4 * Copyright 1995 Alexandre Julliard
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.
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.
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
22 #include "wine/port.h"
28 #include <sys/types.h>
32 #include "wine/winbase16.h"
40 #include "kernel_private.h"
42 #include "wine/debug.h"
43 #include "wine/unicode.h"
44 #include "wine/server.h"
46 WINE_DEFAULT_DEBUG_CHANNEL(module);
47 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
50 static WCHAR *dll_directory; /* extra path for SetDllDirectoryW */
52 static CRITICAL_SECTION dlldir_section;
53 static CRITICAL_SECTION_DEBUG critsect_debug =
55 0, 0, &dlldir_section,
56 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
57 0, 0, { 0, (DWORD)(__FILE__ ": dlldir_section") }
59 static CRITICAL_SECTION dlldir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
62 /****************************************************************************
63 * GetDllDirectoryA (KERNEL32.@)
65 DWORD WINAPI GetDllDirectoryA( DWORD buf_len, LPSTR buffer )
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)
73 if (dll_directory) FILE_name_WtoA( dll_directory, -1, buffer, buf_len );
78 len++; /* for terminating null */
79 if (buffer) *buffer = 0;
81 RtlLeaveCriticalSection( &dlldir_section );
86 /****************************************************************************
87 * GetDllDirectoryW (KERNEL32.@)
89 DWORD WINAPI GetDllDirectoryW( DWORD buf_len, LPWSTR buffer )
93 RtlEnterCriticalSection( &dlldir_section );
94 len = dll_directory ? strlenW( dll_directory ) : 0;
95 if (buffer && buf_len > len)
97 if (dll_directory) memcpy( buffer, dll_directory, (len + 1) * sizeof(WCHAR) );
102 len++; /* for terminating null */
103 if (buffer) *buffer = 0;
105 RtlLeaveCriticalSection( &dlldir_section );
110 /****************************************************************************
111 * SetDllDirectoryA (KERNEL32.@)
113 BOOL WINAPI SetDllDirectoryA( LPCSTR dir )
118 if (!(dirW = FILE_name_AtoW( dir, TRUE ))) return FALSE;
119 ret = SetDllDirectoryW( dirW );
120 HeapFree( GetProcessHeap(), 0, dirW );
125 /****************************************************************************
126 * SetDllDirectoryW (KERNEL32.@)
128 BOOL WINAPI SetDllDirectoryW( LPCWSTR dir )
130 WCHAR *newdir = NULL;
134 DWORD len = (strlenW(dir) + 1) * sizeof(WCHAR);
135 if (!(newdir = HeapAlloc( GetProcessHeap(), 0, len )))
137 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
140 memcpy( newdir, dir, len );
143 RtlEnterCriticalSection( &dlldir_section );
144 HeapFree( GetProcessHeap(), 0, dll_directory );
145 dll_directory = newdir;
146 RtlLeaveCriticalSection( &dlldir_section );
151 /****************************************************************************
152 * DisableThreadLibraryCalls (KERNEL32.@)
154 * Inform the module loader that thread notifications are not required for a dll.
157 * hModule [I] Module handle to skip calls for
160 * Success: TRUE. Thread attach and detach notifications will not be sent
162 * Failure: FALSE. Use GetLastError() to determine the cause.
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.
168 BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
170 NTSTATUS nts = LdrDisableThreadCalloutsForDll( hModule );
171 if (nts == STATUS_SUCCESS) return TRUE;
173 SetLastError( RtlNtStatusToDosError( nts ) );
178 /* Check whether a file is an OS/2 or a very old Windows executable
179 * by testing on import of KERNEL.
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...
184 static enum binary_type MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz,
185 const IMAGE_OS2_HEADER *ne)
187 DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
188 enum binary_type ret = BINARY_OS216;
189 LPWORD modtab = NULL;
190 LPSTR nametab = NULL;
194 /* read modref table */
195 if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
196 || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
197 || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
198 || (len != ne->ne_cmod*sizeof(WORD)) )
201 /* read imported names table */
202 if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
203 || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
204 || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
205 || (len != ne->ne_enttab - ne->ne_imptab) )
208 for (i=0; i < ne->ne_cmod; i++)
210 LPSTR module = &nametab[modtab[i]];
211 TRACE("modref: %.*s\n", module[0], &module[1]);
212 if (!(strncmp(&module[1], "KERNEL", module[0])))
213 { /* very old Windows file */
214 MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
221 ERR("Hmm, an error occurred. Is this binary file broken?\n");
224 HeapFree( GetProcessHeap(), 0, modtab);
225 HeapFree( GetProcessHeap(), 0, nametab);
226 SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
230 /***********************************************************************
231 * MODULE_GetBinaryType
233 enum binary_type MODULE_GetBinaryType( HANDLE hfile, void **res_start, void **res_end )
239 unsigned char magic[4];
240 unsigned char ignored[12];
246 unsigned long cputype;
247 unsigned long cpusubtype;
248 unsigned long filetype;
255 /* Seek to the start of the file and read the header information. */
256 if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1)
257 return BINARY_UNKNOWN;
258 if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header))
259 return BINARY_UNKNOWN;
261 if (!memcmp( header.elf.magic, "\177ELF", 4 ))
263 /* FIXME: we don't bother to check byte order, architecture, etc. */
264 switch(header.elf.type)
266 case 2: return BINARY_UNIX_EXE;
267 case 3: return BINARY_UNIX_LIB;
269 return BINARY_UNKNOWN;
272 /* Mach-o File with Endian set to Big Endian or Little Endian */
273 if (header.macho.magic == 0xfeedface || header.macho.magic == 0xecafdeef)
275 switch(header.macho.filetype)
277 case 0x8: /* MH_BUNDLE */ return BINARY_UNIX_LIB;
279 return BINARY_UNKNOWN;
282 /* Not ELF, try DOS */
284 if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
288 IMAGE_OS2_HEADER os2;
292 /* We do have a DOS image so we will now try to seek into
293 * the file by the amount indicated by the field
294 * "Offset to extended header" and read in the
295 * "magic" field information at that location.
296 * This will tell us if there is more header information
299 if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1)
301 if (!ReadFile( hfile, &ext_header, sizeof(ext_header), &len, NULL ) || len < 4)
304 /* Reading the magic field succeeded so
305 * we will try to determine what type it is.
307 if (!memcmp( &ext_header.nt.Signature, "PE\0\0", 4 ))
309 if (len >= sizeof(ext_header.nt.FileHeader))
311 if (len < sizeof(ext_header.nt)) /* clear remaining part of header if missing */
312 memset( (char *)&ext_header.nt + len, 0, sizeof(ext_header.nt) - len );
313 if (res_start) *res_start = (void *)ext_header.nt.OptionalHeader.ImageBase;
314 if (res_end) *res_end = (void *)(ext_header.nt.OptionalHeader.ImageBase +
315 ext_header.nt.OptionalHeader.SizeOfImage);
316 if (ext_header.nt.FileHeader.Characteristics & IMAGE_FILE_DLL) return BINARY_PE_DLL;
317 return BINARY_PE_EXE;
322 if (!memcmp( &ext_header.os2.ne_magic, "NE", 2 ))
324 /* This is a Windows executable (NE) header. This can
325 * mean either a 16-bit OS/2 or a 16-bit Windows or even a
326 * DOS program (running under a DOS extender). To decide
327 * which, we'll have to read the NE header.
329 if (len >= sizeof(ext_header.os2))
331 switch ( ext_header.os2.ne_exetyp )
333 case 1: return BINARY_OS216; /* OS/2 */
334 case 2: return BINARY_WIN16; /* Windows */
335 case 3: return BINARY_DOS; /* European MS-DOS 4.x */
336 case 4: return BINARY_WIN16; /* Windows 386; FIXME: is this 32bit??? */
337 case 5: return BINARY_DOS; /* BOSS, Borland Operating System Services */
338 /* other types, e.g. 0 is: "unknown" */
339 default: return MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ext_header.os2);
342 /* Couldn't read header, so abort. */
346 /* Unknown extended header, but this file is nonetheless DOS-executable. */
350 return BINARY_UNKNOWN;
353 /***********************************************************************
354 * GetBinaryTypeW [KERNEL32.@]
356 * Determine whether a file is executable, and if so, what kind.
359 * lpApplicationName [I] Path of the file to check
360 * lpBinaryType [O] Destination for the binary type
363 * TRUE, if the file is an executable, in which case lpBinaryType is set.
364 * FALSE, if the file is not an executable or if the function fails.
367 * The type of executable is a property that determines which subsytem an
368 * executable file runs under. lpBinaryType can be set to one of the following
370 * SCS_32BIT_BINARY: A Win32 based application
371 * SCS_DOS_BINARY: An MS-Dos based application
372 * SCS_WOW_BINARY: A Win16 based application
373 * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
374 * SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
375 * SCS_OS216_BINARY: A 16bit OS/2 based application
377 * To find the binary type, this function reads in the files header information.
378 * If extended header information is not present it will assume that the file
379 * is a DOS executable. If extended header information is present it will
380 * determine if the file is a 16 or 32 bit Windows executable by checking the
381 * flags in the header.
383 * ".com" and ".pif" files are only recognized by their file name extension,
384 * as per native Windows.
386 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
391 TRACE("%s\n", debugstr_w(lpApplicationName) );
395 if ( lpApplicationName == NULL || lpBinaryType == NULL )
398 /* Open the file indicated by lpApplicationName for reading.
400 hfile = CreateFileW( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
401 NULL, OPEN_EXISTING, 0, 0 );
402 if ( hfile == INVALID_HANDLE_VALUE )
407 switch(MODULE_GetBinaryType( hfile, NULL, NULL ))
411 static const WCHAR comW[] = { '.','C','O','M',0 };
412 static const WCHAR pifW[] = { '.','P','I','F',0 };
415 /* try to determine from file name */
416 ptr = strrchrW( lpApplicationName, '.' );
418 if (!strcmpiW( ptr, comW ))
420 *lpBinaryType = SCS_DOS_BINARY;
423 else if (!strcmpiW( ptr, pifW ))
425 *lpBinaryType = SCS_PIF_BINARY;
432 *lpBinaryType = SCS_32BIT_BINARY;
436 *lpBinaryType = SCS_WOW_BINARY;
440 *lpBinaryType = SCS_OS216_BINARY;
444 *lpBinaryType = SCS_DOS_BINARY;
447 case BINARY_UNIX_EXE:
448 case BINARY_UNIX_LIB:
453 CloseHandle( hfile );
457 /***********************************************************************
458 * GetBinaryTypeA [KERNEL32.@]
459 * GetBinaryType [KERNEL32.@]
461 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
463 ANSI_STRING app_nameA;
466 TRACE("%s\n", debugstr_a(lpApplicationName));
470 if ( lpApplicationName == NULL || lpBinaryType == NULL )
473 RtlInitAnsiString(&app_nameA, lpApplicationName);
474 status = RtlAnsiStringToUnicodeString(&NtCurrentTeb()->StaticUnicodeString,
477 return GetBinaryTypeW(NtCurrentTeb()->StaticUnicodeString.Buffer, lpBinaryType);
479 SetLastError(RtlNtStatusToDosError(status));
484 /***********************************************************************
485 * GetModuleHandleA (KERNEL32.@)
486 * GetModuleHandle32 (KERNEL.488)
488 * Get the handle of a dll loaded into the process address space.
491 * module [I] Name of the dll
494 * Success: A handle to the loaded dll.
495 * Failure: A NULL handle. Use GetLastError() to determine the cause.
497 HMODULE WINAPI GetModuleHandleA(LPCSTR module)
501 if (!module) return NtCurrentTeb()->Peb->ImageBaseAddress;
502 if (!(moduleW = FILE_name_AtoW( module, FALSE ))) return 0;
503 return GetModuleHandleW( moduleW );
506 /***********************************************************************
507 * GetModuleHandleW (KERNEL32.@)
509 * Unicode version of GetModuleHandleA.
511 HMODULE WINAPI GetModuleHandleW(LPCWSTR module)
517 if (!module) return NtCurrentTeb()->Peb->ImageBaseAddress;
519 RtlInitUnicodeString( &wstr, module );
520 nts = LdrGetDllHandle( 0, 0, &wstr, &ret);
521 if (nts != STATUS_SUCCESS)
523 SetLastError( RtlNtStatusToDosError( nts ) );
530 /***********************************************************************
531 * GetModuleFileNameA (KERNEL32.@)
532 * GetModuleFileName32 (KERNEL.487)
534 * Get the file name of a loaded module from its handle.
537 * Success: The length of the file name, excluding the terminating NUL.
538 * Failure: 0. Use GetLastError() to determine the cause.
541 * This function always returns the long path of hModule (as opposed to
542 * GetModuleFileName16() which returns short paths when the modules version
544 * The function doesn't write a terminating '\0' if the buffer is too
547 DWORD WINAPI GetModuleFileNameA(
548 HMODULE hModule, /* [in] Module handle (32 bit) */
549 LPSTR lpFileName, /* [out] Destination for file name */
550 DWORD size ) /* [in] Size of lpFileName in characters */
552 LPWSTR filenameW = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) );
557 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
560 if ((len = GetModuleFileNameW( hModule, filenameW, size )))
562 len = FILE_name_WtoA( filenameW, len, lpFileName, size );
563 if (len < size) lpFileName[len] = '\0';
565 HeapFree( GetProcessHeap(), 0, filenameW );
569 /***********************************************************************
570 * GetModuleFileNameW (KERNEL32.@)
572 * Unicode version of GetModuleFileNameA.
574 DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size )
576 ULONG magic, len = 0;
579 WIN16_SUBSYSTEM_TIB *win16_tib;
581 if (!hModule && ((win16_tib = NtCurrentTeb()->Tib.SubSystemTib)) && win16_tib->exe_name)
583 len = min(size, win16_tib->exe_name->Length / sizeof(WCHAR));
584 memcpy( lpFileName, win16_tib->exe_name->Buffer, len * sizeof(WCHAR) );
585 if (len < size) lpFileName[len] = '\0';
589 LdrLockLoaderLock( 0, NULL, &magic );
591 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
592 nts = LdrFindEntryForAddress( hModule, &pldr );
593 if (nts == STATUS_SUCCESS)
595 len = min(size, pldr->FullDllName.Length / sizeof(WCHAR));
596 memcpy(lpFileName, pldr->FullDllName.Buffer, len * sizeof(WCHAR));
597 if (len < size) lpFileName[len] = '\0';
599 else SetLastError( RtlNtStatusToDosError( nts ) );
601 LdrUnlockLoaderLock( 0, magic );
603 TRACE( "%s\n", debugstr_wn(lpFileName, len) );
608 /***********************************************************************
609 * get_dll_system_path
611 static const WCHAR *get_dll_system_path(void)
613 static WCHAR *cached_path;
620 len += GetSystemDirectoryW( NULL, 0 );
621 len += GetWindowsDirectoryW( NULL, 0 );
622 p = path = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
625 GetSystemDirectoryW( p, path + len - p);
628 GetWindowsDirectoryW( p, path + len - p);
635 /******************************************************************
636 * MODULE_get_dll_load_path
638 * Compute the load path to use for a given dll.
639 * Returned pointer must be freed by caller.
641 WCHAR *MODULE_get_dll_load_path( LPCWSTR module )
643 static const WCHAR pathW[] = {'P','A','T','H',0};
645 const WCHAR *system_path = get_dll_system_path();
646 const WCHAR *mod_end = NULL;
647 UNICODE_STRING name, value;
649 int len = 0, path_len = 0;
651 /* adjust length for module name */
653 if (!module) module = NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer;
657 if ((p = strrchrW( mod_end, '\\' ))) mod_end = p;
658 if ((p = strrchrW( mod_end, '/' ))) mod_end = p;
659 if (mod_end == module + 2 && module[1] == ':') mod_end++;
660 if (mod_end == module && module[0] && module[1] == ':') mod_end += 2;
661 len += (mod_end - module) + 1;
663 len += strlenW( system_path ) + 2;
665 /* get the PATH variable */
667 RtlInitUnicodeString( &name, pathW );
669 value.MaximumLength = 0;
671 if (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
672 path_len = value.Length;
674 RtlEnterCriticalSection( &dlldir_section );
675 if (dll_directory) len += strlenW(dll_directory) + 1;
676 if ((p = ret = HeapAlloc( GetProcessHeap(), 0, path_len + len * sizeof(WCHAR) )))
680 memcpy( ret, module, (mod_end - module) * sizeof(WCHAR) );
681 p += (mod_end - module);
686 strcpyW( p, dll_directory );
691 RtlLeaveCriticalSection( &dlldir_section );
692 if (!ret) return NULL;
694 strcpyW( p, system_path );
698 value.MaximumLength = path_len;
700 while (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
704 /* grow the buffer and retry */
705 path_len = value.Length;
706 if (!(new_ptr = HeapReAlloc( GetProcessHeap(), 0, ret, path_len + len * sizeof(WCHAR) )))
708 HeapFree( GetProcessHeap(), 0, ret );
711 value.Buffer = new_ptr + (value.Buffer - ret);
712 value.MaximumLength = path_len;
715 value.Buffer[value.Length / sizeof(WCHAR)] = 0;
720 /******************************************************************
721 * load_library_as_datafile
723 static BOOL load_library_as_datafile( LPCWSTR name, HMODULE* hmod)
725 static const WCHAR dotDLL[] = {'.','d','l','l',0};
727 WCHAR filenameW[MAX_PATH];
728 HANDLE hFile = INVALID_HANDLE_VALUE;
734 if (SearchPathW( NULL, (LPCWSTR)name, dotDLL, sizeof(filenameW) / sizeof(filenameW[0]),
737 hFile = CreateFileW( filenameW, GENERIC_READ, FILE_SHARE_READ,
738 NULL, OPEN_EXISTING, 0, 0 );
740 if (hFile == INVALID_HANDLE_VALUE) return FALSE;
742 mapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
743 CloseHandle( hFile );
744 if (!mapping) return FALSE;
746 module = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
747 CloseHandle( mapping );
748 if (!module) return FALSE;
750 /* make sure it's a valid PE file */
751 if (!RtlImageNtHeader(module))
753 UnmapViewOfFile( module );
756 *hmod = (HMODULE)((char *)module + 1); /* set low bit of handle to indicate datafile module */
761 /******************************************************************
764 * Helper for LoadLibraryExA/W.
766 static HMODULE load_library( const UNICODE_STRING *libname, DWORD flags )
772 if (flags & LOAD_LIBRARY_AS_DATAFILE)
774 /* The method in load_library_as_datafile allows searching for the
775 * 'native' libraries only
777 if (load_library_as_datafile( libname->Buffer, &hModule )) return hModule;
778 flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
779 /* Fallback to normal behaviour */
782 load_path = MODULE_get_dll_load_path( flags & LOAD_WITH_ALTERED_SEARCH_PATH ? libname->Buffer : NULL );
783 nts = LdrLoadDll( load_path, flags, libname, &hModule );
784 HeapFree( GetProcessHeap(), 0, load_path );
785 if (nts != STATUS_SUCCESS)
788 SetLastError( RtlNtStatusToDosError( nts ) );
794 /******************************************************************
795 * LoadLibraryExA (KERNEL32.@)
797 * Load a dll file into the process address space.
800 * libname [I] Name of the file to load
801 * hfile [I] Reserved, must be 0.
802 * flags [I] Flags for loading the dll
805 * Success: A handle to the loaded dll.
806 * Failure: A NULL handle. Use GetLastError() to determine the cause.
809 * The HFILE parameter is not used and marked reserved in the SDK. I can
810 * only guess that it should force a file to be mapped, but I rather
811 * ignore the parameter because it would be extremely difficult to
812 * integrate this with different types of module representations.
814 HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
818 if (!(libnameW = FILE_name_AtoW( libname, FALSE ))) return 0;
819 return LoadLibraryExW( libnameW, hfile, flags );
822 /***********************************************************************
823 * LoadLibraryExW (KERNEL32.@)
825 * Unicode version of LoadLibraryExA.
827 HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW, HANDLE hfile, DWORD flags)
833 SetLastError(ERROR_INVALID_PARAMETER);
836 RtlInitUnicodeString( &wstr, libnameW );
837 return load_library( &wstr, flags );
840 /***********************************************************************
841 * LoadLibraryA (KERNEL32.@)
843 * Load a dll file into the process address space.
846 * libname [I] Name of the file to load
849 * Success: A handle to the loaded dll.
850 * Failure: A NULL handle. Use GetLastError() to determine the cause.
853 * See LoadLibraryExA().
855 HMODULE WINAPI LoadLibraryA(LPCSTR libname)
857 return LoadLibraryExA(libname, 0, 0);
860 /***********************************************************************
861 * LoadLibraryW (KERNEL32.@)
863 * Unicode version of LoadLibraryA.
865 HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW)
867 return LoadLibraryExW(libnameW, 0, 0);
870 /***********************************************************************
871 * FreeLibrary (KERNEL32.@)
872 * FreeLibrary32 (KERNEL.486)
874 * Free a dll loaded into the process address space.
877 * hLibModule [I] Handle to the dll returned by LoadLibraryA().
880 * Success: TRUE. The dll is removed if it is not still in use.
881 * Failure: FALSE. Use GetLastError() to determine the cause.
883 BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
890 SetLastError( ERROR_INVALID_HANDLE );
894 if ((ULONG_PTR)hLibModule & 1)
896 /* this is a LOAD_LIBRARY_AS_DATAFILE module */
897 char *ptr = (char *)hLibModule - 1;
898 UnmapViewOfFile( ptr );
902 if ((nts = LdrUnloadDll( hLibModule )) == STATUS_SUCCESS) retv = TRUE;
903 else SetLastError( RtlNtStatusToDosError( nts ) );
908 /***********************************************************************
909 * GetProcAddress (KERNEL32.@)
911 * Find the address of an exported symbol in a loaded dll.
914 * hModule [I] Handle to the dll returned by LoadLibraryA().
915 * function [I] Name of the symbol, or an integer ordinal number < 16384
918 * Success: A pointer to the symbol in the process address space.
919 * Failure: NULL. Use GetLastError() to determine the cause.
921 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
926 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
928 if (HIWORD(function))
932 RtlInitAnsiString( &str, function );
933 nts = LdrGetProcedureAddress( hModule, &str, 0, (void**)&fp );
936 nts = LdrGetProcedureAddress( hModule, NULL, (DWORD)function, (void**)&fp );
937 if (nts != STATUS_SUCCESS)
939 SetLastError( RtlNtStatusToDosError( nts ) );
945 /***********************************************************************
946 * GetProcAddress32 (KERNEL.453)
948 * Find the address of an exported symbol in a loaded dll.
951 * hModule [I] Handle to the dll returned by LoadLibraryA().
952 * function [I] Name of the symbol, or an integer ordinal number < 16384
955 * Success: A pointer to the symbol in the process address space.
956 * Failure: NULL. Use GetLastError() to determine the cause.
958 FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function )
960 /* FIXME: we used to disable snoop when returning proc for Win16 subsystem */
961 return GetProcAddress( hModule, function );