wok-stable rev 7850

busybox/init: reduce subroot= waste
author Pascal Bellard <pascal.bellard@slitaz.org>
date Tue Dec 28 23:15:27 2010 +0100 (2010-12-28)
parents e176d206d075
children 403fb8adf07d
files busybox/stuff/init
line diff
     1.1 --- a/busybox/stuff/init	Tue Dec 28 15:47:46 2010 +0000
     1.2 +++ b/busybox/stuff/init	Tue Dec 28 23:15:27 2010 +0100
     1.3 @@ -4,7 +4,7 @@
     1.4  {
     1.5  	umount /proc
     1.6  	echo -e "\\033[70G[ \\033[1;33mOK\\033[0;39m ]"
     1.7 -	exec /sbin/switch_root mnt$subroot /sbin/init
     1.8 +	exec /sbin/switch_root mnt /sbin/init
     1.9  }
    1.10  
    1.11  failed()
    1.12 @@ -15,7 +15,7 @@
    1.13  
    1.14  try_init()
    1.15  {
    1.16 -	if [ ! -d /mnt$subroot/etc ] && grep -q cryptoroot= /proc/cmdline; then
    1.17 +	if [ ! -d /mnt/etc ] && grep -q cryptoroot= /proc/cmdline; then
    1.18  		modprobe dm-mod
    1.19  		modprobe dm-crypt
    1.20  		modprobe aes-i586
    1.21 @@ -33,10 +33,10 @@
    1.22  		fi
    1.23  		mount /dev/mapper/$dmlabel /mnt
    1.24  	fi
    1.25 -	if [ -d /mnt$subroot/etc ]; then
    1.26 +	if [ -d /mnt/etc ]; then
    1.27  		umount /sys
    1.28  		[ -n "$1" ] && for i in $@ ; do
    1.29 -			cp -a $i /mnt$subroot$(dirname $i)
    1.30 +			cp -a $i /mnt$(dirname $i)
    1.31  		done
    1.32  		mount /mnt -o remount,ro
    1.33  		launch_init
    1.34 @@ -125,9 +125,16 @@
    1.35  fi
    1.36  grep -q cryptoroot= /proc/cmdline && try_init
    1.37  umount /sys
    1.38 -grep -q subroot= /proc/cmdline &&
    1.39 +if grep -q subroot= /proc/cmdline; then
    1.40  	subroot="/$(sed 's/.*subroot=\([^ ]*\).*/\1/' < /proc/cmdline)" &&
    1.41 -	exec chroot /mnt$subroot /sbin/init
    1.42 +	if [ -s /usr/share/boot/busybox-static ]; then
    1.43 +		mv /usr/share/boot/busybox-static .
    1.44 +		/busybox-static rm -rf /etc /lib /*bin /usr /var
    1.45 +		exec /busybox-static chroot /mnt$subroot /sbin/init
    1.46 +	else
    1.47 +		exec chroot /mnt$subroot /sbin/init
    1.48 +	fi
    1.49 +fi
    1.50  echo -n "Switching / to tmpfs..."
    1.51  size="$(grep rootfssize= < /proc/cmdline | \
    1.52  	sed 's/.*rootfssize=\([0-9]*[kmg%]\).*/-o size=\1/')"