Move utmpx handling out of init(8).

This has the following advantages:

- During boot, the BOOT_TIME record is now written right after the file
  systems become writable, but before users are allowed to log in. This
  means that they can't cause `hidden logins' by logging in right before
  init(8) kicks in.

- The pututxline(3) function may potentially block on file locking,
  though this is very rare to occur. By placing it in an rc script, the
  user can still kill it with ^C if needed.

- Most importantly: jails don't use init(8). This means that a force
  reboot of a system running jails will leave stale entries in the
  accounting database of the jails individually.

1 files changed, 2 insertions, 9 deletions

diff --git a/sbin/init/init.8 b/sbin/init/init.8
index 264d822..1d7bc2e 100644
--- a/sbin/init/init.8
+++ b/sbin/init/init.8
@@ -31,7 +31,7 @@
 .\"     @(#)init.8	8.3 (Berkeley) 4/18/94
 .\" $FreeBSD$
 .\"
-.Dd January 23, 2011
+.Dd February 11, 2012
 .Dt INIT 8
 .Os
 .Sh NAME
@@ -146,14 +146,7 @@ executes a shell for that user.
 When this shell
 dies, either because the user logged out
 or an abnormal termination occurred (a signal),
-.Nm login
-records the logout in the user accounting
-database (see
-.Xr getutxent 3)
-and terminates.
-The cycle is
-then restarted by
-.Nm
+the cycle is restarted by
 executing a new
 .Nm getty
 for the line.