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/*-
* Copyright (c) 2009 David Schultz <das@FreeBSD.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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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>
__FBSDID("$FreeBSD$");
#include <sys/mman.h>
#include <sys/param.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static char *
makebuf(size_t len, int guard_at_end)
{
char *buf;
size_t alloc_size = roundup2(len, PAGE_SIZE) + PAGE_SIZE;
buf = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
assert(buf);
if (guard_at_end) {
assert(munmap(buf + alloc_size - PAGE_SIZE, PAGE_SIZE) == 0);
return (buf + alloc_size - PAGE_SIZE - len);
} else {
assert(munmap(buf, PAGE_SIZE) == 0);
return (buf + PAGE_SIZE);
}
}
static void
test_stpncpy(const char *s)
{
char *src, *dst;
size_t size, len, bufsize, x;
int i, j;
size = strlen(s) + 1;
for (i = 0; i <= 1; i++) {
for (j = 0; j <= 1; j++) {
for (bufsize = 0; bufsize <= size + 10; bufsize++) {
src = makebuf(size, i);
memcpy(src, s, size);
dst = makebuf(bufsize, j);
memset(dst, 'X', bufsize);
len = (bufsize < size) ? bufsize : size - 1;
assert(stpncpy(dst, src, bufsize) == dst+len);
assert(memcmp(src, dst, len) == 0);
for (x = len; x < bufsize; x++)
assert(dst[x] == '\0');
}
}
}
}
int
main(int argc, char *argv[])
{
printf("1..3\n");
test_stpncpy("");
printf("ok 1 - stpncpy\n");
test_stpncpy("foo");
printf("ok 2 - stpncpy\n");
test_stpncpy("glorp");
printf("ok 3 - stpncpy\n");
exit(0);
}
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