add the ability to save the debconf package selection states in the sys...

add the ability to save the debconf package selection states in the sys handler, which aides in restoring installed packages with the right choices made

ChangeLog

@@ -45,6 +45,8 @@ version 0.9.6 -- unreleased
 	   (Closes: Trac#39)
 	 . support selection of VServers to run on, in the same way as in the
 	   dup handler, with the new vsnames configuration option ; (Closes: Trac#45)
+	 . add support for capturing the package debconf selection states using
+	   debconf-get-selections
 
 version 0.9.5 -- December 2, 2007
     backupninja changes

examples/example.sys

@@ -2,20 +2,27 @@
 # this config file will save various reports of vital system information.
 # by default, all the reports are enabled and are saved in /var/backups.
 #
-# requires dpkg, sfdisk, and hwinfo
+# requires dpkg, debconf-utils, sfdisk, and hwinfo
 #
-# (1) a list of all the packages installed and removed.
+# (1) a capture of the debconf package selection states. This file
+#     can be used to restore the answers to debconf questions for
+#     packages that you will be installing through (2) below. To
+#     do this, run: "debconf-set-selections < debconfsel.txt"
+#
+# (2) a list of all the packages installed and removed.
 #     this file can be used to restore the state of installed packages
-#     by running "dpkg --set-selections < dpkg-selections.txt
+#     by running "dpkg --set-selections < dpkg-selections.txt and
+#     then run "apt-get -u dselect-upgrade". If you have the 
+#     debconf-set-selections file from (1), you should restore those first.
 # 
-# (2) the partition table of all disks. 
+# (3) the partition table of all disks. 
 #     this partition table can be used to format another disk of
 #     the same size. this can be handy if using software raid and 
 #     you have a disk go bad. just replace the disk and partition it
 #     by running "sfdisk /dev/sdb < partitions.sdb.txt"
 #     (MAKE SURE YOU PARTITION THE CORRECT DISK!!!)
 #
-# (3) hardware information. 
+# (4) hardware information. 
 #     detailed information on most important aspects of the hardware.
 #
 
@@ -25,6 +32,7 @@
 # parentdir = /var/backups
 # packages = yes
 # packagesfile = /var/backups/dpkg-selections.txt
+# selectionsfile = /var/backups/debconfsel.txt
 
 # partitions = yes
 # NOTE: the __star__ below will be replaced by the disks found on the

handlers/sys.helper.in

@@ -3,7 +3,7 @@
 HELPERS="$HELPERS sys:general_hardware_and_system_info"
 
 sys_wizard() {
-   require_packages hwinfo
+   require_packages hwinfo debconf-utils
    checkBox "new sys action" "check options" \
        "packages" "list of all installed packages." on \
        "partitions" "the partition table of all disks." on  \
@@ -30,6 +30,7 @@ $partitions
 $sfdisk
 $hardware
 # packagesfile = /var/backups/dpkg-selections.txt
+# selectionsfile = /var/backups/debconfsel.txt
 # partitionsfile = /var/backups/partitions.__star__.txt
 # hardwarefile = /var/backups/hardware.txt
 

handlers/sys.in

@@ -3,18 +3,25 @@
 # this handler will save various reports of vital system information.
 # by default, all the reports are enabled and are saved in /var/backups.
 #
-# (1) a list of all the packages installed and removed.
+# (1) a capture of the debconf package selection states. This file
+#     can be used to restore the answers to debconf questions for
+#     packages that you will be installing through (2) below. To
+#     do this, run: "debconf-set-selections < debconfsel.txt"
+#
+# (2) a list of all the packages installed and removed.
 #     this file can be used to restore the state of installed packages
-#     by running "dpkg --set-selections < dpkg-selections.txt
+#     by running "dpkg --set-selections < dpkg-selections.txt and
+#     then run "apt-get -u dselect-upgrade". If you have the 
+#     debconf-set-selections file from (1), you should restore those first.
 # 
-# (2) the partition table of all disks. 
+# (3) the partition table of all disks. 
 #     this partition table can be used to format another disk of
 #     the same size. this can be handy if using software raid and 
 #     you have a disk go bad. just replace the disk and partition it
 #     by running "sfdisk /dev/sdb < partitions.sdb.txt"
 #     (MAKE SURE YOU PARTITION THE CORRECT DISK!!!)
 #
-# (3) hardware information. 
+# (4) hardware information. 
 #     write to a text file the important things which hwinfo can gleen.
 #
 
@@ -46,6 +53,8 @@ then
    getconf packagesfile $parentdir/dpkg-selections.txt
    getconf packagemgr   `which dpkg`
    getconf packagemgroptions ' --get-selections *'
+   getconf selectionsfile $parentir/debconfsel.txt
+   getconf debconfgetselections `debconf-get-selections`
 elif [ $os = "redhat" ]
 then
    getconf packagesfile  $parentdir/rpmpackages.txt 
@@ -109,13 +118,20 @@ if [ "$packages" == "yes" ]; then
          # is $packagemgr available inside $vserver ?
          if [ ! -x "$VROOTDIR/$vserver`$VSERVER $vserver exec which $packagemgr`" ]; then
             warning "can't find $packagemgr in vserver $vserver, skipping installed packages report."
-            continue
-         fi
+         else
             # don't expand * since it can be used in $packagemgroptions
             set -o noglob
             debug "$VSERVER $vserver exec $packagemgr $packagemgroptions > $VROOTDIR/$vserver$packagesfile"
 	    $VSERVER $vserver exec $packagemgr $packagemgroptions > $VROOTDIR/$vserver$packagesfile || fatal "can not save $packagemgr info to $packagesfile"
             set +o noglob
+         fi
+         # is $debconfgetselections available inside $vserver ?
+         if [ ! -x "$VROOTDIR/$vserver`$VSERVER $vserver exec which $debconfgetselections`" ]; then
+            warning "can't find $debconfgetselections in vserver $vserver, skipping package selection states."
+         else
+            debug "$VSERVER $vserver exec $debconfgetselections > $VROOTDIR/$vserver$selectionsfile"
+            $VSERVER $vserver exec $debconfgetselections > $VROOTDIR/$vserver$selectionsfile || fatal "can not save $debconfgetselections info to $selectionsfile"
+         fi
       done
    fi
    
@@ -129,7 +145,12 @@ if [ "$packages" == "yes" ]; then
       $packagemgr $packagemgroptions > $packagesfile || fatal "can not save $packagemgr info to $packagesfile"
       set +o noglob
    fi
-
+   if [ -z "$debconfgetselections" ]; then
+      warning "can't find ${debconfgetselections}, skilling package selection states."
+   else
+      debug "$debconfgetselections > $selectionsfile"
+      $debconfgetselections > $selectionsfile || fatal "can not save $debconfgetselections info to $selectionsfile"
+   fi
 fi
 
 ## System report ##############################