save-config: fix syntax error [Closes: issue1247]

[grml-autoconfig.git] / bin / save-config

diff --git a/bin/save-config b/bin/save-config
index e2f9854..fea435a 100755 (executable)
--- a/bin/save-config
+++ b/bin/save-config
@@ -4,7 +4,6 @@
 # Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
 # Bug-Reports:   see http://grml.org/bugs/
 # License:       This file is licensed under the GPL v2.
-# Latest change: Son Mai 13 11:46:44 CEST 2007 [mika]
 ################################################################################
 
 # some zsh-stuff {{{
@@ -15,18 +14,29 @@
 # }}}
 
 # set variables  {{{
-
-  # old linuxrc version:
-  [ -d /cdrom ]      && OLDLAYOUT=1 || OLDLAYOUT=''
-  # new initramfs layout:
-  [ -d /live/image ] && NEWLAYOUT=1 || NEWLAYOUT=''
-
   LANG=C
   LC_ALL=C
   [[ $UID != 0 ]] && runas='sudo' # important for /etc
 
-  check4progs mutt || echo "Warning, mutt not available for mail handling.">&2
-  check4progs findchanged tar || { echo "Sorry, can't continue. Exiting.">&2 ; exit 1 }
+  if [ -d /lib/live/mount/overlay ] ; then # since around December 2012
+    CHANGE_DIR='/lib/live/mount/overlay'
+  elif [ -d /live/overlay ] ; then  # until around December 2012
+    CHANGE_DIR='/live/overlay'
+  elif [ -d /live/image ] ; then # old version
+    CHANGE_DIR='/live/image'
+  else
+    echo "Error: no overlay directories found (like /lib/live/mount/overlay or /live/overlay)." >&2
+    bailout; exit 1
+  fi
+
+  if [ -d /live/rofs ] ; then
+    ORIG_DIR="$(find /live/rofs/ -maxdepth 1 -name \*.squashfs | head -1)"
+  else # old version
+    ORIG_DIR="/GRML"
+  fi
+
+  check4progs mutt &>/dev/null || echo "Warning, mutt not available for mail handling.">&2
+  check4progs tar || { echo "Sorry, can't continue. Exiting.">&2 ; bailout ; exit 1 }
 
   CONFIG=/etc/grml/saveconfig
   [ -r "$CONFIG" ] && . $CONFIG
@@ -37,10 +47,11 @@
   GRML_VERSION=$(awk '{print $1}' /etc/grml_version 2>/dev/null || print "not a grml system")
   KERNEL=$(uname -a)
 
-  TMPDIR=/tmp
-  MAILFILE="$TMPDIR/mail.txt"
+  TMPDIR='/tmp'
+  MAILFILE="${TMPDIR}/mail.txt"
 
   [ -n "$FILELIST" ] || FILELIST=$(mktemp $TMPDIR/filelist.XXXXXX)
+# }}}
 
 # functions {{{
 debug(){
@@ -57,6 +68,16 @@ bailout(){
 }
 
 trap bailout 1 2 3 15
+
+findchanged() {
+  if [ -d "$1" ]; then
+    for i in `(cd "$1"; find . -type f 2>/dev/null | sed 's,^\./,,g' | grep -v ' ' )`; do
+      cmp -s "$1/$i" "$2/$i" || echo "$1/$i"
+    done
+  elif [ -e "$1" ]; then
+    cmp -s "$1" "$2" || echo "$1"
+  fi
+}
 # }}}
 
 # usage information {{{
@@ -122,32 +143,37 @@ save_grmlhome(){
 save_etc(){
   debug "save etc"
   if [ -n "$NEWLAYOUT" ] ; then
-     $runas find /live/cow/etc | sed -e 's#/live/cow## ; /etc$/d' >> $FILELIST
+     $runas find "${CHANGE_DIR}/etc" | sed -e "s#${CHANGE_DIR}## ; /etc$/d" >> $FILELIST
   else
-     $runas findchanged /etc /GRML/etc >> $FILELIST
+     $runas findchanged /etc "${ORIG_DIR}/etc" >> $FILELIST
   fi
 }
 
 save_configdir(){
   debug "save configdir"
   if [ -d $HOME/config ] ; then
-     ls $HOME/config/*  >> $FILELIST  2>/dev/null
+     ls $HOME/config/*  >> $FILELIST 2>/dev/null
      ls $HOME/config/.* >> $FILELIST 2>/dev/null
   fi
 }
+# }}}
 
 # create configuration file {{{
 create_config(){
   if ! [ -r "$FILELIST" ]; then
-     echo "Sorry, filelist $FILELIST could not be read." >&2
-     echo "Error when generating $FILENAME." >&2
+    echo "Filelist $FILELIST could not be read." >&2
+    echo "Error when generating $FILENAME." >&2
+    bailout ; exit 1
   else
-     # GNU tar sucks so much, really. Avoid the "file changed as we read it":
-     tar cf /dev/null /etc
-     # now really execute the according tar command:
-     BZIP2=-9 $runas tar -T - -cpPjf "$FILENAME" <"$FILELIST" && \
-     echo "Successfully stored configuration in file $FILENAME"   || \
-     echo "Error when generating $FILENAME." >&2
+    # GNU tar sucks so much, really. Avoid the "file changed as we read it":
+    tar cf /dev/null /etc
+    # now really execute the according tar command:
+    if BZIP2=-9 $runas tar -T - -cpPjf "$FILENAME" <"$FILELIST" ; then
+      echo "Successfully stored configuration in file $FILENAME"
+    else
+      echo "Error when generating $FILENAME." >&2
+      bailout ; exit 1
+    fi
   fi
 }
 # }}}
@@ -213,6 +239,7 @@ parse_options()
 parse_options $*
 # }}}
 
+# execution wrapper {{{
 runit(){
    if [[ $SAVE_HOME == "yes" ]]; then
      debug "running save_home"
@@ -235,9 +262,11 @@ runit(){
      SETSAVE=1
    fi
    if [ -z $SETSAVE ] ; then
-     echo "Sorry, you did not select any configuration which should be saved. Exiting." ; exit 1
+     echo "Sorry, you did not select any configuration which should be saved. Exiting."
+     bailout ; exit 1
    fi
 }
+# }}}
 
 # now run it
   runit