Add function for host interfaces

Moved from alterator-net-bond.

alterator-net-functions/alterator-net-functions

@@ -807,6 +807,73 @@ init_slave_eth_iface_cache()
 	write_iface_option "$cachedir/$name" CONFIG_IPV6 no
 }
 
+# slaves list must be separated with ';', spaces or new lines
+host_add_slaves_with_cache()
+{
+	local cachedir="$1"; shift
+	local host_iface="$1"; shift
+	local slaves="$1"; shift
+	local ifacedir="$cachedir/$host_iface"
+	local h= i= new_slaves=
+
+	[ -n "$cachedir" -a -n "$host_iface" -a "$slaves" -a -d "$ifacedir" ] || return 1
+
+	h="$(read_iface_host_var "$ifacedir")"
+
+	local IFS=' ;
+'
+	for i in $slaves; do
+		new_slaves="$new_slaves${new_slaves:+ }$i"
+		init_slave_eth_iface_cache "$cachedir" "$i"
+	done
+
+	if [ -n "$h" ]; then
+		h="$h $new_slaves"
+	else
+		h="$new_slaves"
+	fi
+
+	write_iface_option "$ifacedir" HOST "\"$h\""
+}
+
+# slaves list must be separated with ';', spaces or new lines
+host_del_slaves_with_cache()
+{
+	local cachedir="$1"; shift
+	local host_iface="$1"; shift
+	local slaves="$1"; shift
+	local ifacedir="$cachedir/$host_iface"
+	local i=
+
+	[  -n "$cachedir" -a -n "$host_iface" -a "$slaves" -a -f "$ifacedir/options" ] || return 1
+
+	local IFS=' ;
+'
+	for i in $slaves; do
+		sed -i -r "/^HOST=/{s/$i//; s/ +/ /; s/=([\"'])? /=\1/; s/ ([\"'])?$/\1/}" "$ifacedir/options"
+		if [ ! -d "$cachedir/$i" ]; then
+			cp -a "$etcnet_iface_dir/$i" "$cachedir/"
+		fi
+		write_iface_option "$cachedir/$i" CONFIG_IPV4 yes
+	done
+}
+
+remove_host_iface_with_cache()
+{
+	local cachedir="$1"; shift
+	local host_iface="$1"; shift
+	local ifacedir="$cachedir/$host_iface"
+	local h=
+
+	[  -n "$cachedir" -a -n "$host_iface" ] || return 1
+	[ -d "$ifacedir" ] && ! iface_will_removed "$cachedir" "$host_iface" || return 0
+
+	h="$(read_iface_host_var "$ifacedir")"
+	host_del_slaves_with_cache "$cachedir" "$host_iface" "$h"
+
+	remove_iface_with_cache "$cachedir" "$host_iface"
+}
+
 next_iface_with_cache()
 {
 	local cachedir="$1"; shift