libcxx/include/__filesystem/perms.h

   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 <__availability>
  14 #include <__config>
  15
  16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  17 #  pragma GCC system_header
  18 #endif
  19
  20 #ifndef _LIBCPP_CXX03_LANG
  21
  22 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
  23
  24 // On Windows, these permission bits map to one single readonly flag per
  25 // file, and the executable bit is always returned as set. When setting
  26 // permissions, as long as the write bit is set for either owner, group or
  27 // others, the readonly flag is cleared.
  28 enum class perms : unsigned {
  29   none = 0,
  30
  31   owner_read = 0400,
  32   owner_write = 0200,
  33   owner_exec = 0100,
  34   owner_all = 0700,
  35
  36   group_read = 040,
  37   group_write = 020,
  38   group_exec = 010,
  39   group_all = 070,
  40
  41   others_read = 04,
  42   others_write = 02,
  43   others_exec = 01,
  44   others_all = 07,
  45
  46   all = 0777,
  47
  48   set_uid = 04000,
  49   set_gid = 02000,
  50   sticky_bit = 01000,
  51   mask = 07777,
  52   unknown = 0xFFFF,
  53 };
  54
  55 _LIBCPP_INLINE_VISIBILITY
  56 inline constexpr perms operator&(perms __lhs, perms __rhs) {
  57   return static_cast<perms>(static_cast<unsigned>(__lhs) &
  58                             static_cast<unsigned>(__rhs));
  59 }
  60
  61 _LIBCPP_INLINE_VISIBILITY
  62 inline constexpr perms operator|(perms __lhs, perms __rhs) {
  63   return static_cast<perms>(static_cast<unsigned>(__lhs) |
  64                             static_cast<unsigned>(__rhs));
  65 }
  66
  67 _LIBCPP_INLINE_VISIBILITY
  68 inline constexpr perms operator^(perms __lhs, perms __rhs) {
  69   return static_cast<perms>(static_cast<unsigned>(__lhs) ^
  70                             static_cast<unsigned>(__rhs));
  71 }
  72
  73 _LIBCPP_INLINE_VISIBILITY
  74 inline constexpr perms operator~(perms __lhs) {
  75   return static_cast<perms>(~static_cast<unsigned>(__lhs));
  76 }
  77
  78 _LIBCPP_INLINE_VISIBILITY
  79 inline perms& operator&=(perms& __lhs, perms __rhs) { return __lhs = __lhs & __rhs; }
  80
  81 _LIBCPP_INLINE_VISIBILITY
  82 inline perms& operator|=(perms& __lhs, perms __rhs) { return __lhs = __lhs | __rhs; }
  83
  84 _LIBCPP_INLINE_VISIBILITY
  85 inline perms& operator^=(perms& __lhs, perms __rhs) { return __lhs = __lhs ^ __rhs; }
  86
  87 _LIBCPP_END_NAMESPACE_FILESYSTEM
  88
  89 #endif // _LIBCPP_CXX03_LANG
  90
  91 #endif // _LIBCPP___FILESYSTEM_PERMS_H