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
50static void (*efunc)(int, const char *, ...) = err;
51
52static void __dead
53eexit(int e, const char *fmt NETCOMPAT_UNUSED, ...)
54{
55 exit(e);
56}
57
58void (*
59esetfunc(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
66size_t
67estrlcpy(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
79size_t
80estrlcat(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
92char *
93estrdup(const char *s)
94{
95 char *d = strdup(s);
96 if (d == NULL)
97 (*efunc)(1, "Cannot copy string");
98 return d;
99}
100
101char *
102estrndup(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
110void *
111emalloc(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
119void *
120ecalloc(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
128void *
129erealloc(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
137void
138ereallocarr(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
147FILE *
148efopen(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
156int
157easprintf(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
168int
169evasprintf(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
177intmax_t
178estrtoi(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
191uintmax_t
192estrtou(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}
