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      1 /*	$NetBSD: nfs.h,v 1.2 2016/12/13 22:54:24 pgoyette Exp $	*/
      2 /*-
      3  * Copyright (c) 1989, 1993
      4  *	The Regents of the University of California.  All rights reserved.
      5  *
      6  * This code is derived from software contributed to Berkeley by
      7  * Rick Macklem at The University of Guelph.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  * FreeBSD: head/sys/fs/nfsclient/nfs.h 276140 2014-12-23 14:24:36Z rmacklem
     34  * $NetBSD: nfs.h,v 1.2 2016/12/13 22:54:24 pgoyette Exp $
     35  */
     36 
     37 #ifndef _NFSCLIENT_NFS_H_
     38 #define	_NFSCLIENT_NFS_H_
     39 
     40 #if defined(_KERNEL)
     41 
     42 #ifndef NFS_TPRINTF_INITIAL_DELAY
     43 #define	NFS_TPRINTF_INITIAL_DELAY       12
     44 #endif
     45 
     46 #ifndef NFS_TPRINTF_DELAY
     47 #define	NFS_TPRINTF_DELAY               30
     48 #endif
     49 
     50 /*
     51  * Nfs version macros.
     52  */
     53 #define	NFS_ISV3(v) \
     54 	(VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
     55 #define	NFS_ISV4(v) \
     56 	(VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV4)
     57 #define	NFS_ISV34(v) \
     58 	(VFSTONFS((v)->v_mount)->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4))
     59 
     60 #ifdef NFS_DEBUG
     61 
     62 extern int nfs_debug;
     63 #define	NFS_DEBUG_ASYNCIO	1 /* asynchronous i/o */
     64 #define	NFS_DEBUG_WG		2 /* server write gathering */
     65 #define	NFS_DEBUG_RC		4 /* server request caching */
     66 
     67 #define	NFS_DPF(cat, args)					\
     68 	do {							\
     69 		if (nfs_debug & NFS_DEBUG_##cat) printf args;	\
     70 	} while (0)
     71 
     72 #else
     73 
     74 #define	NFS_DPF(cat, args)
     75 
     76 #endif
     77 
     78 /*
     79  * NFS iod threads can be in one of these three states once spawned.
     80  * NFSIOD_NOT_AVAILABLE - Cannot be assigned an I/O operation at this time.
     81  * NFSIOD_AVAILABLE - Available to be assigned an I/O operation.
     82  * NFSIOD_CREATED_FOR_NFS_ASYNCIO - Newly created for nfs_asyncio() and
     83  *	will be used by the thread that called nfs_asyncio().
     84  */
     85 enum nfsiod_state {
     86 	NFSIOD_NOT_AVAILABLE = 0,
     87 	NFSIOD_AVAILABLE = 1,
     88 	NFSIOD_CREATED_FOR_NFS_ASYNCIO = 2,
     89 };
     90 
     91 /*
     92  * Function prototypes.
     93  */
     94 int ncl_meta_setsize(struct vnode *, struct kauth_cred *, struct lwp *,
     95     u_quad_t);
     96 void ncl_doio_directwrite(struct buf *);
     97 int ncl_bioread(struct vnode *, struct uio *, int, struct kauth_cred *);
     98 int ncl_biowrite(struct vnode *, struct uio *, int, struct kauth_cred *);
     99 int ncl_vinvalbuf(struct vnode *, int, struct kauth_cred *, int);
    100 int ncl_asyncio(struct nfsmount *, struct buf *, struct kauth_cred *,
    101     struct lwp *);
    102 int ncl_doio(struct vnode *, struct buf *, struct kauth_cred *, struct lwp *,
    103     int);
    104 void ncl_nhinit(void);
    105 void ncl_nhuninit(void);
    106 void ncl_nodelock(struct nfsnode *);
    107 void ncl_nodeunlock(struct nfsnode *);
    108 int ncl_getattrcache(struct vnode *, struct vattr *);
    109 int ncl_readrpc(struct vnode *, struct uio *, struct kauth_cred *);
    110 int ncl_writerpc(struct vnode *, struct uio *, struct kauth_cred *, int *,
    111     int *, int);
    112 int ncl_readlinkrpc(struct vnode *, struct uio *, struct kauth_cred *);
    113 int ncl_readdirrpc(struct vnode *, struct uio *, struct kauth_cred *,
    114     struct lwp *);
    115 int ncl_readdirplusrpc(struct vnode *, struct uio *, struct kauth_cred *,
    116     struct lwp *);
    117 int ncl_writebp(struct buf *, int, struct lwp *);
    118 int ncl_commit(struct vnode *, u_quad_t, int, struct kauth_cred *,
    119     struct lwp *);
    120 void ncl_clearcommit(struct mount *);
    121 int ncl_fsinfo(struct nfsmount *, struct vnode *, struct kauth_cred *,
    122     struct lwp *);
    123 int ncl_init(struct vfsconf *);
    124 int ncl_uninit(struct vfsconf *);
    125 void	ncl_nfsiodnew(void);
    126 void	ncl_nfsiodnew_tq(__unused void *, int);
    127 
    128 #endif	/* _KERNEL */
    129 
    130 #endif	/* _NFSCLIENT_NFS_H_ */
    131