/**************************************************************************** * 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 * Gregory Nutt * * 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 #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