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_bs_user=bs
_bs_group=bs
post_install() {
_mkuser
_disable_cow
chown -R $_bs_user:$_bs_group /etc/bs /srv/bs /var/log/bs
printf "%b\n" "$xx"
}
post_remove() {
_rmuser
rm -rf /etc/bs /srv/bs /var/log/bs
}
# ------------------------------------------------------------------------------
# helper functions for creating libbitcoin-server user / group
# ------------------------------------------------------------------------------
_mkuser() {
getent passwd $_bs_user &>/dev/null || {
echo -n "Creating libbitcoin-server user... "
grep -E "^$_bs_group:" /etc/group >/dev/null || groupadd $_bs_group
useradd -m -d /etc/bs -g $_bs_group -s /usr/bin/nologin $_bs_user
echo "done"
}
}
_rmuser() {
echo -n "Removing libbitcoin-server user... "
userdel -rf $_bs_user 2>/dev/null
echo "done"
}
# ------------------------------------------------------------------------------
# helper functions for disabling btrfs Copy-On-Write (CoW)
# https://wiki.archlinux.org/index.php/Btrfs#Copy-On-Write_.28CoW.29
# ------------------------------------------------------------------------------
# check if dir is btrfs
_is_btrfs() {
if [[ $(df -TP "$1" | tail -n 1 | awk '{print $2}') == 'btrfs' ]]; then
return 0
else
return 1
fi
}
# disable btrfs CoW
_chattrify() {
# original dir, with trailing slash stripped if it exists
_orig_dir=$( echo "$1" | sed 's@/$@@' )
# if original dir exists, back it up
[[ -d "$1" ]] && mv "$1" "${_orig_dir}"_old
# re-make original dir
mkdir -p "$1"
# set permissions on re-made dir
chmod "$2" "$1"
# disable btrfs CoW on re-made dir
chattr +C "$1"
# recursive copy to restore backed up dir while mainintaining disabled CoW
[[ -d "${_orig_dir}"_old ]] \
&& find "${_orig_dir}"_old -mindepth 1 -maxdepth 1 -exec cp -R '{}' "$1" \;
# set ownership on re-made dir
chown -R $3:$4 "$1"
# purge backed up dir
[[ -d "${_orig_dir}"_old ]] && rm -rf "${_orig_dir}"_old
}
# if blockchain or log dir has btrfs filesystem, disable CoW:
_disable_cow() {
for _dir in /srv/bs /var/log/bs; do
_is_btrfs "$_dir" && _chattrify "$_dir" "700" "$_bs_user" "$_bs_group"
done
}
read -d '' xx <<'EOF'
libbitcoin-server
=================
To run normally:
$ bs --initchain /path/to/bs/config/file
$ bs /path/to/bs/config/file
To run as a service:
$ sudo systemctl start bsinit # wait several mins for blockchain dir to init
$ sudo systemctl start bs
EOF
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