zfcpdump/ramdisk/create_rd.sh

   1 #!/bin/sh
   2 #
   3 #  Shell script to build and install the zfcpdump ramdisk
   4 #
   5 #  > create_rd.sh (ARCH) : build ramdisk
   6 #  > create_rd.sh -r     : cleanup
   7 #  > create_rd.sh -i     : install files
   8 #
   9 #  Copyright IBM Corp. 2003, 2006.
  10 #  Author(s): Michael Holzheu <holzheu@de.ibm.com>
  11 #
  12
  13 . ../config
  14
  15 E2FS_PROGS="../extern/$E2FS_PROGS_TARBALL"
  16 EXT2_RD_FREE_SIZE=200
  17
  18 RD_TMP=rd
  19 RD_IMAGE=ramdisk.dump
  20 DIR_LIST="sbin \
  21           dev \
  22           proc \
  23           etc \
  24           mnt \
  25           sys "
  26
  27 #
  28 # check() function to check error codes
  29 #
  30 function check ()
  31 {
  32         if [ $? != 0 ]
  33         then
  34                 echo "failed"
  35                 exit 1
  36         else
  37                 echo "ok"
  38         fi
  39 }
  40
  41 #
  42 # build(): build the ramdisk
  43 #
  44
  45 function build ()
  46 {
  47         echo "build: `date`"
  48
  49         echo "==============================================================="
  50         echo "Removing old installation"
  51         echo "==============================================================="
  52         rm -rf $RD_TMP
  53         echo "ok"
  54
  55         echo "==============================================================="
  56         echo "Creating RD dir structure"
  57         echo "==============================================================="
  58         mkdir $RD_TMP
  59         for i in $DIR_LIST
  60         do
  61                 mkdir "$RD_TMP/$i"
  62         done
  63         check
  64
  65         #
  66         # Build e2fsprogs
  67         #
  68
  69         if [ ! -f e2fsprogs-$E2FS_PROGS_VERSION/e2fsck/e2fsck ]
  70         then
  71                 echo "==============================================================="
  72                 echo "Extracting E2FSPROGS"
  73                 echo "==============================================================="
  74                 tar xfzv $E2FS_PROGS
  75                 check
  76                 echo "==============================================================="
  77                 echo "Compiling E2FSPROGS"
  78                 echo "==============================================================="
  79                 cd e2fsprogs-$E2FS_PROGS_VERSION
  80                 ./configure
  81                 make
  82                 check
  83                 cd ..
  84         fi
  85         echo "==============================================================="
  86         echo "Installing e2fsck"
  87         echo "==============================================================="
  88         strip e2fsprogs-$E2FS_PROGS_VERSION/e2fsck/e2fsck
  89         cp e2fsprogs-$E2FS_PROGS_VERSION/e2fsck/e2fsck $RD_TMP/sbin
  90         check
  91
  92         #
  93         # copy additional files
  94         #
  95
  96         strip zfcp_dumper
  97         cp zfcp_dumper $RD_TMP/sbin/init
  98         ln -s /proc/mounts "$RD_TMP/etc/mtab"
  99
 100         #
 101         # create ramdisk
 102         #
 103
 104         echo "==============================================================="
 105         echo "Creating ramdisk ($RD_FS)"
 106         echo "==============================================================="
 107
 108         if [ "$RD_FS" == "romfs" ]
 109         then
 110                 printf "%-30s: " "Creating romfs"
 111                 genromfs -f $ZFCPDUMP_RD -d $RD_TMP
 112                 check
 113                 printf "%-30s: " "zip romfs"
 114                 gzip $ZFCPDUMP_RD
 115                 check
 116                 mv "$ZFCPDUMP_RD.gz" $ZFCPDUMP_RD
 117         elif [ "$RD_FS" == "ext2" ]
 118         then
 119                 RD_MIN_SIZE=`du -k -s $RD_TMP | awk '{print $1}'`
 120                 RD_SIZE=`expr $RD_MIN_SIZE + $EXT2_RD_FREE_SIZE`
 121
 122                 printf "creating rd with size $RD_SIZE KB (used $RD_MIN_SIZE):"
 123                 dd if=/dev/zero of=$RD_IMAGE bs=1k count=$RD_SIZE
 124                 check
 125
 126                 printf "%-30s: " "Creating ext2"
 127                 yes | mke2fs $RD_IMAGE
 128                 check
 129                 printf "%-30s: " "Mounting RD"
 130                 if [ ! -d mnt ]
 131                 then
 132                         mkdir mnt
 133                 fi
 134                 mount $RD_IMAGE "`pwd`/mnt" -o loop
 135                 check
 136
 137                 printf "%-30s: " "Copy RD"
 138                 cp -R $RD_TMP/* mnt
 139                 if [ $? != 0 ]
 140                 then
 141                         umount mnt
 142                         exit
 143                 fi
 144                 echo "ok"
 145
 146                 printf "%-30s: " "Umount RD"
 147                 umount mnt
 148                 check
 149
 150                 printf "%-30s: " "packing RD"
 151                 gzip $RD_IMAGE
 152                 check
 153                 mv "$RD_IMAGE.gz" $ZFCPDUMP_RD
 154                 check
 155         else
 156                 echo "ERROR: Invalid ramdisk filesystem '$RD_FS'"
 157                 exit
 158         fi
 159         echo "=============================================================="
 160         echo "SUCCESS: built ramdisk '$ZFCPDUMP_RD'"
 161         echo "=============================================================="
 162 }
 163
 164 #
 165 # cleanup(): function to remove build files
 166 #
 167 function cleanup()
 168 {
 169         rm -rf $RD_TMP
 170         rm -rf e2fs*
 171         rm -f zfcp_dumper
 172         rm -f $RD_IMAGE
 173         rm -f "$RD_IMAGE.gz"
 174         rm -f $ZFCPDUMP_RD
 175 }
 176
 177 #
 178 # install(): function to install zfcpdump kernel
 179 #
 180 function install()
 181 {
 182         cp $ZFCPDUMP_RD "$INSTROOT/$ZFCPDUMP_DIR"; chmod 644 "$INSTROOT/$ZFCPDUMP_DIR/$ZFCPDUMP_RD"
 183 }
 184
 185 #
 186 # main
 187 #
 188
 189 if [ "$1" == "-r" ]
 190 then
 191         cleanup
 192 elif [ "$1" == "-i" ]
 193 then
 194         install
 195 else
 196         ARCH="$1"
 197         build
 198 fi