The kstat_lookup() function traverses the kstat chain, kc->kc_chain, searching for a kstat with the same ks_module, ks_instance, and ks_name fields; this triplet uniquely identifies a kstat. If ks_module is NULL, ks_instance is -1, or ks_name is NULL, then those fields will be ignored in the search. For example, kstat_lookup(kc, NULL, -1, "foo") will simply find the first kstat with name "foo".

The kstat_data_lookup() function searches the kstat's data section for the record with the specified name. This operation is valid only for kstat types which have named data records. Currently, only the KSTAT_TYPE_NAMED and KSTAT_TYPE_TIMER kstats have named data records.

The kstat_lookup() function returns a pointer to the requested kstat if it is found, or NULL if it is not.

The kstat_data_lookup() function returns a pointer to the requested data record if it is found. If the requested record is not found, or if the kstat type is invalid, kstat_data_lookup() returns NULL.

/dev/kstat

kernel statistics driver

See attributes(5) for descriptions of the following attributes:

kstat(3KSTAT), kstat_chain_update(3KSTAT), kstat_close(3KSTAT), kstat_open(3KSTAT), kstat_read(3KSTAT), kstat_write(3KSTAT), attributes(5)