1// -*- C++ -*-
 2//===----------------------------------------------------------------------===//
 3//
 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 5// See https://llvm.org/LICENSE.txt for license information.
 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 7//
 8//===----------------------------------------------------------------------===//
 9
10#ifndef _LIBCPP___FILESYSTEM_PERMS_H
11#define _LIBCPP___FILESYSTEM_PERMS_H
12
13#include <__config>
14
15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16#  pragma GCC system_header
17#endif
18
19#if _LIBCPP_STD_VER >= 17
20
21_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
22
23// On Windows, these permission bits map to one single readonly flag per
24// file, and the executable bit is always returned as set. When setting
25// permissions, as long as the write bit is set for either owner, group or
26// others, the readonly flag is cleared.
27enum class perms : unsigned {
28  none = 0,
29
30  owner_read  = 0400,
31  owner_write = 0200,
32  owner_exec  = 0100,
33  owner_all   = 0700,
34
35  group_read  = 040,
36  group_write = 020,
37  group_exec  = 010,
38  group_all   = 070,
39
40  others_read  = 04,
41  others_write = 02,
42  others_exec  = 01,
43  others_all   = 07,
44
45  all = 0777,
46
47  set_uid    = 04000,
48  set_gid    = 02000,
49  sticky_bit = 01000,
50  mask       = 07777,
51  unknown    = 0xFFFF,
52};
53
54_LIBCPP_HIDE_FROM_ABI inline constexpr perms operator&(perms __lhs, perms __rhs) {
55  return static_cast<perms>(static_cast<unsigned>(__lhs) & static_cast<unsigned>(__rhs));
56}
57
58_LIBCPP_HIDE_FROM_ABI inline constexpr perms operator|(perms __lhs, perms __rhs) {
59  return static_cast<perms>(static_cast<unsigned>(__lhs) | static_cast<unsigned>(__rhs));
60}
61
62_LIBCPP_HIDE_FROM_ABI inline constexpr perms operator^(perms __lhs, perms __rhs) {
63  return static_cast<perms>(static_cast<unsigned>(__lhs) ^ static_cast<unsigned>(__rhs));
64}
65
66_LIBCPP_HIDE_FROM_ABI inline constexpr perms operator~(perms __lhs) {
67  return static_cast<perms>(~static_cast<unsigned>(__lhs));
68}
69
70_LIBCPP_HIDE_FROM_ABI inline perms& operator&=(perms& __lhs, perms __rhs) { return __lhs = __lhs & __rhs; }
71
72_LIBCPP_HIDE_FROM_ABI inline perms& operator|=(perms& __lhs, perms __rhs) { return __lhs = __lhs | __rhs; }
73
74_LIBCPP_HIDE_FROM_ABI inline perms& operator^=(perms& __lhs, perms __rhs) { return __lhs = __lhs ^ __rhs; }
75
76_LIBCPP_END_NAMESPACE_FILESYSTEM
77
78#endif // _LIBCPP_STD_VER >= 17
79
80#endif // _LIBCPP___FILESYSTEM_PERMS_H