NAME
puffs_node
- puffs node routines
LIBRARY
SYNOPSIS
struct puffs_node *
puffs_pn_new(struct puffs_usermount *pu, void *priv)
void *
puffs_nodewalk_fn(
struct puffs_usermount *pu struct puffs_node *pn void *arg
)
void *
puffs_pn_nodewalk(
struct puffs_usermount *pu puffs_nodewalk_fn nwfn void *arg
)
void
puffs_pn_remove(struct puffs_node *pn)
void
puffs_pn_put(struct puffs_node *pn)
DESCRIPTION
- puffs_pn_new(
pu, priv) -
Create a new node and attach it to the mountpoint
pu.
The argument
priv
can be used for associating file system specific data with the new
node and will not be accessed by puffs.
- puffs_nodewalk_fn(
pu, pn, arg) -
A callback for
puffs_nodewalk(
).
The list of nodes is iterated in the argument
pn
and the argument
arg
is the argument given to
puffs_nodewalk().
- puffs_nodewalk(
pu, nwfn, arg) -
Walk all nodes associted with the mountpoint
pu
and call
nwfn(
)
for them.
The walk is aborted if
puffs_nodewalk_fn()
returns a value which is not
NULL.
This value is also returned this function.
In case the whole set of nodes is traversed,
NULL
is returned.
This function is useful for example in handling the
puffs_fs_sync()
callback, when cached data for every node should be flushed to stable
storage.
- puffs_pn_remove(
pn) -
Signal that a node has been removed from the file system, but do not
yet release resources associated with the node.
This will prevent the nodewalk functions from accessing the node.
If necessary, this is usually called from
puffs_node_remove(
)
and
puffs_node_rmdir().
- puffs_pn_put(
pn) -
Free all resources associated with node
pn.
This is typically called from
puffs_node_reclaim(
).
SEE ALSO
puffs(3)