huwcampbell.com
Reactos
1//
2// access.cpp
3//
4// Copyright (c) Microsoft Corporation. All rights reserved.
5//
6// The _access() and _access_s() functions, which test file accessibility.
7//
8#include <corecrt_internal.h>
9#include <io.h>
10#include <corecrt_internal_win32_buffer.h>
11
12// See _waccess_s for information about this function's behavior.
13extern "C" errno_t __cdecl _access_s(char const* const path, int const access_mode)
14{
15 if (path == nullptr) {
16 return _waccess_s(nullptr, access_mode);
17 }
18
19 __crt_internal_win32_buffer<wchar_t> wide_path;
20
21 errno_t const cvt = __acrt_mbs_to_wcs_cp(path, wide_path, __acrt_get_utf8_acp_compatibility_codepage());
22
23 if (cvt != 0) {
24 return -1;
25 }
26
27 return _waccess_s(wide_path.data(), access_mode);
28}
29
30// The same as _access_s, but transforms all errors into a -1 return value.
31extern "C" int __cdecl _access(char const* const path, int const access_mode)
32{
33 return _access_s(path, access_mode) == 0 ? 0 : -1;
34}