612 lines
19 KiB
C
612 lines
19 KiB
C
/* $NetBSD: nfs.h,v 1.74 2014/04/24 18:43:02 christos Exp $ */
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/*
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* Copyright (c) 1989, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfs.h 8.4 (Berkeley) 5/1/95
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*/
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#ifndef _NFS_NFS_H_
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#define _NFS_NFS_H_
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#ifdef _KERNEL
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#include <sys/condvar.h>
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#include <sys/fstypes.h>
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#include <sys/mbuf.h>
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#include <sys/mutex.h>
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#endif
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/*
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* Tunable constants for nfs
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*/
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#define NFS_MAXIOVEC 34
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#define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */
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#define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */
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#define NFS_TIMEO (3 * NFS_HZ) /* Default timeout = 3 seconds */
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#define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */
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#define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */
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#define NFS_MINIDEMTIMEO (5 * NFS_HZ) /* Min timeout for non-idempotent ops*/
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#define NFS_MAXREXMIT 100 /* Stop counting after this many */
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#define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */
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#define NFS_RETRANS 10 /* Num of retrans for soft mounts */
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#define NFS_MAXGRPS 16 /* Max. size of groups list */
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#ifndef NFS_MINATTRTIMO
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#define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */
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#endif
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#ifndef NFS_MAXATTRTIMO
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#define NFS_MAXATTRTIMO 60
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#endif
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#define NFS_TRYLATERDEL 1 /* Initial try later delay (sec) */
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#define NFS_TRYLATERDELMAX (1*60) /* Maximum try later delay (sec) */
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#define NFS_TRYLATERDELMUL 2 /* Exponential backoff multiplier */
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#define NFS_CWNDSCALE 256
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#define NFS_MAXCWND (NFS_CWNDSCALE * 32)
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/*
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* These can be overridden through <machine/param.h>, included via
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* <sys/param.h>. This means that <sys/param.h> should always be
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* included before this file.
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*/
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#ifndef NFS_WSIZE
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#define NFS_WSIZE 8192 /* Def. write data size */
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#endif
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#ifndef NFS_RSIZE
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#define NFS_RSIZE 8192 /* Def. read data size */
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#endif
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#ifndef NFS_READDIRSIZE
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#define NFS_READDIRSIZE 8192 /* Def. readdir size */
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#endif
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/*
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* NFS client IO daemon threads. May be overridden by config options.
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*/
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#ifndef NFS_MAXASYNCDAEMON
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#define NFS_MAXASYNCDAEMON 128 /* Max. number async_daemons runable */
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#endif
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/*
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* NFS client read-ahead. May be overridden by config options.
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* Should be no more than NFS_MAXASYNCDAEMON as each read-ahead operation
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* requires one IO thread.
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*/
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#ifndef NFS_MAXRAHEAD
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#define NFS_MAXRAHEAD 32 /* Max. read ahead # blocks */
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#endif
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#define NFS_DEFRAHEAD 2 /* Def. read ahead # blocks */
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#define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */
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#define NFS_DEFDEADTHRESH NFS_NEVERDEAD /* Default nm_deadthresh */
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#define NFS_NEVERDEAD 9 /* Greater than max. nm_timeouts */
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#ifdef _KERNEL
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extern int nfs_niothreads; /* Number of async_daemons desired */
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#ifndef NFS_DEFAULT_NIOTHREADS
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#define NFS_DEFAULT_NIOTHREADS 4
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#endif
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#endif
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#define NFS_MAXGATHERDELAY 100 /* Max. write gather delay (msec) */
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#ifndef NFS_GATHERDELAY
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#define NFS_GATHERDELAY 10 /* Default write gather delay (msec) */
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#endif
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/*
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* NFS_DIRBLKSIZ is the size of buffers in the buffer cache used for
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* NFS directory vnodes. NFS_DIRFRAGSIZ is the minimum aligned amount
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* of data in those buffers, and thus the minimum amount of data
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* that you can request. NFS_DIRFRAGSIZ should be no smaller than
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* DIRBLKSIZ.
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*/
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#define NFS_DIRBLKSIZ 8192 /* Must be a multiple of DIRBLKSIZ */
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#define NFS_DIRFRAGSIZ 512 /* Same as DIRBLKSIZ, generally */
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/*
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* Maximum number of directory entries cached per NFS node, to avoid
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* having this grow without bounds on very large directories. The
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* minimum size to get reasonable performance for emulated binaries
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* is the maximum number of entries that fits in NFS_DIRBLKSIZ.
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* For NFS_DIRBLKSIZ = 512, this would be 512 / 14 = 36.
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*/
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#define NFS_MAXDIRCACHE (NFS_DIRBLKSIZ / 14)
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/*
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* Oddballs
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*/
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#define NFS_CMPFH(n, f, s) \
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((n)->n_fhsize == (s) && !memcmp((void *)(n)->n_fhp, (void *)(f), (s)))
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#ifdef NFS_V2_ONLY
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#define NFS_ISV3(v) (0)
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#else
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#define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3)
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#endif
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#define NFS_SRVMAXDATA(n) \
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(((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \
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NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA)
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/*
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* Use the vm_page flag reserved for pager use to indicate pages
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* which have been written to the server but not yet committed.
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*/
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#define PG_NEEDCOMMIT PG_PAGER1
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/*
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* The IO_METASYNC flag should be implemented for local file systems.
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* (Until then, it is nothin at all.)
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*/
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#ifndef IO_METASYNC
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#define IO_METASYNC 0
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#endif
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/*
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* Export arguments for local filesystem mount calls.
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* Keep in mind that changing this structure modifies nfssvc(2)'s ABI (see
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* 'struct mountd_exports_list' below).
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* When modifying this structure, take care to also edit the
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* nfs_update_exports_30 function in nfs_export.c accordingly to convert
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* export_args to export_args30.
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*/
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struct export_args {
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int ex_flags; /* export related flags */
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uid_t ex_root; /* mapping for root uid */
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struct uucred ex_anon; /* mapping for anonymous user */
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struct sockaddr *ex_addr; /* net address to which exported */
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int ex_addrlen; /* and the net address length */
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struct sockaddr *ex_mask; /* mask of valid bits in saddr */
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int ex_masklen; /* and the smask length */
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char *ex_indexfile; /* index file for WebNFS URLs */
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};
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/*
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* Structures for the nfssvc(2) syscall. Not that anyone but mountd, nfsd and
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* mount_nfs should ever try and use it.
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*/
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struct nfsd_args {
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int sock; /* Socket to serve */
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void * name; /* Client addr for connection based sockets */
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int namelen; /* Length of name */
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};
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struct nfsd_srvargs {
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struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */
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uid_t nsd_uid; /* Effective uid mapped to cred */
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u_int32_t nsd_haddr; /* Ip address of client */
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struct uucred nsd_cr; /* Cred. uid maps to */
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int nsd_authlen; /* Length of auth string (ret) */
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u_char *nsd_authstr; /* Auth string (ret) */
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int nsd_verflen; /* and the verfier */
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u_char *nsd_verfstr;
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struct timeval nsd_timestamp; /* timestamp from verifier */
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u_int32_t nsd_ttl; /* credential ttl (sec) */
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NFSKERBKEY_T nsd_key; /* Session key */
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};
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struct nfsd_cargs {
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char *ncd_dirp; /* Mount dir path */
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uid_t ncd_authuid; /* Effective uid */
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int ncd_authtype; /* Type of authenticator */
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u_int ncd_authlen; /* Length of authenticator string */
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u_char *ncd_authstr; /* Authenticator string */
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u_int ncd_verflen; /* and the verifier */
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u_char *ncd_verfstr;
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NFSKERBKEY_T ncd_key; /* Session key */
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};
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struct mountd_exports_list {
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const char *mel_path;
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size_t mel_nexports;
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struct export_args *mel_exports;
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};
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/*
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* try to keep nfsstats, which is exposed to userland via sysctl,
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* compatible after NQNFS removal.
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* 26 is the old value of NFS_NPROCS, which includes NQNFS procedures.
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*/
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#define NFSSTATS_NPROCS 26
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/*
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* Stats structure
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*/
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struct nfsstats {
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uint32_t attrcache_hits;
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uint32_t attrcache_misses;
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uint32_t lookupcache_hits;
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uint32_t lookupcache_misses;
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uint32_t direofcache_hits;
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uint32_t direofcache_misses;
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uint32_t biocache_reads;
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uint32_t read_bios;
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uint32_t read_physios;
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uint32_t biocache_writes;
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uint32_t write_bios;
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uint32_t write_physios;
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uint32_t biocache_readlinks;
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uint32_t readlink_bios;
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uint32_t biocache_readdirs;
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uint32_t readdir_bios;
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uint32_t rpccnt[NFSSTATS_NPROCS];
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uint32_t rpcretries;
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uint32_t srvrpccnt[NFSSTATS_NPROCS];
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uint32_t srvrpc_errs;
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uint32_t srv_errs;
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uint32_t rpcrequests;
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uint32_t rpctimeouts;
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uint32_t rpcunexpected;
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uint32_t rpcinvalid;
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uint32_t srvcache_inproghits;
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uint32_t srvcache_idemdonehits;
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uint32_t srvcache_nonidemdonehits;
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uint32_t srvcache_misses;
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uint32_t __srvnqnfs_leases; /* unused */
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uint32_t __srvnqnfs_maxleases; /* unused */
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uint32_t __srvnqnfs_getleases; /* unused */
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uint32_t srvvop_writes;
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};
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/*
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* Flags for nfssvc() system call.
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*/
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#define NFSSVC_BIOD 0x002
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#define NFSSVC_NFSD 0x004
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#define NFSSVC_ADDSOCK 0x008
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#define NFSSVC_AUTHIN 0x010
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#define NFSSVC_GOTAUTH 0x040
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#define NFSSVC_AUTHINFAIL 0x080
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#define NFSSVC_MNTD 0x100
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#define NFSSVC_SETEXPORTSLIST 0x200
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/*
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* fs.nfs sysctl(3) identifiers
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*/
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#define NFS_NFSSTATS 1 /* struct: struct nfsstats */
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#define NFS_IOTHREADS 2 /* number of io threads */
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#define NFS_MAXID 3
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#define NFS_NAMES { \
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{ 0, 0 }, \
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{ "nfsstats", CTLTYPE_STRUCT }, \
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{ "iothreads", CTLTYPE_INT }, \
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}
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/*
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* The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
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* What should be in this set is open to debate, but I believe that since
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* I/O system calls on ufs are never interrupted by signals the set should
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* be minimal. My reasoning is that many current programs that use signals
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* such as SIGALRM will not expect file I/O system calls to be interrupted
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* by them and break.
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*/
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#ifdef _KERNEL
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struct uio; struct buf; struct vattr; struct nameidata; /* XXX */
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/*
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* Socket errors ignored for connectionless sockets??
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* For now, ignore them all
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*/
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#define NFSIGNORE_SOERROR(s, e) \
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((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
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((s) & PR_CONNREQUIRED) == 0)
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/*
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* Nfs outstanding request list element
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*/
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struct nfsreq {
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TAILQ_ENTRY(nfsreq) r_chain;
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struct mbuf *r_mreq;
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struct mbuf *r_mrep;
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struct mbuf *r_md;
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void * r_dpos;
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struct nfsmount *r_nmp;
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u_int32_t r_xid;
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int r_flags; /* flags on request, see below */
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int r_retry; /* max retransmission count */
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int r_rexmit; /* current retrans count */
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u_int32_t r_procnum; /* NFS procedure number */
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int r_rtt; /* RTT for rpc */
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struct lwp *r_lwp; /* LWP that did I/O system call */
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};
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/*
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* Queue head for nfsreq's
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*/
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extern TAILQ_HEAD(nfsreqhead, nfsreq) nfs_reqq;
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/* Flag values for r_flags */
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#define R_TIMING 0x01 /* timing request (in mntp) */
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#define R_SENT 0x02 /* request has been sent */
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#define R_SOFTTERM 0x04 /* soft mnt, too many retries */
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#define R_INTR 0x08 /* intr mnt, signal pending */
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#define R_SOCKERR 0x10 /* Fatal error on socket */
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#define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */
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#define R_MUSTRESEND 0x40 /* Must resend request */
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#define R_REXMITTED 0x100 /* retransmitted after reconnect */
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/*
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* A list of nfssvc_sock structures is maintained with all the sockets
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* that require service by the nfsd.
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* The nfsuid structs hang off of the nfssvc_sock structs in both lru
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* and uid hash lists.
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*/
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#ifndef NFS_UIDHASHSIZ
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#define NFS_UIDHASHSIZ 29 /* Tune the size of nfssvc_sock with this */
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#endif
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#define NUIDHASH(sock, uid) \
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(&(sock)->ns_uidhashtbl[(uid) % NFS_UIDHASHSIZ])
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#ifndef NFS_WDELAYHASHSIZ
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#define NFS_WDELAYHASHSIZ 16 /* and with this */
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#endif
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#ifndef NFS_MUIDHASHSIZ
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#define NFS_MUIDHASHSIZ 63 /* Tune the size of nfsmount with this */
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#endif
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#define NMUIDHASH(nmp, uid) \
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(&(nmp)->nm_uidhashtbl[(uid) % NFS_MUIDHASHSIZ])
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#ifndef NFS_DIRHASHSIZ
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#define NFS_DIRHASHSIZ 64
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#endif
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#define NFSDIRHASH(np, off) \
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(&np->n_dircache[(nfs_dirhash((off)) & nfsdirhashmask)])
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/*
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* Macros for storing/retrieving cookies into directory buffers.
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*/
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#define NFS_STASHCOOKIE(dp,off) \
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*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))) = off
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#define NFS_GETCOOKIE(dp) \
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(*((off_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t))))
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#define NFS_STASHCOOKIE32(dp, val) \
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*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \
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sizeof (int))) = val
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#define NFS_GETCOOKIE32(dp) \
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(*((u_int32_t *)((char *)(dp) + (dp)->d_reclen - sizeof (off_t) - \
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sizeof (int))))
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/*
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* Flags passed to nfs_bioread().
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*/
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#define NFSBIO_CACHECOOKIES 0x0001 /* Cache dir offset cookies */
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/*
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* Network address hash list element
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*/
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union nethostaddr {
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u_int32_t had_inetaddr;
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struct mbuf *had_nam;
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};
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struct nfsuid {
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TAILQ_ENTRY(nfsuid) nu_lru; /* LRU chain */
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LIST_ENTRY(nfsuid) nu_hash; /* Hash list */
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int nu_flag; /* Flags */
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union nethostaddr nu_haddr; /* Host addr. for dgram sockets */
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kauth_cred_t nu_cr; /* Cred uid mapped to */
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int nu_expire; /* Expiry time (sec) */
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struct timeval nu_timestamp; /* Kerb. timestamp */
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u_int32_t nu_nickname; /* Nickname on server */
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NFSKERBKEY_T nu_key; /* and session key */
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};
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#define nu_inetaddr nu_haddr.had_inetaddr
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#define nu_nam nu_haddr.had_nam
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/* Bits for nu_flag */
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#define NU_INETADDR 0x1
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#define NU_NAM 0x2
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#define NU_NETFAM(u) \
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(((u)->nu_flag & NU_INETADDR) ? AF_INET : AF_INET6)
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/*
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* b: protected by SLP_BUSY
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* g: protected by nfsd_lock
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* s: protected by ns_lock
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* a: protected by ns_alock
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*/
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struct nfssvc_sock {
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kmutex_t ns_lock;
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kmutex_t ns_alock;
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kcondvar_t ns_cv; /* s: */
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TAILQ_ENTRY(nfssvc_sock) ns_chain; /* g: List of all nfssvc_sock */
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TAILQ_ENTRY(nfssvc_sock) ns_pending; /* g: List of pending sockets */
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TAILQ_HEAD(, nfsuid) ns_uidlruhead;
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struct file *ns_fp;
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struct socket *ns_so;
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struct mbuf *ns_nam;
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struct mbuf *ns_raw; /* b: */
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struct mbuf *ns_rawend; /* b: */
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struct mbuf *ns_rec; /* b: */
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struct mbuf *ns_recend; /* b: */
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struct mbuf *ns_frag; /* b: */
|
|
int ns_flags; /* s: */
|
|
int ns_aflags; /* a: */
|
|
int ns_gflags; /* g: */
|
|
int ns_sflags; /* b: */
|
|
int ns_cc; /* b: */
|
|
int ns_reclen; /* b: */
|
|
int ns_numuids;
|
|
u_int32_t ns_sref; /* g: */
|
|
SIMPLEQ_HEAD(, nfsrv_descript) ns_sendq; /* s: send reply list */
|
|
LIST_HEAD(, nfsrv_descript) ns_tq; /* g: Write gather lists */
|
|
LIST_HEAD(, nfsuid) ns_uidhashtbl[NFS_UIDHASHSIZ];
|
|
LIST_HEAD(nfsrvw_delayhash, nfsrv_descript) ns_wdelayhashtbl[NFS_WDELAYHASHSIZ]; /* g: */
|
|
};
|
|
|
|
/* Bits for "ns_flags" */
|
|
#define SLP_VALID 0x01
|
|
#define SLP_BUSY 0x10
|
|
#define SLP_SENDING 0x80
|
|
|
|
/* Bits for "ns_aflags" */
|
|
#define SLP_A_NEEDQ 0x01
|
|
#define SLP_A_DISCONN 0x04
|
|
|
|
/* Bits for "ns_gflags" */
|
|
#define SLP_G_DOREC 0x02 /* on nfssvc_sockpending queue */
|
|
|
|
/* Bits for "ns_sflags" */
|
|
#define SLP_S_LASTFRAG 0x40
|
|
|
|
extern TAILQ_HEAD(nfssvc_sockhead, nfssvc_sock) nfssvc_sockhead;
|
|
extern struct nfssvc_sockhead nfssvc_sockpending;
|
|
extern int nfssvc_sockhead_flag;
|
|
#define SLP_INIT 0x01
|
|
|
|
/*
|
|
* One of these structures is allocated for each nfsd.
|
|
*/
|
|
struct nfsd {
|
|
TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */
|
|
SLIST_ENTRY(nfsd) nfsd_idle; /* List of idle nfsd's */
|
|
kcondvar_t nfsd_cv;
|
|
int nfsd_flag; /* NFSD_ flags */
|
|
struct nfssvc_sock *nfsd_slp; /* Current socket */
|
|
int nfsd_authlen; /* Authenticator len */
|
|
u_char nfsd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */
|
|
int nfsd_verflen; /* and the Verifier */
|
|
u_char nfsd_verfstr[RPCVERF_MAXSIZ];
|
|
struct proc *nfsd_procp; /* Proc ptr */
|
|
struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */
|
|
};
|
|
|
|
/* Bits for "nfsd_flag" */
|
|
#define NFSD_NEEDAUTH 0x04
|
|
#define NFSD_AUTHFAIL 0x08
|
|
|
|
#define NFSD_MAXFHSIZE 64
|
|
typedef struct nfsrvfh {
|
|
size_t nsfh_size;
|
|
union {
|
|
fhandle_t u_fh;
|
|
uint8_t u_opaque[NFSD_MAXFHSIZE];
|
|
} nsfh_u;
|
|
} nfsrvfh_t;
|
|
#define NFSRVFH_SIZE(nsfh) ((nsfh)->nsfh_size)
|
|
#define NFSRVFH_DATA(nsfh) ((nsfh)->nsfh_u.u_opaque)
|
|
#define NFSRVFH_FHANDLE(nsfh) (&(nsfh)->nsfh_u.u_fh)
|
|
|
|
/*
|
|
* This structure is used by the server for describing each request.
|
|
* Some fields are used only when write request gathering is performed.
|
|
*/
|
|
struct nfsrv_descript {
|
|
u_quad_t nd_time; /* Write deadline (usec) */
|
|
off_t nd_off; /* Start byte offset */
|
|
off_t nd_eoff; /* and end byte offset */
|
|
LIST_ENTRY(nfsrv_descript) nd_hash; /* Hash list */
|
|
LIST_ENTRY(nfsrv_descript) nd_tq; /* and timer list */
|
|
LIST_HEAD(,nfsrv_descript) nd_coalesce; /* coalesced writes */
|
|
SIMPLEQ_ENTRY(nfsrv_descript) nd_sendq; /* send reply list */
|
|
struct mbuf *nd_mrep; /* Request mbuf list */
|
|
struct mbuf *nd_md; /* Current dissect mbuf */
|
|
struct mbuf *nd_mreq; /* Reply mbuf list */
|
|
struct mbuf *nd_nam; /* and socket addr */
|
|
struct mbuf *nd_nam2; /* return socket addr */
|
|
void * nd_dpos; /* Current dissect pos */
|
|
u_int32_t nd_procnum; /* RPC # */
|
|
int nd_stable; /* storage type */
|
|
int nd_flag; /* nd_flag */
|
|
int nd_len; /* Length of this write */
|
|
int nd_repstat; /* Reply status */
|
|
u_int32_t nd_retxid; /* Reply xid */
|
|
u_int32_t nd_duration; /* Lease duration */
|
|
struct timeval nd_starttime; /* Time RPC initiated */
|
|
nfsrvfh_t nd_fh; /* File handle */
|
|
kauth_cred_t nd_cr; /* Credentials */
|
|
};
|
|
|
|
/* Bits for "nd_flag" */
|
|
#define ND_READ LEASE_READ
|
|
#define ND_WRITE LEASE_WRITE
|
|
#define ND_CHECK 0x04
|
|
#define ND_LEASE (ND_READ | ND_WRITE | ND_CHECK)
|
|
#define ND_NFSV3 0x08
|
|
#define ND_KERBNICK 0x20
|
|
#define ND_KERBFULL 0x40
|
|
#define ND_KERBAUTH (ND_KERBNICK | ND_KERBFULL)
|
|
|
|
extern kmutex_t nfsd_lock;
|
|
extern kcondvar_t nfsd_initcv;
|
|
extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head;
|
|
extern SLIST_HEAD(nfsdidlehead, nfsd) nfsd_idle_head;
|
|
extern int nfsd_head_flag;
|
|
#define NFSD_CHECKSLP 0x01
|
|
|
|
extern struct mowner nfs_mowner;
|
|
extern struct nfsstats nfsstats;
|
|
extern int nfs_numasync;
|
|
|
|
/*
|
|
* These macros compare nfsrv_descript structures.
|
|
*/
|
|
#define NFSW_CONTIG(o, n) \
|
|
((o)->nd_eoff >= (n)->nd_off && \
|
|
!memcmp((void *)&(o)->nd_fh, (void *)&(n)->nd_fh, NFSX_V3FH))
|
|
|
|
/*
|
|
* Defines for WebNFS
|
|
*/
|
|
|
|
#define WEBNFS_ESC_CHAR '%'
|
|
#define WEBNFS_SPECCHAR_START 0x80
|
|
|
|
#define WEBNFS_NATIVE_CHAR 0x80
|
|
/*
|
|
* ..
|
|
* Possibly more here in the future.
|
|
*/
|
|
|
|
/*
|
|
* Macro for converting escape characters in WebNFS pathnames.
|
|
* Should really be in libkern.
|
|
*/
|
|
|
|
#define HEXTOC(c) \
|
|
((c) >= 'a' ? ((c) - ('a' - 10)) : \
|
|
((c) >= 'A' ? ((c) - ('A' - 10)) : ((c) - '0')))
|
|
#define HEXSTRTOI(p) \
|
|
((HEXTOC(p[0]) << 4) + HEXTOC(p[1]))
|
|
|
|
/*
|
|
* Structure holding information for a publicly exported filesystem
|
|
* (WebNFS). Currently the specs allow just for one such filesystem.
|
|
*/
|
|
struct nfs_public {
|
|
int np_valid; /* Do we hold valid information */
|
|
fhandle_t *np_handle; /* Filehandle for pub fs (internal) */
|
|
struct mount *np_mount; /* Mountpoint of exported fs */
|
|
char *np_index; /* Index file */
|
|
};
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _NFS_NFS_H */
|