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#!/bin/bash
home="$(dirname "${0}")"
target="${home}/repo"
repos=('core' 'extra' 'community' 'testing' 'community-testing' 'staging' 'multilib')
arches=('i686' 'x86_64')
lock='/tmp/mirrorsync.lck'
tmp="$(mktemp -d)"
extractinc=(--include={opt,{,usr/}{lib{,32},{s,}bin}}'/*')
getpkgname() {
local tmp
tmp=${1##*/}
echo ${tmp%-*.pkg.tar.*}
}
create_file_list() {
local pkgname=$(getpkgname "$1")
tmppkgdir=$tmp/tmp/$repodir/$pkgname
mkdir -p "$tmppkgdir"
if [[ -f $tmp/cache/$repodir/$pkgname/links ]]; then
# reuse the cached file
mv "$tmp/cache/$repodir/$pkgname/links" "$tmppkgdir/links"
return 0
else
echo "$repo/$arch: $pkgname"
mkdir -p "$tmppkgdir/pkg"
bsdtar -xof "$pkg" -C "$tmppkgdir/pkg" "${extractinc[@]}" 2>/dev/null
find "$tmppkgdir/pkg" -type f -exec readelf -d {} + 2>/dev/null |
sed -nr 's/.*Shared library: \[(.*)\]$/\1/p' | sort -u >"$tmppkgdir/links"
rm -rf "$tmppkgdir/pkg"
return 1
fi
}
generate_links() {
for repo in ${repos[@]}; do
for arch in ${arches[@]}; do
repodir=${repo}/os/${arch}
[ ! -f ${target}/$repodir/$repo.db ] && continue
echo "$repo/$arch..."
cached=false
# extract old file archive
if [ -f ${target}/${repodir}/${repo}.links.tar.gz ]; then
mkdir -p ${tmp}/cache/${repodir}
bsdtar -xf ${target}/${repodir}/${repo}.links.tar.gz -C ${tmp}/cache/${repodir}
cached=true
fi
# create file lists
for pkg in "$target/$repodir"/*.pkg.tar.?z; do
# not a file or symlink to file
[[ -f $pkg ]] || continue
# skip -any packages
[[ $pkg = *-any.pkg.tar.?z ]] && continue
create_file_list "$pkg"
if (( $? != 0 )); then
cached=false
fi
done
# create new file archive
if ! $cached; then
# at least one package has changed, so let's rebuild the archive
pkgdir=${target}/${repodir}
mkdir -p $pkgdir
bsdtar --exclude=*.tar.* -czf ${pkgdir}/${repo}.links.tar.gz -C ${tmp}/tmp/${repodir} .
fi
done
done
}
trap "rm -rf '${tmp}' '${lock}'" EXIT
renice +10 -p $$ > /dev/null
{
flock -n 9 || exit 42
generate_links
} 9>"$lock"
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