lib/libc/gen/psignal.c

   1 /*      $NetBSD: psignal.c,v 1.22 2010/08/27 08:38:41 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 1.22 2010/08/27 08:38:41 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, (v - iov) + 1);
  79 }
  80
  81 void
  82 psiginfo(const siginfo_t *si, const char *s)
  83 {
  84         psignal(si->si_signo, s);
  85 }