You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
159 lines
6.7 KiB
159 lines
6.7 KiB
/**************************************************************************** |
|
* fs/nfs/nfs_node.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> |
|
* |
|
* 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. |
|
* 3. 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_NODE_H |
|
#define __FS_NFS_NFS_NODE_H |
|
|
|
/**************************************************************************** |
|
* Included Files |
|
****************************************************************************/ |
|
|
|
#include "nfs.h" |
|
|
|
/**************************************************************************** |
|
* Pre-processor Definitions |
|
****************************************************************************/ |
|
|
|
/* Values for n_commitflags */ |
|
|
|
#define NFS_COMMIT_PUSH_VALID 0x0001/* push range valid */ |
|
#define NFS_COMMIT_PUSHED_VALID 0x0002/* pushed range valid */ |
|
|
|
#define n_atim n_un1.nf_atim |
|
#define n_mtim n_un2.nf_mtim |
|
#define n_cookieverf n_un1.nd_cookieverf |
|
#define n_direofoffset n_un2.nd_direof |
|
|
|
/* Flags for n_flag */ |
|
|
|
#define NFLUSHWANT 0x0001/* Want wakeup from a flush in prog. */ |
|
#define NFLUSHINPROG 0x0002/* Avoid multiple calls to vinvalbuf() */ |
|
#define NMODIFIED 0x0004/* Might have a modified buffer in bio */ |
|
#define NWRITEERR 0x0008/* Flag write errors so close will know */ |
|
#define NACC 0x0100/* Special file accessed */ |
|
#define NUPD 0x0200/* Special file updated */ |
|
#define NCHG 0x0400/* Special file times changed */ |
|
|
|
#define NFS_INVALIDATE_ATTRCACHE(np) ((np)->n_attrstamp = 0) |
|
|
|
/* Convert between nfsnode pointers and vnode pointers */ |
|
|
|
#define VTONFS(vp) ((struct nfsnode *)(vp)->f_priv) |
|
#define NFSTOV(np) ((np)->n_vnode) |
|
|
|
#define n_atim n_un1.nf_atim |
|
#define n_mtim n_un2.nf_mtim |
|
#define n_sillyrename n_un3.nf_silly |
|
#define n_cookieverf n_un1.nd_cookieverf |
|
#define n4_cookieverf n_un1.nd4_cookieverf |
|
#define n_direofoffset n_un2.nd_direof |
|
#define n_cookies n_un3.nd_cook |
|
|
|
/**************************************************************************** |
|
* Public Types |
|
****************************************************************************/ |
|
|
|
/* Silly rename structure that hangs off the nfsnode until the name |
|
* can be removed by nfs_inactive() |
|
|
|
struct sillyrename |
|
{ |
|
struct ucred *s_cred; |
|
struct vnode *s_dvp; |
|
long s_namlen; |
|
char s_name[24]; |
|
}; |
|
*/ |
|
|
|
/* The nfsnode is the nfs equivalent to ufs's inode. Any similarity |
|
* is purely coincidental. |
|
* There is a unique nfsnode allocated for each active file, |
|
* each current directory, each mounted-on file, text file, and the root. |
|
* An nfsnode is 'named' by its file handle. (nget/nfs_node.c) |
|
* If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite |
|
* type definitions), file handles of > 32 bytes should probably be split out |
|
* into a separate malloc()'d data structure. (Reduce the size of nfsfh_t by |
|
* changing the definition in sys/mount.h of NFS_SMALLFH.) |
|
* NB: Hopefully the current order of the fields is such that everything will |
|
* be well aligned and, therefore, tightly packed. |
|
*/ |
|
|
|
struct nfsnode |
|
{ |
|
struct nfsnode *n_next; /* Retained in a singly linked list filehandle/node tree. */ |
|
bool n_open; /* true: The file is (still) open */ |
|
uint64_t n_size; /* Current size of file */ |
|
struct nfs_fattr n_fattr; /* nfs file attribute cache */ |
|
nfstype nfsv3_type; /* File type */ |
|
time_t n_attrstamp; /* Attr. cache timestamp */ |
|
struct timespec n_mtime; /* Prev modify time. */ |
|
time_t n_ctime; /* Prev create time. */ |
|
nfsfh_t n_fhp; /* NFS File Handle */ |
|
struct inode *n_inode; /* associated inode */ |
|
int n_error; /* Save write error value */ |
|
union |
|
{ |
|
struct timespec nf_atim; /* Special file times */ |
|
nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ |
|
} n_un1; |
|
union |
|
{ |
|
struct timespec nf_mtim; |
|
off_t nd_direof; /* Directory EOF offset cache */ |
|
} n_un2; |
|
short n_fhsize; /* size in bytes, of fh */ |
|
short n_flag; /* Flag for locking.. */ |
|
nfsfh_t n_fh; /* Small File Handle */ |
|
time_t n_accstamp; /* Access cache timestamp */ |
|
uid_t n_accuid; /* Last access requester */ |
|
int n_accmode; /* Last mode requested */ |
|
int n_accerror; /* Last returned error */ |
|
|
|
off_t n_pushedlo; /* 1st blk in commited range */ |
|
off_t n_pushedhi; /* Last block in range */ |
|
off_t n_pushlo; /* 1st block in commit range */ |
|
off_t n_pushhi; /* Last block in range */ |
|
//struct rwlock n_commitlock; /* Serialize commits */ |
|
int n_commitflags; |
|
}; |
|
|
|
#endif /* __FS_NFS_NFS_NODE_H */
|
|
|