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[easy-deb-chroot] / diablo / easy-chroot / src / sbin / qmount

diff --git a/diablo/easy-chroot/src/sbin/qmount b/diablo/easy-chroot/src/sbin/qmount
new file mode 100755 (executable)
index 0000000..dd70d37
--- /dev/null
+++ b/diablo/easy-chroot/src/sbin/qmount
@@ -0,0 +1,164 @@
+#!/bin/sh
+# Sets up (if necessary) and chroots into a different environment.
+# Expects root privileges, does not drop them. 
+
+# By Alan M Bruce (qole) with help from Benson Mitchell and Thomas Perl
+#
+# GPL licensed; keep code free!
+
+# This script should have a wrapper to set up extra variables,
+# OR, it can be run as a command:
+# qmount <part/file/'none'> <mountpoint>
+
+if [ "`whoami`" != "root" ] ; then
+  echo "please run me as root!"
+  exit 9
+fi
+
+IMGFILE=$1
+MNTPT=$2
+
+# echo qmount $IMGFILE $MNTPT
+
+#Ensure that we have an image or partition to mount
+
+if [ ! -f "$IMGFILE" ] && [ ! -b "$IMGFILE" ] ; then
+  MSG1=`printf "ERROR!\n\nThe image specified ($IMGFILE) does not exist or is neither\na regular nor a block special file.\n\nFirst parameter must be an image file or partition"`
+  if [ ! -f "/usr/bin/gxmessage" ] ; then
+    echo $MSG1 >/dev/stderr
+  else
+    gxmessage -center -alignbuttons center -buttons GTK_STOCK_OK:0 -geometry 680x250 -title "EZ-CHROOT ERROR" "$MSG1"
+  fi
+  exit 9
+fi
+
+#Ensure that we have a chroot directory to mount the image or partition on
+
+if [ "x$MNTPT" = "x" ] || [ "x`echo $MNTPT | grep '/'`" = "x"  ] ; then
+  MSG1=`printf "ERROR!\n\nNo chroot directory specified!\n\nSecond parameter must be chroot dir (eg. /debian)"`
+  if [ ! -f "/usr/bin/gxmessage" ] ; then
+    echo $MSG1 >/dev/stderr
+  else
+    gxmessage -center -alignbuttons center -buttons GTK_STOCK_OK:0 -geometry 680x250 -title "EZ-CHROOT ERROR" "$MSG1"
+  fi
+  exit 9
+fi
+
+#Check to see if already mounted
+if [ -f "$MNTPT/var/lock/qmount-complete" ] ; then
+  echo "$MNTPT has a qmount already!" >/dev/stderr
+  MTDIMGFILE=`cat $MNTPT/var/lock/qmount-complete`
+  if [ "$IMGFILE" != "$MTDIMGFILE" ] ; then
+    echo $MTDIMGFILE already mounted here! >/dev/stderr
+    MSG1=`printf "Mount problem!\n\n$MTDIMGFILE already mounted on $MNTPT"`
+       if [ ! -f "/usr/bin/gxmessage" ] ; then
+         echo $MSG1 >/dev/stderr
+       else
+         gxmessage -center -alignbuttons center -buttons GTK_STOCK_OK:0 -geometry 680x250 -title "EZ-CHROOT ERROR" "$MSG1"
+       fi
+    exit 9
+    # Instead of failing, we could unmount instead...
+    # echo Unmounting...
+    # closechroot $MNTPT
+  else
+    echo $MTDIMGFILE already mounted on $MNTPT... >/dev/stderr
+    exit 1
+  fi
+fi 
+
+if [ ! -f "$MNTPT/var/lock/qmount-complete" ] ; then
+ echo "Mounting..." >/dev/stderr
+ if [ "$IMGFILE" != "none" ] ; then
+
+   if [ -f "$IMGFILE" ] ; then
+     LOOP=loop,
+     echo "using image file: $IMGFILE" >/dev/stderr
+     if [ "x$IMGFS" = x ] ; then
+       IMGFS=`echo $IMGFILE | awk -F '.' '{print $NF}'`
+       echo "fs type is $IMGFS" >/dev/stderr
+     fi
+   else
+     LOOP=
+     echo "using device: $IMGFILE" >/dev/stderr
+     PARTINFO="`blkid -s TYPE $IMGFILE`"
+     if [ "x$IMGFS" = x ] ; then
+       IMGFS=`echo $PARTINFO | awk '{print $NF}' | awk -F '=' '{print $NF}' | sed s/\"//g`
+     fi
+   fi
+
+   if [ -d "/mnt/initfs/lib/modules/`uname -r`" ] ; then
+     MODULEPATH="/mnt/initfs/lib/modules/`uname -r`"
+   else
+     MODULEPATH=/mnt/initfs/lib/modules/2.6.21-omap1
+   fi
+   insmod "$MODULEPATH/mbcache.ko" 2>/dev/null
+
+   if [ "$IMGFS" != "ext3" ] && [ "$IMGFS" != "ext2" ] ; then
+     echo "Don't know $IMGFS: Using ext2 file system" >/dev/stderr
+     IMGFS=ext2
+   fi
+
+   echo "Using $IMGFS file system" >/dev/stderr
+   if [ "$IMGFS" = ext3 ] ; then
+     insmod "$MODULEPATH/jbd.ko" 2>/dev/null
+   fi
+
+   insmod "$MODULEPATH/$IMGFS.ko" 2>/dev/null
+
+   if [ "$LOOP" = "loop," ] ; then
+    echo "mounting $IMGFILE on the turbo-loop ;)" >/dev/stderr
+     insmod /lib/modules/2.6.21-omap1/dm-mod.ko 2>/dev/null
+     insmod /lib/modules/2.6.21-omap1/dm-loop.ko 2>/dev/null
+     NEXTLOOP=`ls -l /dev/dm-* 2>/dev/null | tail -1 | awk '{print $NF}' | awk -F '-' '{print $NF+1}'`
+     if [ "x$NEXTLOOP" = "x"  ] ; then
+       NEXTLOOP=0
+     fi
+     DMLOMSG=`dmlosetup loop$NEXTLOOP "$IMGFILE" 2>&1`
+     MNTMSG=`mount -t "$IMGFS" /dev/dm-$NEXTLOOP "$MNTPT" -o noatime 2>&1` 
+     if [ "$?" != 0 ] ; then
+       MSG1=`printf "Mount failure!\n\n$IMGFILE failed to mount on loop$NEXTLOOP\n\n$DMLOMSG\n$MNTMSG"`
+       if [ ! -f "/usr/bin/gxmessage" ] ; then
+         echo $MSG1 >/dev/stderr
+       else
+         gxmessage -center -alignbuttons center -buttons GTK_STOCK_OK:0 -geometry 680x250 -title "EZ-CHROOT ERROR" "$MSG1"
+       fi
+       exit 2
+     fi
+     echo ...$IMGFILE mounted on loop$NEXTLOOP >/dev/stderr
+   else
+     echo "mounting device: $IMGFILE" >/dev/stderr
+     if ! mount -t "$IMGFS" "$IMGFILE" "$MNTPT" -o ${LOOP}noatime ; then
+       MSG1=`printf "Mount failure!\n\n$IMGFILE failed to mount on $MNTPT"`
+       if [ ! -f "/usr/bin/gxmessage" ] ; then
+         echo $MSG1 >/dev/stderr
+       else
+         gxmessage -center -alignbuttons center -buttons GTK_STOCK_OK:0 -geometry 680x250 -title "EZ-CHROOT ERROR" "$MSG1"
+       fi
+       exit 3
+     fi
+
+   fi
+
+  else
+    echo "Not mounting any filesystem, chroot is $MNTPT" >/dev/stderr
+  fi 
+
+#All set up. Set flag for next time...
+
+ if [ ! -d "$MNTPT/var/lock" ] ; then
+   mkdir -p "$MNTPT/var/lock"
+ fi
+
+ # Place any commands you wish to run the first time you mount
+ # into the $MNTPT/var/run/onmount.rc file
+
+  if [ -f "$MNTPT/var/run/onmount.rc" ] ; then
+    . "$MNTPT/var/run/onmount.rc"
+  fi
+
+ echo $IMGFILE > "$MNTPT/var/lock/qmount-complete"
+ exit 0
+
+fi
+
+exit 1