Started experimenting with archive and restore of jails

1 files changed, 58 insertions, 7 deletions

diff --git a/ezjail-admin b/ezjail-admin
index 372f30e..4fcd0b8 100755
--- a/ezjail-admin
+++ b/ezjail-admin
@@ -34,13 +34,14 @@ ezjail_dirlist="bin boot lib libexec rescue sbin usr/bin usr/games usr/include u
 case `uname -p` in amd64) ezjail_dirlist="${ezjail_dirlist} usr/lib32";; esac
 
 # Synopsis messages
-ezjail_usage_ezjailadmin="Usage: ${ezjail_admin} [config|console|create|delete|install|list|update] {params}"
+ezjail_usage_ezjailadmin="Usage: ${ezjail_admin} [archive|config|console|create|delete|install|list|update] {params}"
 ezjail_usage_install="Usage: ${ezjail_admin} install [-mps] [-h host] [-r release]"
-ezjail_usage_create="Usage: ${ezjail_admin} create [-xbi] [-f flavour] [-r jailroot] [-s size] [-c bde|eli] [-C args] jailname jailip"
+ezjail_usage_create="Usage: ${ezjail_admin} create [-xbi] [-f flavour] [-r jailroot] [-s size] [-c bde|eli] [-C args] [-r archive] jailname jailip"
 ezjail_usage_delete="Usage: ${ezjail_admin} delete [-w] jailname"
 ezjail_usage_update="Usage: ${ezjail_admin} update [-s sourcetree] [-i] [-pP]"
 ezjail_usage_config="Usage: ${ezjail_admin} config [-r run|norun] [-n newname] [-i attach|detach|fsck] jailname"
 ezjail_usage_console="Usage: ${ezjail_admin} console [-f] [-e command] jailname"
+ezjail_usage_archive="Usage: ${ezjail_admin} archive [-f] [-r archive] [-d archivedir] jailname"
 ezjail_usage_list="Usage: ${ezjail_admin} list"
 
 ################################
@@ -221,11 +222,12 @@ case "$1" in
 ######################## ezjail-admin CREATE ########################
 create)
   # Clean variables, prevent polution
-  unset ezjail_rootdir ezjail_flavour ezjail_softlink ezjail_image ezjail_imagetype ezjail_imageparams ezjail_imagesize ezjail_device ezjail_config ezjail_attachparams ezjail_exists ezjail_attachblocking ezjail_forceblocking ezjail_sourcedevice ezjail_rootdirempty
-  shift; while getopts :f:r:s:xbic:C: arg; do case ${arg} in
+  unset ezjail_rootdir ezjail_flavour ezjail_softlink ezjail_image ezjail_imagetype ezjail_imageparams ezjail_imagesize ezjail_device ezjail_config ezjail_attachparams ezjail_exists ezjail_attachblocking ezjail_forceblocking ezjail_sourcedevice ezjail_rootdirempty ezjail_fromarchive
+  shift; while getopts :f:r:s:xbic:C:r: arg; do case ${arg} in
     x) ezjail_exists="YES";;
     r) ezjail_rootdir="${OPTARG}";;
     f) ezjail_flavour="${OPTARG}";;
+    r) ezjail_fromarchive="${OPTARG}";;
     c) ezjail_imagetype="${OPTARG}";;
     C) ezjail_imageparams="${OPTARG}";;
     b) ezjail_forceblocking="YES";;
@@ -298,6 +300,11 @@ create)
   # do some sanity checks on the selected flavour (if any)
   [ "${ezjail_flavour}" -a ! -d ${ezjail_flavours}/${ezjail_flavour} ] && exerr "Error: Flavour config directory ${ezjail_flavours}/${ezjail_flavour} not found."
 
+  # check for restore circumstances, normally this is invoked by the restore command
+  [ "${ezjail_fromarchive}" -a "${ezjail_exists}" ] && exerr "Error: Cannot restore a jail that exists."
+  [ "${ezjail_fromarchive}" -a "${ezjail_flavour}" ] && exerr "Error: Cannot apply flavours to a restored jail."
+  [ "${ezjail_fromarchive}" -a ! -r ${ezjail_fromarchive} ] & exerr "Error: Cannot restore from non existin garchive: ${ezjail_fromarchive}."
+
   #
   # All sanity checks that may lead to errors are hopefully passed here
   #
@@ -320,6 +327,7 @@ create)
 
       # Now create jail disc image
       touch "${ezjail_image}"
+      echo "Creating jail image ${ezjail_image}. This may take a while."
       if [ "${ezjail_imageblockcount}" -gt 0 ]; then
         dd if=${ezjail_sourcedevice} of="${ezjail_image}" bs=1m count=${ezjail_imageblockcount} || exerr "Error: Could not (or not fully) create the image file. You might want to check (and possibly remove) the file ${ezjail_image}. The image size provided was ${ezjail_imagesize}."
       fi
@@ -368,12 +376,16 @@ create)
     fi
   fi
 
-  # now take a copy of our template jail
-  if [ -z "${ezjail_exists}" ]; then
+  if [ -z "${ezjail_fromarchive}" ]; then
+    mkdir -p ${ezjail_rootdir} && tar xfp ${ezjail_fromarchive} -C ${ezjail_rootdir} --strip-components 1 ezjail
+    [ $? = 0 ] || detach_images || exerr "Error: Could not extract archive from ${ezjail_fromarchive}."
+  elif [ -z "${ezjail_exists}" ]; then
+    # now take a copy of our template jail
     mkdir -p ${ezjail_rootdir} && cd ${ezjail_jailtemplate} && find * | cpio -p -v ${ezjail_rootdir} > /dev/null
     [ $? = 0 ] || detach_images || exerr "Error: Could not copy template jail."
   fi
 
+
   # if a soft link is necessary, create it now
   [ "${ezjail_softlink}" ] && ln -s ${ezjail_rootdir} ${ezjail_softlink}
 
@@ -688,10 +700,49 @@ console)
 
   exec jexec ${ezjail_id} ${ezjail_default_execute}
   ;;
+######################## ezjail-admin ARCHIVE ########################
+archive)
+  # Clean variables, prevent polution
+  unset ezjail_archive ezjail_force ezjail_taroption
+
+  shift; while getopts :fr:d: arg; do case ${arg} in
+    f) ezjail_force=${OPTARG};;
+    r) ezjail_archive=${OPTARG};;
+    d) ezjail_archivedir=${OPTARG};;
+    ?) exerr ${ezjail_usage_archive};;
+  esac; done; shift $(( ${OPTIND} - 1 ))
+
+  [ $# -eq 1 ] || exerr ${ezjail_usage_archive}
+
+  # Jail name mandatory
+  fetchjailinfo $1
+
+  # check for existence of jail in our records
+  [ -n "${ezjail_config}" ] || exerr "Error: Nothing known about jail ${ezjail_name}."
+
+  # if jail is still running, refuse to go any further - unless forced
+  [ -n "${ezjail_id}" -a -z "${ezjail_force}" ] && exerr "Error: Jail appears to be still running, stop it first or [-f]orce archiving."
+
+  # if no archive name was specified, make one up
+  [ -z "${ezjail_archive}" ] && ezjail_archive="${ezjail_safename}-`date +%Y%m%d%H%M.%S`.tar.bz2
+
+  # prepend archive directory
+  ezjail_archive="${ezjail_archivedir%/}"/"${ezjail_archive}"
+
+  case ${ezjail_archive} in
+    *.tar.bz|*.tar.bz2|*.tbz|*.tar.bzip ) ezjail_taroption="j" ;;
+    *.tar.gz|*.tgz|*.tar.gzip)            ezjail_taroption="z" ;;
+    *.tar) ;;
+    *) ezjail_archive="${ezjail_archive}.tar" ;;
+  esac;
+
+# TODO:  tar cpf${ezjail_taroption} ${ezjail_archive} --atime-preserve --one-file-system  ${ezjail_config} -C ${ezjail_root} 
+
+  ;;
 ######################## ezjail-admin CONFIG ########################
 config)
   # Clean variables, prevent polution
-  unset ezjail_setrunnable ezjail_imageaction
+  unset ezjail_setrunnable ezjail_imageaction ezjail_new_name
 
   shift; while getopts :r:i:n: arg; do case ${arg} in
     i) ezjail_imageaction=${OPTARG};;