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Viewing changes to initramfs-tools-script

  • Committer: Teddy Hogeborn
  • Date: 2009-09-16 23:28:39 UTC
  • Revision ID: teddy@fukt.bsnet.se-20090916232839-3o7i8qmcdcz5j1ya
* init.d-mandos (Required-Start, Required-Stop): Bug fix: Added
                 "$syslog", thanks to Petter Reinholdtsen
                 <pere@hungry.com> (Debian bug #546928).

* initramfs-tools-script: Removed erroneous comment.

* plugins.d/askpass-fifo.c: Removed TEMP_FAILURE_RETRY since it is
                            not needed.

* plugins.d/mandos-client.c (main): Bug fix: Initialize
                                    "old_sigterm_action".

* plugins.d/splashy.c (main): Bug fix: really check return value from
                              "sigaddset".  Fix some warnings on
                              64-bit systems.

* plugins.d/usplash.c (termination_handler, main): Save received
                                                   signal and
                                                   re-raise it on
                                                   exit.
  (usplash_write): Do not close FIFO, instead, take an additional file
                   descriptor pointer to it and open only when needed
                   (all callers changed).  Abort immediately on EINTR.
                   Bug fix:  Add NUL byte on single-word commands.
                   Ignore "interrupted_by_signal".
  (makeprompt, find_usplash): New; broken out from "main()".
  (find_usplash): Bug fix: close /proc/<pid>/cmdline FD on error.
  (main): Reorganized to jump to a new "failure" label on any error.
          Bug fix: check return values from sigaddset.
          New variable "usplash_accessed" to flag if usplash(8) needs
          to be killed and restarted.  Removed the "an_error_occured"
          variable.

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#!/bin/sh -e
 
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# This script will run in the initrd environment at boot and edit
 
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# /conf/conf.d/cryptroot to set /lib/mandos/plugin-runner as keyscript
 
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# when no other keyscript is set, before cryptsetup.
 
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# This script should be installed as
 
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# "/usr/share/initramfs-tools/scripts/init-premount/mandos" which will
 
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# eventually be "/scripts/init-premount/mandos" in the initrd.img
 
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# file.
 
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PREREQ="udev"
 
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prereqs()
 
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{
 
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    echo "$PREREQ"
 
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}
 
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case $1 in
 
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prereqs)
 
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        prereqs
 
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        exit 0
 
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        ;;
 
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esac
 
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. /scripts/functions
 
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for param in `cat /proc/cmdline`; do
 
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    case "$param" in
 
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        ip=*) IPOPTS="${param#ip=}" ;;
 
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        mandos=*)
 
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            # Split option line on commas
 
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            old_ifs="$IFS"
 
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            IFS="$IFS,"
 
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            for mpar in ${param#mandos=}; do
 
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                IFS="$old_ifs"
 
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                case "$mpar" in
 
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                    off) exit 0 ;;
 
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                    connect) connect="" ;;
 
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                    connect:*) connect="${mpar#connect:}" ;;
 
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                    *) log_warning_msg "$0: Bad option ${mpar}" ;;
 
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                esac
 
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            done
 
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            unset mpar
 
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            IFS="$old_ifs"
 
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            unset old_ifs
 
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            ;;
 
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    esac
 
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done
 
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unset param
 
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chmod a=rwxt /tmp
 
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test -r /conf/conf.d/cryptroot
 
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test -w /conf/conf.d
 
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# Get DEVICE from /conf/initramfs.conf and other files
 
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. /conf/initramfs.conf
 
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for conf in /conf/conf.d/*; do
 
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    [ -f ${conf} ] && . ${conf}
 
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done
 
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if [ -e /conf/param.conf ]; then
 
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    . /conf/param.conf
 
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fi
 
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# Override DEVICE from sixth field of ip= kernel option, if passed
 
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case "$IPOPTS" in
 
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    *:*:*:*:*:*)                # At least six fields
 
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        # Remove the first five fields
 
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        device="${IPOPTS#*:*:*:*:*:}"
 
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        # Remove all fields except the first one
 
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        DEVICE="${device%%:*}"
 
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        ;;
 
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esac
 
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# Add device setting (if any) to plugin-runner.conf
 
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if [ "${DEVICE+set}" = set ]; then
 
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    # Did we get the device from an ip= option?
 
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    if [ "${device+set}" = set ]; then
 
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        # Let ip= option override local config; append:
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--interface=${DEVICE}
 
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EOF
 
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    else
 
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        # Prepend device setting so any later options would override:
 
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        sed -i -e \
 
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            '1i--options-for=mandos-client:--interface='"${DEVICE}" \
 
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            /conf/conf.d/mandos/plugin-runner.conf
 
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    fi
 
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fi
 
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unset device
 
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# If we are connecting directly, run "configure_networking" (from
 
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# /scripts/functions); it needs IPOPTS and DEVICE
 
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if [ "${connect+set}" = set ]; then
 
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    configure_networking
 
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    if [ -n "$connect" ]; then
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--connect=${connect}
 
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EOF
 
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    fi
 
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fi
 
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# Do not replace cryptroot file unless we need to.
 
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replace_cryptroot=no
 
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# Our keyscript
 
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mandos=/lib/mandos/plugin-runner
 
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# parse /conf/conf.d/cryptroot.  Format:
 
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# target=sda2_crypt,source=/dev/sda2,key=none,keyscript=/foo/bar/baz
 
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exec 3>/conf/conf.d/cryptroot.mandos
 
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while read options; do
 
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    newopts=""
 
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    # Split option line on commas
 
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    old_ifs="$IFS"
 
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    IFS="$IFS,"
 
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    for opt in $options; do
 
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        # Find the keyscript option, if any
 
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        case "$opt" in
 
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            keyscript=*)
 
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                keyscript="${opt#keyscript=}"
 
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                newopts="$newopts,$opt"
 
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                ;;
 
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            "") : ;;
 
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            *)
 
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                newopts="$newopts,$opt"
 
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                ;;
 
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        esac
 
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    done
 
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    IFS="$old_ifs"
 
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    unset old_ifs
 
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    # If there was no keyscript option, add one.
 
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    if [ -z "$keyscript" ]; then
 
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        replace_cryptroot=yes
 
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        newopts="$newopts,keyscript=$mandos"
 
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    fi
 
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    newopts="${newopts#,}"
 
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    echo "$newopts" >&3
 
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done < /conf/conf.d/cryptroot
 
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exec 3>&-
 
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# If we need to, replace the old cryptroot file with the new file.
 
146
if [ "$replace_cryptroot" = yes ]; then
 
147
    mv /conf/conf.d/cryptroot /conf/conf.d/cryptroot.mandos-old
 
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    mv /conf/conf.d/cryptroot.mandos /conf/conf.d/cryptroot
 
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else
 
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    rm /conf/conf.d/cryptroot.mandos
 
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fi