diff options
| -rw-r--r-- | networking/ifupdown.c | 123 |
1 files changed, 68 insertions, 55 deletions
diff --git a/networking/ifupdown.c b/networking/ifupdown.c index 3cb1ec8..59df4e8 100644 --- a/networking/ifupdown.c +++ b/networking/ifupdown.c @@ -164,7 +164,7 @@ static char *get_var(const char *id, size_t idlen, struct interface_defn_t *ifd) return NULL; } -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP static int count_netmask_bits(const char *dotted_quad) { // int result; @@ -195,7 +195,7 @@ static int count_netmask_bits(const char *dotted_quad) } return result; } -#endif +# endif static char *parse(const char *command, struct interface_defn_t *ifd) { @@ -258,17 +258,17 @@ static char *parse(const char *command, struct interface_defn_t *ifd) varvalue = get_var(command, nextpercent - command, ifd); if (varvalue) { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP /* "hwaddress <class> <address>": * unlike ifconfig, ip doesnt want <class> * (usually "ether" keyword). Skip it. */ if (strncmp(command, "hwaddress", 9) == 0) { varvalue = skip_whitespace(skip_non_whitespace(varvalue)); } -#endif +# endif addstr(&result, varvalue, strlen(varvalue)); } else { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP /* Sigh... Add a special case for 'ip' to convert from * dotted quad to bit count style netmasks. */ if (strncmp(command, "bnmask", 6) == 0) { @@ -284,7 +284,7 @@ static char *parse(const char *command, struct interface_defn_t *ifd) } } } -#endif +# endif okay[opt_depth - 1] = 0; } @@ -329,56 +329,64 @@ static int execute(const char *command, struct interface_defn_t *ifd, execfn *ex } return 1; } -#endif + +#endif /* FEATURE_IFUPDOWN_IPV4 || FEATURE_IFUPDOWN_IPV6 */ + #if ENABLE_FEATURE_IFUPDOWN_IPV6 + static int FAST_FUNC loopback_up6(struct interface_defn_t *ifd, execfn *exec) { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP int result; result = execute("ip addr add ::1 dev %iface%", ifd, exec); result += execute("ip link set %iface% up", ifd, exec); return ((result == 2) ? 2 : 0); -#else +# else return execute("ifconfig %iface% add ::1", ifd, exec); -#endif +# endif } static int FAST_FUNC loopback_down6(struct interface_defn_t *ifd, execfn *exec) { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP return execute("ip link set %iface% down", ifd, exec); -#else +# else return execute("ifconfig %iface% del ::1", ifd, exec); -#endif +# endif +} + +static int FAST_FUNC manual_up_down6(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM) +{ + return 1; } static int FAST_FUNC static_up6(struct interface_defn_t *ifd, execfn *exec) { int result; -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP result = execute("ip addr add %address%/%netmask% dev %iface%[[ label %label%]]", ifd, exec); result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec); /* Was: "[[ ip ....%gateway% ]]". Removed extra spaces w/o checking */ result += execute("[[ip route add ::/0 via %gateway%]]", ifd, exec); -#else +# else result = execute("ifconfig %iface%[[ media %media%]][[ hw %hwaddress%]][[ mtu %mtu%]] up", ifd, exec); result += execute("ifconfig %iface% add %address%/%netmask%", ifd, exec); result += execute("[[route -A inet6 add ::/0 gw %gateway%]]", ifd, exec); -#endif +# endif return ((result == 3) ? 3 : 0); } static int FAST_FUNC static_down6(struct interface_defn_t *ifd, execfn *exec) { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP return execute("ip link set %iface% down", ifd, exec); -#else +# else return execute("ifconfig %iface% down", ifd, exec); -#endif +# endif } -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP static int FAST_FUNC v4tunnel_up(struct interface_defn_t *ifd, execfn *exec) { int result; @@ -394,14 +402,15 @@ static int FAST_FUNC v4tunnel_down(struct interface_defn_t * ifd, execfn * exec) { return execute("ip tunnel del %iface%", ifd, exec); } -#endif +# endif static const struct method_t methods6[] = { -#if ENABLE_FEATURE_IFUPDOWN_IP - { "v4tunnel", v4tunnel_up, v4tunnel_down, }, -#endif - { "static", static_up6, static_down6, }, - { "loopback", loopback_up6, loopback_down6, }, +# if ENABLE_FEATURE_IFUPDOWN_IP + { "v4tunnel" , v4tunnel_up , v4tunnel_down , }, +# endif + { "static" , static_up6 , static_down6 , }, + { "manual" , manual_up_down6 , manual_up_down6 , }, + { "loopback" , loopback_up6 , loopback_down6 , }, }; static const struct address_family_t addr_inet6 = { @@ -409,43 +418,46 @@ static const struct address_family_t addr_inet6 = { ARRAY_SIZE(methods6), methods6 }; + #endif /* FEATURE_IFUPDOWN_IPV6 */ + #if ENABLE_FEATURE_IFUPDOWN_IPV4 + static int FAST_FUNC loopback_up(struct interface_defn_t *ifd, execfn *exec) { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP int result; result = execute("ip addr add 127.0.0.1/8 dev %iface%", ifd, exec); result += execute("ip link set %iface% up", ifd, exec); return ((result == 2) ? 2 : 0); -#else +# else return execute("ifconfig %iface% 127.0.0.1 up", ifd, exec); -#endif +# endif } static int FAST_FUNC loopback_down(struct interface_defn_t *ifd, execfn *exec) { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP int result; result = execute("ip addr flush dev %iface%", ifd, exec); result += execute("ip link set %iface% down", ifd, exec); return ((result == 2) ? 2 : 0); -#else +# else return execute("ifconfig %iface% 127.0.0.1 down", ifd, exec); -#endif +# endif } static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec) { int result; -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP result = execute("ip addr add %address%/%bnmask%[[ broadcast %broadcast%]] " "dev %iface%[[ peer %pointopoint%]][[ label %label%]]", ifd, exec); result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec); result += execute("[[ip route add default via %gateway% dev %iface%]]", ifd, exec); return ((result == 3) ? 3 : 0); -#else +# else /* ifconfig said to set iface up before it processes hw %hwaddress%, * which then of course fails. Thus we run two separate ifconfig */ result = execute("ifconfig %iface%[[ hw %hwaddress%]][[ media %media%]][[ mtu %mtu%]] up", @@ -455,26 +467,26 @@ static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec) ifd, exec); result += execute("[[route add default gw %gateway% %iface%]]", ifd, exec); return ((result == 3) ? 3 : 0); -#endif +# endif } static int FAST_FUNC static_down(struct interface_defn_t *ifd, execfn *exec) { int result; -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP result = execute("ip addr flush dev %iface%", ifd, exec); result += execute("ip link set %iface% down", ifd, exec); -#else +# else /* result = execute("[[route del default gw %gateway% %iface%]]", ifd, exec); */ /* Bringing the interface down deletes the routes in itself. Otherwise this fails if we reference 'gateway' when using this from dhcp_down */ result = 1; result += execute("ifconfig %iface% down", ifd, exec); -#endif +# endif return ((result == 2) ? 2 : 0); } -#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP +# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP struct dhcp_client_t { const char *name; const char *startcmd; @@ -500,21 +512,21 @@ static const struct dhcp_client_t ext_dhcp_clients[] = { "kill `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null", }, }; -#endif /* ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCPC */ +# endif /* FEATURE_IFUPDOWN_EXTERNAL_DHCPC */ -#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP +# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec) { unsigned i; -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP /* ip doesn't up iface when it configures it (unlike ifconfig) */ if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec)) return 0; -#else +# else /* needed if we have hwaddress on dhcp iface */ if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec)) return 0; -#endif +# endif for (i = 0; i < ARRAY_SIZE(ext_dhcp_clients); i++) { if (exists_execable(ext_dhcp_clients[i].name)) return execute(ext_dhcp_clients[i].startcmd, ifd, exec); @@ -522,31 +534,31 @@ static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec) bb_error_msg("no dhcp clients found"); return 0; } -#elif ENABLE_UDHCPC +# elif ENABLE_UDHCPC static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec) { -#if ENABLE_FEATURE_IFUPDOWN_IP +# if ENABLE_FEATURE_IFUPDOWN_IP /* ip doesn't up iface when it configures it (unlike ifconfig) */ if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec)) return 0; -#else +# else /* needed if we have hwaddress on dhcp iface */ if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec)) return 0; -#endif +# endif return execute("udhcpc " UDHCPC_CMD_OPTIONS " -p /var/run/udhcpc.%iface%.pid " "-i %iface%[[ -H %hostname%]][[ -c %client%]][[ -s %script%]][[ %udhcpc_opts%]]", ifd, exec); } -#else +# else static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM) { return 0; /* no dhcp support */ } -#endif +# endif -#if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP +# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec) { int result = 0; @@ -569,7 +581,7 @@ static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec) result += static_down(ifd, exec); return ((result == 3) ? 3 : 0); } -#elif ENABLE_UDHCPC +# elif ENABLE_UDHCPC static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec) { int result; @@ -586,13 +598,13 @@ static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec) result += static_down(ifd, exec); return ((result == 3) ? 3 : 0); } -#else +# else static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM) { return 0; /* no dhcp support */ } -#endif +# endif static int FAST_FUNC manual_up_down(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM) { @@ -644,7 +656,8 @@ static const struct address_family_t addr_inet = { methods }; -#endif /* if ENABLE_FEATURE_IFUPDOWN_IPV4 */ +#endif /* FEATURE_IFUPDOWN_IPV4 */ + /* Returns pointer to the next word, or NULL. * In 1st case, advances *buf to the word after this one. |