개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

freeb(9f)

freeb(9F)                      Kernel Functions                      freeb(9F)

NAME
       freeb - free a message block

SYNOPSIS
       #include <sys/stream.h>

       void freeb(mblk_t *bp);

PARAMETERS
       bp    Pointer  to the message block to be deallocated. mblk_t is an in‐
             stance of the msgb(9S) structure.


INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

DESCRIPTION
       The freeb() function deallocates a  message  block.  If  the  reference
       count  of  the db_ref member of the datab(9S) structure is greater than
       1, freeb() decrements the count. If db_ref equals 1, it deallocates the
       message block and the corresponding data block and buffer.


       If the data buffer to be freed was allocated with the esballoc(9F), the
       buffer may be a non-STREAMS resource. In that case, the driver must  be
       notified  that  the attached data buffer needs to be freed, and run its
       own freeing routine. To make this process  independent  of  the  driver
       used in the stream, freeb() finds the free_rtn(9S) structure associated
       with  the buffer. The free_rtn structure contains a pointer to the dri‐
       ver-dependent routine, which releases the buffer. Once this  is  accom‐
       plished,  freeb()  releases  the  STREAMS resources associated with the
       buffer.

CONTEXT
       The freeb() function can be called from user, interrupt, or kernel con‐
       text.

EXAMPLES
       Example 1 Using freeb()



       See copyb(9F) for an example of using freeb().

SEE ALSO
       dupb(9F), allocb(9F), copyb(9F), esballoc(9F), free_rtn(9S)


       Writing Device Drivers in Oracle Solaris 11.4


       STREAMS Programming Guide

Oracle Solaris 11.4               16 Jan 2006                        freeb(9F)