1 files changed, 146 insertions, 0 deletions
diff --git a/gnulib-tests/test-pipe2.c b/gnulib-tests/test-pipe2.c
new file mode 100644
index 0000000..7e0cdc7
--- /dev/null
+++ b/gnulib-tests/test-pipe2.c
@@ -0,0 +1,146 @@
+/* Test of pipe2.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (pipe2, int, (int[2], int));
+
+#include <fcntl.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+/* Get declarations of the native Windows API functions.  */
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Get _get_osfhandle.  */
+# if GNULIB_MSVC_NOTHROW
+#  include "msvc-nothrow.h"
+# else
+#  include <io.h>
+# endif
+#endif
+
+#include "binary-io.h"
+#include "macros.h"
+#if GNULIB_NONBLOCKING
+# include "nonblocking.h"
+#endif
+
+/* Return true if FD is open.  */
+static bool
+is_open (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  /* On native Windows, the initial state of unassigned standard file
+     descriptors is that they are open but point to an
+     INVALID_HANDLE_VALUE, and there is no fcntl.  */
+  return (HANDLE) _get_osfhandle (fd) != INVALID_HANDLE_VALUE;
+#else
+# ifndef F_GETFL
+#  error Please port fcntl to your platform
+# endif
+  return 0 <= fcntl (fd, F_GETFL);
+#endif
+}
+
+/* Return true if FD is not inherited to child processes.  */
+static bool
+is_cloexec (int fd)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  HANDLE h = (HANDLE) _get_osfhandle (fd);
+  DWORD flags;
+  ASSERT (GetHandleInformation (h, &flags));
+  return (flags & HANDLE_FLAG_INHERIT) == 0;
+#else
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFD)) >= 0);
+  return (flags & FD_CLOEXEC) != 0;
+#endif
+}
+
+#if ! GNULIB_NONBLOCKING
+static int
+get_nonblocking_flag (int fd)
+{
+# if defined _WIN32 && ! defined __CYGWIN__
+  return 0;
+# else
+#  ifndef F_GETFL
+#   error Please port fcntl to your platform
+#  endif
+  int flags;
+  ASSERT ((flags = fcntl (fd, F_GETFL)) >= 0);
+  return (flags & O_NONBLOCK) != 0;
+# endif
+}
+#endif
+
+int
+main ()
+{
+  int use_nonblocking;
+  int use_cloexec;
+
+  for (use_nonblocking = 0; use_nonblocking <= !!O_NONBLOCK; use_nonblocking++)
+    for (use_cloexec = 0; use_cloexec <= !!O_CLOEXEC; use_cloexec++)
+      {
+        int o_flags;
+        int fd[2];
+
+        o_flags = 0;
+        if (use_nonblocking)
+          o_flags |= O_NONBLOCK;
+        if (use_cloexec)
+          o_flags |= O_CLOEXEC;
+
+        fd[0] = -1;
+        fd[1] = -1;
+        ASSERT (pipe2 (fd, o_flags) >= 0);
+        ASSERT (fd[0] >= 0);
+        ASSERT (fd[1] >= 0);
+        ASSERT (fd[0] != fd[1]);
+        ASSERT (is_open (fd[0]));
+        ASSERT (is_open (fd[1]));
+        if (use_cloexec)
+          {
+            ASSERT (is_cloexec (fd[0]));
+            ASSERT (is_cloexec (fd[1]));
+          }
+        else
+          {
+            ASSERT (!is_cloexec (fd[0]));
+            ASSERT (!is_cloexec (fd[1]));
+          }
+        if (use_nonblocking)
+          {
+            ASSERT (get_nonblocking_flag (fd[0]) == 1);
+            ASSERT (get_nonblocking_flag (fd[1]) == 1);
+          }
+        else
+          {
+            ASSERT (get_nonblocking_flag (fd[0]) == 0);
+            ASSERT (get_nonblocking_flag (fd[1]) == 0);
+          }
+
+        ASSERT (close (fd[0]) == 0);
+        ASSERT (close (fd[1]) == 0);
+      }
+
+  return 0;
+}