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 local_tr()
  22 {
  23         _str=$1
  24         _src=$2
  25         _dst=$3
  26         _out=""
  27
  28         IFS=${_src}
  29         for _com in ${_str}; do
  30                 if [ -z "${_out}" ]; then
  31                         _out="${_com}"
  32                 else
  33                         _out="${_out}${_dst}${_com}"
  34                 fi
  35         done
  36         echo "${_out}"
  37 }
  38
  39 find_gbde_devices()
  40 {
  41         case "${gbde_devices-auto}" in
  42         [Aa][Uu][Tt][Oo])
  43                 gbde_devices=""
  44                 ;;
  45         *)
  46                 return 0
  47                 ;;
  48         esac
  49
  50         case "$1" in
  51         start)
  52                 fstab="/etc/fstab"
  53                 ;;
  54         stop)
  55                 fstab=$(mktemp /tmp/mtab.XXXXXX)
  56                 mount -p >${fstab}
  57                 ;;
  58         esac
  59
  60         #
  61         # We can't use "mount -p | while ..." because when a shell loop
  62         # is the target of a pipe it executes in a subshell, and so can't
  63         # modify variables in the script.
  64         #
  65         while read device mountpt type options dump pass; do
  66                 case "$device" in
  67                 *.bde)
  68                         # Ignore swap devices
  69                         case "$type" in
  70                         swap)
  71                                 continue
  72                                 ;;
  73                         esac
  74
  75                         case "$options" in
  76                         *noauto*)
  77                                 if checkyesno gbde_autoattach_all; then
  78                                         gbde_devices="${gbde_devices} ${device}"
  79                                 fi
  80                                 ;;
  81                         *)
  82                                 gbde_devices="${gbde_devices} ${device}"
  83                                 ;;
  84                         esac
  85                         ;;
  86                 esac
  87         done <${fstab}
  88
  89         case "$1" in
  90         stop)
  91                 rm -f ${fstab}
  92                 ;;
  93         esac
  94
  95         return 0
  96 }
  97
  98 gbde_start()
  99 {
 100         for device in $gbde_devices; do
 101                 parent=${device%.bde}
 102                 parent=${parent#/dev/}
 103                 parent_=`local_tr ${parent} '/' '_'`
 104                 eval "lock=\${gbde_lock_${parent_}-\"${gbde_lockdir}/${parent_}.lock\"}"
 105                 if [ -e "/dev/${parent}" -a ! -e "/dev/${parent}.bde" ]; then
 106                         echo "Configuring Disk Encryption for ${parent}."
 107
 108                         count=1
 109                         while [ ${count} -le ${gbde_attach_attempts} ]; do
 110                                 if [ -e "${lock}" ]; then
 111                                         gbde attach ${parent} -l ${lock}
 112                                 else
 113                                         gbde attach ${parent}
 114                                 fi
 115                                 if [ -e "/dev/${parent}.bde" ]; then
 116                                         break
 117                                 fi
 118                                 echo "Attach failed; attempt ${count} of ${gbde_attach_attempts}."
 119                                 count=$((${count} + 1))
 120                         done
 121                 fi
 122         done
 123 }
 124
 125 gbde_stop()
 126 {
 127         for device in $gbde_devices; do
 128                 parent=${device%.bde}
 129                 parent=${parent#/dev/}
 130                 if [ -e "/dev/${parent}.bde" ]; then
 131                         umount "/dev/${parent}.bde" 2>/dev/null
 132                         gbde detach "${parent}"
 133                 fi
 134         done
 135 }
 136
 137 load_rc_config $name
 138 run_rc_command "$1"