1#! /bin/sh -e 2 3# BSD LICENSE 4# 5# Copyright 2016 6WIND S.A. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 11# * Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# * Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in 15# the documentation and/or other materials provided with the 16# distribution. 17# * Neither the name of 6WIND S.A. nor the names of its 18# contributors may be used to endorse or promote products derived 19# from this software without specific prior written permission. 20# 21# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 33print_usage () 34{ 35 echo "usage: $(basename $0) [-h] <git_range>" 36} 37 38print_help () 39{ 40 print_usage 41 cat <<- END_OF_HELP 42 43 Find fixes to backport on previous versions. 44 It looks for the word "fix" in the headline or a tag "Fixes" or "Reverts". 45 The oldest bug origin is printed as well as partially fixed versions. 46 END_OF_HELP 47} 48 49usage_error () # <message> 50{ 51 echo "$*" >&2 52 print_usage >&2 53 exit 1 54} 55 56while getopts h ARG ; do 57 case $ARG in 58 h ) print_help ; exit 0 ;; 59 ? ) print_usage >&2 ; exit 1 ;; 60 esac 61done 62shift $(($OPTIND - 1)) 63[ $# -ge 1 ] || usage_error 'range argument required' 64range="$*" 65 66# get major release version of a commit 67commit_version () # <hash> 68{ 69 # use current branch as history reference 70 local refbranch=$(git rev-parse --abbrev-ref HEAD) 71 local tag=$( (git tag -l --contains $1 --merged $refbranch 2>&- || 72 # tag --merged option has been introduced in git 2.7.0 73 # below is a fallback in case of old git version 74 for t in $(git tag -l --contains $1) ; do 75 git branch $refbranch --contains $t | 76 sed "s,.\+,$t," 77 done) | 78 head -n1) 79 if [ -z "$tag" ] ; then 80 # before -rc1 tag of release in progress 81 make showversion | cut -d'.' -f-2 82 else 83 echo $tag | sed 's,^v,,' | sed 's,-rc.*,,' 84 fi 85} 86 87# get bug origin hashes of a fix 88origin_filter () # <hash> 89{ 90 git log --format='%b' -1 $1 | 91 sed -n 's,^ *\([Ff]ixes\|[Rr]everts\): *\([0-9a-f]*\).*,\2,p' 92} 93 94# get oldest major release version of bug origins 95origin_version () # <origin_hash> ... 96{ 97 for origin in $* ; do 98 # check hash is valid 99 git rev-parse -q --verify $1 >&- || continue 100 # get version of this bug origin 101 local origver=$(commit_version $origin) 102 local roothashes="$(origin_filter $origin)" 103 if [ -n "$roothashes" ] ; then 104 # look chained fix of fix recursively 105 local rootver="$(origin_version $roothashes)" 106 [ -n "$rootver" ] || continue 107 echo "$rootver (partially fixed in $origver)" 108 else 109 echo "$origver" 110 fi 111 # filter the oldest origin 112 done | sort -uV | head -n1 113} 114 115# print a marker for stable tag presence 116stable_tag () # <hash> 117{ 118 if git log --format='%b' -1 $1 | grep -qi '^Cc: *stable@dpdk.org' ; then 119 echo 'S' 120 else 121 echo '-' 122 fi 123} 124 125git log --oneline --reverse $range | 126while read id headline ; do 127 origins=$(origin_filter $id) 128 stable=$(stable_tag $id) 129 [ "$stable" = "S" ] || [ -n "$origins" ] || echo "$headline" | grep -q fix || continue 130 version=$(commit_version $id) 131 if [ -n "$origins" ] ; then 132 origver="$(origin_version $origins)" 133 [ -n "$origver" ] || continue 134 # ignore fix of bug introduced in the same release 135 ! echo "$origver" | grep -q "^$version" || continue 136 else 137 origver='N/A' 138 fi 139 printf '%s %7s %s %s (%s)\n' $version $id $stable "$headline" "$origver" 140done 141