2 Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
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.
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.
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/>.
18 #ifndef _LIBNFS_PRIVATE_H_
19 #define _LIBNFS_PRIVATE_H_
22 #include "config.h" /* HAVE_SOCKADDR_STORAGE ? */
26 #include <sys/socket.h> /* struct sockaddr_storage */
29 #include "libnfs-zdr.h"
35 #if !defined(HAVE_SOCKADDR_STORAGE) && !defined(WIN32)
37 * RFC 2553: protocol-independent placeholder for socket addresses
39 #define _SS_MAXSIZE 128
40 #define _SS_ALIGNSIZE (sizeof(double))
41 #define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) * 2)
42 #define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) * 2 - \
43 _SS_PAD1SIZE - _SS_ALIGNSIZE)
45 struct sockaddr_storage
{
46 #ifdef HAVE_SOCKADDR_LEN
47 unsigned char ss_len
; /* address length */
48 unsigned char ss_family
; /* address family */
50 unsigned short ss_family
;
52 char __ss_pad1
[_SS_PAD1SIZE
];
53 double __ss_align
; /* force desired structure storage alignment */
54 char __ss_pad2
[_SS_PAD2SIZE
];
60 struct rpc_fragment
*next
;
65 #define RPC_CONTEXT_MAGIC 0xc6e46435
66 #define RPC_PARAM_UNDEFINED -1
69 * Queue is singly-linked but we hold on to the tail
72 struct rpc_pdu
*head
, *tail
;
90 /* buffer used for encoding RPC PDU */
94 struct rpc_queue outqueue
;
95 struct sockaddr_storage udp_src
;
96 struct rpc_queue waitpdu
[HASHES
];
102 /* special fields for UDP, which can sometimes be BROADCASTed */
104 struct sockaddr
*udp_dest
;
107 /* track the address we connect to so we can auto-reconnect on session failure */
108 struct sockaddr_storage s
;
111 /* fragment reassembly */
112 struct rpc_fragment
*fragments
;
114 /* parameters passable via URL */
121 struct rpc_pdu
*next
;
127 struct rpc_data outdata
;
132 /* function to decode the zdr reply data and buffer to decode into */
133 zdrproc_t zdr_decode_fn
;
134 caddr_t zdr_decode_buf
;
135 uint32_t zdr_decode_bufsize
;
138 void rpc_reset_queue(struct rpc_queue
*q
);
139 void rpc_enqueue(struct rpc_queue
*q
, struct rpc_pdu
*pdu
);
140 void rpc_return_to_queue(struct rpc_queue
*q
, struct rpc_pdu
*pdu
);
141 unsigned int rpc_hash_xid(uint32_t xid
);
143 struct rpc_pdu
*rpc_allocate_pdu(struct rpc_context
*rpc
, int program
, int version
, int procedure
, rpc_cb cb
, void *private_data
, zdrproc_t zdr_decode_fn
, int zdr_bufsize
);
144 void rpc_free_pdu(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
);
145 int rpc_queue_pdu(struct rpc_context
*rpc
, struct rpc_pdu
*pdu
);
146 int rpc_get_pdu_size(char *buf
);
147 int rpc_process_pdu(struct rpc_context
*rpc
, char *buf
, int size
);
148 void rpc_error_all_pdus(struct rpc_context
*rpc
, char *error
);
150 void rpc_set_error(struct rpc_context
*rpc
, char *error_string
, ...)
152 __attribute__((format(printf
, 2, 3)))
156 void nfs_set_error(struct nfs_context
*nfs
, char *error_string
, ...)
158 __attribute__((format(printf
, 2, 3)))
162 const char *nfs_get_server(struct nfs_context
*nfs
);
163 const char *nfs_get_export(struct nfs_context
*nfs
);
165 /* we dont want to expose UDP to normal applications/users this is private to libnfs to use exclusively for broadcast RPC */
166 int rpc_bind_udp(struct rpc_context
*rpc
, char *addr
, int port
);
167 int rpc_set_udp_destination(struct rpc_context
*rpc
, char *addr
, int port
, int is_broadcast
);
168 struct rpc_context
*rpc_init_udp_context(void);
169 struct sockaddr
*rpc_get_recv_sockaddr(struct rpc_context
*rpc
);
171 void rpc_set_autoreconnect(struct rpc_context
*rpc
);
172 void rpc_unset_autoreconnect(struct rpc_context
*rpc
);
174 void rpc_set_tcp_syncnt(struct rpc_context
*rpc
, int v
);
175 void rpc_set_uid(struct rpc_context
*rpc
, int uid
);
176 void rpc_set_gid(struct rpc_context
*rpc
, int gid
);
178 int rpc_add_fragment(struct rpc_context
*rpc
, char *data
, uint64_t size
);
179 void rpc_free_all_fragments(struct rpc_context
*rpc
);
181 const struct nfs_fh3
*nfs_get_rootfh(struct nfs_context
*nfs
);
187 #endif /* !_LIBNFS_PRIVATE_H_ */