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HOOK_T 9S "May 1, 2008"
NAME
hook_t - callback structure for subscribing to netinfo events
SYNOPSIS

#include <sys/hook.h>
INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

DESCRIPTION

The hook_t data structure defines a callback that is to be inserted into a networking event. This data structure must be allocated with a call to hook_alloc() and released with a call to hook_free().

STRUCTURE MEMBERS
hook_func_t h_func; /* callback function to invoke */
char *h_name; /* unique name given to the hook */
int h_flags;
hook_hint_t h_hint; /* insertion hint type */
uintptr_t h_hintvalue; /* used with h_hint */
void *h_arg; /* value to pass into h_func */

typedef int (*hook_func_t)(net_event_t token, hook_data_t info,
 void *);
"HINT TYPES"

Hook hints are hints that are used at the time of insertion and are not rules that enforce where a hook lives for its entire lifetime on an event. The valid values for the h_hint field are: HH_NONE

Insert the hook wherever convenient.

HH_FIRST

Place the hook first on the list of hooks.

HH_LAST

Place the hook last on the list of hooks.

HH_BEFORE

Place the hook before another hook on the list of hooks. The value in h_hintvalue must be a pointer to the name of another hook.

HH_AFTER

Place the hook after another hook on the list of hooks. The value in h_hintvalue must be a pointer to the name of another hook.

ATTRIBUTES

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

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Committed
SEE ALSO

netinfo(9F)