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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#! /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
20#
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.
26#
27# Nick Holloway <Nick.Holloway@alfie.demon.co.uk>, 2nd January 1995.
28#
29# Added support for handling multiple types of compression. What includes
30# gzip, bzip, bzip2, zip, compress, and plaintext.
31#
32# Adam Sulmicki <adam@cfar.umd.edu>, 1st January 1997.
33#
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.
37
38# Fixed previous patch so that if we are already at the correct version
39# not to patch up.
40#
41# Added -ac option, use -ac or -ac9 (say) to stop at a particular version
42# Dave Gilbert <linux@treblig.org>, 29th September 2001.
43#
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;
Adrian Bunkf4b09eb2006-01-03 13:37:51 +010048# Randy Dunlap <rdunlap@xenotime.net>, 2004-AUG-18.
Randy.Dunlap19221632005-05-05 16:15:43 -070049#
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.
55#
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).
Adrian Bunkf4b09eb2006-01-03 13:37:51 +010059# Randy Dunlap <rdunlap@xenotime.net>, 2005-APR-08.
Randy.Dunlap19221632005-05-05 16:15:43 -070060
61PNAME=patch-kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
63# Set directories from arguments, or use defaults.
64sourcedir=${1-/usr/src/linux}
65patchdir=${2-.}
66stopvers=${3-default}
67
68if [ "$1" == -h -o "$1" == --help -o ! -r "$sourcedir/Makefile" ]; then
69cat << USAGE
Randy.Dunlap19221632005-05-05 16:15:43 -070070usage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 source directory defaults to /usr/src/linux,
72 patch directory defaults to the current directory,
73 stopversion defaults to <all in patchdir>.
74USAGE
75exit 1
76fi
77
78# See if we have any -ac options
79for PARM in $*
80do
81 case $PARM in
82 -ac*)
83 gotac=$PARM;
84
85 esac;
86done
87
88# ---------------------------------------------------------------------------
Randy.Dunlap19221632005-05-05 16:15:43 -070089# arg1 is filename
90noFile () {
91 echo "cannot find patch file: ${patch}"
92 exit 1
93}
94
95# ---------------------------------------------------------------------------
96backwards () {
97 echo "$PNAME does not support reverse patching"
98 exit 1
99}
100
101# ---------------------------------------------------------------------------
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102# Find a file, first parameter is basename of file
103# it tries many compression mechanisms and sets variables to say how to get it
104findFile () {
105 filebase=$1;
106
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}.zip ]; then
120 ext=".zip"
121 name="zip"
122 uncomp="unzip -d"
123 elif [ -r ${filebase}.Z ]; then
124 ext=".Z"
125 name="uncompress"
126 uncomp="uncompress -c"
127 elif [ -r ${filebase} ]; then
128 ext=""
129 name="plaintext"
130 uncomp="cat"
131 else
132 return 1;
133 fi
134
135 return 0;
136}
137
138# ---------------------------------------------------------------------------
139# Apply a patch and check it goes in cleanly
140# First param is patch name (e.g. patch-2.4.9-ac5) - without path or extension
141
142applyPatch () {
143 echo -n "Applying $1 (${name})... "
144 if $uncomp ${patchdir}/$1${ext} | patch -p1 -s -N -E -d $sourcedir
145 then
146 echo "done."
147 else
148 echo "failed. Clean up yourself."
149 return 1;
150 fi
151 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
152 then
153 echo "Aborting. Reject files found."
154 return 1;
155 fi
156 # Remove backup files
157 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
158
159 return 0;
160}
161
Randy.Dunlap19221632005-05-05 16:15:43 -0700162# ---------------------------------------------------------------------------
163# arg1 is patch filename
164reversePatch () {
165 echo -n "Reversing $1 (${name}) ... "
166 if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir
167 then
168 echo "done."
169 else
170 echo "failed. Clean it up."
171 exit 1
172 fi
173 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
174 then
175 echo "Aborting. Reject files found."
176 return 1
177 fi
178 # Remove backup files
179 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
180
181 return 0
182}
183
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION
185TMPFILE=`mktemp .tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }
186grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE
187tr -d [:blank:] < $TMPFILE > $TMPFILE.1
188source $TMPFILE.1
189rm -f $TMPFILE*
190if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ]
191then
192 echo "unable to determine current kernel version" >&2
193 exit 1
194fi
195
196NAME=`grep ^NAME $sourcedir/Makefile`
197NAME=${NAME##*=}
198
199echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($NAME)"
200
201# strip EXTRAVERSION to just a number (drop leading '.' and trailing additions)
202EXTRAVER=
203if [ x$EXTRAVERSION != "x" ]
204then
205 if [ ${EXTRAVERSION:0:1} == "." ]; then
206 EXTRAVER=${EXTRAVERSION:1}
207 else
208 EXTRAVER=$EXTRAVERSION
209 fi
210 EXTRAVER=${EXTRAVER%%[[:punct:]]*}
Randy.Dunlap19221632005-05-05 16:15:43 -0700211 #echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212fi
213
214#echo "stopvers=$stopvers"
215if [ $stopvers != "default" ]; then
216 STOPSUBLEVEL=`echo $stopvers | cut -d. -f3`
217 STOPEXTRA=`echo $stopvers | cut -d. -f4`
Randy.Dunlap19221632005-05-05 16:15:43 -0700218 #echo "#___STOPSUBLEVEL=/$STOPSUBLEVEL/, STOPEXTRA=/$STOPEXTRA/"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219else
220 STOPSUBLEVEL=9999
221 STOPEXTRA=9999
222fi
223
Randy.Dunlap19221632005-05-05 16:15:43 -0700224# This all assumes a 2.6.x[.y] kernel tree.
225# Don't allow backwards/reverse patching.
226if [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then
227 backwards
228fi
229
230if [ x$EXTRAVER != "x" ]; then
231 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER"
232else
233 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
234fi
235
236if [ x$EXTRAVER != "x" ]; then
237 echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL"
238 patch="patch-${CURRENTFULLVERSION}"
239 findFile $patchdir/${patch} || noFile ${patch}
240 reversePatch ${patch} || exit 1
241fi
242
243# now current is 2.6.x, with no EXTRA applied,
244# so update to target SUBLEVEL (2.6.SUBLEVEL)
245# and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested.
246# If not ending sublevel is specified, it is incremented until
247# no further sublevels are found.
248
249if [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250while : # incrementing SUBLEVEL (s in v.p.s)
251do
Randy.Dunlap19221632005-05-05 16:15:43 -0700252 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
253 EXTRAVER=
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 if [ $stopvers == $CURRENTFULLVERSION ]; then
255 echo "Stopping at $CURRENTFULLVERSION base as requested."
256 break
257 fi
258
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 SUBLEVEL=$((SUBLEVEL + 1))
260 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
Randy.Dunlap19221632005-05-05 16:15:43 -0700261 #echo "#___ trying $FULLVERSION ___"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
263 if [ $((SUBLEVEL)) -gt $((STOPSUBLEVEL)) ]; then
264 echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)"
265 exit 1
266 fi
267
268 patch=patch-$FULLVERSION
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 # See if the file exists and find extension
Randy.Dunlap19221632005-05-05 16:15:43 -0700270 findFile $patchdir/${patch} || noFile ${patch}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
272 # Apply the patch and check all is OK
273 applyPatch $patch || break
274done
Randy.Dunlap19221632005-05-05 16:15:43 -0700275#echo "#___sublevel all done"
276fi
277
278# There is no incremental searching for extraversion...
279if [ "$STOPEXTRA" != "" ]; then
280while : # just to allow break
281do
282# apply STOPEXTRA directly (not incrementally) (x in v.p.s.x)
283 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$STOPEXTRA"
284 #echo "#... trying $FULLVERSION ..."
285 patch=patch-$FULLVERSION
286
287 # See if the file exists and find extension
288 findFile $patchdir/${patch} || noFile ${patch}
289
290 # Apply the patch and check all is OK
291 applyPatch $patch || break
292 #echo "#___extraver all done"
293 break
294done
295fi
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
297if [ x$gotac != x ]; then
298 # Out great user wants the -ac patches
299 # They could have done -ac (get latest) or -acxx where xx=version they want
300 if [ $gotac == "-ac" ]; then
301 # They want the latest version
302 HIGHESTPATCH=0
303 for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.*
304 do
305 ACVALUE=`echo $PATCHNAMES | sed -e 's/^.*patch-[0-9.]*-ac\([0-9]*\).*/\1/'`
306 # Check it is actually a recognised patch type
307 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${ACVALUE} || break
308
309 if [ $ACVALUE -gt $HIGHESTPATCH ]; then
310 HIGHESTPATCH=$ACVALUE
311 fi
312 done
313
314 if [ $HIGHESTPATCH -ne 0 ]; then
315 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} || break
316 applyPatch patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH}
317 else
318 echo "No -ac patches found"
319 fi
320 else
321 # They want an exact version
322 findFile $patchdir/patch-${CURRENTFULLVERSION}${gotac} || {
323 echo "Sorry, I couldn't find the $gotac patch for $CURRENTFULLVERSION. Hohum."
324 exit 1
325 }
326 applyPatch patch-${CURRENTFULLVERSION}${gotac}
327 fi
328fi