io/pwd.c

   1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <mcheck.h>
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22
  23 int
  24 main (void)
  25 {
  26   char *dir;
  27
  28   /* Let this program be used for debugging.  */
  29   mtrace ();
  30
  31   dir = getcwd ((char *) NULL, 0);
  32
  33   if (dir == NULL)
  34     perror ("getcwd");
  35   else
  36     {
  37       puts (dir);
  38       free (dir);
  39     }
  40
  41   return (dir == NULL ? EXIT_FAILURE : EXIT_SUCCESS);
  42 }