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[
{
"match": [
/* Is somebody trying to create a route? Hang on... */
{ "sendmsg": { "fd": { "set": "fd" },
"msg": { "iov": { "set": "buf", "value": { "netlink": { "type": "newroute", "flags": { "all": [ "create", "request" ] } } } } } }
}
],
"call": [
/* Create a new socket, owned by us */
{ "socket": { "family": "netlink", "type": "raw", "flags": "nonblock", "protocol": "nl_route" }, "ret": "new_fd" },
/* Bind it for netlink usage */
{ "bind": { "fd": { "get": "new_fd" }, "addr": { "family": "netlink", "pid": 0, "groups": 0 } }, "ret": "y" },
/* And re-send the original message */
{ "sendmsg": { "fd": { "get": "new_fd" }, "msg": { "name": { "family": "netlink", "pid": 0, "groups": 0 }, "iovlen": 1, "iov": { "get": "buf" } }, "flags": 0 }, "ret": "n" }
],
/* Then, sneak our socket back into the calling process */
"fd": { "src": { "get": "fd" }, "new": { "set": "new_fd" }, "close_on_exec": false },
/* And report success, or failure */
"return": { "value": "n", "error": "n" }
},
{
/* FIXME: Unblock subsequent recvmsg(). To keep this clean, we should proxy
* it ourselves.
*/
"match": [
{ "recvmsg": { "fd": 4 /* TODO: get *our* new number */ } }
],
"return": { "value": 0, "error": 0 }
}
]
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