Author: alfredo Date: Wed Jul 8 18:58:44 2020 New Revision: 363020 URL: https://svnweb.freebsd.org/changeset/base/363020
Log: test: add libkvm read test This test checks if value received from kvm_read is sane, based on value returned by sysctl interface. This should catch regression on bug fixed by r359160 Reviewed by: jhb Approved by: jhibbits (mentor) MFC after: 1 week Sponsored by: Eldorado Research Institute (eldorado.org.br) Differential Revision: https://reviews.freebsd.org/D23783 Added: head/lib/libkvm/tests/kvm_read_test.c (contents, props changed) Modified: head/lib/libkvm/tests/Makefile Modified: head/lib/libkvm/tests/Makefile ============================================================================== --- head/lib/libkvm/tests/Makefile Wed Jul 8 18:32:25 2020 (r363019) +++ head/lib/libkvm/tests/Makefile Wed Jul 8 18:58:44 2020 (r363020) @@ -6,8 +6,10 @@ ATF_TESTS_C+= kvm_close_test ATF_TESTS_C+= kvm_geterr_test ATF_TESTS_C+= kvm_open_test ATF_TESTS_C+= kvm_open2_test +ATF_TESTS_C+= kvm_read_test CFLAGS.kvm_geterr_test+= -I${.CURDIR:H} +CFLAGS.kvm_read_test+= -I${.CURDIR:H} LIBADD+= kvm @@ -15,7 +17,7 @@ WARNS?= 6 BINDIR= ${TESTSDIR} -.for t in kvm_geterr_test kvm_open_test kvm_open2_test +.for t in kvm_geterr_test kvm_open_test kvm_open2_test kvm_read_test SRCS.$t= $t.c kvm_test_common.c .endfor Added: head/lib/libkvm/tests/kvm_read_test.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/libkvm/tests/kvm_read_test.c Wed Jul 8 18:58:44 2020 (r363020) @@ -0,0 +1,98 @@ +/*- + * Copyright (c) 2020 Alfredo Dal'Ava Junior <alfr...@freebsd.org> + * Copyright (c) 2017 Enji Cooper <n...@freebsd.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * From: FreeBSD: src/lib/libkvm/tests/kvm_geterr_test.c + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/sysctl.h> +#include <errno.h> +#include <fcntl.h> +#include <kvm.h> +#include <limits.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> + +#include <atf-c.h> + +#include "kvm_test_common.h" + +ATF_TC(kvm_read_positive_test_no_error); +ATF_TC_HEAD(kvm_read_positive_test_no_error, tc) +{ + + atf_tc_set_md_var(tc, "descr", + "test that kvm_read returns a sane value"); + atf_tc_set_md_var(tc, "require.user", "root"); +} + +ATF_TC_BODY(kvm_read_positive_test_no_error, tc) +{ + kvm_t *kd; + struct nlist nl[] = { +#define SYMNAME "_mp_maxcpus" +#define X_MAXCPUS 0 + { SYMNAME, 0, 0, 0, 0 }, + { NULL, 0, 0, 0, 0 }, + }; + ssize_t rc; + int sysctl_maxcpus, mp_maxcpus, retcode; + size_t len = sizeof(sysctl_maxcpus); + + errbuf_clear(); + kd = kvm_open(NULL, NULL, NULL, O_RDONLY, errbuf); + ATF_CHECK(!errbuf_has_error(errbuf)); + ATF_REQUIRE_MSG(kd != NULL, "kvm_open failed: %s", errbuf); + retcode = kvm_nlist(kd, nl); + ATF_REQUIRE_MSG(retcode != -1, + "kvm_nlist failed (returned %d): %s", retcode, kvm_geterr(kd)); + if (nl[X_MAXCPUS].n_type == 0) + atf_tc_skip("symbol (\"%s\") couldn't be found", SYMNAME); + + rc = kvm_read(kd, nl[X_MAXCPUS].n_value, &mp_maxcpus, + sizeof(mp_maxcpus)); + + ATF_REQUIRE_MSG(rc != -1, "kvm_read failed: %s", kvm_geterr(kd)); + ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s", + strerror(errno)); + + /* Check if value read from kvm_read is sane */ + retcode = sysctlbyname("kern.smp.maxcpus", &sysctl_maxcpus, &len, NULL, 0); + ATF_REQUIRE_MSG(retcode == 0, "sysctl read failed : %d", retcode); + ATF_REQUIRE_EQ_MSG(mp_maxcpus, sysctl_maxcpus, + "failed: kvm_read of mp_maxcpus returned %d but sysctl maxcpus returned %d", + mp_maxcpus, sysctl_maxcpus); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, kvm_read_positive_test_no_error); + return (atf_no_error()); +} _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
