fs/tmpfs/tmpfs.h

84 	 * Pointer to the node this entry refers to.  In case this field
85 	 * is NULL, the node is a whiteout.
109  * the node itself in the former case or the pointer to the parent directory
140  * Internal representation of a tmpfs file system node.
145  * attributes that are actually allowed by the node's type.
162 	 * when the node is removed from list and unlocked.
168 	 * The node's type.  Any of 'VBLK', 'VCHR', 'VDIR', 'VFIFO',
180 	 * operations to do modifications to the node in a delayed
189 	 * The node size.  It does not necessarily match the real amount
194 	/* Generic node attributes. */
213 	 * point to the node it references.  At the same time, the node's
215 	 * it.  Further attempts to allocate a vnode for this same node will
219 	 * May be NULL when the node is unused (that is, no vnode has been
231 	 * Identify if current node has vnode assiocate with
236 	/* Transient refcounter on this node. */
239 	/* misc data field for different tn_type node */
249 			 * this property identifies the root node.
307 #define TMPFS_NODE_LOCK(node) mtx_lock(&(node)->tn_interlock)
308 #define TMPFS_NODE_UNLOCK(node) mtx_unlock(&(node)->tn_interlock)
309 #define TMPFS_NODE_MTX(node) (&(node)->tn_interlock)
310 #define	TMPFS_NODE_ASSERT_LOCKED(node) mtx_assert(TMPFS_NODE_MTX(node), \
314 #define TMPFS_ASSERT_LOCKED(node) do {					\
315 		MPASS((node) != NULL);					\
316 		MPASS((node)->tn_vnode != NULL);			\
317 		ASSERT_VOP_LOCKED((node)->tn_vnode, "tmpfs assert");	\
320 #define TMPFS_ASSERT_LOCKED(node) (void)0
350 	 * Pointer to the node representing the root directory of this
383 	/* All node lock to protect the node list and tmp_pages_used. */
400  * This structure maps a file identifier to a tmpfs node.  Used by the
420 void	tmpfs_ref_node(struct tmpfs_node *node);
421 void	tmpfs_ref_node_locked(struct tmpfs_node *node);
442 struct tmpfs_dirent *	tmpfs_dir_lookup(struct tmpfs_node *node,
460 void	tmpfs_set_status(struct tmpfs_mount *tm, struct tmpfs_node *node,
484  * Ensures that the node pointed by 'node' is a directory and that its
487 #define TMPFS_VALIDATE_DIR(node) do { \
488 	MPASS((node)->tn_type == VDIR); \
489 	MPASS((node)->tn_size % sizeof(struct tmpfs_dirent) == 0); \
520 	struct tmpfs_node *node;
523 	node = (struct tmpfs_node *)vp->v_data;
524 	return (node);
530 	struct tmpfs_node *node;
532 	node = VP_TO_TMPFS_NODE(vp);
533 	TMPFS_VALIDATE_DIR(node);
534 	return (node);