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
54 static void
locktest(const atf_tc_t * tc,enum locktest lt,int needld,const char * expect)55 locktest(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
110 LOCKFUN(DESTROYHELD, "destroy lock while held", 0,
111 "mutex error: mutex_destroy,.*: is locked or in use");
112 LOCKFUN(DOUBLEFREE, "free lock twice", 0,
113 "panic: mutex_destroy,.*: uninitialized lock");
114 LOCKFUN(DOUBLEINIT, "init lock twice", 1,
115 "mutex error: .*mutex_init,.*: already initialized");
116 LOCKFUN(MEMFREE, "free memory active lock is in", 1,
117 "mutex error: kmem_intr_free,.*: allocation contains active lock");
118 LOCKFUN(MTX, "locking-against-self mutex", 0,
119 "mutex error: mutex_enter,.*: locking against myself");
120 LOCKFUN(RWDOUBLEX, "locking-against-self exclusive rwlock", 0,
121 "rwlock error: rw_enter,.*: locking against myself");
122 LOCKFUN(RWRX, "rw: first shared, then exclusive", 1,
123 "rwlock error: rw_enter,.*: locking against myself");
124 LOCKFUN(RWXR, "rw: first execusive, then shared", 0,
125 "rwlock error: rw_enter,.*: locking against myself");
126
ATF_TP_ADD_TCS(tp)127 ATF_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