hook_establish man page on OpenBSD

Man page or keyword search:  
man Server   11362 pages
apropos Keyword Search (all sections)
Output format
OpenBSD logo
[printable version]

HOOK_ESTABLISH(9)	     OpenBSD Kernel Manual	     HOOK_ESTABLISH(9)

NAME
     hook_establish, hook_disestablish - add or remove a hook from a specified
     list

SYNOPSIS
     #include <sys/types.h>
     #include <sys/systm.h>

     void *
     hook_establish(struct hook_desc_head *head, int tail, void (*fn)(void
     *), void *arg);

     void
     hook_disestablish(struct hook_desc_head *head, void *cookie);

DESCRIPTION
     The hook_establish() function adds fn to the list of hooks invoked by
     dohooks(9).  If tail is non-zero, the hook is added to the tail of the
     list denoted by the TAILQ_HEAD pointer head, otherwise to the front.  The
     dohooks(9) function will at its invocation call each hook from the front
     of this list.  When invoked, the hook function fn will be passed arg as
     its only argument.

     The hook_disestablish() function removes the hook described by the opaque
     pointer cookie from the list of hooks denoted by the TAILQ_HEAD pointer
     head.  If cookie is invalid, the result of hook_disestablish() is
     undefined.

     The startup-, mountroot, and shutdownhooks systems use this API for their
     implementation.

RETURN VALUES
     If successful, hook_establish() returns an opaque pointer describing the
     newly established hook.  Otherwise, it returns NULL.

SEE ALSO
     dohooks(9), doshutdownhooks(9), dostartuphooks(9),
     mountroothook_establish(9), shutdownhook_establish(9),
     startuphook_establish(9)

OpenBSD 4.9			 May 31, 2007			   OpenBSD 4.9
[top]

List of man pages available for OpenBSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net