/usr/src/blcr-0.8.2/tests/orphan.c is in blcr-dkms 0.8.2-15ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | /*
* Berkeley Lab Checkpoint/Restart (BLCR) for Linux is Copyright (c)
* 2006, The Regents of the University of California, through Lawrence
* Berkeley National Laboratory (subject to receipt of any required
* approvals from the U.S. Dept. of Energy). All rights reserved.
*
* Portions may be copyrighted by others, as may be noted in specific
* copyright notices within specific files.
*
* This program 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: orphan.c,v 1.5 2008/08/29 21:36:53 phargrov Exp $
*
* Test of pipes w/ orphaned grandchild (a child of init).
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include "crut.h"
enum {
MSG_PARENT_READY = 1,
MSG_ORPHAN_GOOD,
MSG_ORPHAN_BAD,
MSG_CHILD_DONE
};
static void sigpipe(int signo) {
fprintf(stderr, "%d exiting on SIGPIPE\n", getpid());
exit(-1);
}
static int
orphan_setup(void **p)
{
struct crut_pipes *pipes = malloc(sizeof(*pipes));
int retval;
signal(SIGPIPE, &sigpipe);
retval = crut_pipes_fork(pipes);
if (!retval) {
/* In the child */
int pid = fork();
if (pid < 0) {
exit (-1);
} else if (!pid) {
/* In the grandchild */
while (1) {
CRUT_DEBUG("Orphan entering read()");
crut_pipes_expect(pipes, MSG_PARENT_READY);
CRUT_DEBUG("Orphan sees ppid %d", getppid());
crut_pipes_putchar(pipes, (getppid() == 1) ? MSG_ORPHAN_GOOD : MSG_ORPHAN_BAD);
}
exit(-1); // unreached
} else {
CRUT_DEBUG("Forked grandchild %d", pid);
}
exit(MSG_CHILD_DONE);
}
crut_waitpid_expect(pipes->child, MSG_CHILD_DONE);
crut_pipes_putchar(pipes, MSG_PARENT_READY);
crut_pipes_expect(pipes, MSG_ORPHAN_GOOD);
*p = pipes;
return retval;
}
static int
orphan_precheckpoint(void *p)
{
struct crut_pipes *pipes = p;
int retval = 0;
CRUT_DEBUG("Getting ready to checkpoint");
crut_pipes_putchar(pipes, MSG_PARENT_READY);
crut_pipes_expect(pipes, MSG_ORPHAN_GOOD);
return retval;
}
static int
orphan_continue(void *p)
{
struct crut_pipes *pipes = p;
int retval = 0;
CRUT_DEBUG("Continuing after checkpoint.");
crut_pipes_putchar(pipes, MSG_PARENT_READY);
crut_pipes_expect(pipes, MSG_ORPHAN_GOOD);
return retval;
}
static int
orphan_restart(void *p)
{
struct crut_pipes *pipes = p;
int retval = 0;
CRUT_DEBUG("Restarting from checkpoint.");
crut_pipes_putchar(pipes, MSG_PARENT_READY);
crut_pipes_expect(pipes, MSG_ORPHAN_GOOD);
return retval;
}
int
main(int argc, char *argv[])
{
int ret;
struct crut_operations orphan_test_ops = {
test_scope:CR_SCOPE_PGRP,
test_name:"orphan",
test_description:"Orphan tester. Tests BLCR recovery of children of init.",
test_setup:orphan_setup,
test_precheckpoint:orphan_precheckpoint,
test_continue:orphan_continue,
test_restart:orphan_restart,
test_teardown:NULL,
};
/* add the test */
crut_add_test(&orphan_test_ops);
ret = crut_main(argc, argv);
return ret;
}
|