1  /* Define and initialize `__progname' et. al.
       2     Copyright (C) 1994-2023 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 Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the 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     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <string.h>
      20  #include <libc-internal.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  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  }