RTEMS 4.7.99.2 On-Line Library

Directory Handler Table Functions

RTEMS Filesystem Design Guide

6.4.3: Directory Handler Table Functions

IMFS_dir_open() for Directories

IMFS_dir_close() for Directories

IMFS_dir_read() for Directories

No write() for Directories

No ioctl() for Directories

IMFS_dir_lseek() for Directories

IMFS_dir_fstat() for Directories

IMFS_fchmod() for Directories

No ftruncate() for Directories

No fpathconf() for Directories

No fsync() for Directories

IMFS_fdatasync() for Directories

Handler table functions are defined in a rtems_filesystem_file_handlers_r structure. It defines functions that are specific to a node type in a given filesystem. One table exists for each of the filesystem's node types. The structure definition appears below. It is followed by general developmental information on each of the functions associated with directories contained in this function management structure.

rtems_filesystem_file_handlers_r IMFS_directory_handlers = {
  IMFS_dir_open,
  IMFS_dir_close,
  IMFS_dir_read,
  NULL,             /* write */
  NULL,             /* ioctl */
  IMFS_dir_lseek,
  IMFS_dir_fstat,
  IMFS_fchmod,
  NULL,             /* ftruncate */
  NULL,             /* fpathconf */
  NULL,             /* fsync */
  IMFS_fdatasync,
  IMFS_fcntl
};

RTEMS Filesystem Design Guide