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Diffstat (limited to 'sh.Linux/init.sh')
| -rwxr-xr-x | sh.Linux/init.sh | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/sh.Linux/init.sh b/sh.Linux/init.sh new file mode 100755 index 00000000..fc19bddb --- /dev/null +++ b/sh.Linux/init.sh @@ -0,0 +1,251 @@ +#!/bin/sh +# Copyright 1999-2007 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 + +# void single_user() +# +# Drop to a shell, remount / ro, and then reboot +# +single_user() { + if [ "${RC_SYS}" = "VPS" ] ; then + einfo "Halting" + halt -f + return + fi + + sulogin ${CONSOLE} + einfo "Unmounting filesystems" + if [ -c /dev/null ] ; then + mount -a -o remount,ro 2>/dev/null + else + mount -a -o remount,ro + fi + einfo "Rebooting" + reboot -f +} + +# This basically mounts $svcdir as a ramdisk, but preserving its content +# which allows us to run depscan.sh +# The tricky part is finding something our kernel supports +# tmpfs and ramfs are easy, so force one or the other +mount_svcdir() { + local fs= fsopts="-o rw,noexec,nodev,nosuid" devdir="none" devtmp="none" x= + local svcsize=${svcsize:-1024} + local mntcmd=$(fstabinfo --mount-cmd "${RC_LIBDIR}") + + if grep -Eq "[[:space:]]+tmpfs$" /proc/filesystems ; then + fs="tmpfs" + fsopts="${fsopts},mode=0755,size=${svcsize}k" + elif grep -Eq "[[:space:]]+ramfs$" /proc/filesystems ; then + fs="ramfs" + fsopts="${fsopts},mode=0755,size=${svcsize}k" + elif [ -e /dev/ram0 -a -e /dev/ram1 ] \ + && grep -Eq "[[:space:]]+ext2$" /proc/filesystems ; then + devdir="/dev/ram0" + devtmp="/dev/ram1" + fs="ext2" + for x in ${devdir} ${devtmp} ; do + try dd if=/dev/zero of="${x}" bs=1k count="${svcsize}" + try mkfs -t "${fs}" -i 1024 -vm0 "${x}" "${svcsize}" + done + else + echo + eerror "Gentoo Linux requires tmpfs, ramfs or 2 ramdisks + ext2" + eerror "compiled into the kernel" + echo + single_user + fi + + # If we have no entry in fstab for $svcdir, provide our own + if [ -z "${mntcmd}" ] ; then + mntcmd="-t ${fs} ${fsopts} ${devdir} ${RC_SVCDIR}" + fi + + local dotmp=false + if [ -e "${RC_SVCDIR}"/deptree ] ; then + dotmp=true + try mount -n -t "${fs}" -o rw "${devtmp}" "${RC_LIBDIR}"/tmp + cp -p "${RC_SVCDIR}"/deptree "${RC_SVCDIR}"/nettree \ + "${RC_LIBDIR}"/tmp 2>/dev/null + fi + try mount -n ${mntcmd} + if ${dotmp} ; then + cp -p "${RC_LIBDIR}"/tmp/deptree "${RC_LIBDIR}"/tmp/nettree \ + "${RC_SVCDIR}" 2>/dev/null + try umount -n "${RC_LIBDIR}"/tmp + fi +} + +_RC_GET_KV_CACHE="" +get_KV() { + [ -z "${_RC_GET_KV_CACHE}" ] \ + && _RC_GET_KV_CACHE="$(uname -r)" + + echo "$(KV_to_int "${_RC_GET_KV_CACHE}")" + + return $? +} + +# Try and set a font as early as we can +ttydev=${CONSOLE:-/dev/tty1} +if [ -c "${ttydev}" ] ; then + ttydev="-C ${ttydev}" +else + [ -c /dev/vc/1 ] && ttydev="-C /dev/vc/1" || ttydev= +fi +[ -r "${RC_LIBDIR}"/console/font ] \ + && /bin/setfont ${ttydev} "${RC_LIBDIR}"/console/font +[ -r "${RC_LIBDIR}"/console/map ] \ + && /bin/setfont ${ttydev} -m "${RC_LIBDIR}"/console/map +[ -r "${RC_LIBDIR}"/console/unimap ] \ + && /bin/setfont ${ttydev} -u "${RC_LIBDIR}"/console/unimap +unset ttydev + +. /etc/init.d/functions.sh +. "${RC_LIBDIR}"/sh/init-functions.sh +. "${RC_LIBDIR}"/sh/rc-functions.sh + +# Set the console loglevel to 1 for a cleaner boot +# the logger should anyhow dump the ring-0 buffer at start to the +# logs, and that with dmesg can be used to check for problems +${RC_DMESG_LEVEL+/bin/dmesg -n ${RC_DMESG_LEVEL}} + +check_statedir /proc + +# By default VServer already has /proc mounted, but OpenVZ does not! +if [ ! -e /proc/self/stat ] ; then + procfs="proc" + [ "${RC_UNAME}" = "GNU/kFreeBSD" ] && proc="linprocfs" + ebegin "Mounting ${procfs} at /proc" + mntcmd="$(fstabinfo --mount-cmd /proc)" + try mount -n ${mntcmd:--t ${procfs} -o noexec,nosuid,nodev proc /proc} + eend $? +fi + +# Read off the kernel commandline to see if there's any special settings +# especially check to see if we need to set the CDBOOT environment variable +# Note: /proc MUST be mounted +if [ -r /sbin/livecd-functions.sh ] ; then + . /sbin/livecd-functions.sh + livecd_read_commandline +fi + +[ "$(KV_to_int "$(uname -r)")" -ge "$(KV_to_int "2.6.0")" ] +K26=$? + +if [ "${RC_UNAME}" != "GNU/kFreeBSD" -a "${RC_NAME}" != "VPS" -a "${K26}" = "0" ] ; then + if [ -d /sys ] ; then + ebegin "Mounting sysfs at /sys" + mntcmd="$(fstabinfo --mount-cmd /sys)" + try mount -n ${mntcmd:--t sysfs -o noexec,nosuid,nodev sysfs /sys} + eend $? + else + ewarn "No /sys to mount sysfs needed in 2.6 and later kernels!" + fi +fi + +check_statedir /dev + +devfs_mounted= +if [ -e /dev/.devfsd ] ; then + # make sure devfs is actually mounted and it isnt a bogus file + devfs_mounted=$(mountinfo --fstype-regex devfs) +fi + +# Try to figure out how the user wants /dev handled +# - check $RC_DEVICES from /etc/conf.d/rc +# - check boot parameters +# - make sure the required binaries exist +# - make sure the kernel has support +if [ "${RC_DEVICES}" = "static" -o "${RC_SYS}" = "VPS" ] ; then + ebegin "Using existing device nodes in /dev" + eend 0 +elif [ "${RC_UNAME}" = "GNU/kFreeBSD" ] ; then + ebegin "Using kFreeBSD devfs in /dev" + eend 0 +else + fellback_to_devfs="no" + case "${RC_DEVICES}" in + devfs) devfs="yes" + udev="no" + ;; + udev) devfs="yes" + udev="yes" + fellback_to_devfs="yes" + ;; + auto|*) devfs="yes" + udev="yes" + ;; + esac + + # Check udev prerequisites and kernel params + if [ "${udev}" = "yes" ] ; then + if get_bootparam "noudev" || ! has_addon udev-start || \ + [ -n "${devfs_mounted}" -o "${K26}" != 0 ] ; then + udev="no" + fi + fi + + # Check devfs prerequisites and kernel params + if [ "${devfs}" = "yes" ] ; then + if get_bootparam "nodevfs" || ! has_addon devfs-start || + [ "${udev}" = "yes" -o ! -r /proc/filesystems ] ; then + devfs="no" + elif ! grep -Eq "[[:space:]]+devfs$" /proc/filesystems ; then + devfs="no" + fi + fi + + # Actually start setting up /dev now + if [ "${udev}" = "yes" ] ; then + start_addon udev + + # With devfs, /dev can be mounted by the kernel ... + elif [ "${devfs}" = "yes" ] ; then + start_addon devfs + + # Did the user want udev in the config file but for + # some reason, udev support didnt work out ? + if [ "${fellback_to_devfs}" = "yes" ] ; then + ewarn "You wanted udev but support for it was not available!" + ewarn "Please review your system after it's booted!" + fi + fi + + # OK, if we got here, things are probably not right :) + if [ "${devfs}" = "no" -a "${udev}" = "no" ] ; then + : + fi +fi + +# From linux-2.6 we need to mount /dev/pts again ... +if [ "${RC_UNAME}" != "GNU/kFreeBSD" -a "${K26}" = "0" ] ; then + if grep -Eq "[[:space:]]+devpts$" /proc/filesystems && \ + ! mountinfo /dev/pts > /dev/null ; then + if [ ! -d /dev/pts ] && \ + [ "${devfs}" = "yes" -o "${udev}" = "yes" ] ; then + # Make sure we have /dev/pts + mkdir -p /dev/pts >/dev/null 2>/dev/null || \ + ewarn "Could not create /dev/pts!" + fi + + if [ -d /dev/pts ] ; then + ebegin "Mounting devpts at /dev/pts" + mntcmd="$(fstabinfo --mount-cmd /dev/pts)" + try mount -n ${mntcmd:--t devpts -o gid=5,mode=0620,noexec,nosuid devpts /dev/pts} + eend $? + fi + fi +fi + +# If booting off CD, we want to update inittab before setting the runlevel +if [ -f /sbin/livecd-functions.sh -a -n "${CDBOOT}" ] ; then + ebegin "Updating inittab" + livecd_fix_inittab + eend $? + /sbin/telinit q &>/dev/null +fi + +. "${RC_LIBDIR}"/sh/init-common-post.sh + +# vim: set ts=4 : |