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uihashinit.9freebsd
Langue: en
Version: 307399 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
BSD mandoc
NAME
uidinfo uihashinit uifind uihold uifree - functions for managing UID informationSYNOPSIS
In sys/param.h In sys/proc.h In sys/resourcevar.h Ft void Fn uihashinit void Ft struct uidinfo * Fn uifind uid_t uid Ft void Fn uihold struct uidinfo *uip Ft void Fn uifree struct uidinfo *uipDESCRIPTION
The family of functions is used to manage Vt uidinfo structures. Each Vt uidinfo structure maintains per uid resource consumption counts, including the process count and socket buffer space usage.The Fn uihashinit function initializes the Vt uidinfo hash table and its mutex. This function should only be called during system initialization.
The Fn uifind function looks up and returns the Vt uidinfo structure for Fa uid . If no Vt uidinfo structure exists for Fa uid , a new structure will be allocated and initialized. The hash mutex is acquired and released.
The Fn uihold function increases the reference count on Fa uip . Fa uip Ns 's lock is acquired and released.
The Fn uifree function decreases the reference count on Fa uip , and if the count reaches 0 Fa uip is freed. Fa uip Ns 's lock is acquired and release and the uidinfo hash mutex may be acquired and released.
RETURN VALUES
Fn uifind returns a pointer to an initialized Vt uidinfo structure, and should not fail.AUTHORS
This manual page was written by An Chad David Aq davidc@acns.ab.ca .Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre