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
38 #include "kernel_private.h"
40 #include "wine/exception.h"
41 #include "wine/debug.h"
42 #include "wine/unicode.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(module);
46 #define NE_FFLAGS_LIBMODULE 0x8000
48 static WCHAR *dll_directory; /* extra path for SetDllDirectoryW */
50 static CRITICAL_SECTION dlldir_section;
51 static CRITICAL_SECTION_DEBUG critsect_debug =
53 0, 0, &dlldir_section,
54 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
55 0, 0, { (DWORD_PTR)(__FILE__ ": dlldir_section") }
57 static CRITICAL_SECTION dlldir_section = { &critsect_debug, -1, 0, 0, 0, 0 };
60 /****************************************************************************
61 * GetDllDirectoryA (KERNEL32.@)
63 DWORD WINAPI GetDllDirectoryA( DWORD buf_len, LPSTR buffer )
67 RtlEnterCriticalSection( &dlldir_section );
68 len = dll_directory ? FILE_name_WtoA( dll_directory, strlenW(dll_directory), NULL, 0 ) : 0;
69 if (buffer && buf_len > len)
71 if (dll_directory) FILE_name_WtoA( dll_directory, -1, buffer, buf_len );
76 len++; /* for terminating null */
77 if (buffer) *buffer = 0;
79 RtlLeaveCriticalSection( &dlldir_section );
84 /****************************************************************************
85 * GetDllDirectoryW (KERNEL32.@)
87 DWORD WINAPI GetDllDirectoryW( DWORD buf_len, LPWSTR buffer )
91 RtlEnterCriticalSection( &dlldir_section );
92 len = dll_directory ? strlenW( dll_directory ) : 0;
93 if (buffer && buf_len > len)
95 if (dll_directory) memcpy( buffer, dll_directory, (len + 1) * sizeof(WCHAR) );
100 len++; /* for terminating null */
101 if (buffer) *buffer = 0;
103 RtlLeaveCriticalSection( &dlldir_section );
108 /****************************************************************************
109 * SetDllDirectoryA (KERNEL32.@)
111 BOOL WINAPI SetDllDirectoryA( LPCSTR dir )
116 if (!(dirW = FILE_name_AtoW( dir, TRUE ))) return FALSE;
117 ret = SetDllDirectoryW( dirW );
118 HeapFree( GetProcessHeap(), 0, dirW );
123 /****************************************************************************
124 * SetDllDirectoryW (KERNEL32.@)
126 BOOL WINAPI SetDllDirectoryW( LPCWSTR dir )
128 WCHAR *newdir = NULL;
132 DWORD len = (strlenW(dir) + 1) * sizeof(WCHAR);
133 if (!(newdir = HeapAlloc( GetProcessHeap(), 0, len )))
135 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
138 memcpy( newdir, dir, len );
141 RtlEnterCriticalSection( &dlldir_section );
142 HeapFree( GetProcessHeap(), 0, dll_directory );
143 dll_directory = newdir;
144 RtlLeaveCriticalSection( &dlldir_section );
149 /****************************************************************************
150 * DisableThreadLibraryCalls (KERNEL32.@)
152 * Inform the module loader that thread notifications are not required for a dll.
155 * hModule [I] Module handle to skip calls for
158 * Success: TRUE. Thread attach and detach notifications will not be sent
160 * Failure: FALSE. Use GetLastError() to determine the cause.
163 * This is typically called from the dll entry point of a dll during process
164 * attachment, for dlls that do not need to process thread notifications.
166 BOOL WINAPI DisableThreadLibraryCalls( HMODULE hModule )
168 NTSTATUS nts = LdrDisableThreadCalloutsForDll( hModule );
169 if (nts == STATUS_SUCCESS) return TRUE;
171 SetLastError( RtlNtStatusToDosError( nts ) );
176 /* Check whether a file is an OS/2 or a very old Windows executable
177 * by testing on import of KERNEL.
179 * FIXME: is reading the module imports the only way of discerning
180 * old Windows binaries from OS/2 ones ? At least it seems so...
182 static DWORD MODULE_Decide_OS2_OldWin(HANDLE hfile, const IMAGE_DOS_HEADER *mz, const IMAGE_OS2_HEADER *ne)
184 DWORD currpos = SetFilePointer( hfile, 0, NULL, SEEK_CUR);
185 DWORD ret = BINARY_OS216;
186 LPWORD modtab = NULL;
187 LPSTR nametab = NULL;
191 /* read modref table */
192 if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_modtab, NULL, SEEK_SET ) == -1)
193 || (!(modtab = HeapAlloc( GetProcessHeap(), 0, ne->ne_cmod*sizeof(WORD))))
194 || (!(ReadFile(hfile, modtab, ne->ne_cmod*sizeof(WORD), &len, NULL)))
195 || (len != ne->ne_cmod*sizeof(WORD)) )
198 /* read imported names table */
199 if ( (SetFilePointer( hfile, mz->e_lfanew + ne->ne_imptab, NULL, SEEK_SET ) == -1)
200 || (!(nametab = HeapAlloc( GetProcessHeap(), 0, ne->ne_enttab - ne->ne_imptab)))
201 || (!(ReadFile(hfile, nametab, ne->ne_enttab - ne->ne_imptab, &len, NULL)))
202 || (len != ne->ne_enttab - ne->ne_imptab) )
205 for (i=0; i < ne->ne_cmod; i++)
207 LPSTR module = &nametab[modtab[i]];
208 TRACE("modref: %.*s\n", module[0], &module[1]);
209 if (!(strncmp(&module[1], "KERNEL", module[0])))
210 { /* very old Windows file */
211 MESSAGE("This seems to be a very old (pre-3.0) Windows executable. Expect crashes, especially if this is a real-mode binary !\n");
218 ERR("Hmm, an error occurred. Is this binary file broken?\n");
221 HeapFree( GetProcessHeap(), 0, modtab);
222 HeapFree( GetProcessHeap(), 0, nametab);
223 SetFilePointer( hfile, currpos, NULL, SEEK_SET); /* restore filepos */
227 /***********************************************************************
228 * MODULE_GetBinaryType
230 void MODULE_get_binary_info( HANDLE hfile, struct binary_info *info )
236 unsigned char magic[4];
239 unsigned char version;
240 unsigned char ignored[9];
242 unsigned short machine;
247 unsigned int cputype;
248 unsigned int cpusubtype;
249 unsigned int filetype;
256 memset( info, 0, sizeof(*info) );
258 /* Seek to the start of the file and read the header information. */
259 if (SetFilePointer( hfile, 0, NULL, SEEK_SET ) == -1) return;
260 if (!ReadFile( hfile, &header, sizeof(header), &len, NULL ) || len != sizeof(header)) return;
262 if (!memcmp( header.elf.magic, "\177ELF", 4 ))
264 if (header.elf.class == 2) info->flags |= BINARY_FLAG_64BIT;
265 /* FIXME: we don't bother to check byte order, architecture, etc. */
266 switch(header.elf.type)
268 case 2: info->type = BINARY_UNIX_EXE; break;
269 case 3: info->type = BINARY_UNIX_LIB; break;
272 /* Mach-o File with Endian set to Big Endian or Little Endian */
273 else if (header.macho.magic == 0xfeedface || header.macho.magic == 0xcefaedfe)
275 if ((header.macho.cputype >> 24) == 1) info->flags |= BINARY_FLAG_64BIT;
276 switch(header.macho.filetype)
278 case 2: info->type = BINARY_UNIX_EXE; break;
279 case 8: info->type = BINARY_UNIX_LIB; break;
282 /* Not ELF, try DOS */
283 else if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
287 IMAGE_OS2_HEADER os2;
288 IMAGE_NT_HEADERS32 nt;
291 /* We do have a DOS image so we will now try to seek into
292 * the file by the amount indicated by the field
293 * "Offset to extended header" and read in the
294 * "magic" field information at that location.
295 * This will tell us if there is more header information
298 info->type = BINARY_DOS;
299 if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1) return;
300 if (!ReadFile( hfile, &ext_header, sizeof(ext_header), &len, NULL ) || len < 4) return;
302 /* Reading the magic field succeeded so
303 * we will try to determine what type it is.
305 if (!memcmp( &ext_header.nt.Signature, "PE\0\0", 4 ))
307 if (len >= sizeof(ext_header.nt.FileHeader))
309 info->type = BINARY_PE;
310 if (ext_header.nt.FileHeader.Characteristics & IMAGE_FILE_DLL)
311 info->flags |= BINARY_FLAG_DLL;
312 if (len < sizeof(ext_header.nt)) /* clear remaining part of header if missing */
313 memset( (char *)&ext_header.nt + len, 0, sizeof(ext_header.nt) - len );
314 switch (ext_header.nt.OptionalHeader.Magic)
316 case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
317 info->res_start = (void *)(ULONG_PTR)ext_header.nt.OptionalHeader.ImageBase;
318 info->res_end = (void *)((ULONG_PTR)ext_header.nt.OptionalHeader.ImageBase +
319 ext_header.nt.OptionalHeader.SizeOfImage);
321 case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
322 info->flags |= BINARY_FLAG_64BIT;
327 else if (!memcmp( &ext_header.os2.ne_magic, "NE", 2 ))
329 /* This is a Windows executable (NE) header. This can
330 * mean either a 16-bit OS/2 or a 16-bit Windows or even a
331 * DOS program (running under a DOS extender). To decide
332 * which, we'll have to read the NE header.
334 if (len >= sizeof(ext_header.os2))
336 if (ext_header.os2.ne_flags & NE_FFLAGS_LIBMODULE) info->flags |= BINARY_FLAG_DLL;
337 switch ( ext_header.os2.ne_exetyp )
339 case 1: info->type = BINARY_OS216; break; /* OS/2 */
340 case 2: info->type = BINARY_WIN16; break; /* Windows */
341 case 3: info->type = BINARY_DOS; break; /* European MS-DOS 4.x */
342 case 4: info->type = BINARY_WIN16; break; /* Windows 386; FIXME: is this 32bit??? */
343 case 5: info->type = BINARY_DOS; break; /* BOSS, Borland Operating System Services */
344 /* other types, e.g. 0 is: "unknown" */
345 default: info->type = MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ext_header.os2); break;
352 /***********************************************************************
353 * GetBinaryTypeW [KERNEL32.@]
355 * Determine whether a file is executable, and if so, what kind.
358 * lpApplicationName [I] Path of the file to check
359 * lpBinaryType [O] Destination for the binary type
362 * TRUE, if the file is an executable, in which case lpBinaryType is set.
363 * FALSE, if the file is not an executable or if the function fails.
366 * The type of executable is a property that determines which subsystem an
367 * executable file runs under. lpBinaryType can be set to one of the following
369 * SCS_32BIT_BINARY: A Win32 based application
370 * SCS_DOS_BINARY: An MS-Dos based application
371 * SCS_WOW_BINARY: A Win16 based application
372 * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
373 * SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
374 * SCS_OS216_BINARY: A 16bit OS/2 based application
376 * To find the binary type, this function reads in the files header information.
377 * If extended header information is not present it will assume that the file
378 * is a DOS executable. If extended header information is present it will
379 * determine if the file is a 16 or 32 bit Windows executable by checking the
380 * flags in the header.
382 * ".com" and ".pif" files are only recognized by their file name extension,
383 * as per native Windows.
385 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
389 struct binary_info binary_info;
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 MODULE_get_binary_info( hfile, &binary_info );
408 switch (binary_info.type)
412 static const WCHAR comW[] = { '.','C','O','M',0 };
413 static const WCHAR pifW[] = { '.','P','I','F',0 };
416 /* try to determine from file name */
417 ptr = strrchrW( lpApplicationName, '.' );
419 if (!strcmpiW( ptr, comW ))
421 *lpBinaryType = SCS_DOS_BINARY;
424 else if (!strcmpiW( ptr, pifW ))
426 *lpBinaryType = SCS_PIF_BINARY;
432 *lpBinaryType = (binary_info.flags & BINARY_FLAG_64BIT) ? SCS_64BIT_BINARY : 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 * See GetBinaryTypeW.
463 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
465 ANSI_STRING app_nameA;
468 TRACE("%s\n", debugstr_a(lpApplicationName));
472 if ( lpApplicationName == NULL || lpBinaryType == NULL )
475 RtlInitAnsiString(&app_nameA, lpApplicationName);
476 status = RtlAnsiStringToUnicodeString(&NtCurrentTeb()->StaticUnicodeString,
479 return GetBinaryTypeW(NtCurrentTeb()->StaticUnicodeString.Buffer, lpBinaryType);
481 SetLastError(RtlNtStatusToDosError(status));
485 /***********************************************************************
486 * GetModuleHandleExA (KERNEL32.@)
488 BOOL WINAPI GetModuleHandleExA( DWORD flags, LPCSTR name, HMODULE *module )
492 if (!name || (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS))
493 return GetModuleHandleExW( flags, (LPCWSTR)name, module );
495 if (!(nameW = FILE_name_AtoW( name, FALSE ))) return FALSE;
496 return GetModuleHandleExW( flags, nameW, module );
499 /***********************************************************************
500 * GetModuleHandleExW (KERNEL32.@)
502 BOOL WINAPI GetModuleHandleExW( DWORD flags, LPCWSTR name, HMODULE *module )
504 NTSTATUS status = STATUS_SUCCESS;
508 /* if we are messing with the refcount, grab the loader lock */
509 if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
510 !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
511 LdrLockLoaderLock( 0, NULL, &magic );
515 ret = NtCurrentTeb()->Peb->ImageBaseAddress;
517 else if (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS)
520 if (!(ret = RtlPcToFileHeader( (void *)name, &dummy ))) status = STATUS_DLL_NOT_FOUND;
525 RtlInitUnicodeString( &wstr, name );
526 status = LdrGetDllHandle( NULL, 0, &wstr, &ret );
529 if (status == STATUS_SUCCESS)
531 if (flags & GET_MODULE_HANDLE_EX_FLAG_PIN)
532 FIXME( "should pin refcount for %p\n", ret );
533 else if (!(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
534 LdrAddRefDll( 0, ret );
536 else SetLastError( RtlNtStatusToDosError( status ) );
538 if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
539 !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
540 LdrUnlockLoaderLock( 0, magic );
542 if (module) *module = ret;
543 return (status == STATUS_SUCCESS);
546 /***********************************************************************
547 * GetModuleHandleA (KERNEL32.@)
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.@)
583 * Get the file name of a loaded module from its handle.
586 * Success: The length of the file name, excluding the terminating NUL.
587 * Failure: 0. Use GetLastError() to determine the cause.
590 * This function always returns the long path of hModule (as opposed to
591 * GetModuleFileName16() which returns short paths when the modules version
593 * The function doesn't write a terminating '\0' if the buffer is too
596 DWORD WINAPI GetModuleFileNameA(
597 HMODULE hModule, /* [in] Module handle (32 bit) */
598 LPSTR lpFileName, /* [out] Destination for file name */
599 DWORD size ) /* [in] Size of lpFileName in characters */
601 LPWSTR filenameW = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) );
606 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
609 if ((len = GetModuleFileNameW( hModule, filenameW, size )))
611 len = FILE_name_WtoA( filenameW, len, lpFileName, size );
613 lpFileName[len] = '\0';
615 SetLastError( ERROR_INSUFFICIENT_BUFFER );
617 HeapFree( GetProcessHeap(), 0, filenameW );
621 /***********************************************************************
622 * GetModuleFileNameW (KERNEL32.@)
624 * Unicode version of GetModuleFileNameA.
626 DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size )
628 ULONG magic, len = 0;
631 WIN16_SUBSYSTEM_TIB *win16_tib;
633 if (!hModule && ((win16_tib = NtCurrentTeb()->Tib.SubSystemTib)) && win16_tib->exe_name)
635 len = min(size, win16_tib->exe_name->Length / sizeof(WCHAR));
636 memcpy( lpFileName, win16_tib->exe_name->Buffer, len * sizeof(WCHAR) );
637 if (len < size) lpFileName[len] = '\0';
641 LdrLockLoaderLock( 0, NULL, &magic );
643 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
644 nts = LdrFindEntryForAddress( hModule, &pldr );
645 if (nts == STATUS_SUCCESS)
647 len = min(size, pldr->FullDllName.Length / sizeof(WCHAR));
648 memcpy(lpFileName, pldr->FullDllName.Buffer, len * sizeof(WCHAR));
650 lpFileName[len] = '\0';
652 SetLastError( ERROR_INSUFFICIENT_BUFFER );
654 else SetLastError( RtlNtStatusToDosError( nts ) );
656 LdrUnlockLoaderLock( 0, magic );
658 TRACE( "%s\n", debugstr_wn(lpFileName, len) );
663 /***********************************************************************
664 * get_dll_system_path
666 static const WCHAR *get_dll_system_path(void)
668 static WCHAR *cached_path;
675 len += 2 * GetSystemDirectoryW( NULL, 0 );
676 len += GetWindowsDirectoryW( NULL, 0 );
677 p = path = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
680 GetSystemDirectoryW( p, path + len - p);
682 /* if system directory ends in "32" add 16-bit version too */
683 if (p[-2] == '3' && p[-1] == '2')
686 GetSystemDirectoryW( p, path + len - p);
690 GetWindowsDirectoryW( p, path + len - p);
696 /******************************************************************
697 * get_module_path_end
699 * Returns the end of the directory component of the module path.
701 static inline const WCHAR *get_module_path_end(const WCHAR *module)
704 const WCHAR *mod_end = module;
705 if (!module) return mod_end;
707 if ((p = strrchrW( mod_end, '\\' ))) mod_end = p;
708 if ((p = strrchrW( mod_end, '/' ))) mod_end = p;
709 if (mod_end == module + 2 && module[1] == ':') mod_end++;
710 if (mod_end == module && module[0] && module[1] == ':') mod_end += 2;
715 /******************************************************************
716 * MODULE_get_dll_load_path
718 * Compute the load path to use for a given dll.
719 * Returned pointer must be freed by caller.
721 WCHAR *MODULE_get_dll_load_path( LPCWSTR module )
723 static const WCHAR pathW[] = {'P','A','T','H',0};
725 const WCHAR *system_path = get_dll_system_path();
726 const WCHAR *mod_end = NULL;
727 UNICODE_STRING name, value;
729 int len = 0, path_len = 0;
731 /* adjust length for module name */
734 mod_end = get_module_path_end( module );
735 /* if module is NULL or doesn't contain a path, fall back to directory
736 * process was loaded from */
737 if (module == mod_end)
739 module = NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer;
740 mod_end = get_module_path_end( module );
742 len += (mod_end - module) + 1;
744 len += strlenW( system_path ) + 2;
746 /* get the PATH variable */
748 RtlInitUnicodeString( &name, pathW );
750 value.MaximumLength = 0;
752 if (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
753 path_len = value.Length;
755 RtlEnterCriticalSection( &dlldir_section );
756 if (dll_directory) len += strlenW(dll_directory) + 1;
757 if ((p = ret = HeapAlloc( GetProcessHeap(), 0, path_len + len * sizeof(WCHAR) )))
761 memcpy( ret, module, (mod_end - module) * sizeof(WCHAR) );
762 p += (mod_end - module);
767 strcpyW( p, dll_directory );
772 RtlLeaveCriticalSection( &dlldir_section );
773 if (!ret) return NULL;
775 strcpyW( p, system_path );
779 value.MaximumLength = path_len;
781 while (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
785 /* grow the buffer and retry */
786 path_len = value.Length;
787 if (!(new_ptr = HeapReAlloc( GetProcessHeap(), 0, ret, path_len + len * sizeof(WCHAR) )))
789 HeapFree( GetProcessHeap(), 0, ret );
792 value.Buffer = new_ptr + (value.Buffer - ret);
793 value.MaximumLength = path_len;
796 value.Buffer[value.Length / sizeof(WCHAR)] = 0;
801 /******************************************************************
802 * load_library_as_datafile
804 static BOOL load_library_as_datafile( LPCWSTR name, HMODULE* hmod)
806 static const WCHAR dotDLL[] = {'.','d','l','l',0};
808 WCHAR filenameW[MAX_PATH];
809 HANDLE hFile = INVALID_HANDLE_VALUE;
815 if (SearchPathW( NULL, name, dotDLL, sizeof(filenameW) / sizeof(filenameW[0]),
818 hFile = CreateFileW( filenameW, GENERIC_READ, FILE_SHARE_READ,
819 NULL, OPEN_EXISTING, 0, 0 );
821 if (hFile == INVALID_HANDLE_VALUE) return FALSE;
823 mapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
824 CloseHandle( hFile );
825 if (!mapping) return FALSE;
827 module = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
828 CloseHandle( mapping );
829 if (!module) return FALSE;
831 /* make sure it's a valid PE file */
832 if (!RtlImageNtHeader(module))
834 UnmapViewOfFile( module );
837 *hmod = (HMODULE)((char *)module + 1); /* set low bit of handle to indicate datafile module */
842 /******************************************************************
845 * Helper for LoadLibraryExA/W.
847 static HMODULE load_library( const UNICODE_STRING *libname, DWORD flags )
853 load_path = MODULE_get_dll_load_path( flags & LOAD_WITH_ALTERED_SEARCH_PATH ? libname->Buffer : NULL );
855 if (flags & LOAD_LIBRARY_AS_DATAFILE)
859 LdrLockLoaderLock( 0, NULL, &magic );
860 if (!(nts = LdrGetDllHandle( load_path, flags, libname, &hModule )))
862 LdrAddRefDll( 0, hModule );
863 LdrUnlockLoaderLock( 0, magic );
866 LdrUnlockLoaderLock( 0, magic );
868 /* The method in load_library_as_datafile allows searching for the
869 * 'native' libraries only
871 if (load_library_as_datafile( libname->Buffer, &hModule )) goto done;
872 flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
873 /* Fallback to normal behaviour */
876 nts = LdrLoadDll( load_path, flags, libname, &hModule );
877 if (nts != STATUS_SUCCESS)
880 SetLastError( RtlNtStatusToDosError( nts ) );
883 HeapFree( GetProcessHeap(), 0, load_path );
888 /******************************************************************
889 * LoadLibraryExA (KERNEL32.@)
891 * Load a dll file into the process address space.
894 * libname [I] Name of the file to load
895 * hfile [I] Reserved, must be 0.
896 * flags [I] Flags for loading the dll
899 * Success: A handle to the loaded dll.
900 * Failure: A NULL handle. Use GetLastError() to determine the cause.
903 * The HFILE parameter is not used and marked reserved in the SDK. I can
904 * only guess that it should force a file to be mapped, but I rather
905 * ignore the parameter because it would be extremely difficult to
906 * integrate this with different types of module representations.
908 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
912 if (!(libnameW = FILE_name_AtoW( libname, FALSE ))) return 0;
913 return LoadLibraryExW( libnameW, hfile, flags );
916 /***********************************************************************
917 * LoadLibraryExW (KERNEL32.@)
919 * Unicode version of LoadLibraryExA.
921 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryExW(LPCWSTR libnameW, HANDLE hfile, DWORD flags)
928 SetLastError(ERROR_INVALID_PARAMETER);
931 RtlInitUnicodeString( &wstr, libnameW );
932 if (wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] != ' ')
933 return load_library( &wstr, flags );
935 /* Library name has trailing spaces */
936 RtlCreateUnicodeString( &wstr, libnameW );
937 while (wstr.Length > sizeof(WCHAR) &&
938 wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] == ' ')
940 wstr.Length -= sizeof(WCHAR);
942 wstr.Buffer[wstr.Length/sizeof(WCHAR)] = '\0';
943 res = load_library( &wstr, flags );
944 RtlFreeUnicodeString( &wstr );
948 /***********************************************************************
949 * LoadLibraryA (KERNEL32.@)
951 * Load a dll file into the process address space.
954 * libname [I] Name of the file to load
957 * Success: A handle to the loaded dll.
958 * Failure: A NULL handle. Use GetLastError() to determine the cause.
961 * See LoadLibraryExA().
963 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryA(LPCSTR libname)
965 return LoadLibraryExA(libname, 0, 0);
968 /***********************************************************************
969 * LoadLibraryW (KERNEL32.@)
971 * Unicode version of LoadLibraryA.
973 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryW(LPCWSTR libnameW)
975 return LoadLibraryExW(libnameW, 0, 0);
978 /***********************************************************************
979 * FreeLibrary (KERNEL32.@)
981 * Free a dll loaded into the process address space.
984 * hLibModule [I] Handle to the dll returned by LoadLibraryA().
987 * Success: TRUE. The dll is removed if it is not still in use.
988 * Failure: FALSE. Use GetLastError() to determine the cause.
990 BOOL WINAPI DECLSPEC_HOTPATCH FreeLibrary(HINSTANCE hLibModule)
997 SetLastError( ERROR_INVALID_HANDLE );
1001 if ((ULONG_PTR)hLibModule & 1)
1003 /* this is a LOAD_LIBRARY_AS_DATAFILE module */
1004 char *ptr = (char *)hLibModule - 1;
1005 UnmapViewOfFile( ptr );
1009 if ((nts = LdrUnloadDll( hLibModule )) == STATUS_SUCCESS) retv = TRUE;
1010 else SetLastError( RtlNtStatusToDosError( nts ) );
1015 /***********************************************************************
1016 * GetProcAddress (KERNEL32.@)
1018 * Find the address of an exported symbol in a loaded dll.
1021 * hModule [I] Handle to the dll returned by LoadLibraryA().
1022 * function [I] Name of the symbol, or an integer ordinal number < 16384
1025 * Success: A pointer to the symbol in the process address space.
1026 * Failure: NULL. Use GetLastError() to determine the cause.
1028 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
1033 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
1035 if (HIWORD(function))
1039 RtlInitAnsiString( &str, function );
1040 nts = LdrGetProcedureAddress( hModule, &str, 0, (void**)&fp );
1043 nts = LdrGetProcedureAddress( hModule, NULL, LOWORD(function), (void**)&fp );
1044 if (nts != STATUS_SUCCESS)
1046 SetLastError( RtlNtStatusToDosError( nts ) );
1052 /***********************************************************************
1053 * DelayLoadFailureHook (KERNEL32.@)
1055 FARPROC WINAPI DelayLoadFailureHook( LPCSTR name, LPCSTR function )
1059 if ((ULONG_PTR)function >> 16)
1060 ERR( "failed to delay load %s.%s\n", name, function );
1062 ERR( "failed to delay load %s.%u\n", name, LOWORD(function) );
1063 args[0] = (ULONG_PTR)name;
1064 args[1] = (ULONG_PTR)function;
1065 RaiseException( EXCEPTION_WINE_STUB, EH_NONCONTINUABLE, 2, args );
1072 /***********************************************************************
1073 * __wine_dll_register_16 (KERNEL32.@)
1077 void __wine_dll_register_16( const IMAGE_DOS_HEADER *header, const char *file_name )
1079 ERR( "loading old style 16-bit dll %s no longer supported\n", file_name );
1083 /***********************************************************************
1084 * __wine_dll_unregister_16 (KERNEL32.@)
1088 void __wine_dll_unregister_16( const IMAGE_DOS_HEADER *header )