git://sourceware.org / newlib-cygwin.git / blame
| Commit | Line | Data |
|---|---|---|
| 71d8f118 CV |
1 | /* loadlib.h |
| 2 | ||
| d7d8e7ce | 3 | Copyright 2010, 2011 Red Hat, Inc. |
| 71d8f118 CV |
4 | |
| 5 | This file is part of Cygwin. | |
| 6 | ||
| 7 | This software is a copyrighted work licensed under the terms of the | |
| 8 | Cygwin license. Please consult the file "CYGWIN_LICENSE" for | |
| 9 | details. */ | |
| 10 | ||
| 11 | #ifndef _LOADLIB_H | |
| 12 | #define _LOADLIB_H | |
| 13 | ||
| 14 | #include <windows.h> | |
| 15 | #include <wchar.h> | |
| 16 | ||
| 17 | /* Load all system libs from the windows system directory by prepending the | |
| 18 | full path. This doesn't work for loadling cygwin1.dll. For this case, | |
| 19 | instead of prepending the path, make sure that the CWD is removed from | |
| 20 | the DLL search path, if possible (XP SP1++, Vista++). */ | |
| d7d8e7ce CV |
21 | static HMODULE _load_sys_library (const wchar_t *dll) __attribute__ ((used)); |
| 22 | ||
| 71d8f118 CV |
23 | static HMODULE |
| 24 | _load_sys_library (const wchar_t *dll) | |
| 25 | { | |
| 26 | static BOOL (*set_dll_directory)(LPCWSTR); | |
| 27 | static WCHAR sysdir[MAX_PATH]; | |
| 28 | static UINT sysdir_len; | |
| 29 | ||
| 30 | WCHAR dllpath[MAX_PATH]; | |
| 31 | ||
| 32 | if (!sysdir_len) | |
| 33 | { | |
| 34 | sysdir_len = GetSystemDirectoryW (sysdir, MAX_PATH); | |
| 35 | sysdir[sysdir_len++] = L'\\'; | |
| 36 | sysdir[sysdir_len] = L'\0'; | |
| 37 | } | |
| 38 | if (!set_dll_directory) | |
| 39 | { | |
| 40 | HMODULE k32 = GetModuleHandleW (L"kernel32.dll"); | |
| 41 | if (k32) | |
| 42 | set_dll_directory = (BOOL (*)(LPCWSTR)) | |
| 43 | GetProcAddress (k32, "SetDllDirectoryW"); | |
| 44 | if (!set_dll_directory) | |
| 45 | set_dll_directory = (BOOL (*)(LPCWSTR)) -1; | |
| 46 | else | |
| 47 | set_dll_directory (L""); | |
| 48 | } | |
| 49 | ||
| 50 | if (wcscmp (dll, L"cygwin1.dll") == 0) | |
| 51 | return LoadLibraryExW (L"cygwin1.dll", NULL, LOAD_WITH_ALTERED_SEARCH_PATH); | |
| 52 | ||
| 53 | wcscpy (dllpath, sysdir); | |
| 54 | wcscpy (dllpath + sysdir_len, dll); | |
| 55 | return LoadLibraryExW (dllpath, NULL, LOAD_WITH_ALTERED_SEARCH_PATH); | |
| 56 | } | |
| 57 | ||
| 58 | #define LoadLibraryW(d) _load_sys_library(d) | |
| 59 | #define LoadLibraryA(d) _load_sys_library(L##d) | |
| 60 | ||
| 61 | #endif /* _LOADLIB_H */ |