Author: jh
Date: Sun Dec 12 08:52:13 2010
New Revision: 216391
URL: http://svn.freebsd.org/changeset/base/216391
Log:
Handle the special ruleset 0 in devfs_ruleset_use(). An attempt set the
current ruleset to 0 with command "devfs ruleset 0" triggered a KASSERT
in devfs_ruleset_create().
PR: kern/125030
Submitted by: Mateusz Guzik
Modified:
head/sys/fs/devfs/devfs_rule.c
Modified: head/sys/fs/devfs/devfs_rule.c
==============================================================================
--- head/sys/fs/devfs/devfs_rule.c Sun Dec 12 06:00:26 2010
(r216390)
+++ head/sys/fs/devfs/devfs_rule.c Sun Dec 12 08:52:13 2010
(r216391)
@@ -742,6 +742,11 @@ devfs_ruleset_use(devfs_rsnum rsnum, str
devfs_ruleset_reap(cds);
}
+ if (rsnum == 0) {
+ dm->dm_ruleset = 0;
+ return (0);
+ }
+
ds = devfs_ruleset_bynum(rsnum);
if (ds == NULL)
ds = devfs_ruleset_create(rsnum);
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