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_bc_user=namecoin
_bc_group=namecoin
_datadir=/var/lib/namecoin
post_install() {
_mkuser
# disable Copy-On-Write (btrfs directories only)
for _dir in $_datadir; do
_is_btrfs "$_dir" && _disable_cow "$_dir"
done
mkdir -p $_datadir
chown -R $_bc_user:$_bc_group /etc/namecoin $_datadir
printf "%b\n" "$namecoin"
}
post_upgrade() {
_mkuser
mkdir -p $_datadir
chown -R $_bc_user:$_bc_group /etc/namecoin $_datadir
printf "%b\n" "$namecoin"
}
post_remove() {
_rmuser
rm -rf $_datadir
}
# ------------------------------------------------------------------------------
# helper functions for creating namecoin-core user / group
# ------------------------------------------------------------------------------
_mkuser() {
getent passwd $_bc_user &>/dev/null || {
echo -n "Creating namecoin user... "
grep -E "^$_bc_group:" /etc/group >/dev/null || groupadd $_bc_group
useradd -m -d /etc/namecoin -g $_bc_group -s /usr/bin/nologin $_bc_user 2>/dev/null
echo "done"
}
}
_rmuser() {
echo -n "Removing namecoin user... "
userdel -rf $_bc_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 [[ $(findmnt --target $1 --output FSTYPE --noheadings) == 'btrfs' ]]; then
return 0
else
return 1
fi
}
# disable btrfs CoW
_chattrify() {
# original dir, with trailing slash stripped if it exists
_orig_dir=$( 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 "$1"
# recursive copy to restore backed up dir while maintaining disabled CoW
[[ -d "${_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
}
_disable_cow() {
_chattrify "$1" "700" "$_bc_user" "$_bc_group"
}
read -d '' namecoin <<'EOF'
########################################################################
########################################################################
## ##
## namecoin Core ##
## ____________ ##
## ##
## To start namecoin-core: ##
## ##
## # systemctl start namecoin ##
## ##
## To communicate with namecoin-core as a normal user: ##
## ##
## $ mkdir -p ~/.namecoin ##
## $ cat > ~/.namecoin/namecoin.conf <<'EOF' ##
## rpcconnect=127.0.0.1 ##
## rpcport=8336 ##
## rpcuser=namecoin ##
## rpcpassword=secret ##
## EOF ##
## ##
## $ namecoin-cli getmininginfo ##
## ##
## Config: /etc/namecoin/namecoin.conf ##
## Blockchain: /var/lib/namecoin ##
## Documentation: /usr/share/doc/namecoin ##
## ##
########################################################################
########################################################################
EOF
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