C++ (Cpp) fs_close_file Examples

Example #1

File: fs.c Project: nroychowdhury/lk

ssize_t fs_load_file(const char *path, void *ptr, size_t maxlen)
{
    filehandle *handle;

    /* open the file */
    status_t err = fs_open_file(path, &handle);
    if (err < 0)
        return err;

    /* stat it for size, see how much we need to read */
    struct file_stat stat;
    fs_stat_file(handle, &stat);

    ssize_t read_bytes = fs_read_file(handle, ptr, 0, MIN(maxlen, stat.size));

    fs_close_file(handle);

    return read_bytes;
}

Example #2

File: sfs_file.c Project: monaka/B-Free

/*
 * ディレクトリを削除する。
 *
 */
W sfs_i_rmdir (struct inode *parent, char *fname,
	       struct access_info *acc)
{
  int	nentry;
  int	i;
  int	inodeindex;
  struct inode *ip;
  W	rsize, errno;
  
  errno = fs_lookup (parent, fname, O_RDWR, 0, acc, &ip);
  if (errno) {
    printk("[PM] sfs_i_rmdir: can't remove directory %s(%d)\n", fname, errno);
    return (errno);
  }
  if ((ip->i_mode & SFS_FMT_DIR) == 0) {
    fs_close_file(ip);
    return (EP_NOTDIR);
  }
  if (ip->i_refcount >= 2) {
    fs_close_file(ip);
    return (EP_BUSY);
  }
  nentry = sfs_read_dir (ip, 0, NULL);
  if (nentry >= 3) {
    fs_close_file(ip);
    return (EP_NOTEMPTY);
  }

  nentry = sfs_read_dir (parent, 0, NULL);
  if (nentry <= 0) {
    fs_close_file(ip);
    return (EP_NOENT);
  }
  {
    struct sfs_dir buf[nentry]; /* GCC の拡張機能を使っている */
    if (sfs_read_dir (parent, nentry, buf) != 0) {
      fs_close_file(ip);
      return (EP_IO);
    }

    for (i = 0; i < nentry; i++) {
      /* 表示文字長を SFS_MAXNAMELEN にするため．後に pad があるので大丈夫 */
      if (strncmp (fname, buf[i].sfs_d_name, SFS_MAXNAMELEN+1) == 0) {
	inodeindex = buf[i].sfs_d_index;
	break;
      }
    }
    if (i >= nentry) {
      fs_close_file(ip);
      return (EP_NOENT);
    }

    while (i < nentry) {
      buf[i].sfs_d_index = buf[i + 1].sfs_d_index;
      /* 表示文字長を SFS_MAXNAMELEN にするため．後に pad があるので大丈夫 */
      strncpy (buf[i].sfs_d_name, buf[i + 1].sfs_d_name, SFS_MAXNAMELEN+1);
      i++;
    }
    i = parent->i_size - sizeof (struct sfs_dir);
    sfs_i_write(parent, 0, (B *)buf, i, &rsize);
    sfs_i_truncate (parent, i);

    ip->i_link--;
    ip->i_dirty = 1;
    if (ip->i_link <= 1) {
      sfs_i_truncate (ip, 0);
      sfs_free_inode(ip->i_fs, inodeindex);
    }
    parent->i_link -= 1;
    parent->i_dirty = 1;
  }
  fs_close_file(ip);
  return (EP_OK);
}