etc/rc.cd

   1 #!/bin/sh
   2
   3 # CD boottime initializations.
   4
   5 echo -n "Creating ramdisks:"
   6
   7 # Set up a ramdisk to make a read-only part of the directory tree writable
   8 # $1 : ramdisk dev node to use
   9 # $2 : path to make writeable
  10 # $3 : ramdisk size in blocks
  11 create_ramdisk()
  12 {
  13         echo -n " $2"
  14         ramdisk $3 /dev/$1 > /dev/null
  15         mkfs.mfs /dev/$1 > /dev/null
  16
  17         # copy files
  18         mount /dev/$1 /mnt > /dev/null
  19         (cd $2 && pax -rw . /mnt)
  20
  21         umount /mnt > /dev/null
  22         mount /dev/$1 $2 > /dev/null
  23 }
  24
  25 # Create /var ramdisk
  26 create_ramdisk ram0 /var 768
  27 create_ramdisk ram1 /tmp 128
  28 create_ramdisk ram2 /usr/run 64
  29 create_ramdisk ram3 /root 512
  30
  31 echo