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 void
  29 __init_misc (int argc, char **argv, char **envp)
  30 {
  31   if (argv && argv[0])
  32     {
  33       char *p = strrchr (argv[0], '/');
  34       if (p == NULL)
  35         __progname = argv[0];
  36       else
  37         __progname = p + 1;
  38       __progname_full = argv[0];
  39     }
  40 }