/* $NetBSD: t_kern.c,v 1.6 2020/08/28 19:29:58 martin Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/wait.h>
#include <rump/rump.h>
#include <atf-c.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <regex.h>
#include "h_macros.h"
#include "../kernspace/kernspace.h"
#define LOCKFUN(_name_, _descr_,_needld_, _expect_) \
ATF_TC(lockme_##_name_); \
ATF_TC_HEAD(lockme_##_name_, tc) { \
atf_tc_set_md_var(tc, "descr", _descr_); \
} \
ATF_TC_BODY(lockme_##_name_, tc) { \
locktest(tc, LOCKME_##_name_, _needld_, _expect_); \
}
static void
locktest(const atf_tc_t *tc, enum locktest lt, int needld, const char *expect)
{
extern const int rump_lockdebug;
int pipetti[2];
int status;
ssize_t len;
regex_t preg;
if (needld && !rump_lockdebug)
atf_tc_skip("test requires LOCKDEBUG kernel");
RL(pipe(pipetti));
switch (fork()) {
case 0:
RL(dup2(pipetti[1], STDOUT_FILENO));
RL(dup2(pipetti[1], STDOUT_FILENO));
rump_init();
rump_schedule();
rumptest_lockme(lt);
rump_unschedule();
break;
default:
RL(wait(&status));
ATF_REQUIRE(WIFSIGNALED(status) && WTERMSIG(status) == SIGABRT);
if (rump_lockdebug) {
char buf[8192];
len = read(pipetti[0], buf, sizeof(buf) - 1);
ATF_REQUIRE(len > 0);
buf[len] = '\0';
/*
* We use regex matching here, since the rump
* kernel messages include routine names and line
* numbers which may not remain constant.
*/
if ((status = regcomp(&preg, expect, REG_BASIC)) != 0) {
regerror(status, &preg, buf, sizeof(buf));
printf("regcomp error: %s\n", buf);
atf_tc_fail("regcomp failed");
}
if ((status = regexec(&preg, buf, 0, NULL, 0)) != 0) {
printf("expected: \"%s\"\n", expect);
printf("received: \"%s\"\n", buf);
regerror(status, &preg, buf, sizeof(buf));
printf("regexec error: %s\n", buf);
atf_tc_fail("unexpected output");
}
regfree(&preg);
}
break;
case -1:
atf_tc_fail("fork");
}
}
LOCKFUN(DESTROYHELD, "destroy lock while held", 0,
"mutex error: mutex_destroy,.*: is locked or in use");
LOCKFUN(DOUBLEFREE, "free lock twice", 0,
"panic: mutex_destroy,.*: uninitialized lock");
LOCKFUN(DOUBLEINIT, "init lock twice", 1,
"mutex error: .*mutex_init,.*: already initialized");
LOCKFUN(MEMFREE, "free memory active lock is in", 1,
"mutex error: kmem_intr_free,.*: allocation contains active lock");
LOCKFUN(MTX, "locking-against-self mutex", 0,
"mutex error: mutex_enter,.*: locking against myself");
LOCKFUN(RWDOUBLEX, "locking-against-self exclusive rwlock", 0,
"rwlock error: rw_enter,.*: locking against myself");
LOCKFUN(RWRX, "rw: first shared, then exclusive", 1,
"rwlock error: rw_enter,.*: locking against myself");
LOCKFUN(RWXR, "rw: first execusive, then shared", 0,
"rwlock error: rw_enter,.*: locking against myself");
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, lockme_MTX);
ATF_TP_ADD_TC(tp, lockme_RWDOUBLEX);
ATF_TP_ADD_TC(tp, lockme_RWRX);
ATF_TP_ADD_TC(tp, lockme_RWXR);
ATF_TP_ADD_TC(tp, lockme_DOUBLEINIT);
ATF_TP_ADD_TC(tp, lockme_DOUBLEFREE);
ATF_TP_ADD_TC(tp, lockme_DESTROYHELD);
ATF_TP_ADD_TC(tp, lockme_MEMFREE);
return atf_no_error();
}