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khan: listening on socket

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This commit is contained in:
Jōshin 2021-04-01 02:46:18 +00:00
parent f2df8b83d5
commit fc95d7ded7
1 changed files with 40 additions and 1 deletions
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41
pkg/urbit/vere/io/khan.c
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@ -15,9 +15,13 @@
*/
typedef struct _u3_khan {
u3_auto car_u; // driver
uv_pipe_t pyp_u; // socket pipe
uv_connect_t con_u; // connection state
c3_l sev_l; // instance number
} u3_khan;
static const c3_c* const URB_SOCK_PATH = ".urb/khan.sock";
/* _khan_io_talk(): notify %khan that we're live
*/
static void
@ -64,9 +68,18 @@ static void
_khan_io_exit(u3_auto* car_u)
{
u3_khan* cop_u = (u3_khan*)car_u;
// TODO close socket
}
/* _khan_conn_cb(): socket connection callback.
*/
static void
_khan_conn_cb(uv_stream_t* sem_u, c3_i tas_i)
{
// TODO interact
}
/* u3_khan(): initialize control plane socket.
*/
u3_auto*
@ -80,7 +93,33 @@ u3_khan_io_init(u3_pier* pir_u)
car_u->io.kick_f = _khan_io_kick;
car_u->io.exit_f = _khan_io_exit;
// TODO open socket
// Open socket. The full socket path is limited to about 108 characters, and
// we want it to be relative to the pier. So we save our current path, chdir
// to the pier, open the socket at the desired path, then chdir back.
// Hopefully there aren't any threads.
{
c3_c pax_c[2048];
// XX better error handling
if ( NULL == getcwd(pax_c, sizeof(pax_c)) ) {
c3_assert(!"khan-getcwd");
}
else {
if ( 0 != chdir(u3_Local) ) {
c3_assert(!"khan-chdir");
}
else {
uv_pipe_init(u3L, &cop_u->pyp_u, 0);
unlink(URB_SOCK_PATH);
uv_pipe_bind(&cop_u->pyp_u, URB_SOCK_PATH);
uv_listen((uv_stream_t*)&cop_u->pyp_u, 0, _khan_conn_cb);
if ( 0 != chdir(pax_c) ) {
c3_assert(!"khan-chdir2");
}
}
}
}
{
u3_noun now;