--- /dev/null
+#!/bin/sh
+# sysconf
+#
+# Utility to manipulate system configuration information held
+# in a System Configuration partition
+#
+
+# hardware
+# the 'Hardware' string from cpuinfo
+hardware(){
+ sed -n 's!^Hardware *: !!p' /proc/cpuinfo
+}
+#
+# machine
+# outputs an identifier of the current machine - i.e. the board
+# slugos is running on.
+machine(){
+ case "$(hardware)" in
+ *Coyote*) echo coyote;;
+ *IXDPG425*) echo ixdpg425;;
+ *WRV54G*) echo wrv54g;;
+ *IXDP425*) echo ixdp425;;
+ *IXDP465*) echo ixdp465;;
+ *IXCDP1100*) echo ixcdp1100*;;
+ *Avila*) echo avila;;
+ *Loft*) echo loft;;
+ *NAS?100d*) echo nas100d;;
+ *DSM?G600*) echo dsmg600;;
+ *NSLU2*) echo nslu2;;
+ *FSG?3*) echo fsg3;;
+ *) echo unknown;;
+ esac
+}
+
+# NSLU2 flash layout is non-standard.
+case "$(machine)" in
+nslu2)
+ kpart="Kernel"
+ syspart="SysConf"
+ ffspart="Flashdisk";;
+*)
+ kpart="kernel"
+ syspart="sysconfig"
+ ffspart="filesystem";;
+esac
+
+#
+# mtblockdev "name"
+# return (output) the block device name for flash parition "name"
+# /proc/mtd has the general form:
+# dev: size erasesize name
+# mtd5: 00020000 00020000 "FIS directory"
+# use this rather than hard-wiring the device because the partition
+# table can change - looking in /proc/mtd is more reliable.
+mtblockdev(){
+ sed -n 's!^mtd\([0-9][0-9]*\):[^"]*"'"$1"'"$!/dev/mtdblock\1!p' /proc/mtd
+}
+
+#
+# sysconf_valid
+# return true if the SysConf partition exists and seems to be
+# potentially valid (it starts with a reasonable length).
+sysconf_valid(){
+ local sysdev
+ sysdev="$(mtblockdev $syspart)"
+ test -n "$sysdev" -a -b "$sysdev" &&
+ devio "<<$sysdev" '!! b.10>s32768<&!'
+}
+
+#
+# sysvalmatch "section" "name" 'pattern' "configuration file"
+# sysvalof "section" "name" "configuration file"
+# sysval "section" "name"
+# outputs the value of the SysConf variable 'name' from section 'section',
+# if there are multiple definitions only the last is output
+# NOTE: these functions should only be used internally, add entries to 'config'
+# below if necessary. This is because 'config' does the defaulting.
+sysvalmatch(){
+ sed -n '/^\['"$1"'\]$/,/^\[.*\]$/s/^'"$2"'=\('"$3"'\)$/\1/p' "$4" | sed -n '$p'
+}
+sysvalof(){
+ sysvalmatch "$1" "$2" '.*' "$3"
+}
+sysval(){
+ test -r "$config_root/etc/default/sysconf" &&
+ sysvalof "$1" "$2" "$config_root/etc/default/sysconf"
+}
+#
+# syssection "section"
+# outputs all the values from the given section changed to the format "name value"
+# (i.e. the '=' is dropped).
+syssection(){
+ test -r "$config_root/etc/default/sysconf" &&
+ sed -n '/^\['"$1"'\]$/,/^\[.*\]$/s/^\([^=]*\)=\(.*\)$/\1 \2/p' "$config_root/etc/default/sysconf"
+}
+#
+# config "value"
+# convenience callers for specific values to avoid mis-typing in scripts
+# NOTE: this function does the defaulting, 'sysval' does not!
+# config_root: if set this will override the root where config/sysval
+# looks for /etc/default/sysconf
+config(){
+ case "$1" in
+ host) if test -n "$(sysval network disk_server_name)"
+ then
+ sysval network disk_server_name
+ elif test -n "$(sysval network default_server_name)"
+ then
+ sysval network default_server_name
+ else
+ # because we want the name to remain constant:
+ echo "brokenslug"
+ fi;;
+ domain) sysval network w_d_name;;
+ iface) if test -n "$(sysval network lan_interface)"
+ then
+ sysval network lan_interface
+ else
+ echo eth0
+ fi;;
+ ip) if test -n "$(sysval network ip_addr)"
+ then
+ sysval network ip_addr
+ else
+ echo 192.168.1.77
+ fi;;
+ netmask)sysval network netmask;;
+ gateway)sysval network gateway;;
+ dns) sysval network dns_server1;;
+ dns2) sysval network dns_server2;;
+ dns3) sysval network dns_server3;;
+ boot) if test -n "$(sysval network bootproto)"
+ then
+ sysval network bootproto
+ else
+ echo dhcp
+ fi;;
+ valid) test -r "$config_root/etc/default/sysconf";;
+ *) return 1;;
+ esac
+}
+
+#
+# sysconf_read [prefix]
+# read the $syspart partition (if present) writing the result into
+# /etc/default/sysconf, if the result is empty it will be removed.
+sysconf_read(){
+ local sysdev sedcmd config_root
+ config_root="$1"
+ rm -f /tmp/sysconf.new
+ sysdev="$(mtblockdev $syspart)"
+ if sysconf_valid
+ then
+ # Read the defined part of $syspart into /etc/default/sysconf.
+ # $syspart has lines of two forms:
+ #
+ # [section]
+ # name=value
+ #
+ # In practice $syspart also contains other stuff, use the command:
+ #
+ # devio '<</dev/mtd1;cpb'
+ #
+ # to examine the current settings. The badly formatted stuff
+ # is removed (to be exact, the sed script selects only lines
+ # which match one of the two above). The lan interface, which
+ # on NSLU2 defaults to ixp0, is changed to the correct value for
+ # slugos, eth0. The bootproto, which LinkSys sets to static in
+ # manufacturing, is reset to dhcp if the IP is still the
+ # original (192.168.1.77)
+ sedcmd='/^\[[^][]*\]$/p;'
+ # only do the ip_addr and lan_interface fixups on NSLU2
+ if test "$(machine)" = nslu2
+ then
+ sedcmd="$sedcmd"'
+ s/^lan_interface=ixp0$/lan_interface=eth0/;
+ /^ip_addr=192\.168\.1\.77$/,/^bootproto/s/^bootproto=static$/bootproto=dhcp/;'
+ fi
+ # and only print lines of the correct form
+ sedcmd="$sedcmd"'
+ /^[-a-zA-Z0-9_][-a-zA-Z0-9_]*=/p'
+
+ devio "<<$sysdev" cpb fb1,10 | sed -n "$sedcmd" >/tmp/sysconf.new
+ fi
+ #
+ # test the result - sysconf must be non-empty
+ if test -s /tmp/sysconf.new
+ then
+ mv /tmp/sysconf.new "$config_root/etc/default/sysconf"
+ else
+ rm -f /tmp/sysconf.new
+ return 1
+ fi
+}
+
+#
+# sysconf_default [prefix]
+# Provde a default /etc/default/sysconf when there is no $syspart partition,
+# or when it is invalid, this function will read from an existing sysconf,
+# copying the values into the new one.
+# sysconf_line tag config-tag
+# write an appropriate line if the config value is non-empty
+sysconf_line(){
+ config "$2" | {
+ local value
+ read value
+ test -n "$value" && echo "$1"="$value"
+ }
+}
+#
+sysconf_default(){
+ local config_root
+ config_root="$1"
+ { echo '[network]'
+ sysconf_line disk_server_name host
+ sysconf_line w_d_name domain
+ sysconf_line lan_interface iface
+ sysconf_line ip_addr ip
+ sysconf_line netmask netmask
+ sysconf_line gateway gateway
+ sysconf_line dns_server1 dns
+ sysconf_line dns_server2 dns2
+ sysconf_line dns_server3 dns3
+ sysconf_line bootproto boot
+ } >/tmp/sysconf.new
+ mv /tmp/sysconf.new "$config_root/etc/default/sysconf"
+}
+
+#
+# sysconf_reload [prefix]
+# read the values from /etc/default/sysconf and use these values to set
+# up the following system files:
+#
+# /etc/hostname
+# /etc/defaultdomain
+# /etc/resolv.conf
+# /etc/network/interfaces
+# /etc/motd
+#
+sysconf_reload(){
+ local config_root host domain iface boot ip netmask gateway ifname iftype
+ config_root="$1"
+ host="$(config host)"
+ test -n "$host" && echo "$host" >"$config_root/etc/hostname"
+ domain="$(config domain)"
+ test -n "$domain" && echo "$domain" >"$config_root/etc/defaultdomain"
+ #
+ # The DNS server information gives up to three nameservers,
+ # but this currently only binds in the first.
+ {
+ test -n "$domain" && echo "search $domain"
+ test -n "$(config dns)" && echo "nameserver $(config dns)"
+ test -n "$(config dns2)" && echo "nameserver $(config dns2)"
+ test -n "$(config dns3)" && echo "nameserver $(config dns3)"
+ } >"$config_root/etc/resolv.conf"
+ #
+ # Ethernet information. This goes into /etc/network/interfaces,
+ # however this is only used for static setup (and this is not
+ # the default). With dhcp the slugos udhcp script,
+ # /etc/udhcpc.d/50default, loads the values from sysconf.
+ iface="$(config iface)"
+ boot="$(config boot)"
+ # Only dhcp and static are supported at present - bootp
+ # support requires installation of appropriate packages
+ # dhcp is the fail-safe
+ case "$boot" in
+ dhcp|static) ;;
+ *) boot=dhcp;;
+ esac
+ #
+ ip="$(config ip)"
+ netmask="$(config netmask)"
+ gateway="$(config gateway)"
+ {
+ echo "# /etc/network/interfaces"
+ echo "# configuration file for ifup(8), ifdown(8)"
+ echo "#"
+ echo "# The loopback interface"
+ echo "auto lo"
+ echo "iface lo inet loopback"
+ echo "#"
+ echo "# The interface used by default during boot"
+ echo "auto $iface"
+ echo "# Automatically generated from /etc/default/sysconf"
+ echo "# address, netmask and gateway are ignored for 'dhcp'"
+ echo "# but required for 'static'"
+ echo "iface $iface inet $boot"
+ # The following are ignored for DHCP but are harmless
+ test -n "$ip" && echo " address $ip"
+ test -n "$netmask" && echo " netmask $netmask"
+ test -n "$gateway" && echo " gateway $gateway"
+ #
+ # Now read all the other ARPHRD_ETHER (type=1) interfaces
+ # and add an entry for each.
+ for ifname in $(test -d /sys/class/net && ls /sys/class/net)
+ do
+ if test -r "/sys/class/net/$ifname/type" -a "$ifname" != "$iface"
+ then
+ read iftype <"/sys/class/net/$ifname/type"
+ case "$iftype" in
+ 1) echo "#"
+ echo "# /sys/class/net/$ifname:"
+ echo "auto $ifname"
+ echo "iface $ifname inet dhcp";;
+ esac
+ fi
+ done
+ } >"$config_root/etc/network/interfaces"
+ #
+ # Finally rewrite /etc/motd
+ { echo "Host name: $host"
+ echo "Domain name: $domain"
+ echo "Network boot method: $boot"
+ case "$boot" in
+ static) echo "Host IP address: $ip";;
+ esac
+ echo "Use 'sysconf init' to reset the configuration"
+ echo "Use 'sysconf save' to save the configuration permanently"
+ echo "Use 'sysconf restore' to restore a previously saved configuration"
+ echo "Use 'sysconf help' for more information"
+ } >"$config_root/etc/motd"
+}
+
+#
+# sysconf_save_conffiles <flash-directory> <dest> <list>
+# preserve the configuration files in a directory or in a CPIO archive
+# (which is *not* compressed). If <dest> is a directory the files are
+# copied, otherwise a CPIO archive is made with that name. <list> is
+# the listing file giving the preserved files and the processing option.
+sysconf_save_conffiles(){
+ local ffsdir dest list file
+ ffsdir="$1"
+ saved="$2"
+ list="$3"
+ test -n "$ffsdir" -a -r "$ffsdir/etc/default/conffiles" -a -n "$saved" -a -n "$list" || {
+ echo "sysconf_save_conffiles: invalid arguments: '$*'" >&2
+ echo " usage sysconf_save_conffiles <flash-directory> <dest> <list>" >&2
+ return 1
+ }
+ #
+ ( cd "$ffsdir"
+ find etc/*.conf $(sed 's!^/!!' usr/lib/ipkg/info/*.conffiles) ! -type d -newer etc/.configured -print |
+ sed 's/^/diff /'
+ exec sed 's/#.*$//;/^[ ]*$/d' etc/default/conffiles
+ ) | sed 's!^/*!!' |
+ awk '{ op=$1; $1=""; file[$0]=op }
+ END{ for (f in file) if (file[f] != "ignore") print file[f] f }' |
+ while read op file
+ do
+ if test -e "$ffsdir/$file"
+ then
+ echo "$op $file" >&3
+ echo "$file"
+ fi
+ done 3>"$list" | (
+ cd "$ffsdir"
+ if test -d "$saved"
+ then
+ exec cpio -p -d -m -u "$saved"
+ else
+ exec cpio -o -H crc >"$saved"
+ fi
+ )
+}
+
+#
+# sysconf_verify file
+# this is called with the name of a 'diff' file which is, indeed,
+# different and with all the std streams connected to the tty. It
+# returns a status code to say whether (0) or not (1) to copy the
+# file over.
+#
+# globals: the following must be defined in the calling context!
+# saved: the directory containing the unpacked saved files
+# ffsdir: the flash directory to which the files are being restored (/)
+#
+sysconf_verify_help() {
+ echo "Please specify how to handle this file or link, the options are as follows,"
+ echo "two character abbreviations may be used:"
+ echo
+ echo " keep: retain the old file, overwrite the new flash image file"
+ echo " upgrade: retain the new file, the old (saved) file is not used"
+ echo " diff: display the differences between the old and the new using diff -u"
+ echo " shell: temporarily start an interactive shell (sh -i), exit to continue"
+ echo " skip: ignore this file for the moment. The file is left in the directory"
+ echo " $saved and many be handled after this script has completed"
+}
+#
+sysconf_verify() {
+ local command file
+
+ # return 1 here causes the file not to be overwritten,
+ # control should never get here!
+ test -n "$sysconf_noninteractive" && {
+ echo "$0: $*: changed file cannot be handled non-interactively" >&2
+ return 1
+ }
+
+ file="$1"
+ echo "$0: $file: configuration file changed."
+ sysconf_verify_help "$file"
+ while :
+ do
+ echo -n "option: "
+ read command
+ case "$command" in
+ ke*) return 0;;
+ up*) rm "$saved/$file"
+ return 1;;
+ di*) echo "DIFF OLD($saved) NEW($ffsdir)"
+ diff -u "$saved/$file" "$ffsdir/$file";;
+ sh*) PS1="$file: " sh -i;;
+ sk*) return 1;;
+ *) sysconf_verify_help "$file";;
+ esac
+ done
+}
+# the same, but for a link
+sysconf_verify_link() {
+ local command link
+
+ # return 1 here causes the file not to be overwritten,
+ # control should never get here!
+ test -n "$sysconf_noninteractive" && {
+ echo "$0: $*: changed link cannot be handled non-interactively" >&2
+ return 1
+ }
+
+ link="$1"
+ echo "reflash: $link: configuration link changed."
+ sysconf_verify_help "$link"
+ while :
+ do
+ echo -n "option: "
+ read command
+ case "$command" in
+ ke*) return 0;;
+ up*) rm "$saved/$link"
+ return 1;;
+ di*) echo "DIFF:"
+ echo "OLD($saved): $link -> $(readlink "$saved/$link")"
+ echo "NEW($ffsdir): $link -> $(readlink "$ffsdir/$link")";;
+ sh*) PS1="$link: " sh -i;;
+ sk*) return 1;;
+ *) sysconf_verify_help "$link";;
+ esac
+ done
+}
+
+#
+# sysconf_restore_conffiles <flash-directory> <source-dir> <restore>
+# restore the configuration files from a directory. 'source-dir'
+# If <source> is a directory of files from sysconf_save_conffiles. The
+# list of files restored is written to the third argument (restore),
+# but is not required (/dev/null would be ok).
+#
+# the list of files to restore is read from stdin, along with the
+# processing option for each file (the format is as produced by
+# sysconf_save_conffiles in the 'list' output).
+sysconf_restore_conffiles(){
+ local ffsdir saved restore
+ # these are the globals used by the above function
+ ffsdir="$1"
+ saved="$2"
+ restore="$3"
+ test -n "$ffsdir" -a -r "$ffsdir/etc/default/conffiles" -a -d "$saved" -a -n "$restore" || {
+ echo "restore_conffiles: invalid arguments: '$*'" >&2
+ echo " usage sysconf_restore_conffiles <flash-directory> <source-dir> <list>" >&2
+ return 1
+ }
+ #
+ # read the list and process each given file
+ while read op file
+ do
+ # handle .configured specially (to preserve the original datestamp)
+ if test "$file" = "etc/.configured"
+ then
+ # this should definately not fail because of the test above!
+ if cp -a "$saved/$file" "$ffsdir/$file"
+ then
+ echo "$file" >&3
+ else
+ echo "sysconf_restore_conffiles: $file: timestamp copy failed (ignored)" >&2
+ fi
+ elif test -h "$saved/file" -o -h "$ffsdir/$file"
+ then
+ # new or old symbolic link
+ if test -h "$saved/$file" -a -h "$ffsdir/$file" &&
+ test "$(readlink "$saved/$file")" = "$(readlink "$ffsdir/$file")"
+ then
+ # no change
+ echo "$file" >&3
+ else
+ # assume a change regardless
+ case "$op" in
+ preserve)
+ echo "$file"
+ echo "$file" >&3;;
+ diff) # need user input
+ if sysconf_verify_link "$file" <>/dev/tty >&0 2>&0
+ then
+ echo "$file"
+ echo "$file" >&3
+ fi;;
+ esac
+ fi
+ else
+ # only overwrite if necessary
+ if test -e "$ffsdir/$file" && cmp -s "$saved/$file" "$ffsdir/$file"
+ then
+ # do not overwrite
+ echo "$file" >&3
+ elif test ! -e "$ffsdir/$file"
+ then
+ # always preserve
+ echo "$file"
+ echo "$file" >&3
+ else
+ case "$op" in
+ preserve)
+ echo "$file"
+ echo "$file" >&3;;
+ diff) # the files are different, get user input
+ if sysconf_verify "$file" <>/dev/tty >&0 2>&0
+ then
+ echo "$file"
+ echo "$file" >&3
+ fi;;
+ esac
+ fi
+ fi
+ done 3>"$restore" | (cd "$saved"; exec cpio -p -d -u "$ffsdir")
+}
+
+#
+# sysconf_test_restore <flash-directory> <source-dir>
+# return true only if the restore does not need to do an interactive
+# compare
+sysconf_test_restore(){
+ local ffsdir saved
+ # these are the globals used by the above function
+ ffsdir="$1"
+ saved="$2"
+ # this is an error case, but return 0 so that the error is
+ # detected later
+ test -n "$ffsdir" -a -r "$ffsdir/etc/default/conffiles" -a -d "$saved" ||
+ return 0
+ #
+ # read the list and check each diff file (this is just a copy of the
+ # logic above with all the work removed!)
+ while read op file
+ do
+ # handle .configured specially (to preserve the original datestamp)
+ if test "$op" != diff
+ then
+ : # no diff required
+ elif test "$file" = "etc/.configured"
+ then
+ : # special handling
+ elif test -h "$saved/file" -o -h "$ffsdir/$file"
+ then
+ # new or old symbolic link
+ if test -h "$saved/$file" -a -h "$ffsdir/$file" &&
+ test "$(readlink "$saved/$file")" = "$(readlink "$ffsdir/$file")"
+ then
+ : # no change
+ else
+ # assume a change regardless
+ return 1
+ fi
+ else
+ # only overwrite if necessary
+ if test -e "$ffsdir/$file" && cmp -s "$saved/$file" "$ffsdir/$file"
+ then
+ : # do not overwrite
+ elif test ! -e "$ffsdir/$file"
+ then
+ : # always preserve
+ else
+ # a change
+ return 1
+ fi
+ fi
+ done
+
+ return 0
+}
+
+#
+# mountflash "flash device" "flash root directory" {mount options}
+# Finds and mounts the flash file system on the given directory
+mountflash(){
+ local ffsdev ffsdir
+
+ ffsdev="$1"
+ test -n "$ffsdev" -a -b "$ffsdev" || {
+ echo "$0: unable to find flash file system to copy ($ffsdev)" >&2
+ return 1
+ }
+ shift
+
+ ffsdir="$1"
+ test -n "$ffsdir" -a -d "$ffsdir" || {
+ echo "$0: mountflash $ffsdir: not a directory (internal error)" >&2
+ return 1
+ }
+ shift
+
+ mount -t jffs2 "$@" "$ffsdev" "$ffsdir" || {
+ echo "$0: $ffsdev: unable to mount flash file system on $ffsdir" >&2
+ return 1
+ }
+ return 0
+}
+
+#
+# umountflash [-r] "flash device"
+# unmount any instance of the given flash device, if -r is specified a mount on
+# root is an error, otherwise a mount on root is ignored (and remains).
+umountflash(){
+ local rootok ffsno ffsdev
+ rootok=1
+ case "$1" in
+ -r) rootok=
+ shift;;
+ esac
+ #
+ # The argument is ffsdev
+ ffsdev="$1"
+ ffsno="$(devio "<<$ffsdev" prd)"
+ test -n "$ffsno" -a "$ffsno" -ge 0 || {
+ echo "$0: $ffsdev: device number $ffsno is not valid, cannot continue." >&2
+ return 1
+ }
+ #
+ # Make sure that Flashdisk isn't mounted on /
+ if test -z "$rootok" -a "$(devio "<</etc/init.d/sysconfsetup" prd)" -eq "$ffsno"
+ then
+ echo "$0: $ffsdev is mounted on /, unable to continue" >&2
+ return 1
+ fi
+ #
+ # The function is currently always used interactively, so output
+ echo "$0: umounting any existing mount of $ffsdev" >&2
+ #
+ # check each mount point, do this last first because otherwise nested
+ # mounts of ffsdev cannot be umounted.
+ ffs_umount() {
+ local device mp type options stuff
+
+ read device mp type options stuff
+ test -z "$device" && return 0
+
+ # handle following entries first
+ ffs_umount || return 1
+
+ # handle this entry, since this is currently only used for unmounting
+ # the flash root partition we know a file which must exist...
+ case "$mp/$type" in
+ //jffs2);; # skip /
+ */jffs2)test "$(devio "<<$mp/etc/init.d/sysconfsetup" prd 2>/dev/null)" -ne "$ffsno" ||
+ umount "$mp" || {
+ echo "$0: $mp: unable to umount $ffsdev" >&2
+ return 1
+ };;
+ esac
+
+ return 0
+ }
+ #
+ ffs_umount </proc/mounts || {
+ echo "$0: umount $ffsdev from all mount points then re-run $0" >&2
+ return 1
+ }
+
+ return 0
+}
+
+#
+# sysconf_save
+# save the system configuration to $syspart - $syspart must exist and
+# there must be a writeable device for it.
+sysconf_save(){
+ local sysdev ffsdev ffsdir saved list size status
+ ffsdev="$(mtblockdev $ffspart)"
+ sysdev="$(mtblockdev $syspart)"
+ status=1
+ if test -n "$sysdev" -a -b "$sysdev" -a -n "$ffsdev" -a -b "$ffsdev"
+ then
+ # this will succeed silently if the flash device is on /
+ umountflash "$ffsdev" || exit 1
+ #
+ # Everything is umounted, now remount on a temporary directory.
+ ffsdir="/tmp/flashdisk.$$"
+ mkdir "$ffsdir" || {
+ echo "$0: $ffsdir: failed to create temporary directory" >&2
+ exit 1
+ }
+ #
+ mountflash "$ffsdev" "$ffsdir" -o ro || {
+ rmdir "$ffsdir"
+ exit 1
+ }
+ # need temporary files for the cpio output and the listing
+ saved=/tmp/cpio.$$
+ list=/tmp/preserve.$$
+ rm -rf "$saved" "$list"
+ sysconf_save_conffiles "$ffsdir" "$saved" "$list" || {
+ echo "$0: $saved: archive of saved configuration files failed" >&2
+ rm -rf "$saved"
+ rm "$list"
+ umount "$ffsdir" && rmdir "$ffsdir" ||
+ echo "$0: $ffsdir: temporary directory cleanup failed" >&2
+ return 1
+ }
+ # ignore the error in this case:
+ umount "$ffsdir" && rmdir "$ffsdir" ||
+ echo "$0: $ffsdir: temporary directory cleanup failed" >&2
+ #
+ # we now have:
+ # /etc/default/sysconf the basic config
+ # /tmp/preserve.$$ the list of saved files
+ # /tmp/cpio.$$ the CPIO archive of those files
+ #
+ # make one big file with the sysconf data followed by the
+ # compressed archive in /tmp/sysconf.$$
+ { { cat /etc/default/sysconf
+ echo '[preserve]'
+ } | sed -n '1,/^\[preserve\]^/p'
+ while read op file
+ do
+ echo "$op"="$file"
+ done <"$list"
+ } >/tmp/sysconf.$$
+ size="$(devio "<</tmp/sysconf.$$" 'pr$')"
+ gzip -9 <"$saved" >>/tmp/sysconf.$$
+ #
+ # more cleanup, then try to write the new sysconf to $syspart
+ # the format is a 4 byte big-endian length then the text data
+ # if the data won't fit exit with error code 7
+ rm "$saved" "$list"
+ devio -p "<</tmp/sysconf.$$" ">>$sysdev" '
+ $( $4+ # >
+ !! 7
+ $) 0
+ wb '"$size"',4
+ cp $'
+ case $? in
+ 0) echo " done" >&2
+ status=0;;
+ 1) echo " failed" >&2
+ echo " $syspart could not be written (no changes made)" >&2;;
+ 3) echo " failed" >&2
+ echo " $syspart partially written, you may want to reset it" >&2;;
+ 7) echo " failed" >&2
+ echo " $syspart is too small: $size bytes required" >&2
+ echo " No change made" >&2;;
+ *) echo " failed" >&2
+ echo " Internal error writing $syspart" >&2;;
+ esac
+ #
+ rm -f /tmp/sysconf.$$
+ else
+ echo "sysconf save: $syspart or $ffspart partition not found" >&2
+ echo " A RedBoot partition named '$syspart' must exist in the system" >&2
+ echo " flash memory for this command to work, and there must be a" >&2
+ echo " block device to access this partition (udev will normally" >&2
+ echo " create this automatically. The flash partition contents must" >&2
+ echo " also be accessible in a partition called '$ffspart'" >&2
+ echo
+ echo " To create the $syspart partition use the 'fis create' command" >&2
+ echo " in the RedBoot boot loader, it is sufficient to make the" >&2
+ echo " partition one erase block in size unless you have substantially" >&2
+ echo " increased the size of the files listed in /etc/default/conffiles" >&2
+ fi
+
+ return $status
+}
+
+#
+# sysconf_restore [auto]
+# restore previously saved configuration information from $syspart
+sysconf_restore_error(){
+ local root
+ root="$1"
+ shift
+ # -------------------------------------------------------------------------------
+ { echo " WARNING: saved configuration files not restored"
+ test -n "$1" && echo "$*"
+ echo
+ echo "The configuration of this machine has been reinitialised using the values"
+ echo "from /etc/default/sysconf, however configuration files saved in the $syspart"
+ echo "partition have not been restored."
+ echo
+ echo "You can restore these files by correcting any reported errors then running"
+ echo
+ echo " sysconf restore"
+ echo
+ echo "from the command line. This will completely reinitialise the configuration"
+ echo "using the information in the $syspart partition."
+ } >"$root/etc/motd"
+ cat "$root/etc/motd" >&2
+}
+#
+sysconf_restore(){
+ local sysdev ffsdev ffsdir saved restore size status sysconf_noninteractive config_root
+
+ # if set this means 'do no diff' - this avoids the code above which
+ # would open /dev/tty and therefore allows this stuff to be done from
+ # an init script
+ sysconf_noninteractive=
+ test "$1" = auto && sysconf_noninteractive=1
+
+ ffsdev="$(mtblockdev $ffspart)"
+ sysdev="$(mtblockdev $syspart)"
+ status=1
+ if test -n "$sysdev" -a -b "$sysdev" -a -n "$ffsdev" -a -b "$ffsdev" &&
+ sysconf_valid
+ then
+ # this will succeed silently if the flash device is on /
+ umountflash "$ffsdev" || exit 1
+ #
+ # Everything is umounted, now remount on a temporary directory.
+ ffsdir="/tmp/flashdisk.$$"
+ config_root="$ffsdir"
+ mkdir "$ffsdir" || {
+ echo "$0: $ffsdir: failed to create temporary directory" >&2
+ exit 1
+ }
+ #
+ mountflash "$ffsdev" "$ffsdir" || {
+ rmdir "$ffsdir"
+ exit 1
+ }
+ #
+ # first restore the $syspart section
+ sysconf_read "$ffsdir" || sysconf_default "$ffsdir"
+ #
+ # now use this to regenerate the system files
+ sysconf_reload "$ffsdir"
+ #
+ # now examine the [preserve] section, if it is there restore
+ # it if possible.
+ if test -n "$(syssection preserve)"
+ then
+ # 'saved' is a directory, 'restore' is a file (which is
+ # used to detect unrestored files). The directory needs
+ # to be populated with files.
+ saved=/tmp/cpio.$$
+ restore=/tmp/restore.$$
+ rm -rf "$saved" "$restore"
+ #
+ mkdir "$saved" || {
+ sysconf_restore_error "$ffsdir" "$saved: failed to create temporary directory"
+ return 1
+ }
+ #
+ # the CPIO archive is gzip compressed after the text part
+ # of sysconf, gzip will handle the LZ stream termination
+ # correctly (and break the pipe) so we don't need to know
+ # the real length of the data
+ devio "<<$sysdev" '<=b4+.' 'cp $s-' | gunzip | (
+ cd "$saved"
+ exec cpio -i -d -m -u
+ ) || {
+ rm -rf "$saved"
+ sysconf_restore_error "$ffsdir" "$saved: cpio -i failed"
+ return 1
+ }
+ # either there must be no 'diff' files or it must
+ # be possible to interact with a real user.
+ if test -z "$sysconf_noninteractive" ||
+ syssection preserve | sysconf_test_restore "$ffsdir" "$saved"
+ then
+ #
+ # remove the 'init' motd from sysconf_reload
+ rm "$ffsdir/etc/motd"
+ #
+ # now restore from the directory, using the information in
+ # the preserve section, if this fails in a non-interactive
+ # setting the system might not reboot
+ syssection preserve |
+ sysconf_restore_conffiles "$ffsdir" "$saved" "$restore" || {
+ # there is a chance of the user cleaning this up
+#------------------------------------------------------------------------------
+ sysconf_restore_error "$ffsdir" \
+"$0: $saved: restore of saved configuration files failed.
+ The flash file system is mounted on $ffsdir.
+ The saved files are in $saved and the list of files selected for
+ restore is in $restore.
+ You should restore any required configuration from $saved, then umount
+ $ffsdir and reboot."
+ # this prevents cleanup/umount
+ return 1
+ }
+ #
+ # remove the copied files (i.e. the ones which were preserved)
+ ( cd "$saved"
+ exec rm $(cat "$restore")
+ )
+ rm "$restore"
+ #
+ # clean up, files left in $saved need to be handled by the user
+ files="$(find "$saved" ! -type d -print)"
+ if test -n "$files"
+ then
+#------------------------------------------------------------------------------
+ sysconf_restore_error "$ffsdir" \
+"$0: some saved configuration files have not been handled:
+
+$files
+
+These files can be examined in $saved and restored to
+$ffsdir if required. The saved files are in a temporary
+directory and will not be retained across a reboot - copy then elsewhere if
+you are unsure whether they are needed."
+ return 1
+ fi
+ #
+ # so this is safe now (no files, links etc)
+ rm -rf "$saved"
+ else
+ rm -rf "$saved"
+ # non-interactive and some changed diff files
+ sysconf_restore_error "$ffsdir" \
+"$0: some of the saved configuration files must be
+examined before restoration"
+ # but continue to the umount
+ fi
+ fi
+ #
+ # ignore the error in this case:
+ umount "$ffsdir" && rmdir "$ffsdir" ||
+ echo "$0: $ffsdir: temporary directory cleanup failed" >&2
+ status=0
+ else
+ echo "sysconf restore: $syspart or $ffspart partition not found" >&2
+ echo " You must have used 'sysconf save' to save configuration data" >&2
+ echo " into the $syspart partition before using this command. The command" >&2
+ echo " will restore the configuration data to the flash root partition" >&2
+ echo " named '$ffspart' - this must also be accessible." >&2
+ fi
+
+ 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'"
+}
+
+#
+# sysconf_init
+# Change the network initialisation
+sysconf_init() {
+ 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 $disk_server_name/" /etc/hosts
+ ;;
+ *) bootproto=dhcp;;
+ esac
+ #
+ # The other stuff which cannot be changed
+ lan_interface="$(config iface)"
+ #
+ # Write this out to a new sysconf
+ { echo "[network]"
+ 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
+}
+
+#
+# sysconf_help
+# help text
+sysconf_help(){
+ # -------------------------------------------------------------------------------
+ echo "sysconf: usage: sysconf init|read|default|reload|save|restore" >&2
+ echo " init: initialise network information when DHCP is not available" >&2
+ echo " read: the current $syspart partition is read into /etc/default/sysconf" >&2
+ echo " default: a default /etc/default/sysconf is created" >&2
+ echo " reload: system configuration files are recreated from /etc/default/sysconf" >&2
+ echo " save: /etc/default/sysconf and the files listed in /etc/default/conffiles" >&2
+ echo " are written to the $syspart partition" >&2
+ echo " restore: the configuration information in the $syspart partition saved by" >&2
+ echo " 'sysconf save' is restored" >&2
+}
+
+#
+# the real commands
+sysconf_command="$1"
+test $# -gt 0 && shift
+case "$sysconf_command" in
+init) sysconf_init "$@";;
+read) sysconf_read "$@";;
+default)sysconf_default "$@";;
+reload) sysconf_reload "$@";;
+save) sysconf_save "$@";;
+restore)sysconf_restore "$@";;
+valid) sysconf_valid "$@";;
+
+sysconf)# just load the functions
+ ;;
+
+*) # help text
+ sysconf_help "$@";;
+esac
git.openpandora.org / openembedded.git / commitdiff