text: /*-
   * Copyright (c) 2009 Rick Macklem, University of Guelph
   * All rights reserved.
   *
   * 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.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
   *
   * $FreeBSD: release/9.0.0/sys/fs/nfs/nfsdport.h 224086 2011-07-16 08:51:09Z zack $
   */
  
  /*
   * These macros handle nfsvattr fields. They look a bit silly here, but
   * are quite different for the Darwin port.
   */
  #define	NFSVNO_ATTRINIT(n)		(VATTR_NULL(&((n)->na_vattr)))
  #define	NFSVNO_SETATTRVAL(n, f, v)	((n)->na_##f = (v))
  #define	NFSVNO_SETACTIVE(n, f)
  #define	NFSVNO_UNSET(n, f)		((n)->na_##f = VNOVAL)
  #define	NFSVNO_NOTSETMODE(n)		((n)->na_mode == ((mode_t)VNOVAL))
  #define	NFSVNO_ISSETMODE(n)		((n)->na_mode != ((mode_t)VNOVAL))
  #define	NFSVNO_NOTSETUID(n)		((n)->na_uid == ((uid_t)VNOVAL))
  #define	NFSVNO_ISSETUID(n)		((n)->na_uid != ((uid_t)VNOVAL))
  #define	NFSVNO_NOTSETGID(n)		((n)->na_gid == ((gid_t)VNOVAL))
  #define	NFSVNO_ISSETGID(n)		((n)->na_gid != ((gid_t)VNOVAL))
  #define	NFSVNO_NOTSETSIZE(n)		((n)->na_size == VNOVAL)
  #define	NFSVNO_ISSETSIZE(n)		((n)->na_size != VNOVAL)
  #define	NFSVNO_NOTSETATIME(n)		((n)->na_atime.tv_sec == VNOVAL)
  #define	NFSVNO_ISSETATIME(n)		((n)->na_atime.tv_sec != VNOVAL)
  #define	NFSVNO_NOTSETMTIME(n)		((n)->na_mtime.tv_sec == VNOVAL)
  #define	NFSVNO_ISSETMTIME(n)		((n)->na_mtime.tv_sec != VNOVAL)
  
  /*
   * This structure acts as a "catch-all" for information that
   * needs to be returned by nfsd_fhtovp().
   */
  struct nfsexstuff {
  	int	nes_exflag;			/* export flags */
  	int	nes_numsecflavor;		/* # of security flavors */
  	int	nes_secflavors[MAXSECFLAVORS];	/* and the flavors */
  };
  
  /*
   * These are NO-OPS for BSD until Isilon upstreams EXITCODE support.
   * EXITCODE is an in-memory ring buffer that holds the routines failing status.
   * This is a valuable tool to use when debugging and analyzing issues.
   * In addition to recording a routine's failing status, it offers
   * logging of routines for call stack tracing.
   * EXITCODE should be used only in routines that return a true errno value, as
   * that value will be formatted to a displayable errno string.  Routines that 
   * return regular int status that are not true errno should not set EXITCODE.
   * If you want to log routine tracing, you can add EXITCODE(0) to any routine.
   * NFS extended the EXITCODE with EXITCODE2 to record either the routine's
   * exit errno status or the nd_repstat.
   */
  #define	NFSEXITCODE(error)
  #define	NFSEXITCODE2(error, nd)
  
  #define	NFSVNO_EXINIT(e)		((e)->nes_exflag = 0)
  #define	NFSVNO_EXPORTED(e)		((e)->nes_exflag & MNT_EXPORTED)
  #define	NFSVNO_EXRDONLY(e)		((e)->nes_exflag & MNT_EXRDONLY)
  #define	NFSVNO_EXPORTANON(e)		((e)->nes_exflag & MNT_EXPORTANON)
  #define	NFSVNO_EXSTRICTACCESS(e)	((e)->nes_exflag & MNT_EXSTRICTACCESS)
  #define	NFSVNO_EXV4ONLY(e)		((e)->nes_exflag & MNT_EXV4ONLY)
  
  #define	NFSVNO_SETEXRDONLY(e)	((e)->nes_exflag = (MNT_EXPORTED|MNT_EXRDONLY))
  
  #define	NFSVNO_CMPFH(f1, f2)						\
      ((f1)->fh_fsid.val[0] == (f2)->fh_fsid.val[0] &&			\
       (f1)->fh_fsid.val[1] == (f2)->fh_fsid.val[1] &&			\
       bcmp(&(f1)->fh_fid, &(f2)->fh_fid, sizeof(struct fid)) == 0)
  
  #define	NFSLOCKHASH(f) 							\
  	(&nfslockhash[nfsrv_hashfh(f) % NFSLOCKHASHSIZE])
  
  #define	NFSFPVNODE(f)	((struct vnode *)((f)->f_data))
  #define	NFSFPCRED(f)	((f)->f_cred)
  #define	NFSFPFLAG(f)	((f)->f_flag)
  
  int fp_getfvp(NFSPROC_T *, int, struct file **, struct vnode **);
  
  #define	NFSNAMEICNDSET(n, c, o, f)	do {				\
  	(n)->cn_cred = (c);						\
  	(n)->cn_nameiop = (o);						\
  	(n)->cn_flags = (f);						\
      } while (0)
  
  /*
   * A little bit of Darwin vfs kpi.
   */
  #define	vnode_mount(v)	((v)->v_mount)
  #define	vfs_statfs(m)	(&((m)->mnt_stat))
  
  #define	NFSPATHLEN_T	size_t
  
  /*
   * These are set to the minimum and maximum size of a server file
   * handle.
   */
  #define	NFSRV_MINFH	(sizeof (fhandle_t))
  #define	NFSRV_MAXFH	(sizeof (fhandle_t))
  
  