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/* $OpenBSD: strnlentest.c,v 1.1 2010/06/02 12:20:47 millert Exp $ */
/*
* Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int main(int argc, char *argv[])
{
char *buf;
int failures = 0;
size_t len, bufsize;
/* Enable malloc security options. */
setenv("MALLOC_OPTIONS", "S", 0);
bufsize = getpagesize(); /* trigger guard pages easily */
buf = malloc(bufsize);
if (buf == NULL) {
fprintf(stderr, "unable to allocate memory\n");
return 1;
}
memset(buf, 'a', bufsize);
len = strnlen(buf, bufsize);
if (len != bufsize) {
fprintf(stderr, "strnlen: failed unterminated buffer test (1)");
failures++;
}
len = strnlen(buf, bufsize / 2);
if (len != bufsize / 2) {
fprintf(stderr, "strnlen: failed unterminated buffer test (2)");
failures++;
}
buf[bufsize - 1] = '\0';
len = strnlen(buf, bufsize);
if (len != bufsize - 1) {
fprintf(stderr, "strnlen: failed NUL-terminated buffer test (1)");
failures++;
}
len = strnlen(buf, (size_t)-1);
if (len != bufsize - 1) {
fprintf(stderr, "strnlen: failed NUL-terminated buffer test (2)");
failures++;
}
return failures;
}
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