diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init | 91 |
1 files changed, 55 insertions, 36 deletions
@@ -11,9 +11,8 @@ msg ":: Loading Initramfs" read CMDLINE </proc/cmdline export CMDLINE -# Used so hooks can override params to kinit -export kinit_params="" export root="" +export init="" echo "/sbin/modprobe" > /proc/sys/kernel/modprobe # if available, start udevd at this stage @@ -31,8 +30,6 @@ for cmd in ${CMDLINE}; do [0123456Ss]) ;; [0-9]*) ;; single) ;; - #Allow "init=X" to pass-through - init=*) kinit_params="${kinit_params} ${cmd}" ;; # only export stuff that does work with dash :) *=*) cmd="$(replace -s= "${cmd}" '.' '_')" cmd="$(replace -s= "${cmd}" '-' '_')" @@ -77,8 +74,6 @@ done if [ -z "${rootdelay}" ] || ! [ "${rootdelay}" -ge 0 ]; then export rootdelay=10 fi -# We'll wait for the root device, so make sure klibc doesn't -export kinit_params="${kinit_params} rootdelay=0" if [ -e "/hooks" ]; then for h in ${HOOKS}; do @@ -100,38 +95,9 @@ if [ "${break}" = "y" ]; then PS1="ramfs$ " /bin/sh -i fi -# If we boot from NFS, don't check for a block device in /dev -# Let kinit do it all -if [ -z "${nfsroot}" -a "${root}" != "/dev/nfs" ]; then - if ! poll_device "${root}" ${rootdelay}; then - msg "\nRoot device '${root}' doesn't exist, attempting to create it" - - eval $(/bin/parseblock "${root}") - if [ -z "${BLOCKDEVICE}" ]; then - echo "ERROR: Failed to parse block device ids for '${root}'" - else - echo "/bin/mknod /dev/root b ${BLOCKDEVICE}" - /bin/mknod /dev/root b ${BLOCKDEVICE} >/dev/null - export root="/dev/root" - fi - if [ ! -b "${root}" -a ! -h "${root}" ]; then - err "Unable to detect or create root device '${root}'" - echo "You are being dropped to a recovery shell" - echo " Type 'reboot' to reboot" - echo " Type 'exit' to try and continue booting" - echo "" - echo "If the device '${root}' gets created while you are here," - echo "try adding 'rootdelay=10' or higher to the kernel command-line" - PS1="ramfs$ " /bin/sh -i - msg "Trying to continue (this will most likely fail)..." - fi - fi -fi - if [ -f "/message" ]; then msg "$(cat /message)" fi -msg ":: Initramfs Completed - control passing to kinit" #Special handling if udev is running udevpid=$(/bin/minips -C udevd -o pid=) @@ -140,4 +106,57 @@ if [ -n "${udevpid}" ]; then /bin/sleep 0.01 fi -exec /bin/kinit "$@" -- "root=${root}" ${kinit_params} > /dev/null 2>&1 +mkdir -p /new_root +if [ -z "${nfsroot}" -a "${root}" != "/dev/nfs" ]; then + if [ ${root:0:5} != "/dev/" ] || ! poll_device "${root}" ${rootdelay}; then + msg "\nRoot device '${root}' doesn't exist. Attempting to create it." + rootdev="" + if [ ${root:0:5} = "/dev/" ]; then + # It might be a block device (/dev/sda) + if [ -f /sys/block/${root:5}/dev ]; then + rootdev="$(cat /sys/block/${root:5}/dev | sed 's|:| |')" + # It might be a partition on any block device (/dev/sda1) + else + for dir in /sys/block/*; do + if [ -f ${dir}/${root:5}/dev ]; then + rootdev="$(cat /sys/block/${dir}/${root:5}/dev | sed 's|:| |')" + break + fi + done + fi + # It might be a major/minor pair (8:1) + elif echo ${root} | grep -q :; then + rootdev="$(echo ${root} | sed 's|:| |')" + root="/dev/root" + # It might be major/minor encoded as a single hex-number (lilo-style) (801) + elif [ ${#root} -le 4 -a ${#root} -gt 2 ] && echo "${root}" | grep -qe '^[A-Fa-f0-9]*$'; then + str_offset=$((${#root}-2)) + major=$(printf "%d" 0x${root:0:${str_offset}}) + minor=$(printf "%d" 0x${root:${str_offset}}) + rootdev="${major} ${minor}" + root="/dev/root" + fi + if [ -n "${rootdev}" ]; then + msg "Creating root device ${root} with major $(echo "${rootdev}" | cut -d\ -f1) and minor $(echo "${rootdev}" | cut -d\ -f2)." + mknod ${root} b ${rootdev} + else + err "Unable to determine major/minor number of root device '${root}'." + echo "You are being dropped to a recovery shell" + echo " Type 'reboot' to reboot" + echo " Type 'exit' to try and continue booting" + PS1="ramfs$ " /bin/sh -i + msg "Trying to continue (this will most likely fail) ..." + fi + fi + # We didn't build filesystem support into busybox, + # instead we use util-linux-ng's blkid for best compatibility + fstype=$(eval $(/sbin/blkid -o udev -p "${root}"); echo $ID_FS_TYPE) + mount ${fstype:+-t ${fstype}} -o ro "${root}" /new_root +else + # TODO: Actually implement this + err "Mounting NFS root is not implemented yet." +fi +umount /proc +umount /sys +[ -z "${init}" ] && init="/sbin/init" +exec /sbin/switch_root -c /dev/console /new_root ${init} "$@" |