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#!/bin/sh
#
# Copyright (c) 2025 Peter Holm <pho@FreeBSD.org>
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Based on msdos11.sh
. ../default.cfg
set -u
prog=$(basename "$0" .sh)
log=/tmp/$prog.log
cat > /tmp/$prog.c <<EOF
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdatomic.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
static _Atomic(int) *share;
#define PARALLEL 3
#define RUNTIME (2 * 60)
#define SYNC 0
static void
test(void)
{
time_t start;
atomic_fetch_add(&share[SYNC], 1);
while (share[SYNC] != PARALLEL)
;
start = time(NULL);
while ((time(NULL) - start) < 30) {
mkdir("a", 0755);
rename("a", "b");
rmdir("b");
}
_exit(0);
}
int
main(void)
{
pid_t pids[PARALLEL];
size_t len;
time_t start;
int e, i, status;
e = 0;
len = PAGE_SIZE;
if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
err(1, "mmap");
start = time(NULL);
while ((time(NULL) - start) < RUNTIME && e == 0) {
share[SYNC] = 0;
for (i = 0; i < PARALLEL; i++) {
if ((pids[i] = fork()) == 0)
test();
if (pids[i] == -1)
err(1, "fork()");
}
for (i = 0; i < PARALLEL; i++) {
if (waitpid(pids[i], &status, 0) == -1)
err(1, "waitpid(%d)", pids[i]);
if (status != 0) {
if (WIFSIGNALED(status))
fprintf(stderr,
"pid %d exit signal %d\n",
pids[i], WTERMSIG(status));
}
e += status == 0 ? 0 : 1;
}
}
return (e);
}
EOF
mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c || exit 1
set -e
mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
mdconfig -a -t swap -s 512m -u $mdstart
newfs $newfs_flags md$mdstart > /dev/null
mount /dev/md$mdstart $mntpoint
set +e
here=`pwd`
(cd $here/../testcases/swap; ./swap -t 2m -i 20 -l 100 > /dev/null) &
sleep .5
cd $mntpoint
/tmp/$prog; s=$?
cd -
wait
umount $mntpoint
fsck_ffs /dev/md$mdstart > $log 2>&1
grep -Eq "WAS MODIFIED" $log && { cat $log; s=32; }
mdconfig -d -u $mdstart
rm -f /tmp/$prog /tmp/$prog.c $log
exit $s
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