debian/openafs-client-precheck

   1 #! /bin/sh
   2 # Copyright (C) 2014 by Benjamin Kaduk
   3 # All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions
   7 # are met:
   8 #
   9 # * Redistributions of source code must retain the above copyright
  10 #   notice, this list of conditions and the following disclaimer.
  11 #
  12 # * Redistributions in binary form must reproduce the above copyright
  13 #   notice, this list of conditions and the following disclaimer in
  14 #   the documentation and/or other materials provided with the
  15 #   distribution.
  16 #
  17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20 # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21 # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  22 # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  28 # OF THE POSSIBILITY OF SUCH DAMAGE.
  29 PATH=/bin:/usr/bin:/sbin:/usr/sbin
  30
  31 # Gather up options and post startup script name, if present
  32 if [ -f /etc/openafs/afs.conf ]; then
  33     . /etc/openafs/afs.conf
  34 fi
  35
  36 CACHEINFO=${CACHEINFO:-/etc/openafs/cacheinfo}
  37 MODULEROOT=${MODULEROOT:-/lib/modules/`uname -r`}
  38
  39 do_nothing_env() {
  40     cat > /var/cache/openafs-client/openafs-client.env <<EOF
  41 AFSD_ARGS=-help
  42 AFS_SETCRYPT=-help
  43 AFS_SYSNAME=-help
  44 KMOD=--version
  45 EOF
  46 }
  47
  48 # Exit if the package is not installed.
  49 [ -x /sbin/afsd ] || exit 1
  50
  51 # Do some other checks for prerequisites
  52 if ! [ -f "${CACHEINFO}" ]; then
  53     echo "required cacheinfo file does not exist" >&2
  54     exit 1
  55 fi
  56 if ! [ -d "$(awk -F : '{print $1}' < "${CACHEINFO}")" ]; then
  57     echo "AFS mountpoint is not a directory or does not exist" >&2
  58     exit 1
  59 fi
  60 if pidof /sbin/afsd || pidof /usr/sbin/afsd; then
  61     echo "afsd is already running, continuing" >&2
  62     do_nothing_env
  63     exit 0
  64 fi
  65
  66 # Ensure that the kernel module is loaded.
  67 if ! /sbin/lsmod | grep -Fq openafs; then
  68     modprobe openafs
  69     status=$?
  70
  71     if [ $status -ne 0 ] ; then
  72         echo "Failed to load openafs.ko.  Does it need to be built?" >&2
  73         # We cannot fail hard on a missing module, though, as that will
  74         # cause our unit to be put in a disabled state.
  75         if grep -q openafs "$MODULEROOT/modules.dep"; then
  76             exit $status
  77         else
  78             do_nothing_env
  79             exit 0
  80         fi
  81     fi
  82 fi
  83
  84 # Determine which afsd options to use.  /etc/openafs/afs.conf contains the
  85 # settings that are checked here.
  86 if [ -z "$OPTIONS" ] || [ "$OPTIONS" = "AUTOMATIC" ] ; then
  87     AFSD_OPTIONS="$VERBOSE"
  88 else
  89     AFSD_OPTIONS="$OPTIONS $VERBOSE"
  90 fi
  91
  92 # These variables are from /etc/openafs/afs.conf.client and are managed
  93 # automatically by debconf.
  94 case "$AFS_AFSDB" in
  95 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee])
  96     AFSD_OPTIONS="$AFSD_OPTIONS -afsdb"
  97 esac
  98 case "$AFS_DYNROOT" in
  99 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee])
 100     AFSD_OPTIONS="$AFSD_OPTIONS -dynroot"
 101     ;;
 102 [Ss][Pp][Aa][Rr][Ss][Ee])
 103     AFSD_OPTIONS="$AFSD_OPTIONS -dynroot-sparse"
 104 esac
 105 case "$AFS_FAKESTAT" in
 106 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee])
 107     AFSD_OPTIONS="$AFSD_OPTIONS -fakestat"
 108 esac
 109
 110 case "$AFS_CRYPT" in
 111 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee])
 112     AFS_SETCRYPT=on
 113     ;;
 114 *)
 115     AFS_SETCRYPT=off
 116 esac
 117
 118 # Generate an EnvironmentFile for use by systemd.
 119 cat > /var/cache/openafs-client/openafs-client.env <<EOF
 120 AFSD_ARGS=${AFSD_OPTIONS}
 121 AFS_SETCRYPT=${AFS_SETCRYPT}
 122 AFS_SYSNAME=${AFS_SYSNAME}
 123 KMOD=openafs
 124 EOF