8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "namespace.h"
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#include <netdb.h>
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#if defined(NLS)
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#include <nl_types.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include "reentrant.h"
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#endif
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#include "un-namespace.h"
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/* Entries EAI_ADDRFAMILY (1) and EAI_NODATA (7) are obsoleted, but left */
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/* for backward compatibility with userland code prior to 2553bis-02 */
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static const char *ai_errlist[] = {
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"Success", /* 0 */
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"Address family for hostname not supported", /* 1 */
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"Temporary failure in name resolution", /* EAI_AGAIN */
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"Invalid value for ai_flags", /* EAI_BADFLAGS */
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"Non-recoverable failure in name resolution", /* EAI_FAIL */
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"ai_family not supported", /* EAI_FAMILY */
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"Memory allocation failure", /* EAI_MEMORY */
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"No address associated with hostname", /* 7 */
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"hostname nor servname provided, or not known", /* EAI_NONAME */
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"servname not supported for ai_socktype", /* EAI_SERVICE */
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"ai_socktype not supported", /* EAI_SOCKTYPE */
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"System error returned in errno", /* EAI_SYSTEM */
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"Invalid value for hints", /* EAI_BADHINTS */
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"Resolved protocol is unknown", /* EAI_PROTOCOL */
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"Argument buffer overflow" /* EAI_OVERFLOW */
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};
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#if defined(NLS)
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static char gai_buf[NL_TEXTMAX];
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static once_t gai_init_once = ONCE_INITIALIZER;
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static thread_key_t gai_key;
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static int gai_keycreated = 0;
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static void
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gai_keycreate(void)
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{
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gai_keycreated = (thr_keycreate(&gai_key, free) == 0);
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}
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#endif
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const char *
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gai_strerror(int ecode)
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{
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#if defined(NLS)
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nl_catd catd;
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char *buf;
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if (thr_main() != 0)
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buf = gai_buf;
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else {
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if (thr_once(&gai_init_once, gai_keycreate) != 0 ||
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!gai_keycreated)
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goto thr_err;
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if ((buf = thr_getspecific(gai_key)) == NULL) {
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if ((buf = malloc(sizeof(gai_buf))) == NULL)
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goto thr_err;
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if (thr_setspecific(gai_key, buf) != 0) {
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free(buf);
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goto thr_err;
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}
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}
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}
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catd = catopen("libc", NL_CAT_LOCALE);
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if (ecode > 0 && ecode < EAI_MAX)
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strlcpy(buf, catgets(catd, 3, ecode, ai_errlist[ecode]),
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sizeof(gai_buf));
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else if (ecode == 0)
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strlcpy(buf, catgets(catd, 3, NL_MSGMAX - 1, "Success"),
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sizeof(gai_buf));
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else
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strlcpy(buf, catgets(catd, 3, NL_MSGMAX, "Unknown error"),
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sizeof(gai_buf));
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catclose(catd);
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return buf;
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thr_err:
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#endif
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if (ecode >= 0 && ecode < EAI_MAX)
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return ai_errlist[ecode];
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return "Unknown error";
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}
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