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#!/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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