scripts/patch-kernel

   1 #! /bin/sh
   2 # Script to apply kernel patches.
   3 #   usage: patch-kernel [ sourcedir [ patchdir [ stopversion ] ] ]
   4 #     The source directory defaults to /usr/src/linux, and the patch
   5 #     directory defaults to the current directory.
   6 #
   7 # It determines the current kernel version from the top-level Makefile.
   8 # It then looks for patches for the next sublevel in the patch directory.
   9 # This is applied using "patch -p1 -s" from within the kernel directory.
  10 # A check is then made for "*.rej" files to see if the patch was
  11 # successful.  If it is, then all of the "*.orig" files are removed.
  12 #
  13 #       Nick Holloway <Nick.Holloway@alfie.demon.co.uk>, 2nd January 1995.
  14 #
  15 # Added support for handling multiple types of compression. What includes
  16 # gzip, bzip, bzip2, zip, compress, and plaintext.
  17 #
  18 #       Adam Sulmicki <adam@cfar.umd.edu>, 1st January 1997.
  19 #
  20 # Added ability to stop at a given version number
  21 # Put the full version number (i.e. 2.3.31) as the last parameter
  22 #       Dave Gilbert <linux@treblig.org>, 11th December 1999.
  23
  24 # Set directories from arguments, or use defaults.
  25 sourcedir=${1-/usr/src/linux}
  26 patchdir=${2-.}
  27 stopvers=${3-imnotaversion}
  28
  29 # set current VERSION, PATCHLEVEL, SUBLEVEL
  30 eval `sed -n 's/^\([A-Z]*\) = \([0-9]*\)$/\1=\2/p' $sourcedir/Makefile`
  31 if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ]
  32 then
  33     echo "unable to determine current kernel version" >&2
  34     exit 1
  35 fi
  36
  37 echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL"
  38
  39 while :
  40 do
  41     SUBLEVEL=`expr $SUBLEVEL + 1`
  42     FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
  43
  44     patch=patch-$FULLVERSION
  45     if [ -r $patchdir/${patch}.gz ]; then
  46         ext=".gz"
  47         name="gzip"
  48         uncomp="gunzip -dc"
  49     elif [ -r $patchdir/${patch}.bz  ]; then
  50         ext=".bz"
  51         name="bzip"
  52         uncomp="bunzip -dc"
  53     elif [ -r $patchdir/${patch}.bz2 ]; then
  54         ext=".bz2"
  55         name="bzip2"
  56         uncomp="bunzip2 -dc"
  57     elif [ -r $patchdir/${patch}.zip ]; then
  58         ext=".zip"
  59         name="zip"
  60         uncomp="unzip -d"
  61     elif [ -r $patchdir/${patch}.Z ]; then
  62         ext=".Z"
  63         name="uncompress"
  64         uncomp="uncompress -c"
  65     elif [ -r $patchdir/${patch}     ]; then
  66         ext=""
  67         name="plaintext"
  68         uncomp="cat"
  69     else
  70         break
  71     fi
  72
  73     echo -n "Applying ${patch} (${name})... "
  74     if $uncomp ${patchdir}/${patch}${ext} | patch -p1 -s -N -E -d $sourcedir
  75     then
  76         echo "done."
  77     else
  78         echo "failed.  Clean up yourself."
  79         break
  80     fi
  81     if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
  82     then
  83         echo "Aborting.  Reject files found."
  84         break
  85     fi
  86     # Remove backup files
  87     find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
  88
  89     if [ $stopvers = $FULLVERSION ]
  90     then
  91         echo "Stoping at $FULLVERSION as requested. Enjoy."
  92         break
  93     fi
  94 done