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 #include <sys/param.h> 29 #include <sys/mman.h> 30 #include <assert.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <string.h> 34 35 #include <atf-c.h> 36 37 static char * 38 makebuf(size_t len, int guard_at_end) 39 { 40 char *buf; 41 size_t alloc_size, page_size; 42 43 page_size = getpagesize(); 44 alloc_size = roundup2(len, page_size) + page_size; 45 46 buf = mmap(NULL, alloc_size, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0); 47 assert(buf); 48 if (guard_at_end) { 49 assert(munmap(buf + alloc_size - page_size, page_size) == 0); 50 return (buf + alloc_size - page_size - len); 51 } else { 52 assert(munmap(buf, page_size) == 0); 53 return (buf + page_size); 54 } 55 } 56 57 static void 58 test_stpncpy(const char *s) 59 { 60 char *src, *dst; 61 size_t size, len, bufsize, x; 62 int i, j; 63 64 size = strlen(s) + 1; 65 for (i = 0; i <= 1; i++) { 66 for (j = 0; j <= 1; j++) { 67 for (bufsize = 0; bufsize <= size + 10; bufsize++) { 68 src = makebuf(size, i); 69 memcpy(src, s, size); 70 dst = makebuf(bufsize, j); 71 memset(dst, 'X', bufsize); 72 len = (bufsize < size) ? bufsize : size - 1; 73 assert(stpncpy(dst, src, bufsize) == dst+len); 74 assert(memcmp(src, dst, len) == 0); 75 for (x = len; x < bufsize; x++) 76 assert(dst[x] == '\0'); 77 } 78 } 79 } 80 } 81 82 ATF_TC_WITHOUT_HEAD(nul); 83 ATF_TC_BODY(nul, tc) 84 { 85 86 test_stpncpy(""); 87 } 88 89 ATF_TC_WITHOUT_HEAD(foo); 90 ATF_TC_BODY(foo, tc) 91 { 92 93 test_stpncpy("foo"); 94 } 95 96 ATF_TC_WITHOUT_HEAD(glorp); 97 ATF_TC_BODY(glorp, tc) 98 { 99 100 test_stpncpy("glorp"); 101 } 102 103 ATF_TP_ADD_TCS(tp) 104 { 105 106 ATF_TP_ADD_TC(tp, nul); 107 ATF_TP_ADD_TC(tp, foo); 108 ATF_TP_ADD_TC(tp, glorp); 109 110 return (atf_no_error()); 111 } 112