free_rtn(9S)

NAME

free_rtn − structure that specifies a driver’s message freeing routine

SYNOPSIS

#include <sys/stream.h>

INTERFACE LEVEL

Architecture independent level 1 (DDI/DKI).

DESCRIPTION

The free_rtn structure is referenced by the datab structure. When freeb(9F) is called to free the message, the driver’s message freeing routine (referenced through the free_rtn structure) is called, with arguments, to free the data buffer.

STRUCTURE MEMBERS

void(∗free_func)()/∗ user’s freeing routine ∗/ char∗free_arg/∗ arguments to free_func() ∗/

The free_rtn structure is defined as type frtn_t.

Museum