glibc/misc/init-misc.c

/* Define and initialize `__progname'.
Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

#include <string.h>
#include <errno.h>

char *__progname_full = (char *) "";
char *__progname = (char *) "";
weak_alias (__progname_full, program_invocation_name)
weak_alias (__progname, program_invocation_short_name)

void
__init_misc (int argc, char **argv, char **envp)
{
  if (argv && argv[0])
    {
      char *p = strrchr (argv[0], '/');
      if (p == NULL)
	__progname = argv[0];
      else
	__progname = p + 1;
      __progname_full = argv[0];
    }
}