diff options
Diffstat (limited to 'recipes/nslu2-binary-only/unslung-rootfs/unsling')
| -rwxr-xr-x | recipes/nslu2-binary-only/unslung-rootfs/unsling | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/recipes/nslu2-binary-only/unslung-rootfs/unsling b/recipes/nslu2-binary-only/unslung-rootfs/unsling new file mode 100755 index 0000000000..539a1d2b58 --- /dev/null +++ b/recipes/nslu2-binary-only/unslung-rootfs/unsling @@ -0,0 +1,264 @@ +#!/bin/sh + +usage="Usage: $0 [-nopw] disk1|disk2" + +nopw=0 +if [ $# -gt 1 ] ; then + if [ "$1" = "-nopw" ] ; then + nopw=1 + shift + fi +fi + +# Set target disk + +if [ $# -eq 1 ] ; then + if [ "$1" = "disk1" ] ; then + mtch="/dev/sdb1 /share/hdd/data ext3 rw 0 0" + targ=/share/hdd/data + targconf=/share/hdd/conf + flag=.sdb1root + htmlinfo="disk1, /dev/sdb1" + fixconf=0 + elif [ "$1" = "disk2" ] ; then + mtch="/dev/sda1 /share/flash/data ext3 rw 0 0" + targ=/share/flash/data + targconf=/share/flash/conf + flag=.sda1root + htmlinfo="disk2, /dev/sda1" + fixconf=1 + else + echo $usage + exit 1 + fi +else + echo $usage + exit 1 +fi + +# MJW - The new "tar" method of unslinging does not care if the device +# has already been unslung. The following test has been removed. +# +# Check that we can unsling at all! An unsling operation creates a new +# rootfs, but it also marks the flash rootfs (with a flag file such as +# ".sda1root") so that subsequent boots do not create the "var.state" +# and "dev.state" mounts. Without those mounts, though, an attempt to +# unsling will write a new rootfs on the target with an empty /dev +# directory, which doesnt' work really well. So this check is all about +# making sure that we are in a state in which we are capable of +# performing the unsling operation. + +#echo "Checking if able to unsling..." +#echo +#m1="/dev/root /dev.state jffs2 rw 0 0" +#m2="/dev/root /var.state jffs2 rw 0 0" +#if ! grep "$m1" /proc/mounts >/dev/null 2>&1 || ! grep "$m2" /proc/mounts >/dev/null 2>&1 ; then +# echo "Error: This system is unable to properly unsling because certain" +# echo "required mounts (dev.state and/or var.state) are not available." +# echo "This is most probably because you have already unslung this system." +# echo +# +# if [ -f /.sda1root ] ; then +# rm -f /.sda1root +# elif [ -f /.sdb1root ] ; then +# rm -f /.sdb1root +# elif [ -f /.sda2root ] ; then +# rm -f /.sda2root +# elif [ -f /.sdb2root ] ; then +# rm -f /.sdb2root +# else +# echo "However, in this case, the flags that indicate an already-unslung" +# echo "system seem to be missing. Try restarting your NSLU2 to correct," +# echo "but if the problem persists, try re-flashing your NSLU2." +# exit 1 +# fi +# echo "The flags that indicate an already-unslung system have now been" +# echo "removed and the required mounts should now become present after" +# echo "reboot of the NSLU2." +# echo +# echo "1) Please unplug all drives from the NSLU2," +# echo "2) reboot," +# echo "3) and retry the unslinging process." +# exit 1 +#fi + +# Check it's a real mount point + +echo "Waiting for $targ ..." +CNT=120 +while [ $CNT -gt 0 ] +do + if grep "$mtch" /proc/mounts >/dev/null 2>&1 ; then + echo + echo "Target disk is $targ" + CNT=-1 + else + echo -ne "\r$CNT " + sleep 1 + CNT=`expr $CNT - 1` + fi +done +if [ $CNT -eq 0 ] ; then + echo + echo "Error: $targ ($htmlinfo) is not a mounted disk" + exit 1 +fi + +# Do a quick sanity check to make sure we're unslinging to a disk that's been +# formatted by the Linksys code. + +echo "Checking that $targ has been properly formatted..." +if ! [ -d $targ/public ] || ! [ -f $targconf/.dongle ] || ! [ -f $targconf/passwd ] ; then + echo + echo "Error: $targ does not appear to have been formatted by the" + echo "Linksys formatting utility. Please go to the web interface," + echo "and format the drive before unslinging." + exit 1 +fi + +echo "Checking that $targ is clean..." +if [ -f $targ/.unslung ] ; then + echo + echo "Error: $targ appears to have already been unslung to:" + cat $targ/.unslung + echo "Please go to the web interface, and format the drive before" + echo "unslinging." + echo + echo "(Or, if you wish to unsling without removing the current root" + echo "filesystem, simply remove the file $targ/.unslung and retry" + echo "the unsling -- but beware, you enter uncharted territory!)" + exit 1 +fi + +# Change the root password +if [ "$nopw" -eq 0 ] ; then + echo + echo "Please enter the new root password. This will be the new root" + echo "password used when the NSLU2 boots up with or without disks" + echo + passwd + if [ $? -ne 0 ] ; then + echo "Error setting password." + exit 1 + fi +# Quick sanity check, something may have gone wrong while we were +# waiting at the passwd prompt... + if ! [ -d $targ/public ] || ! [ -f $targconf/.dongle ] || ! [ -f $targconf/passwd ] ; then + echo + echo "Error: $targ appears to have vanished into thin air." + echo "This would indicate some type of problem with the USB cable," + echo "the device, or the formatting of the device." + exit 1 + fi + cp /etc/passwd /usr/local/passwd + grep "^root:" /etc/passwd >$targconf/passwd.new + grep -v "^root:" $targconf/passwd >>$targconf/passwd.new + mv $targconf/passwd $targconf/passwd.save + mv $targconf/passwd.new $targconf/passwd + chmod 644 $targconf/passwd +fi + +# Start at the root directory + +cd / + +# Save the existing ipkg database. + +rm -rf $targ/usr/lib/ipkg.old +if [ -f $targ/usr/lib/ipkg/status ] ; then + mv $targ/usr/lib/ipkg $targ/usr/lib/ipkg.old +fi + +# Copy the complete rootfs to the target. + +echo +echo "Copying the complete rootfs from / to $targ ... " +echo " (this will take just a couple of minutes)" +# Quick sanity check to avoid filling the flash... +if ! [ -d $targ/public ] || ! [ -f $targconf/.dongle ] || ! [ -f $targconf/passwd ] ; then + echo + echo "Error: $targ appears to have vanished into thin air." + echo "This would indicate some type of problem with the USB cable," + echo "the device, or the formatting of the device." + exit 1 +fi + +echo "./var/tmp" > /tmp/xfile +echo "./dev.state" >> /tmp/xfile +echo "./var.state" >> /tmp/xfile +echo "./lost+found" >>/tmp/xfile +mkdir -p /tmp/tmprootfs +/bin/mount /dev/mtdblock4 /tmp/tmprootfs +/bin/tar -c -C /tmp/tmprootfs -X /tmp/xfile -f - . | (cd $targ; /bin/tar -x -f -) +/bin/umount /tmp/tmprootfs +echo "Copy complete ..." +echo + +# Copy over the existing ipkg database. + +if [ -f $targ/usr/lib/ipkg.old/status ] ; then + echo "Preserving existing ipkg database on target disk." + ( cd $targ/usr/lib/ipkg.old ; tar cf - . ) | ( cd $targ/usr/lib/ipkg ; tar xf - ) +fi + +echo "Linking /usr/bin/ipkg executable on target disk." +rm -f $targ/usr/bin/ipkg ; ln -s /usr/bin/ipkg-cl $targ/usr/bin/ipkg + +echo "Linking /etc/motd to the unslung motd on target disk." +rm -f $targ/etc/motd ; ln -s /etc/motd-un $targ/etc/motd + +echo "Updating /home/httpd/html/home.htm with target disk info." +sedcommand="s#Running.from.Internal.Flash#Unslung to $htmlinfo#" +rm -f $targ/home/httpd/html/home.htm_bak +cp $targ/home/httpd/html/home.htm $targ/home/httpd/html/home.htm_bak +sed "$sedcommand" $targ/home/httpd/html/home.htm_bak > $targ/home/httpd/html/home.htm +chmod 644 $targ/home/httpd/html/home.htm + +# Create a few empty files that are expected to be present +touch $targ/var/log/wtmp +chmod 644 $targ/var/log/wtmp +touch $targ/var/run/utmp +chmod 644 $targ/var/run/utmp +mkdir -p $targ/var/tmp +chmod 777 $targ/var/tmp + +# The "user password" Linksys utility is hard-coded to /share/hdd; also the +# QuickSet utility seems to have some difficulty as well. Ugly fix is to +# add symlinks if we are unslinging to /share/flash. It might seem more +# reasonable to point to /etc/passwd, for example, but this approach seems to +# be more likely to avoid looping symlinks. + +if [ "$fixconf" -eq 1 ] ; then + ln -s ../../flash/conf/.htpasswd $targ/share/hdd/conf/.htpasswd + ln -s ../../flash/conf/backup_sh.conf $targ/share/hdd/conf/backup_sh.conf + ln -s ../../flash/conf/config $targ/share/hdd/conf/config + ln -s ../../flash/conf/group $targ/share/hdd/conf/group + ln -s ../../flash/conf/passwd $targ/share/hdd/conf/passwd + ln -s ../../flash/conf/server.log $targ/share/hdd/conf/server.log + ln -s ../../flash/conf/share $targ/share/hdd/conf/share + ln -s ../../flash/conf/share.info $targ/share/hdd/conf/share.info + ln -s ../../flash/conf/smb.conf $targ/share/hdd/conf/smb.conf + ln -s ../../flash/conf/smbpasswd $targ/share/hdd/conf/smbpasswd + ln -s ../../flash/conf/tmp $targ/share/hdd/conf/tmp + ln -s ../../flash/conf/upgrade $targ/share/hdd/conf/upgrade + ln -s ../../flash/conf/usrgrp.info $targ/share/hdd/conf/usrgrp.info +fi + +# Create the boot flag file. + +rm -f /.sd??root $targ/.sd??root + +echo "Creating /$flag to direct switchbox to boot from $targ." +echo > /$flag +echo > $targ/$flag + +# Done + +echo +echo "Unsling complete." +echo +echo "Leave the device $htmlinfo, plugged in and reboot (using" +echo "either the Web GUI, or the command \"DO_Reboot\") in order to boot" +echo "this system up into unslung mode." + +exit 0 |