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#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);
}