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/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <fs/types.h>
#include <fs/errno.h>
#include <fs/task.h>
#include <fs/maccess.h>
#include <fs/dirent.h>

#include "file.h"
#include "inode.h"
#include "fileop.h"
#include "fs.h"

#include "debug.h"

int k_readdir(int fd, struct dirent *den)
{
  __pid_t pid;
  int     ret;

  call_to_fs();
 
  printk5("k_readdir: START");
 
  /* don't try to use a bad file descriptor */
  pid=__get_pid();
  if (check_fd(pid,fd)) {
    printk(KERN_INFO "k_readdir: using bad file descriptor");
    return_from_fs(-EBADF);
  }

  /* don't try to read a regular file */
  if (!file_ptr(pid,fd)->f_flag_isdir) return_from_fs(-EBADF);

  /* don't try to read into not user memory */
  if (!__verify_write(den,sizeof(struct dirent))) return_from_fs(-EVERIFY);

  printk5("k_readdir: parameters check pass... calling specific readdir");

  ret=file_ptr(pid,fd)->f_op->readdir(file_ptr(pid,fd),den);

  printk5("k_readdir: END");

  return_from_fs(ret);
}