misc/init-misc.c

   1 /* Define and initialize `__progname'.
   2 Copyright (C) 1994, 1995, 1996 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
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, 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