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/*
* Copyright (c) 1988, 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.
* 4. 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "namespace.h"
#if defined(NLS)
#include <nl_types.h>
#endif
#include <limits.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include "reentrant.h"
#include "un-namespace.h"
#define UPREFIX "Unknown signal"
static char sig_ebuf[NL_TEXTMAX];
static char sig_ebuf_err[NL_TEXTMAX];
static once_t sig_init_once = ONCE_INITIALIZER;
static thread_key_t sig_key;
static int sig_keycreated = 0;
static void
sig_keycreate(void)
{
sig_keycreated = (thr_keycreate(&sig_key, free) == 0);
}
static char *
sig_tlsalloc(void)
{
char *ebuf = NULL;
if (thr_main() != 0)
ebuf = sig_ebuf;
else {
if (thr_once(&sig_init_once, sig_keycreate) != 0 ||
!sig_keycreated)
goto thr_err;
if ((ebuf = thr_getspecific(sig_key)) == NULL) {
if ((ebuf = malloc(sizeof(sig_ebuf))) == NULL)
goto thr_err;
if (thr_setspecific(sig_key, ebuf) != 0) {
free(ebuf);
ebuf = NULL;
goto thr_err;
}
}
}
thr_err:
if (ebuf == NULL)
ebuf = sig_ebuf_err;
return (ebuf);
}
/* XXX: negative 'num' ? (REGR) */
char *
strsignal(int num)
{
char *ebuf;
char tmp[20];
size_t n;
int signum;
char *t, *p;
#if defined(NLS)
int saved_errno = errno;
nl_catd catd;
catd = catopen("libc", NL_CAT_LOCALE);
#endif
ebuf = sig_tlsalloc();
if (num > 0 && num < sys_nsig) {
n = strlcpy(ebuf,
#if defined(NLS)
catgets(catd, 2, num, sys_siglist[num]),
#else
sys_siglist[num],
#endif
sizeof(sig_ebuf));
} else {
n = strlcpy(ebuf,
#if defined(NLS)
catgets(catd, 2, 0xffff, UPREFIX),
#else
UPREFIX,
#endif
sizeof(sig_ebuf));
}
signum = num;
if (num < 0)
signum = -signum;
t = tmp;
do {
*t++ = "0123456789"[signum % 10];
} while (signum /= 10);
if (num < 0)
*t++ = '-';
p = (ebuf + n);
*p++ = ':';
*p++ = ' ';
for (;;) {
*p++ = *--t;
if (t <= tmp)
break;
}
*p = '\0';
#if defined(NLS)
catclose(catd);
errno = saved_errno;
#endif
return (ebuf);
}
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