3fb3b97c4d
NetBSD, OpenBSD, and Android's Bionic number the clauses 1 through 3, so follow suit to make comparison easier.
153 lines
3.7 KiB
C
153 lines
3.7 KiB
C
/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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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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#if defined(NLS)
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#include <nl_types.h>
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#endif
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#include <limits.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include "reentrant.h"
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#include "un-namespace.h"
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#define UPREFIX "Unknown signal"
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static char sig_ebuf[NL_TEXTMAX];
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static char sig_ebuf_err[NL_TEXTMAX];
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static once_t sig_init_once = ONCE_INITIALIZER;
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static thread_key_t sig_key;
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static int sig_keycreated = 0;
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static void
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sig_keycreate(void)
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{
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sig_keycreated = (thr_keycreate(&sig_key, free) == 0);
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}
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static char *
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sig_tlsalloc(void)
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{
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char *ebuf = NULL;
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if (thr_main() != 0)
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ebuf = sig_ebuf;
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else {
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if (thr_once(&sig_init_once, sig_keycreate) != 0 ||
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!sig_keycreated)
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goto thr_err;
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if ((ebuf = thr_getspecific(sig_key)) == NULL) {
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if ((ebuf = malloc(sizeof(sig_ebuf))) == NULL)
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goto thr_err;
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if (thr_setspecific(sig_key, ebuf) != 0) {
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free(ebuf);
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ebuf = NULL;
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goto thr_err;
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}
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}
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}
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thr_err:
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if (ebuf == NULL)
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ebuf = sig_ebuf_err;
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return (ebuf);
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}
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/* XXX: negative 'num' ? (REGR) */
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char *
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strsignal(int num)
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{
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char *ebuf;
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char tmp[20];
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size_t n;
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int signum;
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char *t, *p;
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#if defined(NLS)
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int saved_errno = errno;
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nl_catd catd;
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catd = catopen("libc", NL_CAT_LOCALE);
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#endif
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ebuf = sig_tlsalloc();
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if (num > 0 && num < sys_nsig) {
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n = strlcpy(ebuf,
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#if defined(NLS)
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catgets(catd, 2, num, sys_siglist[num]),
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#else
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sys_siglist[num],
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#endif
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sizeof(sig_ebuf));
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} else {
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n = strlcpy(ebuf,
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#if defined(NLS)
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catgets(catd, 2, 0xffff, UPREFIX),
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#else
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UPREFIX,
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#endif
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sizeof(sig_ebuf));
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signum = num;
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if (num < 0)
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signum = -signum;
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t = tmp;
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do {
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*t++ = "0123456789"[signum % 10];
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} while (signum /= 10);
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if (num < 0)
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*t++ = '-';
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p = (ebuf + n);
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*p++ = ':';
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*p++ = ' ';
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for (;;) {
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*p++ = *--t;
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if (t <= tmp)
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break;
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}
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*p = '\0';
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}
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#if defined(NLS)
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catclose(catd);
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errno = saved_errno;
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#endif
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return (ebuf);
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}
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