stop_interface_ppp() { local cfg="$1" local proto config_get proto "$cfg" proto local ifname config_get ifname "$cfg" ifname local link="${proto:-ppp}-$ifname" [ -f "/var/run/ppp-${link}.pid" ] && { local pid="$(head -n1 /var/run/ppp-${link}.pid 2>/dev/null)" grep -qs pppd "/proc/$pid/cmdline" && kill -TERM $pid } } start_pppd() { local cfg="$1"; shift local proto config_get proto "$cfg" proto # unique link identifier local link="${proto:-ppp}-$cfg" # make sure only one pppd process is started lock "/var/lock/ppp-${link}" local pid="$(head -n1 /var/run/ppp-${link}.pid 2>/dev/null)" [ -d "/proc/$pid" ] && grep pppd "/proc/$pid/cmdline" 2>/dev/null >/dev/null && { lock -u "/var/lock/ppp-${link}" return 0 } # Workaround: sometimes hotplug2 doesn't deliver the hotplug event for creating # /dev/ppp fast enough to be used here [ -e /dev/ppp ] || mknod /dev/ppp c 108 0 local device config_get device "$cfg" device local username config_get username "$cfg" username local password config_get password "$cfg" password local keepalive config_get keepalive "$cfg" keepalive local connect config_get connect "$cfg" connect local disconnect config_get disconnect "$cfg" disconnect local pppd_options config_get pppd_options "$cfg" pppd_options local defaultroute config_get_bool defaultroute "$cfg" defaultroute 1 [ "$defaultroute" -eq 1 ] && \ defaultroute="defaultroute replacedefaultroute" || defaultroute="nodefaultroute" local interval="${keepalive##*[, ]}" [ "$interval" != "$keepalive" ] || interval=5 local dns config_get dns "$config" dns local has_dns=0 local peer_default=1 [ -n "$dns" ] && { has_dns=1 peer_default=0 } local peerdns config_get_bool peerdns "$cfg" peerdns $peer_default if [ "$peerdns" -eq 1 ] || [ ! -e /tmp/resolv.conf.auto ]; then echo -n "" > /tmp/resolv.conf.auto fi [ "$peerdns" -eq 1 ] && { peerdns="usepeerdns" } || { peerdns="" for dns in $dns; do echo "nameserver $dns" >> /tmp/resolv.conf.auto done } local demand config_get_bool demand "$cfg" demand 0 local demandargs [ "$demand" -eq 1 ] && { demandargs="precompiled-active-filter /etc/ppp/filter demand idle" [ "$has_dns" -eq 0 ] && \ echo "nameserver 1.1.1.1" > /tmp/resolv.conf.auto } || { demandargs="persist" } local ipv6 config_get_bool ipv6 "$cfg" ipv6 0 [ "$ipv6" -eq 1 ] && ipv6="+ipv6" || ipv6="" /usr/sbin/pppd "$@" \ ${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}} \ $demandargs \ $peerdns \ $defaultroute \ ${username:+user "$username" password "$password"} \ linkname "$link" \ ipparam "$cfg" \ ifname "$link" \ ${connect:+connect "$connect"} \ ${disconnect:+disconnect "$disconnect"} \ ${ipv6} \ ${pppd_options} lock -u "/var/lock/ppp-${link}" } setup_interface_ppp() { local iface="$1" local config="$2" local device config_get device "$config" device local mtu config_get mtu "$config" mtu mtu=${mtu:-1492} start_pppd "$config" \ mtu $mtu mru $mtu \ "$device" }