diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libc/sys/t_minherit.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libc/sys/t_minherit.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libc/sys/t_minherit.c b/contrib/netbsd-tests/lib/libc/sys/t_minherit.c new file mode 100644 index 0000000..0bdf6bc --- /dev/null +++ b/contrib/netbsd-tests/lib/libc/sys/t_minherit.c @@ -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(); +} |
