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Marcin Nowakowski f07726048d Fix handling of backlash character in LINUX_COMPILE_BY name

When using a domain login, `whoami` returns the login in
user\domain format. This leads to either warnings on unrecognised
escape sequences or escaped characters being generated for the user.
This patch ensures that any backslash is escaped to a double-backslash
to make sure the name is preserved correctly. This patch does not
enforce escaping on the KBUILD_BUILD_USER variable, as this is something
the user has control of and can escape if required.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski.000@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

2011-04-29 15:55:45 +02:00

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#!/bin/sh

TARGET=$1 ARCH=$2 SMP=$3 PREEMPT=$4 CC=$5

vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }

If compile.h exists already and we don't own autoconf.h

(i.e. we're not the same user who did make *config), don't

modify compile.h

So "sudo make install" won't change the "compiled by "

do "compiled by root"

if [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then vecho " SKIPPED $TARGET" exit 0 fi

Do not expand names

set -f

Fix the language to get consistent output

LC_ALL=C export LC_ALL

if [ -z "$KBUILD_BUILD_VERSION" ]; then if [ -r .version ]; then VERSION=cat .version else VERSION=0 echo 0 > .version fi else VERSION=$KBUILD_BUILD_VERSION fi

if [ -z "$KBUILD_BUILD_TIMESTAMP" ]; then TIMESTAMP=date else TIMESTAMP=$KBUILD_BUILD_TIMESTAMP fi if test -z "$KBUILD_BUILD_USER"; then LINUX_COMPILE_BY=$(whoami | sed 's/\/\\/') else LINUX_COMPILE_BY=$KBUILD_BUILD_USER fi if test -z "$KBUILD_BUILD_HOST"; then LINUX_COMPILE_HOST=hostname else LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST fi

UTS_VERSION="#$VERSION" CONFIG_FLAGS="" if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"

Truncate to maximum length

UTS_LEN=64 UTS_TRUNCATE="cut -b -$UTS_LEN"

Generate a temporary compile.h

( echo /* This file is auto generated, version $VERSION */ if [ -n "$CONFIG_FLAGS" ] ; then echo "/* $CONFIG_FLAGS */"; fi

echo #define UTS_MACHINE "$ARCH"

echo #define UTS_VERSION "echo $UTS_VERSION | $UTS_TRUNCATE"

echo #define LINUX_COMPILE_BY "echo $LINUX_COMPILE_BY | $UTS_TRUNCATE" echo #define LINUX_COMPILE_HOST "echo $LINUX_COMPILE_HOST | $UTS_TRUNCATE"

echo #define LINUX_COMPILER "$CC -v 2>&1 | tail -n 1" ) > .tmpcompile

Only replace the real compile.h if the new one is different,

in order to preserve the timestamp and avoid unnecessary

recompilations.

We don't consider the file changed if only the date/time changed.

A kernel config change will increase the generation number, thus

causing compile.h to be updated (including date/time) due to the

changed comment in the

first line.

if [ -r $TARGET ] &&
grep -v 'UTS_VERSION' $TARGET > .tmpver.1 &&
grep -v 'UTS_VERSION' .tmpcompile > .tmpver.2 &&
cmp -s .tmpver.1 .tmpver.2; then rm -f .tmpcompile else vecho " UPD $TARGET" mv -f .tmpcompile $TARGET fi rm -f .tmpver.1 .tmpver.2

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