com32/modules/pwd.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2010 Gene Cumm - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8  *   Boston MA 02111-1307, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 /*
  14  * Display present (current) working directory
  15  */
  16
  17 #include <errno.h>
  18 #include <stdio.h>
  19 #include <console.h>
  20 #include <unistd.h>
  21 #include <dirent.h>
  22
  23 /* Size of path buffer string */
  24 #ifndef PATH_MAX
  25 #  ifdef NAME_MAX
  26 #    define PATH_MAX   NAME_MAX
  27 #  elif FILENAME_MAX
  28 #    define PATH_MAX   FILENAME_MAX
  29 #  else
  30 #    define PATH_MAX   256
  31 #  endif       /* NAME_MAX */
  32 #endif /* PATH_MAX */
  33
  34 int main(void)
  35 {
  36     int rv = 0;
  37     char pwd[PATH_MAX], *pwdptr;
  38
  39     pwdptr = getcwd(pwd, PATH_MAX);
  40     if (pwdptr) {
  41        if (pwd[0] != 0)
  42            puts(pwd);
  43        else
  44            puts(".");
  45     } else {
  46        rv = errno;
  47        puts("ERROR: getcwd() returned NULL");
  48     }
  49     return rv;
  50 }