filesystem/rc

   1 #!/bin/sh
   2
   3 #
   4 # initramfs /init (busybox ash)
   5 #
   6
   7 # color codes and some predefined texts
   8 BOLD="\033[1m"
   9 NORM="\033[0m"
  10 RED="\033[31m"
  11 GREEN="\033[32m"
  12 YELLOW="\033[33m"
  13 BLUE="\033[34m"
  14 OK="${BOLD}${GREEN}OK${NORM}"
  15 FAILED="${BOLD}${RED}FAILED${NORM}"
  16
  17 # helper functions
  18
  19 # check an exit value and print a colored status
  20 checkReturn() {
  21         if [ $? -ne 0 ]
  22         then
  23                 echo -e $FAILED
  24         else
  25                 echo -e $OK
  26         fi
  27 }
  28
  29 # search for and mount the crux media, populate a tmpfs from it,
  30 # and prepare /newroot for switch_root at the end of the script
  31 find_and_mount_media() {
  32         echo -e " ${BOLD}${BLUE}*${NORM} Searching for the CRUX media..."
  33         mkdir -p /media
  34         CRUXMEDIA=""
  35         MMC_DEVICES="`grep -E 'mmcblk0p' /proc/partitions | awk '{ print $4 }'`"
  36         BLOCK_DEVICES="`grep -E '[sh]d' /proc/partitions | awk '{ print $4 }'`"
  37         for DEV in $MMC_DEVICES $BLOCK_DEVICES
  38         do
  39                 DEV="/dev/$DEV"
  40                 mount -r $DEV /media 2> /dev/null
  41                 if [ $? -eq 0 ]
  42                         then
  43                         echo -e -n "   ${BOLD}${GREEN}*${NORM} Found media on $DEV"
  44                         if [ -e /media/crux-media ]
  45                         then
  46                                 echo ", CRUX media."
  47                                 CRUXMEDIA=$DEV
  48                                 ln -s $DEV /dev/media
  49                                 break
  50                         else
  51                                 echo ", but it's not the CRUX media."
  52                                 umount /media
  53                         fi
  54                 else
  55                         echo -e "   ${BOLD}${YELLOW}*${NORM} No media found on $DEV."
  56                 fi
  57         done
  58
  59         # check if the media was mounted properly. if not, spawn a shell
  60         if [ ! -e /media/crux-media ]
  61         then
  62                 echo
  63                 echo -e " ${BOLD}${RED}*${NORM} The CRUX media was not properly mounted!"
  64                 echo " Spawning a shell for you to attempt to fix this problem. If"
  65                 echo " you are able to find the correct device, mount it at"
  66                 echo " /media and then log out of this shell to continue."
  67                 echo " If you are NOT able to fix the problem, installation will"
  68                 echo " not be possible."
  69                 echo
  70                 /bin/sh
  71         fi
  72
  73         # check again and stop if it's still not there
  74         if [ ! -e /media/crux-media ]
  75         then
  76                 echo
  77                 echo -e " ${BOLD}${RED}*${NORM} The CRUX media still appears not to be"
  78                 echo " found and installation will not continue."
  79                 echo
  80         else
  81                 # configure modules
  82                 MODULES="`find /media/crux/kernel -type f -name 'modules-*.tar.*' 2>/dev/null`"
  83                 if [ ! -z "$MODULES" ]; then
  84                         tar -C /tmp -xf $MODULES
  85                         cd /lib && ln -s /tmp/lib/* .
  86                         depmod
  87                 fi
  88                 # configure pkgutils
  89                 PKGUTILS="`find /media/crux/core -type f -name 'pkgutils#*.pkg.tar.*' 2>/dev/null`"
  90                 if [ ! -z "$PKGUTILS" ]; then
  91                         tar -C /tmp -xf $PKGUTILS
  92                         cd /usr/bin && ln -s /tmp/usr/bin/* .
  93                         cd /etc && ln -s /tmp/etc/* .
  94                 fi
  95         fi
  96 }
  97
  98 #
  99 # main script
 100 #
 101
 102 echo ""
 103 echo -e "${BOLD}CRUX-ARM 3.0 - ${BLUE}http://crux-arm.nu/${NORM}"
 104 echo ""
 105
 106 exec >/dev/console </dev/console 2>&1
 107
 108 echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting filesystems... "
 109 mount -a && \
 110 mount -o remount,rw /
 111 checkReturn
 112
 113 echo -e -n " ${BOLD}${BLUE}*${NORM} Populating /dev via mdev... "
 114 mdev -s
 115 checkReturn
 116
 117 echo -e -n " ${BOLD}${BLUE}*${NORM} Registering mdev as hotplug agent... "
 118 echo "/bin/mdev" > /proc/sys/kernel/hotplug
 119 checkReturn
 120
 121 echo -e -n " ${BOLD}${BLUE}*${NORM} Creating and mounting /dev/pts... "
 122 mkdir /dev/pts
 123 mount -t devpts devpts /dev/pts
 124 checkReturn
 125
 126 echo -e -n " ${BOLD}${BLUE}*${NORM} Starting kernel log daemon... "
 127 klogd
 128 checkReturn
 129
 130 echo -e -n " ${BOLD}${BLUE}*${NORM} Setting hostname... "
 131 hostname crux
 132 checkReturn
 133
 134 echo -e -n " ${BOLD}${BLUE}*${NORM} Loading network loopback device... "
 135 ip addr add 127.0.0.1/8 dev lo broadcast + scope host && \
 136 ip link set lo up && \
 137 echo "127.0.0.1 localhost crux" > /etc/hosts
 138 checkReturn
 139
 140 echo -e -n " ${BOLD}${BLUE}*${NORM} Saving boot messages... "
 141 dmesg > /var/log/boot
 142 checkReturn
 143
 144 echo -e " ${BOLD}${BLUE}*${NORM} Trying to find and mount the media installer..."
 145 find_and_mount_media
 146
 147 if grep -q debug /proc/cmdline; then
 148         echo -e -n " ${BOLD}${BLUE}*${NORM} Loading debug script..."
 149         /media/debug.sh
 150         checkReturn
 151 fi
 152
 153 echo
 154 echo "The system is coming up. Please wait."
 155 echo
 156
 157 # End of file