/usr/src/blcr-0.8.5/tests/sigaltstack.c is in blcr-dkms 0.8.5-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Berkeley Lab Checkpoint/Restart (BLCR) for Linux is Copyright (c)
* 2003, 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: sigaltstack.c,v 1.1 2008/11/26 07:11:48 phargrov Exp $
*
* CRUT test of sigaltstack()
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <signal.h>
#include <sys/mman.h>
#include "crut.h"
static int
checkit(const char *where, stack_t *st)
{
stack_t tmp;
int rc;
rc = sigaltstack(NULL, &tmp);
if (rc < 0) {
CRUT_FAIL("%s: sigaltstack(get) failed.", where);
return -1;
}
rc = 0;
if (st->ss_size != tmp.ss_size) {
CRUT_FAIL("%s: ss_size changed.", where);
rc = -1;
}
if (st->ss_sp != tmp.ss_sp) {
CRUT_FAIL("%s: ss_sp changed.", where);
rc = -1;
}
if (st->ss_flags != tmp.ss_flags) {
CRUT_FAIL("%s: ss_flags changed.", where);
rc = -1;
}
return rc;
}
static int my_callback(void *stack2) {
stack_t st;
int rc;
st.ss_flags = 0;
st.ss_size = SIGSTKSZ;
st.ss_sp = stack2;
rc = sigaltstack(&st, NULL);
if (rc < 0) {
CRUT_FAIL("sigaltstack(set2) failed.");
return -1;
}
cr_checkpoint(CR_CHECKPOINT_READY);
return checkit("callback", &st);
}
static int
sigaltstack_setup(void **testdata)
{
stack_t *st;
void *stack1, *stack2;
int rc;
CRUT_DEBUG("Initializing sigaltstack.");
stack1 = mmap (NULL, SIGSTKSZ, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (stack1 == MAP_FAILED) {
CRUT_FAIL("mmap(stack1) failed.");
return -1;
}
stack2 = mmap (NULL, SIGSTKSZ, PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (stack2 == MAP_FAILED) {
CRUT_FAIL("mmap(stack2) failed.");
return -1;
}
cr_register_callback(my_callback, stack2, CR_THREAD_CONTEXT);
st = malloc(sizeof(stack_t));
if (st == NULL) {
CRUT_FAIL("malloc() failed.");
return -1;
}
st->ss_flags = 0;
st->ss_size = SIGSTKSZ;
st->ss_sp = stack1;
rc = sigaltstack(st, NULL);
if (rc < 0) {
CRUT_FAIL("sigaltstack(set) failed.");
return -1;
}
*testdata = st;
return 0;
}
static int
sigaltstack_precheckpoint(void *p)
{
CRUT_DEBUG("Testing sanity before we checkpoint");
return checkit("precheckpoint", (stack_t *)p);
}
static int
sigaltstack_continue(void *p)
{
CRUT_DEBUG("Continuing after checkpoint.");
return checkit("continue", (stack_t *)p);
}
static int
sigaltstack_restart(void *p)
{
CRUT_DEBUG("Restarting from checkpoint.");
return checkit("restart", (stack_t *)p);
}
int
main(int argc, char *argv[])
{
int ret;
struct crut_operations sigaltstack_test_ops = {
test_scope:CR_SCOPE_PROC,
test_name:"sigaltstack",
test_description:"Test of sigaltstack.",
test_setup:sigaltstack_setup,
test_precheckpoint:sigaltstack_precheckpoint,
test_continue:sigaltstack_continue,
test_restart:sigaltstack_restart,
test_teardown:NULL,
};
/* add the basic tests */
crut_add_test(&sigaltstack_test_ops);
ret = crut_main(argc, argv);
return ret;
}
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