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1//
2// chmod.cpp
3//
4// Copyright (c) Microsoft Corporation. All rights reserved.
5//
6// The _chmod() function, which changes file attributes.
7//
8#include <corecrt_internal.h>
9#include <io.h>
10#include <sys/stat.h>
11#include <corecrt_internal_win32_buffer.h>
12
13// Changes the mode of a file. The only supported mode bit is _S_IWRITE, which
14// controls the user write (read-only) attribute of the file. Returns zero if
15// successful; returns -1 and sets errno and _doserrno on failure.
16extern "C" int __cdecl _chmod(char const* const path, int const mode)
17{
18 if (path == nullptr) {
19 return _wchmod(nullptr, mode);
20 }
21
22 __crt_internal_win32_buffer<wchar_t> wide_path;
23
24 errno_t const cvt = __acrt_mbs_to_wcs_cp(path, wide_path, __acrt_get_utf8_acp_compatibility_codepage());
25
26 if (cvt != 0) {
27 return -1;
28 }
29
30 return _wchmod(wide_path.data(), mode);
31}