ifupdown: add manual method for IPv6. Closes bug 2497.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
ec07420eb9
commit
66cb7bed33
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@ -164,7 +164,7 @@ static char *get_var(const char *id, size_t idlen, struct interface_defn_t *ifd)
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return NULL;
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}
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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static int count_netmask_bits(const char *dotted_quad)
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{
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// int result;
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@ -195,7 +195,7 @@ static int count_netmask_bits(const char *dotted_quad)
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}
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return result;
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}
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#endif
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# endif
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static char *parse(const char *command, struct interface_defn_t *ifd)
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{
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@ -258,17 +258,17 @@ static char *parse(const char *command, struct interface_defn_t *ifd)
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varvalue = get_var(command, nextpercent - command, ifd);
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if (varvalue) {
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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/* "hwaddress <class> <address>":
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* unlike ifconfig, ip doesnt want <class>
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* (usually "ether" keyword). Skip it. */
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if (strncmp(command, "hwaddress", 9) == 0) {
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varvalue = skip_whitespace(skip_non_whitespace(varvalue));
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}
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#endif
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# endif
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addstr(&result, varvalue, strlen(varvalue));
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} else {
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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/* Sigh... Add a special case for 'ip' to convert from
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* dotted quad to bit count style netmasks. */
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if (strncmp(command, "bnmask", 6) == 0) {
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@ -284,7 +284,7 @@ static char *parse(const char *command, struct interface_defn_t *ifd)
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}
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}
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}
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#endif
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# endif
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okay[opt_depth - 1] = 0;
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}
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@ -329,56 +329,64 @@ static int execute(const char *command, struct interface_defn_t *ifd, execfn *ex
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}
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return 1;
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}
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#endif
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#endif /* FEATURE_IFUPDOWN_IPV4 || FEATURE_IFUPDOWN_IPV6 */
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#if ENABLE_FEATURE_IFUPDOWN_IPV6
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static int FAST_FUNC loopback_up6(struct interface_defn_t *ifd, execfn *exec)
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{
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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int result;
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result = execute("ip addr add ::1 dev %iface%", ifd, exec);
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result += execute("ip link set %iface% up", ifd, exec);
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return ((result == 2) ? 2 : 0);
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#else
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# else
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return execute("ifconfig %iface% add ::1", ifd, exec);
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#endif
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# endif
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}
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static int FAST_FUNC loopback_down6(struct interface_defn_t *ifd, execfn *exec)
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{
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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return execute("ip link set %iface% down", ifd, exec);
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#else
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# else
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return execute("ifconfig %iface% del ::1", ifd, exec);
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#endif
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# endif
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}
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static int FAST_FUNC manual_up_down6(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM)
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{
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return 1;
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}
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static int FAST_FUNC static_up6(struct interface_defn_t *ifd, execfn *exec)
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{
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int result;
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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result = execute("ip addr add %address%/%netmask% dev %iface%[[ label %label%]]", ifd, exec);
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result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec);
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/* Was: "[[ ip ....%gateway% ]]". Removed extra spaces w/o checking */
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result += execute("[[ip route add ::/0 via %gateway%]]", ifd, exec);
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#else
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# else
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result = execute("ifconfig %iface%[[ media %media%]][[ hw %hwaddress%]][[ mtu %mtu%]] up", ifd, exec);
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result += execute("ifconfig %iface% add %address%/%netmask%", ifd, exec);
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result += execute("[[route -A inet6 add ::/0 gw %gateway%]]", ifd, exec);
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#endif
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# endif
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return ((result == 3) ? 3 : 0);
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}
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static int FAST_FUNC static_down6(struct interface_defn_t *ifd, execfn *exec)
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{
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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return execute("ip link set %iface% down", ifd, exec);
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#else
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# else
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return execute("ifconfig %iface% down", ifd, exec);
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#endif
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# endif
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}
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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static int FAST_FUNC v4tunnel_up(struct interface_defn_t *ifd, execfn *exec)
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{
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int result;
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@ -394,14 +402,15 @@ static int FAST_FUNC v4tunnel_down(struct interface_defn_t * ifd, execfn * exec)
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{
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return execute("ip tunnel del %iface%", ifd, exec);
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}
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#endif
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# endif
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static const struct method_t methods6[] = {
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#if ENABLE_FEATURE_IFUPDOWN_IP
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{ "v4tunnel", v4tunnel_up, v4tunnel_down, },
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#endif
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{ "static", static_up6, static_down6, },
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{ "loopback", loopback_up6, loopback_down6, },
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# if ENABLE_FEATURE_IFUPDOWN_IP
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{ "v4tunnel" , v4tunnel_up , v4tunnel_down , },
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# endif
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{ "static" , static_up6 , static_down6 , },
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{ "manual" , manual_up_down6 , manual_up_down6 , },
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{ "loopback" , loopback_up6 , loopback_down6 , },
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};
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static const struct address_family_t addr_inet6 = {
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@ -409,43 +418,46 @@ static const struct address_family_t addr_inet6 = {
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ARRAY_SIZE(methods6),
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methods6
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};
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#endif /* FEATURE_IFUPDOWN_IPV6 */
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#if ENABLE_FEATURE_IFUPDOWN_IPV4
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static int FAST_FUNC loopback_up(struct interface_defn_t *ifd, execfn *exec)
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{
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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int result;
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result = execute("ip addr add 127.0.0.1/8 dev %iface%", ifd, exec);
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result += execute("ip link set %iface% up", ifd, exec);
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return ((result == 2) ? 2 : 0);
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#else
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# else
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return execute("ifconfig %iface% 127.0.0.1 up", ifd, exec);
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#endif
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# endif
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}
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static int FAST_FUNC loopback_down(struct interface_defn_t *ifd, execfn *exec)
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{
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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int result;
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result = execute("ip addr flush dev %iface%", ifd, exec);
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result += execute("ip link set %iface% down", ifd, exec);
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return ((result == 2) ? 2 : 0);
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#else
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# else
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return execute("ifconfig %iface% 127.0.0.1 down", ifd, exec);
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#endif
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# endif
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}
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static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec)
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{
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int result;
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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result = execute("ip addr add %address%/%bnmask%[[ broadcast %broadcast%]] "
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"dev %iface%[[ peer %pointopoint%]][[ label %label%]]", ifd, exec);
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result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec);
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result += execute("[[ip route add default via %gateway% dev %iface%]]", ifd, exec);
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return ((result == 3) ? 3 : 0);
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#else
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# else
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/* ifconfig said to set iface up before it processes hw %hwaddress%,
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* which then of course fails. Thus we run two separate ifconfig */
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result = execute("ifconfig %iface%[[ hw %hwaddress%]][[ media %media%]][[ mtu %mtu%]] up",
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@ -455,26 +467,26 @@ static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec)
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ifd, exec);
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result += execute("[[route add default gw %gateway% %iface%]]", ifd, exec);
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return ((result == 3) ? 3 : 0);
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#endif
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# endif
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}
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static int FAST_FUNC static_down(struct interface_defn_t *ifd, execfn *exec)
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{
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int result;
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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result = execute("ip addr flush dev %iface%", ifd, exec);
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result += execute("ip link set %iface% down", ifd, exec);
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#else
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# else
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/* result = execute("[[route del default gw %gateway% %iface%]]", ifd, exec); */
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/* Bringing the interface down deletes the routes in itself.
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Otherwise this fails if we reference 'gateway' when using this from dhcp_down */
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result = 1;
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result += execute("ifconfig %iface% down", ifd, exec);
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#endif
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# endif
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return ((result == 2) ? 2 : 0);
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}
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#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
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# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
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struct dhcp_client_t {
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const char *name;
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const char *startcmd;
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@ -500,21 +512,21 @@ static const struct dhcp_client_t ext_dhcp_clients[] = {
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"kill `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null",
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},
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};
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#endif /* ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCPC */
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# endif /* FEATURE_IFUPDOWN_EXTERNAL_DHCPC */
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#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
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# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
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static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
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{
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unsigned i;
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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/* ip doesn't up iface when it configures it (unlike ifconfig) */
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if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec))
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return 0;
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#else
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# else
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/* needed if we have hwaddress on dhcp iface */
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if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec))
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return 0;
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#endif
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# endif
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for (i = 0; i < ARRAY_SIZE(ext_dhcp_clients); i++) {
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if (exists_execable(ext_dhcp_clients[i].name))
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return execute(ext_dhcp_clients[i].startcmd, ifd, exec);
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@ -522,31 +534,31 @@ static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
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bb_error_msg("no dhcp clients found");
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return 0;
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}
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#elif ENABLE_UDHCPC
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# elif ENABLE_UDHCPC
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static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
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{
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#if ENABLE_FEATURE_IFUPDOWN_IP
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# if ENABLE_FEATURE_IFUPDOWN_IP
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/* ip doesn't up iface when it configures it (unlike ifconfig) */
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if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec))
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return 0;
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#else
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# else
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/* needed if we have hwaddress on dhcp iface */
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if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec))
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return 0;
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#endif
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# endif
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return execute("udhcpc " UDHCPC_CMD_OPTIONS " -p /var/run/udhcpc.%iface%.pid "
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"-i %iface%[[ -H %hostname%]][[ -c %client%]][[ -s %script%]][[ %udhcpc_opts%]]",
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ifd, exec);
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}
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#else
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# else
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static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd UNUSED_PARAM,
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execfn *exec UNUSED_PARAM)
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{
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return 0; /* no dhcp support */
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}
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#endif
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# endif
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#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
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# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
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static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
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{
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int result = 0;
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@ -569,7 +581,7 @@ static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
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result += static_down(ifd, exec);
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return ((result == 3) ? 3 : 0);
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}
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#elif ENABLE_UDHCPC
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# elif ENABLE_UDHCPC
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static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
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{
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int result;
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@ -586,13 +598,13 @@ static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
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result += static_down(ifd, exec);
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return ((result == 3) ? 3 : 0);
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}
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#else
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# else
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static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd UNUSED_PARAM,
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execfn *exec UNUSED_PARAM)
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{
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return 0; /* no dhcp support */
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}
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#endif
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# endif
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static int FAST_FUNC manual_up_down(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM)
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{
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@ -644,7 +656,8 @@ static const struct address_family_t addr_inet = {
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methods
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};
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#endif /* if ENABLE_FEATURE_IFUPDOWN_IPV4 */
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#endif /* FEATURE_IFUPDOWN_IPV4 */
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/* Returns pointer to the next word, or NULL.
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* In 1st case, advances *buf to the word after this one.
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