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

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * 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.
     *
     * $FreeBSD$
     */
    
    /*
     * 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)                                            \
        (fsidcmp(&(f1)->fh_fsid, &(f2)->fh_fsid) == 0 &&                    \
         bcmp(&(f1)->fh_fid, &(f2)->fh_fid, sizeof(struct fid)) == 0)
    
    #define NFSLOCKHASH(f)                                                  \
            (&nfslockhash[nfsrv_hashfh(f) % nfsrv_lockhashsize])
    
    #define NFSFPVNODE(f)   ((struct vnode *)((f)->f_data))
    #define NFSFPCRED(f)    ((f)->f_cred)
    #define NFSFPFLAG(f)    ((f)->f_flag)
    
    #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))
   
   /* Use this macro for debug printfs. */
   #define NFSD_DEBUG(level, ...)  do {                                    \
                   if (nfsd_debuglevel >= (level))                         \
                           printf(__VA_ARGS__);                            \
           } while (0)
   

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