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1. Feature: for flexibility reasons and as a prerequisite to clean shutdowns, allow the configuration of a stop/shutdown command via rc.conf variable "jail_<name>_exec_stop" in addition to the start/boot command (rc.conf variable "jail_<name>_exec_start"). For backward compatibility reasons, rc.conf variable "jail_<name>_exec" is still supported, too. 2. Debug: Add the used boot/shutdown commands to the debug output of the /etc/rc.d/jail script, too. 3. Security: Run the Jail start/boot command in a cleaned environment to not leak information from the host to the Jail during startup. 4. Feature: Run the Jail stop/shutdown command "jail_<name>_exec_stop" on "/etc/rc.d/jail stop <name>" to allow a graceful shutdown of the Jail before its processes are just killed. 5. Bugfix: When killing the remaining Jail processes give the processes time to actually perform their termination sequence. Without this the subsequent umount(8) operations usually fail because the resources are still in use. Additionally, if after trying to TERM-inate the processes there are still processes hanging around, finally just KILL them. 6. Bugfix: In rc.shutdown, if running inside a Jail, skip the /etc/rc.d/* scripts which are flagged with the KEYWORD "nojail" to allow the correct operation of rc.shutdown under jail_<name>_exec_stop="/bin/sh /etc/rc.shutdown". This is analogous to what /etc/rc does inside a Jail. Now the following typical host-configuration for two Jails works as expected and correctly boots and shutdowns the Jails: ----------------------------------------------------------- # /etc/rc.conf: jail_enable="YES" jail_list="foo bar" jail_foo_rootdir="/j/foo" jail_foo_hostname="foo.example.com" jail_foo_ip="192.168.0.1" jail_foo_devfs_enable="YES" jail_foo_mount_enable="YES" jail_foo_exec_start="/bin/sh /etc/rc" jail_foo_exec_stop="/bin/sh /etc/rc.shutdown" jail_bar_rootdir="/j/bar" jail_bar_hostname="bar.example.com" jail_bar_ip="192.168.0.2" jail_bar_devfs_enable="YES" jail_bar_mount_enable="YES" jail_bar_exec_start="/path/to/kjailer -v" jail_bar_exec_stop="/bin/sh -c 'killall kjailer && sleep 60'" ----------------------------------------------------------- # /etc/fstab.foo /v/foo /j/foo/v/foo nullfs rw 0 0 ----------------------------------------------------------- # /etc/fstab.bar /v/bar /j/bar/v/bar nullfs rw 0 0 ----------------------------------------------------------- Reviewed by: freebsd-hackers MFC after: 2 weeks
103 lines
3.1 KiB
Bash
103 lines
3.1 KiB
Bash
#!/bin/sh
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#
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# Copyright (c) 1997 Ollivier Robert
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# Site-specific closing actions for daemons run by init on shutdown,
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# or before going single-user from multi-user.
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# Output and errors are directed to console by init, and the
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# console is the controlling terminal.
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stty status '^T'
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# Set shell to ignore SIGINT (2), but not children;
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# shell catches SIGQUIT (3) and returns to single user after fsck.
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trap : 2
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trap : 3 # shouldn't be needed
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HOME=/
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PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin
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export HOME PATH
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. /etc/rc.subr
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load_rc_config 'XXX'
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# reverse_list list
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# print the list in reverse order
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#
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reverse_list()
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{
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_revlist=
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for _revfile in $*; do
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_revlist="$_revfile${script_name_sep}$_revlist"
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done
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echo $_revlist
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}
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# If requested, start a watchdog timer in the background which
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# will terminate rc.shutdown if rc.shutdown doesn't complete
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# within the specified time.
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#
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_rcshutdown_watchdog=
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if [ -n "$rcshutdown_timeout" ]; then
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debug "Initiating watchdog timer."
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sleep $rcshutdown_timeout && (
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_msg="$rcshutdown_timeout second watchdog"
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_msg="$_msg timeout expired. Shutdown terminated."
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logger -t rc.shutdown "$_msg"
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echo "$_msg"
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date
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kill -KILL $$ >/dev/null 2>&1
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) &
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_rcshutdown_watchdog=$!
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fi
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# Determine the shutdown order of the /etc/rc.d scripts,
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# and perform the operation
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#
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rcorder_opts="-k shutdown"
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[ `/sbin/sysctl -n security.jail.jailed` -eq 1 ] && rcorder_opts="$rcorder_opts -s nojail"
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files=`rcorder ${rcorder_opts} /etc/rc.d/* 2>/dev/null`
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for _rc_elem in `reverse_list $files`; do
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debug "run_rc_script $_rc_elem faststop"
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run_rc_script $_rc_elem faststop
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done
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# Terminate the background watchdog timer (if it is running)
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#
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if [ -n "$_rcshutdown_watchdog" ]; then
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kill -TERM $_rcshutdown_watchdog >/dev/null 2>&1
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fi
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# Insert other shutdown procedures here
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echo '.'
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exit 0
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