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add function to set the target for UDP rpc calls. 

including doing broadcast calls
libnfs-4.0.0-vitalif
Ronnie Sahlberg 2011-06-26 18:42:53 +10:00
parent 485bc9b9a7
commit 5bf60dc601
2 changed files with 35 additions and 0 deletions
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1
include/libnfs-private.h
View File

@ -78,4 +78,5 @@ struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs);
/* we dont want to expose UDP to normal applications/users this is private to libnfs to use exclusively for broadcast RPC */
int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port);
int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast);
struct rpc_context *rpc_init_udp_context(void);

34
lib/socket.c
View File

@ -388,3 +388,37 @@ int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port)
return 0;
}
int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast)
{
struct addrinfo *ai = NULL;
char service[6];
if (rpc->is_udp == 0) {
rpc_set_error(rpc, "Can not set destination sockaddr. Not UDP context");
return -1;
}
snprintf(service, 6, "%d", port);
if (getaddrinfo(addr, service, NULL, &ai) != 0) {
rpc_set_error(rpc, "Invalid address:%s. "
"Can not resolv into IPv4/v6 structure.");
return -1;
}
if (rpc->udp_dest) {
free(rpc->udp_dest);
rpc->udp_dest = NULL;
}
rpc->udp_dest = malloc(ai->ai_addrlen);
if (rpc->udp_dest == NULL) {
rpc_set_error(rpc, "Out of memory. Failed to allocate sockaddr structure");
return -1;
}
memcpy(rpc->udp_dest, ai->ai_addr, ai->ai_addrlen);
freeaddrinfo(ai);
rpc->is_broadcast = is_broadcast;
setsockopt(rpc->fd, SOL_SOCKET, SO_BROADCAST, &is_broadcast, sizeof(is_broadcast));
return 0;
}