add function to bind a udp rpc context to a local port/address
[deb_libnfs.git] / include / libnfs-private.h
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1/*
2 Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation; either version 2.1 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, see <http://www.gnu.org/licenses/>.
16*/
17#include <rpc/auth.h>
18
19struct rpc_context {
20 int fd;
21 int is_connected;
22
23 char *error_string;
24
25 rpc_cb connect_cb;
26 void *connect_data;
27
28 AUTH *auth;
29 unsigned long xid;
30
31 /* buffer used for encoding RPC PDU */
32 char *encodebuf;
33 int encodebuflen;
34
35 struct rpc_pdu *outqueue;
2d0c44ce 36 struct sockaddr_storage udp_src;
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37 struct rpc_pdu *waitpdu;
38
84004dbf 39 int inpos;
cdb19ec1 40 int insize;
84004dbf 41 char *inbuf;
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42
43 /* special fields for UDP, which can sometimes be BROADCASTed */
44 int is_udp;
a9b24162 45 struct sockaddr *udp_dest;
2ae46066 46 int is_broadcast;
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47};
48
49struct rpc_pdu {
50 struct rpc_pdu *next;
51
52 unsigned long xid;
53 XDR xdr;
54
55 int written;
56 struct rpc_data outdata;
57
58 rpc_cb cb;
59 void *private_data;
60
61 /* function to decode the xdr reply data and buffer to decode into */
62 xdrproc_t xdr_decode_fn;
63 caddr_t xdr_decode_buf;
64 int xdr_decode_bufsize;
65};
66
67struct rpc_pdu *rpc_allocate_pdu(struct rpc_context *rpc, int program, int version, int procedure, rpc_cb cb, void *private_data, xdrproc_t xdr_decode_fn, int xdr_bufsize);
68void rpc_free_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu);
69int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu);
70int rpc_get_pdu_size(char *buf);
71int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size);
72void rpc_error_all_pdus(struct rpc_context *rpc, char *error);
73
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74void rpc_set_error(struct rpc_context *rpc, char *error_string, ...);
75void nfs_set_error(struct nfs_context *nfs, char *error_string, ...);
76
df5af25f 77struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs);
1896d37b 78
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79/* we dont want to expose UDP to normal applications/users this is private to libnfs to use exclusively for broadcast RPC */
80int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port);
9e00b8c6 81struct rpc_context *rpc_init_udp_context(void);