usr/src/lib/libc/port/gen/psignal.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1988 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 /*
  41  * Print the name of the signal indicated by "sig", along with the
  42  * supplied message
  43  */
  44
  45 #pragma weak _psignal = psignal
  46
  47 #include "lint.h"
  48 #include "_libc_gettext.h"
  49 #include <sys/types.h>
  50 #include <stdio.h>
  51 #include <unistd.h>
  52 #include <string.h>
  53 #include <signal.h>
  54 #include <siginfo.h>
  55
  56 #define strsignal(i)    (_libc_gettext(_sys_siglistp[i]))
  57
  58 void
  59 psignal(int sig, const char *s)
  60 {
  61         char *c;
  62         size_t n = 0;
  63         char buf[256];
  64
  65         if (sig < 0 || sig >= NSIG)
  66                 sig = 0;
  67         c = strsignal(sig);
  68         if (s != NULL)
  69                 n = strlen(s);
  70         if (n != 0) {
  71                 (void) snprintf(buf, sizeof (buf), "%s: %s\n", s, c);
  72         } else {
  73                 (void) snprintf(buf, sizeof (buf), "%s\n", c);
  74         }
  75         (void) write(2, buf, strlen(buf));
  76 }