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Add new minherit test.

This commit is contained in:
christos 2014-07-18 12:34:52 +00:00
parent 9aaf8e57e5
commit 0579ed8b30
2 changed files with 202 additions and 1 deletions
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3
tests/lib/libc/sys/Makefile
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@ -1,4 +1,4 @@
# $NetBSD: Makefile,v 1.35 2014/06/10 04:28:39 he Exp $
# $NetBSD: Makefile,v 1.36 2014/07/18 12:34:52 christos Exp $
MKMAN= no
@ -30,6 +30,7 @@ TESTS_C+= t_link
TESTS_C+= t_listen
TESTS_C+= t_lwp_ctl
TESTS_C+= t_lwp_create
TESTS_C+= t_minherit
TESTS_C+= t_mincore
TESTS_C+= t_mkdir
TESTS_C+= t_mkfifo

200
tests/lib/libc/sys/t_minherit.c Normal file
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@ -0,0 +1,200 @@
/* $NetBSD: t_minherit.c,v 1.1 2014/07/18 12:34:52 christos Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
__RCSID("$NetBSD: t_minherit.c,v 1.1 2014/07/18 12:34:52 christos Exp $");
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/sysctl.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <atf-c.h>
static long page;
static void *
makemap(int v, int f) {
void *map = mmap(NULL, page, PROT_READ|PROT_WRITE,
MAP_SHARED|MAP_ANON, -1, 0);
ATF_REQUIRE(map != MAP_FAILED);
memset(map, v, page);
if (f != 666)
ATF_REQUIRE(minherit(map, page, f) == 0);
else
ATF_REQUIRE(minherit(map, page, f) == -1);
return map;
}
ATF_TC(minherit_copy);
ATF_TC_HEAD(minherit_copy, tc)
{
atf_tc_set_md_var(tc, "descr",
"Test for MAP_INHERIT_COPY from minherit(2)");
}
ATF_TC_BODY(minherit_copy, tc)
{
void *map1 = makemap(1, MAP_INHERIT_COPY);
void *map2 = makemap(1, MAP_INHERIT_COPY);
switch (fork()) {
default:
ATF_REQUIRE(wait(NULL) != -1);
ATF_REQUIRE(memcmp(map1, map2, page) == 0);
break;
case -1:
ATF_REQUIRE(0);
break;
case 0:
ATF_REQUIRE(memcmp(map1, map2, page) == 0);
memset(map1, 0, page);
exit(0);
}
}
ATF_TC(minherit_share);
ATF_TC_HEAD(minherit_share, tc)
{
atf_tc_set_md_var(tc, "descr",
"Test for MAP_INHERIT_SHARE from minherit(2)");
}
ATF_TC_BODY(minherit_share, tc)
{
void *map1 = makemap(1, MAP_INHERIT_SHARE);
void *map2 = makemap(1, MAP_INHERIT_SHARE);
switch (fork()) {
default:
ATF_REQUIRE(wait(NULL) != -1);
memset(map2, 0, page);
ATF_REQUIRE(memcmp(map1, map2, page) == 0);
break;
case -1:
ATF_REQUIRE(0);
break;
case 0:
ATF_REQUIRE(memcmp(map1, map2, page) == 0);
memset(map1, 0, page);
exit(0);
}
}
static void
segv(int n) {
_exit(n);
}
ATF_TC(minherit_none);
ATF_TC_HEAD(minherit_none, tc)
{
atf_tc_set_md_var(tc, "descr",
"Test for MAP_INHERIT_NONE from minherit(2)");
}
ATF_TC_BODY(minherit_none, tc)
{
void *map1 = makemap(0, MAP_INHERIT_NONE);
int status;
switch (fork()) {
default:
ATF_REQUIRE(wait(&status) != -1);
ATF_REQUIRE(WEXITSTATUS(status) == SIGSEGV);
break;
case -1:
ATF_REQUIRE(0);
break;
case 0:
ATF_REQUIRE(signal(SIGSEGV, segv) != SIG_ERR);
memset(map1, 0, page);
exit(0);
}
}
ATF_TC(minherit_zero);
ATF_TC_HEAD(minherit_zero, tc)
{
atf_tc_set_md_var(tc, "descr",
"Test for MAP_INHERIT_ZERO from minherit(2)");
}
ATF_TC_BODY(minherit_zero, tc)
{
void *map1 = makemap(1, MAP_INHERIT_ZERO);
void *map2 = makemap(0, MAP_INHERIT_SHARE);
switch (fork()) {
default:
ATF_REQUIRE(wait(NULL) != -1);
memset(map2, 1, page);
ATF_REQUIRE(memcmp(map1, map2, page) == 0);
break;
case -1:
ATF_REQUIRE(0);
break;
case 0:
ATF_REQUIRE(memcmp(map1, map2, page) == 0);
memset(map1, 2, page);
exit(0);
}
}
ATF_TC(minherit_bad);
ATF_TC_HEAD(minherit_bad, tc)
{
atf_tc_set_md_var(tc, "descr",
"Test for bad minherit(2)");
}
ATF_TC_BODY(minherit_bad, tc)
{
(void)makemap(0, 666);
}
ATF_TP_ADD_TCS(tp)
{
page = sysconf(_SC_PAGESIZE);
ATF_REQUIRE(page >= 0);
ATF_TP_ADD_TC(tp, minherit_copy);
ATF_TP_ADD_TC(tp, minherit_share);
ATF_TP_ADD_TC(tp, minherit_none);
ATF_TP_ADD_TC(tp, minherit_zero);
ATF_TP_ADD_TC(tp, minherit_bad);
return atf_no_error();
}