2 * Licensed under the Apache License, Version 2.0 (the "License");
3 * you may not use this file except in compliance with the License.
4 * You may obtain a copy of the License at
6 * http://www.apache.org/licenses/LICENSE-2.0
8 * Unless required by applicable law or agreed to in writing, software
9 * distributed under the License is distributed on an "AS IS" BASIS,
10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 * See the License for the specific language governing permissions and
12 * limitations under the License.
14 * Copyright (C) 2008 John Crispin <blogic@openwrt.org>
15 * Copyright (C) 2008 Steven Barth <steven@midlink.org>
20 #include <linux/sockios.h>
22 #include <sys/types.h>
24 #include <sys/ioctl.h>
33 static int sock_bridge = 0;
37 sock_bridge = socket(AF_LOCAL, SOCK_STREAM, 0);
41 void bridge_shutdown(void)
49 static inline int _bridge_new(lua_State *L, int i)
52 if(lua_gettop(L) != 1)
54 lua_pushstring(L, "invalid arg list");
59 ifname = (char *)lua_tostring (L, 1);
60 if(!ioctl(sock_bridge, i, ifname))
61 lua_pushboolean(L, 1);
63 lua_pushboolean(L, 0);
67 int bridge_new(lua_State *L)
69 return _bridge_new(L, SIOCBRADDBR);
72 int bridge_del(lua_State *L)
74 return _bridge_new(L, SIOCBRDELBR);
77 static inline int _bridge_addif(lua_State *L, int i)
81 if(lua_gettop(L) != 2)
83 lua_pushstring(L, "invalid arg list");
87 br = (char *)lua_tostring (L, 1);
88 ifname = (char *)lua_tostring (L, 2);
89 strncpy(ifr.ifr_name, br, IFNAMSIZ);
90 ifr.ifr_ifindex = if_nametoindex(ifname);
91 if(ifr.ifr_ifindex == 0)
93 lua_pushboolean(L, 0);
96 if(!ioctl(sock_bridge, i, &ifr))
97 lua_pushboolean(L, 1);
99 lua_pushboolean(L, 0);
103 int bridge_addif(lua_State *L)
105 return _bridge_addif(L, SIOCBRADDIF);
108 int bridge_delif(lua_State *L)
110 return _bridge_addif(L, SIOCBRDELIF);
113 #define SYSFS_PATH_MAX 512
114 #define SYSFS_CLASS_NET "/sys/class/net/"
115 static int isbridge(const struct dirent *entry)
117 char path[SYSFS_PATH_MAX];
120 snprintf(path, SYSFS_PATH_MAX, SYSFS_CLASS_NET "%s/bridge", entry->d_name);
121 return stat(path, &st) == 0 && S_ISDIR(st.st_mode);
124 static int isdev(const struct dirent *entry)
126 if(*entry->d_name == '.')
131 static inline void bridge_getifs(lua_State *L, const char *ifname)
133 struct dirent **namelist;
135 char path[SYSFS_PATH_MAX];
136 snprintf(path, SYSFS_PATH_MAX, SYSFS_CLASS_NET "%s/brif", ifname);
137 count = scandir(path, &namelist, isdev, alphasort);
141 for(i = 0; i < count; i++)
143 lua_pushinteger(L, i + 1);
144 lua_pushstring(L, namelist[i]->d_name);
152 int bridge_getall(lua_State *L)
154 struct dirent **namelist;
156 count = scandir(SYSFS_CLASS_NET, &namelist, isbridge, alphasort);
161 for (i = 0; i < count; i++)
163 lua_pushstring(L, namelist[i]->d_name);
165 bridge_getifs(L, namelist[i]->d_name);