linux/scripts/patch-kernel at master · scumbag-pull-request/linux · GitHub

History

executable file

327 lines (291 loc) · 9.8 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

#! /bin/sh

# Script to apply kernel patches.

# usage: patch-kernel [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]

# The source directory defaults to /usr/src/linux, and the patch

# directory defaults to the current directory.

# e.g.

# scripts/patch-kernel . ..

# Update the kernel tree in the current directory using patches in the

# directory above to the latest Linus kernel

# scripts/patch-kernel . .. -ac

# Get the latest Linux kernel and patch it with the latest ac patch

# scripts/patch-kernel . .. 2.4.9

# Gets standard kernel 2.4.9

# scripts/patch-kernel . .. 2.4.9 -ac

# Gets 2.4.9 with latest ac patches

# scripts/patch-kernel . .. 2.4.9 -ac11

# Gets 2.4.9 with ac patch ac11

# Note: It uses the patches relative to the Linus kernels, not the

# ac to ac relative patches

# It determines the current kernel version from the top-level Makefile.

# It then looks for patches for the next sublevel in the patch directory.

# This is applied using "patch -p1 -s" from within the kernel directory.

# A check is then made for "*.rej" files to see if the patch was

# successful. If it is, then all of the "*.orig" files are removed.

# Nick Holloway <Nick.Holloway@alfie.demon.co.uk>, 2nd January 1995.

# Added support for handling multiple types of compression. What includes

# gzip, bzip, bzip2, zip, compress, and plaintext.

# Adam Sulmicki <adam@cfar.umd.edu>, 1st January 1997.

# Added ability to stop at a given version number

# Put the full version number (i.e. 2.3.31) as the last parameter

# Dave Gilbert <linux@treblig.org>, 11th December 1999.

# Fixed previous patch so that if we are already at the correct version

# not to patch up.

# Added -ac option, use -ac or -ac9 (say) to stop at a particular version

# Dave Gilbert <linux@treblig.org>, 29th September 2001.

# Add support for (use of) EXTRAVERSION (to support 2.6.8.x, e.g.);

# update usage message;

# fix some whitespace damage;

# be smarter about stopping when current version is larger than requested;

# Randy Dunlap <rdunlap@xenotime.net>, 2004-AUG-18.

# Add better support for (non-incremental) 2.6.x.y patches;

# If an ending version number if not specified, the script automatically

# increments the SUBLEVEL (x in 2.6.x.y) until no more patch files are found;

# however, EXTRAVERSION (y in 2.6.x.y) is never automatically incremented

# but must be specified fully.

# patch-kernel does not normally support reverse patching, but does so when

# applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to 2.6.11.z

# is easy and handled by the script (reverse 2.6.11.y and apply 2.6.11.z).

# Randy Dunlap <rdunlap@xenotime.net>, 2005-APR-08.

PNAME=patch-kernel

# Set directories from arguments, or use defaults.

sourcedir=${1-/usr/src/linux}

patchdir=${2-.}

stopvers=${3-default}

if [ "$1" = -h -o "$1" = --help -o ! -r "$sourcedir/Makefile" ]; then

cat << USAGE

usage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]

source directory defaults to /usr/src/linux,

patch directory defaults to the current directory,

stopversion defaults to <all in patchdir>.

USAGE

exit 1

# See if we have any -ac options

for PARM in $*

case $PARM in

-ac*)

gotac=$PARM;

esac;

done

# ---------------------------------------------------------------------------

# arg1 is filename

noFile () {

echo "cannot find patch file: ${patch}"

exit 1

}

# ---------------------------------------------------------------------------

backwards () {

echo "$PNAME does not support reverse patching"

exit 1

}

# ---------------------------------------------------------------------------

# Find a file, first parameter is basename of file

# it tries many compression mechanisms and sets variables to say how to get it

findFile () {

filebase=$1;

if [ -r ${filebase}.gz ]; then

ext=".gz"

name="gzip"

uncomp="gunzip -dc"

elif [ -r ${filebase}.bz ]; then

ext=".bz"

name="bzip"

uncomp="bunzip -dc"

elif [ -r ${filebase}.bz2 ]; then

ext=".bz2"

name="bzip2"

uncomp="bunzip2 -dc"

elif [ -r ${filebase}.zip ]; then

ext=".zip"

name="zip"

uncomp="unzip -d"

elif [ -r ${filebase}.Z ]; then

ext=".Z"

name="uncompress"

uncomp="uncompress -c"

elif [ -r ${filebase} ]; then

ext=""

name="plaintext"

uncomp="cat"

else

return 1;

return 0;

}

# ---------------------------------------------------------------------------

# Apply a patch and check it goes in cleanly

# First param is patch name (e.g. patch-2.4.9-ac5) - without path or extension

applyPatch () {

echo -n "Applying $1 (${name})... "

if $uncomp ${patchdir}/$1${ext} | patch -p1 -s -N -E -d $sourcedir

then

echo "done."

else

echo "failed. Clean up yourself."

return 1;

if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]

then

echo "Aborting. Reject files found."

return 1;

# Remove backup files

find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;

return 0;

}

# ---------------------------------------------------------------------------

# arg1 is patch filename

reversePatch () {

echo -n "Reversing $1 (${name}) ... "

if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir

then

echo "done."

else

echo "failed. Clean it up."

exit 1

if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]

then

echo "Aborting. Reject files found."

return 1

# Remove backup files

find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;

return 0

}

# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION

# force $TMPFILEs below to be in local directory: a slash character prevents

# the dot command from using the search path.

TMPFILE=`mktemp ./.tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }

grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE

tr -d [:blank:] < $TMPFILE > $TMPFILE.1

. $TMPFILE.1

rm -f $TMPFILE*

if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ]

then

echo "unable to determine current kernel version" >&2

exit 1

NAME=`grep ^NAME $sourcedir/Makefile`

NAME=${NAME##*=}

echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($NAME)"

# strip EXTRAVERSION to just a number (drop leading '.' and trailing additions)

EXTRAVER=

if [ x$EXTRAVERSION != "x" ]

then

EXTRAVER=${EXTRAVERSION#.}

EXTRAVER=${EXTRAVER%%[[:punct:]]*}

#echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"

#echo "stopvers=$stopvers"

if [ $stopvers != "default" ]; then

STOPSUBLEVEL=`echo $stopvers | cut -d. -f3`

STOPEXTRA=`echo $stopvers | cut -d. -f4`

STOPFULLVERSION=${stopvers%%.$STOPEXTRA}

#echo "#___STOPSUBLEVEL=/$STOPSUBLEVEL/, STOPEXTRA=/$STOPEXTRA/"

else

STOPSUBLEVEL=9999

STOPEXTRA=9999

# This all assumes a 2.6.x[.y] kernel tree.

# Don't allow backwards/reverse patching.

if [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then

backwards

if [ x$EXTRAVER != "x" ]; then

CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER"

else

CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"

if [ x$EXTRAVER != "x" ]; then

echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL"

patch="patch-${CURRENTFULLVERSION}"

findFile $patchdir/${patch} || noFile ${patch}

reversePatch ${patch} || exit 1

# now current is 2.6.x, with no EXTRA applied,

# so update to target SUBLEVEL (2.6.SUBLEVEL)

# and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested.

# If not ending sublevel is specified, it is incremented until

# no further sublevels are found.

if [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then

while : # incrementing SUBLEVEL (s in v.p.s)

CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"

EXTRAVER=

if [ x$STOPFULLVERSION = x$CURRENTFULLVERSION ]; then

echo "Stopping at $CURRENTFULLVERSION base as requested."

break

SUBLEVEL=$(($SUBLEVEL + 1))

FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"

#echo "#___ trying $FULLVERSION ___"

if [ $(($SUBLEVEL)) -gt $(($STOPSUBLEVEL)) ]; then

echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)"

exit 1

patch=patch-$FULLVERSION

# See if the file exists and find extension

findFile $patchdir/${patch} || noFile ${patch}

# Apply the patch and check all is OK

applyPatch $patch || break

done

#echo "#___sublevel all done"

# There is no incremental searching for extraversion...

if [ "$STOPEXTRA" != "" ]; then

while : # just to allow break

# apply STOPEXTRA directly (not incrementally) (x in v.p.s.x)

FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$STOPEXTRA"

#echo "#... trying $FULLVERSION ..."

patch=patch-$FULLVERSION

# See if the file exists and find extension

findFile $patchdir/${patch} || noFile ${patch}

# Apply the patch and check all is OK

applyPatch $patch || break

#echo "#___extraver all done"

break

done

if [ x$gotac != x ]; then

# Out great user wants the -ac patches

# They could have done -ac (get latest) or -acxx where xx=version they want

if [ $gotac = "-ac" ]; then

# They want the latest version

HIGHESTPATCH=0

for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.*

ACVALUE=`echo $PATCHNAMES | sed -e 's/^.*patch-[0-9.]*-ac$[0-9]*$.*/\1/'`

# Check it is actually a recognised patch type

findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${ACVALUE} || break

if [ $ACVALUE -gt $HIGHESTPATCH ]; then

HIGHESTPATCH=$ACVALUE

done

if [ $HIGHESTPATCH -ne 0 ]; then

findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} || break

applyPatch patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH}

else

echo "No -ac patches found"

else

# They want an exact version

findFile $patchdir/patch-${CURRENTFULLVERSION}${gotac} || {

echo "Sorry, I couldn't find the $gotac patch for $CURRENTFULLVERSION. Hohum."

exit 1

}

applyPatch patch-${CURRENTFULLVERSION}${gotac}

linux/scripts/patch-kernel at master · scumbag-pull-request/linux · GitHub

Expand file tree

Breadcrumbs

patch-kernel

Latest commit

History

Breadcrumbs

patch-kernel

File metadata and controls