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getrusage.test: check that getrusage parser does not access extra memory

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Place struct rusage at the end of an allocated memory page followed by
an inaccessible page.

* tests/getrusage.c (main): Use tail_alloc.
This commit is contained in:
Дмитрий Левин 2016-02-19 02:08:13 +00:00
parent 5204dbdbb1
commit 274fd468e1
1 changed files with 37 additions and 9 deletions
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46
tests/getrusage.c
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@ -1,3 +1,31 @@
/*
* Copyright (c) 2016 Fei Jie <feij.fnst@cn.fujitsu.com>
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "tests.h"
#include <sys/syscall.h>
@ -10,21 +38,21 @@
int
main(void)
{
struct rusage usage;
int rc = syscall(__NR_getrusage, RUSAGE_SELF, &usage);
struct rusage *const usage = tail_alloc(sizeof(struct rusage));
int rc = syscall(__NR_getrusage, RUSAGE_SELF, usage);
printf("getrusage(RUSAGE_SELF, {ru_utime={%lu, %lu}"
", ru_stime={%lu, %lu}, ru_maxrss=%lu, ru_ixrss=%lu"
", ru_idrss=%lu, ru_isrss=%lu, ru_minflt=%lu"
", ru_majflt=%lu, ru_nswap=%lu, ru_inblock=%lu"
", ru_oublock=%lu, ru_msgsnd=%lu, ru_msgrcv=%lu"
", ru_nsignals=%lu, ru_nvcsw=%lu, ru_nivcsw=%lu}) = %d\n",
usage.ru_utime.tv_sec, usage.ru_utime.tv_usec,
usage.ru_stime.tv_sec, usage.ru_stime.tv_usec,
usage.ru_maxrss, usage.ru_ixrss, usage.ru_idrss,
usage.ru_isrss, usage.ru_minflt, usage.ru_majflt,
usage.ru_nswap, usage.ru_inblock, usage.ru_oublock,
usage.ru_msgsnd, usage.ru_msgrcv, usage.ru_nsignals,
usage.ru_nvcsw, usage.ru_nivcsw, rc);
usage->ru_utime.tv_sec, usage->ru_utime.tv_usec,
usage->ru_stime.tv_sec, usage->ru_stime.tv_usec,
usage->ru_maxrss, usage->ru_ixrss, usage->ru_idrss,
usage->ru_isrss, usage->ru_minflt, usage->ru_majflt,
usage->ru_nswap, usage->ru_inblock, usage->ru_oublock,
usage->ru_msgsnd, usage->ru_msgrcv, usage->ru_nsignals,
usage->ru_nvcsw, usage->ru_nivcsw, rc);
puts("+++ exited with 0 +++");
return 0;