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332 lines
9.9 KiB
332 lines
9.9 KiB
#! /bin/sh |
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# SPDX-License-Identifier: GPL-2.0 |
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# Script to apply kernel patches. |
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# usage: patch-kernel [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ] |
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# The source directory defaults to /usr/src/linux, and the patch |
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# directory defaults to the current directory. |
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# e.g. |
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# scripts/patch-kernel . .. |
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# Update the kernel tree in the current directory using patches in the |
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# directory above to the latest Linus kernel |
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# scripts/patch-kernel . .. -ac |
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# Get the latest Linux kernel and patch it with the latest ac patch |
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# scripts/patch-kernel . .. 2.4.9 |
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# Gets standard kernel 2.4.9 |
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# scripts/patch-kernel . .. 2.4.9 -ac |
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# Gets 2.4.9 with latest ac patches |
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# scripts/patch-kernel . .. 2.4.9 -ac11 |
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# Gets 2.4.9 with ac patch ac11 |
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# Note: It uses the patches relative to the Linus kernels, not the |
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# ac to ac relative patches |
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# |
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# It determines the current kernel version from the top-level Makefile. |
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# It then looks for patches for the next sublevel in the patch directory. |
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# This is applied using "patch -p1 -s" from within the kernel directory. |
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# A check is then made for "*.rej" files to see if the patch was |
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# successful. If it is, then all of the "*.orig" files are removed. |
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# |
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# Nick Holloway <[email protected]>, 2nd January 1995. |
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# |
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# Added support for handling multiple types of compression. What includes |
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# gzip, bzip, bzip2, zip, compress, and plaintext. |
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# |
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# Adam Sulmicki <[email protected]>, 1st January 1997. |
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# |
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# Added ability to stop at a given version number |
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# Put the full version number (i.e. 2.3.31) as the last parameter |
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# Dave Gilbert <[email protected]>, 11th December 1999. |
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# Fixed previous patch so that if we are already at the correct version |
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# not to patch up. |
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# |
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# Added -ac option, use -ac or -ac9 (say) to stop at a particular version |
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# Dave Gilbert <[email protected]>, 29th September 2001. |
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# |
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# Add support for (use of) EXTRAVERSION (to support 2.6.8.x, e.g.); |
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# update usage message; |
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# fix some whitespace damage; |
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# be smarter about stopping when current version is larger than requested; |
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# Randy Dunlap <[email protected]>, 2004-AUG-18. |
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# |
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# Add better support for (non-incremental) 2.6.x.y patches; |
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# If an ending version number if not specified, the script automatically |
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# increments the SUBLEVEL (x in 2.6.x.y) until no more patch files are found; |
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# however, EXTRAVERSION (y in 2.6.x.y) is never automatically incremented |
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# but must be specified fully. |
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# |
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# patch-kernel does not normally support reverse patching, but does so when |
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# applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to 2.6.11.z |
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# is easy and handled by the script (reverse 2.6.11.y and apply 2.6.11.z). |
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# Randy Dunlap <[email protected]>, 2005-APR-08. |
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PNAME=patch-kernel |
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# Set directories from arguments, or use defaults. |
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sourcedir=${1-/usr/src/linux} |
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patchdir=${2-.} |
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stopvers=${3-default} |
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if [ "$1" = -h -o "$1" = --help -o ! -r "$sourcedir/Makefile" ]; then |
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cat << USAGE |
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usage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ] |
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source directory defaults to /usr/src/linux, |
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patch directory defaults to the current directory, |
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stopversion defaults to <all in patchdir>. |
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USAGE |
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exit 1 |
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fi |
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# See if we have any -ac options |
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for PARM in $* |
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do |
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case $PARM in |
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-ac*) |
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gotac=$PARM; |
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esac; |
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done |
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# --------------------------------------------------------------------------- |
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# arg1 is filename |
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noFile () { |
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echo "cannot find patch file: ${patch}" |
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exit 1 |
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} |
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# --------------------------------------------------------------------------- |
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backwards () { |
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echo "$PNAME does not support reverse patching" |
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exit 1 |
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} |
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# --------------------------------------------------------------------------- |
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# Find a file, first parameter is basename of file |
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# it tries many compression mechanisms and sets variables to say how to get it |
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findFile () { |
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filebase=$1; |
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if [ -r ${filebase}.gz ]; then |
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ext=".gz" |
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name="gzip" |
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uncomp="gunzip -dc" |
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elif [ -r ${filebase}.bz ]; then |
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ext=".bz" |
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name="bzip" |
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uncomp="bunzip -dc" |
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elif [ -r ${filebase}.bz2 ]; then |
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ext=".bz2" |
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name="bzip2" |
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uncomp="bunzip2 -dc" |
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elif [ -r ${filebase}.xz ]; then |
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ext=".xz" |
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name="xz" |
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uncomp="xz -dc" |
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elif [ -r ${filebase}.zip ]; then |
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ext=".zip" |
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name="zip" |
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uncomp="unzip -d" |
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elif [ -r ${filebase}.Z ]; then |
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ext=".Z" |
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name="uncompress" |
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uncomp="uncompress -c" |
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elif [ -r ${filebase} ]; then |
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ext="" |
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name="plaintext" |
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uncomp="cat" |
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else |
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return 1; |
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fi |
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return 0; |
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} |
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# --------------------------------------------------------------------------- |
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# Apply a patch and check it goes in cleanly |
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# First param is patch name (e.g. patch-2.4.9-ac5) - without path or extension |
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applyPatch () { |
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echo -n "Applying $1 (${name})... " |
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if $uncomp ${patchdir}/$1${ext} | patch -p1 -s -N -E -d $sourcedir |
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then |
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echo "done." |
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else |
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echo "failed. Clean up yourself." |
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return 1; |
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fi |
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if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] |
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then |
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echo "Aborting. Reject files found." |
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return 1; |
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fi |
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# Remove backup files |
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find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \; |
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return 0; |
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} |
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# --------------------------------------------------------------------------- |
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# arg1 is patch filename |
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reversePatch () { |
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echo -n "Reversing $1 (${name}) ... " |
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if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir |
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then |
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echo "done." |
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else |
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echo "failed. Clean it up." |
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exit 1 |
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fi |
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if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] |
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then |
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echo "Aborting. Reject files found." |
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return 1 |
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fi |
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# Remove backup files |
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find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \; |
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return 0 |
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} |
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# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION |
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# force $TMPFILEs below to be in local directory: a slash character prevents |
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# the dot command from using the search path. |
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TMPFILE=`mktemp ./.tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; } |
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grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE |
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tr -d [:blank:] < $TMPFILE > $TMPFILE.1 |
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. $TMPFILE.1 |
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rm -f $TMPFILE* |
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if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ] |
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then |
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echo "unable to determine current kernel version" >&2 |
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exit 1 |
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fi |
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NAME=`grep ^NAME $sourcedir/Makefile` |
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NAME=${NAME##*=} |
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echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($NAME)" |
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# strip EXTRAVERSION to just a number (drop leading '.' and trailing additions) |
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EXTRAVER= |
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if [ x$EXTRAVERSION != "x" ] |
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then |
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EXTRAVER=${EXTRAVERSION#.} |
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EXTRAVER=${EXTRAVER%%[[:punct:]]*} |
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#echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER" |
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fi |
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#echo "stopvers=$stopvers" |
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if [ $stopvers != "default" ]; then |
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STOPSUBLEVEL=`echo $stopvers | cut -d. -f3` |
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STOPEXTRA=`echo $stopvers | cut -d. -f4` |
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STOPFULLVERSION=${stopvers%%.$STOPEXTRA} |
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#echo "#___STOPSUBLEVEL=/$STOPSUBLEVEL/, STOPEXTRA=/$STOPEXTRA/" |
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else |
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STOPSUBLEVEL=9999 |
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STOPEXTRA=9999 |
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fi |
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# This all assumes a 2.6.x[.y] kernel tree. |
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# Don't allow backwards/reverse patching. |
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if [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then |
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backwards |
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fi |
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if [ x$EXTRAVER != "x" ]; then |
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CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER" |
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else |
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CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" |
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fi |
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if [ x$EXTRAVER != "x" ]; then |
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echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL" |
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patch="patch-${CURRENTFULLVERSION}" |
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findFile $patchdir/${patch} || noFile ${patch} |
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reversePatch ${patch} || exit 1 |
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fi |
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# now current is 2.6.x, with no EXTRA applied, |
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# so update to target SUBLEVEL (2.6.SUBLEVEL) |
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# and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested. |
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# If not ending sublevel is specified, it is incremented until |
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# no further sublevels are found. |
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if [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then |
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while : # incrementing SUBLEVEL (s in v.p.s) |
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do |
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CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" |
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EXTRAVER= |
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if [ x$STOPFULLVERSION = x$CURRENTFULLVERSION ]; then |
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echo "Stopping at $CURRENTFULLVERSION base as requested." |
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break |
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fi |
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SUBLEVEL=$(($SUBLEVEL + 1)) |
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FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" |
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#echo "#___ trying $FULLVERSION ___" |
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if [ $(($SUBLEVEL)) -gt $(($STOPSUBLEVEL)) ]; then |
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echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)" |
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exit 1 |
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fi |
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patch=patch-$FULLVERSION |
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# See if the file exists and find extension |
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findFile $patchdir/${patch} || noFile ${patch} |
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# Apply the patch and check all is OK |
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applyPatch $patch || break |
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done |
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#echo "#___sublevel all done" |
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fi |
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# There is no incremental searching for extraversion... |
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if [ "$STOPEXTRA" != "" ]; then |
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while : # just to allow break |
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do |
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# apply STOPEXTRA directly (not incrementally) (x in v.p.s.x) |
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FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$STOPEXTRA" |
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#echo "#... trying $FULLVERSION ..." |
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patch=patch-$FULLVERSION |
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# See if the file exists and find extension |
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findFile $patchdir/${patch} || noFile ${patch} |
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# Apply the patch and check all is OK |
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applyPatch $patch || break |
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#echo "#___extraver all done" |
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break |
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done |
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fi |
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if [ x$gotac != x ]; then |
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# Out great user wants the -ac patches |
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# They could have done -ac (get latest) or -acxx where xx=version they want |
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if [ $gotac = "-ac" ]; then |
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# They want the latest version |
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HIGHESTPATCH=0 |
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for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.* |
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do |
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ACVALUE=`echo $PATCHNAMES | sed -e 's/^.*patch-[0-9.]*-ac\([0-9]*\).*/\1/'` |
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# Check it is actually a recognised patch type |
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findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${ACVALUE} || break |
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if [ $ACVALUE -gt $HIGHESTPATCH ]; then |
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HIGHESTPATCH=$ACVALUE |
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fi |
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done |
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if [ $HIGHESTPATCH -ne 0 ]; then |
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findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} || break |
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applyPatch patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} |
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else |
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echo "No -ac patches found" |
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fi |
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else |
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# They want an exact version |
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findFile $patchdir/patch-${CURRENTFULLVERSION}${gotac} || { |
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echo "Sorry, I couldn't find the $gotac patch for $CURRENTFULLVERSION. Hohum." |
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exit 1 |
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} |
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applyPatch patch-${CURRENTFULLVERSION}${gotac} |
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fi |
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fi
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