189 lines
4.6 KiB
Bash
Executable File
189 lines
4.6 KiB
Bash
Executable File
#!/bin/bash
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set -e
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length=50
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die() {
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echo "E: $@" >&2
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exit 1
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}
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warn() {
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echo "W: $@" >&2
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}
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uncompress_patch() {
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patch=$1
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case "$patch" in
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*.bz2) bzcat $patch ;;
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*.gz) zcat $patch ;;
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*) cat $patch ;;
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esac
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}
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find_patch() {
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patch=$1
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if [ -f "$patch" ]; then
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echo "$patch"
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elif [ -f "$patch.bz2" ]; then
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echo "$patch.bz2"
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elif [ -f "$patch.gz" ]; then
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echo "$patch.gz"
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else
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die "$patch is in the series, but doesn't exist!"
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fi
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}
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apply_patch() {
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patch=$(find_patch $home/$1)
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base=$1
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if uncompress_patch "$patch" | patch -p1 --fuzz=1 -f -s -t --no-backup-if-mismatch; then
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printf "%-${length}s\tOK (+)\n" "$base"
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else
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printf "%-${length}s\tFAIL (+)\n" "$base"
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exit 1
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fi
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}
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deapply_patch() {
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patch=$(find_patch $home/$1)
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base=$1
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if uncompress_patch "$patch" | patch -p1 -f -s -t -R --no-backup-if-mismatch; then
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printf "%-${length}s\tOK (-)\n" "$base"
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else
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printf "%-${length}s\tFAIL (-)\n" "$base"
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exit 1
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fi
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}
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unpatch_series() {
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series=$1
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tac $series | while read action patch; do
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case "$action" in
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+) deapply_patch $patch ;;
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-) apply_patch $patch ;;
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X)
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bakfile="$(dirname $patch)/.$(basename $patch).bak"
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if [ -f "$bakfile" ]; then
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mv -f "$bakfile" "$patch"
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printf "%-${length}s\tRESTORED (X)\n" "$patch"
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else
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printf "%-${length}s\tNO BACKUP (X)\n" "$patch"
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fi
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;;
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esac
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done
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echo "--> $(basename $series) fully unapplied."
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}
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patch_series() {
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series=$1
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[ -f "$series" ] || return
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while read action patch; do
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case "$action" in
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+) apply_patch $patch ;;
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-) deapply_patch $patch ;;
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X)
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bakfile="$(dirname $patch)/.$(basename $patch).bak"
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if [ -f "$patch" ]; then
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mv -f "$patch" "$bakfile"
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printf "%-${length}s\tREMOVED (X)\n" "$patch"
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else
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printf "%-${length}s\tNO FILE (X)\n" "$patch"
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fi
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;;
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esac
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done < $series
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echo "--> $(basename $series) fully applied."
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}
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if ! [ -d Documentation ] || ! [ -d kernel ]; then
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die 'Not in kernel top level directory. Exiting'
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exit 1
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fi
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# for THIS particular version of the source package
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version=${override_version:-@version@}
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revision=$(echo $version | sed -ne 's,^\(.*\)-\([^-]*\)$,\2,p')
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upstream=$(echo $version | sed -ne 's,^\(.*\)-\([^-]*\)$,\1,p')
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revisions_count=0
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for i in ${override_revisions:-@revisions@}; do
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revisions[$revisions_count]=$i
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revisions_count=$(($revisions_count + 1))
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done
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home=${home:-/usr/src/kernel-patches/all/$upstream/debian}
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if [ -f version.Debian ]; then
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current=$(cat version.Debian)
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current_rev=$(echo $current | sed -ne 's,^\(.*\)-\([^-]*\)$,\2,p')
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current_up=$(echo $current | sed -ne 's,^\(.*\)-\([^-]*\)$,\1,p')
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if [ "$current" = "$upstream" ]; then
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current_rev=0
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fi
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else
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warn "No version.Debian file, assuming pristine Linux $upstream"
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current=$upstream
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current_rev=0
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fi
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target=${1:-$version}
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target_rev=$(echo $target | sed -ne 's,^\(.*\)-\([^-]*\)$,\2,p')
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target_up=$(echo $target | sed -ne 's,^\(.*\)-\([^-]*\)$,\1,p')
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# Sanity checks
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if dpkg --compare-versions "$target_up" ne "$upstream"; then
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die "Upstream $target_up doesn't match $upstream!"
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# We don't have that version out yet!
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elif [ ! -n "$target_rev" ] ||
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( dpkg --compare-versions "$target_rev" ne "$target" &&
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dpkg --compare-versions "$target_rev" gt "$revision" ); then
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year=$(($(date +%Y) + 1))
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die "Can't patch to nonexistent revision $target_rev (wait until $year)"
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fi
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# At this point, we must handle three cases.
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# 1. $target_rev is greater than $current_rev. We must patch forward for this.
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# 2. $target_rev is less than $current_rev. We must reverse the list of series,
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# reverse each used series (tac) and unapply applied patches and vice versa.
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# 3. $target_rev is undefined, and $target is $upstream.
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if dpkg --compare-versions "$target_rev" eq "$current_rev"; then
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echo "Nothing to do, exiting."
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exit 0
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else
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cur_index=$revisions_count
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while [ $cur_index -gt 0 ]; do
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[ ${revisions[$(($cur_index - 1))]} == $current_rev ] && break
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cur_index=$(($cur_index - 1))
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done
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target_index=$revisions_count
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while [ $target_index -gt 0 ]; do
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[ ${revisions[$(($target_index - 1))]} == $target_rev ] && break
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target_index=$(($target_index - 1))
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done
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if [ $target_index -gt $cur_index ]; then
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while [ $target_index -gt $cur_index ]; do
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series="$home/series/${upstream}-${revisions[$cur_index]}"
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[ -f "$series" ] && patch_series $series
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cur_index=$(($cur_index + 1))
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done
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elif [ $target_index -lt $cur_index ]; then
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while [ $target_index -lt $cur_index ]; do
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cur_index=$(($cur_index - 1))
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series="$home/series/${upstream}-${revisions[$cur_index]}"
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[ -f "$series" ] && unpatch_series $series
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done
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fi
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fi
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echo $target > version.Debian
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# vim:noet:ai:ts=4
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