[PATCH] tst-mqueue7 (test for implicit mq_close in exec*)

[Jakub Jelinek <jakub@redhat.com>]

Hi!

2004-04-14  Jakub Jelinek  <jakub@redhat.com>

	* rt/Makefile (tests): Add tst-mqueue7.
	(tst-mqueue7-ARGS): Set.
	* rt/tst-mqueue7.c: New test.

--- libc/rt/Makefile.jj	2004-04-13 15:53:21.000000000 +0200
+++ libc/rt/Makefile	2004-04-14 08:59:27.565540852 +0200
@@ -44,7 +44,7 @@ librt-routines = $(aio-routines) \
 tests := tst-shm tst-clock tst-clock_nanosleep tst-timer tst-timer2 \
 	 tst-aio tst-aio64 tst-aio2 tst-aio3 tst-aio4 tst-aio5 tst-aio6 \
 	 tst-aio7 tst-mqueue1 tst-mqueue2 tst-mqueue3 tst-mqueue4 \
-	 tst-mqueue5 tst-mqueue6 tst-timer3
+	 tst-mqueue5 tst-mqueue6 tst-mqueue7 tst-timer3
 
 extra-libs := librt
 extra-libs-others := $(extra-libs)
@@ -75,6 +75,8 @@ ifeq (yes,$(build-bounded))
 $(tests:%=$(objpfx)%-bp): $(objpfx)librt_b.a $(bounded-thread-library)
 endif
 
+tst-mqueue7-ARGS = -- $(built-program-cmd)
+
 ifeq (yes,$(build-static-nss))
 otherlibs += $(nssobjdir)/libnss_files.a $(resolvobjdir)/libnss_dns.a \
              $(resolvobjdir)/libresolv.a
--- libc/rt/tst-mqueue7.c.jj	2004-04-14 08:29:27.533130096 +0200
+++ libc/rt/tst-mqueue7.c	2004-04-14 09:14:12.412964673 +0200
@@ -0,0 +1,109 @@
+/* Test all open message queues descriptors are closed during exec*.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
+
+   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 <mqueue.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+#define OPT_AFTEREXEC 20000
+
+static mqd_t after_exec = (mqd_t) -1;
+
+#define CMDLINE_OPTIONS \
+  { "after-exec", required_argument, NULL, OPT_AFTEREXEC },
+
+#define CMDLINE_PROCESS \
+  case OPT_AFTEREXEC:					\
+    after_exec = (mqd_t) strtoul (optarg, NULL, 0);	\
+    break;
+
+static int
+do_after_exec (void)
+{
+  int result = 0;
+
+  struct mq_attr attr;
+  if (mq_getattr (after_exec, &attr) == 0)
+    {
+      puts ("mq_getattr after exec unexpectedly succeeded");
+      result = 1;
+    }
+  else if (errno != EBADF)
+    {
+      printf ("mq_getattr after exec did not fail with EBADF: %m\n");
+      result = 1;
+    }
+
+  return result;
+}
+
+static int
+do_test (int argc, char **argv)
+{
+  if (after_exec != (mqd_t) -1)
+    return do_after_exec ();
+
+  char name[sizeof "/tst-mqueue7-" + sizeof (pid_t) * 3];
+  snprintf (name, sizeof (name), "/tst-mqueue7-%u", getpid ());
+
+  struct mq_attr attr = { .mq_maxmsg = 10, .mq_msgsize = 1 };
+  mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_WRONLY, 0600, &attr);
+
+  if (q == (mqd_t) -1)
+    {
+      printf ("mq_open failed with: %m\n");
+      return 0;
+    }
+  else if (mq_unlink (name) != 0)
+    {
+      printf ("mq_unlink failed with: %m\n");
+      return 1;
+    }
+
+  if (mq_getattr (q, &attr) != 0)
+    {
+      printf ("mq_getattr failed: %m\n");
+      return 1;
+    }
+
+  char after_exec_arg[sizeof "--after-exec=0x" + sizeof (long) * 3];
+  snprintf (after_exec_arg, sizeof (after_exec_arg),
+	    "--after-exec=0x%lx", (long) q);
+
+  char *newargv[argc + 2];
+  for (int i = 1; i < argc; ++i)
+    newargv[i - 1] = argv[i];
+  newargv[argc - 1] = "--direct";
+  newargv[argc] = after_exec_arg;
+  newargv[argc + 1] = NULL;
+
+  /* Verify that exec* has the effect of mq_close (q).  */
+  execv (newargv[0], (char * const *) newargv);
+  printf ("execv failed: %m\n");
+  return 1;
+}
+
+#include "../test-skeleton.c"

	Jakub