
1217     WCHAR *base_name_w;
1218     DWORD len, ret = 0;
1219
1220     if(!base_name || !size) {
1221         SetLastError(ERROR_INVALID_PARAMETER);
1222         return 0;
1223     }
1224
1225     base_name_w = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * size);
1226     if(!base_name_w)
1227         return 0;
1228
1229     len = K32GetModuleBaseNameW(process, module, base_name_w, size);
1230     TRACE("%d, %s\n", len, debugstr_w(base_name_w));
1231     if (len)
1232     {
1233         ret = WideCharToMultiByte(CP_ACP, 0, base_name_w, len,
1234                                   base_name, size, NULL, NULL);
1235         if (ret < size) base_name[ret] = 0;
1236     }
1237     HeapFree(GetProcessHeap(), 0, base_name_w);
1238     return ret;
1239 }
1240
1241 /***********************************************************************
1242  *           K32GetModuleFileNameExW (KERNEL32.@)
1243  */
1244 DWORD WINAPI K32GetModuleFileNameExW(HANDLE process, HMODULE module,
1245                                      LPWSTR file_name, DWORD size)
1246 {
1247     LDR_MODULE ldr_module;
1248
1249     if(!get_ldr_module(process, module, &ldr_module))
1250         return 0;
1251
1252     size = min(ldr_module.FullDllName.Length / sizeof(WCHAR), size);
1253     if (!ReadProcessMemory(process, ldr_module.FullDllName.Buffer,
1254                            file_name, size * sizeof(WCHAR), NULL))
1255         return 0;
1256
1257     file_name[size] = 0;
1258     return size;
1259 }
1260
1261 /***********************************************************************
1262  *           K32GetModuleFileNameExA (KERNEL32.@)
1263  */
1264 DWORD WINAPI K32GetModuleFileNameExA(HANDLE process, HMODULE module,
1265                                      LPSTR file_name, DWORD size)
1266 {
1267     WCHAR *ptr;
1268
1269     TRACE("(hProcess=%p, hModule=%p, %p, %d)\n", process, module, file_name, size);
1270
1271     if (!file_name || !size) return 0;
1272
1273     if ( process == GetCurrentProcess() )
1274     {
1275         DWORD len = GetModuleFileNameA( module, file_name, size );
1276         if (size) file_name[size - 1] = '\0';
1277         return len;
1278     }
1279
1280     if (!(ptr = HeapAlloc(GetProcessHeap(), 0, size * sizeof(WCHAR)))) return 0;
1281
1282     if (!K32GetModuleFileNameExW(process, module, ptr, size))
1283     {
1284         file_name[0] = '\0';
1285     }
1286     else
1287     {
1288         if (!WideCharToMultiByte( CP_ACP, 0, ptr, -1, file_name, size, NULL, NULL ))
1289             file_name[size - 1] = 0;
1290     }
1291
1292     HeapFree(GetProcessHeap(), 0, ptr);
1293     return strlen(file_name);
1294 }
1295
1296 /***********************************************************************
1297  *           K32GetModuleInformation (KERNEL32.@)
1298  */
1299 BOOL WINAPI K32GetModuleInformation(HANDLE process, HMODULE module,
1300                                     MODULEINFO *modinfo, DWORD cb)
1301 {
1302     LDR_MODULE ldr_module;
1303
1304     if (cb < sizeof(MODULEINFO))
1305     {
1306         SetLastError(ERROR_INSUFFICIENT_BUFFER);
1307         return FALSE;
1308     }
1309
1310     if (!get_ldr_module(process, module, &ldr_module))
1311         return FALSE;
1312
1313     modinfo->lpBaseOfDll = ldr_module.BaseAddress;
1314     modinfo->SizeOfImage = ldr_module.SizeOfImage;
1315     modinfo->EntryPoint  = ldr_module.EntryPoint;
1316     return TRUE;
1317 }
1318
1319 #ifdef __i386__
1320
1321 /***********************************************************************
1322  *           __wine_dll_register_16 (KERNEL32.@)
1323  *
1324  * No longer used.
1325  */
1326 void __wine_dll_register_16( const IMAGE_DOS_HEADER *header, const char *file_name )
1327 {
1328     ERR( "loading old style 16-bit dll %s no longer supported\n", file_name );
1329 }
1330
1331
1332 /***********************************************************************
1333  *           __wine_dll_unregister_16 (KERNEL32.@)
1334  *
1335  * No longer used.
1336  */
1337 void __wine_dll_unregister_16( const IMAGE_DOS_HEADER *header )
1338 {
1339 }
1340
1341 #endif