cba2a593da
This avoids reading past the end of the static strings. On a system with bounds checking these tests fault. Reviewed by: asomers Obtained from: CheriBSD MFC after: 1 week Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D21004
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/*-
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* Copyright (c) 2009 David Schultz <das@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/mman.h>
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include <atf-c.h>
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static void *
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makebuf(size_t len, int guard_at_end)
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{
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char *buf;
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size_t alloc_size = roundup2(len, PAGE_SIZE) + PAGE_SIZE;
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buf = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
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ATF_CHECK(buf);
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if (guard_at_end) {
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ATF_CHECK(munmap(buf + alloc_size - PAGE_SIZE, PAGE_SIZE) == 0);
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return (buf + alloc_size - PAGE_SIZE - len);
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} else {
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ATF_CHECK(munmap(buf, PAGE_SIZE) == 0);
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return (buf + PAGE_SIZE);
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}
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}
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static void
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test_wcsnlen(const wchar_t *s)
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{
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wchar_t *s1;
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size_t size, len, bufsize;
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int i;
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size = wcslen(s) + 1;
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for (i = 0; i <= 1; i++) {
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for (bufsize = 0; bufsize <= size + 10; bufsize++) {
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s1 = makebuf(bufsize * sizeof(wchar_t), i);
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wmemcpy(s1, s, bufsize <= size ? bufsize : size);
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len = (size > bufsize) ? bufsize : size - 1;
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ATF_CHECK(wcsnlen(s1, bufsize) == len);
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}
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}
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}
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ATF_TC_WITHOUT_HEAD(nul);
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ATF_TC_BODY(nul, tc)
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{
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test_wcsnlen(L"");
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}
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ATF_TC_WITHOUT_HEAD(foo);
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ATF_TC_BODY(foo, tc)
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{
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test_wcsnlen(L"foo");
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}
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ATF_TC_WITHOUT_HEAD(glorp);
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ATF_TC_BODY(glorp, tc)
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{
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test_wcsnlen(L"glorp");
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, nul);
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ATF_TP_ADD_TC(tp, foo);
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ATF_TP_ADD_TC(tp, glorp);
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return (atf_no_error());
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}
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