misc/init-misc.c

   1 /* Define and initialize `__progname' et. al.
   2    Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <string.h>
  21 #include <errno.h>
  22
  23 char *__progname_full = (char *) "";
  24 char *__progname = (char *) "";
  25 weak_alias (__progname_full, program_invocation_name)
  26 weak_alias (__progname, program_invocation_short_name)
  27
  28
  29 static void __init_misc (int argc, char **argv, char **envp)
  30   __attribute__ ((unused));
  31
  32
  33 static void
  34 __init_misc (int argc, char **argv, char **envp)
  35 {
  36   if (argv && argv[0])
  37     {
  38       char *p = strrchr (argv[0], '/');
  39       if (p == NULL)
  40         __progname = argv[0];
  41       else
  42         __progname = p + 1;
  43       __progname_full = argv[0];
  44     }
  45 }
  46
  47 #ifdef HAVE_GNU_LD
  48 text_set_element (__libc_subinit, __init_misc);
  49 #endif