etc/rc.d/addswap

   1 #!/bin/sh
   2 #
   3 # Add additional swap files
   4 #
   5 # $FreeBSD$
   6 #
   7
   8 # PROVIDE: addswap
   9 # REQUIRE: FILESYSTEMS kld
  10 # BEFORE:  netif
  11 # KEYWORD: nojail shutdown
  12
  13 . /etc/rc.subr
  14
  15 name="addswap"
  16 start_cmd="addswap_start"
  17 stop_cmd="addswap_stop"
  18
  19 addswap_start()
  20 {
  21         case ${swapfile} in
  22         [Nn][Oo] | '')
  23                 ;;
  24         *)
  25                 if [ -w "${swapfile}" ]; then
  26                         check_startmsgs && echo "Adding ${swapfile} as additional swap"
  27
  28                         if [ -n "${swapfile_mdunit}" ]; then
  29                                 mdev="/dev/md${swapfile_mdunit#md}"
  30                                 mdconfig -a -t vnode -f "${swapfile}" -u ${swapfile_mdunit}
  31                         else
  32                                 mdev="/dev/`mdconfig -a -t vnode -f "${swapfile}"`"
  33                         fi
  34
  35                         if [ $? -eq 0 ]; then
  36                                 swapon ${mdev}
  37                         else
  38                                 echo "error creating swapfile device"
  39                         fi
  40                 fi
  41                 ;;
  42         esac
  43 }
  44
  45 addswap_stop()
  46 {
  47         case ${swapfile} in
  48         [Nn][Oo] | '')
  49                 ;;
  50         *)
  51                 if [ -n "${swapfile_mdunit}" ]; then
  52                         mdev="/dev/md${swapfile_mdunit#md}"
  53                 else
  54                         mdev="/dev/`mdconfig -lv | grep "${swapfile}" | cut -f1`"
  55                         swapfile_mdunit=${mdev#md}
  56                 fi
  57                 if [ -n "${swapfile_mdunit}" ]; then
  58                         swapctl -l | grep -q ${mdev}
  59                         if [ $? -eq 0 ]; then
  60                                 echo "Dismounting swapfile ${swapfile}"
  61                                 swapoff ${mdev} && mdconfig -d -u ${swapfile_mdunit}
  62                         fi
  63                 fi
  64                 ;;
  65         esac
  66 }
  67
  68 load_rc_config $name
  69 run_rc_command "$1"