1 /* $NetBSD: efun.c,v 1.12 2019/10/03 20:29:19 tnn Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #if HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 #endif 35 36 #include <sys/cdefs.h> 37 #ifdef __RCSID 38 __RCSID("$NetBSD: efun.c,v 1.12 2019/10/03 20:29:19 tnn Exp $"); 39 #endif 40 41 #include <err.h> 42 #include <errno.h> 43 #include <inttypes.h> 44 #include <string.h> 45 #include <stdlib.h> 46 #include <stdio.h> 47 #include <stdarg.h> 48 #include <util.h> 49 50 static void (*efunc)(int, const char *, ...) = err; 51 52 static void __dead 53 eexit(int e, const char *fmt __unused, ...) 54 { 55 exit(e); 56 } 57 58 void (* 59 esetfunc(void (*ef)(int, const char *, ...)))(int, const char *, ...) 60 { 61 void (*of)(int, const char *, ...) = efunc; 62 efunc = ef == NULL ? eexit : ef; 63 return of; 64 } 65 66 size_t 67 estrlcpy(char *dst, const char *src, size_t len) 68 { 69 size_t rv; 70 if ((rv = strlcpy(dst, src, len)) >= len) { 71 errno = ENAMETOOLONG; 72 (*efunc)(1, 73 "Cannot copy string; %zu chars needed %zu provided", 74 rv, len); 75 } 76 return rv; 77 } 78 79 size_t 80 estrlcat(char *dst, const char *src, size_t len) 81 { 82 size_t rv; 83 if ((rv = strlcat(dst, src, len)) >= len) { 84 errno = ENAMETOOLONG; 85 (*efunc)(1, 86 "Cannot append to string; %zu chars needed %zu provided", 87 rv, len); 88 } 89 return rv; 90 } 91 92 char * 93 estrdup(const char *s) 94 { 95 char *d = strdup(s); 96 if (d == NULL) 97 (*efunc)(1, "Cannot copy string"); 98 return d; 99 } 100 101 char * 102 estrndup(const char *s, size_t len) 103 { 104 char *d = strndup(s, len); 105 if (d == NULL) 106 (*efunc)(1, "Cannot copy string"); 107 return d; 108 } 109 110 void * 111 emalloc(size_t n) 112 { 113 void *p = malloc(n); 114 if (p == NULL && n != 0) 115 (*efunc)(1, "Cannot allocate %zu bytes", n); 116 return p; 117 } 118 119 void * 120 ecalloc(size_t n, size_t s) 121 { 122 void *p = calloc(n, s); 123 if (p == NULL && n != 0 && s != 0) 124 (*efunc)(1, "Cannot allocate %zu blocks of size %zu", n, s); 125 return p; 126 } 127 128 void * 129 erealloc(void *p, size_t n) 130 { 131 void *q = realloc(p, n); 132 if (q == NULL && n != 0) 133 (*efunc)(1, "Cannot re-allocate %zu bytes", n); 134 return q; 135 } 136 137 void 138 ereallocarr(void *p, size_t n, size_t s) 139 { 140 int rv = reallocarr(p, n, s); 141 if (rv != 0) { 142 errno = rv; 143 (*efunc)(1, "Cannot re-allocate %zu * %zu bytes", n, s); 144 } 145 } 146 147 FILE * 148 efopen(const char *p, const char *m) 149 { 150 FILE *fp = fopen(p, m); 151 if (fp == NULL) 152 (*efunc)(1, "Cannot open `%s'", p); 153 return fp; 154 } 155 156 int 157 easprintf(char ** __restrict ret, const char * __restrict format, ...) 158 { 159 int rv; 160 va_list ap; 161 va_start(ap, format); 162 if ((rv = vasprintf(ret, format, ap)) == -1) 163 (*efunc)(1, "Cannot format string"); 164 va_end(ap); 165 return rv; 166 } 167 168 int 169 evasprintf(char ** __restrict ret, const char * __restrict format, va_list ap) 170 { 171 int rv; 172 if ((rv = vasprintf(ret, format, ap)) == -1) 173 (*efunc)(1, "Cannot format string"); 174 return rv; 175 } 176 177 intmax_t 178 estrtoi(const char * nptr, int base, intmax_t lo, intmax_t hi) 179 { 180 int e; 181 intmax_t rv = strtoi(nptr, NULL, base, lo, hi, &e); 182 if (e != 0) { 183 errno = e; 184 (*efunc)(1, 185 "Cannot convert string value '%s' with base %d to a number in range [%jd .. %jd]", 186 nptr, base, lo, hi); 187 } 188 return rv; 189 } 190 191 uintmax_t 192 estrtou(const char * nptr, int base, uintmax_t lo, uintmax_t hi) 193 { 194 int e; 195 uintmax_t rv = strtou(nptr, NULL, base, lo, hi, &e); 196 if (e != 0) { 197 errno = e; 198 (*efunc)(1, 199 "Cannot convert string value '%s' with base %d to a number in range [%ju .. %ju]", 200 nptr, base, lo, hi); 201 } 202 return rv; 203 } 204
Indexes created Sat Sep 20 22:09:52 GMT 2025