libc/string/psignal.c

   1 /*
   2  * Copyright (C) 2002     Manuel Novoa III
   3  * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
   4  *
   5  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   6  */
   7
   8 #include <features.h>
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <signal.h>
  12
  13
  14 /* TODO: make this threadsafe with a reentrant version of strsignal? */
  15
  16 void psignal(int signum, register const char *message)
  17 {
  18         /* If the program is calling psignal, it's a safe bet that printf and
  19          * friends are used as well.  It is also possible that the calling
  20          * program could buffer stderr, or reassign it. */
  21
  22         register const char *sep;
  23
  24         sep = ": ";
  25         if (!(message && *message)) { /* Caller did not supply a prefix message */
  26                 message = (sep += 2);   /* or passed an empty string. */
  27         }
  28
  29         fprintf(stderr, "%s%s%s\n", message, sep, strsignal(signum));
  30 }