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Diffstat (limited to 'source/a/sysvinit-scripts/scripts/rc.S')
| -rw-r--r-- | source/a/sysvinit-scripts/scripts/rc.S | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/source/a/sysvinit-scripts/scripts/rc.S b/source/a/sysvinit-scripts/scripts/rc.S new file mode 100644 index 00000000..a0072d28 --- /dev/null +++ b/source/a/sysvinit-scripts/scripts/rc.S @@ -0,0 +1,382 @@ +#!/bin/sh +# +# /etc/rc.d/rc.S: System initialization script. +# +# Mostly written by: Patrick J. Volkerding, <volkerdi@slackware.com> +# + +PATH=/sbin:/usr/sbin:/bin:/usr/bin + +# Mount /proc right away: +/sbin/mount -v proc /proc -n -t proc + +# Mount sysfs next, if the kernel supports it: +if [ -d /sys ]; then + if grep -wq sysfs /proc/filesystems ; then + if ! grep -wq sysfs /proc/mounts ; then + /sbin/mount -v sysfs /sys -n -t sysfs + fi + fi +fi + +# Initialize udev to manage /dev entries and hotplugging for 2.6.x kernels. +# You may turn off udev by making the /etc/rc.d/rc.udev file non-executable +# or giving the "nohotplug" option at boot, but in the 2.6.x+ kernels udev +# has taken over the job of hotplug (finding hardware and loading the kernel +# modules for it, as well as creating device nodes in /dev). Realize that +# if you turn off udev that you will have to load all the kernel modules +# that you need yourself (possibly in /etc/rc.d/rc.modules, which does not +# promise to list all of them), and make any additional device nodes that you +# need in the /dev directory. Even USB and IEEE1394 devices will need to have +# the modules loaded by hand if udev is not used with a 2.6 kernel. So use it. :-) +if grep -wq sysfs /proc/mounts && grep -wq tmpfs /proc/filesystems ; then + if ! grep -wq nohotplug /proc/cmdline ; then + if [ -x /etc/rc.d/rc.udev ]; then + /bin/sh /etc/rc.d/rc.udev start + fi + fi +fi + +# Initialize the Logical Volume Manager. +# This won't start unless we find /etc/lvmtab (LVM1) or +# /etc/lvm/backup/ (LVM2). This is created by /sbin/vgscan, so to +# use LVM you must run /sbin/vgscan yourself the first time (and +# create some VGs and LVs). +if [ -r /etc/lvmtab -o -d /etc/lvm/backup ]; then + echo "Initializing LVM (Logical Volume Manager):" + # Check for device-mapper support. + if ! grep -wq device-mapper /proc/devices ; then + # Try to load a device-mapper kernel module: + /sbin/modprobe -q dm-mod + fi + # Scan for new volume groups: + /sbin/vgscan --mknodes --ignorelockingfailure 2> /dev/null + if [ $? = 0 ]; then + # Make volume groups available to the kernel. + # This should also make logical volumes available. + /sbin/vgchange -ay --ignorelockingfailure + fi +fi + +# Open any volumes created by cryptsetup: +if [ -f /etc/crypttab -a -x /sbin/cryptsetup.static ]; then + # First, check for device-mapper support. + if ! grep -wq device-mapper /proc/devices ; then + # If device-mapper exists as a module, try to load it. + # Try to load a device-mapper kernel module: + /sbin/modprobe -q dm-mod + fi + # NOTE: we only support LUKS formatted volumes (except for swap)! + cat /etc/crypttab | grep -v "^#" | grep -v "^$" | while read line; do + eval LUKSARRAY=( $line ) + LUKS="${LUKSARRAY[0]}" + DEV="${LUKSARRAY[1]}" + PASS="${LUKSARRAY[2]}" + OPTS="${LUKSARRAY[3]}" + LUKSOPTS="" + if echo $OPTS | grep -wq ro ; then LUKSOPTS="${LUKSOPTS} --readonly" ; fi + + # Skip LUKS volumes that were already unlocked (in the initrd): + /sbin/cryptsetup.static status $LUKS 1>/dev/null 2>/dev/null && continue + if /sbin/cryptsetup.static isLuks $DEV 2>/dev/null ; then + echo "Unlocking LUKS crypt volume '${LUKS}' on device '$DEV':" + if [ -n "${PASS}" ]; then + if [ -f ${PASS} ]; then + /sbin/cryptsetup.static ${LUKSOPTS} --key-file=${PASS} luksOpen $DEV $LUKS + elif [ "${PASS}" != "none" ]; then + # A password field of 'none' indicates a line for swap: + echo "${PASS}" | /sbin/cryptsetup.static ${LUKSOPTS} luksOpen $DEV $LUKS + fi + else + for i in seq 1 3 ; do + /sbin/cryptsetup.static ${LUKSOPTS} luksOpen $DEV $LUKS </dev/tty0 >/dev/tty0 2>&1 + [ $? -eq 0 ] && break + done + fi + elif echo $OPTS | grep -wq swap ; then + # If any of the volumes is to be used as encrypted swap, + # then encrypt it using a random key and run mkswap: + echo "Creating encrypted swap on device '$DEV' mapped to '${LUKS}':" + /sbin/cryptsetup.static --cipher=aes --key-file=/dev/urandom --key-size=256 create $LUKS $DEV + mkswap /dev/mapper/$LUKS + fi + done +fi + +# Enable swapping: +/sbin/swapon -a + +# Start FUSE, if requested: +if [ -x /etc/rc.d/rc.fuse ]; then + sh /etc/rc.d/rc.fuse start +fi + +# Set the system time from the hardware clock using hwclock --hctosys. +if [ -x /sbin/hwclock ]; then + # Check for a broken motherboard RTC clock (where ioports for rtc are + # unknown) to prevent hwclock causing a hang: + if ! grep -q -w rtc /proc/ioports ; then + CLOCK_OPT="--directisa" + fi + if grep -wq "^UTC" /etc/hardwareclock ; then + echo "Setting system time from the hardware clock (UTC)." + /sbin/hwclock $CLOCK_OPT --utc --hctosys + else + echo "Setting system time from the hardware clock (localtime)." + /sbin/hwclock $CLOCK_OPT --localtime --hctosys + fi +fi + +# Test to see if the root partition is read-only, like it ought to be. +READWRITE=no +if touch /fsrwtestfile 2>/dev/null; then + rm -f /fsrwtestfile + READWRITE=yes +else + echo "Testing root filesystem status: read-only filesystem" +fi + +# See if a forced filesystem check was requested at shutdown: +if [ -r /etc/forcefsck ]; then + FORCEFSCK="-f" +fi + +# Check the root filesystem: +if [ ! $READWRITE = yes ]; then + RETVAL=0 + if [ ! -r /etc/fastboot ]; then + echo "Checking root filesystem:" + /sbin/fsck $FORCEFSCK -C -a / + RETVAL=$? + fi + # An error code of 2 or higher will require a reboot. + if [ $RETVAL -ge 2 ]; then + # An error code equal to or greater than 4 means that some errors + # could not be corrected. This requires manual attention, so we + # offer a chance to try to fix the problem in single-user mode: + if [ $RETVAL -ge 4 ]; then + echo + echo "***********************************************************" + echo "*** An error occurred during the root filesystem check. ***" + echo "*** You will now be given a chance to log into the ***" + echo "*** system in single-user mode to fix the problem. ***" + echo "*** ***" + echo "*** If you are using the ext2 filesystem, running ***" + echo "*** 'e2fsck -v -y <partition>' might help. ***" + echo "***********************************************************" + echo + echo "Once you exit the single-user shell, the system will reboot." + echo + PS1="(Repair filesystem) \#"; export PS1 + sulogin + else # With an error code of 2 or 3, reboot the machine automatically: + echo + echo "***********************************" + echo "*** The filesystem was changed. ***" + echo "*** The system will now reboot. ***" + echo "***********************************" + echo + fi + echo "Unmounting file systems." + /sbin/umount -a -r + /sbin/mount -n -o remount,ro / + echo "Rebooting system." + sleep 2 + reboot -f + fi + # Remount the root filesystem in read-write mode + echo "Remounting root device with read-write enabled." + /sbin/mount -w -v -n -o remount / + if [ $? -gt 0 ] ; then + echo + echo "Attempt to remount root device as read-write failed! This is going to" + echo "cause serious problems." + echo + echo "If you're using the UMSDOS filesystem, you **MUST** mount the root partition" + echo "read-write! You can make sure the root filesystem is getting mounted " + echo "read-write with the 'rw' flag to Loadlin:" + echo + echo "loadlin vmlinuz root=/dev/hda1 rw (replace /dev/hda1 with your root device)" + echo + echo "Normal bootdisks can be made to mount a system read-write with the rdev command:" + echo + echo "rdev -R /dev/fd0 0" + echo + echo "You can also get into your system by using a boot disk with a command like this" + echo "on the LILO prompt line: (change the root partition name as needed)" + echo + echo "LILO: mount root=/dev/hda1 rw" + echo + echo "Please press ENTER to continue, then reboot and use one of the above methods to" + echo -n "get into your machine and start looking for the problem. " + read junk; + fi +else + echo "Testing root filesystem status: read-write filesystem" + echo + echo "*** ERROR: Root partition has already been mounted read-write. Cannot check!" + echo + echo "For filesystem checking to work properly, your system must initially mount" + echo "the root partition as read only. Please modify your kernel with 'rdev' so that" + echo "it does this. If you're booting with LILO, add a line:" + echo + echo " read-only" + echo + echo "to the Linux section in your /etc/lilo.conf and type 'lilo' to reinstall it." + echo + echo "If you boot from a kernel on a floppy disk, put it in the drive and type:" + echo " rdev -R /dev/fd0 1" + echo + echo "If you boot from a bootdisk, or with Loadlin, you can add the 'ro' flag." + echo + echo "This will fix the problem *AND* eliminate this annoying message. :^)" + echo + echo -n "Press ENTER to continue. " + read junk; +fi # Done checking root filesystem + +# Any /etc/mtab that exists here is old, so we delete it to start over: +/bin/rm -f /etc/mtab* +# Remounting the / partition will initialize the new /etc/mtab: +/sbin/mount -w -o remount / + +# Read in the correct / filesystem complete with arguments so mount will +# show them correctly. This does not stop those arguments from functioning +# but does prevent a small bug with /etc/mtab. +/bin/grep ' / ' /proc/mounts | grep -v "^rootfs" > /etc/mtab + +# Fix /etc/mtab to list sys and proc if they were not yet entered in +# /etc/mtab because / was still mounted read-only: +if [ -d /proc/sys ]; then + /sbin/mount -f proc /proc -t proc +fi +if [ -d /sys/bus ]; then + /sbin/mount -f sysfs /sys -t sysfs +fi + +# Configure ISA Plug-and-Play devices: +if [ -r /etc/isapnp.conf ]; then + if [ -x /sbin/isapnp ]; then + /sbin/isapnp /etc/isapnp.conf + fi +fi + +# This loads any kernel modules that are needed. These might be required to +# use your ethernet card, sound card, or other optional hardware. +# Priority is given first to a script named "rc.modules.local", then +# to "rc.modules-$FULL_KERNEL_VERSION", and finally to the plain "rc.modules". +# Note that if /etc/rc.d/rc.modules.local is found, then that will be the ONLY +# rc.modules script the machine will run, so make sure it has everything in +# it that you need. +if [ -x /etc/rc.d/rc.modules.local -a -r /proc/modules ]; then + echo "Running /etc/rc.d/rc.modules.local:" + /bin/sh /etc/rc.d/rc.modules.local +elif [ -x /etc/rc.d/rc.modules-$(uname -r) -a -r /proc/modules ]; then + echo "Running /etc/rc.d/rc.modules-$(uname -r):" + . /etc/rc.d/rc.modules-$(uname -r) +elif [ -x /etc/rc.d/rc.modules -a -r /proc/modules -a -L /etc/rc.d/rc.modules ]; then + echo "Running /etc/rc.d/rc.modules -> $(readlink /etc/rc.d/rc.modules):" + . /etc/rc.d/rc.modules +elif [ -x /etc/rc.d/rc.modules -a -r /proc/modules ]; then + echo "Running /etc/rc.d/rc.modules:" + . /etc/rc.d/rc.modules +fi + +# Configure runtime kernel parameters: +if [ -x /sbin/sysctl -a -r /etc/sysctl.conf ]; then + /sbin/sysctl -e -p /etc/sysctl.conf +fi + +# Check all the non-root filesystems: +if [ ! -r /etc/fastboot ]; then + echo "Checking non-root filesystems:" + /sbin/fsck $FORCEFSCK -C -R -A -a +fi + +# Mount usbfs: +if grep -wq usbfs /proc/filesystems; then + if ! grep -wq usbfs /proc/mounts ; then + if ! grep -wq usbfs /etc/fstab; then + /sbin/mount -v usbfs /proc/bus/usb -t usbfs + else + /sbin/mount -v /proc/bus/usb + fi + fi +fi + +# Mount non-root file systems in fstab, but not NFS or SMB +# because TCP/IP is not yet configured, and not proc or sysfs +# because those have already been mounted. Also check that +# devpts is not already mounted before attempting to mount +# it. With a 2.6.x or newer kernel udev mounts devpts. +# We also need to wait a little bit to let USB and other +# hotplugged devices settle (sorry to slow down the boot): +echo "Mounting non-root local filesystems:" +sleep 3 +if /bin/grep -wq devpts /proc/mounts ; then + /sbin/mount -a -v -t nonfs,nosmbfs,nocifs,noproc,nosysfs,nodevpts +else + /sbin/mount -a -v -t nonfs,nosmbfs,nocifs,noproc,nosysfs +fi + +# Enable swapping again. This is needed in case a swapfile is used, +# as it can't be enabled until the filesystem it resides on has been +# mounted read-write. +/sbin/swapon -a + +# Clean up some temporary files: +rm -f /var/run/* /var/run/*/* /var/run/*/*/* /etc/nologin \ + /etc/dhcpc/*.pid /etc/forcefsck /etc/fastboot \ + /var/state/saslauthd/saslauthd.pid \ + /tmp/.Xauth* 1> /dev/null 2> /dev/null + ( cd /var/log/setup/tmp && rm -rf * ) + ( cd /tmp && rm -rf kde-[a-zA-Z]* ksocket-[a-zA-Z]* hsperfdata_[a-zA-Z]* plugtmp* ) + +# Create /tmp/{.ICE-unix,.X11-unix} if they are not present: +if [ ! -e /tmp/.ICE-unix ]; then + mkdir -p /tmp/.ICE-unix + chmod 1777 /tmp/.ICE-unix +fi +if [ ! -e /tmp/.X11-unix ]; then + mkdir -p /tmp/.X11-unix + chmod 1777 /tmp/.X11-unix +fi + +# Create a fresh utmp file: +touch /var/run/utmp +chown root:utmp /var/run/utmp +chmod 664 /var/run/utmp + +# Update the current kernel level in the /etc/motd (Message Of The Day) file, +# if the first line of that file begins with the word 'Linux'. +# You are free to modify the rest of the file as you see fit. +if [ -x /bin/sed ]; then + /bin/sed -i "{1s/^Linux.*/$(/bin/uname -sr)\./}" /etc/motd +fi + +# If there are SystemV init scripts for this runlevel, run them. +if [ -x /etc/rc.d/rc.sysvinit ]; then + . /etc/rc.d/rc.sysvinit +fi + +# Run serial port setup script: +# CAREFUL! This can make some systems hang if the rc.serial script isn't +# set up correctly. If this happens, you may have to edit the file from a +# boot disk, and/or set it as non-executable: +if [ -x /etc/rc.d/rc.serial ]; then + sh /etc/rc.d/rc.serial start +fi + +# Carry an entropy pool between reboots to improve randomness. +if [ -f /etc/random-seed ]; then + echo "Using /etc/random-seed to initialize /dev/urandom." + cat /etc/random-seed > /dev/urandom +fi +# Use the pool size from /proc, or 512 bytes: +if [ -r /proc/sys/kernel/random/poolsize ]; then + dd if=/dev/urandom of=/etc/random-seed count=1 bs=$(cat /proc/sys/kernel/random/poolsize) 2> /dev/null +else + dd if=/dev/urandom of=/etc/random-seed count=1 bs=512 2> /dev/null +fi +chmod 600 /etc/random-seed + |