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add truncate causing signal test

This commit is contained in:
christos 2015-02-27 16:09:19 +00:00
parent 302cbb59af
commit 19331afb8e
1 changed files with 57 additions and 2 deletions
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59
tests/lib/libc/sys/t_mmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: t_mmap.c,v 1.7 2012/06/14 17:47:58 bouyer Exp $ */
/* $NetBSD: t_mmap.c,v 1.8 2015/02/27 16:09:19 christos Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
@ -55,7 +55,7 @@
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_mmap.c,v 1.7 2012/06/14 17:47:58 bouyer Exp $");
__RCSID("$NetBSD: t_mmap.c,v 1.8 2015/02/27 16:09:19 christos Exp $");
#include <sys/param.h>
#include <sys/mman.h>
@ -451,6 +451,60 @@ ATF_TC_CLEANUP(mmap_truncate, tc)
(void)unlink(path);
}
ATF_TC_WITH_CLEANUP(mmap_truncate_signal);
ATF_TC_HEAD(mmap_truncate_signal, tc)
{
atf_tc_set_md_var(tc, "descr",
"Test mmap(2) ftruncate(2) causing signal");
}
ATF_TC_BODY(mmap_truncate_signal, tc)
{
char *map;
long i;
int fd, sta;
pid_t pid;
fd = open(path, O_RDWR | O_CREAT, 0700);
if (fd < 0)
return;
ATF_REQUIRE(write(fd, "foo\n", 5) == 5);
map = mmap(NULL, page, PROT_READ, MAP_FILE|MAP_PRIVATE, fd, 0);
ATF_REQUIRE(map != MAP_FAILED);
sta = 0;
for (i = 0; i < 5; i++)
sta += map[i];
ATF_REQUIRE(sta == 334);
ATF_REQUIRE(ftruncate(fd, 0) == 0);
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
ATF_REQUIRE(signal(SIGBUS, map_sighandler) != SIG_ERR);
sta = 0;
for (i = 0; i < page; i++)
sta += map[i];
ATF_REQUIRE(i == 0);
}
(void)wait(&sta);
ATF_REQUIRE(WIFEXITED(sta) != 0);
ATF_REQUIRE(WEXITSTATUS(sta) == SIGBUS);
ATF_REQUIRE(munmap(map, page) == 0);
ATF_REQUIRE(close(fd) == 0);
}
ATF_TC_CLEANUP(mmap_truncate_signal, tc)
{
(void)unlink(path);
}
ATF_TC(mmap_va0);
ATF_TC_HEAD(mmap_va0, tc)
{
@ -499,6 +553,7 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, mmap_prot_2);
ATF_TP_ADD_TC(tp, mmap_prot_3);
ATF_TP_ADD_TC(tp, mmap_truncate);
ATF_TP_ADD_TC(tp, mmap_truncate_signal);
ATF_TP_ADD_TC(tp, mmap_va0);
return atf_no_error();