Merge tag 'for-linus-3.11-merge-window-part-1' of git://git.kernel.org/pub/scm/linux...
[linux-2.6.git] / scripts / patch-kernel
blobd000ea3a41fdb7f202a34e439cf954bd5353b74f
1 #! /bin/sh
2 # Script to apply kernel patches.
3 # usage: patch-kernel [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
4 # The source directory defaults to /usr/src/linux, and the patch
5 # directory defaults to the current directory.
6 # e.g.
7 # scripts/patch-kernel . ..
8 # Update the kernel tree in the current directory using patches in the
9 # directory above to the latest Linus kernel
10 # scripts/patch-kernel . .. -ac
11 # Get the latest Linux kernel and patch it with the latest ac patch
12 # scripts/patch-kernel . .. 2.4.9
13 # Gets standard kernel 2.4.9
14 # scripts/patch-kernel . .. 2.4.9 -ac
15 # Gets 2.4.9 with latest ac patches
16 # scripts/patch-kernel . .. 2.4.9 -ac11
17 # Gets 2.4.9 with ac patch ac11
18 # Note: It uses the patches relative to the Linus kernels, not the
19 # ac to ac relative patches
21 # It determines the current kernel version from the top-level Makefile.
22 # It then looks for patches for the next sublevel in the patch directory.
23 # This is applied using "patch -p1 -s" from within the kernel directory.
24 # A check is then made for "*.rej" files to see if the patch was
25 # successful. If it is, then all of the "*.orig" files are removed.
27 # Nick Holloway <Nick.Holloway@alfie.demon.co.uk>, 2nd January 1995.
29 # Added support for handling multiple types of compression. What includes
30 # gzip, bzip, bzip2, zip, compress, and plaintext.
32 # Adam Sulmicki <adam@cfar.umd.edu>, 1st January 1997.
34 # Added ability to stop at a given version number
35 # Put the full version number (i.e. 2.3.31) as the last parameter
36 # Dave Gilbert <linux@treblig.org>, 11th December 1999.
38 # Fixed previous patch so that if we are already at the correct version
39 # not to patch up.
41 # Added -ac option, use -ac or -ac9 (say) to stop at a particular version
42 # Dave Gilbert <linux@treblig.org>, 29th September 2001.
44 # Add support for (use of) EXTRAVERSION (to support 2.6.8.x, e.g.);
45 # update usage message;
46 # fix some whitespace damage;
47 # be smarter about stopping when current version is larger than requested;
48 # Randy Dunlap <rdunlap@xenotime.net>, 2004-AUG-18.
50 # Add better support for (non-incremental) 2.6.x.y patches;
51 # If an ending version number if not specified, the script automatically
52 # increments the SUBLEVEL (x in 2.6.x.y) until no more patch files are found;
53 # however, EXTRAVERSION (y in 2.6.x.y) is never automatically incremented
54 # but must be specified fully.
56 # patch-kernel does not normally support reverse patching, but does so when
57 # applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to 2.6.11.z
58 # is easy and handled by the script (reverse 2.6.11.y and apply 2.6.11.z).
59 # Randy Dunlap <rdunlap@xenotime.net>, 2005-APR-08.
61 PNAME=patch-kernel
63 # Set directories from arguments, or use defaults.
64 sourcedir=${1-/usr/src/linux}
65 patchdir=${2-.}
66 stopvers=${3-default}
68 if [ "$1" = -h -o "$1" = --help -o ! -r "$sourcedir/Makefile" ]; then
69 cat << USAGE
70 usage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
71 source directory defaults to /usr/src/linux,
72 patch directory defaults to the current directory,
73 stopversion defaults to <all in patchdir>.
74 USAGE
75 exit 1
78 # See if we have any -ac options
79 for PARM in $*
81 case $PARM in
82 -ac*)
83 gotac=$PARM;
85 esac;
86 done
88 # ---------------------------------------------------------------------------
89 # arg1 is filename
90 noFile () {
91 echo "cannot find patch file: ${patch}"
92 exit 1
95 # ---------------------------------------------------------------------------
96 backwards () {
97 echo "$PNAME does not support reverse patching"
98 exit 1
101 # ---------------------------------------------------------------------------
102 # Find a file, first parameter is basename of file
103 # it tries many compression mechanisms and sets variables to say how to get it
104 findFile () {
105 filebase=$1;
107 if [ -r ${filebase}.gz ]; then
108 ext=".gz"
109 name="gzip"
110 uncomp="gunzip -dc"
111 elif [ -r ${filebase}.bz ]; then
112 ext=".bz"
113 name="bzip"
114 uncomp="bunzip -dc"
115 elif [ -r ${filebase}.bz2 ]; then
116 ext=".bz2"
117 name="bzip2"
118 uncomp="bunzip2 -dc"
119 elif [ -r ${filebase}.xz ]; then
120 ext=".xz"
121 name="xz"
122 uncomp="xz -dc"
123 elif [ -r ${filebase}.zip ]; then
124 ext=".zip"
125 name="zip"
126 uncomp="unzip -d"
127 elif [ -r ${filebase}.Z ]; then
128 ext=".Z"
129 name="uncompress"
130 uncomp="uncompress -c"
131 elif [ -r ${filebase} ]; then
132 ext=""
133 name="plaintext"
134 uncomp="cat"
135 else
136 return 1;
139 return 0;
142 # ---------------------------------------------------------------------------
143 # Apply a patch and check it goes in cleanly
144 # First param is patch name (e.g. patch-2.4.9-ac5) - without path or extension
146 applyPatch () {
147 echo -n "Applying $1 (${name})... "
148 if $uncomp ${patchdir}/$1${ext} | patch -p1 -s -N -E -d $sourcedir
149 then
150 echo "done."
151 else
152 echo "failed. Clean up yourself."
153 return 1;
155 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
156 then
157 echo "Aborting. Reject files found."
158 return 1;
160 # Remove backup files
161 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
163 return 0;
166 # ---------------------------------------------------------------------------
167 # arg1 is patch filename
168 reversePatch () {
169 echo -n "Reversing $1 (${name}) ... "
170 if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir
171 then
172 echo "done."
173 else
174 echo "failed. Clean it up."
175 exit 1
177 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
178 then
179 echo "Aborting. Reject files found."
180 return 1
182 # Remove backup files
183 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
185 return 0
188 # set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION
189 # force $TMPFILEs below to be in local directory: a slash character prevents
190 # the dot command from using the search path.
191 TMPFILE=`mktemp ./.tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }
192 grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE
193 tr -d [:blank:] < $TMPFILE > $TMPFILE.1
194 . $TMPFILE.1
195 rm -f $TMPFILE*
196 if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ]
197 then
198 echo "unable to determine current kernel version" >&2
199 exit 1
202 NAME=`grep ^NAME $sourcedir/Makefile`
203 NAME=${NAME##*=}
205 echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($NAME)"
207 # strip EXTRAVERSION to just a number (drop leading '.' and trailing additions)
208 EXTRAVER=
209 if [ x$EXTRAVERSION != "x" ]
210 then
211 EXTRAVER=${EXTRAVERSION#.}
212 EXTRAVER=${EXTRAVER%%[[:punct:]]*}
213 #echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"
216 #echo "stopvers=$stopvers"
217 if [ $stopvers != "default" ]; then
218 STOPSUBLEVEL=`echo $stopvers | cut -d. -f3`
219 STOPEXTRA=`echo $stopvers | cut -d. -f4`
220 STOPFULLVERSION=${stopvers%%.$STOPEXTRA}
221 #echo "#___STOPSUBLEVEL=/$STOPSUBLEVEL/, STOPEXTRA=/$STOPEXTRA/"
222 else
223 STOPSUBLEVEL=9999
224 STOPEXTRA=9999
227 # This all assumes a 2.6.x[.y] kernel tree.
228 # Don't allow backwards/reverse patching.
229 if [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then
230 backwards
233 if [ x$EXTRAVER != "x" ]; then
234 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER"
235 else
236 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
239 if [ x$EXTRAVER != "x" ]; then
240 echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL"
241 patch="patch-${CURRENTFULLVERSION}"
242 findFile $patchdir/${patch} || noFile ${patch}
243 reversePatch ${patch} || exit 1
246 # now current is 2.6.x, with no EXTRA applied,
247 # so update to target SUBLEVEL (2.6.SUBLEVEL)
248 # and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested.
249 # If not ending sublevel is specified, it is incremented until
250 # no further sublevels are found.
252 if [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then
253 while : # incrementing SUBLEVEL (s in v.p.s)
255 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
256 EXTRAVER=
257 if [ x$STOPFULLVERSION = x$CURRENTFULLVERSION ]; then
258 echo "Stopping at $CURRENTFULLVERSION base as requested."
259 break
262 SUBLEVEL=$(($SUBLEVEL + 1))
263 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
264 #echo "#___ trying $FULLVERSION ___"
266 if [ $(($SUBLEVEL)) -gt $(($STOPSUBLEVEL)) ]; then
267 echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)"
268 exit 1
271 patch=patch-$FULLVERSION
272 # See if the file exists and find extension
273 findFile $patchdir/${patch} || noFile ${patch}
275 # Apply the patch and check all is OK
276 applyPatch $patch || break
277 done
278 #echo "#___sublevel all done"
281 # There is no incremental searching for extraversion...
282 if [ "$STOPEXTRA" != "" ]; then
283 while : # just to allow break
285 # apply STOPEXTRA directly (not incrementally) (x in v.p.s.x)
286 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$STOPEXTRA"
287 #echo "#... trying $FULLVERSION ..."
288 patch=patch-$FULLVERSION
290 # See if the file exists and find extension
291 findFile $patchdir/${patch} || noFile ${patch}
293 # Apply the patch and check all is OK
294 applyPatch $patch || break
295 #echo "#___extraver all done"
296 break
297 done
300 if [ x$gotac != x ]; then
301 # Out great user wants the -ac patches
302 # They could have done -ac (get latest) or -acxx where xx=version they want
303 if [ $gotac = "-ac" ]; then
304 # They want the latest version
305 HIGHESTPATCH=0
306 for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.*
308 ACVALUE=`echo $PATCHNAMES | sed -e 's/^.*patch-[0-9.]*-ac\([0-9]*\).*/\1/'`
309 # Check it is actually a recognised patch type
310 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${ACVALUE} || break
312 if [ $ACVALUE -gt $HIGHESTPATCH ]; then
313 HIGHESTPATCH=$ACVALUE
315 done
317 if [ $HIGHESTPATCH -ne 0 ]; then
318 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} || break
319 applyPatch patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH}
320 else
321 echo "No -ac patches found"
323 else
324 # They want an exact version
325 findFile $patchdir/patch-${CURRENTFULLVERSION}${gotac} || {
326 echo "Sorry, I couldn't find the $gotac patch for $CURRENTFULLVERSION. Hohum."
327 exit 1
329 applyPatch patch-${CURRENTFULLVERSION}${gotac}