winfsp/opt/cygfuse/cygfuse.cpp

123 lines
3.8 KiB
C++

/**
* @file cygfuse/cygfuse.cpp
*
* @copyright 2015-2016 Bill Zissimopoulos
*/
/*
* This file is part of WinFsp.
*
* You can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License version 3 as published by the
* Free Software Foundation.
*
* Licensees holding a valid commercial license may use this file in
* accordance with the commercial license agreement provided with the
* software.
*/
#include <windows.h>
#undef _WIN32
#undef _WIN64
static HANDLE cygfuse_init_winfsp();
static HANDLE cygfuse_init_fail(int err);
static inline void cygfuse_init()
{
static HANDLE Handle = cygfuse_init_winfsp();
}
#define FSP_FUSE_API static
#define FSP_FUSE_API_NAME(api) (* pfn_ ## api)
#define FSP_FUSE_API_CALL(api) (cygfuse_init(), pfn_ ## api)
#define FSP_FUSE_SYM(proto, ...) __attribute__ ((visibility("default"))) proto { __VA_ARGS__ }
#include <fuse_common.h>
#include <fuse.h>
#include <fuse_opt.h>
#if defined(__LP64__)
#define CYGFUSE_WINFSP_NAME "winfsp-x64.dll"
#else
#define CYGFUSE_WINFSP_NAME "winfsp-x86.dll"
#endif
#define CYGFUSE_WINFSP_PATH "bin\\" CYGFUSE_WINFSP_NAME
#define CYGFUSE_API_GET(h, n) \
if (0 == (*(FARPROC *)&(pfn_ ## n) = GetProcAddress((HMODULE)h, #n)))\
return cygfuse_init_fail(ERROR_PROC_NOT_FOUND);
static HANDLE cygfuse_init_fail(int err)
{
//RaiseException(ERROR_SEVERITY_ERROR | (109/*FACILITY_VISUALCPP*/ << 16) | err, 0, 0, 0);
abort();
return 0;
}
static HANDLE cygfuse_init_winfsp()
{
HANDLE Handle;
Handle = LoadLibraryW(L"" CYGFUSE_WINFSP_NAME);
if (0 == Handle)
{
HKEY RegKey;
DWORD RegResult, RegType;
WCHAR Path[MAX_PATH];
DWORD Size;
Size = sizeof(Path);
if (ERROR_SUCCESS == (RegResult = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
L"Software\\WinFsp", 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY, &RegKey)))
{
RegResult = RegQueryValueExW(RegKey, L"InstallDir", 0, &RegType, (PBYTE)Path, &Size);
RegCloseKey(RegKey);
}
if (ERROR_SUCCESS != RegResult)
return cygfuse_init_fail(ERROR_MOD_NOT_FOUND);
Size /= sizeof(WCHAR);
if (Size >= MAX_PATH)
Size = MAX_PATH - 1;
Path[Size] = L'\0';
Size = lstrlenW(Path);
if (Size * sizeof(WCHAR) + sizeof L"" CYGFUSE_WINFSP_PATH > MAX_PATH * sizeof(WCHAR))
return cygfuse_init_fail(ERROR_MOD_NOT_FOUND);
memcpy(Path + Size, L"" CYGFUSE_WINFSP_PATH, sizeof L"" CYGFUSE_WINFSP_PATH);
Handle = LoadLibraryW(Path);
if (0 == Handle)
return cygfuse_init_fail(ERROR_MOD_NOT_FOUND);
}
/* winfsp_fuse.h */
CYGFUSE_API_GET(Handle, fsp_fuse_signal_handler);
/* fuse_common.h */
CYGFUSE_API_GET(Handle, fsp_fuse_version);
CYGFUSE_API_GET(Handle, fsp_fuse_mount);
CYGFUSE_API_GET(Handle, fsp_fuse_unmount);
CYGFUSE_API_GET(Handle, fsp_fuse_parse_cmdline);
CYGFUSE_API_GET(Handle, fsp_fuse_ntstatus_from_errno);
/* fuse.h */
CYGFUSE_API_GET(Handle, fsp_fuse_main_real);
CYGFUSE_API_GET(Handle, fsp_fuse_is_lib_option);
CYGFUSE_API_GET(Handle, fsp_fuse_new);
CYGFUSE_API_GET(Handle, fsp_fuse_destroy);
CYGFUSE_API_GET(Handle, fsp_fuse_loop);
CYGFUSE_API_GET(Handle, fsp_fuse_loop_mt);
CYGFUSE_API_GET(Handle, fsp_fuse_exit);
CYGFUSE_API_GET(Handle, fsp_fuse_get_context);
/* fuse_opt.h */
CYGFUSE_API_GET(Handle, fsp_fuse_opt_parse);
CYGFUSE_API_GET(Handle, fsp_fuse_opt_add_arg);
CYGFUSE_API_GET(Handle, fsp_fuse_opt_insert_arg);
CYGFUSE_API_GET(Handle, fsp_fuse_opt_free_args);
CYGFUSE_API_GET(Handle, fsp_fuse_opt_add_opt);
CYGFUSE_API_GET(Handle, fsp_fuse_opt_add_opt_escaped);
CYGFUSE_API_GET(Handle, fsp_fuse_opt_match);
return Handle;
}