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];
238 unsigned char version;
239 unsigned char ignored[9];
241 unsigned short machine;
246 unsigned int cputype;
247 unsigned int cpusubtype;
248 unsigned int 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 DWORD flags = (header.elf.class == 2) ? BINARY_FLAG_64BIT : 0;
264 /* FIXME: we don't bother to check byte order, architecture, etc. */
265 switch(header.elf.type)
267 case 2: return flags | BINARY_UNIX_EXE;
268 case 3: return flags | BINARY_UNIX_LIB;
270 return BINARY_UNKNOWN;
273 /* Mach-o File with Endian set to Big Endian or Little Endian */
274 if (header.macho.magic == 0xfeedface || header.macho.magic == 0xcefaedfe)
276 DWORD flags = (header.macho.cputype >> 24) == 1 ? BINARY_FLAG_64BIT : 0;
277 switch(header.macho.filetype)
279 case 2: return flags | BINARY_UNIX_EXE;
280 case 8: return flags | BINARY_UNIX_LIB;
282 return BINARY_UNKNOWN;
285 /* Not ELF, try DOS */
287 if (header.mz.e_magic == IMAGE_DOS_SIGNATURE)
291 IMAGE_OS2_HEADER os2;
292 IMAGE_NT_HEADERS32 nt;
295 /* We do have a DOS image so we will now try to seek into
296 * the file by the amount indicated by the field
297 * "Offset to extended header" and read in the
298 * "magic" field information at that location.
299 * This will tell us if there is more header information
302 if (SetFilePointer( hfile, header.mz.e_lfanew, NULL, SEEK_SET ) == -1)
304 if (!ReadFile( hfile, &ext_header, sizeof(ext_header), &len, NULL ) || len < 4)
307 /* Reading the magic field succeeded so
308 * we will try to determine what type it is.
310 if (!memcmp( &ext_header.nt.Signature, "PE\0\0", 4 ))
312 if (len >= sizeof(ext_header.nt.FileHeader))
314 DWORD ret = BINARY_PE;
315 if (ext_header.nt.FileHeader.Characteristics & IMAGE_FILE_DLL) ret |= BINARY_FLAG_DLL;
316 if (len < sizeof(ext_header.nt)) /* clear remaining part of header if missing */
317 memset( (char *)&ext_header.nt + len, 0, sizeof(ext_header.nt) - len );
318 switch (ext_header.nt.OptionalHeader.Magic)
320 case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
321 if (res_start) *res_start = (void *)(ULONG_PTR)ext_header.nt.OptionalHeader.ImageBase;
322 if (res_end) *res_end = (void *)((ULONG_PTR)ext_header.nt.OptionalHeader.ImageBase +
323 ext_header.nt.OptionalHeader.SizeOfImage);
325 case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
326 if (res_start) *res_start = NULL;
327 if (res_end) *res_end = NULL;
328 return ret | BINARY_FLAG_64BIT;
334 if (!memcmp( &ext_header.os2.ne_magic, "NE", 2 ))
336 /* This is a Windows executable (NE) header. This can
337 * mean either a 16-bit OS/2 or a 16-bit Windows or even a
338 * DOS program (running under a DOS extender). To decide
339 * which, we'll have to read the NE header.
341 if (len >= sizeof(ext_header.os2))
343 DWORD flags = (ext_header.os2.ne_flags & NE_FFLAGS_LIBMODULE) ? BINARY_FLAG_DLL : 0;
344 switch ( ext_header.os2.ne_exetyp )
346 case 1: return flags | BINARY_OS216; /* OS/2 */
347 case 2: return flags | BINARY_WIN16; /* Windows */
348 case 3: return flags | BINARY_DOS; /* European MS-DOS 4.x */
349 case 4: return flags | BINARY_WIN16; /* Windows 386; FIXME: is this 32bit??? */
350 case 5: return flags | BINARY_DOS; /* BOSS, Borland Operating System Services */
351 /* other types, e.g. 0 is: "unknown" */
352 default: return flags | MODULE_Decide_OS2_OldWin(hfile, &header.mz, &ext_header.os2);
355 /* Couldn't read header, so abort. */
359 /* Unknown extended header, but this file is nonetheless DOS-executable. */
363 return BINARY_UNKNOWN;
366 /***********************************************************************
367 * GetBinaryTypeW [KERNEL32.@]
369 * Determine whether a file is executable, and if so, what kind.
372 * lpApplicationName [I] Path of the file to check
373 * lpBinaryType [O] Destination for the binary type
376 * TRUE, if the file is an executable, in which case lpBinaryType is set.
377 * FALSE, if the file is not an executable or if the function fails.
380 * The type of executable is a property that determines which subsystem an
381 * executable file runs under. lpBinaryType can be set to one of the following
383 * SCS_32BIT_BINARY: A Win32 based application
384 * SCS_DOS_BINARY: An MS-Dos based application
385 * SCS_WOW_BINARY: A Win16 based application
386 * SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
387 * SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
388 * SCS_OS216_BINARY: A 16bit OS/2 based application
390 * To find the binary type, this function reads in the files header information.
391 * If extended header information is not present it will assume that the file
392 * is a DOS executable. If extended header information is present it will
393 * determine if the file is a 16 or 32 bit Windows executable by checking the
394 * flags in the header.
396 * ".com" and ".pif" files are only recognized by their file name extension,
397 * as per native Windows.
399 BOOL WINAPI GetBinaryTypeW( LPCWSTR lpApplicationName, LPDWORD lpBinaryType )
405 TRACE("%s\n", debugstr_w(lpApplicationName) );
409 if ( lpApplicationName == NULL || lpBinaryType == NULL )
412 /* Open the file indicated by lpApplicationName for reading.
414 hfile = CreateFileW( lpApplicationName, GENERIC_READ, FILE_SHARE_READ,
415 NULL, OPEN_EXISTING, 0, 0 );
416 if ( hfile == INVALID_HANDLE_VALUE )
421 binary_type = MODULE_GetBinaryType( hfile, NULL, NULL );
422 switch (binary_type & BINARY_TYPE_MASK)
426 static const WCHAR comW[] = { '.','C','O','M',0 };
427 static const WCHAR pifW[] = { '.','P','I','F',0 };
430 /* try to determine from file name */
431 ptr = strrchrW( lpApplicationName, '.' );
433 if (!strcmpiW( ptr, comW ))
435 *lpBinaryType = SCS_DOS_BINARY;
438 else if (!strcmpiW( ptr, pifW ))
440 *lpBinaryType = SCS_PIF_BINARY;
446 *lpBinaryType = SCS_32BIT_BINARY;
450 *lpBinaryType = SCS_WOW_BINARY;
454 *lpBinaryType = SCS_OS216_BINARY;
458 *lpBinaryType = SCS_DOS_BINARY;
461 case BINARY_UNIX_EXE:
462 case BINARY_UNIX_LIB:
467 CloseHandle( hfile );
471 /***********************************************************************
472 * GetBinaryTypeA [KERNEL32.@]
473 * GetBinaryType [KERNEL32.@]
475 * See GetBinaryTypeW.
477 BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
479 ANSI_STRING app_nameA;
482 TRACE("%s\n", debugstr_a(lpApplicationName));
486 if ( lpApplicationName == NULL || lpBinaryType == NULL )
489 RtlInitAnsiString(&app_nameA, lpApplicationName);
490 status = RtlAnsiStringToUnicodeString(&NtCurrentTeb()->StaticUnicodeString,
493 return GetBinaryTypeW(NtCurrentTeb()->StaticUnicodeString.Buffer, lpBinaryType);
495 SetLastError(RtlNtStatusToDosError(status));
499 /***********************************************************************
500 * GetModuleHandleExA (KERNEL32.@)
502 BOOL WINAPI GetModuleHandleExA( DWORD flags, LPCSTR name, HMODULE *module )
506 if (!name || (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS))
507 return GetModuleHandleExW( flags, (LPCWSTR)name, module );
509 if (!(nameW = FILE_name_AtoW( name, FALSE ))) return FALSE;
510 return GetModuleHandleExW( flags, nameW, module );
513 /***********************************************************************
514 * GetModuleHandleExW (KERNEL32.@)
516 BOOL WINAPI GetModuleHandleExW( DWORD flags, LPCWSTR name, HMODULE *module )
518 NTSTATUS status = STATUS_SUCCESS;
522 /* if we are messing with the refcount, grab the loader lock */
523 if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
524 !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
525 LdrLockLoaderLock( 0, NULL, &magic );
529 ret = NtCurrentTeb()->Peb->ImageBaseAddress;
531 else if (flags & GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS)
534 if (!(ret = RtlPcToFileHeader( (void *)name, &dummy ))) status = STATUS_DLL_NOT_FOUND;
539 RtlInitUnicodeString( &wstr, name );
540 status = LdrGetDllHandle( NULL, 0, &wstr, &ret );
543 if (status == STATUS_SUCCESS)
545 if (flags & GET_MODULE_HANDLE_EX_FLAG_PIN)
546 FIXME( "should pin refcount for %p\n", ret );
547 else if (!(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
548 LdrAddRefDll( 0, ret );
550 else SetLastError( RtlNtStatusToDosError( status ) );
552 if ((flags & GET_MODULE_HANDLE_EX_FLAG_PIN) ||
553 !(flags & GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT))
554 LdrUnlockLoaderLock( 0, magic );
556 if (module) *module = ret;
557 return (status == STATUS_SUCCESS);
560 /***********************************************************************
561 * GetModuleHandleA (KERNEL32.@)
563 * Get the handle of a dll loaded into the process address space.
566 * module [I] Name of the dll
569 * Success: A handle to the loaded dll.
570 * Failure: A NULL handle. Use GetLastError() to determine the cause.
572 HMODULE WINAPI GetModuleHandleA(LPCSTR module)
576 if (!GetModuleHandleExA( GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, module, &ret )) ret = 0;
580 /***********************************************************************
581 * GetModuleHandleW (KERNEL32.@)
583 * Unicode version of GetModuleHandleA.
585 HMODULE WINAPI GetModuleHandleW(LPCWSTR module)
589 if (!GetModuleHandleExW( GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, module, &ret )) ret = 0;
594 /***********************************************************************
595 * GetModuleFileNameA (KERNEL32.@)
597 * Get the file name of a loaded module from its handle.
600 * Success: The length of the file name, excluding the terminating NUL.
601 * Failure: 0. Use GetLastError() to determine the cause.
604 * This function always returns the long path of hModule (as opposed to
605 * GetModuleFileName16() which returns short paths when the modules version
607 * The function doesn't write a terminating '\0' if the buffer is too
610 DWORD WINAPI GetModuleFileNameA(
611 HMODULE hModule, /* [in] Module handle (32 bit) */
612 LPSTR lpFileName, /* [out] Destination for file name */
613 DWORD size ) /* [in] Size of lpFileName in characters */
615 LPWSTR filenameW = HeapAlloc( GetProcessHeap(), 0, size * sizeof(WCHAR) );
620 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
623 if ((len = GetModuleFileNameW( hModule, filenameW, size )))
625 len = FILE_name_WtoA( filenameW, len, lpFileName, size );
627 lpFileName[len] = '\0';
629 SetLastError( ERROR_INSUFFICIENT_BUFFER );
631 HeapFree( GetProcessHeap(), 0, filenameW );
635 /***********************************************************************
636 * GetModuleFileNameW (KERNEL32.@)
638 * Unicode version of GetModuleFileNameA.
640 DWORD WINAPI GetModuleFileNameW( HMODULE hModule, LPWSTR lpFileName, DWORD size )
642 ULONG magic, len = 0;
645 WIN16_SUBSYSTEM_TIB *win16_tib;
647 if (!hModule && ((win16_tib = NtCurrentTeb()->Tib.SubSystemTib)) && win16_tib->exe_name)
649 len = min(size, win16_tib->exe_name->Length / sizeof(WCHAR));
650 memcpy( lpFileName, win16_tib->exe_name->Buffer, len * sizeof(WCHAR) );
651 if (len < size) lpFileName[len] = '\0';
655 LdrLockLoaderLock( 0, NULL, &magic );
657 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
658 nts = LdrFindEntryForAddress( hModule, &pldr );
659 if (nts == STATUS_SUCCESS)
661 len = min(size, pldr->FullDllName.Length / sizeof(WCHAR));
662 memcpy(lpFileName, pldr->FullDllName.Buffer, len * sizeof(WCHAR));
664 lpFileName[len] = '\0';
666 SetLastError( ERROR_INSUFFICIENT_BUFFER );
668 else SetLastError( RtlNtStatusToDosError( nts ) );
670 LdrUnlockLoaderLock( 0, magic );
672 TRACE( "%s\n", debugstr_wn(lpFileName, len) );
677 /***********************************************************************
678 * get_dll_system_path
680 static const WCHAR *get_dll_system_path(void)
682 static WCHAR *cached_path;
689 len += 2 * GetSystemDirectoryW( NULL, 0 );
690 len += GetWindowsDirectoryW( NULL, 0 );
691 p = path = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
694 GetSystemDirectoryW( p, path + len - p);
696 /* if system directory ends in "32" add 16-bit version too */
697 if (p[-2] == '3' && p[-1] == '2')
700 GetSystemDirectoryW( p, path + len - p);
704 GetWindowsDirectoryW( p, path + len - p);
710 /******************************************************************
711 * get_module_path_end
713 * Returns the end of the directory component of the module path.
715 static inline const WCHAR *get_module_path_end(const WCHAR *module)
718 const WCHAR *mod_end = module;
719 if (!module) return mod_end;
721 if ((p = strrchrW( mod_end, '\\' ))) mod_end = p;
722 if ((p = strrchrW( mod_end, '/' ))) mod_end = p;
723 if (mod_end == module + 2 && module[1] == ':') mod_end++;
724 if (mod_end == module && module[0] && module[1] == ':') mod_end += 2;
729 /******************************************************************
730 * MODULE_get_dll_load_path
732 * Compute the load path to use for a given dll.
733 * Returned pointer must be freed by caller.
735 WCHAR *MODULE_get_dll_load_path( LPCWSTR module )
737 static const WCHAR pathW[] = {'P','A','T','H',0};
739 const WCHAR *system_path = get_dll_system_path();
740 const WCHAR *mod_end = NULL;
741 UNICODE_STRING name, value;
743 int len = 0, path_len = 0;
745 /* adjust length for module name */
748 mod_end = get_module_path_end( module );
749 /* if module is NULL or doesn't contain a path, fall back to directory
750 * process was loaded from */
751 if (module == mod_end)
753 module = NtCurrentTeb()->Peb->ProcessParameters->ImagePathName.Buffer;
754 mod_end = get_module_path_end( module );
756 len += (mod_end - module) + 1;
758 len += strlenW( system_path ) + 2;
760 /* get the PATH variable */
762 RtlInitUnicodeString( &name, pathW );
764 value.MaximumLength = 0;
766 if (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
767 path_len = value.Length;
769 RtlEnterCriticalSection( &dlldir_section );
770 if (dll_directory) len += strlenW(dll_directory) + 1;
771 if ((p = ret = HeapAlloc( GetProcessHeap(), 0, path_len + len * sizeof(WCHAR) )))
775 memcpy( ret, module, (mod_end - module) * sizeof(WCHAR) );
776 p += (mod_end - module);
781 strcpyW( p, dll_directory );
786 RtlLeaveCriticalSection( &dlldir_section );
787 if (!ret) return NULL;
789 strcpyW( p, system_path );
793 value.MaximumLength = path_len;
795 while (RtlQueryEnvironmentVariable_U( NULL, &name, &value ) == STATUS_BUFFER_TOO_SMALL)
799 /* grow the buffer and retry */
800 path_len = value.Length;
801 if (!(new_ptr = HeapReAlloc( GetProcessHeap(), 0, ret, path_len + len * sizeof(WCHAR) )))
803 HeapFree( GetProcessHeap(), 0, ret );
806 value.Buffer = new_ptr + (value.Buffer - ret);
807 value.MaximumLength = path_len;
810 value.Buffer[value.Length / sizeof(WCHAR)] = 0;
815 /******************************************************************
816 * load_library_as_datafile
818 static BOOL load_library_as_datafile( LPCWSTR name, HMODULE* hmod)
820 static const WCHAR dotDLL[] = {'.','d','l','l',0};
822 WCHAR filenameW[MAX_PATH];
823 HANDLE hFile = INVALID_HANDLE_VALUE;
829 if (SearchPathW( NULL, name, dotDLL, sizeof(filenameW) / sizeof(filenameW[0]),
832 hFile = CreateFileW( filenameW, GENERIC_READ, FILE_SHARE_READ,
833 NULL, OPEN_EXISTING, 0, 0 );
835 if (hFile == INVALID_HANDLE_VALUE) return FALSE;
837 mapping = CreateFileMappingW( hFile, NULL, PAGE_READONLY, 0, 0, NULL );
838 CloseHandle( hFile );
839 if (!mapping) return FALSE;
841 module = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
842 CloseHandle( mapping );
843 if (!module) return FALSE;
845 /* make sure it's a valid PE file */
846 if (!RtlImageNtHeader(module))
848 UnmapViewOfFile( module );
851 *hmod = (HMODULE)((char *)module + 1); /* set low bit of handle to indicate datafile module */
856 /******************************************************************
859 * Helper for LoadLibraryExA/W.
861 static HMODULE load_library( const UNICODE_STRING *libname, DWORD flags )
867 load_path = MODULE_get_dll_load_path( flags & LOAD_WITH_ALTERED_SEARCH_PATH ? libname->Buffer : NULL );
869 if (flags & LOAD_LIBRARY_AS_DATAFILE)
873 LdrLockLoaderLock( 0, NULL, &magic );
874 if (!(nts = LdrGetDllHandle( load_path, flags, libname, &hModule )))
876 LdrAddRefDll( 0, hModule );
877 LdrUnlockLoaderLock( 0, magic );
880 LdrUnlockLoaderLock( 0, magic );
882 /* The method in load_library_as_datafile allows searching for the
883 * 'native' libraries only
885 if (load_library_as_datafile( libname->Buffer, &hModule )) goto done;
886 flags |= DONT_RESOLVE_DLL_REFERENCES; /* Just in case */
887 /* Fallback to normal behaviour */
890 nts = LdrLoadDll( load_path, flags, libname, &hModule );
891 if (nts != STATUS_SUCCESS)
894 SetLastError( RtlNtStatusToDosError( nts ) );
897 HeapFree( GetProcessHeap(), 0, load_path );
902 /******************************************************************
903 * LoadLibraryExA (KERNEL32.@)
905 * Load a dll file into the process address space.
908 * libname [I] Name of the file to load
909 * hfile [I] Reserved, must be 0.
910 * flags [I] Flags for loading the dll
913 * Success: A handle to the loaded dll.
914 * Failure: A NULL handle. Use GetLastError() to determine the cause.
917 * The HFILE parameter is not used and marked reserved in the SDK. I can
918 * only guess that it should force a file to be mapped, but I rather
919 * ignore the parameter because it would be extremely difficult to
920 * integrate this with different types of module representations.
922 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
926 if (!(libnameW = FILE_name_AtoW( libname, FALSE ))) return 0;
927 return LoadLibraryExW( libnameW, hfile, flags );
930 /***********************************************************************
931 * LoadLibraryExW (KERNEL32.@)
933 * Unicode version of LoadLibraryExA.
935 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryExW(LPCWSTR libnameW, HANDLE hfile, DWORD flags)
942 SetLastError(ERROR_INVALID_PARAMETER);
945 RtlInitUnicodeString( &wstr, libnameW );
946 if (wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] != ' ')
947 return load_library( &wstr, flags );
949 /* Library name has trailing spaces */
950 RtlCreateUnicodeString( &wstr, libnameW );
951 while (wstr.Length > sizeof(WCHAR) &&
952 wstr.Buffer[wstr.Length/sizeof(WCHAR) - 1] == ' ')
954 wstr.Length -= sizeof(WCHAR);
956 wstr.Buffer[wstr.Length/sizeof(WCHAR)] = '\0';
957 res = load_library( &wstr, flags );
958 RtlFreeUnicodeString( &wstr );
962 /***********************************************************************
963 * LoadLibraryA (KERNEL32.@)
965 * Load a dll file into the process address space.
968 * libname [I] Name of the file to load
971 * Success: A handle to the loaded dll.
972 * Failure: A NULL handle. Use GetLastError() to determine the cause.
975 * See LoadLibraryExA().
977 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryA(LPCSTR libname)
979 return LoadLibraryExA(libname, 0, 0);
982 /***********************************************************************
983 * LoadLibraryW (KERNEL32.@)
985 * Unicode version of LoadLibraryA.
987 HMODULE WINAPI DECLSPEC_HOTPATCH LoadLibraryW(LPCWSTR libnameW)
989 return LoadLibraryExW(libnameW, 0, 0);
992 /***********************************************************************
993 * FreeLibrary (KERNEL32.@)
995 * Free a dll loaded into the process address space.
998 * hLibModule [I] Handle to the dll returned by LoadLibraryA().
1001 * Success: TRUE. The dll is removed if it is not still in use.
1002 * Failure: FALSE. Use GetLastError() to determine the cause.
1004 BOOL WINAPI DECLSPEC_HOTPATCH FreeLibrary(HINSTANCE hLibModule)
1011 SetLastError( ERROR_INVALID_HANDLE );
1015 if ((ULONG_PTR)hLibModule & 1)
1017 /* this is a LOAD_LIBRARY_AS_DATAFILE module */
1018 char *ptr = (char *)hLibModule - 1;
1019 UnmapViewOfFile( ptr );
1023 if ((nts = LdrUnloadDll( hLibModule )) == STATUS_SUCCESS) retv = TRUE;
1024 else SetLastError( RtlNtStatusToDosError( nts ) );
1029 /***********************************************************************
1030 * GetProcAddress (KERNEL32.@)
1032 * Find the address of an exported symbol in a loaded dll.
1035 * hModule [I] Handle to the dll returned by LoadLibraryA().
1036 * function [I] Name of the symbol, or an integer ordinal number < 16384
1039 * Success: A pointer to the symbol in the process address space.
1040 * Failure: NULL. Use GetLastError() to determine the cause.
1042 FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
1047 if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
1049 if (HIWORD(function))
1053 RtlInitAnsiString( &str, function );
1054 nts = LdrGetProcedureAddress( hModule, &str, 0, (void**)&fp );
1057 nts = LdrGetProcedureAddress( hModule, NULL, LOWORD(function), (void**)&fp );
1058 if (nts != STATUS_SUCCESS)
1060 SetLastError( RtlNtStatusToDosError( nts ) );
1066 /***********************************************************************
1067 * DelayLoadFailureHook (KERNEL32.@)
1069 FARPROC WINAPI DelayLoadFailureHook( LPCSTR name, LPCSTR function )
1073 if ((ULONG_PTR)function >> 16)
1074 ERR( "failed to delay load %s.%s\n", name, function );
1076 ERR( "failed to delay load %s.%u\n", name, LOWORD(function) );
1077 args[0] = (ULONG_PTR)name;
1078 args[1] = (ULONG_PTR)function;
1079 RaiseException( EXCEPTION_WINE_STUB, EH_NONCONTINUABLE, 2, args );