aboutsummaryrefslogtreecommitdiff
path: root/REORG.TODO/posix/tst-posix_spawn-fd.c
diff options
context:
space:
mode:
Diffstat (limited to 'REORG.TODO/posix/tst-posix_spawn-fd.c')
-rw-r--r--REORG.TODO/posix/tst-posix_spawn-fd.c165
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"