linux-kernel - [PATCH 1/2] merge_config.sh: do not print non-matching lines in the sed expressions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 26 Sep 2011 20:25:48 -0700
From:	Darren Hart <dvhart@...ux.intel.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	John Stultz <johnstul@...ibm.com>,
	Darren Hart <dvhart@...ux.intel.com>,
	Dmitry Fink <Dmitry.Fink@...m.com>
Subject: [PATCH 1/2] merge_config.sh: do not print non-matching lines in the sed expressions

The script picks up on comment lines and run into failed grep commands and
spew lots of warnings about "#" not being set and so forth.

sed will print non-matching lines without the -n option. Add -n and a p (print)
to each sed command. This will ensure only the CONFIG_* lines are used for
value comparison, and comment lines are ignored. # CONFIG_XYZ is not set are
still matched and not treated as comments. This addresses an issue Dmitry raised
without another pipe and call to grep.

Move the sed expression into a variable to avoid getting the regular expressions
in the two call sites out of sync.

Signed-off-by: Darren Hart <dvhart@...ux.intel.com>
CC: Dmitry Fink <Dmitry.Fink@...m.com>
---
 scripts/kconfig/merge_config.sh |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
index fda0139..a644724 100755
--- a/scripts/kconfig/merge_config.sh
+++ b/scripts/kconfig/merge_config.sh
@@ -25,11 +25,12 @@ MERGE_LIST=$*
 
 TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
 
+SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
+
 # Merge files, printing warnings on overrided values
 for MERGE_FILE in $MERGE_LIST ; do
 	echo "Merging $MERGE_FILE"
-	CFG_LIST=`cat $MERGE_FILE | \
-	  sed 's/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/'`
+	CFG_LIST=`cat $MERGE_FILE | sed -n "$SED_CONFIG_EXP"`
 	for CFG in $CFG_LIST ; do
 		grep -q -w $CFG $TMP_FILE
 		if [ $? == 0 ] ; then
@@ -53,10 +54,7 @@ done
 make KCONFIG_ALLCONFIG=$TMP_FILE alldefconfig
 
 # Check all specified config values took (might have missed-dependency issues)
-cat $TMP_FILE | while read line; do
-	CFG=`echo $line | \
-		sed 's/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/'`
-
+for CFG in `sed -n "$SED_CONFIG_EXP" $TMP_FILE`; do
 	REQUESTED_VAL=`grep -w -e "$CFG" $TMP_FILE`
 	ACTUAL_VAL=`grep -w -e "$CFG" .config`
 	if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
-- 
1.7.6.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/