overlay-squashfs-sparc/usr/sbin/sysresccd-custom

   1 #!/bin/bash
   2 # Project page: http://www.sysresccd.org/
   3 # By Francois Dupoux
   4 # (C) 2003-2007 Francois Dupoux
   5 # This scipt is available under the GPL-2 license.
   6
   7 ## HELP AND BASIC ARGUMENT PROCESSING
   8 #####################################
   9
  10 usage()
  11 {
  12   cat <<EOF
  13 sysresccd-custom: SystemRescueCd customization script for SPARC
  14 Syntax:           sysresccd-custom <command> ...
  15
  16 Please, read the manual for help about how to use this script.
  17 http://www.sysresccd.org/Sysresccd-manual-en_How_to_personalize_SystemRescueCd
  18
  19 Commands (execute in that order):
  20  1) extract                    Extract files from the squashfs into your hard disk
  21  2) squashfs                   Create the new compressed loopback squashfs filesystem
  22  3) setkmap <keymap-code>      Force a keymap to be loaded without prompt at startup
  23  4) isogen <cd_volume_name>    Generate the final bootable ISO image
  24
  25  -h|--help                     Display this screen
  26
  27 Copyright 2003-2007 Francois Dupoux. (http://www.sysresccd.org)
  28 Distributed under the GNU Public License version 2
  29 EOF
  30 }
  31
  32 ## MISC FUNCTIONS: Many utilities functions
  33 ###########################################
  34
  35 # show the error message ($1 = first line of the message)
  36 help_readman()
  37 {
  38         echo "$1"
  39         echo "Please, read the manual for more help about this script"
  40         echo "Web: http://www.sysresccd.org"
  41         exit 1
  42 }
  43
  44 ## Main
  45 ###########################################
  46
  47 if [ "$1" = "-h" ] || [ "$1" = "--help" ]
  48 then
  49         usage
  50         exit 1
  51 fi
  52
  53 if [ "`whoami`" != "root" ]
  54 then
  55         help_readman "$0: This script requires root privileges to operate."
  56         #exit 1
  57 fi
  58
  59 if [ ! -d "/mnt/custom" ]
  60 then
  61         help_readman "$0: You need to mount a partition with free space on /mnt/custom"
  62         exit 1
  63 fi
  64
  65 cat /proc/mounts | grep " /mnt/custom " > /dev/null
  66 if [ $? -eq 0 ]; then
  67         echo "/mnt/custom is mounted -> ok"
  68 else
  69         help_readman "$0: /mnt/custom is not mounted. Cannot continue."
  70         exit 1
  71 fi
  72
  73 PROG=${0}
  74 ISO_VOLUME="${2}"
  75 KEYMAP="${2}"
  76
  77 ## ERROR HANDLING
  78 #####################################
  79
  80 die()
  81 {
  82         if [ -n "$1" ]
  83         then
  84                 echo "${PROG}: error: $1"
  85         else
  86                 echo "${PROG}: aborting."
  87         fi
  88         exit 1
  89 }
  90
  91 extract_die()
  92 {
  93         if [ -n "$1" ]
  94         then
  95                 echo "do_extract: error: $1"
  96         else
  97                 echo "do_extract: aborting."
  98         fi
  99         exit 1
 100 }
 101
 102 squashfs_die()
 103 {
 104         #umount /mnt/custom/customcd/cloop/files/
 105         if [ -n "$1" ]
 106         then
 107                 echo "do_squashfs: error: $1"
 108         else
 109                 echo "do_squashfs: aborting."
 110         fi
 111         exit 1
 112 }
 113
 114 isogen_die()
 115 {
 116         if [ -n "$1" ]
 117         then
 118                 echo "do_isogen: error: $1"
 119         else
 120                 echo "do_isogen: aborting."
 121         fi
 122         exit 1
 123 }
 124
 125 setkmap_die()
 126 {
 127         if [ -n "$1" ]
 128         then
 129                 echo "do_setkmap: error: $1"
 130         else
 131                 echo "do_setkmap: aborting."
 132         fi
 133         exit 1
 134 }
 135
 136 ## MISC FUNCTIONS: Many utilities functions
 137 ###########################################
 138
 139 # $1 == MB required by the function
 140 check_freespace()
 141 {
 142         SIZE=`(\df -m -P) | grep " /mnt/custom$" | tail -n 1 | awk '{print $4}'`
 143
 144         if [ $SIZE -gt $1 ]; then
 145                 echo "there is enough estimated free space here ($SIZE MB) -> ok"
 146         else
 147                 echo "$PROG: not enough room in /mnt/custom"
 148                 help_readman "You only have $SIZE MB free, and the script needs at least $1 MB free"
 149                 exit 1
 150         fi
 151 }
 152
 153 # check the original SystemRescueCd disc is mounted
 154 check_origcdmounted()
 155 {
 156         grep docache /proc/cmdline > /dev/null
 157         if [ $? -eq 1 ]; then
 158                 echo "docache not used -> ok"
 159         fi
 160
 161         CMDLINE="`cat /proc/cmdline`"
 162         for x in $CMDLINE
 163         do
 164                 if [ "$x" = "docache" ]
 165                 then
 166                         docache_error=0
 167                         cat /proc/mounts | grep " /mnt/cdrom " > /dev/null
 168                         if [ $? -eq 1 ]; then
 169                                 docache_error=1
 170                         fi
 171
 172                         if [ $docache_error -eq 0 ]; then
 173                                 if [ ! -f /mnt/cdrom/sysrcd.dat ]; then
 174                                         docache_error=1
 175                                 fi
 176                                 if [ ! -d /mnt/cdrom/boot ]; then
 177                                         docache_error=1
 178                                 fi
 179                                 if [ ! -f /mnt/cdrom/boot/silo.conf ]; then
 180                                         docache_error=1
 181                                 fi
 182                         fi
 183
 184                         if [ $docache_error -eq 1 ]; then
 185                                 echo "$0: When using docache option you must mount the "
 186                                 help_readman "original version of SystemRescueCd."
 187                                 exit 1
 188                         else
 189                                 echo "docache used and original /mnt/cdrom is mounted -> ok"
 190                         fi
 191
 192                 fi
 193         done
 194 }
 195
 196 ## MAIN FUNCTIONS: Extracting the squashfs to the hard disk
 197 ########################################################
 198 do_extract_check()
 199 {
 200         # check for free space
 201         check_freespace 500
 202 }
 203
 204 do_extract()
 205 {
 206         # check the original cd is mounted
 207         check_origcdmounted
 208
 209         # copy the boot files
 210         mkdir -p /mnt/custom/customcd/isoroot/
 211         rm -rf /mnt/custom/customcd/isoroot/*
 212         cp -a /mnt/cdrom/boot /mnt/custom/customcd/isoroot/ || extract_die
 213
 214         # extract files
 215         mkdir -p /mnt/custom/customcd/files/
 216         rm -rf /mnt/custom/customcd/files/*
 217         cp -dpR /mnt/livecd/* /mnt/custom/customcd/files/ || extract_die
 218 }
 219
 220 ## MAIN FUNCTIONS: Create the new squashfs image from files
 221 ########################################################
 222 do_squashfs()
 223 {
 224         # check for free space
 225         check_freespace 350
 226
 227         mkdir -p /mnt/custom/customcd/
 228         mkdir -p /mnt/custom/customcd/files/
 229         mkdir -p /mnt/custom/customcd/isoroot/
 230         touch "/mnt/custom/customcd/files/customized"
 231
 232         mksquashfs /mnt/custom/customcd/files/ /mnt/custom/customcd/isoroot/sysrcd.dat || squashfs_die
 233         (cd /mnt/custom/customcd/isoroot/ ; md5sum sysrcd.dat > sysrcd.md5)
 234
 235         # Change permissions to allow the file to be sent by thttpd for PXE-boot
 236         chmod 666 /mnt/custom/customcd/isoroot/sysrcd.dat
 237         chmod 666 /mnt/custom/customcd/isoroot/sysrcd.md5
 238 }
 239
 240 ## MAIN FUNCTIONS: Force a keymap to be loaded without prompt
 241 ########################################################
 242 do_setkmap()
 243 {
 244         if [ "$KEYMAP" = "" ]
 245         then
 246                 usage
 247                 setkmap_die
 248         fi
 249
 250         if [ ! -d "/mnt/custom/customcd/isoroot/boot" ]
 251         then
 252                 help_readman "$PROG: You have to run command prepiso before setkmap"
 253                 exit 1
 254         fi
 255
 256         echo "Keymap to be loaded: ${KEYMAP}"
 257
 258         # Set keymap in silo.conf
 259         cp /mnt/custom/customcd/isoroot/boot/silo.conf /mnt/custom/customcd/isoroot/boot/silo.bak
 260         sed -e "s:append:append setkmap=${KEYMAP}:g" /mnt/custom/customcd/isoroot/boot/silo.bak > /mnt/custom/customcd/isoroot/boot/silo.conf
 261 }
 262
 263 ## MAIN FUNCTIONS: Create the new ISO image
 264 ########################################################
 265 do_isogen()
 266 {
 267         # check for free space
 268         check_freespace 200
 269
 270         if [ "$ISO_VOLUME" = "" ]
 271         then
 272                 usage
 273                 isogen_die
 274         fi
 275
 276         mkdir -p /mnt/custom/customcd/isofile/
 277         rm -rf /mnt/custom/customcd/isofile/*
 278
 279         if [ ! -d "/mnt/custom/customcd/isoroot/boot" ]
 280         then
 281                 help_readman "$PROG: You have to run command squashfs before isogen"
 282                 exit 1
 283         fi
 284
 285         touch "/mnt/custom/customcd/isoroot/customized"
 286
 287         echo "Volume name of the CDRom: ${ISO_VOLUME}"
 288
 289         mkisofs -G /boot/isofs.b -J -V "${ISO_VOLUME}" -B ... -r \
 290                 -o /mnt/custom/customcd/isofile/sysresccd-new.iso \
 291                 /mnt/custom/customcd/isoroot || isogen_die
 292
 293         md5sum /mnt/custom/customcd/isofile/sysresccd-new.iso > /mnt/custom/customcd/isofile/sysresccd-new.md5
 294
 295         echo "Final ISO image: /mnt/custom/customcd/isofile/sysresccd-new.iso"
 296 }
 297
 298
 299 ## MAIN SHELL FUNCTION
 300 ########################################################
 301
 302 case "$1" in
 303     extract)
 304         do_extract_check
 305         do_extract;;
 306     extract-nosizecheck)
 307         do_extract;;
 308     squashfs)
 309         do_squashfs;;
 310     setkmap)
 311         do_setkmap;;
 312     isogen)
 313         do_isogen;;
 314     *)
 315         usage
 316         exit 1
 317         ;;
 318 esac
 319 exit 0