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Diffstat (limited to 'nuttx/fs/nfs/nfs_node.h')
| -rw-r--r-- | nuttx/fs/nfs/nfs_node.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/nuttx/fs/nfs/nfs_node.h b/nuttx/fs/nfs/nfs_node.h new file mode 100644 index 000000000..4fe2553c5 --- /dev/null +++ b/nuttx/fs/nfs/nfs_node.h @@ -0,0 +1,157 @@ +/**************************************************************************** + * 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> + * + * 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 + ****************************************************************************/ + +#ifndef _NFS_NFS_H_ +# include <nfs/nfs.h> +#endif + +#include <sys/rwlock.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) + +/**************************************************************************** + * 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 +{ + RB_ENTRY(nfsnode) n_entry; /* filehandle/node tree. */ + uint64_t n_size; /* Current size of file */ +//struct vattr n_vattr; /* Vnode attribute cache */ + 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 */ +//struct lockf *n_lockf; /* Locking record of file */ + 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; /* Dir. EOF offset cache */ + } n_un2; +//struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */ + 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 */ +//struct ucred *n_rcred; +//struct ucred *n_wcred; + + 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 */ |