You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
2.5 KiB
106 lines
2.5 KiB
6 years ago
|
# Copyright (C) 2017, Red Hat, Inc.
|
||
|
|
#
|
||
|
|
# Core configuration file library.
|
||
|
|
|
||
|
|
# Configurations are determined by sha values. The way to determine is by
|
||
|
|
# the special text:
|
||
|
|
# $FILE_COMMENT_TYPE -*- cfg-sha: $SHA256 -*-
|
||
|
|
|
||
|
|
export LC_ALL=C
|
||
|
|
|
||
|
|
# check required binaries
|
||
|
|
__check_reqd_binaries() {
|
||
|
|
local BIN __binaries=("egrep" "sort" "sha256sum" "sed")
|
||
|
|
for BIN in $__binaries; do
|
||
|
|
if ! type -P $BIN >/dev/null 2>&1; then
|
||
|
|
echo "Binary $BIN not found. Please install."
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
# Calculates a sha from a file
|
||
|
|
# The algorithm for generating a sha from a config is thus:
|
||
|
|
#
|
||
|
|
# 1. Remove all comment lines and blank lines
|
||
|
|
# 2. Sort the content
|
||
|
|
# 3. generate the sha-256 sum
|
||
|
|
#
|
||
|
|
# From a script perspective, this means:
|
||
|
|
# egrep -v ^\# %file% | egrep -v ^$ | sort -u | sha256sum
|
||
|
|
#
|
||
|
|
# Params:
|
||
|
|
# $1 = output variable
|
||
|
|
# $2 = file to use to calculate the shasum
|
||
|
|
# $3 = file comment type (defaults to # if unspecified)
|
||
|
|
calc_sha() {
|
||
|
|
__check_reqd_binaries
|
||
|
|
|
||
|
|
if [ "$1" == "" ]; then
|
||
|
|
echo "Please pass in a storage variable."
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
local __resultvar=$1
|
||
|
|
__retval=1
|
||
|
|
shift
|
||
|
|
|
||
|
|
local __file=$1
|
||
|
|
local cmnt=${2:-#}
|
||
|
|
|
||
|
|
if [ -f "$__file" ]; then
|
||
|
|
local __shasum=$(egrep -v ^"$cmnt" "$__file" | egrep -v ^$ | sort -u | sha256sum -t | cut -d" " -f1)
|
||
|
|
eval $__resultvar="'$__shasum'"
|
||
|
|
__retval=0
|
||
|
|
fi
|
||
|
|
return $__retval
|
||
|
|
}
|
||
|
|
|
||
|
|
# Retrieves a sha stored in a file
|
||
|
|
# Param:
|
||
|
|
# $1 = output variable
|
||
|
|
# $2 = file to use to calculate the shasum
|
||
|
|
# $3 = file comment type (defaults to # if unspecified)
|
||
|
|
retr_sha() {
|
||
|
|
__check_reqd_binaries
|
||
|
|
|
||
|
|
if [ "$1" == "" ]; then
|
||
|
|
echo "Please pass in a storage variable."
|
||
|
|
return 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
local __resultvar=$1
|
||
|
|
__retval=1
|
||
|
|
shift
|
||
|
|
|
||
|
|
local __file=$1
|
||
|
|
local cmnt=${2:-#}
|
||
|
|
|
||
|
|
if [ -f "$__file" ]; then
|
||
|
|
if grep -q "$cmnt -\*- cfg-sha:" "$__file"; then
|
||
|
|
local __shasum=$(grep "$cmnt -\*- cfg-sha:" "$__file" | sed -e "s@$cmnt -\*- cfg-sha: @@" | cut -d" " -f1)
|
||
|
|
eval $__resultvar="'$__shasum'"
|
||
|
|
__retval=0
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
return $__retval
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
# Set a config value
|
||
|
|
# set_conf dpdk_build_tree parameter value
|
||
|
|
# dpdk_build_tree is the directory where the .config lives
|
||
|
|
# parameter is the config parameter
|
||
|
|
# value is the value to set for the config parameter
|
||
|
|
set_conf() {
|
||
|
|
c="$1/.config"
|
||
|
|
shift
|
||
|
|
|
||
|
|
if grep -q "$1" "$c"; then
|
||
|
|
sed -i "s:^$1=.*$:$1=$2:g" $c
|
||
|
|
else
|
||
|
|
echo $1=$2 >> "$c"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|