diff options
Diffstat (limited to 'yocto-poky/meta/recipes-core/initrdscripts/files/init-live.sh')
| -rw-r--r-- | yocto-poky/meta/recipes-core/initrdscripts/files/init-live.sh | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/yocto-poky/meta/recipes-core/initrdscripts/files/init-live.sh b/yocto-poky/meta/recipes-core/initrdscripts/files/init-live.sh deleted file mode 100644 index 09fb47991..000000000 --- a/yocto-poky/meta/recipes-core/initrdscripts/files/init-live.sh +++ /dev/null @@ -1,230 +0,0 @@ -#!/bin/sh - -PATH=/sbin:/bin:/usr/sbin:/usr/bin - -ROOT_MOUNT="/rootfs" -ROOT_IMAGE="rootfs.img" -MOUNT="/bin/mount" -UMOUNT="/bin/umount" -ISOLINUX="" - -ROOT_DISK="" - -# Copied from initramfs-framework. The core of this script probably should be -# turned into initramfs-framework modules to reduce duplication. -udev_daemon() { - OPTIONS="/sbin/udev/udevd /sbin/udevd /lib/udev/udevd /lib/systemd/systemd-udevd" - - for o in $OPTIONS; do - if [ -x "$o" ]; then - echo $o - return 0 - fi - done - - return 1 -} - -_UDEV_DAEMON=`udev_daemon` - -early_setup() { - mkdir -p /proc - mkdir -p /sys - mount -t proc proc /proc - mount -t sysfs sysfs /sys - mount -t devtmpfs none /dev - - # support modular kernel - modprobe isofs 2> /dev/null - - mkdir -p /run - mkdir -p /var/run - - $_UDEV_DAEMON --daemon - udevadm trigger --action=add -} - -read_args() { - [ -z "$CMDLINE" ] && CMDLINE=`cat /proc/cmdline` - for arg in $CMDLINE; do - optarg=`expr "x$arg" : 'x[^=]*=\(.*\)'` - case $arg in - root=*) - ROOT_DEVICE=$optarg ;; - rootimage=*) - ROOT_IMAGE=$optarg ;; - rootfstype=*) - modprobe $optarg 2> /dev/null ;; - LABEL=*) - label=$optarg ;; - video=*) - video_mode=$arg ;; - vga=*) - vga_mode=$arg ;; - console=*) - if [ -z "${console_params}" ]; then - console_params=$arg - else - console_params="$console_params $arg" - fi ;; - debugshell*) - if [ -z "$optarg" ]; then - shelltimeout=30 - else - shelltimeout=$optarg - fi - esac - done -} - -boot_live_root() { - # Watches the udev event queue, and exits if all current events are handled - udevadm settle --timeout=3 --quiet - killall "${_UDEV_DAEMON##*/}" 2>/dev/null - - # Allow for identification of the real root even after boot - mkdir -p ${ROOT_MOUNT}/media/realroot - mount -n --move "/run/media/${ROOT_DISK}" ${ROOT_MOUNT}/media/realroot - - # Move the mount points of some filesystems over to - # the corresponding directories under the real root filesystem. - for dir in `awk '/\/dev.* \/run\/media/{print $2}' /proc/mounts`; do - mkdir -p ${ROOT_MOUNT}/media/${dir##*/} - mount -n --move $dir ${ROOT_MOUNT}/media/${dir##*/} - done - mount -n --move /proc ${ROOT_MOUNT}/proc - mount -n --move /sys ${ROOT_MOUNT}/sys - mount -n --move /dev ${ROOT_MOUNT}/dev - - cd $ROOT_MOUNT - - # busybox switch_root supports -c option - exec switch_root -c /dev/console $ROOT_MOUNT /sbin/init $CMDLINE || - fatal "Couldn't switch_root, dropping to shell" -} - -fatal() { - echo $1 >$CONSOLE - echo >$CONSOLE - exec sh -} - -early_setup - -[ -z "$CONSOLE" ] && CONSOLE="/dev/console" - -read_args - -echo "Waiting for removable media..." -C=0 -while true -do - for i in `ls /run/media 2>/dev/null`; do - if [ -f /run/media/$i/$ROOT_IMAGE ] ; then - found="yes" - ROOT_DISK="$i" - break - elif [ -f /run/media/$i/isolinux/$ROOT_IMAGE ]; then - found="yes" - ISOLINUX="isolinux" - ROOT_DISK="$i" - break - fi - done - if [ "$found" = "yes" ]; then - break; - fi - # don't wait for more than $shelltimeout seconds, if it's set - if [ -n "$shelltimeout" ]; then - echo -n " " $(( $shelltimeout - $C )) - if [ $C -ge $shelltimeout ]; then - echo "..." - echo "Mounted filesystems" - mount | grep media - echo "Available block devices" - cat /proc/partitions - fatal "Cannot find $ROOT_IMAGE file in /run/media/* , dropping to a shell " - fi - C=$(( C + 1 )) - fi - sleep 1 -done - -# Try to mount the root image read-write and then boot it up. -# This function distinguishes between a read-only image and a read-write image. -# In the former case (typically an iso), it tries to make a union mount if possible. -# In the latter case, the root image could be mounted and then directly booted up. -mount_and_boot() { - mkdir $ROOT_MOUNT - mknod /dev/loop0 b 7 0 2>/dev/null - - if ! mount -o rw,loop,noatime,nodiratime /run/media/$ROOT_DISK/$ISOLINUX/$ROOT_IMAGE $ROOT_MOUNT ; then - fatal "Could not mount rootfs image" - fi - - if touch $ROOT_MOUNT/bin 2>/dev/null; then - # The root image is read-write, directly boot it up. - boot_live_root - fi - - # determine which unification filesystem to use - union_fs_type="" - if grep -q -w "overlay" /proc/filesystems; then - union_fs_type="overlay" - elif grep -q -w "aufs" /proc/filesystems; then - union_fs_type="aufs" - else - union_fs_type="" - fi - - # make a union mount if possible - case $union_fs_type in - "overlay") - mkdir -p /rootfs.ro /rootfs.rw - if ! mount -n --move $ROOT_MOUNT /rootfs.ro; then - rm -rf /rootfs.ro /rootfs.rw - fatal "Could not move rootfs mount point" - else - mount -t tmpfs -o rw,noatime,mode=755 tmpfs /rootfs.rw - mkdir -p /rootfs.rw/upperdir /rootfs.rw/work - mount -t overlay overlay -o "lowerdir=/rootfs.ro,upperdir=/rootfs.rw/upperdir,workdir=/rootfs.rw/work" $ROOT_MOUNT - mkdir -p $ROOT_MOUNT/rootfs.ro $ROOT_MOUNT/rootfs.rw - mount --move /rootfs.ro $ROOT_MOUNT/rootfs.ro - mount --move /rootfs.rw $ROOT_MOUNT/rootfs.rw - fi - ;; - "aufs") - mkdir -p /rootfs.ro /rootfs.rw - if ! mount -n --move $ROOT_MOUNT /rootfs.ro; then - rm -rf /rootfs.ro /rootfs.rw - fatal "Could not move rootfs mount point" - else - mount -t tmpfs -o rw,noatime,mode=755 tmpfs /rootfs.rw - mount -t aufs -o "dirs=/rootfs.rw=rw:/rootfs.ro=ro" aufs $ROOT_MOUNT - mkdir -p $ROOT_MOUNT/rootfs.ro $ROOT_MOUNT/rootfs.rw - mount --move /rootfs.ro $ROOT_MOUNT/rootfs.ro - mount --move /rootfs.rw $ROOT_MOUNT/rootfs.rw - fi - ;; - "") - mount -t tmpfs -o rw,noatime,mode=755 tmpfs $ROOT_MOUNT/media - ;; - esac - - # boot the image - boot_live_root -} - -if [ "$label" != "boot" -a -f $label.sh ] ; then - if [ -f /run/media/$i/$ISOLINUX/$ROOT_IMAGE ] ; then - ./$label.sh $i/$ISOLINUX $ROOT_IMAGE $video_mode $vga_mode $console_params - else - fatal "Could not find $label script" - fi - - # If we're getting here, we failed... - fatal "Target $label failed" -fi - -mount_and_boot - |