62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* loadlib.h
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Copyright 2010, 2011 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _LOADLIB_H
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#define _LOADLIB_H
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#include <windows.h>
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#include <wchar.h>
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/* Load all system libs from the windows system directory by prepending the
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full path. This doesn't work for loadling cygwin1.dll. For this case,
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instead of prepending the path, make sure that the CWD is removed from
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the DLL search path, if possible (XP SP1++, Vista++). */
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static HMODULE _load_sys_library (const wchar_t *dll) __attribute__ ((used));
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static HMODULE
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_load_sys_library (const wchar_t *dll)
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{
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static BOOL (*set_dll_directory)(LPCWSTR);
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static WCHAR sysdir[MAX_PATH];
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static UINT sysdir_len;
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WCHAR dllpath[MAX_PATH];
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if (!sysdir_len)
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{
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sysdir_len = GetSystemDirectoryW (sysdir, MAX_PATH);
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sysdir[sysdir_len++] = L'\\';
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sysdir[sysdir_len] = L'\0';
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}
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if (!set_dll_directory)
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{
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HMODULE k32 = GetModuleHandleW (L"kernel32.dll");
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if (k32)
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set_dll_directory = (BOOL (*)(LPCWSTR))
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GetProcAddress (k32, "SetDllDirectoryW");
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if (!set_dll_directory)
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set_dll_directory = (BOOL (*)(LPCWSTR)) -1;
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else
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set_dll_directory (L"");
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}
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if (wcscmp (dll, L"cygwin1.dll") == 0)
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return LoadLibraryExW (L"cygwin1.dll", NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
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wcscpy (dllpath, sysdir);
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wcscpy (dllpath + sysdir_len, dll);
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return LoadLibraryExW (dllpath, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
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}
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#define LoadLibraryW(d) _load_sys_library(d)
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#define LoadLibraryA(d) _load_sys_library(L##d)
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#endif /* _LOADLIB_H */
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