scripts/boot/toram-todisk.sh

   1 #!/bin/sh
   2
   3 copy_live_to ()
   4 {
   5         copyfrom="${1}"
   6         copytodev="${2}"
   7         copyto="${copyfrom}_swap"
   8
   9         if [ -z "${MODULETORAM}" ]
  10         then
  11                 size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
  12         else
  13                 MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
  14
  15                 if [ -f "${MODULETORAMFILE}" ]
  16                 then
  17                         size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
  18                 else
  19                         log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
  20                         return 1
  21                 fi
  22         fi
  23
  24         if [ "${copytodev}" = "ram" ]
  25         then
  26                 # copying to ram:
  27                 freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
  28                 mount_options="-o size=${size}k"
  29                 free_string="memory"
  30                 fstype="tmpfs"
  31                 dev="/dev/shm"
  32         else
  33                 # it should be a writable block device
  34                 if [ -b "${copytodev}" ]
  35                 then
  36                         dev="${copytodev}"
  37                         free_string="space"
  38                         fstype=$(get_fstype "${dev}")
  39                         freespace=$(fs_size "${dev}")
  40                 else
  41                         log_warning_msg "${copytodev} is not a block device."
  42                         return 1
  43                 fi
  44         fi
  45
  46         if [ "${freespace}" -lt "${size}" ]
  47         then
  48                 log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
  49                 return 1
  50         fi
  51
  52         # Custom ramdisk size
  53         if [ -z "${mount_options}" ] && [ -n "${ramdisk_size}" ]
  54         then
  55                 # FIXME: should check for wrong values
  56                 mount_options="-o size=${ramdisk_size}"
  57         fi
  58
  59         # begin copying (or uncompressing)
  60         mkdir "${copyto}"
  61         log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
  62         mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
  63
  64         if [ "${extension}" = "tgz" ]
  65         then
  66                 cd "${copyto}"
  67                 tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
  68                 rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
  69                 mount -r -o move "${copyto}" "${rootmnt}"
  70                 cd "${OLDPWD}"
  71         else
  72                 if [ -n "${MODULETORAMFILE}" ]
  73                 then
  74                         if [ -x /bin/rsync ]
  75                         then
  76                                 echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
  77                                 rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
  78                         else
  79                                 cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
  80                         fi
  81                 else
  82                         if [ -x /bin/rsync ]
  83                         then
  84                                 echo " * Copying whole medium to RAM" 1>/dev/console
  85                                 rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console  # "cp -a" from busybox also copies hidden files
  86                         else
  87                                 mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
  88                                 cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
  89                                 if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
  90                                 then
  91                                         cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
  92                                 fi
  93                         fi
  94                 fi
  95
  96                 umount ${copyfrom}
  97                 mount -r -o move ${copyto} ${copyfrom}
  98         fi
  99
 100         rmdir ${copyto}
 101         return 0
 102 }