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authorUlrich Drepper <drepper@redhat.com>2003-05-17 20:53:32 +0000
committerUlrich Drepper <drepper@redhat.com>2003-05-17 20:53:32 +0000
commitfddfebbd1064dec313891ad91dd9ca6e92e622ec (patch)
treeed231a996e804653468ac2916a0d4b32628c0093 /nptl/tst-sem7.c
parent68a396e83a8e1e50d0dfde8ffb090a8df311453f (diff)
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Update.
2003-05-17 Ulrich Drepper <drepper@redhat.com> * sem_open.c: Fix one endless loop. Implement correct semantics wrt opening the same semaphore more then once. * sem_close.c: Adjust for sem_open change. * semaphoreP.h: Include <semaphore.h>. Define struct inuse_sem. Declare __sem_mappings, __sem_mappings_lock, __sem_search. * Makefile (tests): Add tst-sem7. * tst-sem7.c: New file.
Diffstat (limited to 'nptl/tst-sem7.c')
-rw-r--r--nptl/tst-sem7.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/nptl/tst-sem7.c b/nptl/tst-sem7.c
new file mode 100644
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+++ b/nptl/tst-sem7.c
@@ -0,0 +1,109 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+ 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;
+ sem_t *s3;
+
+ s = sem_open ("/glibc-tst-sem7", 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-sem7");
+
+ /* We have the semaphore object. Now try again. We should get the
+ same address. */
+ s2 = sem_open ("/glibc-tst-sem7", O_CREAT, 0600, 1);
+ if (s2 == SEM_FAILED)
+ {
+ puts ("2nd sem_open failed");
+ return 1;
+ }
+ if (s != s2)
+ {
+ puts ("2nd sem_open didn't return the same address");
+ return 1;
+ }
+
+ /* And again, this time without O_CREAT. */
+ s3 = sem_open ("/glibc-tst-sem7", 0);
+ if (s3 == SEM_FAILED)
+ {
+ puts ("3rd sem_open failed");
+ return 1;
+ }
+ if (s != s3)
+ {
+ puts ("3rd sem_open didn't return the same address");
+ return 1;
+ }
+
+ /* Now close the handle. Three times. */
+ if (sem_close (s2) != 0)
+ {
+ puts ("1st sem_close failed");
+ return 1;
+ }
+ if (sem_close (s) != 0)
+ {
+ puts ("2nd sem_close failed");
+ return 1;
+ }
+ if (sem_close (s3) != 0)
+ {
+ puts ("3rd sem_close failed");
+ return 1;
+ }
+
+ return 0;
+}