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  • Committer: Teddy Hogeborn
  • Date: 2016-06-03 17:27:03 UTC
  • Revision ID: teddy@recompile.se-20160603172703-mc6tjor6rhq4xy74
mandos: Bug fix: Do multiprocessing cleanup correctly on exit

* mandos (main): Save module "multiprocessing" and open file "wnull"
                 as scope variables accessible by function cleanup(),
                 since the module and global variable may not be
                 accessible when the cleanup() function is run as
                 scheduled by atexit().

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#!/bin/sh
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#
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# This file should be present in the root file system directory
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# /usr/lib/dracut/modules.d/90mandos.  When dracut creates the
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# initramfs image, dracut will run the "module-setup.sh" file in the
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# same directory, which (when *not* using the "systemd" dracut module)
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# will copy this file ("cmdline-mandos.sh") into the initramfs as
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# "/lib/dracut/hooks/cmdline/20-cmdline-mandos.sh".
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# Despite the above #!/bin/sh line and the executable flag, this file
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# is not executed; this file is sourced by the /init script in the
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# initramfs image created by dracut.
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if getargbool 1 mandos && [ -e /lib/dracut-crypt-lib.sh ]; then
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    cat >> /lib/dracut-crypt-lib.sh <<- "EOF"
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        ask_for_password(){
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            local cmd; local prompt; local tries=3
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            local ply_cmd; local ply_prompt; local ply_tries=3
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            local tty_cmd; local tty_prompt; local tty_tries=3
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            local ret
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            while [ $# -gt 0 ]; do
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                case "$1" in
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                    --cmd) ply_cmd="$2"; tty_cmd="$2"; shift;;
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                    --ply-cmd) ply_cmd="$2"; shift;;
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                    --tty-cmd) tty_cmd="$2"; shift;;
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                    --prompt) ply_prompt="$2"; tty_prompt="$2"; shift;;
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                    --ply-prompt) ply_prompt="$2"; shift;;
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                    --tty-prompt) tty_prompt="$2"; shift;;
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                    --tries) ply_tries="$2"; tty_tries="$2"; shift;;
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                    --ply-tries) ply_tries="$2"; shift;;
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                    --tty-tries) tty_tries="$2"; shift;;
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                    --tty-echo-off) tty_echo_off=yes;;
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                    -*) :;;
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                esac
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                shift
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            done
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            if [ -z "$ply_cmd" ]; then
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                ply_cmd="$tty_cmd"
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            fi
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            # Extract device and luksname from $ply_cmd
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            set -- $ply_cmd
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            shift
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            for arg in "$@"; do
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                case "$arg" in
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                    -*) :;;
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                    *)
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                        if [ -z "$device" ]; then
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                            device="$arg"
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                        else
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                            luksname="$arg"
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                            break
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                        fi
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                        ;;
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                esac
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            done
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            { flock -s 9;
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              if [ -z "$ply_prompt" ]; then
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                  if [ -z "$tty_prompt" ]; then
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                      CRYPTTAB_SOURCE="$device" cryptsource="$device" CRYPTTAB_NAME="$luksname" crypttarget="$luksname" /lib/mandos/plugin-runner --config-file=/etc/mandos/plugin-runner.conf | $ply_cmd
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                  else
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                      CRYPTTAB_SOURCE="$device" cryptsource="$device" CRYPTTAB_NAME="$luksname" crypttarget="$luksname" /lib/mandos/plugin-runner --options-for=password-prompt:--prompt="${tty_prompt}" --config-file=/etc/mandos/plugin-runner.conf | $ply_cmd
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                  fi
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              else
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                  if [ -z "$tty_prompt" ]; then
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                      CRYPTTAB_SOURCE="$device" cryptsource="$device" CRYPTTAB_NAME="$luksname" crypttarget="$luksname" /lib/mandos/plugin-runner --options-for=plymouth:--prompt="${ply_prompt}" --config-file=/etc/mandos/plugin-runner.conf | $ply_cmd
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                  else
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                      CRYPTTAB_SOURCE="$device" cryptsource="$device" CRYPTTAB_NAME="$luksname" crypttarget="$luksname" /lib/mandos/plugin-runner --options-for=password-prompt:--prompt="${tty_prompt}" --options-for=plymouth:--prompt="${ply_prompt}" --config-file=/etc/mandos/plugin-runner.conf | $ply_cmd
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                  fi
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              fi
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            } 9>/.console_lock
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        }
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        EOF
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fi