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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:39:06 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:39:06 -0700
commit75accc3bc3c164ac6063c384c98f0dfa7d489dcc (patch)
treea17543fc0ddbfd1478f4b68123bc32f12a31176f /test/nptl/tst-sem4.c
parenta319d590551ff74bbc4de51243e2d5f20ac4c7fd (diff)
test/nptl/: tests for NPTL
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'test/nptl/tst-sem4.c')
-rw-r--r--test/nptl/tst-sem4.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/test/nptl/tst-sem4.c b/test/nptl/tst-sem4.c
new file mode 100644
index 000000000..ccffbdd77
--- /dev/null
+++ b/test/nptl/tst-sem4.c
@@ -0,0 +1,147 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <semaphore.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+static void
+remove_sem (int status, void *arg)
+{
+ sem_unlink (arg);
+}
+
+
+int
+main (void)
+{
+ sem_t *s;
+ sem_t *s2;
+ pid_t pid;
+ int val;
+
+ s = sem_open ("/glibc-tst-sem4", O_CREAT, 0600, 1);
+ if (s == SEM_FAILED)
+ {
+ if (errno == ENOSYS)
+ {
+ puts ("sem_open not supported. Oh well.");
+ return 0;
+ }
+
+ /* Maybe the shm filesystem has strict permissions. */
+ if (errno == EACCES)
+ {
+ puts ("sem_open not allowed. Oh well.");
+ return 0;
+ }
+
+ printf ("sem_open: %m\n");
+ return 1;
+ }
+
+ on_exit (remove_sem, (void *) "/glibc-tst-sem4");
+
+ /* We have the semaphore object. Now try again with O_EXCL, this
+ should fail. */
+ s2 = sem_open ("/glibc-tst-sem4", O_CREAT | O_EXCL, 0600, 1);
+ if (s2 != SEM_FAILED)
+ {
+ puts ("2nd sem_open didn't fail");
+ return 1;
+ }
+ if (errno != EEXIST)
+ {
+ puts ("2nd sem_open returned wrong error");
+ return 1;
+ }
+
+ /* Check the value. */
+ if (sem_getvalue (s, &val) == -1)
+ {
+ puts ("getvalue failed");
+ return 1;
+ }
+ if (val != 1)
+ {
+ printf ("initial value wrong: got %d, expected 1\n", val);
+ return 1;
+ }
+
+ if (TEMP_FAILURE_RETRY (sem_wait (s)) == -1)
+ {
+ puts ("1st sem_wait failed");
+ return 1;
+ }
+
+ pid = fork ();
+ if (pid == -1)
+ {
+ printf ("fork failed: %m\n");
+ return 1;
+ }
+
+ if (pid == 0)
+ {
+ /* Child. */
+
+ /* Check the value. */
+ if (sem_getvalue (s, &val) == -1)
+ {
+ puts ("child: getvalue failed");
+ return 1;
+ }
+ if (val != 0)
+ {
+ printf ("child: value wrong: got %d, expect 0\n", val);
+ return 1;
+ }
+
+ if (sem_post (s) == -1)
+ {
+ puts ("child: post failed");
+ return 1;
+ }
+ }
+ else
+ {
+ if (TEMP_FAILURE_RETRY (sem_wait (s)) == -1)
+ {
+ puts ("2nd sem_wait failed");
+ return 1;
+ }
+
+ if (sem_getvalue (s, &val) == -1)
+ {
+ puts ("parent: 2nd getvalue failed");
+ return 1;
+ }
+ if (val != 0)
+ {
+ printf ("parent: value wrong: got %d, expected 0\n", val);
+ return 1;
+ }
+ }
+
+ return 0;
+}