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      1 /*	$NetBSD: psignal.c,v 1.23 2012/03/13 21:13:36 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  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[] = "@(#)psignal.c	8.1 (Berkeley) 6/4/93";
     36 #else
     37 __RCSID("$NetBSD: psignal.c,v 1.23 2012/03/13 21:13:36 christos Exp $");
     38 #endif
     39 #endif /* LIBC_SCCS and not lint */
     40 
     41 #include "namespace.h"
     42 
     43 #include <sys/types.h>
     44 #include <sys/uio.h>
     45 
     46 #include <limits.h>
     47 #include <signal.h>
     48 #include <string.h>
     49 #include <unistd.h>
     50 
     51 #include "extern.h"
     52 
     53 #ifdef __weak_alias
     54 __weak_alias(psignal,_psignal)
     55 #endif
     56 
     57 void
     58 psignal(int sig, const char *s)
     59 {
     60 	struct iovec *v;
     61 	struct iovec iov[4];
     62 	char buf[NL_TEXTMAX];
     63 
     64 	v = iov;
     65 	if (s && *s) {
     66 		v->iov_base = __UNCONST(s);
     67 		v->iov_len = strlen(s);
     68 		v++;
     69 		v->iov_base = __UNCONST(": ");
     70 		v->iov_len = 2;
     71 		v++;
     72 	}
     73 	v->iov_base = __UNCONST(__strsignal((int)sig, buf, sizeof(buf)));
     74 	v->iov_len = strlen(v->iov_base);
     75 	v++;
     76 	v->iov_base = __UNCONST("\n");
     77 	v->iov_len = 1;
     78 	(void)writev(STDERR_FILENO, iov, (int)((v - iov) + 1));
     79 }
     80 
     81 void
     82 psiginfo(const siginfo_t *si, const char *s)
     83 {
     84 	psignal(si->si_signo, s);
     85 }
     86