t_kern.c revision 1.6
1/* $NetBSD: t_kern.c,v 1.6 2020/08/28 19:29:58 martin Exp $ */ 2 3/*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 17 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#include <sys/types.h> 31#include <sys/signal.h> 32#include <sys/wait.h> 33 34#include <rump/rump.h> 35 36#include <atf-c.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <unistd.h> 40#include <regex.h> 41 42#include "h_macros.h" 43#include "../kernspace/kernspace.h" 44 45#define LOCKFUN(_name_, _descr_,_needld_, _expect_) \ 46 ATF_TC(lockme_##_name_); \ 47 ATF_TC_HEAD(lockme_##_name_, tc) { \ 48 atf_tc_set_md_var(tc, "descr", _descr_); \ 49 } \ 50 ATF_TC_BODY(lockme_##_name_, tc) { \ 51 locktest(tc, LOCKME_##_name_, _needld_, _expect_); \ 52 } 53 54static void 55locktest(const atf_tc_t *tc, enum locktest lt, int needld, const char *expect) 56{ 57 extern const int rump_lockdebug; 58 int pipetti[2]; 59 int status; 60 ssize_t len; 61 regex_t preg; 62 63 if (needld && !rump_lockdebug) 64 atf_tc_skip("test requires LOCKDEBUG kernel"); 65 RL(pipe(pipetti)); 66 67 switch (fork()) { 68 case 0: 69 RL(dup2(pipetti[1], STDOUT_FILENO)); 70 RL(dup2(pipetti[1], STDOUT_FILENO)); 71 rump_init(); 72 rump_schedule(); 73 rumptest_lockme(lt); 74 rump_unschedule(); 75 break; 76 default: 77 RL(wait(&status)); 78 ATF_REQUIRE(WIFSIGNALED(status) && WTERMSIG(status) == SIGABRT); 79 if (rump_lockdebug) { 80 char buf[8192]; 81 82 len = read(pipetti[0], buf, sizeof(buf) - 1); 83 ATF_REQUIRE(len > 0); 84 buf[len] = '\0'; 85 /* 86 * We use regex matching here, since the rump 87 * kernel messages include routine names and line 88 * numbers which may not remain constant. 89 */ 90 if ((status = regcomp(&preg, expect, REG_BASIC)) != 0) { 91 regerror(status, &preg, buf, sizeof(buf)); 92 printf("regcomp error: %s\n", buf); 93 atf_tc_fail("regcomp failed"); 94 } 95 if ((status = regexec(&preg, buf, 0, NULL, 0)) != 0) { 96 printf("expected: \"%s\"\n", expect); 97 printf("received: \"%s\"\n", buf); 98 regerror(status, &preg, buf, sizeof(buf)); 99 printf("regexec error: %s\n", buf); 100 atf_tc_fail("unexpected output"); 101 } 102 regfree(&preg); 103 } 104 break; 105 case -1: 106 atf_tc_fail("fork"); 107 } 108} 109 110LOCKFUN(DESTROYHELD, "destroy lock while held", 0, 111 "mutex error: mutex_destroy,.*: is locked or in use"); 112LOCKFUN(DOUBLEFREE, "free lock twice", 0, 113 "panic: mutex_destroy,.*: uninitialized lock"); 114LOCKFUN(DOUBLEINIT, "init lock twice", 1, 115 "mutex error: .*mutex_init,.*: already initialized"); 116LOCKFUN(MEMFREE, "free memory active lock is in", 1, 117 "mutex error: kmem_intr_free,.*: allocation contains active lock"); 118LOCKFUN(MTX, "locking-against-self mutex", 0, 119 "mutex error: mutex_enter,.*: locking against myself"); 120LOCKFUN(RWDOUBLEX, "locking-against-self exclusive rwlock", 0, 121 "rwlock error: rw_enter,.*: locking against myself"); 122LOCKFUN(RWRX, "rw: first shared, then exclusive", 1, 123 "rwlock error: rw_enter,.*: locking against myself"); 124LOCKFUN(RWXR, "rw: first execusive, then shared", 0, 125 "rwlock error: rw_enter,.*: locking against myself"); 126 127ATF_TP_ADD_TCS(tp) 128{ 129 130 ATF_TP_ADD_TC(tp, lockme_MTX); 131 ATF_TP_ADD_TC(tp, lockme_RWDOUBLEX); 132 ATF_TP_ADD_TC(tp, lockme_RWRX); 133 ATF_TP_ADD_TC(tp, lockme_RWXR); 134 ATF_TP_ADD_TC(tp, lockme_DOUBLEINIT); 135 ATF_TP_ADD_TC(tp, lockme_DOUBLEFREE); 136 ATF_TP_ADD_TC(tp, lockme_DESTROYHELD); 137 ATF_TP_ADD_TC(tp, lockme_MEMFREE); 138 139 return atf_no_error(); 140} 141