c057a37818
This patch adds support for NFSv4.2 (RFC-7862) and Extended Attributes
(RFC-8276) to the NFS client and server.
NFSv4.2 is comprised of several optional features that can be supported
in addition to NFSv4.1. This patch adds the following optional features:
- posix_fadvise(POSIX_FADV_WILLNEED/POSIX_FADV_DONTNEED)
- posix_fallocate()
- intra server file range copying via the copy_file_range(2) syscall
--> Avoiding data tranfer over the wire to/from the NFS client.
- lseek(SEEK_DATA/SEEK_HOLE)
- Extended attribute syscalls for "user" namespace attributes as defined
by RFC-8276.
Although this patch is fairly large, it should not affect support for
the other versions of NFS. However it does add two new sysctls that allow
a sysadmin to limit which minor versions of NFSv4 a server supports, allowing
a sysadmin to disable NFSv4.2.
Unfortunately, when the NFS stats structure was last revised, it was assumed
that there would be no additional operations added beyond what was
specified in RFC-7862. However RFC-8276 did add additional operations,
forcing the NFS stats structure to revised again. It now has extra unused
entries in all arrays, so that future extensions to NFSv4.2 can be
accomodated without revising this structure again.
A future commit will update nfsstat(1) to report counts for the new NFSv4.2
specific operations/procedures.
This patch affects the internal interface between the nfscommon, nfscl and
nfsd modules and, as such, they all must be upgraded simultaneously.
I will do a version bump (although arguably not needed), due to this.
This code has survived a "make universe" but has not been built with a
recent GCC. If you encounter build problems, please email me.
Relnotes: yes
138 lines
5.3 KiB
C
138 lines
5.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993
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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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* $FreeBSD$
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*/
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#ifndef _NFSCLIENT_NFSMOUNT_H_
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#define _NFSCLIENT_NFSMOUNT_H_
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#include <nfs/nfs_mountcommon.h>
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/*
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* Mount structure.
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* One allocated on every NFS mount.
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* Holds NFS specific information for mount.
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*/
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struct nfsmount {
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struct nfsmount_common nm_com; /* Common fields for nlm */
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uint32_t nm_privflag; /* Private flags */
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int nm_numgrps; /* Max. size of groupslist */
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u_char nm_fh[NFSX_FHMAX]; /* File handle of root dir */
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int nm_fhsize; /* Size of root file handle */
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struct nfssockreq nm_sockreq; /* Socket Info */
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int nm_timeouts; /* Request timeouts */
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int nm_rsize; /* Max size of read rpc */
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int nm_wsize; /* Max size of write rpc */
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int nm_readdirsize; /* Size of a readdir rpc */
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int nm_readahead; /* Num. of blocks to readahead */
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int nm_wcommitsize; /* Max size of commit for write */
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int nm_acdirmin; /* Directory attr cache min lifetime */
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int nm_acdirmax; /* Directory attr cache max lifetime */
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int nm_acregmin; /* Reg file attr cache min lifetime */
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int nm_acregmax; /* Reg file attr cache max lifetime */
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u_char nm_verf[NFSX_VERF]; /* write verifier */
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TAILQ_HEAD(, buf) nm_bufq; /* async io buffer queue */
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short nm_bufqlen; /* number of buffers in queue */
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short nm_bufqwant; /* process wants to add to the queue */
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int nm_bufqiods; /* number of iods processing queue */
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u_int64_t nm_maxfilesize; /* maximum file size */
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int nm_tprintf_initial_delay; /* initial delay */
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int nm_tprintf_delay; /* interval for messages */
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int nm_nametimeo; /* timeout for +ve entries (sec) */
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int nm_negnametimeo; /* timeout for -ve entries (sec) */
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/* Newnfs additions */
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TAILQ_HEAD(, nfsclds) nm_sess; /* Session(s) for NFSv4.1. */
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struct nfsclclient *nm_clp;
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uid_t nm_uid; /* Uid for SetClientID etc. */
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u_int64_t nm_clval; /* identifies which clientid */
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u_int64_t nm_fsid[2]; /* NFSv4 fsid */
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int nm_minorvers; /* Minor version # for NFSv4 */
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u_int16_t nm_krbnamelen; /* Krb5 host principal, if any */
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u_int16_t nm_dirpathlen; /* and mount dirpath, for V4 */
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u_int16_t nm_srvkrbnamelen; /* and the server's target name */
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u_char nm_name[1]; /* malloc'd actual len of krbname + dirpath */
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};
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#define nm_nam nm_sockreq.nr_nam
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#define nm_sotype nm_sockreq.nr_sotype
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#define nm_so nm_sockreq.nr_so
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#define nm_soflags nm_sockreq.nr_soflags
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#define nm_soproto nm_sockreq.nr_soproto
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#define nm_client nm_sockreq.nr_client
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#define nm_krbname nm_name
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#define nm_mtx nm_com.nmcom_mtx
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#define nm_flag nm_com.nmcom_flag
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#define nm_state nm_com.nmcom_state
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#define nm_mountp nm_com.nmcom_mountp
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#define nm_timeo nm_com.nmcom_timeo
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#define nm_retry nm_com.nmcom_retry
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#define nm_hostname nm_com.nmcom_hostname
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#define nm_getinfo nm_com.nmcom_getinfo
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#define nm_vinvalbuf nm_com.nmcom_vinvalbuf
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/* Private flags. */
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#define NFSMNTP_FORCEDISM 0x00000001
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#define NFSMNTP_CANCELRPCS 0x00000002
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#define NFSMNTP_IOADVISETHRUMDS 0x00000004
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#define NFSMNTP_NOCOPY 0x00000008
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#define NFSMNTP_NOCONSECUTIVE 0x00000010
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#define NFSMNTP_SEEK 0x00000020
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#define NFSMNTP_SEEKTESTED 0x00000040
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#define NFSMNTP_NOXATTR 0x00000080
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#define NFSMNTP_NOADVISE 0x00000100
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#define NFSMNTP_NOALLOCATE 0x00000200
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#define NFSMNT_DIRPATH(m) (&((m)->nm_name[(m)->nm_krbnamelen + 1]))
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#define NFSMNT_SRVKRBNAME(m) \
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(&((m)->nm_name[(m)->nm_krbnamelen + (m)->nm_dirpathlen + 2]))
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#if defined(_KERNEL)
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/*
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* Convert mount ptr to nfsmount ptr.
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*/
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#define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data))
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#ifndef NFS_DEFAULT_NAMETIMEO
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#define NFS_DEFAULT_NAMETIMEO 60
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#endif
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#ifndef NFS_DEFAULT_NEGNAMETIMEO
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#define NFS_DEFAULT_NEGNAMETIMEO 60
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#endif
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#endif /* _KERNEL */
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#endif /* _NFSCLIENT_NFSMOUNT_H_ */
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