1 files changed, 74 insertions, 0 deletions
diff --git a/cpukit/libfs/src/imfs/imfs_link.c b/cpukit/libfs/src/imfs/imfs_link.c
index 61b9f43e96..9e25f044c4 100644
--- a/cpukit/libfs/src/imfs/imfs_link.c
+++ b/cpukit/libfs/src/imfs/imfs_link.c
@@ -62,3 +62,77 @@ int IMFS_link(
 
   return 0;
 }
+
+static int IMFS_stat_hard_link(
+  const rtems_filesystem_location_info_t *loc,
+  struct stat *buf
+)
+{
+  const IMFS_link_t *hard_link = loc->node_access;
+  rtems_filesystem_location_info_t targetloc = *loc;
+
+  targetloc.node_access = hard_link->link_node;
+  IMFS_Set_handlers( &targetloc );
+
+  return (targetloc.handlers->fstat_h)( &targetloc, buf );
+}
+
+static const rtems_filesystem_file_handlers_r IMFS_link_handlers = {
+  .open_h = rtems_filesystem_default_open,
+  .close_h = rtems_filesystem_default_close,
+  .read_h = rtems_filesystem_default_read,
+  .write_h = rtems_filesystem_default_write,
+  .ioctl_h = rtems_filesystem_default_ioctl,
+  .lseek_h = rtems_filesystem_default_lseek,
+  .fstat_h = IMFS_stat_hard_link,
+  .ftruncate_h = rtems_filesystem_default_ftruncate,
+  .fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
+  .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
+  .fcntl_h = rtems_filesystem_default_fcntl,
+  .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .poll_h = rtems_filesystem_default_poll,
+  .readv_h = rtems_filesystem_default_readv,
+  .writev_h = rtems_filesystem_default_writev
+};
+
+static IMFS_jnode_t *IMFS_node_initialize_hard_link(
+  IMFS_jnode_t *node,
+  void *arg
+)
+{
+  IMFS_link_t *hard_link = (IMFS_link_t *) node;
+
+  hard_link->link_node = arg;
+
+  return node;
+}
+
+static IMFS_jnode_t *IMFS_node_remove_hard_link(
+  IMFS_jnode_t *node
+)
+{
+  IMFS_link_t *hard_link = (IMFS_link_t *) node;
+  IMFS_jnode_t *target = hard_link->link_node;
+
+  _Assert( target != NULL );
+
+  if ( target->st_nlink == 1) {
+    target = (*target->control->node_remove)( target );
+    if ( target == NULL ) {
+      node = NULL;
+    }
+  } else {
+    --target->st_nlink;
+    IMFS_update_ctime( target );
+  }
+
+  return node;
+}
+
+const IMFS_node_control IMFS_node_control_hard_link = {
+  .handlers = &IMFS_link_handlers,
+  .node_size = sizeof(IMFS_link_t),
+  .node_initialize = IMFS_node_initialize_hard_link,
+  .node_remove = IMFS_node_remove_hard_link,
+  .node_destroy = IMFS_node_destroy_default
+};