svn commit: r191620 - in head: etc/rc.d share/man/man5
Ruslan Ermilov
ru at FreeBSD.org
Tue Apr 28 09:45:32 UTC 2009
Author: ru
Date: Tue Apr 28 09:45:32 2009
New Revision: 191620
URL: http://svn.freebsd.org/changeset/base/191620
Log:
Added (pre|post)(start|stop) jail hooks. These can be used to run
arbitrary commands (outside the jail) associated with said events,
e.g. to bring up/down CARP interfaces representing services run in
jails.
Reviewed by: simon
Modified:
head/etc/rc.d/jail
head/share/man/man5/rc.conf.5
Modified: head/etc/rc.d/jail
==============================================================================
--- head/etc/rc.d/jail Tue Apr 28 08:24:15 2009 (r191619)
+++ head/etc/rc.d/jail Tue Apr 28 09:45:32 2009 (r191620)
@@ -41,6 +41,14 @@ init_variables()
eval _ip=\"\$jail_${_j}_ip\"
eval _interface=\"\${jail_${_j}_interface:-${jail_interface}}\"
eval _exec=\"\$jail_${_j}_exec\"
+
+ i=0
+ while : ; do
+ eval _exec_prestart${i}=\"\${jail_${_j}_exec_prestart${i}:-\${jail_exec_prestart${i}}}\"
+ [ -z "$(eval echo \"\$_exec_prestart${i}\")" ] && break
+ i=$((i + 1))
+ done
+
eval _exec_start=\"\${jail_${_j}_exec_start:-${jail_exec_start}}\"
i=1
@@ -49,8 +57,30 @@ init_variables()
[ -z "$(eval echo \"\$_exec_afterstart${i}\")" ] && break
i=$((i + 1))
done
-
+
+ i=0
+ while : ; do
+ eval _exec_poststart${i}=\"\${jail_${_j}_exec_poststart${i}:-\${jail_exec_poststart${i}}}\"
+ [ -z "$(eval echo \"\$_exec_poststart${i}\")" ] && break
+ i=$((i + 1))
+ done
+
+ i=0
+ while : ; do
+ eval _exec_prestop${i}=\"\${jail_${_j}_exec_prestop${i}:-\${jail_exec_prestop${i}}}\"
+ [ -z "$(eval echo \"\$_exec_prestop${i}\")" ] && break
+ i=$((i + 1))
+ done
+
eval _exec_stop=\"\${jail_${_j}_exec_stop:-${jail_exec_stop}}\"
+
+ i=0
+ while : ; do
+ eval _exec_poststop${i}=\"\${jail_${_j}_exec_poststop${i}:-\${jail_exec_poststop${i}}}\"
+ [ -z "$(eval echo \"\$_exec_poststop${i}\")" ] && break
+ i=$((i + 1))
+ done
+
if [ -n "${_exec}" ]; then
# simple/backward-compatible execution
_exec_start="${_exec}"
@@ -102,9 +132,20 @@ init_variables()
debug "$_j procdir: $_procdir"
debug "$_j ruleset: $_ruleset"
debug "$_j fstab: $_fstab"
- debug "$_j exec start: $_exec_start"
debug "$_j consolelog: $_consolelog"
+ i=0
+ while : ; do
+ eval out=\"\${_exec_prestart${i}:-''}\"
+ if [ -z "$out" ]; then
+ break
+ fi
+ debug "$_j exec pre-start #${i}: ${out}"
+ i=$((i + 1))
+ done
+
+ debug "$_j exec start: $_exec_start"
+
i=1
while [ true ]; do
eval out=\"\${_exec_afterstart${i}:-''}\"
@@ -117,7 +158,38 @@ init_variables()
i=$((i + 1))
done
+ i=0
+ while : ; do
+ eval out=\"\${_exec_poststart${i}:-''}\"
+ if [ -z "$out" ]; then
+ break
+ fi
+ debug "$_j exec post-start #${i}: ${out}"
+ i=$((i + 1))
+ done
+
+ i=0
+ while : ; do
+ eval out=\"\${_exec_prestop${i}:-''}\"
+ if [ -z "$out" ]; then
+ break
+ fi
+ debug "$_j exec pre-stop #${i}: ${out}"
+ i=$((i + 1))
+ done
+
debug "$_j exec stop: $_exec_stop"
+
+ i=0
+ while : ; do
+ eval out=\"\${_exec_poststop${i}:-''}\"
+ if [ -z "$out" ]; then
+ break
+ fi
+ debug "$_j exec post-stop #${i}: ${out}"
+ i=$((i + 1))
+ done
+
debug "$_j flags: $_flags"
debug "$_j consolelog: $_consolelog"
@@ -555,6 +627,15 @@ jail_start()
fi
fi
_tmp_jail=${_tmp_dir}/jail.$$
+
+ i=0
+ while : ; do
+ eval out=\"\${_exec_prestart${i}:-''}\"
+ [ -z "$out" ] && break
+ ${out}
+ i=$((i + 1))
+ done
+
eval ${_setfib} jail ${_flags} -i ${_rootdir} ${_hostname} \
\"${_addrl}\" ${_exec_start} > ${_tmp_jail} 2>&1
@@ -575,6 +656,14 @@ jail_start()
echo -n " $_hostname"
tail +2 ${_tmp_jail} >${_consolelog}
echo ${_jail_id} > /var/run/jail_${_jail}.id
+
+ i=0
+ while : ; do
+ eval out=\"\${_exec_poststart${i}:-''}\"
+ [ -z "$out" ] && break
+ ${out}
+ i=$((i + 1))
+ done
else
jail_umount_fs
jail_ips "del"
@@ -596,6 +685,15 @@ jail_stop()
_jail_id=$(cat /var/run/jail_${_jail}.id)
if [ ! -z "${_jail_id}" ]; then
init_variables $_jail
+
+ i=0
+ while : ; do
+ eval out=\"\${_exec_prestop${i}:-''}\"
+ [ -z "$out" ] && break
+ ${out}
+ i=$((i + 1))
+ done
+
if [ -n "${_exec_stop}" ]; then
eval env -i /usr/sbin/jexec ${_jail_id} ${_exec_stop} \
>> ${_consolelog} 2>&1
@@ -605,6 +703,14 @@ jail_stop()
killall -j ${_jail_id} -KILL > /dev/null 2>&1
jail_umount_fs
echo -n " $_hostname"
+
+ i=0
+ while : ; do
+ eval out=\"\${_exec_poststop${i}:-''}\"
+ [ -z "$out" ] && break
+ ${out}
+ i=$((i + 1))
+ done
fi
jail_ips "del"
rm /var/run/jail_${_jail}.id
Modified: head/share/man/man5/rc.conf.5
==============================================================================
--- head/share/man/man5/rc.conf.5 Tue Apr 28 08:24:15 2009 (r191619)
+++ head/share/man/man5/rc.conf.5 Tue Apr 28 09:45:32 2009 (r191620)
@@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd January 27, 2009
+.Dd April 10, 2009
.Dt RC.CONF 5
.Os
.Sh NAME
@@ -3402,6 +3402,13 @@ to
.Dq Li YES
by default for every jail in
.Va jail_list .
+.It Va jail_exec_prestart Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+When set, use as default value for
+.Va jail_ Ns Ao Ar jname Ac Ns Va _exec_prestart Ns Aq Ar N
+for every jail in
+.Va jail_list .
.It Va jail_exec_start
.Pq Vt str
Unset by default.
@@ -3416,12 +3423,33 @@ When set, use as default value for
.Va jail_ Ns Ao Ar jname Ac Ns Va _exec_afterstart Ns Aq Ar N
for every jail in
.Va jail_list .
+.It Va jail_exec_poststart Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+When set, use as default value for
+.Va jail_ Ns Ao Ar jname Ac Ns Va _exec_poststart Ns Aq Ar N
+for every jail in
+.Va jail_list .
+.It Va jail_exec_prestop Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+When set, use as default value for
+.Va jail_ Ns Ao Ar jname Ac Ns Va _exec_prestop Ns Aq Ar N
+for every jail in
+.Va jail_list .
.It Va jail_exec_stop
Unset by default.
When set, use as default value for
.Va jail_ Ns Ao Ar jname Ac Ns Va _exec_stop
for every jail in
.Va jail_list .
+.It Va jail_exec_poststop Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+When set, use as default value for
+.Va jail_ Ns Ao Ar jname Ac Ns Va _exec_poststop Ns Aq Ar N
+for every jail in
+.Va jail_list .
.It Va jail_ Ns Ao Ar jname Ac Ns Va _rootdir
.Pq Vt str
Unset by default.
@@ -3537,27 +3565,68 @@ When set to
mount the process file system inside jail
.Ar jname
at jail startup.
+.It Va jail_ Ns Ao Ar jname Ac Ns Va _exec_prestart Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+This is the command run as
+.Ar N Ns
+th command
+before jail startup, where
+.Ar N
+is 0, 1, and so on.
+It is run outside the jail.
.It Va jail_ Ns Ao Ar jname Ac Ns Va _exec_start
.Pq Vt str
Set to
.Dq Li /bin/sh /etc/rc
by default.
-This is the command executed at jail startup.
+This is the command executed in a jail at jail startup.
.It Va jail_ Ns Ao Ar jname Ac Ns Va _exec_afterstart Ns Aq Ar N
.Pq Vt str
Unset by default.
This is the command run as
.Ar N Ns
th command
+in a jail
after jail startup, where
.Ar N
is 1, 2, and so on.
+.It Va jail_ Ns Ao Ar jname Ac Ns Va _exec_poststart Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+This is the command run as
+.Ar N Ns
+th command
+after jail startup, where
+.Ar N
+is 0, 1, and so on.
+It is run outside the jail.
+.It Va jail_ Ns Ao Ar jname Ac Ns Va _exec_prestop Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+This is the command run as
+.Ar N Ns
+th command
+before jail shutdown, where
+.Ar N
+is 0, 1, and so on.
+It is run outside the jail.
.It Va jail_ Ns Ao Ar jname Ac Ns Va _exec_stop
.Pq Vt str
Set to
.Dq Li /bin/sh /etc/rc.shutdown
by default.
-This is the command executed at jail shutdown.
+This is the command executed in a jail at jail shutdown.
+.It Va jail_ Ns Ao Ar jname Ac Ns Va _exec_poststop Ns Aq Ar N
+.Pq Vt str
+Unset by default.
+This is the command run as
+.Ar N Ns
+th command
+after jail shutdown, where
+.Ar N
+is 0, 1, and so on.
+It is run outside the jail.
.It Va jail_set_hostname_allow
.Pq Vt bool
If set to
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