misc/init-misc.c

   1 /* Define and initialize `__progname' et. al.
   2    Copyright (C) 1994, 1995, 1996, 1997, 1998 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
  22 char *__progname_full = (char *) "";
  23 char *__progname = (char *) "";
  24 weak_alias (__progname_full, program_invocation_name)
  25 weak_alias (__progname, program_invocation_short_name)
  26
  27
  28 #ifdef HAVE_GNU_LD
  29 static
  30 #endif /* HAVE_GNU_LD */
  31 void __init_misc (int argc, char **argv, char **envp)
  32   __attribute__ ((unused));
  33
  34
  35 #ifdef HAVE_GNU_LD
  36 static
  37 #endif /* HAVE_GNU_LD */
  38 void
  39 __init_misc (int argc, char **argv, char **envp)
  40 {
  41   if (argv && argv[0])
  42     {
  43       char *p = strrchr (argv[0], '/');
  44       if (p == NULL)
  45         __progname = argv[0];
  46       else
  47         __progname = p + 1;
  48       __progname_full = argv[0];
  49     }
  50 }
  51
  52 #ifdef HAVE_GNU_LD
  53 text_set_element (__libc_subinit, __init_misc);
  54 #endif