void IMFS_fsunmount( rtems_filesystem_mount_table_entry_t *temp_mt_entry ) { IMFS_jnode_t *jnode; IMFS_jnode_t *next; rtems_filesystem_location_info_t loc; int result = 0; /* * Traverse tree that starts at the mt_fs_root and deallocate memory * associated memory space */ loc = temp_mt_entry->mt_fs_root->location; jnode = (IMFS_jnode_t *)loc.node_access; /* * Set this to null to indicate that it is being unmounted. */ temp_mt_entry->mt_fs_root->location.node_access = NULL; do { next = jnode->Parent; loc.node_access = (void *)jnode; IMFS_Set_handlers( &loc ); if ( !IMFS_is_directory( jnode ) || jnode_has_no_children( jnode ) ) { result = IMFS_rmnod( NULL, &loc ); if ( result != 0 ) rtems_fatal_error_occurred( 0xdeadbeef ); IMFS_node_destroy( jnode ); jnode = next; } if ( jnode != NULL ) { if ( IMFS_is_directory( jnode ) ) { if ( jnode_has_children( jnode ) ) jnode = jnode_get_first_child( jnode ); } } } while (jnode != NULL); }
static bool IMFS_eval_is_directory( rtems_filesystem_eval_path_context_t *ctx, void *arg ) { rtems_filesystem_location_info_t *currentloc = rtems_filesystem_eval_path_get_currentloc( ctx ); IMFS_jnode_t *node = currentloc->node_access; return IMFS_is_directory( node ); }
int IMFS_unmount( rtems_filesystem_mount_table_entry_t *mt_entry ) { int rv = 0; IMFS_jnode_t *node = mt_entry->mt_point_node->location.node_access; if ( IMFS_is_directory( node ) ) { if ( node->info.directory.mt_fs == mt_entry ) { node->info.directory.mt_fs = NULL; } else { errno = EINVAL; rv = -1; } } else { errno = ENOTDIR; rv = -1; } return rv; }