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Add a new at_shutdown queue, SHUTDOWN_FINAL. This queue is run at

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splhigh() after any system dumps have completed.  SHUTDOWN_POST_SYNC
isn't quite late enough for disk controllers.
This commit is contained in:
Justin T. Gibbs 1998-09-15 08:48:57 +00:00
parent 478f8a9685
commit a8abf21632
1 changed files with 9 additions and 3 deletions
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12
share/man/man9/at_shutdown.9
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@ -23,7 +23,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" $Id: at_shutdown.9,v 1.10 1997/04/13 14:49:03 bde Exp $
.\" $Id: at_shutdown.9,v 1.11 1998/03/12 07:31:16 charnier Exp $
.\" "
.Dd August 15, 1996
.Os
@ -61,16 +61,22 @@ and
.Fa arg
arguments as the corresponding call to
.Fn at_shutdown .
There are two shutdown queues, one run before the final sync and one after.
There are three shutdown queues, the first is run before the final filesystems
sync, the second is run after the sync, before the system disables all
interrupts, and the last queue is run with interrupts disabled just before
the system is reset or halted
.
The last argument to
.Fa at_shutdown
should be one of
.Dv SHUTDOWN_PRE_SYNC
or
.Dv SHUTDOWN_POST_SYNC
or
.Dv SHUTDOWN_FINAL
to specify which queue should be used.
.Fn rm_at_shutdown
will remove an entry from either queue.
will remove entries from any queue.
.Pp
.Sh RETURN VALUES
.Fn at_shutdown