xref: /illumos-gate/usr/src/man/man9s/free_rtn.9s (revision 87c723434df4be9c0f7ef119567cb6e2da776a36)
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Copyright 1989 AT&T
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FREE_RTN 9S "Nov 13, 1996"
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