From 6628078be74eb5bd56553c7fa404e9e925b9dc89 Mon Sep 17 00:00:00 2001
From: erdgeist <erdgeist@erdgeist.org>
Date: Tue, 21 Mar 2006 14:06:09 +0000
Subject: ezjail.sh now is ready for image jails. Merging ezjail-img.sh to
 ezjail-admin soon

---
 ezjail.sh | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 86 insertions(+), 9 deletions(-)

diff --git a/ezjail.sh b/ezjail.sh
index f278166..6fb45ab 100755
--- a/ezjail.sh
+++ b/ezjail.sh
@@ -14,7 +14,8 @@
 # Please do not change this file, configure in EZJAIL_PREFIX/etc/ezjail.conf
 
 # ugly: this variable is set on port install time
-ezjail_prefix=EZJAIL_PREFIX
+#ezjail_prefix=EZJAIL_PREFIX
+ezjail_prefix=/usr/local
 
 . /etc/rc.subr
 
@@ -32,18 +33,94 @@ do_cmd()
 {
   action=$1; message=$2; shift 2;
   ezjail_list=
-  [ -n "$*" ] && ezjail_list=`echo -n $* | tr -c "[:alnum:] " _` || echo -n "${message##_}"
-  ezjail_list=${ezjail_list:-`ls ${ezjail_prefix}/etc/ezjail/`}
   ezjail_pass=
+  ezjail_mds=
+  ezjail_fromrc="YES"
+
+  # If a jail list is given on command line, process it
+  # If not, fetch it from our config directory
+  if [ -n "$*" ]; then
+    ezjail_list=`echo -n $* | tr -c "[:alnum:] " _` 
+    ezjail_fromrc="NO"
+  else
+    ezjail_list=${ezjail_list:-`ls ${ezjail_prefix}/etc/ezjail/`}
+    echo -n "${message##_}"
+  fi
+
   for ezjail in ${ezjail_list}; do
-    if [ -f ${ezjail_prefix}/etc/ezjail/${ezjail} ]; then
-      . ${ezjail_prefix}/etc/ezjail/${ezjail}
-      ezjail_pass="${ezjail_pass} ${ezjail}"
-    else
-      echo " Warning: Jail ${ezjail} not found."
-    fi
+    # If jail is temporary disabled (dot in name), skip it
+    [ ${ezjail%.*} = ${ezjail} ] || continue
+
+    # Check for jails config
+    [ ! -r ${ezjail_prefix}/etc/ezjail/${ezjail} ] && echo " Warning: Jail ${ezjail} not found." && continue
+
+    # Read config file
+    . ${ezjail_prefix}/etc/ezjail/${ezjail}
+
+    eval ezjail_root=\"\$jail_${ezjail}_rootdir\"
+    eval ezjail_image=\"\$jail_${ezjail}_image\"
+    eval ezjail_crypt=\"\$jail_${ezjail}_cryptimage\"
+
+    # Cannot auto mount crypto jails without interrupting boot process
+    [ "${ezjail_fromrc}" = "YES" -a "${ezjail_crypt}" = "YES" ] && continue
+
+    # Try to attach (crypto) devices
+    [ "${ezjail_image}" ] && attach_detach_pre
+
+    ezjail_pass="${ezjail_pass} ${ezjail}"
   done
+
+  # Pass control to jail script which does the actual work
   [ "${ezjail_pass}" ] && sh /etc/rc.d/jail one${action} ${ezjail_pass}
+
+  # Can only detach after unmounting (from fstab.JAILNAME in /etc/rc.d/jail)
+  attach_detach_post
+}
+
+attach_detach_pre ()
+{
+  if [ "${action}" = start ]; then
+    # If jail is running, do not mount devices, this is the same check as
+    # /etc/rc.d/jail does
+    [ -e /var/run/jail_${ezjail}.id ] && return
+
+    # Create a memory disc from jail image
+    ezjail_device=`mdconfig -a -t vnode -f ${ezjail_image}`
+
+    # If this is a crypto jail, try to mount it, remind user, which jail
+    # this is. In this case, the device to mount is 
+    if [ "${ezjail_crypt}" = "YES" ]; then
+      echo "Attaching gbde device for image jail ${ezjail}..."
+      gbde attach /dev/${ezjail_device} -l ${ezjail_image%.img}.lock
+
+      # Device to mount is not md anymore
+      ezjail_device=${ezjail_device}.bde
+    fi
+
+    # relink image device
+    rm -f ${ezjail_root}.device
+    ln -s /dev/${ezjail_device} ${ezjail_root}.device
+  else
+    # If soft link to device is not set, we cannot unmount
+    [ -e ${ezjail_root}.device ] || return
+
+    # Fetch destination of soft link
+    ezjail_device=`stat -f "%Y" ${ezjail_root}.device`
+
+    # Add this device to the list of devices to be unmounted
+    ezjail_mds="${ezjail_mds} ${ezjail_device%.bde}"
+
+    # Remove soft link (which acts as a lock)
+    rm -f ${ezjail_root}.device
+  fi
+}
+
+attach_detach_post () {
+  # In case of a stop, unmount image devices after stopping jails
+  for md in ${ezjail_mds}; do
+    [ -e ${md}.bde ] && gbde detach ${md}
+    mdconfig -d -u ${md#/dev/}
+  done
 }
 
 run_rc_command $*
-- 
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