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Diffstat (limited to 'recipes/slugos-init/files/turnup')
| -rw-r--r-- | recipes/slugos-init/files/turnup | 965 |
1 files changed, 965 insertions, 0 deletions
diff --git a/recipes/slugos-init/files/turnup b/recipes/slugos-init/files/turnup new file mode 100644 index 0000000000..118a57d808 --- /dev/null +++ b/recipes/slugos-init/files/turnup @@ -0,0 +1,965 @@ +#!/bin/sh +# turnup +# See the help block at the end for documentation. +# +. /etc/default/functions + +# +# configuration +# The following variables control which directories in /var end +# up on the rootfs and which end up in a temporary file system. +INRAM_MEMSTICK="\ +### SlugOS from-memory-stick boot. +d root root 0755 /var/backups none +d root root 0755 /var/volatile/cache none +l root root 0755 /var/cache /var/volatile/cache +d root root 0755 /var/lib none +d root root 2755 /var/local none +d root root 1777 /var/volatile/lock none +l root root 1777 /var/lock /var/volatile/lock +d root root 0755 /var/volatile/log none +l root root 0755 /var/log /var/volatile/log +d root root 0755 /var/volatile/run none +l root root 0755 /var/run /var/volatile/run +d root root 0755 /var/spool none +d root root 1777 /var/volatile/tmp none +l root root 1777 /var/tmp /var/volatile/tmp +d root root 0755 /var/lock/subsys none +d root root 0755 /var/lib/dropbear none +d root root 0755 /var/lib/misc none +f root root 0664 /var/log/wtmp none +f root root 0664 /var/log/lastlog none +f root root 0664 /var/run/utmp none" + +INRAM_NFS="\ +### SlugOS from-NFS boot. +d root root 0755 /var/backups none +d root root 0755 /var/volatile/cache none +l root root 0755 /var/cache /var/volatile/cache +d root root 0755 /var/lib none +d root root 2755 /var/local none +d root root 1777 /var/volatile/lock none +l root root 1777 /var/lock /var/volatile/lock +d root root 0755 /var/log none +d root root 0755 /var/volatile/run none +l root root 0755 /var/run /var/volatile/run +d root root 0755 /var/spool none +d root root 1777 /var/volatile/tmp none +l root root 1777 /var/tmp /var/volatile/tmp +d root root 0755 /var/lock/subsys none +d root root 0755 /var/lib/dropbear none +d root root 0755 /var/lib/misc none +d root root 0755 /var/lib/opkg none +f root root 0664 /var/log/wtmp none +f root root 0664 /var/log/lastlog none +f root root 0664 /var/run/utmp none" + +INRAM_DISK="\ +### SlugOS from-disk boot. +d root root 0755 /var/backups none +d root root 0755 /var/cache none +d root root 0755 /var/lib none +d root root 2755 /var/local none +d root root 1777 /var/lock none +d root root 0755 /var/log none +d root root 0755 /var/run none +d root root 0755 /var/spool none +d root root 1777 /var/tmp none +d root root 0755 /var/lock/subsys none +d root root 0755 /var/lib/dropbear none +d root root 0755 /var/lib/misc none +d root root 0755 /var/lib/opkg none +f root root 0664 /var/log/wtmp none +f root root 0664 /var/log/lastlog none +f root root 0664 /var/run/utmp none" + +INRAM_HEADER="\ +# This configuration file lists filesystem objects that should get verified +# during startup and be created if missing. +# +# Every line must either be a comment starting with # +# or a definition of format: +# <type> <owner> <group> <mode> <path> <linksource> +# where the items are separated by whitespace ! +# +# <type> : d|f|l : (d)irectory|(f)ile|(l)ink +# +# A linking example: +# l root root 0777 /var/test /tmp/testfile +# f root root 0644 /var/test none +# +# Understanding links: +# When populate-volatile is to verify/create a directory or file, it will first +# check it's existence. If a link is found to exist in the place of the target, +# the path of the target is replaced with the target the link points to. +# Thus, if a link is in the place to be verified, the object will be created +# in the place the link points to instead. +# This explains the order of \"link before object\" as in the example above, where +# a link will be created at /var/test pointing to /tmp/testfile and due to this +# link the file defined as /var/test will actually be created as /tmp/testfile. +#" + +# +# force: override certain checks +force= + +# +# pfile: the uuid/partition file +pfile=/etc/uuid_by_partition + +# +# fstype new +# The type of the file system mounted on "new" Outputs the last +# piece of information found, which should be the one for the +# currently visible mount! +fstype() { + local cwd dev mp type options pass freq result + cwd="$(cd "$1"; /bin/pwd)" + result= + while read dev mp type options pass freq + do + case "$mp" in + "$cwd") result="$type";; + esac + done </proc/mounts + echo "$result" +} + +# +# fsoptions arguments +# Collapses the mount (-o) options into a single list which is +# printed on stdout. Accepts an arbitrary list of options and +# just joins them together. +fsoptions() { + local options + options= + while test $# -gt 1 + do + case "$1" in + -t) shift;; + -o) if test -n "$2" + then + if test -n "$options" + then + options="$options,$2" + else + options="$2" + fi + fi + shift;; + esac + shift + done + if test -n "$options" + then + echo "$options" + else + echo defaults + fi +} + +# +# get_flash <directory> {mount options} +# mount the flash device, writeable, on the given directory +get_flash() { + local ffsdir ffspart ffsdev + + ffsdir="$1" + shift + test -n "$ffsdir" -a -d "$ffsdir" || { + echo "$0: $ffsdir: internal error, flash mount point not a directory" >&2 + return 1 + } + + case "$(machine)" in + nslu2) ffspart="Flashdisk";; + *) ffspart="filesystem";; + esac + ffsdev="$(mtblockdev $ffspart)" + [ -n "$ffsdev" ] || \ + ffsdev="$(mtblockdev rootfs)" + umountflash "$ffsdev" && + mountflash "$ffsdev" "$ffsdir" "$@" +} + +# +# check_rootfs [-i] <root fs directory> +# Make sure the candidate rootfs is empty +# Environment: rootdev=device or NFS root path +check_rootfs() { + local fcount + + case "$1" in + -i) shift + case "$force" in + -f) return 0;; + esac + + fcount="$(find "$1" ! -type d -print | wc -l)" + test "$fcount" -eq 0 && return 0 + + echo "turnup: $rootdev: partition contains existing files, specify -f to overwrite" >&2 + return 1;; + *) checkmount "$1" && return 0 + + echo "turnup: $rootdev: partition does not seem to be a valid root partition" >&2 + echo " The partition must contain a full operating system. To ensure that" >&2 + echo " this is the case it is checked for the following, all of which must" >&2 + echo " exist for the bootstrap to work:" >&2 + echo + echo " 1) A directory /mnt." >&2 + echo " 2) A command line interpreter program in /bin/sh." >&2 + echo " 3) The program chroot in /sbin or /usr/sbin." >&2 + echo " 4) The program init in /sbin, /etc or /bin." >&2 + echo + echo " One or more of these items is missing. Mount $rootdev on /mnt" >&2 + echo " and examine its contents. You can use turnup disk|nfs -i -f" >&2 + echo " to copy this operating system onto the disk, but it may overwrite" >&2 + echo " files on the disk." >&2 + return 1;; + esac +} + +# +# copy_rootfs old new +# Make a copy of the given root file system, copying only the +# directories needed. The root must be the flash file system +copy_rootfs() { + local old new + old="$1" + new="$2" + test -d "$old" -a -d "$new" || { + echo "turnup: rootfs: copy $old $new: not a directory" >&2 + return 1 + } + # + # There are no problem file names in the flash file system, so + # it is possible to use -print, not -print0. The following + # files and directories are not copied: + # + # /dev/* + # /boot, /boot/* + # /linuxrc* + # /var/* + echo "turnup: copying root file system" >&2 + ( cd "$1" + find . -xdev -print | + sed '\@^./dev/@d;\@^./boot/@d;\@^./boot$@d;\@^./linuxrc@d;\@^./var/@d' | + cpio -p -d -m -u "$2" + ) || { + echo "turnup: rootfs: cpio $old $new failed" >&2 + return 1 + } + echo "done" >&2 +} + +# +# setup_dev new device_table +# In flash file systems /dev is in ramfs, in disk systems /dev +# can be populated permanently. This is done by creating a +# single entry '.noram' in /dev - the devices init script will +# then populate the directory without overmounting it. The +# devices in the passed in device table are also created, but +# note that this is insufficient, /etc/init.d/devices must +# also run. +setup_dev() { + test -n "$1" -a -d "$1"/dev -a -r "$2" || { + echo "turnup: setup_dev($1,$2): expected a directory and a file" >&2 + return 1 + } + echo "turnup: initialising dev file system" >&2 + # init tries to open the following devices: + # /dev/console + # /dev/tty0 + # /dev/null + # syslog, and maybe other things, only work if fd 1 is valid, therefore + # we must create these devices here... + # (if makedevs is a symlink, it's the busybox version, different syntax) + if [ -h /sbin/makedevs ] + then + makedevs -d "$2" "$1" + else + makedevs --root="$1" --devtable="$2" + fi + :>"$1"/dev/.noram + return 0 +} + +# +# setup_bootdev new device_table +# As above but actually uses the supplied device table - this is possible if +# the table is just used for boot because the extra setup is not required. +setup_bootdev() { + test -n "$1" -a -d "$1"/dev -a -r "$2" || { + echo "turnup: setup_bootdev($1,$2): expected a directory and a file" >&2 + return 1 + } + # NOTE: this fails silently with 0 return code(!) when a directory + # does not exist yet things are created within it. + # (if makedevs is a symlink, it's the busybox version, different syntax) + if [ -h /sbin/makedevs ] + then + makedevs -d "$2" "$1" + else + makedevs -r "$1" -D "$2" + fi +} + +# +# setup_var new type +# Populates /var. +# Removes the /var tmpfs entry from /etc/fstab. +# Creates links from /var into /media/ram for NFS and Memstick. +setup_var() { + + test -n "$1" -a -d "$1"/var || { + echo "turnup: setup_var($1,$2): expected a directory" >&2 + return 1 + } + case "$2" in + disk|nfs|memstick);; + *) echo "turnup: setup_var($1,$2): expected 'disk', 'nfs' or 'memstick'" >&2 + return 1;; + esac + + # populate /var. We just need to create the /var/volatile mount + # point, the populate-volatile script does the work at boot time. + #QUIET: echo "turnup: ensuring /var/volatile mountpoint exists" >&2 + test -d "$1"/var/volatile || mkdir "$1"/var/volatile + + # we need to put in place the correct configuration file for + # the populate-volatile script to use at boot time. The config + # file is already in place for the flash boot, and it's the same + # file for the ram boot. + case "$2" in + disk) echo "$INRAM_HEADER" > "$1"/etc/default/volatiles/00_core + echo "$INRAM_DISK" >>"$1"/etc/default/volatiles/00_core;; + nfs) echo "$INRAM_HEADER" > "$1"/etc/default/volatiles/00_core + echo "$INRAM_NFS" >>"$1"/etc/default/volatiles/00_core;; + memstick) echo "$INRAM_HEADER" > "$1"/etc/default/volatiles/00_core + echo "$INRAM_MEMSTICK" >>"$1"/etc/default/volatiles/00_core;; + esac + + # remove the /var tmpfs entry from the new /etc/fstab, if it is + # present in the first place. + sed -i '\@[ ]/var[ ][ ]*tmpfs[ ]@d' "$1"/etc/fstab + #QUIET: echo "turnup: ensuring tmpfs will not be mounted on /var" >&2 + # + return 0 +} + +# +# setup_syslog new +# Moves the syslog to a file - appropriate for disk and nfs types, not +# otherwise. +setup_syslog() { + test -n "$1" -a -d "$1"/etc || { + echo "turnup: setup_syslog($1): expected a directory" >&2 + return 1 + } + # + # if the syslog is to the buffer redirect it to a file + if egrep -q '^DESTINATION="buffer"' "$1"/etc/syslog.conf + then + if cp "$1"/etc/syslog.conf "$1"/etc/syslog.conf.sav + then + # the busybox syslog will fail with ROTATESIZE and ROTATEGENS + sed -i 's!DESTINATION="buffer"!DESTINATION="file"! + /^ROTATESIZE=/d + /^ROTATEGENS=/d' "$1"/etc/syslog.conf + #QUIET: echo "turnup: /etc/syslog.conf: changed to file buffering" >&2 + #QUIET: echo " Old (buffer) version in /etc/syslog.conf.sav" >&2 + #QUIET: echo " Log messages will be in /var/log/messages" >&2 + else + echo "turnup: /etc/syslog.conf: failed to make a copy" >&2 + echo " syslog will log to a buffer" >&2 + fi + fi + return 0 +} + +# +# setup_rootfs type new device_table +# Populates the /dev and /var directories, alters the startup to +# not mount or populate them further. Does the right thing according +# to the given $type +setup_rootfs() { + local type new table + type="$1" + new="$2" + table="$3" + + test -n "$new" -a -d "$new" -a -f "$table" || { + echo "turnup: setup_rootfs($type,$new,$table): expected a directory and a file" >&2 + return 1 + } + + case "$type" in + flash) return 0;; + disk) setup_dev "$new" "$table" && + setup_var "$new" "$type" && + setup_syslog "$new";; + memstick) + setup_bootdev "$new" "$table" && + setup_var "$new" "$type" ;; + nfs) setup_dev "$new" "$table" && + setup_var "$new" "$type" && + setup_syslog "$new";; + *) echo "turnup: setup_rootfs: $type: unknown rootfs type" >&2 + return 1;; + esac + # return code of last setup function +} + +# +# setup_fstab new fsdev fstype fsoptions +# Alters the /etc/fstab entry for / to refer to the correct device and +# have the correct type and options. Essential for checkroot to remount +# / with the correct options. Writes the initial uuid file. +# bad, since sed won't fail even if it changes nothing. +setup_fstab() { + sed -i '\@^[^ ]*[ ][ ]*/[ ]@s@^.*$@'"$2 / $3 $4 1 1"'@' "$1"/etc/fstab + egrep -q "^$2 / $3 $4 1 1\$" "$1"/etc/fstab || { + echo "turnup: /etc/fstab: root(/) entry not changed" >&2 + echo " you probably need to check the options in /etc/fstab" >&2 + echo " to ensure that the root partition is mounted correctly" >&2 + return 1 + } + # + # build $pfile + uuid_by_partition >"$1""$pfile" || + echo "turnup: $pfile: blkid failed (ignored)" >&2 + return 0 +} + +# +# boot_rootfs <boot type> <flash file system> <sleep time> (<device> <uuid>|<nfsroot>) [options] +# Change the flash partition (not the current root!) to boot off +# the new root file system +boot_rootfs() { + local type ffs sleep device uuid opt + + type="$1" + ffs="$2" + sleep="$3" + device="$4" + uuid= + mduuid= + + # test this first as the test does not depend on the correctness + # of the other arguments + test -n "$ffs" -a -d "$ffs" || { + echo "turnup: boot_rootfs($type, $ffs, $device): expected directory" >&2 + return 1 + } + test -x "$ffs"/boot/"$type" || { + echo "turnup: boot_rootfs($type, $ffs, $device): invalid boot type $type" >&2 + return 1 + } + shift + shift + + case "$type" in + disk) test -n "$device" -a -b "$device" || { + echo "turnup: boot_rootfs($ffs, $type, $device): expected block device" >&2 + return 1 + } + uuid="$3" + if (echo "$device" | grep -q '^/dev/md') + then + # FIXME: should use awk to do the below extraction + mduuid=`mdadm --detail --brief "$device" | sed 's/^.*UUID=//'` + fi + shift 3;; + nfs) shift 2;; + flash) ;; + ram) ;; + *) echo "turnup: boot_rootfs($type, $ffs, $device): unknown type" >&2 + return 1;; + esac + + # + # The /linuxrc records the correct options to mount the device, + # since we have already mounted if correctly with these options + # we can be sure (maybe) that the boot will work. If not /boot/disk + # falls back to flash. + # + # This modifies the boot process, until this point no harm has been + # done to the system, but at this point the boot rootfs will change + rm -f "$ffs"/linuxrc.new || { + echo "turnup: boot_rootfs: failed to remove $ffs/linuxrc.new" >&2 + return 1 + } + case "$type" in + flash) ln -s "boot/flash" "$ffs"/linuxrc.new || { + echo "turnup: boot_rootfs: failed to create $ffs/linuxrc.new" >&2 + return 1 + };; + ram) { echo '#!/bin/sh' + echo 'mount -t proc proc /proc' + echo 'mount -t sysfs sysfs /sys' + echo 'leds beep' + echo 'rm -f /linuxrc.new' + echo 'ln -s boot/flash /linuxrc.new' + echo 'mv /linuxrc.new /linuxrc' + echo 'exec /boot/ram /dev/ram0' + echo 'exec /boot/flash' + } >"$ffs"/linuxrc.new && + chmod 744 "$ffs"/linuxrc.new || { + echo "turnup: boot_rootfs: failed to write $ffs/linuxrc.new" >&2 + return 1 + };; + *) { echo '#!/bin/sh' + echo 'mount -t proc proc /proc' + echo 'mount -t sysfs sysfs /sys' + echo 'leds beep' + test "$sleep" -gt 0 && echo -n "sleep='$sleep' " + test -n "$uuid" && echo -n "UUID='$uuid' " + test -n "$mduuid" && echo -n "MDUUID='$mduuid' " + echo -n "exec '/boot/$type' '$device'" + for opt in "$@" + do + echo -n " '$opt'" + done + echo + echo 'exec /boot/flash' + } >"$ffs"/linuxrc.new && + chmod 744 "$ffs"/linuxrc.new || { + echo "turnup: boot_rootfs: failed to write $ffs/linuxrc.new" >&2 + return 1 + };; + esac + rm -f "$ffs"/linuxrc.sav || { + echo "turnup: boot_rootfs: failed to remove $ffs/linuxrc.sav" >&2 + return 1 + } + ln "$ffs"/linuxrc "$ffs"/linuxrc.sav || { + echo "turnup: boot_rootfs: failed to save /linuxrc.sav" >&2 + return 1 + } + mv -f "$ffs"/linuxrc.new "$ffs"/linuxrc || { + echo "turnup: boot_rootfs: failed to install new /linuxrc" >&2 + return 1 + } + return 0 +} + +# +# disk [-m] [-i] [-s<time>] <device> {options} +# Carefully copy the flash file system to the named device. +disk() { + local setup_type sleep init device uuid new ffs fst fso + + setup_type=disk + sleep=10 + init= + while test $# -gt 0 + do + case "$1" in + -f) force="$1" + shift;; + -m) setup_type=memstick + shift;; + -i) init="$1" + shift;; + -s*) sleep="${1#-s}" + sleep="${sleep:-10}" + shift;; + *) break;; + esac + done + + device="$1" + test -n "$device" -a -b "$device" || { + echo "turnup disk: $device: block device required" >&2 + return 1 + } + shift + + # find the uuid if available + uuid="$(blkid -c /dev/null -s UUID -o value "$device")" + + # make temporary directories for the mount points + new="/tmp/rootfs.$$" + ffs="/tmp/flashdisk.$$" + mkdir "$new" "$ffs" || { + echo "turnup: disk: failed to create temporary directories" >&2 + return 1 + } + + # make sure we can get to the flash file system first + get_flash "$ffs" || { + rmdir "$new" "$ffs" + return 1 + } + + # Now mount the device with the given options, note that specifying + # read only is *not* an option, this is important because the boot/disk + # script needs a rw file system + status=1 + fst= + fso="$(fsoptions "$@")" + if if test -n "$uuid" + then + mount "$@" UUID="$uuid" "$new" + else + mount "$@" "$device" "$new" + fi + then + fst="$(fstype "$new")" + umount "$new" || + echo "turnup disk: $device($new): umount does not seem to work" >&2 + fi + + if test -n "$fst" && + if test -n "$uuid" + then + mount -t "$fst" -o "$fso" UUID="$uuid" "$new" + else + mount -t "$fst" -o "$fso" "$device" "$new" + fi + then + if rootdev="$device" check_rootfs $init "$new" && { + test -z "$init" || { + copy_rootfs "$ffs" "$new" && + setup_rootfs "$setup_type" "$new" "$ffs"/etc/device_table + } + } + then + setup_fstab "$new" "$device" "$fst" "$fso" + status=0 + fi + + # clean up the disk. It is worrying if this umount fails! + umount "$new" || test "$force" = "-f" || { + echo "turnup disk: $device: umount failed" >&2 + echo " you must unmount this device cleanly yourself, then use" >&2 + if test -z "$init" + then + echo " turnup with the -f option to boot from the device" >&2 + else + echo " turnup without the -i option to boot from the device" >&2 + fi + status=1 + } + + # if everything went ok boot from this disk + if test $status -eq 0 + then + # memsticks boot like disks, so ignore the -m + boot_rootfs disk "$ffs" "$sleep" "$device" "$uuid" -t "$fst" -o "$fso" + fi + else + echo "turnup disk: $device($*): unable to mount device on $new" >&2 + # If it worked first time + if test -n "$fst" + then + echo " options used: -t $fst -o $fso [error in this script]" >&2 + test -n "$uuid" && + echo " uuid: $uuid (passed with UUID=<uuid>)" >&2 + fi + fi + + # clean up the flash file system + umount "$ffs" + rmdir "$new" "$ffs" + return $status +} + +# +# boot_reset <type> +# Resets the boot type to flash or ram, as appropriate +boot_reset() { + local ffs typ status + + case "$1" in + flash|ram)type="$1" + shift;; + *) echo "turnup: boot_reset($1): invalid type" >&2 + return 1;; + esac + + ffs="/tmp/flashdisk.$$" + mkdir "$ffs" || { + echo "turnup: $1: failed to create temporary directory" >&2 + return 1 + } + + get_flash "$ffs" || { + rmdir "$ffs" + return 1 + } + + # now try to set the /linuxrc appropriately + boot_rootfs "$type" "$ffs" + status=$? + + # clean up + umount "$ffs" + rmdir "$ffs" + return $status +} + +# +# nfs [-i] <root partition> {options} +# Copy the flash file system to the given NFS root partition. +nfs() { + local init nfsroot new ffs + + init= + while test $# -gt 0 + do + case "$1" in + -i) init="$1" + shift;; + -f) force="$1" + shift;; + *) break;; + esac + done + + nfsroot="$1" + test -n "$nfsroot" || { + echo "turnup nfs: $nfsroot: NFS root file system required" >&2 + return 1 + } + shift + + # make temporary directories for the mount points + new="/tmp/rootfs.$$" + ffs="/tmp/flashdisk.$$" + mkdir "$new" "$ffs" || { + echo "turnup nfs: failed to create temporary directories" >&2 + return 1 + } + + # make sure we can get to the flash file system first + get_flash "$ffs" || { + rmdir "$new" "$ffs" + return 1 + } + + # Now mount the device with the given options, note that specifying + # read only is *not* an option, this is important because the boot/disk + # script needs a rw file system + status=1 + fst= + # These settings for for NFS, something better will probably have to + # be done to support other network file systems. + nfsopt="nolock,noatime,hard,intr,rsize=1024,wsize=1024" + fso="$(fsoptions -o "$nfsopt" "$@")" + if mount -o "$nfsopt" "$@" "$nfsroot" "$new" + then + fst="$(fstype "$new")" + umount "$new" || + echo "turnup nfs: $nfsroot($new): umount does not seem to work" >&2 + fi + + if test -n "$fst" && mount -t "$fst" -o "$fso" "$nfsroot" "$new" + then + if :>"$new"/ttt && test -O "$new"/ttt && rm "$new"/ttt + then + if rootdev="$nfsroot" check_rootfs $init "$new" && { + test -z "$init" || { + copy_rootfs "$ffs" "$new" && + setup_rootfs nfs "$new" "$ffs"/etc/device_table + } + } + then + setup_fstab "$new" "$nfsroot" "$fst" "$fso" + status=0 + fi + else + echo "turnup nfs: $nfsroot: partition must be exported no_root_squash" >&2 + fi + + # clean up the disk. It is worrying if this umount fails! + umount "$new" || test "$force" = "-f" || { + echo "turnup nfs: $nfsroot: umount failed" >&2 + if test $status -eq 0 + then + echo " you must unmount this partition cleanly yourself, then use" >&2 + if test -z "$init" + then + echo " turnup with the -f option to boot from the NFS root" >&2 + else + echo " turnup without the -i option to boot from the NFS root" >&2 + fi + status=1 + fi + } + + # if everything went ok boot from this disk + if test $status -eq 0 + then + # the options used are exactly those which worked before. + boot_rootfs nfs "$ffs" 0 "$nfsroot" -t nfs -o "$fso" + fi + else + echo "turnup nfs: $nfsroot($*): unable to mount device on $new" >&2 + # If it worked first time + if test -n "$fst" + then + echo " options obtained: -t $fst -o $fso" >&2 + fi + fi + + # clean up the flash file system + umount "$ffs" + rmdir "$new" "$ffs" + return $status +} + +# +# read_one 'prompt' 'group' 'name' +# read a single value +read_one() { + local n o + o="$(sysval "$2" "$3")" + echo -n "$1 [$o]: " >/dev/tty + read n </dev/tty + test -z "$n" && n="$o" + eval "$3='$n'" +} + +# +# init_network +# Change the network initialisation +init_network() { + # fix the root password + echo "Please enter a new password for 'root'." >/dev/tty + echo "The password must be non-empty for ssh login to succeed!" >/dev/tty + passwd + # now the network configuration + read_one "Host name" network disk_server_name + read_one "Domain name" network w_d_name + read_one "Boot protocol (dhcp|static)" network bootproto + case "$bootproto" in + static) read_one "IP address" network ip_addr + read_one "IP netmask" network netmask + read_one "IP gateway" network gateway + read_one "First DNS server" network dns_server1 + read_one "Second DNS server" network dns_server2 + read_one "Third DNS server" network dns_server3 + echo "$ip_addr $disk_server_name" >> /etc/hosts + ;; + dhcp) sed -i -e "s/localhost\$/localhost $disk_server_name/" /etc/hosts + ;; + *) bootproto=dhcp;; + esac + # + # The other stuff which cannot be changed + hw_addr="$(config mac)" + lan_interface="$(config iface)" + # + # Write this out to a new sysconf + { echo "[network]" + echo "hw_addr=$hw_addr" + echo "lan_interface=$lan_interface" + test -n "$disk_server_name" && echo "disk_server_name=$disk_server_name" + test -n "$w_d_name" && echo "w_d_name=$w_d_name" + echo "bootproto=$bootproto" + case "$bootproto" in + static) echo "ip_addr=$ip_addr" + test -n "$netmask" && echo "netmask=$netmask" + test -n "$gateway" && echo "gateway=$gateway" + test -n "$dns_server1" && echo "dns_server1=$dns_server1" + test -n "$dns_server2" && echo "dns_server2=$dns_server2" + test -n "$dns_server3" && echo "dns_server3=$dns_server3" + ;; + esac + } >/etc/default/sysconf + # + # And reload the result + sysconf reload + # + # The remove the spurious 'init' motd + rm /etc/motd +} + +# +# Basic command switch (this should be the only thing in this +# script which actually does anything!) +case "$1" in +init) shift + if init_network "$@" + then + echo "turnup init: you must reboot for the changes to take effect" >&2 + echo " You may want to run 'turnup preserve' to save these settings," >&2 + echo " after making any additional configuration changes which you" >&2 + echo " require." >&2 + else + exit 1 + fi;; +disk) shift + disk "$@";; +memstick) + shift + disk -m "$@" -o noatime;; +nfs) shift + nfs "$@";; +flash) boot_reset flash;; +ram) boot_reset ram;; +preserve) + shift + sysconf save "$@";; +restore) + shift + sysconf restore "$@";; +*) echo "\ +usage: turnup command [options] + commands: + help + output this help + init + correct errors in network information + initialise network information when DHCP is not available + change network information + disk [-i] [-s<seconds>] <device>|<uuid> [mount options] + With -i make <device> a bootable file system then (with or + without -i) arrange for the next reboot to use that device. + The device must already be formatted as a file system, with + -i it must be completely empty, without it must contain an + apparently bootable file system. -s (for example -s5) + specifies a delay in seconds to wait at boot time before + mounting the device. + memstick [-i] <device>|<uuid> [mount options] + Behaves as disk however options appropriate to a flash memory + stick are automatically added + nfs [-i] <nfs mount path> [mount options] + <nfs mount path> must be a mountable NFS file system. With + -i the partition must be empty and is initialised with a + bootable file system. Without -i the partition must already + contain a bootable file system. In either case the NFS + partition must be available to be mounted without root id + sqashing (i.e. root must be root) and it will be selected + as the root file system for subsequent reboots. + A default set of -o options are provided, additional options + may be given on the command line (multiple -o options will + be combined into a single -o). + flash + Revert to booting from the flash disk on next reboot. + ram + Boot (once) into a ramdisk, subsequent boots will be to + the flash file system. + preserve + Save the system configuration to the SysConf partition, you + will need to create the SysConf partition from the boot loader + before using this if SysConf does not already exist. This + just runs 'sysconf save'. + restore + Restore a previously saved system configuration. This just + runs 'sysconf restore'. + disk formatting: + The argument to 'nfs' or 'disk' must be an empty partition + of sufficient size to hold the root file system (at least + 16MByte but more is recommended to allow package installation). + An appropriate ext3 partition can be made using the command: + + mke2fs -j <device> # for example: /dev/sda1 + + An appropriate NFS partition can be emptied using 'rm', but + must be set up (exported) on the NFS server." >&2 + exit 0;; +esac +# Exit with return code from command. |