Attachment 151891 Details for Bug 235521 – Testcase.

Testcase.

stopkills.c (text/plain), 4.26 KB, created by Jan Kratochvil on 2007-04-06 17:47:04 UTC

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Creator: Jan Kratochvil

Created: 2007-04-06 17:47:04 UTC

Size: 4.26 KB

patch

obsolete

>// This file is part of the program FRYSK.
>//
>// Copyright 2007, Red Hat Inc.
>//
>// FRYSK is free software; you can redistribute it and/or modify it
>// under the terms of the GNU General Public License as published by
>// the Free Software Foundation; version 2 of the License.
>//
>// FRYSK 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
>// General Public License for more details.
>// 
>// You should have received a copy of the GNU General Public License
>// along with FRYSK; if not, write to the Free Software Foundation,
>// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
>// 
>// In addition, as a special exception, Red Hat, Inc. gives You the
>// additional right to link the code of FRYSK with code not covered
>// under the GNU General Public License ("Non-GPL Code") and to
>// distribute linked combinations including the two, subject to the
>// limitations in this paragraph. Non-GPL Code permitted under this
>// exception must only link to the code of FRYSK through those well
>// defined interfaces identified in the file named EXCEPTION found in
>// the source code files (the "Approved Interfaces"). The files of
>// Non-GPL Code may instantiate templates or use macros or inline
>// functions from the Approved Interfaces without causing the
>// resulting work to be covered by the GNU General Public
>// License. Only Red Hat, Inc. may make changes or additions to the
>// list of Approved Interfaces. You must obey the GNU General Public
>// License in all respects for all of the FRYSK code and other code
>// used in conjunction with FRYSK except the Non-GPL Code covered by
>// this exception. If you modify this file, you may extend this
>// exception to your version of the file, but you are not obligated to
>// do so. If you do not wish to provide this exception without
>// modification, you must delete this exception statement from your
>// version and license this file solely under the GPL without
>// exception.
>
>// Here we fail on PTRACE_DETACH by ESRCH on kernel-2.6.20-1.3045.fc7.x86_64 .
>// The test passes on kernel.org linux-2.6.20.4.x86_64 .
>
>#include <unistd.h>
>#include <assert.h>
>#include <stdlib.h>
>#include <signal.h>
>#include <errno.h>
>#include <error.h>
>#include <stdio.h>
>#include <sys/ptrace.h>
>#include <sys/types.h>
>#include <sys/wait.h>
>#include <limits.h>
>#include <string.h>
>
>
>static void
>child_f (void)
>{
>  for (;;)
>    pause ();
>  /* NOTREACHED */
>  abort ();
>  /* NOTREACHED */
>}
>
>static pid_t child_pid;
>
>static void
>handler (int signo)
>{
>  kill (child_pid, SIGKILL);
>  //  abort ();
>  fprintf (stderr, "timeout\n");
>  exit (1);
>}
>
>int main (void)
>{
>  int i;
>  int status;
>  void (*handler_orig) (int signo);
>
>  child_pid = fork();
>  switch (child_pid)
>    {
>      case -1:
>        perror ("fork()");
>	exit (1);
>	/* NOTREACHED */
>      case 0:
>        child_f ();
>	/* NOTREACHED */
>	abort ();
>      default:;
>	/* PASSTHRU */
>    }
>  /* Parent.  */
>
>  sleep (1);
>
>  handler_orig = signal (SIGALRM, handler);
>  assert (handler_orig == SIG_DFL);
>  alarm (1);
>
>  i = ptrace (PTRACE_ATTACH, child_pid, NULL, NULL);
>  //assert (i == 0);
>  if (i != 0) error (1, errno, "PTRACE_ATTACH");
>  i = waitpid (child_pid, &status, 0);
>  //  assert (i == child_pid);
>  if (i != child_pid) {
>    if (-1 == i)  error (1, errno, "waitpid");
>    else {
>      fprintf (stderr, "waitpid pid mismatch\n");
>      exit (1);
>    }
>  }
>  //  assert (WIFSTOPPED (status) != 0);
>  if (WIFSTOPPED (status) == 0) {
>    fprintf (stderr, "WIFSTOPPED false\n");
>    exit (1);
>  }
>  //  assert (WSTOPSIG (status) == SIGSTOP);
>  if (WSTOPSIG (status) != SIGSTOP) {
>    fprintf (stderr, "WSTOPSIG !- SIGSTOP\n");
>    exit (1);
>  }
>
>  alarm (0);
>  handler_orig = signal (SIGALRM, handler_orig);
>  assert (handler_orig == handler);
>
>  sleep (1);
>
>  i = ptrace (PTRACE_CONT, child_pid, NULL, (void *) SIGSTOP);
>  //assert (i == 0);
>  if (i != 0) error (1, errno, "PTRACE_CONT SIGSTOP");
>
>  sleep (1);
>
>  // Here we fail on ESRCH on kernel-2.6.20-1.3045.fc7.x86_64 .
>  i = ptrace (PTRACE_DETACH, child_pid, NULL, NULL);
>  //assert (i == 0);
>  if (i != 0) error (1, errno, "PTRACE_DETACH");
>
>  // Process should be left running (not stopped) here.
>
>  //  puts ("OK");
>  kill (child_pid, SIGKILL);
>  //return 0;
>  exit (0);
>}

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Attachments on bug 235521: 151891 | 151898