scripts/patch-kernel

   1 #! /bin/sh
   2 # Script to apply kernel patches.
   3 #   usage: patch-kernel [ sourcedir [ patchdir ] ]
   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 # Set directories from arguments, or use defaults.
  21 sourcedir=${1-/usr/src/linux}
  22 patchdir=${2-.}
  23
  24 # set current VERSION, PATCHLEVEL, SUBLEVEL
  25 eval `sed -n 's/^\([A-Z]*\) = \([0-9]*\)$/\1=\2/p' $sourcedir/Makefile`
  26 if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ]
  27 then
  28     echo "unable to determine current kernel version" >&2
  29     exit 1
  30 fi
  31
  32 echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL"
  33
  34 while :
  35 do
  36     SUBLEVEL=`expr $SUBLEVEL + 1`
  37     patch=patch-$VERSION.$PATCHLEVEL.$SUBLEVEL
  38     if [ -r $patchdir/${patch}.gz ]; then
  39         ext=".gz"
  40         name="gzip"
  41         uncomp="gunzip -dc"
  42     elif [ -r $patchdir/${patch}.bz  ]; then
  43         ext=".bz"
  44         name="bzip"
  45         uncomp="bunzip -dc"
  46     elif [ -r $patchdir/${patch}.bz2 ]; then
  47         ext=".bz2"
  48         name="bzip2"
  49         uncomp="bunzip2 -dc"
  50     elif [ -r $patchdir/${patch}.zip ]; then
  51         ext=".zip"
  52         name="zip"
  53         uncomp="unzip -d"
  54     elif [ -r $patchdir/${patch}.Z ]; then
  55         ext=".Z"
  56         name="uncompress"
  57         uncomp="uncompress -c"
  58     elif [ -r $patchdir/${patch}     ]; then
  59         ext=""
  60         name="plaintext"
  61         uncomp="cat"
  62     else
  63         break
  64     fi
  65
  66     echo -n "Applying ${patch} (${name})... "
  67     if $uncomp ${patchdir}/${patch}${ext} | patch -p1 -s -N -E -d $sourcedir
  68     then
  69         echo "done."
  70     else
  71         echo "failed.  Clean up yourself."
  72         break
  73     fi
  74     if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
  75     then
  76         echo "Aborting.  Reject files found."
  77         break
  78     fi
  79     # Remove backup files
  80     find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
  81 done