/*
* Activate a transport handle.
*/
void
xprt_register(SVCXPRT *xprt)
{
/* ignore failure conditions */
(void) __xprt_register(xprt);
}
/*
* Usage:
* xprt = svcudp_create(sock);
*
* If sock<0 then a socket is created, else sock is used.
* If the socket, sock is not bound to a port then svcudp_create
* binds it to an arbitrary port. In any (successful) case,
* xprt->xp_sock is the registered socket number and xprt->xp_port is the
* associated port number.
* Once *xprt is initialized, it is registered as a transporter;
* see (svc.h, xprt_register).
* The routines returns NULL if a problem occurred.
*/
SVCXPRT *
svcudp_bufcreate(int sock, u_int sendsz, u_int recvsz)
{
bool_t madesock = FALSE;
SVCXPRT *xprt;
struct svcudp_data *su;
struct sockaddr_in addr;
socklen_t len = sizeof(struct sockaddr_in);
if (sock == RPC_ANYSOCK) {
if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
return (NULL);
madesock = TRUE;
}
memset(&addr, 0, sizeof (addr));
addr.sin_len = sizeof(struct sockaddr_in);
addr.sin_family = AF_INET;
if (bindresvport(sock, &addr)) {
addr.sin_port = 0;
(void)bind(sock, (struct sockaddr *)&addr, len);
}
if (getsockname(sock, (struct sockaddr *)&addr, &len) != 0) {
if (madesock)
(void)close(sock);
return (NULL);
}
xprt = malloc(sizeof(SVCXPRT));
if (xprt == NULL) {
if (madesock)
(void)close(sock);
return (NULL);
}
su = malloc(sizeof(*su));
if (su == NULL) {
if (madesock)
(void)close(sock);
free(xprt);
return (NULL);
}
su->su_iosz = ((MAX(sendsz, recvsz) + 3) / 4) * 4;
if ((rpc_buffer(xprt) = malloc(su->su_iosz)) == NULL) {
if (madesock)
(void)close(sock);
free(xprt);
free(su);
return (NULL);
}
xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), su->su_iosz,
XDR_DECODE);
su->su_cache = NULL;
xprt->xp_p2 = (caddr_t)su;
xprt->xp_verf.oa_base = su->su_verfbody;
xprt->xp_ops = &svcudp_op;
xprt->xp_port = ntohs(addr.sin_port);
xprt->xp_sock = sock;
if (__xprt_register(xprt) == 0) {
if (madesock)
(void)close(sock);
free(rpc_buffer(xprt));
free(xprt);
free(su);
return (NULL);
}
return (xprt);
}
