The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/fs/nfsclient/nfs.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1989, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * This code is derived from software contributed to Berkeley by
    8  * Rick Macklem at The University of Guelph.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. Neither the name of the University nor the names of its contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  * $FreeBSD: head/sys/fs/nfsclient/nfs.h 326023 2017-11-20 19:43:44Z pfg $
   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 ucred *, struct thread *,
   95     u_quad_t);
   96 void ncl_doio_directwrite(struct buf *);
   97 int ncl_bioread(struct vnode *, struct uio *, int, struct ucred *);
   98 int ncl_biowrite(struct vnode *, struct uio *, int, struct ucred *);
   99 int ncl_vinvalbuf(struct vnode *, int, struct thread *, int);
  100 int ncl_asyncio(struct nfsmount *, struct buf *, struct ucred *,
  101     struct thread *);
  102 int ncl_doio(struct vnode *, struct buf *, struct ucred *, struct thread *,
  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 ucred *);
  110 int ncl_writerpc(struct vnode *, struct uio *, struct ucred *, int *, int *,
  111     int);
  112 int ncl_readlinkrpc(struct vnode *, struct uio *, struct ucred *);
  113 int ncl_readdirrpc(struct vnode *, struct uio *, struct ucred *,
  114     struct thread *);
  115 int ncl_readdirplusrpc(struct vnode *, struct uio *, struct ucred *,
  116     struct thread *);
  117 int ncl_writebp(struct buf *, int, struct thread *);
  118 int ncl_commit(struct vnode *, u_quad_t, int, struct ucred *, struct thread *);
  119 void ncl_clearcommit(struct mount *);
  120 int ncl_fsinfo(struct nfsmount *, struct vnode *, struct ucred *,
  121     struct thread *);
  122 int ncl_init(struct vfsconf *);
  123 int ncl_uninit(struct vfsconf *);
  124 void    ncl_nfsiodnew(void);
  125 void    ncl_nfsiodnew_tq(__unused void *, int);
  126 
  127 #endif  /* _KERNEL */
  128 
  129 #endif  /* _NFSCLIENT_NFS_H_ */

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