text: /*-
   * 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.
   * 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.
   *
   *	@(#)nfsm_subs.h	8.2 (Berkeley) 3/30/95
   * $FreeBSD: head/sys/nfsclient/nfsm_subs.h 248198 2013-03-12 12:23:47Z glebius $
   */
  
  #ifndef _NFSCLIENT_NFSM_SUBS_H_
  #define _NFSCLIENT_NFSM_SUBS_H_
  
  #include <nfs/nfs_common.h>
  
  #define	nfsv2tov_type(a)	nv2tov_type[fxdr_unsigned(u_int32_t,(a))&0x7]
  
  struct ucred;
  struct vnode;
  
  /*
   * These macros do strange and peculiar things to mbuf chains for
   * the assistance of the nfs code. To attempt to use them for any
   * other purpose will be dangerous. (they make weird assumptions)
   */
  
  /*
   * First define what the actual subs. return
   */
  u_int32_t nfs_xid_gen(void);
  
  /* *********************************** */
  /* Request generation phase macros */
  
  int	nfsm_fhtom_xx(struct vnode *v, int v3, struct mbuf **mb,
  	    caddr_t *bpos);
  void	nfsm_v3attrbuild_xx(struct vattr *va, int full, struct mbuf **mb,
  	    caddr_t *bpos);
  int	nfsm_strtom_xx(const char *a, int s, int m, struct mbuf **mb,
  	    caddr_t *bpos);
  
  #define nfsm_bcheck(t1, mreq) \
  do { \
  	if (t1) { \
  		error = t1; \
  		m_freem(mreq); \
  		goto nfsmout; \
  	} \
  } while (0)
  
  #define nfsm_fhtom(v, v3) \
  do { \
  	int32_t t1; \
  	t1 = nfsm_fhtom_xx((v), (v3), &mb, &bpos); \
  	nfsm_bcheck(t1, mreq); \
  } while (0)
  
  /* If full is true, set all fields, otherwise just set mode and time fields */
  #define nfsm_v3attrbuild(a, full) \
  	nfsm_v3attrbuild_xx(a, full, &mb, &bpos)
  
  #define nfsm_uiotom(p, s) \
  do { \
  	int t1; \
  	t1 = nfsm_uiotombuf((p), &mb, (s), &bpos); \
  	nfsm_bcheck(t1, mreq); \
  } while (0)
  
  #define	nfsm_strtom(a, s, m) \
  do { \
  	int t1; \
  	t1 = nfsm_strtom_xx((a), (s), (m), &mb, &bpos); \
  	nfsm_bcheck(t1, mreq); \
  } while (0)
  
  /* *********************************** */
  /* Send the request */
  
  #define	nfsm_request(v, t, p, c) \
  do { \
  	sigset_t oldset; \
  	nfs_set_sigmask(p, &oldset); \
  	error = nfs_request((v), mreq, (t), (p), (c), &mrep, &md, &dpos); \
  	nfs_restore_sigmask(p, &oldset); \
  	if (error != 0) { \
  		if (error & NFSERR_RETERR) \
  			error &= ~NFSERR_RETERR; \
  		else \
  			goto nfsmout; \
  	} \
  } while (0)
  
  /* *********************************** */
  /* Reply interpretation phase macros */
  
  int	nfsm_mtofh_xx(struct vnode *d, struct vnode **v, int v3, int *f,
  	    struct mbuf **md, caddr_t *dpos);
  int	nfsm_getfh_xx(nfsfh_t **f, int *s, int v3, struct mbuf **md,
  	    caddr_t *dpos);
  int	nfsm_loadattr_xx(struct vnode **v, struct vattr *va, struct mbuf **md,
  	    caddr_t *dpos);
  int	nfsm_postop_attr_xx(struct vnode **v, int *f, struct vattr *va,
  	    struct mbuf **md, caddr_t *dpos);
  int	nfsm_wcc_data_xx(struct vnode **v, int *f, struct mbuf **md,
  	    caddr_t *dpos);
  
  #define nfsm_mtofh(d, v, v3, f) \
  do { \
  	int32_t t1; \
  	t1 = nfsm_mtofh_xx((d), &(v), (v3), &(f), &md, &dpos); \
  	nfsm_dcheck(t1, mrep); \
  } while (0)
  
  #define nfsm_getfh(f, s, v3) \
  do { \
  	int32_t t1; \
  	t1 = nfsm_getfh_xx(&(f), &(s), (v3), &md, &dpos); \
  	nfsm_dcheck(t1, mrep); \
  } while (0)
  
  #define	nfsm_loadattr(v, a) \
  do { \
  	int32_t t1; \
  	t1 = nfsm_loadattr_xx(&v, a, &md, &dpos); \
  	nfsm_dcheck(t1, mrep); \
  } while (0)
  
  #define	nfsm_postop_attr(v, f) \
  do { \
  	int32_t t1; \
  	t1 = nfsm_postop_attr_xx(&v, &f, NULL, &md, &dpos);	\
  	nfsm_dcheck(t1, mrep); \
  } while (0)
  
  #define	nfsm_postop_attr_va(v, f, va)		\
  do { \
  	int32_t t1; \
  	t1 = nfsm_postop_attr_xx(&v, &f, va, &md, &dpos);	\
  	nfsm_dcheck(t1, mrep); \
  } while (0)
  
  /* Used as (f) for nfsm_wcc_data() */
  #define NFSV3_WCCRATTR	0
  #define NFSV3_WCCCHK	1
  
  #define	nfsm_wcc_data(v, f) \
  do { \
  	int32_t t1; \
  	t1 = nfsm_wcc_data_xx(&v, &f, &md, &dpos); \
  	nfsm_dcheck(t1, mrep); \
  } while (0)
  
  #endif
  