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Diffstat (limited to 'sys/nfsclient/nfsnode.h')
| -rw-r--r-- | sys/nfsclient/nfsnode.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/sys/nfsclient/nfsnode.h b/sys/nfsclient/nfsnode.h new file mode 100644 index 000000000000..f5fee5bf2f3a --- /dev/null +++ b/sys/nfsclient/nfsnode.h @@ -0,0 +1,166 @@ +/* + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + * + * @(#)nfsnode.h 8.4 (Berkeley) 2/13/94 + */ + +/* + * 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[20]; +}; + +/* + * 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 { + struct nfsnode *n_forw; /* hash, forward */ + struct nfsnode **n_back; /* hash, backward */ + nfsv2fh_t n_fh; /* NFS File Handle */ + long n_flag; /* Flag for locking.. */ + struct vnode *n_vnode; /* vnode associated with this node */ + struct vattr n_vattr; /* Vnode attribute cache */ + time_t n_attrstamp; /* Time stamp for cached attributes */ + struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */ + u_quad_t n_size; /* Current size of file */ + int n_error; /* Save write error value */ + u_long n_direofoffset; /* Dir. EOF offset cache */ + time_t n_mtime; /* Prev modify time. */ + time_t n_ctime; /* Prev create time. */ + u_quad_t n_brev; /* Modify rev when cached */ + u_quad_t n_lrev; /* Modify rev for lease */ + time_t n_expiry; /* Lease expiry time */ + struct nfsnode *n_tnext; /* Nqnfs timer chain */ + struct nfsnode *n_tprev; + long spare1; /* To 8 byte boundary */ + struct sillyrename n_silly; /* Silly rename struct */ + struct timeval n_atim; /* Special file times */ + struct timeval n_mtim; +}; + +/* + * 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 NQNFSNONCACHE 0x0020 /* Non-cachable lease */ +#define NQNFSWRITE 0x0040 /* Write lease */ +#define NQNFSEVICTED 0x0080 /* Has been evicted */ +#define NACC 0x0100 /* Special file accessed */ +#define NUPD 0x0200 /* Special file updated */ +#define NCHG 0x0400 /* Special file times changed */ + +/* + * Convert between nfsnode pointers and vnode pointers + */ +#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) +#define NFSTOV(np) ((struct vnode *)(np)->n_vnode) + +/* + * Queue head for nfsiod's + */ +TAILQ_HEAD(nfsbufs, buf) nfs_bufq; + +#ifdef KERNEL +/* + * Prototypes for NFS vnode operations + */ +int nfs_lookup __P((struct vop_lookup_args *)); +int nfs_create __P((struct vop_create_args *)); +int nfs_mknod __P((struct vop_mknod_args *)); +int nfs_open __P((struct vop_open_args *)); +int nfs_close __P((struct vop_close_args *)); +int nfsspec_close __P((struct vop_close_args *)); +#ifdef FIFO +int nfsfifo_close __P((struct vop_close_args *)); +#endif +int nfs_access __P((struct vop_access_args *)); +int nfsspec_access __P((struct vop_access_args *)); +int nfs_getattr __P((struct vop_getattr_args *)); +int nfs_setattr __P((struct vop_setattr_args *)); +int nfs_read __P((struct vop_read_args *)); +int nfs_write __P((struct vop_write_args *)); +int nfsspec_read __P((struct vop_read_args *)); +int nfsspec_write __P((struct vop_write_args *)); +#ifdef FIFO +int nfsfifo_read __P((struct vop_read_args *)); +int nfsfifo_write __P((struct vop_write_args *)); +#endif +#define nfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))enoioctl) +#define nfs_select ((int (*) __P((struct vop_select_args *)))seltrue) +int nfs_mmap __P((struct vop_mmap_args *)); +int nfs_fsync __P((struct vop_fsync_args *)); +#define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) +int nfs_remove __P((struct vop_remove_args *)); +int nfs_link __P((struct vop_link_args *)); +int nfs_rename __P((struct vop_rename_args *)); +int nfs_mkdir __P((struct vop_mkdir_args *)); +int nfs_rmdir __P((struct vop_rmdir_args *)); +int nfs_symlink __P((struct vop_symlink_args *)); +int nfs_readdir __P((struct vop_readdir_args *)); +int nfs_readlink __P((struct vop_readlink_args *)); +int nfs_abortop __P((struct vop_abortop_args *)); +int nfs_inactive __P((struct vop_inactive_args *)); +int nfs_reclaim __P((struct vop_reclaim_args *)); +int nfs_lock __P((struct vop_lock_args *)); +int nfs_unlock __P((struct vop_unlock_args *)); +int nfs_bmap __P((struct vop_bmap_args *)); +int nfs_strategy __P((struct vop_strategy_args *)); +int nfs_print __P((struct vop_print_args *)); +int nfs_islocked __P((struct vop_islocked_args *)); +int nfs_pathconf __P((struct vop_pathconf_args *)); +int nfs_advlock __P((struct vop_advlock_args *)); +int nfs_blkatoff __P((struct vop_blkatoff_args *)); +int nfs_vget __P((struct mount *, ino_t, struct vnode **)); +int nfs_valloc __P((struct vop_valloc_args *)); +#define nfs_reallocblks \ + ((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp) +int nfs_vfree __P((struct vop_vfree_args *)); +int nfs_truncate __P((struct vop_truncate_args *)); +int nfs_update __P((struct vop_update_args *)); +int nfs_bwrite __P((struct vop_bwrite_args *)); +#endif /* KERNEL */ |