K 10
svn:author
V 6
alfred
K 8
svn:date
V 27
2002-08-13T08:47:17.000000Z
K 7
svn:log
V 482
Make SYSVSEM mpsafe.  Each semaphore set gets its own lock, however
there is a global lock over the undo structures because of the way
they are managed.

Switch to using SLIST instead of rolling our own linked list.

Fix several races where a permission check was done before a
copyin/copyout, if the copy happened to fault it may have been
possible to race for access to a semaphore set that one shouldn't
have access to.

Requested by: rwatson
Tested by: NetBSD regression suite.

END