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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3674 | svoboda | 1 | #!/bin/bash |
| 2 | |||
| 3 | # Download SILO and patch it so that it can be used to create a bootable CD |
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| 4 | # for the Serengeti machine |
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| 5 | # by Pavel Rimsky <rimskyp@seznam.cz> |
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| 6 | # portions by Martin Decky <martin@decky.cz> |
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| 7 | # |
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| 8 | # GPL'ed, copyleft |
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| 9 | # |
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| 10 | |||
| 11 | # stuff to be downloaded |
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| 12 | SILO_DOWNLOAD_FILE='silo-loaders-1.4.11.tar.gz' |
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| 13 | SILO_DOWNLOAD_URL='http://silo.auxio.org/pub/silo/old/'$SILO_DOWNLOAD_FILE |
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| 14 | |||
| 15 | # check whether the last command failed, if so, write an error message and exit |
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| 16 | check_error() { |
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| 17 | if [ "$1" -ne "0" ]; then |
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| 18 | echo |
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| 19 | echo "Script failed: $2" |
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| 20 | exit |
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| 21 | fi |
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| 22 | } |
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| 23 | |||
| 24 | # temporary files are to be stored in /tmp |
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| 25 | # the resulting file in the current directory |
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| 26 | WD=`pwd` |
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| 27 | cd /tmp |
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| 28 | |||
| 29 | # download SILO from its official website |
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| 30 | echo ">>> Downloading SILO" |
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| 31 | wget $SILO_DOWNLOAD_URL |
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| 32 | check_error $? "Error downloading SILO." |
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| 33 | |||
| 34 | # unpack the downloaded file |
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| 35 | echo ">>> Unpacking tarball" |
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| 36 | tar xvzf $SILO_DOWNLOAD_FILE |
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| 37 | check_error $? "Error unpacking tarball." |
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| 38 | |||
| 39 | # CD to the unpacked directory |
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| 40 | echo ">>> Changing to the unpacked SILO directory" |
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| 41 | cd boot |
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| 42 | check_error $? "Changing directory failed." |
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| 43 | |||
| 44 | # patch it - remove bytes 512 to 512 + 32 (counted from 0), which belong to |
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| 45 | # the ELF header which is not recognized by the Serengeti firmware |
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| 46 | echo ">>> Patching SILO" |
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| 47 | (((xxd -p -l 512 isofs.b) && (xxd -p -s 544 isofs.b)) | xxd -r -p) \ |
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| 48 | > isofs.b.patched |
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| 49 | check_error $? "Patching SILO failed" |
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| 50 | mv isofs.b.patched isofs.b |
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| 51 | |||
| 52 | # get rid of files which are not needed for creating the bootable CD |
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| 53 | echo ">>> Purging SILO directory" |
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| 54 | for file in `ls`; do |
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| 55 | if [ \( -f $file \) -a \( $file != "isofs.b" \) -a \( $file != "second.b" \) ]; |
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| 56 | then |
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| 57 | rm -fr $file; |
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| 58 | fi |
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| 59 | done |
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| 60 | check_error $? "Purging SILO directory failed" |
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| 61 | |||
| 62 | # create the gzipped tarball with patched SILO |
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| 63 | echo ">>> Creating tarball with patched SILO" |
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| 64 | tar cvzf silo.patched.tar.gz *.b |
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| 65 | check_error $? "Creating tarball with patched SILO failed" |
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| 66 | |||
| 67 | # and move it to the directory where the user expects it to be |
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| 68 | echo ">>> Moving the tarball with patched SILO to the current directory" |
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| 69 | mv silo.patched.tar.gz $WD |
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| 70 | check_error $? "Moving the tarball with patched SILO failed" |
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| 71 | |||
| 72 | # move back to the working directory from /tmp |
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| 73 | cd $WD |
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| 74 |