99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
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/*-
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* Copyright (c) 2020 Alfredo Dal'Ava Junior <alfredo@freebsd.org>
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* Copyright (c) 2017 Enji Cooper <ngie@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* From: FreeBSD: src/lib/libkvm/tests/kvm_geterr_test.c
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <kvm.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <atf-c.h>
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#include "kvm_test_common.h"
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ATF_TC(kvm_read_positive_test_no_error);
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ATF_TC_HEAD(kvm_read_positive_test_no_error, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"test that kvm_read returns a sane value");
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atf_tc_set_md_var(tc, "require.user", "root");
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}
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ATF_TC_BODY(kvm_read_positive_test_no_error, tc)
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{
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kvm_t *kd;
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struct nlist nl[] = {
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#define SYMNAME "_mp_maxcpus"
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#define X_MAXCPUS 0
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{ SYMNAME, 0, 0, 0, 0 },
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{ NULL, 0, 0, 0, 0 },
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};
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ssize_t rc;
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int sysctl_maxcpus, mp_maxcpus, retcode;
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size_t len = sizeof(sysctl_maxcpus);
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errbuf_clear();
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kd = kvm_open(NULL, NULL, NULL, O_RDONLY, errbuf);
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ATF_CHECK(!errbuf_has_error(errbuf));
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ATF_REQUIRE_MSG(kd != NULL, "kvm_open failed: %s", errbuf);
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retcode = kvm_nlist(kd, nl);
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ATF_REQUIRE_MSG(retcode != -1,
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"kvm_nlist failed (returned %d): %s", retcode, kvm_geterr(kd));
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if (nl[X_MAXCPUS].n_type == 0)
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atf_tc_skip("symbol (\"%s\") couldn't be found", SYMNAME);
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rc = kvm_read(kd, nl[X_MAXCPUS].n_value, &mp_maxcpus,
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sizeof(mp_maxcpus));
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ATF_REQUIRE_MSG(rc != -1, "kvm_read failed: %s", kvm_geterr(kd));
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ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
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strerror(errno));
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/* Check if value read from kvm_read is sane */
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retcode = sysctlbyname("kern.smp.maxcpus", &sysctl_maxcpus, &len, NULL, 0);
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ATF_REQUIRE_MSG(retcode == 0, "sysctl read failed : %d", retcode);
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ATF_REQUIRE_EQ_MSG(mp_maxcpus, sysctl_maxcpus,
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"failed: kvm_read of mp_maxcpus returned %d but sysctl maxcpus returned %d",
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mp_maxcpus, sysctl_maxcpus);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, kvm_read_positive_test_no_error);
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return (atf_no_error());
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}
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