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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
28 #include <sys/types.h>
33 #define WIN32_NO_STATUS
34 #include "wine/winbase16.h"
39 #include "kernel_private.h"
41 #include "wine/exception.h"
42 #include "wine/debug.h"
43 #include "wine/unicode.h"
45 WINE_DEFAULT_DEBUG_CHANNEL(module);
47 static WCHAR *dll_directory; /* extra path for SetDllDirectoryW */
49 static CRITICAL_SECTION dlldir_section;
50 static CRITICAL_SECTION_DEBUG critsect_debug =
52 0, 0, &dlldir_section,
53 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
54 0, 0, { (DWORD_PTR)(__FILE__ ": dlldir_section") }
56 static CRITICAL_SECTION dlldir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
59 /****************************************************************************
60 * GetDllDirectoryA (KERNEL32.@)
62 DWORD WINAPI GetDllDirectoryA( DWORD buf_len, LPSTR buffer )
66 RtlEnterCriticalSection( &dlldir_section );
67 len = dll_directory ? FILE_name_WtoA( dll_directory, strlenW(dll_directory), NULL, 0 ) : 0;
68 if (buffer && buf_len > len)
70 if (dll_directory) FILE_name_WtoA( dll_directory, -1, buffer, buf_len );
75 len++; /* for terminating null */
76 if (buffer) *buffer = 0;
78 RtlLeaveCriticalSection( &dlldir_section );
83 /****************************************************************************
84 * GetDllDirectoryW (KERNEL32.@)
86 DWORD WINAPI GetDllDirectoryW( DWORD buf_len, LPWSTR buffer )
90 RtlEnterCriticalSection( &dlldir_section );
91 len = dll_directory ? strlenW( dll_directory ) : 0;
92 if (buffer && buf_len > len)
94 if (dll_directory) memcpy( buffer, dll_directory, (len + 1) * sizeof(WCHAR) );
99 len++; /* for terminating null */
100 if (buffer) *buffer = 0;
102 RtlLeaveCriticalSection( &dlldir_section );
107 /****************************************************************************
108 * SetDllDirectoryA (KERNEL32.@)
110 BOOL WINAPI SetDllDirectoryA( LPCSTR dir )
115 if (!(dirW = FILE_name_AtoW( dir, TRUE ))) return FALSE;
116 ret = SetDllDirectoryW( dirW );
117 HeapFree( GetProcessHeap(), 0, dirW );
122 /****************************************************************************
123 * SetDllDirectoryW (KERNEL32.@)
125 BOOL WINAPI SetDllDirectoryW( LPCWSTR dir )
127 WCHAR *newdir = NULL;
131 DWORD len = (strlenW(dir) + 1) * sizeof(WCHAR);
132 if (!(newdir = HeapAlloc( GetProcessHeap(), 0, len )))
134 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
137 memcpy( newdir, dir, len );
140 RtlEnterCriticalSection( &dlldir_section );
141 HeapFree( GetProcessHeap(), 0, dll_directory );
142 dll_directory = newdir;
143 RtlLeaveCriticalSection( &dlldir_section );
148 /****************************************************************************
149 * DisableThreadLibraryCalls (KERNEL32.@)
151 * Inform the module loader that thread notifications are not required for a dll.
154 * hModule [I] Module handle to skip calls for
157 * Success: TRUE. Thread attach and detach notifications will not be sent
159 * Failure: FALSE. Use GetLastError() to determine the cause.
162 * This is typically called from the dll entry point of a dll during process
163 * attachment, for dlls that do not need to process thread notifications.
165 BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
167 NTSTATUS nts = LdrDisableThreadCalloutsForDll( hModule );
168 if (nts == STATUS_SUCCESS) return TRUE;
170 SetLastError( RtlNtStatusToDosError( nts ) );
175 /* Check whether a file is an OS/2 or a very old Windows executable
176 * by testing on import of KERNEL.
178 * FIXME: is reading the module imports the only way of discerning
179 * old Windows binaries from OS/2 ones ? At least it seems so...
181 static DWORD MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz, const IMAGE_OS2_HEADER *ne)
183 DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
184 DWORD ret = BINARY_OS216;
185 LPWORD modtab = NULL;
186 LPSTR nametab = NULL;
190 /* read modref table */
191 if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
192 || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
193 || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
194 || (len != ne->ne_cmod*sizeof(WORD)) )
197 /* read imported names table */
198 if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
199 || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
200 || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
201 || (len != ne->ne_enttab - ne->ne_imptab) )
204 for (i=0; i < ne->ne_cmod; i++)
206 LPSTR module = &nametab[modtab[i]];
207 TRACE("modref: %.*s\n", module[0], &module[1]);
208 if (!(strncmp(&module[1], "KERNEL", module[0])))
209 { /* very old Windows file */
210 MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
217 ERR("Hmm, an error occurred. Is this binary file broken?\n");
220 HeapFree( GetProcessHeap(), 0, modtab);
221 HeapFree( GetProcessHeap(), 0, nametab);
222 SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
226 /***********************************************************************
227 * MODULE_GetBinaryType
229 DWORD MODULE_GetBinaryType( HANDLE hfile, void **res_start, void **res_end )
235 unsigned char magic[4];
236 unsigned char ignored[12];
242 unsigned long cputype;
243 unsigned long cpusubtype;
244 unsigned long filetype;
251 /* Seek to the start of the file and read the header information. */
252 if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1)
253 return BINARY_UNKNOWN;
254 if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header))
255 return BINARY_UNKNOWN;
257 if (!memcmp( header.elf.magic, "\177ELF", 4 ))
259 /* FIXME: we don't bother to check byte order, architecture, etc. */
260 switch(header.elf.type)
262 case 2: return BINARY_UNIX_EXE;
263 case 3: return BINARY_UNIX_LIB;
265 return BINARY_UNKNOWN;
268 /* Mach-o File with Endian set to Big Endian or Little Endian */
269 if (header.macho.magic == 0xfeedface || header.macho.magic == 0xcefaedfe)
271 switch(header.macho.filetype)
273 case 0x8: /* MH_BUNDLE */ return BINARY_UNIX_LIB;
275 return BINARY_UNKNOWN;
278 /* Not ELF, try DOS */
280 if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
284 IMAGE_OS2_HEADER os2;
288 /* We do have a DOS image so we will now try to seek into
289 * the file by the amount indicated by the field
290 * "Offset to extended header" and read in the
291 * "magic" field information at that location.
292 * This will tell us if there is more header information
295 if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1)
297 if (!ReadFile( hfile, &ext_header, sizeof(ext_header), &len, NULL ) || len < 4)
300 /* Reading the magic field succeeded so
301 * we will try to determine what type it is.
303 if (!memcmp( &ext_header.nt.Signature, "PE\0\0", 4 ))
305 if (len >= sizeof(ext_header.nt.FileHeader))
307 DWORD ret = BINARY_PE;
308 if (ext_header.nt.FileHeader.Characteristics & IMAGE_FILE_DLL) ret |= BINARY_FLAG_DLL;
309 if (len < sizeof(ext_header.nt)) /* clear remaining part of header if missing */
310 memset( (char *)&ext_header.nt + len, 0, sizeof(ext_header.nt) - len );
311 if (res_start) *res_start = (void *)ext_header.nt.OptionalHeader.ImageBase;
312 if (res_end) *res_end = (void *)(ext_header.nt.OptionalHeader.ImageBase +
313 ext_header.nt.OptionalHeader.SizeOfImage);
319 if (!memcmp( &ext_header.os2.ne_magic, "NE", 2 ))
321 /* This is a Windows executable (NE) header. This can
322 * mean either a 16-bit OS/2 or a 16-bit Windows or even a
323 * DOS program (running under a DOS extender). To decide
324 * which, we'll have to read the NE header.
326 if (len >= sizeof(ext_header.os2))
328 DWORD flags = (ext_header.os2.ne_flags & NE_FFLAGS_LIBMODULE) ? BINARY_FLAG_DLL : 0;
329 switch ( ext_header.os2.ne_exetyp )
331 case 1: return flags | BINARY_OS216; /* OS/2 */
332 case 2: return flags | BINARY_WIN16; /* Windows */
333 case 3: return flags | BINARY_DOS; /* European MS-DOS 4.x */
334 case 4: return flags | BINARY_WIN16; /* Windows 386; FIXME: is this 32bit??? */
335 case 5: return flags | BINARY_DOS; /* BOSS, Borland Operating System Services */
336 /* other types, e.g. 0 is: "unknown" */
337 default: return flags | MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ext_header.os2);
340 /* Couldn't read header, so abort. */
344 /* Unknown extended header, but this file is nonetheless DOS-executable. */
348 return BINARY_UNKNOWN;
351 /***********************************************************************
352 * GetBinaryTypeW [KERNEL32.@]
354 * Determine whether a file is executable, and if so, what kind.
357 * lpApplicationName [I] Path of the file to check
358 * lpBinaryType [O] Destination for the binary type
361 * TRUE, if the file is an executable, in which case lpBinaryType is set.
362 * FALSE, if the file is not an executable or if the function fails.
365 * The type of executable is a property that determines which subsystem an
366 * executable file runs under. lpBinaryType can be set to one of the following
368 * SCS_32BIT_BINARY: A Win32 based application
369 * SCS_DOS_BINARY: An MS-Dos based application
370 * SCS_WOW_BINARY: A Win16 based application
371 * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
372 * SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
373 * SCS_OS216_BINARY: A 16bit OS/2 based application
375 * To find the binary type, this function reads in the files header information.
376 * If extended header information is not present it will assume that the file
377 * is a DOS executable. If extended header information is present it will
378 * determine if the file is a 16 or 32 bit Windows executable by checking the
379 * flags in the header.
381 * ".com" and ".pif" files are only recognized by their file name extension,
382 * as per native Windows.
384 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
390 TRACE("%s\n", debugstr_w(lpApplicationName) );
394 if ( lpApplicationName == NULL || lpBinaryType == NULL )
397 /* Open the file indicated by lpApplicationName for reading.
399 hfile = CreateFileW( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
400 NULL, OPEN_EXISTING, 0, 0 );
401 if ( hfile == INVALID_HANDLE_VALUE )
406 binary_type = MODULE_GetBinaryType( hfile, NULL, NULL );
407 switch (binary_type & BINARY_TYPE_MASK)
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;
431 *lpBinaryType = SCS_32BIT_BINARY;
435 *lpBinaryType = SCS_WOW_BINARY;
439 *lpBinaryType = SCS_OS216_BINARY;
443 *lpBinaryType = SCS_DOS_BINARY;
446 case BINARY_UNIX_EXE:
447 case BINARY_UNIX_LIB:
452 CloseHandle( hfile );
456 /***********************************************************************
457 * GetBinaryTypeA [KERNEL32.@]
458 * GetBinaryType [KERNEL32.@]
460 * See GetBinaryTypeW.
462 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
464 ANSI_STRING app_nameA;
467 TRACE("%s\n", debugstr_a(lpApplicationName));
471 if ( lpApplicationName == NULL || lpBinaryType == NULL )
474 RtlInitAnsiString(&app_nameA, lpApplicationName);
475 status = RtlAnsiStringToUnicodeString(&NtCurrentTeb()->StaticUnicodeString,
478 return GetBinaryTypeW(NtCurrentTeb()->StaticUnicodeString.Buffer, lpBinaryType);
480 SetLastError(RtlNtStatusToDosError(status));
484 /***********************************************************************
485 * GetModuleHandleExA (KERNEL32.@)
487 BOOL WINAPI GetModuleHandleExA( DWORD flags, LPCSTR name, HMODULE *module )
491 if (!name || (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS))
492 return GetModuleHandleExW( flags, (LPCWSTR)name, module );
494 if (!(nameW = FILE_name_AtoW( name, FALSE ))) return FALSE;
495 return GetModuleHandleExW( flags, nameW, module );
498 /***********************************************************************
499 * GetModuleHandleExW (KERNEL32.@)
501 BOOL WINAPI GetModuleHandleExW( DWORD flags, LPCWSTR name, HMODULE *module )
503 NTSTATUS status = STATUS_SUCCESS;
507 /* if we are messing with the refcount, grab the loader lock */
508 if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
509 !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
510 LdrLockLoaderLock( 0, NULL, &magic );
514 ret = NtCurrentTeb()->Peb->ImageBaseAddress;
516 else if (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS)
519 if (!(ret = RtlPcToFileHeader( (void *)name, &dummy ))) status = STATUS_DLL_NOT_FOUND;
524 RtlInitUnicodeString( &wstr, name );
525 status = LdrGetDllHandle( NULL, 0, &wstr, &ret );
528 if (status == STATUS_SUCCESS)
530 if (flags & GET_MODULE_HANDLE_EX_FLAG_PIN)
531 FIXME( "should pin refcount for %p\n", ret );
532 else if (!(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
533 LdrAddRefDll( 0, ret );
535 else SetLastError( RtlNtStatusToDosError( status ) );
537 if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
538 !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
539 LdrUnlockLoaderLock( 0, magic );
541 if (module) *module = ret;
542 return (status == STATUS_SUCCESS);
545 /***********************************************************************
546 * GetModuleHandleA (KERNEL32.@)
547 * GetModuleHandle32 (KERNEL.488)
549 * Get the handle of a dll loaded into the process address space.
552 * module [I] Name of the dll
555 * Success: A handle to the loaded dll.
556 * Failure: A NULL handle. Use GetLastError() to determine the cause.
558 HMODULE WINAPI GetModuleHandleA(LPCSTR module)
562 if (!GetModuleHandleExA( GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, module, &ret )) ret = 0;
566 /***********************************************************************
567 * GetModuleHandleW (KERNEL32.@)
569 * Unicode version of GetModuleHandleA.
571 HMODULE WINAPI GetModuleHandleW(LPCWSTR module)
575 if (!GetModuleHandleExW( GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, module, &ret )) ret = 0;
580 /***********************************************************************
581 * GetModuleFileNameA (KERNEL32.@)
582 * GetModuleFileName32 (KERNEL.487)
584 * Get the file name of a loaded module from its handle.
587 * Success: The length of the file name, excluding the terminating NUL.
588 * Failure: 0. Use GetLastError() to determine the cause.
591 * This function always returns the long path of hModule (as opposed to
592 * GetModuleFileName16() which returns short paths when the modules version
594 * The function doesn't write a terminating '\0' if the buffer is too
597 DWORD WINAPI GetModuleFileNameA(
598 HMODULE hModule, /* [in] Module handle (32 bit) */
599 LPSTR lpFileName, /* [out] Destination for file name */
600 DWORD size ) /* [in] Size of lpFileName in characters */
602 LPWSTR filenameW = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) );
607 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
610 if ((len = GetModuleFileNameW( hModule, filenameW, size )))
612 len = FILE_name_WtoA( filenameW, len, lpFileName, size );
614 lpFileName[len] = '\0';
616 SetLastError( ERROR_INSUFFICIENT_BUFFER );
618 HeapFree( GetProcessHeap(), 0, filenameW );
622 /***********************************************************************
623 * GetModuleFileNameW (KERNEL32.@)
625 * Unicode version of GetModuleFileNameA.
627 DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size )
629 ULONG magic, len = 0;
632 WIN16_SUBSYSTEM_TIB *win16_tib;
634 if (!hModule && ((win16_tib = NtCurrentTeb()->Tib.SubSystemTib)) && win16_tib->exe_name)
636 len = min(size, win16_tib->exe_name->Length / sizeof(WCHAR));
637 memcpy( lpFileName, win16_tib->exe_name->Buffer, len * sizeof(WCHAR) );
638 if (len < size) lpFileName[len] = '\0';
642 LdrLockLoaderLock( 0, NULL, &magic );
644 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
645 nts = LdrFindEntryForAddress( hModule, &pldr );
646 if (nts == STATUS_SUCCESS)
648 len = min(size, pldr->FullDllName.Length / sizeof(WCHAR));
649 memcpy(lpFileName, pldr->FullDllName.Buffer, len * sizeof(WCHAR));
651 lpFileName[len] = '\0';
653 SetLastError( ERROR_INSUFFICIENT_BUFFER );
655 else SetLastError( RtlNtStatusToDosError( nts ) );
657 LdrUnlockLoaderLock( 0, magic );
659 TRACE( "%s\n", debugstr_wn(lpFileName, len) );
664 /***********************************************************************
665 * get_dll_system_path
667 static const WCHAR *get_dll_system_path(void)
669 static WCHAR *cached_path;
676 len += 2 * GetSystemDirectoryW( NULL, 0 );
677 len += GetWindowsDirectoryW( NULL, 0 );
678 p = path = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
681 GetSystemDirectoryW( p, path + len - p);
683 /* if system directory ends in "32" add 16-bit version too */
684 if (p[-2] == '3' && p[-1] == '2')
687 GetSystemDirectoryW( p, path + len - p);
691 GetWindowsDirectoryW( p, path + len - p);
697 /******************************************************************
698 * get_module_path_end
700 * Returns the end of the directory component of the module path.
702 static inline const WCHAR *get_module_path_end(const WCHAR *module)
705 const WCHAR *mod_end = module;
706 if (!module) return mod_end;
708 if ((p = strrchrW( mod_end, '\\' ))) mod_end = p;
709 if ((p = strrchrW( mod_end, '/' ))) mod_end = p;
710 if (mod_end == module + 2 && module[1] == ':') mod_end++;
711 if (mod_end == module && module[0] && module[1] == ':') mod_end += 2;
716 /******************************************************************
717 * MODULE_get_dll_load_path
719 * Compute the load path to use for a given dll.
720 * Returned pointer must be freed by caller.
722 WCHAR *MODULE_get_dll_load_path( LPCWSTR module )
724 static const WCHAR pathW[] = {'P','A','T','H',0};
726 const WCHAR *system_path = get_dll_system_path();
727 const WCHAR *mod_end = NULL;
728 UNICODE_STRING name, value;
730 int len = 0, path_len = 0;
732 /* adjust length for module name */
735 mod_end = get_module_path_end( module );
736 /* if module is NULL or doesn't contain a path, fall back to directory
737 * process was loaded from */
738 if (module == mod_end)
740 module = NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer;
741 mod_end = get_module_path_end( module );
743 len += (mod_end - module) + 1;
745 len += strlenW( system_path ) + 2;
747 /* get the PATH variable */
749 RtlInitUnicodeString( &name, pathW );
751 value.MaximumLength = 0;
753 if (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
754 path_len = value.Length;
756 RtlEnterCriticalSection( &dlldir_section );
757 if (dll_directory) len += strlenW(dll_directory) + 1;
758 if ((p = ret = HeapAlloc( GetProcessHeap(), 0, path_len + len * sizeof(WCHAR) )))
762 memcpy( ret, module, (mod_end - module) * sizeof(WCHAR) );
763 p += (mod_end - module);
768 strcpyW( p, dll_directory );
773 RtlLeaveCriticalSection( &dlldir_section );
774 if (!ret) return NULL;
776 strcpyW( p, system_path );
780 value.MaximumLength = path_len;
782 while (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
786 /* grow the buffer and retry */
787 path_len = value.Length;
788 if (!(new_ptr = HeapReAlloc( GetProcessHeap(), 0, ret, path_len + len * sizeof(WCHAR) )))
790 HeapFree( GetProcessHeap(), 0, ret );
793 value.Buffer = new_ptr + (value.Buffer - ret);
794 value.MaximumLength = path_len;
797 value.Buffer[value.Length / sizeof(WCHAR)] = 0;
802 /******************************************************************
803 * load_library_as_datafile
805 static BOOL load_library_as_datafile( LPCWSTR name, HMODULE* hmod)
807 static const WCHAR dotDLL[] = {'.','d','l','l',0};
809 WCHAR filenameW[MAX_PATH];
810 HANDLE hFile = INVALID_HANDLE_VALUE;
816 if (SearchPathW( NULL, name, dotDLL, sizeof(filenameW) / sizeof(filenameW[0]),
819 hFile = CreateFileW( filenameW, GENERIC_READ, FILE_SHARE_READ,
820 NULL, OPEN_EXISTING, 0, 0 );
822 if (hFile == INVALID_HANDLE_VALUE) return FALSE;
824 mapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
825 CloseHandle( hFile );
826 if (!mapping) return FALSE;
828 module = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
829 CloseHandle( mapping );
830 if (!module) return FALSE;
832 /* make sure it's a valid PE file */
833 if (!RtlImageNtHeader(module))
835 UnmapViewOfFile( module );
838 *hmod = (HMODULE)((char *)module + 1); /* set low bit of handle to indicate datafile module */
843 /******************************************************************
846 * Helper for LoadLibraryExA/W.
848 static HMODULE load_library( const UNICODE_STRING *libname, DWORD flags )
854 load_path = MODULE_get_dll_load_path( flags & LOAD_WITH_ALTERED_SEARCH_PATH ? libname->Buffer : NULL );
856 if (flags & LOAD_LIBRARY_AS_DATAFILE)
860 LdrLockLoaderLock( 0, NULL, &magic );
861 if (!(nts = LdrGetDllHandle( load_path, flags, libname, &hModule )))
863 LdrAddRefDll( 0, hModule );
864 LdrUnlockLoaderLock( 0, magic );
867 LdrUnlockLoaderLock( 0, magic );
869 /* The method in load_library_as_datafile allows searching for the
870 * 'native' libraries only
872 if (load_library_as_datafile( libname->Buffer, &hModule )) goto done;
873 flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
874 /* Fallback to normal behaviour */
877 nts = LdrLoadDll( load_path, flags, libname, &hModule );
878 if (nts != STATUS_SUCCESS)
881 SetLastError( RtlNtStatusToDosError( nts ) );
884 HeapFree( GetProcessHeap(), 0, load_path );
889 /******************************************************************
890 * LoadLibraryExA (KERNEL32.@)
892 * Load a dll file into the process address space.
895 * libname [I] Name of the file to load
896 * hfile [I] Reserved, must be 0.
897 * flags [I] Flags for loading the dll
900 * Success: A handle to the loaded dll.
901 * Failure: A NULL handle. Use GetLastError() to determine the cause.
904 * The HFILE parameter is not used and marked reserved in the SDK. I can
905 * only guess that it should force a file to be mapped, but I rather
906 * ignore the parameter because it would be extremely difficult to
907 * integrate this with different types of module representations.
909 HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
913 if (!(libnameW = FILE_name_AtoW( libname, FALSE ))) return 0;
914 return LoadLibraryExW( libnameW, hfile, flags );
917 /***********************************************************************
918 * LoadLibraryExW (KERNEL32.@)
920 * Unicode version of LoadLibraryExA.
922 HMODULE WINAPI LoadLibraryExW(LPCWSTR libnameW, HANDLE hfile, DWORD flags)
929 SetLastError(ERROR_INVALID_PARAMETER);
932 RtlInitUnicodeString( &wstr, libnameW );
933 if (wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] != ' ')
934 return load_library( &wstr, flags );
936 /* Library name has trailing spaces */
937 RtlCreateUnicodeString( &wstr, libnameW );
938 while (wstr.Length > sizeof(WCHAR) &&
939 wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] == ' ')
941 wstr.Length -= sizeof(WCHAR);
943 wstr.Buffer[wstr.Length/sizeof(WCHAR)] = '\0';
944 res = load_library( &wstr, flags );
945 RtlFreeUnicodeString( &wstr );
949 /***********************************************************************
950 * LoadLibraryA (KERNEL32.@)
952 * Load a dll file into the process address space.
955 * libname [I] Name of the file to load
958 * Success: A handle to the loaded dll.
959 * Failure: A NULL handle. Use GetLastError() to determine the cause.
962 * See LoadLibraryExA().
964 HMODULE WINAPI LoadLibraryA(LPCSTR libname)
966 return LoadLibraryExA(libname, 0, 0);
969 /***********************************************************************
970 * LoadLibraryW (KERNEL32.@)
972 * Unicode version of LoadLibraryA.
974 HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW)
976 return LoadLibraryExW(libnameW, 0, 0);
979 /***********************************************************************
980 * FreeLibrary (KERNEL32.@)
981 * FreeLibrary32 (KERNEL.486)
983 * Free a dll loaded into the process address space.
986 * hLibModule [I] Handle to the dll returned by LoadLibraryA().
989 * Success: TRUE. The dll is removed if it is not still in use.
990 * Failure: FALSE. Use GetLastError() to determine the cause.
992 BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
999 SetLastError( ERROR_INVALID_HANDLE );
1003 if ((ULONG_PTR)hLibModule & 1)
1005 /* this is a LOAD_LIBRARY_AS_DATAFILE module */
1006 char *ptr = (char *)hLibModule - 1;
1007 UnmapViewOfFile( ptr );
1011 if ((nts = LdrUnloadDll( hLibModule )) == STATUS_SUCCESS) retv = TRUE;
1012 else SetLastError( RtlNtStatusToDosError( nts ) );
1017 /***********************************************************************
1018 * GetProcAddress (KERNEL32.@)
1020 * Find the address of an exported symbol in a loaded dll.
1023 * hModule [I] Handle to the dll returned by LoadLibraryA().
1024 * function [I] Name of the symbol, or an integer ordinal number < 16384
1027 * Success: A pointer to the symbol in the process address space.
1028 * Failure: NULL. Use GetLastError() to determine the cause.
1030 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
1035 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
1037 if (HIWORD(function))
1041 RtlInitAnsiString( &str, function );
1042 nts = LdrGetProcedureAddress( hModule, &str, 0, (void**)&fp );
1045 nts = LdrGetProcedureAddress( hModule, NULL, LOWORD(function), (void**)&fp );
1046 if (nts != STATUS_SUCCESS)
1048 SetLastError( RtlNtStatusToDosError( nts ) );
1054 /***********************************************************************
1055 * GetProcAddress32 (KERNEL.453)
1057 * Find the address of an exported symbol in a loaded dll.
1060 * hModule [I] Handle to the dll returned by LoadLibraryA().
1061 * function [I] Name of the symbol, or an integer ordinal number < 16384
1064 * Success: A pointer to the symbol in the process address space.
1065 * Failure: NULL. Use GetLastError() to determine the cause.
1067 FARPROC WINAPI GetProcAddress32_16( HMODULE hModule, LPCSTR function )
1069 /* FIXME: we used to disable snoop when returning proc for Win16 subsystem */
1070 return GetProcAddress( hModule, function );
1074 /***********************************************************************
1075 * DelayLoadFailureHook (KERNEL32.@)
1077 FARPROC WINAPI DelayLoadFailureHook( LPCSTR name, LPCSTR function )
1081 if ((ULONG_PTR)function >> 16)
1082 ERR( "failed to delay load %s.%s\n", name, function );
1084 ERR( "failed to delay load %s.%u\n", name, LOWORD(function) );
1085 args[0] = (ULONG_PTR)name;
1086 args[1] = (ULONG_PTR)function;
1087 RaiseException( EXCEPTION_WINE_STUB, EH_NONCONTINUABLE, 2, args );