1 /* $NetBSD: t_swab.c,v 1.1 2010/12/26 13:35:54 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code was contributed to The NetBSD Foundation by Christos Zoulas. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #include <atf-c.h> 31 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 37 #include <err.h> 38 39 #define MAXCHK 100 40 41 static void 42 build(char *a, char *b, size_t n) { 43 size_t i; 44 45 n >>= 1; 46 for (i = 0; i < n; i += 2) { 47 b[i+1] = a[i] = (char)i; 48 b[i] = a[i+1] = (char)(i+1); 49 } 50 for (n <<= 1; n < MAXCHK; n++) 51 a[n] = b[n] = (char)~0; 52 } 53 54 static void 55 dump(const char *f, char *b, size_t l) 56 { 57 58 printf("%s ", f); 59 while (l--) 60 printf("%.2x ", (unsigned char)*b++); 61 printf("\n"); 62 } 63 64 ATF_TC(check_swab); 65 66 ATF_TC_HEAD(check_swab, tc) 67 { 68 69 atf_tc_set_md_var(tc, "descr", "Test swab results"); 70 } 71 72 ATF_TC_BODY(check_swab, tc) 73 { 74 char a[MAXCHK], b[MAXCHK], r[MAXCHK]; 75 size_t i; 76 77 for (i = 0; i < MAXCHK; i += 2) { 78 build(a, b, i); 79 (void)memset(r, ~0, MAXCHK); 80 swab(a, r, i); 81 if (memcmp(b, r, MAXCHK) != 0) { 82 fprintf(stderr, "pattern mismatch at %lu bytes", 83 (unsigned long)i); 84 dump("expect:", b, MAXCHK); 85 dump("result:", r, MAXCHK); 86 atf_tc_fail("Check stderr for details"); 87 } 88 } 89 } 90 91 ATF_TP_ADD_TCS(tp) 92 { 93 ATF_TP_ADD_TC(tp, check_swab); 94 95 return atf_no_error(); 96 } 97