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  * Copyright (c) 1989, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * Rick Macklem at The University of Guelph.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 4. Neither the name of the University nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/11.1/sys/fs/nfsclient/nfs.h 276140 2014-12-23 14:24:36Z rmacklem $
   33  */
   34 
   35 #ifndef _NFSCLIENT_NFS_H_
   36 #define _NFSCLIENT_NFS_H_
   37 
   38 #if defined(_KERNEL)
   39 
   40 #ifndef NFS_TPRINTF_INITIAL_DELAY
   41 #define NFS_TPRINTF_INITIAL_DELAY       12
   42 #endif
   43 
   44 #ifndef NFS_TPRINTF_DELAY
   45 #define NFS_TPRINTF_DELAY               30
   46 #endif
   47 
   48 /*
   49  * Nfs version macros.
   50  */
   51 #define NFS_ISV3(v) \
   52         (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
   53 #define NFS_ISV4(v) \
   54         (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV4)
   55 #define NFS_ISV34(v) \
   56         (VFSTONFS((v)->v_mount)->nm_flag & (NFSMNT_NFSV3 | NFSMNT_NFSV4))
   57 
   58 #ifdef NFS_DEBUG
   59 
   60 extern int nfs_debug;
   61 #define NFS_DEBUG_ASYNCIO       1 /* asynchronous i/o */
   62 #define NFS_DEBUG_WG            2 /* server write gathering */
   63 #define NFS_DEBUG_RC            4 /* server request caching */
   64 
   65 #define NFS_DPF(cat, args)                                      \
   66         do {                                                    \
   67                 if (nfs_debug & NFS_DEBUG_##cat) printf args;   \
   68         } while (0)
   69 
   70 #else
   71 
   72 #define NFS_DPF(cat, args)
   73 
   74 #endif
   75 
   76 /*
   77  * NFS iod threads can be in one of these three states once spawned.
   78  * NFSIOD_NOT_AVAILABLE - Cannot be assigned an I/O operation at this time.
   79  * NFSIOD_AVAILABLE - Available to be assigned an I/O operation.
   80  * NFSIOD_CREATED_FOR_NFS_ASYNCIO - Newly created for nfs_asyncio() and
   81  *      will be used by the thread that called nfs_asyncio().
   82  */
   83 enum nfsiod_state {
   84         NFSIOD_NOT_AVAILABLE = 0,
   85         NFSIOD_AVAILABLE = 1,
   86         NFSIOD_CREATED_FOR_NFS_ASYNCIO = 2,
   87 };
   88 
   89 /*
   90  * Function prototypes.
   91  */
   92 int ncl_meta_setsize(struct vnode *, struct ucred *, struct thread *,
   93     u_quad_t);
   94 void ncl_doio_directwrite(struct buf *);
   95 int ncl_bioread(struct vnode *, struct uio *, int, struct ucred *);
   96 int ncl_biowrite(struct vnode *, struct uio *, int, struct ucred *);
   97 int ncl_vinvalbuf(struct vnode *, int, struct thread *, int);
   98 int ncl_asyncio(struct nfsmount *, struct buf *, struct ucred *,
   99     struct thread *);
  100 int ncl_doio(struct vnode *, struct buf *, struct ucred *, struct thread *,
  101     int);
  102 void ncl_nhinit(void);
  103 void ncl_nhuninit(void);
  104 void ncl_nodelock(struct nfsnode *);
  105 void ncl_nodeunlock(struct nfsnode *);
  106 int ncl_getattrcache(struct vnode *, struct vattr *);
  107 int ncl_readrpc(struct vnode *, struct uio *, struct ucred *);
  108 int ncl_writerpc(struct vnode *, struct uio *, struct ucred *, int *, int *,
  109     int);
  110 int ncl_readlinkrpc(struct vnode *, struct uio *, struct ucred *);
  111 int ncl_readdirrpc(struct vnode *, struct uio *, struct ucred *,
  112     struct thread *);
  113 int ncl_readdirplusrpc(struct vnode *, struct uio *, struct ucred *,
  114     struct thread *);
  115 int ncl_writebp(struct buf *, int, struct thread *);
  116 int ncl_commit(struct vnode *, u_quad_t, int, struct ucred *, struct thread *);
  117 void ncl_clearcommit(struct mount *);
  118 int ncl_fsinfo(struct nfsmount *, struct vnode *, struct ucred *,
  119     struct thread *);
  120 int ncl_init(struct vfsconf *);
  121 int ncl_uninit(struct vfsconf *);
  122 void    ncl_nfsiodnew(void);
  123 void    ncl_nfsiodnew_tq(__unused void *, int);
  124 
  125 #endif  /* _KERNEL */
  126 
  127 #endif  /* _NFSCLIENT_NFS_H_ */

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