nfs_rename_continue_1_internal: fix use-after-free
[deb_libnfs.git] / include / libnfs-private.h
... / ...
CommitLineData
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
18#ifndef _LIBNFS_PRIVATE_H_
19#define _LIBNFS_PRIVATE_H_
20
21#ifdef HAVE_CONFIG_H
22#include "config.h" /* HAVE_SOCKADDR_STORAGE ? */
23#endif
24
25#ifndef WIN32
26#include <sys/socket.h> /* struct sockaddr_storage */
27#endif
28
29#include "libnfs-zdr.h"
30
31#ifdef __cplusplus
32extern "C" {
33#endif
34
35#if !defined(HAVE_SOCKADDR_STORAGE) && !defined(WIN32)
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
45struct sockaddr_storage {
46#ifdef HAVE_SOCKADDR_LEN
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
59struct rpc_fragment {
60 struct rpc_fragment *next;
61 uint64_t size;
62 char *data;
63};
64
65#define RPC_CONTEXT_MAGIC 0xc6e46435
66#define RPC_PARAM_UNDEFINED -1
67
68struct rpc_context {
69 uint32_t magic;
70 int fd;
71 int is_connected;
72
73 char *error_string;
74
75 rpc_cb connect_cb;
76 void *connect_data;
77
78 struct AUTH *auth;
79 uint32_t xid;
80
81 /* buffer used for encoding RPC PDU */
82 char *encodebuf;
83 int encodebuflen;
84
85 struct rpc_pdu *outqueue;
86 struct sockaddr_storage udp_src;
87 struct rpc_pdu *waitpdu;
88
89 uint32_t inpos;
90 uint32_t insize;
91 char *inbuf;
92
93 /* special fields for UDP, which can sometimes be BROADCASTed */
94 int is_udp;
95 struct sockaddr *udp_dest;
96 int is_broadcast;
97
98 /* track the address we connect to so we can auto-reconnect on session failure */
99 struct sockaddr_storage s;
100 int auto_reconnect;
101
102 /* fragment reassembly */
103 struct rpc_fragment *fragments;
104
105 /* parameters passable via URL */
106 int tcp_syncnt;
107 int uid;
108 int gid;
109};
110
111struct rpc_pdu {
112 struct rpc_pdu *next;
113
114 uint32_t xid;
115 ZDR zdr;
116
117 uint32_t written;
118 struct rpc_data outdata;
119
120 rpc_cb cb;
121 void *private_data;
122
123 /* function to decode the zdr reply data and buffer to decode into */
124 zdrproc_t zdr_decode_fn;
125 caddr_t zdr_decode_buf;
126 uint32_t zdr_decode_bufsize;
127};
128
129struct 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);
130void rpc_free_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu);
131int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu);
132int rpc_get_pdu_size(char *buf);
133int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size);
134void rpc_error_all_pdus(struct rpc_context *rpc, char *error);
135
136void rpc_set_error(struct rpc_context *rpc, char *error_string, ...);
137void nfs_set_error(struct nfs_context *nfs, char *error_string, ...);
138
139const char *nfs_get_server(struct nfs_context *nfs);
140const char *nfs_get_export(struct nfs_context *nfs);
141
142/* we dont want to expose UDP to normal applications/users this is private to libnfs to use exclusively for broadcast RPC */
143int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port);
144int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast);
145struct rpc_context *rpc_init_udp_context(void);
146struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc);
147
148void rpc_set_autoreconnect(struct rpc_context *rpc);
149void rpc_unset_autoreconnect(struct rpc_context *rpc);
150
151void rpc_set_tcp_syncnt(struct rpc_context *rpc, int v);
152void rpc_set_uid(struct rpc_context *rpc, int uid);
153void rpc_set_gid(struct rpc_context *rpc, int gid);
154
155int rpc_add_fragment(struct rpc_context *rpc, char *data, uint64_t size);
156void rpc_free_all_fragments(struct rpc_context *rpc);
157
158const struct nfs_fh3 *nfs_get_rootfh(struct nfs_context *nfs);
159
160#ifdef __cplusplus
161}
162#endif
163
164#endif /* !_LIBNFS_PRIVATE_H_ */