+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.
+
2004-03-09 Ulrich Drepper <drepper@redhat.com>
* elf/dl-lookup.c (_dl_lookup_symbol_x): Fix possible NULL pointer
+2004-02-09 Jakub Jelinek <jakub@redhat.com>
+
+ * sysdeps/unix/sysv/linux/i386/vfork.S (SAVE_PID): Negate PID
+ if non-zero and set to INT_MIN if zero.
+ * sysdeps/unix/sysv/linux/x86_64/vfork.S (SAVE_PID): Likewise.
+ * sysdeps/unix/sysv/linux/i386/pt-vfork.S: Include tcb-offsets.h.
+ (SAVE_PID, RESTORE_PID): Define.
+ (__vfork): Use it.
+ * sysdeps/unix/sysv/linux/x86_64/pt-vfork.S: Include tcb-offsets.h.
+ Use relative path to avoid including NPTL i386/vfork.S.
+ (SAVE_PID, RESTORE_PID): Define.
+ * sysdeps/unix/sysv/linux/raise.c: Include limits.h.
+ (raise): Handle THREAD_SELF->pid INT_MIN the same as 0.
+ * Makefile (tests): Add tst-vfork1, tst-vfork2, tst-vfork1x and
+ tst-vfork2x.
+ (tests-reverse): Add tst-vfork1x and tst-vfork2x.
+ * tst-vfork1.c: New test.
+ * tst-vfork2.c: New test.
+ * tst-vfork1x.c: New test.
+ * tst-vfork2x.c: New test.
+
2004-03-08 Ulrich Drepper <drepper@redhat.com>
* sysdeps/i386/tcb-offsets.sym: Add PID.
tst-context1 \
tst-sched1 \
tst-backtrace1 \
- tst-oddstacklimit
+ tst-oddstacklimit \
+ tst-vfork1 tst-vfork2 tst-vfork1x tst-vfork2x
# Files which must not be linked with libpthread.
tests-nolibpthread = tst-unload
tests-static += tst-locale1 tst-locale2
endif
# These tests are linked with libc before libpthread
-tests-reverse += tst-cancel5 tst-cancel23
+tests-reverse += tst-cancel5 tst-cancel23 tst-vfork1x tst-vfork2x
include ../Rules
-/* Copyright (C) 1999, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2002, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@gnu.org>.
#define _ERRNO_H 1
#include <bits/errno.h>
#include <kernel-features.h>
+#include <tcb-offsets.h>
+
+/* Save the PID value. */
+#define SAVE_PID \
+ movl %gs:PID, %edx; \
+ movl %edx, %eax; \
+ negl %eax; \
+ movl %eax, %gs:PID
+
+/* Restore the old PID value in the parent. */
+#define RESTORE_PID \
+ testl %eax, %eax; \
+ je 1f; \
+ movl %edx, %gs:PID; \
+1:
/* Clone the calling process, but without copying the whole address space.
The calling process is suspended until the new process exits or is
/* Pop the return PC value into ECX. */
popl %ecx
+ SAVE_PID
+
/* Stuff the syscall number in EAX and enter into the kernel. */
movl $SYS_ify (vfork), %eax
int $0x80
+ RESTORE_PID
+
/* Jump to the return PC. Don't jump directly since this
disturbs the branch target cache. Instead push the return
address back on the stack. */
/* Save the PID value. */
#define SAVE_PID \
movl %gs:PID, %edx; \
- movl $-1, %gs:PID
+ movl %edx, %eax; \
+ negl %eax; \
+ jne 1f; \
+ movl $0x80000000, %eax; \
+1: movl %eax, %gs:PID
-/* Restore the old PID value in the parent. In the child store 0. */
+/* Restore the old PID value in the parent. */
#define RESTORE_PID \
testl %eax, %eax; \
je 1f; \
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
02111-1307 USA. */
#include <errno.h>
+#include <limits.h>
#include <signal.h>
#include <sysdep.h>
#include <nptl/pthreadP.h>
#if __ASSUME_TGKILL || defined __NR_tgkill
else
/* raise is an async-safe function. It could be called while the
- fork function temporarily invalidated the PID field. Adjust for
+ fork/vfork function temporarily invalidated the PID field. Adjust for
that. */
if (__builtin_expect (pid <= 0, 0))
- pid = pid == 0 ? selftid : -pid;
+ pid = (pid & INT_MAX) == 0 ? selftid : -pid;
#endif
#if __ASSUME_TGKILL
-#include <sysdeps/unix/sysv/linux/x86_64/vfork.S>
+/* Copyright (C) 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <tcb-offsets.h>
+
+#define SAVE_PID \
+ movl %fs:PID, %esi; \
+ movl %esi, %edx; \
+ negl %edx; \
+ movl %edx, %fs:PID
+
+#define RESTORE_PID \
+ testq %rax, %rax; \
+ je 1f; \
+ movl %esi, %fs:PID; \
+1:
+
+#include <../../../../../../sysdeps/unix/sysv/linux/x86_64/vfork.S>
#define SAVE_PID \
movl %fs:PID, %esi; \
- movl $-1, %fs:PID
+ movl $0x80000000, %ecx; \
+ movl %esi, %edx; \
+ negl %edx; \
+ cmove %ecx, %edx; \
+ movl %edx, %fs:PID
#define RESTORE_PID \
testq %rax, %rax; \
--- /dev/null
+#include <posix/tst-vfork1.c>
--- /dev/null
+#include <posix/tst-vfork1.c>
--- /dev/null
+#include <posix/tst-vfork2.c>
--- /dev/null
+#include <posix/tst-vfork2.c>
bug-regex17 bug-regex18 bug-regex19 bug-regex20 \
bug-regex21 bug-regex22 bug-regex23 tst-nice tst-nanosleep \
transbug tst-rxspencer tst-pcre tst-boost \
- bug-ga1 tst-vfork1
+ bug-ga1 tst-vfork1 tst-vfork2
xtests := bug-ga2
ifeq (yes,$(build-shared))
test-srcs := globtest
-/* 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.
#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)
{
--- /dev/null
+/* 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"
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