2 * Copyright (c) 2020 Alfredo Dal'Ava Junior <alfredo@freebsd.org>
3 * Copyright (c) 2017 Enji Cooper <ngie@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * From: FreeBSD: src/lib/libkvm/tests/kvm_geterr_test.c
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/sysctl.h>
44 #include "kvm_test_common.h"
46 ATF_TC(kvm_read_positive_test_no_error);
47 ATF_TC_HEAD(kvm_read_positive_test_no_error, tc)
50 atf_tc_set_md_var(tc, "descr",
51 "test that kvm_read returns a sane value");
52 atf_tc_set_md_var(tc, "require.user", "root");
55 ATF_TC_BODY(kvm_read_positive_test_no_error, tc)
59 #define SYMNAME "_mp_maxcpus"
61 { SYMNAME, 0, 0, 0, 0 },
65 int sysctl_maxcpus, mp_maxcpus, retcode;
66 size_t len = sizeof(sysctl_maxcpus);
69 kd = kvm_open(NULL, NULL, NULL, O_RDONLY, errbuf);
70 ATF_CHECK(!errbuf_has_error(errbuf));
71 ATF_REQUIRE_MSG(kd != NULL, "kvm_open failed: %s", errbuf);
72 retcode = kvm_nlist(kd, nl);
73 ATF_REQUIRE_MSG(retcode != -1,
74 "kvm_nlist failed (returned %d): %s", retcode, kvm_geterr(kd));
75 if (nl[X_MAXCPUS].n_type == 0)
76 atf_tc_skip("symbol (\"%s\") couldn't be found", SYMNAME);
78 rc = kvm_read(kd, nl[X_MAXCPUS].n_value, &mp_maxcpus,
81 ATF_REQUIRE_MSG(rc != -1, "kvm_read failed: %s", kvm_geterr(kd));
82 ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
85 /* Check if value read from kvm_read is sane */
86 retcode = sysctlbyname("kern.smp.maxcpus", &sysctl_maxcpus, &len, NULL, 0);
87 ATF_REQUIRE_MSG(retcode == 0, "sysctl read failed : %d", retcode);
88 ATF_REQUIRE_EQ_MSG(mp_maxcpus, sysctl_maxcpus,
89 "failed: kvm_read of mp_maxcpus returned %d but sysctl maxcpus returned %d",
90 mp_maxcpus, sysctl_maxcpus);
96 ATF_TP_ADD_TC(tp, kvm_read_positive_test_no_error);
97 return (atf_no_error());