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files >> //proc/self/root/proc/thread-self/root/usr/lib/dracut/modules.d/30convertfs/convertfs.sh
#!/bin/bash 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 mnt etc wanted_dev wanted_dev="$(readlink -e -q $1)" while read dev mnt etc || [ -n "$dev" ]; do [ "$dev" = "$wanted_dev" ] && echo "$dev" && return 0 done < /proc/mounts return 1 } # usage: ismounted <mountpoint> # usage: ismounted /dev/<device> if command -v findmnt >/dev/null; then ismounted() { findmnt "$1" > /dev/null 2>&1 } else ismounted() { if [ -b "$1" ]; then find_mount "$1" > /dev/null && return 0 return 1 fi while read a m a || [ -n "$m" ]; do [ "$m" = "$1" ] && return 0 done < /proc/mounts return 1 } fi # clean up after ourselves no matter how we die. cleanup() { echo "Something failed. Move back to the original state" for dir in "$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/${dir}.usrmove-new" -type l -name '*.usrmove~' -delete || : # replace symlink with backed up binary find "$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 [[ -d "$ROOT/usr/${dir}.usrmove-old~" ]] \ && rm -rf -- "$ROOT/usr/${dir}.usrmove-old~" || : [[ -d "$ROOT/${dir}.usrmove-old~" ]] \ && rm -rf -- "$ROOT/${dir}.usrmove-old~" || : 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" . $ROOT/etc/selinux/config if [ -n "$(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
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