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, 18 insertions, 0 deletions

diff --git a/etc/rc.d/utx b/etc/rc.d/utx
new file mode 100755
index 0000000..9035d12
--- /dev/null
+++ b/etc/rc.d/utx
@@ -0,0 +1,18 @@
+#!/bin/sh
+#
+# $FreeBSD$
+#
+
+# PROVIDE: utx
+# REQUIRE: DAEMON cleanvar
+# BEFORE:  LOGIN
+# KEYWORD: shutdown
+
+. /etc/rc.subr
+
+name="utx"
+start_cmd="utx boot"
+stop_cmd="utx shutdown"
+
+load_rc_config $name
+run_rc_command "$1"