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 #ifdef HAVE_GNU_LD
  30 static
  31 #endif /* HAVE_GNU_LD */
  32 void __init_misc (int argc, char **argv, char **envp)
  33   __attribute__ ((unused));
  34
  35
  36 #ifdef HAVE_GNU_LD
  37 static
  38 #endif /* HAVE_GNU_LD */
  39 void
  40 __init_misc (int argc, char **argv, char **envp)
  41 {
  42   if (argv && argv[0])
  43     {
  44       char *p = strrchr (argv[0], '/');
  45       if (p == NULL)
  46         __progname = argv[0];
  47       else
  48         __progname = p + 1;
  49       __progname_full = argv[0];
  50     }
  51 }
  52
  53 #ifdef HAVE_GNU_LD
  54 text_set_element (__libc_subinit, __init_misc);
  55 #endif