free_rtn(9S) Data Structures for Drivers 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.
SEE ALSO
esballoc(9F), freeb(9F), datab(9S)
STREAMS Programming Guide
SunOS 5.10 13 Nov 1996 free_rtn(9S)
