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| author | msmith <msmith@FreeBSD.org> | 1999-01-30 19:28:30 +0000 |
|---|---|---|
| committer | msmith <msmith@FreeBSD.org> | 1999-01-30 19:28:30 +0000 |
| commit | 8e7d737e1529ec05f41fa42a89ccb5a91f68d23f (patch) | |
| tree | 49bed3cdc8ad6ce2776e369cec384883bf6d995f /sys | |
| parent | 934d12e73e08297f16fe11dc488fd037a4546750 (diff) | |
| download | FreeBSD-src-8e7d737e1529ec05f41fa42a89ccb5a91f68d23f.zip FreeBSD-src-8e7d737e1529ec05f41fa42a89ccb5a91f68d23f.tar.gz | |
Add a new sysctl node kern.shutdown, off which shutdown-related things
can be hung.
Add a tunable delay at the beginning of the SHUTDOWN_FINAL at_shutdown
queue, allowing time to settle before we launch into the list of things
that are expected to turn the system off.
Fix a bug in at_shutdown_pri() where the second insertion always put
the item in second position in the queue.
Reviewed by: "D. Rock" <rock@cs.uni-sb.de>
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/kern_shutdown.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/sys/kern/kern_shutdown.c b/sys/kern/kern_shutdown.c index 4d6db41..1083b6d 100644 --- a/sys/kern/kern_shutdown.c +++ b/sys/kern/kern_shutdown.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)kern_shutdown.c 8.3 (Berkeley) 1/21/94 - * $Id: kern_shutdown.c,v 1.43 1998/12/04 22:54:51 archie Exp $ + * $Id: kern_shutdown.c,v 1.44 1998/12/28 23:03:00 msmith Exp $ */ #include "opt_ddb.h" @@ -88,6 +88,8 @@ SYSCTL_INT(_debug, OID_AUTO, debugger_on_panic, CTLFLAG_RW, &debugger_on_panic, 0, ""); #endif +SYSCTL_NODE(_kern, OID_AUTO, shutdown, CTLFLAG_RW, 0, "Shutdown environment"); + #ifdef HW_WDOG /* * If there is a hardware watchdog, point this at the function needed to @@ -470,7 +472,7 @@ at_shutdown(bootlist_fn function, void *arg, int queue) int at_shutdown_pri(bootlist_fn function, void *arg, int queue, int pri) { - sle_p ep, ip; + sle_p op, ep, ip; if (queue < SHUTDOWN_PRE_SYNC || queue > SHUTDOWN_FINAL) { @@ -492,7 +494,7 @@ at_shutdown_pri(bootlist_fn function, void *arg, int queue, int pri) if (ip == NULL) { LIST_INSERT_HEAD(&shutdown_lists[queue], ep, links); } else { - for (; LIST_NEXT(ip, links) != NULL; ip = LIST_NEXT(ip, links)) { + for (; ip != NULL; op = ip, ip = LIST_NEXT(ip, links)) { if (ep->priority < ip->priority) { LIST_INSERT_BEFORE(ip, ep, links); ep = NULL; @@ -500,7 +502,7 @@ at_shutdown_pri(bootlist_fn function, void *arg, int queue, int pri) } } if (ep != NULL) - LIST_INSERT_AFTER(ip, ep, links); + LIST_INSERT_AFTER(op, ep, links); } return (0); } @@ -528,3 +530,27 @@ rm_at_shutdown(bootlist_fn function, void *arg) } return (count); } + +/* + * Support for poweroff delay. + */ +static int poweroff_delay = 0; +SYSCTL_INT(_kern_shutdown, OID_AUTO, poweroff_delay, CTLFLAG_RW, + &poweroff_delay, 0, ""); + +static void poweroff_wait(int howto, void *unused) +{ + if(!(howto & RB_POWEROFF) || poweroff_delay <= 0) + return; + DELAY(poweroff_delay * 1000); +} + +/* + * XXX OK? This implies I know SHUTDOWN_PRI_LAST > SHUTDOWN_PRI_FIRST + */ +static void poweroff_conf(void *unused) +{ + at_shutdown_pri(poweroff_wait, NULL, SHUTDOWN_FINAL, SHUTDOWN_PRI_FIRST); +} + +SYSINIT(poweroff_conf, SI_SUB_INTRINSIC, SI_ORDER_ANY, poweroff_conf, NULL) |
