etc/rc.d/gbde

   1 #!/bin/sh
   2 #
   3 # This file, originally written by Garrett A. Wollman, is in the public
   4 # domain.
   5 #
   6 # $FreeBSD$
   7 #
   8
   9 # PROVIDE: disks
  10 # KEYWORD: nojail
  11
  12 . /etc/rc.subr
  13
  14 name="gbde"
  15 start_precmd="find_gbde_devices start"
  16 stop_precmd="find_gbde_devices stop"
  17 start_cmd="gbde_start"
  18 stop_cmd="gbde_stop"
  19
  20 # Change every ${_src} in ${_str} to ${_dst}.
  21 # We cannot use tr(1), sed(1) nor awk(1) here, because this script is executed
  22 # before /usr is mounted.
  23 local_tr()
  24 {
  25         _str=$1
  26         _src=$2
  27         _dst=$3
  28         _out=""
  29
  30         IFS=${_src}
  31         for _com in ${_str}; do
  32                 if [ -z "${_out}" ]; then
  33                         _out="${_com}"
  34                 else
  35                         _out="${_out}${_dst}${_com}"
  36                 fi
  37         done
  38         echo "${_out}"
  39 }
  40
  41 find_gbde_devices()
  42 {
  43         case "${gbde_devices-auto}" in
  44         [Aa][Uu][Tt][Oo])
  45                 gbde_devices=""
  46                 ;;
  47         *)
  48                 return 0
  49                 ;;
  50         esac
  51
  52         case "$1" in
  53         start)
  54                 fstab="/etc/fstab"
  55                 ;;
  56         stop)
  57                 fstab=$(mktemp /tmp/mtab.XXXXXX)
  58                 mount -p >${fstab}
  59                 ;;
  60         esac
  61
  62         #
  63         # We can't use "mount -p | while ..." because when a shell loop
  64         # is the target of a pipe it executes in a subshell, and so can't
  65         # modify variables in the script.
  66         #
  67         while read device mountpt type options dump pass; do
  68                 case "$device" in
  69                 *.bde)
  70                         # Ignore swap devices
  71                         case "$type" in
  72                         swap)
  73                                 continue
  74                                 ;;
  75                         esac
  76
  77                         case "$options" in
  78                         *noauto*)
  79                                 if checkyesno gbde_autoattach_all; then
  80                                         gbde_devices="${gbde_devices} ${device}"
  81                                 fi
  82                                 ;;
  83                         *)
  84                                 gbde_devices="${gbde_devices} ${device}"
  85                                 ;;
  86                         esac
  87                         ;;
  88                 esac
  89         done <${fstab}
  90
  91         case "$1" in
  92         stop)
  93                 rm -f ${fstab}
  94                 ;;
  95         esac
  96
  97         return 0
  98 }
  99
 100 gbde_start()
 101 {
 102         for device in $gbde_devices; do
 103                 parent=${device%.bde}
 104                 parent=${parent#/dev/}
 105                 parent_=`local_tr ${parent} '/' '_'`
 106                 eval "lock=\${gbde_lock_${parent_}-\"${gbde_lockdir}/${parent_}.lock\"}"
 107                 if [ -e "/dev/${parent}" -a ! -e "/dev/${parent}.bde" ]; then
 108                         echo "Configuring Disk Encryption for ${parent}."
 109
 110                         count=1
 111                         while [ ${count} -le ${gbde_attach_attempts} ]; do
 112                                 if [ -e "${lock}" ]; then
 113                                         gbde attach ${parent} -l ${lock}
 114                                 else
 115                                         gbde attach ${parent}
 116                                 fi
 117                                 if [ -e "/dev/${parent}.bde" ]; then
 118                                         break
 119                                 fi
 120                                 echo "Attach failed; attempt ${count} of ${gbde_attach_attempts}."
 121                                 count=$((${count} + 1))
 122                         done
 123                 fi
 124         done
 125 }
 126
 127 gbde_stop()
 128 {
 129         for device in $gbde_devices; do
 130                 parent=${device%.bde}
 131                 parent=${parent#/dev/}
 132                 if [ -e "/dev/${parent}.bde" ]; then
 133                         umount "/dev/${parent}.bde" 2>/dev/null
 134                         gbde detach "${parent}"
 135                 fi
 136         done
 137 }
 138
 139 load_rc_config $name
 140 run_rc_command "$1"