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mirror of https://gitlab.isc.org/isc-projects/bind9 synced 2025-08-24 11:08:45 +00:00
bind/lib/isc/string.c
Ondřej Surý 58bd26b6cf Update the copyright information in all files in the repository
This commit converts the license handling to adhere to the REUSE
specification.  It specifically:

1. Adds used licnses to LICENSES/ directory

2. Add "isc" template for adding the copyright boilerplate

3. Changes all source files to include copyright and SPDX license
   header, this includes all the C sources, documentation, zone files,
   configuration files.  There are notes in the doc/dev/copyrights file
   on how to add correct headers to the new files.

4. Handle the rest that can't be modified via .reuse/dep5 file.  The
   binary (or otherwise unmodifiable) files could have license places
   next to them in <foo>.license file, but this would lead to cluttered
   repository and most of the files handled in the .reuse/dep5 file are
   system test files.
2022-01-11 09:05:02 +01:00

116 lines
3.3 KiB
C

/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*! \file */
#ifdef _GNU_SOURCE
#undef _GNU_SOURCE
#endif /* ifdef _GNU_SOURCE */
#include <string.h>
#include <isc/string.h> /* IWYU pragma: keep */
#if !defined(HAVE_STRLCPY)
size_t
strlcpy(char *dst, const char *src, size_t size) {
char *d = dst;
const char *s = src;
size_t n = size;
/* Copy as many bytes as will fit */
if (n != 0U && --n != 0U) {
do {
if ((*d++ = *s++) == 0) {
break;
}
} while (--n != 0U);
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0U) {
if (size != 0U) {
*d = '\0'; /* NUL-terminate dst */
}
while (*s++) {
}
}
return (s - src - 1); /* count does not include NUL */
}
#endif /* !defined(HAVE_STRLCPY) */
#if !defined(HAVE_STRLCAT)
size_t
strlcat(char *dst, const char *src, size_t size) {
char *d = dst;
const char *s = src;
size_t n = size;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0U && *d != '\0') {
d++;
}
dlen = d - dst;
n = size - dlen;
if (n == 0U) {
return (dlen + strlen(s));
}
while (*s != '\0') {
if (n != 1U) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return (dlen + (s - src)); /* count does not include NUL */
}
#endif /* !defined(HAVE_STRLCAT) */
int
isc_string_strerror_r(int errnum, char *buf, size_t buflen) {
return (strerror_r(errnum, buf, buflen));
}