1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/****************************************************************************
* fs/nfs/nfs_mount.h
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Copyright (C) 2012 Jose Pablo Rojas Vargas. All rights reserved.
* Author: Jose Pablo Rojas Vargas <jrojas@nx-engineering.com>
* Gregory Nutt <gnutt@nuttx.org>
*
* Leveraged from OpenBSD:
*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
****************************************************************************/
#ifndef __FS_NFS_NFS_MOUNT_H
#define __FS_NFS_NFS_MOUNT_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/socket.h>
#include "rpc.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Types
****************************************************************************/
/* Mount structure. One mount structure is allocated for each NFS mount. This
* structure holds NFS specific information for mount.
*/
struct nfsmount
{
struct nfsnode *nm_head; /* A list of all files opened on this mountpoint */
sem_t nm_sem; /* Used to assure thread-safe access */
nfsfh_t nm_fh; /* File handle of root dir */
char nm_path[90]; /* server's path of the directory being mounted */
struct nfs_fattr nm_fattr; /* nfs file attribute cache */
struct rpcclnt *nm_rpcclnt; /* RPC state */
struct socket *nm_so; /* RPC socket */
struct sockaddr nm_nam; /* Addr of server */
bool nm_mounted; /* true: The file system is ready */
uint8_t nm_fhsize; /* Size of root file handle (host order) */
uint8_t nm_sotype; /* Type of socket */
uint8_t nm_retry; /* Max retries */
uint16_t nm_timeo; /* Timeout value (in system clock ticks) */
uint16_t nm_rsize; /* Max size of read RPC */
uint16_t nm_wsize; /* Max size of write RPC */
uint16_t nm_readdirsize; /* Size of a readdir RPC */
uint16_t nm_buflen; /* Size of I/O buffer */
/* Set aside memory on the stack to hold the largest call message. NOTE
* that for the case of the write call message, it is the reply message that
* is in this union.
*/
union
{
struct rpc_call_pmap pmap;
struct rpc_call_mount mountd;
struct rpc_call_create create;
struct rpc_call_lookup lookup;
struct rpc_call_read read;
struct rpc_call_remove removef;
struct rpc_call_rename renamef;
struct rpc_call_mkdir mkdir;
struct rpc_call_rmdir rmdir;
struct rpc_call_readdir readdir;
struct rpc_call_fs fsstat;
struct rpc_call_setattr setattr;
struct rpc_call_fs fs;
struct rpc_reply_write write;
} nm_msgbuffer;
/* I/O buffer (must be a aligned to 32-bit boundaries). This buffer used for all
* reply messages EXCEPT for the WRITE RPC. In that case it is used for the WRITE
* call message that contains the data to be written. This buffer must be
* dynamically sized based on the characteristics of the server and upon the
* configuration of the NuttX network. It must be sized to hold the largest
* possible WRITE call message or READ response message.
*/
uint32_t nm_iobuffer[1]; /* Actual size is given by nm_buflen */
};
/* The size of the nfsmount structure will debug on the size of the allocated I/O
* buffer.
*/
#define SIZEOF_nfsmount(n) (sizeof(struct nfsmount) + ((n + 3) & ~3) - sizeof(uint32_t))
/* Mount parameters structure. This structure is use in nfs_decode_args funtion before one
* mount structure is allocated in each NFS mount.
*/
struct nfs_mount_parameters
{
uint8_t timeo; /* Timeout value (in deciseconds) */
uint8_t retry; /* Max retries */
uint16_t rsize; /* Max size of read RPC */
uint16_t wsize; /* Max size of write RPC */
uint16_t readdirsize; /* Size of a readdir RPC */
};
#endif
|
