1 /* $NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $ */
2
3 /*-
4 * Copyright (c) 2008 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 CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __COPYRIGHT("@(#) Copyright (c) 2008\
31 The NetBSD Foundation, inc. All rights reserved.");
32 __RCSID("$NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $");
33
34 #include <atf-c.h>
35 #include <errno.h>
36 #include <stdarg.h>
37 #include <stdlib.h>
38 #include <ucontext.h>
39
40 #define STACKSZ (10*1024)
41 #define DEPTH 3
42
43 static int calls;
44
45 static void
run(int n,...)46 run(int n, ...)
47 {
48 va_list va;
49 int i, ia;
50
51 ATF_REQUIRE_EQ(n, DEPTH - calls - 1);
52
53 va_start(va, n);
54 for (i = 0; i < 9; i++) {
55 ia = va_arg(va, int);
56 ATF_REQUIRE_EQ(i, ia);
57 }
58 va_end(va);
59
60 calls++;
61 }
62
63 ATF_TC(getcontext_err);
ATF_TC_HEAD(getcontext_err,tc)64 ATF_TC_HEAD(getcontext_err, tc)
65 {
66 atf_tc_set_md_var(tc, "descr", "Test errors from getcontext(2)");
67 }
68
ATF_TC_BODY(getcontext_err,tc)69 ATF_TC_BODY(getcontext_err, tc)
70 {
71
72 errno = 0;
73 ATF_REQUIRE_ERRNO(EFAULT, getcontext((void *)-1) == -1);
74 }
75
76 ATF_TC(setcontext_err);
ATF_TC_HEAD(setcontext_err,tc)77 ATF_TC_HEAD(setcontext_err, tc)
78 {
79 atf_tc_set_md_var(tc, "descr", "Test errors from setcontext(2)");
80 }
81
ATF_TC_BODY(setcontext_err,tc)82 ATF_TC_BODY(setcontext_err, tc)
83 {
84
85 errno = 0;
86 ATF_REQUIRE_ERRNO(EFAULT, setcontext((void *)-1) == -1);
87 }
88
89 ATF_TC(setcontext_link);
ATF_TC_HEAD(setcontext_link,tc)90 ATF_TC_HEAD(setcontext_link, tc)
91 {
92
93 atf_tc_set_md_var(tc, "descr",
94 "Checks get/make/setcontext(), context linking via uc_link(), "
95 "and argument passing to the new context");
96 }
97
ATF_TC_BODY(setcontext_link,tc)98 ATF_TC_BODY(setcontext_link, tc)
99 {
100 ucontext_t uc[DEPTH];
101 ucontext_t save;
102 volatile int i = 0; /* avoid longjmp clobbering */
103
104 for (i = 0; i < DEPTH; ++i) {
105 ATF_REQUIRE_EQ(getcontext(&uc[i]), 0);
106
107 uc[i].uc_stack.ss_sp = malloc(STACKSZ);
108 uc[i].uc_stack.ss_size = STACKSZ;
109 uc[i].uc_link = (i > 0) ? &uc[i - 1] : &save;
110
111 makecontext(&uc[i], (void *)run, 10, i,
112 0, 1, 2, 3, 4, 5, 6, 7, 8);
113 }
114
115 ATF_REQUIRE_EQ(getcontext(&save), 0);
116
117 if (calls == 0)
118 ATF_REQUIRE_EQ(setcontext(&uc[DEPTH-1]), 0);
119 }
120
ATF_TP_ADD_TCS(tp)121 ATF_TP_ADD_TCS(tp)
122 {
123
124 ATF_TP_ADD_TC(tp, getcontext_err);
125 ATF_TP_ADD_TC(tp, setcontext_err);
126 ATF_TP_ADD_TC(tp, setcontext_link);
127
128 return atf_no_error();
129 }
130