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lib/libkvm: start adding basic tests for kvm(3)

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- kvm_close: add a testcase to verify support for errno = EINVAL / -1
  (see D10065) when kd == NULL is provided to the libcall.
- kvm_geterr:
-- Add a negative testcase for kd == NULL returning "" (see D10022).
-- Add two positive testcases:
--- test the error case using kvm_write on a O_RDONLY descriptor.
--- test the "no error" case using kvm_read(3) and kvm_nlist(3) as
    helper routines and by injecting a bogus error message via
    _kvm_err (an internal API) _kvm_err was used as there isn't a
    formalized way to clear the error output, and because
    kvm_nlist always returns ENOENT with the NULL terminator today.
- kvm_open, kvm_open2:
-- Add some basic negative tests for kvm_open(3) and kvm_open2(3).
   Testing positive cases with a specific
   `corefile`/`execfile`/`resolver` requires more work and would require
   user intervention today in order to reliably test this out.

Reviewed by:	markj
MFC after:	2 months
Sponsored by:	Dell EMC Isilon
Differential Revision:	D10024
This commit is contained in:
Enji Cooper 2017-03-28 17:37:49 +00:00
parent a7f7e457db
commit 10f81a9b3b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=316099
9 changed files with 533 additions and 0 deletions
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2
etc/mtree/BSD.tests.dist
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@ -328,6 +328,8 @@
..
libdevdctl
..
libkvm
..
libmp
..
libnv

4
lib/libkvm/Makefile
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@ -36,4 +36,8 @@ MLINKS+=kvm_nlist.3 kvm_nlist2.3
MLINKS+=kvm_open.3 kvm_close.3 kvm_open.3 kvm_open2.3 kvm_open.3 kvm_openfiles.3
MLINKS+=kvm_read.3 kvm_read2.3 kvm_read.3 kvm_write.3
.include <src.opts.mk>
SUBDIR.${MK_TESTS}= tests
.include <bsd.lib.mk>

22
lib/libkvm/tests/Makefile Normal file
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@ -0,0 +1,22 @@
# $FreeBSD$
.include <bsd.own.mk>
ATF_TESTS_C+= kvm_close_test
ATF_TESTS_C+= kvm_geterr_test
ATF_TESTS_C+= kvm_open_test
ATF_TESTS_C+= kvm_open2_test
CFLAGS.kvm_geterr_test+= -I${.CURDIR:H}
LIBADD+= kvm
WARNS?= 6
BINDIR= ${TESTSDIR}
.for t in kvm_geterr_test kvm_open_test kvm_open2_test
SRCS.$t= $t.c kvm_test_common.c
.endfor
.include <bsd.test.mk>

57
lib/libkvm/tests/kvm_close_test.c Normal file
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@ -0,0 +1,57 @@
/*-
* Copyright (c) 2017 Ngie Cooper <ngie@freebsd.org>
* All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <errno.h>
#include <fcntl.h>
#include <kvm.h>
#include <signal.h>
#include <atf-c.h>
ATF_TC(kvm_close_negative_test_NULL);
ATF_TC_HEAD(kvm_close_negative_test_NULL, tc)
{
atf_tc_set_md_var(tc, "descr",
"test that kvm_close(NULL) succeeds without error");
}
ATF_TC_BODY(kvm_close_negative_test_NULL, tc)
{
ATF_REQUIRE_ERRNO(EINVAL, kvm_close(NULL) == -1);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, kvm_close_negative_test_NULL);
return (atf_no_error());
}

137
lib/libkvm/tests/kvm_geterr_test.c Normal file
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@ -0,0 +1,137 @@
/*-
* Copyright (c) 2017 Ngie Cooper <ngie@freebsd.org>
* All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.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_private.h"
#include "kvm_test_common.h"
ATF_TC(kvm_geterr_negative_test_NULL);
ATF_TC_HEAD(kvm_geterr_negative_test_NULL, tc)
{
atf_tc_set_md_var(tc, "descr",
"test that kvm_geterr(NULL) returns NULL");
}
ATF_TC_BODY(kvm_geterr_negative_test_NULL, tc)
{
ATF_REQUIRE(!errbuf_has_error(kvm_geterr(NULL)));
}
ATF_TC(kvm_geterr_positive_test_error);
ATF_TC_HEAD(kvm_geterr_positive_test_error, tc)
{
atf_tc_set_md_var(tc, "descr",
"test that kvm_geterr(kd) when kd doesn't contain an error returns \"\"");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(kvm_geterr_positive_test_error, tc)
{
kvm_t *kd;
char *error_msg;
errbuf_clear();
kd = kvm_open2(NULL, NULL, O_RDONLY, errbuf, NULL);
ATF_CHECK(!errbuf_has_error(errbuf));
ATF_REQUIRE_MSG(kd != NULL, "kvm_open2 failed: %s", errbuf);
ATF_REQUIRE_MSG(kvm_write(kd, 0, NULL, 0) == -1,
"kvm_write succeeded unexpectedly on an O_RDONLY file descriptor");
error_msg = kvm_geterr(kd);
ATF_CHECK(errbuf_has_error(error_msg));
ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
strerror(errno));
}
ATF_TC(kvm_geterr_positive_test_no_error);
ATF_TC_HEAD(kvm_geterr_positive_test_no_error, tc)
{
atf_tc_set_md_var(tc, "descr",
"test that kvm_geterr(kd) when kd contains an error returns an error message");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(kvm_geterr_positive_test_no_error, tc)
{
#define ALL_IS_WELL "that ends well"
kvm_t *kd;
char *error_msg;
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 mp_maxcpus, retcode;
errbuf_clear();
kd = kvm_open2(NULL, NULL, O_RDONLY, errbuf, NULL);
ATF_CHECK(!errbuf_has_error(errbuf));
ATF_REQUIRE_MSG(kd != NULL, "kvm_open2 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);
_kvm_err(kd, NULL, "%s", ALL_IS_WELL); /* XXX: internal API */
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));
error_msg = kvm_geterr(kd);
ATF_REQUIRE_MSG(strcmp(error_msg, ALL_IS_WELL) == 0,
"error message changed: %s", error_msg);
ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
strerror(errno));
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, kvm_geterr_negative_test_NULL);
ATF_TP_ADD_TC(tp, kvm_geterr_positive_test_error);
ATF_TP_ADD_TC(tp, kvm_geterr_positive_test_no_error);
return (atf_no_error());
}

117
lib/libkvm/tests/kvm_open2_test.c Normal file
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@ -0,0 +1,117 @@
/*-
* Copyright (c) 2017 Ngie Cooper <ngie@freebsd.org>
* All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <errno.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <paths.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atf-c.h>
#include "kvm_test_common.h"
ATF_TC_WITHOUT_HEAD(kvm_open2_negative_test_nonexistent_corefile);
ATF_TC_BODY(kvm_open2_negative_test_nonexistent_corefile, tc)
{
errbuf_clear();
ATF_CHECK(kvm_open2(NULL, "/nonexistent", O_RDONLY, NULL, NULL) == NULL);
ATF_CHECK(!errbuf_has_error(errbuf));
errbuf_clear();
ATF_CHECK(kvm_open2(NULL, "/nonexistent", O_RDONLY,
errbuf, NULL) == NULL);
ATF_CHECK(errbuf_has_error(errbuf));
}
ATF_TC_WITHOUT_HEAD(kvm_open2_negative_test_nonexistent_execfile);
ATF_TC_BODY(kvm_open2_negative_test_nonexistent_execfile, tc)
{
errbuf_clear();
ATF_CHECK(kvm_open2("/nonexistent", _PATH_DEVZERO, O_RDONLY,
NULL, NULL) == NULL);
ATF_CHECK(strlen(errbuf) == 0);
errbuf_clear();
ATF_CHECK(kvm_open2("/nonexistent", _PATH_DEVZERO, O_RDONLY,
errbuf, NULL) == NULL);
ATF_CHECK(errbuf_has_error(errbuf));
}
ATF_TC(kvm_open2_negative_test_invalid_corefile);
ATF_TC_HEAD(kvm_open2_negative_test_invalid_corefile, tc)
{
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(kvm_open2_negative_test_invalid_corefile, tc)
{
kvm_t *kd;
errbuf_clear();
atf_utils_create_file("some-file", "this is a text file");
kd = kvm_open2(NULL, "some-file", O_RDONLY, errbuf, NULL);
ATF_CHECK(errbuf_has_error(errbuf));
ATF_REQUIRE_MSG(kd == NULL, "kvm_open2 succeeded");
}
ATF_TC(kvm_open2_negative_test_invalid_execfile);
ATF_TC_HEAD(kvm_open2_negative_test_invalid_execfile, tc)
{
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(kvm_open2_negative_test_invalid_execfile, tc)
{
kvm_t *kd;
errbuf_clear();
atf_utils_create_file("some-file", "this is a text file");
kd = kvm_open2("some-file", "/bin/sh", O_RDONLY, errbuf, NULL);
ATF_CHECK(errbuf_has_error(errbuf));
ATF_REQUIRE_MSG(kd == NULL, "kvm_open2 succeeded unexpectedly");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, kvm_open2_negative_test_invalid_corefile);
ATF_TP_ADD_TC(tp, kvm_open2_negative_test_invalid_execfile);
ATF_TP_ADD_TC(tp, kvm_open2_negative_test_nonexistent_corefile);
ATF_TP_ADD_TC(tp, kvm_open2_negative_test_nonexistent_execfile);
return (atf_no_error());
}

105
lib/libkvm/tests/kvm_open_test.c Normal file
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@ -0,0 +1,105 @@
/*-
* Copyright (c) 2017 Ngie Cooper <ngie@freebsd.org>
* All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <errno.h>
#include <fcntl.h>
#include <kvm.h>
#include <limits.h>
#include <paths.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atf-c.h>
#include "kvm_test_common.h"
ATF_TC_WITHOUT_HEAD(kvm_open_negative_test_nonexistent_corefile);
ATF_TC_BODY(kvm_open_negative_test_nonexistent_corefile, tc)
{
ATF_CHECK(kvm_open(NULL, "/nonexistent", NULL, O_RDONLY, NULL) == NULL);
ATF_CHECK(kvm_open(NULL, "/nonexistent", NULL, O_RDONLY,
getprogname()) == NULL);
}
ATF_TC_WITHOUT_HEAD(kvm_open_negative_test_nonexistent_execfile);
ATF_TC_BODY(kvm_open_negative_test_nonexistent_execfile, tc)
{
ATF_CHECK(kvm_open("/nonexistent", _PATH_DEVZERO, NULL, O_RDONLY,
NULL) == NULL);
ATF_CHECK(kvm_open("/nonexistent", _PATH_DEVZERO, NULL, O_RDONLY,
getprogname()) == NULL);
}
ATF_TC(kvm_open_negative_test_invalid_corefile);
ATF_TC_HEAD(kvm_open_negative_test_invalid_corefile, tc)
{
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(kvm_open_negative_test_invalid_corefile, tc)
{
kvm_t *kd;
atf_utils_create_file("some-file", "this is a text file");
kd = kvm_open(NULL, "some-file", NULL, O_RDONLY, getprogname());
ATF_REQUIRE_MSG(kd == NULL, "kvm_open didn't return NULL on failure");
}
ATF_TC(kvm_open_negative_test_invalid_execfile);
ATF_TC_HEAD(kvm_open_negative_test_invalid_execfile, tc)
{
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(kvm_open_negative_test_invalid_execfile, tc)
{
kvm_t *kd;
atf_utils_create_file("some-file", "this is a text file");
kd = kvm_open("some-file", "/bin/sh", NULL, O_RDONLY, getprogname());
ATF_REQUIRE_MSG(kd == NULL, "kvm_open succeeded unexpectedly");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, kvm_open_negative_test_invalid_corefile);
ATF_TP_ADD_TC(tp, kvm_open_negative_test_invalid_execfile);
ATF_TP_ADD_TC(tp, kvm_open_negative_test_nonexistent_corefile);
ATF_TP_ADD_TC(tp, kvm_open_negative_test_nonexistent_execfile);
return (atf_no_error());
}

49
lib/libkvm/tests/kvm_test_common.c Normal file
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@ -0,0 +1,49 @@
/*-
* Copyright (c) 2017 Ngie Cooper <ngie@freebsd.org>
* All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <string.h>
#include "kvm_test_common.h"
char errbuf[_POSIX2_LINE_MAX];
void
errbuf_clear(void)
{
strcpy(errbuf, "");
}
bool
errbuf_has_error(const char *_errbuf)
{
return (strcmp(_errbuf, ""));
}

40
lib/libkvm/tests/kvm_test_common.h Normal file
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@ -0,0 +1,40 @@
/*-
* Copyright (c) 2017 Ngie Cooper <ngie@freebsd.org>
* All rights reserved.
*
* 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.
*
* $FreeBSD$
*/
#ifndef __KVM_TEST_COMMON_H__
#include <sys/types.h>
#include <limits.h>
#include <stdbool.h>
extern char errbuf[_POSIX2_LINE_MAX];
void errbuf_clear(void);
bool errbuf_has_error(const char *);
#endif