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Merge pull request #2082 from vpeter4/liveusb

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liveusb: enable running OpenELEC from only one USB stick
This commit is contained in:
Stephan Raue 2013-03-20 20:54:20 -07:00
commit f4d7f4cf7a
1 changed files with 75 additions and 4 deletions
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79
packages/initramfs/sysutils/busybox-initramfs/scripts/init
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@ -36,6 +36,7 @@
IMAGE_KERNEL="KERNEL"
IMAGE_SYSTEM="SYSTEM"
BOOT_STEP="start"
REBOOT="0"
MD5_FAILED="0"
MD5_NOCHECK="0"
@ -43,6 +44,7 @@
NBD_DEVS="0"
FLASH_FREE_MIN="5"
LIVE_FLASH_FREE_MIN="50"
INSTALLED_MEMORY=`cat /proc/meminfo | grep 'MemTotal:' | awk '{print $2}'`
SYSTEM_TORAM_LIMIT=1024000
@ -292,6 +294,9 @@
NFS=*)
MOUNT_CMD="mount_nfs"
;;
FILE=*)
MOUNT_CMD="mount_common"
;;
*)
error "mount_part" "Unknown filesystem $1"
;;
@ -304,7 +309,10 @@
echo "updating $1..."
$IONICE /bin/busybox mount -o remount,rw /flash
$IONICE /bin/busybox mv $UPDATE_DIR/$2 $3
$IONICE /bin/busybox mount -o remount,ro /flash
# loopback file needs writable /flash all the time
if [ "${disk%%=*}" != "FILE" ]; then
$IONICE /bin/busybox mount -o remount,ro /flash
fi
$IONICE /bin/busybox sync
fi
}
@ -327,7 +335,6 @@
fi
}
hfsdiskprep() {
for DEVICE in /dev/sd*; do
for device in $(/bin/busybox blkid $DEVICE); do
@ -398,6 +405,65 @@
progress "Mounting storage"
if [ -n "$disk" ]; then
if [ "${disk%%=*}" = "FILE" ]; then
target="${disk%%,*}"
storage_loop_file="/flash/${target#*=}"
$IONICE /bin/busybox mount -o remount,rw /flash
if [ ! -f "$storage_loop_file" ]; then
echo "Creating storage loopback file: $storage_loop_file..."
STORAGE_USE=$(/bin/busybox df /flash/ | awk '/[0-9]%/{print $4}')
STORAGE_USE=$(($STORAGE_USE / 1024 - $LIVE_FLASH_FREE_MIN))
options="${disk#*,}"
if [ "$options" = "$disk" ]; then
echo "No size specified, using all available space..."
if [ $STORAGE_USE -gt 0 ]; then
echo "Size obtain: $STORAGE_USE MB..."
else
error "size check" "Not enough free space (at least $LIVE_FLASH_FREE_MIN MB)..."
fi
else
if [ $options -le $STORAGE_USE ]; then
STORAGE_USE=$options
echo "Size specified: $STORAGE_USE MB..."
else
echo "Incorrect specified size: $options MB > $STORAGE_USE MB..."
if [ $STORAGE_USE -gt 0 ]; then
echo "Size trimmed: $STORAGE_USE MB..."
else
error "size check" "Not enough free space (at least $LIVE_FLASH_FREE_MIN MB)..."
fi
fi
fi
if [ -f "/flash/$IMAGE_SYSTEM" ]; then
# /flash is filesystem with system image file
# use dd and mkfs.ext4 from system
mount_part "/flash/$IMAGE_SYSTEM" "/sysroot" "ro,loop"
echo "Creating empty file..."
/sysroot/bin/busybox dd if=/dev/zero of="$storage_loop_file" bs=1M count=$STORAGE_USE &>/dev/null
echo "Formating to EXT4 filesystem..."
LD_LIBRARY_PATH=/sysroot/usr/lib /sysroot/usr/bin/mkfs.ext4 -F -L StorageLive "$storage_loop_file" &>/dev/null
/bin/busybox sync
umount /sysroot
else
# /flash is actual root filesystem
echo "Creating empty file..."
/flash/bin/busybox dd if=/dev/zero of="$storage_loop_file" bs=1M count=$STORAGE_USE &>/dev/null
echo "Formating to EXT4 filesystem..."
LD_LIBRARY_PATH=/flash/usr/lib /flash/usr/bin/mkfs.ext4 -F -L StorageLive "$storage_loop_file" &>/dev/null
/bin/busybox sync
fi
echo "Done..."
/bin/busybox usleep 2000000
fi
mount_part "FILE=$storage_loop_file" "/storage" "loop,rw,noatime"
return
fi
if [ -n "$OVERLAY" ]; then
OVERLAY_DIR=`cat /sys/class/net/eth0/address | /bin/busybox tr -d :`
@ -480,7 +546,7 @@
/bin/busybox rm "$UPDATE_DIR/$UPDATE_SYSTEM"
echo "md5 check failed. normal startup in 30s..."
/bin/busybox sync
/bin/busybox usleep 30000000
/bin/busybox usleep 30000000
fi
/bin/busybox rm "$UPDATE_DIR/${UPDATE_KERNEL}.md5" &>/dev/null
/bin/busybox rm "$UPDATE_DIR/${UPDATE_SYSTEM}.md5" &>/dev/null
@ -496,7 +562,8 @@
fi
if test "$REBOOT" -eq "1"; then
echo "System reboots now..." && \
echo "System reboots now..."
/bin/busybox usleep 2000000
/bin/busybox reboot
fi
}
@ -526,6 +593,10 @@
[ -f "/sysroot/sbin/init" ] || error "final_check" "Could not find system."
}
if [ "${boot%%=*}" = "FILE" ]; then
error "check arguments" "boot argument can't be FILE type..."
fi
# main boot sequence
for BOOT_STEP in \
load_modules \