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authorUlrich Drepper <drepper@redhat.com>2004-03-10 05:25:48 +0000
committerUlrich Drepper <drepper@redhat.com>2004-03-10 05:25:48 +0000
commit8b9d605485be779bb03778e780e9875525ec2ca4 (patch)
tree38c566c233a1d11a10b2bb68a488dfd9e17e9b04 /posix
parent9363dbb847a7e29d1abfffabc59fb142cf956df2 (diff)
Update.
2004-02-09 Jakub Jelinek <jakub@redhat.com> * posix/Makefile (tests): Add tst-vfork2. * posix/tst-vfork1.c (do_test): Fix comment. * posix/tst-vfork2.c: New test.
Diffstat (limited to 'posix')
-rw-r--r--posix/Makefile2
-rw-r--r--posix/tst-vfork1.c4
-rw-r--r--posix/tst-vfork2.c199
3 files changed, 202 insertions, 3 deletions
diff --git a/posix/Makefile b/posix/Makefile
index 63f89ed0c0..fd9f6bfc23 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -81,7 +81,7 @@ tests := tstgetopt testfnm runtests runptests \
bug-regex17 bug-regex18 bug-regex19 bug-regex20 \
bug-regex21 bug-regex22 bug-regex23 tst-nice tst-nanosleep \
transbug tst-rxspencer tst-pcre tst-boost \
- bug-ga1 tst-vfork1
+ bug-ga1 tst-vfork1 tst-vfork2
xtests := bug-ga2
ifeq (yes,$(build-shared))
test-srcs := globtest
diff --git a/posix/tst-vfork1.c b/posix/tst-vfork1.c
index 4c2d131a32..1f36f1ff2d 100644
--- a/posix/tst-vfork1.c
+++ b/posix/tst-vfork1.c
@@ -1,4 +1,4 @@
-/* Test for chmod functions.
+/* Test for vfork functions.
Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
@@ -26,7 +26,7 @@
#include <sys/wait.h>
/* This test relies on non-POSIX functionality since the child
- processes call write. */
+ processes call write and getpid. */
static int
do_test (void)
{
diff --git a/posix/tst-vfork2.c b/posix/tst-vfork2.c
new file mode 100644
index 0000000000..1d096e14a3
--- /dev/null
+++ b/posix/tst-vfork2.c
@@ -0,0 +1,199 @@
+/* Test for vfork functions.
+ Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@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 <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int raise_fail;
+
+static void
+alrm (int sig)
+{
+ if (raise (SIGUSR1) < 0)
+ raise_fail = 1;
+}
+
+/* This test relies on non-POSIX functionality since the child
+ processes call write, nanosleep and getpid. */
+static int
+do_test (void)
+{
+ int result = 0;
+ int fd[2];
+
+ signal (SIGUSR1, SIG_IGN);
+
+ struct sigaction sa;
+ sa.sa_handler = alrm;
+ sigemptyset (&sa.sa_mask);
+ sa.sa_flags = 0;
+ if (sigaction (SIGALRM, &sa, NULL) < 0)
+ {
+ puts ("couldn't set up SIGALRM handler");
+ return 1;
+ }
+
+ if (pipe (fd) == -1)
+ {
+ puts ("pipe failed");
+ return 1;
+ }
+
+ struct itimerval it;
+ it.it_value.tv_sec = 0;
+ it.it_value.tv_usec = 200 * 1000;
+ it.it_interval = it.it_value;
+ if (setitimer (ITIMER_REAL, &it, NULL) < 0)
+ {
+ puts ("couldn't set up timer");
+ return 1;
+ }
+
+ /* First vfork() without previous getpid(). */
+ pid_t p1;
+ if ((p1 = vfork ()) == 0)
+ {
+ pid_t p = getpid ();
+
+ struct timespec ts;
+ ts.tv_sec = 1;
+ ts.tv_nsec = 0;
+ TEMP_FAILURE_RETRY (nanosleep (&ts, &ts));
+ _exit (TEMP_FAILURE_RETRY (write (fd[1], &p, sizeof (p))) != sizeof (p));
+ }
+ else if (p1 == -1)
+ {
+ puts ("1st vfork failed");
+ result = 1;
+ }
+
+ memset (&it, 0, sizeof (it));
+ setitimer (ITIMER_REAL, &it, NULL);
+
+ pid_t p2 = 0;
+ if (TEMP_FAILURE_RETRY (read (fd[0], &p2, sizeof (pid_t))) != sizeof (pid_t))
+ {
+ puts ("1st read failed");
+ result = 1;
+ }
+ int r;
+ if (TEMP_FAILURE_RETRY (waitpid (p1, &r, 0)) != p1)
+ {
+ puts ("1st waitpid failed");
+ result = 1;
+ }
+ else if (r != 0)
+ {
+ puts ("write in 1st child failed");
+ result = 1;
+ }
+
+ /* Main process' ID. */
+ pid_t p0 = getpid ();
+
+ /* vfork() again, but after a getpid() in the main process. */
+ pid_t p3;
+ if ((p3 = vfork ()) == 0)
+ {
+ pid_t p = getpid ();
+ _exit (TEMP_FAILURE_RETRY (write (fd[1], &p, sizeof (p))) != sizeof (p));
+ }
+ else if (p1 == -1)
+ {
+ puts ("2nd vfork failed");
+ result = 1;
+ }
+
+ pid_t p4;
+ if (TEMP_FAILURE_RETRY (read (fd[0], &p4, sizeof (pid_t))) != sizeof (pid_t))
+ {
+ puts ("2nd read failed");
+ result = 1;
+ }
+ if (TEMP_FAILURE_RETRY (waitpid (p3, &r, 0)) != p3)
+ {
+ puts ("2nd waitpid failed");
+ result = 1;
+ }
+ else if (r != 0)
+ {
+ puts ("write in 2nd child failed");
+ result = 1;
+ }
+
+ /* And getpid in the main process again. */
+ pid_t p5 = getpid ();
+
+ /* Analysis of the results. */
+ if (p0 != p5)
+ {
+ printf ("p0(%ld) != p5(%ld)\n", (long int) p0, (long int) p5);
+ result = 1;
+ }
+
+ if (p0 == p1)
+ {
+ printf ("p0(%ld) == p1(%ld)\n", (long int) p0, (long int) p1);
+ result = 1;
+ }
+
+ if (p1 != p2)
+ {
+ printf ("p1(%ld) != p2(%ld)\n", (long int) p1, (long int) p2);
+ result = 1;
+ }
+
+ if (p0 == p3)
+ {
+ printf ("p0(%ld) == p3(%ld)\n", (long int) p0, (long int) p3);
+ result = 1;
+ }
+
+ if (p3 != p4)
+ {
+ printf ("p3(%ld) != p4(%ld)\n", (long int) p3, (long int) p4);
+ result = 1;
+ }
+
+ close (fd[0]);
+ close (fd[1]);
+
+ if (raise_fail)
+ {
+ puts ("raise failed");
+ result = 1;
+ }
+
+ if (result == 0)
+ puts ("All OK");
+
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"