libstdc++-v3/testsuite/27_io/filesystem/operations/permissions.cc

   1 // Copyright (C) 2016-2019 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++17 -lstdc++fs" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 // C++17 30.10.14.26 Permissions [fs.op.permissions]
  23
  24 #include <filesystem>
  25 #include <testsuite_fs.h>
  26 #include <testsuite_hooks.h>
  27
  28 void
  29 test01()
  30 {
  31   using std::filesystem::perms;
  32   using std::filesystem::perm_options;
  33
  34   auto p = __gnu_test::nonexistent_path();
  35
  36   __gnu_test::scoped_file f(p);
  37   VERIFY( exists(p) );
  38   permissions(p, perms::owner_all);
  39   VERIFY( status(p).permissions() == perms::owner_all );
  40   permissions(p, perms::group_read, perm_options::add);
  41   VERIFY( status(p).permissions() == (perms::owner_all | perms::group_read) );
  42   permissions(p, perms::group_read, perm_options::remove);
  43   VERIFY( status(p).permissions() == perms::owner_all );
  44 }
  45
  46 void
  47 test02()
  48 {
  49   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
  50   using std::filesystem::perms;
  51   using std::filesystem::perm_options;
  52
  53   auto p = __gnu_test::nonexistent_path();
  54
  55   std::error_code ec;
  56   permissions(p, perms::owner_all, ec);
  57   VERIFY( ec );
  58
  59   __gnu_test::scoped_file f(p);
  60   VERIFY( exists(p) );
  61
  62   ec = bad_ec;
  63   permissions(p, perms::owner_all, ec);
  64   VERIFY( !ec );
  65   VERIFY( status(p).permissions() == perms::owner_all );
  66   ec = bad_ec;
  67   permissions(p, perms::group_read, perm_options::add, ec);
  68   VERIFY( !ec );
  69   VERIFY( status(p).permissions() == (perms::owner_all | perms::group_read) );
  70   ec = bad_ec;
  71   permissions(p, perms::group_read, perm_options::remove, ec);
  72   VERIFY( !ec );
  73   VERIFY( status(p).permissions() == perms::owner_all );
  74 }
  75
  76 void
  77 test03()
  78 {
  79   using std::filesystem::perms;
  80   using std::filesystem::perm_options;
  81
  82   __gnu_test::scoped_file f;
  83   VERIFY( exists(f.path) );
  84
  85   auto p = __gnu_test::nonexistent_path();
  86   create_symlink(f.path, p);
  87
  88   std::error_code ec = make_error_code(std::errc::no_such_file_or_directory);
  89   permissions(p, perms::owner_all,
  90               perm_options::replace|perm_options::nofollow, ec);
  91   bool caught = false;
  92   std::error_code ec2;
  93   try
  94   {
  95     permissions(p, perms::owner_all,
  96                 perm_options::replace|perm_options::nofollow);
  97   }
  98   catch (const std::filesystem::filesystem_error& ex)
  99   {
 100     caught = true;
 101     ec2 = ex.code();
 102     VERIFY( ex.path1() == p );
 103   }
 104   // Both calls should succeed, or both should fail with same error:
 105   if (ec)
 106   {
 107     VERIFY( caught );
 108     VERIFY( ec == ec2 );
 109   }
 110   else
 111     VERIFY( !caught );
 112
 113   remove(p);
 114 }
 115
 116 void
 117 test04()
 118 {
 119   using perms = std::filesystem::perms;
 120
 121   auto p = __gnu_test::nonexistent_path();
 122   create_symlink(__gnu_test::nonexistent_path(), p);
 123
 124   std::error_code ec = make_error_code(std::errc::no_such_file_or_directory);
 125   permissions(p, perms::owner_all, ec);
 126   VERIFY( ec );
 127   std::error_code ec2;
 128   try
 129   {
 130     permissions(p, perms::owner_all);
 131   }
 132   catch (const std::filesystem::filesystem_error& ex)
 133   {
 134     ec2 = ex.code();
 135     VERIFY( ex.path1() == p );
 136   }
 137   VERIFY( ec == ec2 );
 138
 139   remove(p);
 140 }
 141
 142 void
 143 test05()
 144 {
 145   const std::error_code bad_ec = make_error_code(std::errc::invalid_argument);
 146   using std::filesystem::perms;
 147   using std::filesystem::perm_options;
 148   std::error_code ec;
 149
 150   __gnu_test::scoped_file f;
 151   auto p = perms::owner_write;
 152
 153   // symlink_nofollow should not give an error for non-symlinks
 154   ec = bad_ec;
 155   permissions(f.path, p, perm_options::replace|perm_options::nofollow, ec);
 156   VERIFY( !ec );
 157   auto st = status(f.path);
 158   VERIFY( st.permissions() == p );
 159   p |= perms::owner_read;
 160   ec = bad_ec;
 161   permissions(f.path, p, perm_options::replace|perm_options::nofollow, ec);
 162   VERIFY( !ec );
 163   st = status(f.path);
 164   VERIFY( st.permissions() == p );
 165 }
 166
 167 int
 168 main()
 169 {
 170   test01();
 171   test02();
 172   test03();
 173   test04();
 174   test05();
 175 }