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      1 /*	$NetBSD: __strsignal.c,v 1.28 2024/11/02 16:10:31 kre Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 #if 0
     35 static char *sccsid = "@(#)strerror.c	5.6 (Berkeley) 5/4/91";
     36 #else
     37 __RCSID("$NetBSD: __strsignal.c,v 1.28 2024/11/02 16:10:31 kre Exp $");
     38 #endif
     39 #endif /* LIBC_SCCS and not lint */
     40 
     41 #include "namespace.h"
     42 #ifdef NLS
     43 #include <limits.h>
     44 #include <nl_types.h>
     45 #endif
     46 
     47 #include <assert.h>
     48 #include <stdio.h>
     49 #include <string.h>
     50 #include "extern.h"
     51 #include <signal.h>
     52 
     53 /* ARGSUSED */
     54 const char *
     55 __strsignal(int num, char *buf, size_t buflen)
     56 {
     57 #define	UPREFIX	"Unknown signal: %u"
     58 #define RPREFIX "Real time signal %u"
     59 	unsigned int signum;
     60 
     61 #ifdef NLS
     62 	nl_catd catd ;
     63 	catd = catopen("libc", NL_CAT_LOCALE);
     64 #endif
     65 
     66 	_DIAGASSERT(buf != NULL);
     67 
     68 	signum = num;				/* convert to unsigned */
     69 	if (signum < (unsigned int) sys_nsig) {
     70 #ifdef NLS
     71 		(void)strlcpy(buf, catgets(catd, 2, (int)signum,
     72 		    sys_siglist[signum]), buflen);
     73 #else
     74 		return sys_siglist[signum];
     75 #endif
     76 	} else if (signum >= SIGRTMIN && signum <= SIGRTMAX) {
     77 #ifdef NLS
     78 		(void)snprintf(buf, buflen,
     79 	            catgets(catd, 2, SIGRTMIN, RPREFIX), signum);
     80 #else
     81 		(void)snprintf(buf, buflen, RPREFIX, signum);
     82 #endif
     83 	} else {
     84 #ifdef NLS
     85 		(void)snprintf(buf, buflen,
     86 	            catgets(catd, 1, 0xffff, UPREFIX), signum);
     87 #else
     88 		(void)snprintf(buf, buflen, UPREFIX, signum);
     89 #endif
     90 	}
     91 
     92 #ifdef NLS
     93 	catclose(catd);
     94 #endif
     95 
     96 	return buf;
     97 }
     98