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140 lines
6.1 KiB
140 lines
6.1 KiB
/**************************************************************************** |
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* fs/nfs/nfs_mount.h |
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* |
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* Copyright (C) 2012 Gregory Nutt. All rights reserved. |
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* Copyright (C) 2012 Jose Pablo Rojas Vargas. All rights reserved. |
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* Author: Jose Pablo Rojas Vargas <jrojas@nx-engineering.com> |
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* Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Leveraged from OpenBSD: |
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* |
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* Copyright (c) 1989, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* This code is derived from software contributed to Berkeley by |
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* Rick Macklem at The University of Guelph. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 4. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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#ifndef __FS_NFS_NFS_MOUNT_H |
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#define __FS_NFS_NFS_MOUNT_H |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <sys/socket.h> |
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#include "rpc.h" |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Public Types |
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****************************************************************************/ |
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/* Mount structure. One mount structure is allocated for each NFS mount. This |
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* structure holds NFS specific information for mount. |
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*/ |
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struct nfsmount |
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{ |
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struct nfsnode *nm_head; /* A list of all files opened on this mountpoint */ |
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sem_t nm_sem; /* Used to assure thread-safe access */ |
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nfsfh_t nm_fh; /* File handle of root dir */ |
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char nm_path[90]; /* server's path of the directory being mounted */ |
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struct nfs_fattr nm_fattr; /* nfs file attribute cache */ |
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struct rpcclnt *nm_rpcclnt; /* RPC state */ |
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struct socket *nm_so; /* RPC socket */ |
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struct sockaddr nm_nam; /* Addr of server */ |
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bool nm_mounted; /* true: The file system is ready */ |
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uint8_t nm_fhsize; /* Size of root file handle (host order) */ |
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uint8_t nm_sotype; /* Type of socket */ |
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uint8_t nm_retry; /* Max retries */ |
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uint16_t nm_timeo; /* Timeout value (in system clock ticks) */ |
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uint16_t nm_rsize; /* Max size of read RPC */ |
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uint16_t nm_wsize; /* Max size of write RPC */ |
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uint16_t nm_readdirsize; /* Size of a readdir RPC */ |
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uint16_t nm_buflen; /* Size of I/O buffer */ |
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/* Set aside memory on the stack to hold the largest call message. NOTE |
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* that for the case of the write call message, it is the reply message that |
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* is in this union. |
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*/ |
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union |
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{ |
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struct rpc_call_pmap pmap; |
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struct rpc_call_mount mountd; |
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struct rpc_call_create create; |
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struct rpc_call_lookup lookup; |
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struct rpc_call_read read; |
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struct rpc_call_remove removef; |
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struct rpc_call_rename renamef; |
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struct rpc_call_mkdir mkdir; |
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struct rpc_call_rmdir rmdir; |
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struct rpc_call_readdir readdir; |
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struct rpc_call_fs fsstat; |
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struct rpc_call_setattr setattr; |
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struct rpc_call_fs fs; |
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struct rpc_reply_write write; |
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} nm_msgbuffer; |
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/* I/O buffer (must be a aligned to 32-bit boundaries). This buffer used for all |
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* reply messages EXCEPT for the WRITE RPC. In that case it is used for the WRITE |
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* call message that contains the data to be written. This buffer must be |
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* dynamically sized based on the characteristics of the server and upon the |
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* configuration of the NuttX network. It must be sized to hold the largest |
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* possible WRITE call message or READ response message. |
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*/ |
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uint32_t nm_iobuffer[1]; /* Actual size is given by nm_buflen */ |
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}; |
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/* The size of the nfsmount structure will debug on the size of the allocated I/O |
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* buffer. |
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*/ |
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#define SIZEOF_nfsmount(n) (sizeof(struct nfsmount) + ((n + 3) & ~3) - sizeof(uint32_t)) |
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/* Mount parameters structure. This structure is use in nfs_decode_args funtion before one |
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* mount structure is allocated in each NFS mount. |
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*/ |
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struct nfs_mount_parameters |
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{ |
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uint8_t timeo; /* Timeout value (in deciseconds) */ |
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uint8_t retry; /* Max retries */ |
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uint16_t rsize; /* Max size of read RPC */ |
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uint16_t wsize; /* Max size of write RPC */ |
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uint16_t readdirsize; /* Size of a readdir RPC */ |
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}; |
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#endif
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