net_hook_register(9f) [opensolaris man page]

net_hook_register(9F)					   Kernel Functions for Drivers 				     net_hook_register(9F)

NAME

       net_hook_register - add a hook to be called in event processing

SYNOPSIS

       #include <sys/neti.h>

       net_hook_t net_hook_register(const net_data_t net, hook_t *hook);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       net     value returned from a successful call to net_protocol_register().

       hook    pointer to a hook_t structure.

DESCRIPTION

       The net_hook_register() function uses hooks that allow callbacks to be registered with events that belong to a network protocol. A success-
       ful call to net_hook_register() requires that a valid handle for a network protocol be provided (the net  parameter),  along  with  a  hook
       description that includes a reference to an available event.

       While it is possible to use the same hook_t structure with multiple calls to net_hook_register(), it is not encouraged.

       The hook_t structure passed in with this function is described by hook_t(9S). The following describes how this structure is used.

       h_func		      Must be non-NULL and represent a function that fits the specified interface.

       h_name		      Gives  the  hook	a name that represents its owner. No duplication of h_name among the hooks present for an event is
			      allowed.

       h_flags		      Currently unused and must be set to 0.

       h_hint, h_hintvalue    Specify a hint to net_hook_register() on how to insert this hook. If the hint cannot be specified, then an error	is
			      returned.

       h_arg;		      May take any value that the consumer wishes to have passed back when the hook is activated.

RETURN VALUES

       If the net_hook_register() function succeeds, 0 is returned. Otherwise, one of the following errors is returned:

       ENOMEM	 The system cannot allocate any more memory to support registering this hook.

       ENXIO	 A hook cannot be found among the given family of events.

       EEXIST	 A hook with the given h_name already exists on that event.

       ESRCH	 A before or after dependency cannot be satisfied due to the hook with

       EBUSY	 The  h_hint  field specifies a hint that cannot currently be satisfied because it conflicts with another hook. An example of this
		 might be specifying HH_FIRST or HH_LAST when another hook has already been registered with this value.

CONTEXT

       The net_hook_register() function may be called from user  or kernel context.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       net_hook_unregister(9F), hook_t(9S)

SunOS 5.11							    1 May 2008						     net_hook_register(9F)

Check Out this Related Man Page

hook(3FORM)															       hook(3FORM)

NAME

       hook - set hooks for automatic invocation by applications

SYNOPSIS

       #include <form.h>
       int set_field_init(FORM *form, Form_Hook func);
       Form_Hook field_init(const FORM *form);
       int set_field_term(FORM *form, Form_Hook func);
       Form_Hook field_term(const FORM *form);
       int set_form_init(FORM *form, Form_Hook func);
       Form_Hook form_init(const FORM *form);
       int set_form_term(FORM *form, Form_Hook func);
       Form_Hook form_term(const FORM *form);

DESCRIPTION

       These  functions  make it possible to set hook functions to be called at various points in the automatic processing of input event codes by
       form_driver.

       The function set_field_init sets a hook to be called at form-post time and each	time  the  selected  field  changes  (after  the  change).
       field_init returns the current field init hook, if any (NULL if there is no such hook).

       The  function  set_field_term  sets  a  hook to be called at form-unpost time and each time the selected field changes (before the change).
       field_term returns the current field term hook, if any (NULL if there is no such hook).

       The function set_form_init sets a hook to be called at form-post time and just after a page change once it is  posted.	form_init  returns
       the current form init hook, if any (NULL if there is no such hook).

       The function set_form_term sets a hook to be called at form-unpost time and just before a page change once it is posted.  form_init returns
       the current form term hook, if any (NULL if there is no such hook).

RETURN VALUE

       Routines that return pointers return NULL on error.  Other routines return one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
	    System error occurred (see errno).

SEE ALSO

       ncurses(3NCURSES), form(3FORM).

NOTES

       The header file <form.h> automatically includes the header file <curses.h>.

PORTABILITY

       These routines emulate the System V forms library.  They were not supported on Version 7 or BSD versions.

AUTHORS

       Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S. Raymond.

																       hook(3FORM)

Linux and UNIX Man Pages

net_hook_register(9f) [opensolaris man page]

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