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84004dbf RS |
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 | */ | |
83a446dd AR |
17 | |
18 | #ifndef _LIBNFS_PRIVATE_H_ | |
19 | #define _LIBNFS_PRIVATE_H_ | |
20 | ||
d7c6e9aa RS |
21 | #ifdef HAVE_CONFIG_H |
22 | #include "config.h" /* HAVE_SOCKADDR_STORAGE ? */ | |
23 | #endif | |
24 | ||
67a9f57e | 25 | #ifndef WIN32 |
763cd6e3 | 26 | #include <sys/socket.h> /* struct sockaddr_storage */ |
67a9f57e | 27 | #endif |
763cd6e3 RS |
28 | |
29 | #include "libnfs-zdr.h" | |
84004dbf | 30 | |
324234ee AR |
31 | #ifdef __cplusplus |
32 | extern "C" { | |
33 | #endif | |
67a9f57e RS |
34 | |
35 | #if !defined(HAVE_SOCKADDR_STORAGE) && !defined(WIN32) | |
d7c6e9aa RS |
36 | /* |
37 | * RFC 2553: protocol-independent placeholder for socket addresses | |
38 | */ | |
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) | |
44 | ||
45 | struct sockaddr_storage { | |
0f9fe7c6 | 46 | #ifdef HAVE_SOCKADDR_LEN |
d7c6e9aa RS |
47 | unsigned char ss_len; /* address length */ |
48 | unsigned char ss_family; /* address family */ | |
49 | #else | |
50 | unsigned short ss_family; | |
51 | #endif | |
52 | char __ss_pad1[_SS_PAD1SIZE]; | |
53 | double __ss_align; /* force desired structure storage alignment */ | |
54 | char __ss_pad2[_SS_PAD2SIZE]; | |
55 | }; | |
56 | #endif | |
57 | ||
58 | ||
d678b73e RS |
59 | struct rpc_fragment { |
60 | struct rpc_fragment *next; | |
183451cf | 61 | uint64_t size; |
d678b73e RS |
62 | char *data; |
63 | }; | |
64 | ||
f3a75078 | 65 | #define RPC_CONTEXT_MAGIC 0xc6e46435 |
1c8b4547 | 66 | #define RPC_PARAM_UNDEFINED -1 |
f3a75078 | 67 | |
aec45c62 MH |
68 | /* |
69 | * Queue is singly-linked but we hold on to the tail | |
70 | */ | |
71 | struct rpc_queue { | |
72 | struct rpc_pdu *head, *tail; | |
73 | }; | |
74 | ||
63f36a09 | 75 | #define HASHES 1024 |
3ca2aac9 | 76 | #define NFS_RA_TIMEOUT 5 |
63f36a09 | 77 | |
84004dbf | 78 | struct rpc_context { |
1c8b4547 | 79 | uint32_t magic; |
84004dbf RS |
80 | int fd; |
81 | int is_connected; | |
82 | ||
83 | char *error_string; | |
84 | ||
85 | rpc_cb connect_cb; | |
86 | void *connect_data; | |
87 | ||
67ba2239 | 88 | struct AUTH *auth; |
b93082da | 89 | uint32_t xid; |
84004dbf | 90 | |
1c8b4547 PL |
91 | /* buffer used for encoding RPC PDU */ |
92 | char *encodebuf; | |
93 | int encodebuflen; | |
84004dbf | 94 | |
aec45c62 | 95 | struct rpc_queue outqueue; |
1c8b4547 | 96 | struct sockaddr_storage udp_src; |
63f36a09 | 97 | struct rpc_queue waitpdu[HASHES]; |
84004dbf | 98 | |
1c8b4547 PL |
99 | uint32_t inpos; |
100 | uint32_t insize; | |
101 | char *inbuf; | |
d16a3ca4 | 102 | |
1c8b4547 PL |
103 | /* special fields for UDP, which can sometimes be BROADCASTed */ |
104 | int is_udp; | |
105 | struct sockaddr *udp_dest; | |
106 | int is_broadcast; | |
1744ef90 | 107 | |
1c8b4547 PL |
108 | /* track the address we connect to so we can auto-reconnect on session failure */ |
109 | struct sockaddr_storage s; | |
110 | int auto_reconnect; | |
d678b73e RS |
111 | |
112 | /* fragment reassembly */ | |
113 | struct rpc_fragment *fragments; | |
83a446dd | 114 | |
1c8b4547 PL |
115 | /* parameters passable via URL */ |
116 | int tcp_syncnt; | |
9126c9c0 PL |
117 | int uid; |
118 | int gid; | |
3ca2aac9 | 119 | uint32_t readahead; |
84004dbf RS |
120 | }; |
121 | ||
122 | struct rpc_pdu { | |
123 | struct rpc_pdu *next; | |
124 | ||
b93082da | 125 | uint32_t xid; |
763cd6e3 | 126 | ZDR zdr; |
84004dbf | 127 | |
d14e2838 | 128 | uint32_t written; |
84004dbf RS |
129 | struct rpc_data outdata; |
130 | ||
131 | rpc_cb cb; | |
132 | void *private_data; | |
133 | ||
763cd6e3 RS |
134 | /* function to decode the zdr reply data and buffer to decode into */ |
135 | zdrproc_t zdr_decode_fn; | |
136 | caddr_t zdr_decode_buf; | |
d14e2838 | 137 | uint32_t zdr_decode_bufsize; |
84004dbf RS |
138 | }; |
139 | ||
aec45c62 MH |
140 | void rpc_reset_queue(struct rpc_queue *q); |
141 | void rpc_enqueue(struct rpc_queue *q, struct rpc_pdu *pdu); | |
142 | void rpc_return_to_queue(struct rpc_queue *q, struct rpc_pdu *pdu); | |
63f36a09 | 143 | unsigned int rpc_hash_xid(uint32_t xid); |
aec45c62 | 144 | |
763cd6e3 | 145 | 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); |
84004dbf RS |
146 | void rpc_free_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu); |
147 | int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu); | |
148 | int rpc_get_pdu_size(char *buf); | |
149 | int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size); | |
150 | void rpc_error_all_pdus(struct rpc_context *rpc, char *error); | |
151 | ||
8406bfe4 AR |
152 | void rpc_set_error(struct rpc_context *rpc, char *error_string, ...) |
153 | #ifdef __GNUC__ | |
154 | __attribute__((format(printf, 2, 3))) | |
155 | #endif | |
156 | ; | |
157 | ||
158 | void nfs_set_error(struct nfs_context *nfs, char *error_string, ...) | |
159 | #ifdef __GNUC__ | |
160 | __attribute__((format(printf, 2, 3))) | |
161 | #endif | |
162 | ; | |
1896d37b | 163 | |
b077fdeb RS |
164 | const char *nfs_get_server(struct nfs_context *nfs); |
165 | const char *nfs_get_export(struct nfs_context *nfs); | |
1896d37b | 166 | |
485bc9b9 RS |
167 | /* we dont want to expose UDP to normal applications/users this is private to libnfs to use exclusively for broadcast RPC */ |
168 | int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port); | |
5bf60dc6 | 169 | int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast); |
9e00b8c6 | 170 | struct rpc_context *rpc_init_udp_context(void); |
c481da67 RS |
171 | struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc); |
172 | ||
1744ef90 RS |
173 | void rpc_set_autoreconnect(struct rpc_context *rpc); |
174 | void rpc_unset_autoreconnect(struct rpc_context *rpc); | |
175 | ||
1c8b4547 | 176 | void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v); |
9126c9c0 PL |
177 | void rpc_set_uid(struct rpc_context *rpc, int uid); |
178 | void rpc_set_gid(struct rpc_context *rpc, int gid); | |
3ca2aac9 | 179 | void rpc_set_readahead(struct rpc_context *rpc, uint32_t v); |
1c8b4547 | 180 | |
183451cf | 181 | int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size); |
d678b73e RS |
182 | void rpc_free_all_fragments(struct rpc_context *rpc); |
183 | ||
8724c833 | 184 | const struct nfs_fh3 *nfs_get_rootfh(struct nfs_context *nfs); |
83a446dd | 185 | |
324234ee AR |
186 | #ifdef __cplusplus |
187 | } | |
188 | #endif | |
189 | ||
83a446dd | 190 | #endif /* !_LIBNFS_PRIVATE_H_ */ |