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From c1aa1bc599f0ced53b5e9d21d01a03d78ae2b37f Mon Sep 17 00:00:00 2001
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Mon, 29 Apr 2019 20:05:37 +0200
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Subject: [PATCH] examples: Some shell fixes to cbq.init
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1465646
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Upstream Status: iproute2.git commit 2313b6bfe4f5e
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commit 2313b6bfe4f5e6b60fcdfaaeaa1eabcfd3f550f4
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Author: Phil Sutter <phil@nwl.cc>
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Date: Thu Aug 17 19:09:31 2017 +0200
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examples: Some shell fixes to cbq.init
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This addresses the following issues:
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- $@ is an array, so don't use it in quoted strings - use $* instead.
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- Add missing quotes to components of [ ] expressions. These are not
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strictly necessary since the output of 'wc -l' should be a single word
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only, but in case of errors, bash prints "integer expression expected"
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instead of "too many arguments".
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- Use -print0/-0 when piping from find to xargs to allow for filenames
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which contain whitespace.
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- Quote arguments to 'eval' to prevent word-splitting.
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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---
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examples/cbq.init-v0.7.3 | 24 ++++++++++++------------
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1 file changed, 12 insertions(+), 12 deletions(-)
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diff --git a/examples/cbq.init-v0.7.3 b/examples/cbq.init-v0.7.3
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index 1bc0d446f8983..66448d88f0053 100644
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--- a/examples/cbq.init-v0.7.3
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+++ b/examples/cbq.init-v0.7.3
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@@ -532,7 +532,7 @@ cbq_off () {
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### Prefixed message
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cbq_message () {
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- echo -e "**CBQ: $@"
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+ echo -e "**CBQ: $*"
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} # cbq_message
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### Failure message
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@@ -560,15 +560,15 @@ cbq_time2abs () {
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### Display CBQ setup
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cbq_show () {
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for dev in `cbq_device_list`; do
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- [ `tc qdisc show dev $dev| wc -l` -eq 0 ] && continue
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+ [ "`tc qdisc show dev $dev| wc -l`" -eq 0 ] && continue
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echo -e "### $dev: queueing disciplines\n"
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tc $1 qdisc show dev $dev; echo
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- [ `tc class show dev $dev| wc -l` -eq 0 ] && continue
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+ [ "`tc class show dev $dev| wc -l`" -eq 0 ] && continue
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echo -e "### $dev: traffic classes\n"
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tc $1 class show dev $dev; echo
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- [ `tc filter show dev $dev| wc -l` -eq 0 ] && continue
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+ [ "`tc filter show dev $dev| wc -l`" -eq 0 ] && continue
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echo -e "### $dev: filtering rules\n"
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tc $1 filter show dev $dev; echo
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done
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@@ -585,7 +585,7 @@ cbq_init () {
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### Gather all DEVICE fields from $1/cbq-*
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DEVFIELDS=`find $1 -maxdepth 1 \( -type f -or -type l \) -name 'cbq-*' \
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- -not -name '*~' | xargs sed -n 's/#.*//; \
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+ -not -name '*~' -print0 | xargs -0 sed -n 's/#.*//; \
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s/[[:space:]]//g; /^DEVICE=[^,]*,[^,]*\(,[^,]*\)\?/ \
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{ s/.*=//; p; }'| sort -u`
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[ -z "$DEVFIELDS" ] &&
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@@ -593,7 +593,7 @@ cbq_init () {
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### Check for different DEVICE fields for the same device
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DEVICES=`echo "$DEVFIELDS"| sed 's/,.*//'| sort -u`
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- [ `echo "$DEVICES"| wc -l` -ne `echo "$DEVFIELDS"| wc -l` ] &&
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+ [ "`echo "$DEVICES"| wc -l`" -ne "`echo "$DEVFIELDS"| wc -l`" ] &&
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cbq_failure "different DEVICE fields for single device!\n$DEVFIELDS"
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} # cbq_init
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@@ -618,7 +618,7 @@ cbq_load_class () {
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PRIO_MARK=$PRIO_MARK_DEFAULT
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PRIO_REALM=$PRIO_REALM_DEFAULT
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- eval `echo "$CFILE"| grep -E "^($CBQ_WORDS)="`
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+ eval "`echo "$CFILE"| grep -E "^($CBQ_WORDS)="`"
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### Require RATE/WEIGHT
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[ -z "$RATE" -o -z "$WEIGHT" ] &&
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@@ -661,7 +661,7 @@ if [ "$1" = "compile" ]; then
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### echo-only version of "tc" command
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tc () {
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- echo "$TC $@"
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+ echo "$TC $*"
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} # tc
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elif [ -n "$CBQ_DEBUG" ]; then
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@@ -669,13 +669,13 @@ elif [ -n "$CBQ_DEBUG" ]; then
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### Logging version of "ip" command
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ip () {
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- echo -e "\n# ip $@" >> $CBQ_DEBUG
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+ echo -e "\n# ip $*" >> $CBQ_DEBUG
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$IP "$@" 2>&1 | tee -a $CBQ_DEBUG
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} # ip
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### Logging version of "tc" command
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tc () {
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- echo -e "\n# tc $@" >> $CBQ_DEBUG
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+ echo -e "\n# tc $*" >> $CBQ_DEBUG
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$TC "$@" 2>&1 | tee -a $CBQ_DEBUG
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} # tc
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else
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@@ -711,8 +711,8 @@ if [ "$1" != "compile" -a "$2" != "nocache" -a -z "$CBQ_DEBUG" ]; then
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### validate the cache
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[ "$2" = "invalidate" -o ! -f $CBQ_CACHE ] && VALID=0
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if [ $VALID -eq 1 ]; then
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- [ `find $CBQ_PATH -maxdepth 1 -newer $CBQ_CACHE| \
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- wc -l` -gt 0 ] && VALID=0
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+ [ "`find $CBQ_PATH -maxdepth 1 -newer $CBQ_CACHE| \
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+ wc -l`" -gt 0 ] && VALID=0
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fi
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### compile the config if the cache is invalid
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--
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2.20.1
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