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* [committed] libstdc++: Add more tests for filesystem::create_directory [PR101510]
@ 2021-07-20 11:59 Jonathan Wakely
  2021-07-20 19:36 ` [committed] libstdc++: Fix create_directories to resolve symlinks [PR101510] Jonathan Wakely
  0 siblings, 1 reply; 2+ messages in thread
From: Jonathan Wakely @ 2021-07-20 11:59 UTC (permalink / raw)
  To: libstdc++, gcc-patches

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Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

	PR libstdc++/101510
	* src/c++17/fs_ops.cc (create_dir): Adjust whitespace.
	* testsuite/27_io/filesystem/operations/create_directory.cc:
	Test creating directory with name of existing symlink to
	directory.
	* testsuite/experimental/filesystem/operations/create_directory.cc:
	Likewise.

Tested x86_64-linux. Committed to trunk.


[-- Attachment #2: patch.txt --]
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commit 0c4ae4ff46b1d7633f1e06f57d348b5817b8f640
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Jul 20 12:35:37 2021

    libstdc++: Add more tests for filesystem::create_directory [PR101510]
    
    Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/101510
            * src/c++17/fs_ops.cc (create_dir): Adjust whitespace.
            * testsuite/27_io/filesystem/operations/create_directory.cc:
            Test creating directory with name of existing symlink to
            directory.
            * testsuite/experimental/filesystem/operations/create_directory.cc:
            Likewise.

diff --git a/libstdc++-v3/src/c++17/fs_ops.cc b/libstdc++-v3/src/c++17/fs_ops.cc
index 66207ae5e44..cec76446f06 100644
--- a/libstdc++-v3/src/c++17/fs_ops.cc
+++ b/libstdc++-v3/src/c++17/fs_ops.cc
@@ -577,8 +577,7 @@ namespace
   {
     bool created = false;
 #ifdef _GLIBCXX_HAVE_SYS_STAT_H
-    posix::mode_t mode
-      = static_cast<std::underlying_type_t<fs::perms>>(perm);
+    posix::mode_t mode = static_cast<std::underlying_type_t<fs::perms>>(perm);
     if (posix::mkdir(p.c_str(), mode))
       {
 	const int err = errno;
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc
index a0e50471275..256621481d7 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc
@@ -54,6 +54,33 @@ test01()
   b = create_directory(p);
   VERIFY( !b );
 
+  auto f = p/"file";
+  std::ofstream{f} << "create file";
+  b = create_directory(f, ec);
+  VERIFY( ec == std::errc::file_exists );
+  VERIFY( !b );
+  try
+  {
+    create_directory(f);
+    VERIFY( false );
+  }
+  catch (const fs::filesystem_error& e)
+  {
+    VERIFY( e.code() == std::errc::file_exists );
+    VERIFY( e.path1() == f );
+  }
+
+  // PR libstdc++/101510 create_directory on an existing symlink to a directory
+  fs::create_directory(p/"dir");
+  auto link = p/"link";
+  fs::create_directory_symlink("dir", link);
+  ec = bad_ec;
+  b = fs::create_directory(link, ec);
+  VERIFY( !b );
+  VERIFY( !ec );
+  b = fs::create_directory(link);
+  VERIFY( !b );
+
   remove_all(p, ec);
 }
 
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc
index ee2a74b8803..39f95b61a45 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc
@@ -46,12 +46,40 @@ test01()
   VERIFY( exists(p) );
 
   // Test existing path (libstdc++/71036).
+  ec = make_error_code(std::errc::invalid_argument);
   b = create_directory(p, ec);
   VERIFY( !ec );
   VERIFY( !b );
   b = create_directory(p);
   VERIFY( !b );
 
+  auto f = p/"file";
+  std::ofstream{f} << "create file";
+  b = create_directory(f, ec);
+  VERIFY( ec == std::errc::file_exists );
+  VERIFY( !b );
+  try
+  {
+    create_directory(f);
+    VERIFY( false );
+  }
+  catch (const fs::filesystem_error& e)
+  {
+    VERIFY( e.code() == std::errc::file_exists );
+    VERIFY( e.path1() == f );
+  }
+
+  // PR libstdc++/101510 create_directory on an existing symlink to a directory
+  fs::create_directory(p/"dir");
+  auto link = p/"link";
+  fs::create_directory_symlink("dir", link);
+  ec = make_error_code(std::errc::invalid_argument);
+  b = fs::create_directory(link, ec);
+  VERIFY( !b );
+  VERIFY( !ec );
+  b = fs::create_directory(link);
+  VERIFY( !b );
+
   remove_all(p, ec);
 }
 

^ permalink raw reply	[flat|nested] 2+ messages in thread

* [committed] libstdc++: Fix create_directories to resolve symlinks [PR101510]
  2021-07-20 11:59 [committed] libstdc++: Add more tests for filesystem::create_directory [PR101510] Jonathan Wakely
@ 2021-07-20 19:36 ` Jonathan Wakely
  0 siblings, 0 replies; 2+ messages in thread
From: Jonathan Wakely @ 2021-07-20 19:36 UTC (permalink / raw)
  To: libstdc++, gcc-patches

[-- Attachment #1: Type: text/plain, Size: 1662 bytes --]

On 20/07/21 12:59 +0100, Jonathan Wakely wrote:
>Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
>
>libstdc++-v3/ChangeLog:
>
>	PR libstdc++/101510
>	* src/c++17/fs_ops.cc (create_dir): Adjust whitespace.
>	* testsuite/27_io/filesystem/operations/create_directory.cc:
>	Test creating directory with name of existing symlink to
>	directory.
>	* testsuite/experimental/filesystem/operations/create_directory.cc:
>	Likewise.
>

It turned out this bug report wasn't actually about create_directory,
but create_directories, which does have a bug.

     When filesystem__create_directories checks to see if the path already
     exists and resovles to a directory, it uses filesystem::symlink_status,
     which means it reports an error if the path is a symlink. It should use
     filesystem::status, so that the target directory is detected, and no
     error is reported.
     
     Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
     
     libstdc++-v3/ChangeLog:
     
             PR libstdc++/101510
             * src/c++17/fs_ops.cc (fs::create_directories): Use status
             instead of symlink_status.
             * src/filesystem/ops.cc (fs::create_directories): Likewise.
             * testsuite/27_io/filesystem/operations/create_directories.cc:
             * testsuite/27_io/filesystem/operations/create_directory.cc: Do
             not test with symlinks on Windows.
             * testsuite/experimental/filesystem/operations/create_directories.cc:
             * testsuite/experimental/filesystem/operations/create_directory.cc:
             Do not test with symlinks on Windows.


Tested powerpc64le-linux. Committed to trunk.



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[-- Type: text/x-patch, Size: 5962 bytes --]

commit 124eaa50e0a34f5f89572c1aa812c50979da58fc
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Jul 20 18:15:48 2021

    libstdc++: Fix create_directories to resolve symlinks [PR101510]
    
    When filesystem__create_directories checks to see if the path already
    exists and resovles to a directory, it uses filesystem::symlink_status,
    which means it reports an error if the path is a symlink. It should use
    filesystem::status, so that the target directory is detected, and no
    error is reported.
    
    Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/101510
            * src/c++17/fs_ops.cc (fs::create_directories): Use status
            instead of symlink_status.
            * src/filesystem/ops.cc (fs::create_directories): Likewise.
            * testsuite/27_io/filesystem/operations/create_directories.cc:
            * testsuite/27_io/filesystem/operations/create_directory.cc: Do
            not test with symlinks on Windows.
            * testsuite/experimental/filesystem/operations/create_directories.cc:
            * testsuite/experimental/filesystem/operations/create_directory.cc:
            Do not test with symlinks on Windows.

diff --git a/libstdc++-v3/src/c++17/fs_ops.cc b/libstdc++-v3/src/c++17/fs_ops.cc
index cec76446f06..ceaf0291d64 100644
--- a/libstdc++-v3/src/c++17/fs_ops.cc
+++ b/libstdc++-v3/src/c++17/fs_ops.cc
@@ -496,7 +496,7 @@ fs::create_directories(const path& p, error_code& ec)
       return false;
     }
 
-  file_status st = symlink_status(p, ec);
+  file_status st = status(p, ec);
   if (is_directory(st))
     return false;
   else if (ec && !status_known(st))
diff --git a/libstdc++-v3/src/filesystem/ops.cc b/libstdc++-v3/src/filesystem/ops.cc
index c400376d224..7c5b164fb7f 100644
--- a/libstdc++-v3/src/filesystem/ops.cc
+++ b/libstdc++-v3/src/filesystem/ops.cc
@@ -426,7 +426,7 @@ fs::create_directories(const path& p, error_code& ec) noexcept
       return false;
     }
 
-  file_status st = symlink_status(p, ec);
+  file_status st = status(p, ec);
   if (is_directory(st))
     return false;
   else if (ec && !status_known(st))
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directories.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directories.cc
index 393d6a55309..304c1453afe 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directories.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directories.cc
@@ -145,10 +145,33 @@ test03()
   remove_all(p);
 }
 
+void
+test04()
+{
+#if defined(__MINGW32__) || defined(__MINGW64__)
+  // no symlinks
+#else
+  // PR libstdc++/101510
+  // create_directories reports an error if the path is a symlink to a dir
+  std::error_code ec = make_error_code(std::errc::invalid_argument);
+  const auto p = __gnu_test::nonexistent_path() / "";
+  fs::create_directories(p/"dir");
+  auto link = p/"link";
+  fs::create_directory_symlink("dir", link);
+  bool created = fs::create_directories(link, ec);
+  VERIFY( !created );
+  VERIFY( !ec );
+  created = fs::create_directories(link);
+  VERIFY( !created );
+  remove_all(p);
+#endif
+}
+
 int
 main()
 {
   test01();
   test02();
   test03();
+  test04();
 }
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc
index 256621481d7..afddccf5ed6 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directory.cc
@@ -70,6 +70,9 @@ test01()
     VERIFY( e.path1() == f );
   }
 
+#if defined(__MINGW32__) || defined(__MINGW64__)
+  // no symlinks
+#else
   // PR libstdc++/101510 create_directory on an existing symlink to a directory
   fs::create_directory(p/"dir");
   auto link = p/"link";
@@ -80,6 +83,7 @@ test01()
   VERIFY( !ec );
   b = fs::create_directory(link);
   VERIFY( !b );
+#endif
 
   remove_all(p, ec);
 }
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directories.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directories.cc
index fb264002b69..fc134ad64a3 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directories.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directories.cc
@@ -129,10 +129,33 @@ test03()
   remove_all(p);
 }
 
+void
+test04()
+{
+#if defined(__MINGW32__) || defined(__MINGW64__)
+  // no symlinks
+#else
+  // PR libstdc++/101510
+  // create_directories reports an error if the path is a symlink to a dir
+  std::error_code ec = make_error_code(std::errc::invalid_argument);
+  const auto p = __gnu_test::nonexistent_path() / "";
+  fs::create_directories(p/"dir");
+  auto link = p/"link";
+  fs::create_directory_symlink("dir", link);
+  bool created = fs::create_directories(link, ec);
+  VERIFY( !created );
+  VERIFY( !ec );
+  created = fs::create_directories(link);
+  VERIFY( !created );
+  remove_all(p);
+#endif
+}
+
 int
 main()
 {
   test01();
   test02();
   test03();
+  test04();
 }
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc b/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc
index 39f95b61a45..8e36b762a25 100644
--- a/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc
+++ b/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directory.cc
@@ -69,6 +69,9 @@ test01()
     VERIFY( e.path1() == f );
   }
 
+#if defined(__MINGW32__) || defined(__MINGW64__)
+  // no symlinks
+#else
   // PR libstdc++/101510 create_directory on an existing symlink to a directory
   fs::create_directory(p/"dir");
   auto link = p/"link";
@@ -79,6 +82,7 @@ test01()
   VERIFY( !ec );
   b = fs::create_directory(link);
   VERIFY( !b );
+#endif
 
   remove_all(p, ec);
 }

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2021-07-20 19:36 ` [committed] libstdc++: Fix create_directories to resolve symlinks [PR101510] Jonathan Wakely

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