Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 165 insertions, 0 deletions

diff --git a/REORG.TODO/posix/tst-posix_spawn-fd.c b/REORG.TODO/posix/tst-posix_spawn-fd.c
new file mode 100644
index 0000000000..4d5133ca81
--- /dev/null
+++ b/REORG.TODO/posix/tst-posix_spawn-fd.c
@@ -0,0 +1,165 @@
+/* Test that spawn file action functions work without file limit.
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <spawn.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+/* _SC_OPEN_MAX value.  */
+static long maxfd;
+
+/* A positive but unused file descriptor, used for testing
+   purposes.  */
+static int invalid_fd;
+
+/* Indicate that errors have been encountered.  */
+static bool errors;
+
+static posix_spawn_file_actions_t actions;
+
+static void
+one_test (const char *name, int (*func) (int), int fd,
+          bool expect_success)
+{
+  int ret = func (fd);
+  if (expect_success)
+    {
+      if (ret != 0)
+        {
+          errno = ret;
+          printf ("error: posix_spawn_file_actions_%s (%d): %m\n", name, fd);
+          errors = true;
+        }
+    }
+  else if (ret != EBADF)
+    {
+      if (ret == 0)
+          printf ("error: posix_spawn_file_actions_%s (%d):"
+                  " unexpected success\n", name, fd);
+      else
+        {
+          errno = ret;
+          printf ("error: posix_spawn_file_actions_%s (%d): %m\n", name, fd);
+        }
+      errors = true;
+    }
+}
+
+static void
+all_tests (const char *name, int (*func) (int))
+{
+  one_test (name, func, 0, true);
+  one_test (name, func, invalid_fd, true);
+  one_test (name, func, -1, false);
+  one_test (name, func, -2, false);
+  if (maxfd >= 0)
+    one_test (name, func, maxfd, false);
+}
+
+static int
+addopen (int fd)
+{
+  return posix_spawn_file_actions_addopen
+    (&actions, fd, "/dev/null", O_RDONLY, 0);
+}
+
+static int
+adddup2 (int fd)
+{
+  return posix_spawn_file_actions_adddup2 (&actions, fd, 1);
+}
+
+static int
+adddup2_reverse (int fd)
+{
+  return posix_spawn_file_actions_adddup2 (&actions, 1, fd);
+}
+
+static int
+addclose (int fd)
+{
+  return posix_spawn_file_actions_addclose (&actions, fd);
+}
+
+static void
+all_functions (void)
+{
+  all_tests ("addopen", addopen);
+  all_tests ("adddup2", adddup2);
+  all_tests ("adddup2", adddup2_reverse);
+  all_tests ("adddup2", addclose);
+}
+
+static int
+do_test (void)
+{
+  /* Try to eliminate the file descriptor limit.  */
+  {
+    struct rlimit limit;
+    if (getrlimit (RLIMIT_NOFILE, &limit) < 0)
+      {
+        printf ("error: getrlimit: %m\n");
+        return 1;
+      }
+    limit.rlim_cur = RLIM_INFINITY;
+    if (setrlimit (RLIMIT_NOFILE, &limit) < 0)
+      printf ("warning: setrlimit: %m\n");
+  }
+
+  maxfd = sysconf (_SC_OPEN_MAX);
+  printf ("info: _SC_OPEN_MAX: %ld\n", maxfd);
+
+  invalid_fd = dup (0);
+  if (invalid_fd < 0)
+    {
+      printf ("error: dup: %m\n");
+      return 1;
+    }
+  if (close (invalid_fd) < 0)
+    {
+      printf ("error: close: %m\n");
+      return 1;
+    }
+
+  int ret = posix_spawn_file_actions_init (&actions);
+  if (ret != 0)
+    {
+      errno = ret;
+      printf ("error: posix_spawn_file_actions_init: %m\n");
+      return 1;
+    }
+
+  all_functions ();
+
+  ret = posix_spawn_file_actions_destroy (&actions);
+  if (ret != 0)
+    {
+      errno = ret;
+      printf ("error: posix_spawn_file_actions_destroy: %m\n");
+      return 1;
+    }
+
+  return errors;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"