1/*- 2 * Copyright (c) 2009 David Schultz <das@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <sys/mman.h> 31#include <sys/param.h> 32#include <assert.h> 33#include <stdio.h> 34#include <stdlib.h> 35#include <string.h> 36 37static char * 38makebuf(size_t len, int guard_at_end) 39{ 40 char *buf; 41 size_t alloc_size = roundup2(len, PAGE_SIZE) + PAGE_SIZE; 42 43 buf = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0); 44 assert(buf); 45 if (guard_at_end) { 46 assert(munmap(buf + alloc_size - PAGE_SIZE, PAGE_SIZE) == 0); 47 return (buf + alloc_size - PAGE_SIZE - len); 48 } else { 49 assert(munmap(buf, PAGE_SIZE) == 0); 50 return (buf + PAGE_SIZE); 51 } 52} 53 54static void 55test_stpncpy(const char *s) 56{ 57 char *src, *dst; 58 size_t size, len, bufsize, x; 59 int i, j; 60 61 size = strlen(s) + 1; 62 for (i = 0; i <= 1; i++) { 63 for (j = 0; j <= 1; j++) { 64 for (bufsize = 0; bufsize <= size + 10; bufsize++) { 65 src = makebuf(size, i); 66 memcpy(src, s, size); 67 dst = makebuf(bufsize, j); 68 memset(dst, 'X', bufsize); 69 len = (bufsize < size) ? bufsize : size - 1; 70 assert(stpncpy(dst, src, bufsize) == dst+len); 71 assert(memcmp(src, dst, len) == 0); 72 for (x = len; x < bufsize; x++) 73 assert(dst[x] == '\0'); 74 } 75 } 76 } 77} 78 79int 80main(int argc, char *argv[]) 81{ 82 83 printf("1..3\n"); 84 85 test_stpncpy(""); 86 printf("ok 1 - stpncpy\n"); 87 test_stpncpy("foo"); 88 printf("ok 2 - stpncpy\n"); 89 test_stpncpy("glorp"); 90 printf("ok 3 - stpncpy\n"); 91 92 exit(0); 93} 94