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Diffstat (limited to '')
| -rwxr-xr-x | modules.d/30convertfs/convertfs.sh | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/modules.d/30convertfs/convertfs.sh b/modules.d/30convertfs/convertfs.sh new file mode 100755 index 0000000..58fa56d --- /dev/null +++ b/modules.d/30convertfs/convertfs.sh @@ -0,0 +1,193 @@ +#!/bin/bash + +type ismounted > /dev/null 2>&1 || . /lib/dracut-lib.sh + +ROOT="$1" + +if [[ ! -d $ROOT ]]; then + echo "Usage: $0 <rootdir>" + exit 1 +fi + +if [[ $ROOT -ef / ]]; then + echo "Can't convert the running system." + echo "Please boot with 'rd.convertfs' on the kernel command line," + echo "to update with the help of the initramfs," + echo "or run this script from a rescue system." + exit 1 +fi + +while [[ $ROOT != "${ROOT%/}" ]]; do + ROOT=${ROOT%/} +done + +if [ ! -L "$ROOT"/var/run -a -e "$ROOT"/var/run ]; then + echo "Converting /var/run to symlink" + mv -f "$ROOT"/var/run "$ROOT"/var/run.runmove~ + ln -sfn ../run "$ROOT"/var/run +fi + +if [ ! -L "$ROOT"/var/lock -a -e "$ROOT"/var/lock ]; then + echo "Converting /var/lock to symlink" + mv -f "$ROOT"/var/lock "$ROOT"/var/lock.lockmove~ + ln -sfn ../run/lock "$ROOT"/var/lock +fi + +needconvert() { + for dir in "$ROOT/bin" "$ROOT/sbin" "$ROOT/lib" "$ROOT/lib64"; do + if [[ -e $dir ]]; then + [[ -L $dir ]] || return 0 + fi + done + return 1 +} + +if ! [ -e "$ROOT/usr/bin" ]; then + echo "$ROOT/usr/bin does not exist!" + echo "Make sure, the kernel command line has enough information" + echo "to mount /usr (man dracut.cmdline)" + exit 1 +fi + +if ! needconvert; then + echo "Your system is already converted." + exit 0 +fi + +testfile="$ROOT/.usrmovecheck$$" +rm -f -- "$testfile" +: > "$testfile" +if [[ ! -e $testfile ]]; then + echo "Cannot write to $ROOT/" + exit 1 +fi +rm -f -- "$testfile" + +testfile="$ROOT/usr/.usrmovecheck$$" +rm -f -- "$testfile" +: > "$testfile" +if [[ ! -e $testfile ]]; then + echo "Cannot write to $ROOT/usr/" + exit 1 +fi +rm -f -- "$testfile" + +find_mount() { + local dev wanted_dev + wanted_dev="$(readlink -e -q "$1")" + while read -r dev _ || [ -n "$dev" ]; do + [ "$dev" = "$wanted_dev" ] && echo "$dev" && return 0 + done < /proc/mounts + return 1 +} + +# clean up after ourselves no matter how we die. +cleanup() { + echo "Something failed. Move back to the original state" + for dir in "$ROOT/bin" "$ROOT/sbin" "$ROOT/lib" "$ROOT/lib64" \ + "$ROOT/usr/bin" "$ROOT/usr/sbin" "$ROOT/usr/lib" \ + "$ROOT/usr/lib64"; do + [[ -d "${dir}.usrmove-new" ]] && rm -fr -- "${dir}.usrmove-new" + if [[ -d "${dir}.usrmove-old" ]]; then + mv "$dir" "${dir}.del~" + mv "${dir}.usrmove-old" "$dir" + rm -fr -- "${dir}.del~" + fi + done +} + +trap 'ret=$?; [[ $ret -ne 0 ]] && cleanup;exit $ret;' EXIT +trap 'exit 1;' SIGINT + +ismounted "$ROOT/usr" || CP_HARDLINK="-l" + +set -e + +# merge / and /usr in new dir in /usr +for dir in bin sbin lib lib64; do + rm -rf -- "$ROOT/usr/${dir}.usrmove-new" + [[ -L "$ROOT/$dir" ]] && continue + [[ -d "$ROOT/$dir" ]] || continue + echo "Make a copy of \`$ROOT/usr/$dir'." + [[ -d "$ROOT/usr/$dir" ]] \ + && cp -ax -l "$ROOT/usr/$dir" "$ROOT/usr/${dir}.usrmove-new" + echo "Merge the copy with \`$ROOT/$dir'." + [[ -d "$ROOT/usr/${dir}.usrmove-new" ]] \ + || mkdir -p "$ROOT/usr/${dir}.usrmove-new" + cp -axT $CP_HARDLINK --backup --suffix=.usrmove~ "$ROOT/$dir" "$ROOT/usr/${dir}.usrmove-new" + echo "Clean up duplicates in \`$ROOT/usr/$dir'." + # delete all symlinks that have been backed up + find "$ROOT/usr/${dir}.usrmove-new" -type l -name '*.usrmove~' -delete || : + # replace symlink with backed up binary + # shellcheck disable=SC2156 + find "$ROOT/usr/${dir}.usrmove-new" \ + -name '*.usrmove~' \ + -type f \ + -exec bash -c 'p="{}";o=${p%%%%.usrmove~}; + [[ -L "$o" ]] && mv -f "$p" "$o"' ';' || : +done +# switch over merged dirs in /usr +for dir in bin sbin lib lib64; do + [[ -d "$ROOT/usr/${dir}.usrmove-new" ]] || continue + echo "Switch to new \`$ROOT/usr/$dir'." + rm -fr -- "$ROOT/usr/${dir}.usrmove-old" + mv "$ROOT/usr/$dir" "$ROOT/usr/${dir}.usrmove-old" + mv "$ROOT/usr/${dir}.usrmove-new" "$ROOT/usr/$dir" +done + +# replace dirs in / with links to /usr +for dir in bin sbin lib lib64; do + [[ -L "$ROOT/$dir" ]] && continue + [[ -d "$ROOT/$dir" ]] || continue + echo "Create \`$ROOT/$dir' symlink." + rm -fr -- "$ROOT/${dir}.usrmove-old" || : + mv "$ROOT/$dir" "$ROOT/${dir}.usrmove-old" + ln -sfn usr/$dir "$ROOT/$dir" +done + +echo "Clean up backup files." +# everything seems to work; cleanup +for dir in bin sbin lib lib64; do + # if we get killed in the middle of "rm -rf", ensure not to leave + # an incomplete directory, which is moved back by cleanup() + [[ -d "$ROOT/usr/${dir}.usrmove-old" ]] \ + && mv "$ROOT/usr/${dir}.usrmove-old" "$ROOT/usr/${dir}.usrmove-old~" + [[ -d "$ROOT/${dir}.usrmove-old" ]] \ + && mv "$ROOT/${dir}.usrmove-old" "$ROOT/${dir}.usrmove-old~" +done + +for dir in bin sbin lib lib64; do + if [[ -d "$ROOT/usr/${dir}.usrmove-old~" ]]; then + rm -rf -- "$ROOT/usr/${dir}.usrmove-old~" + fi + + if [[ -d "$ROOT/${dir}.usrmove-old~" ]]; then + rm -rf -- "$ROOT/${dir}.usrmove-old~" + fi +done + +for dir in lib lib64; do + [[ -d "$ROOT/$dir" ]] || continue + for lib in "$ROOT"/usr/"${dir}"/lib*.so*.usrmove~; do + [[ -f $lib ]] || continue + mv "$lib" "${lib/.so/_so}" + done +done + +set +e + +echo "Run ldconfig." +ldconfig -r "$ROOT" + +if [[ -f "$ROOT"/etc/selinux/config ]]; then + # shellcheck disable=SC1090 + . "$ROOT"/etc/selinux/config +fi + +if [ -n "$(command -v setfiles)" ] && [ "$SELINUX" != "disabled" ] && [ -f /etc/selinux/"${SELINUXTYPE}"/contexts/files/file_contexts ]; then + echo "Fixing SELinux labels" + setfiles -r "$ROOT" -p /etc/selinux/"${SELINUXTYPE}"/contexts/files/file_contexts "$ROOT"/sbin "$ROOT"/bin "$ROOT"/lib "$ROOT"/lib64 "$ROOT"/usr/lib "$ROOT"/usr/lib64 "$ROOT"/etc/ld.so.cache "$ROOT"/var/cache/ldconfig || : +fi + +echo "Done." +exit 0 |