* Copyright (c) 1989 The Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
* %sccs.include.redist.c%
* @(#)nfsnode.h 7.16 (Berkeley) %G%
* Silly rename structure that hangs off the nfsnode until the name
* can be removed by nfs_inactive()
* 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)
struct nfsnode
*n_chain
[2]; /* must be first */
nfsv2fh_t n_fh
; /* NFS File Handle */
long n_flag
; /* Flag for locking.. */
struct vnode
*n_vnode
; /* vnode associated with this node */
time_t n_attrstamp
; /* Time stamp for cached attributes */
struct vattr n_vattr
; /* Vnode attribute cache */
struct sillyrename
*n_sillyrename
; /* Ptr to silly rename struct */
u_long n_size
; /* Current size of file */
int n_error
; /* Save write error value */
u_long n_direofoffset
; /* Dir. EOF offset cache */
time_t un_mtime
; /* Prev modify time. */
time_t un_ctime
; /* Prev create time. */
u_quad_t un_brev
; /* Modify rev when cached */
u_quad_t un_lrev
; /* Modify rev for lease */
time_t un_expiry
; /* Lease expiry time */
struct nfsnode
*un_tnext
; /* Nqnfs timer chain */
struct nfsnode
*un_tprev
;
struct sillyrename n_silly
; /* Silly rename struct */
long n_spare
[11]; /* Up to a power of 2 */
#define n_mtime n_un.un_nfs.un_mtime
#define n_ctime n_un.un_nfs.un_ctime
#define n_brev n_un.un_nqnfs.un_brev
#define n_lrev n_un.un_nqnfs.un_lrev
#define n_expiry n_un.un_nqnfs.un_expiry
#define n_tnext n_un.un_nqnfs.un_tnext
#define n_tprev n_un.un_nqnfs.un_tprev
#define n_forw n_chain[0]
#define n_back n_chain[1]
* Convert between nfsnode pointers and vnode pointers
#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
#define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
#define NMODIFIED 0x0004 /* Might have a modified buffer in bio */
#define NWRITEERR 0x0008 /* Flag write errors so close will know */
#define NQNFSNONCACHE 0x0020 /* Non-cachable lease */
#define NQNFSWRITE 0x0040 /* Write lease */
#define NQNFSEVICTED 0x0080 /* Has been evicted */
* Prototypes for NFS vnode operations
#define nfs_ioctl ((int (*) __P(( \
struct proc *p))) enoioctl)
#define nfs_select ((int (*) __P(( \
struct proc *p))) seltrue)
#define nfs_seek ((int (*) __P(( \
struct ucred *cred))) nullop)
int bwrite(); /* NFS needs a bwrite routine */