freebsd-dev/sys/fs/nfsclient/nfsmount.h
Rick Macklem 08b9cc316a nfscl: Add a VOP_DEALLOCATE() for the NFSv4.2 client
This patch adds a VOP_DEALLOCATE() to the NFS client.
For NFSv4.2 servers that support the Deallocate operation,
it is used. Otherwise, it falls back on calling
vop_stddeallocate().

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D31640
2021-08-27 18:31:36 -07:00

153 lines
5.9 KiB
C

/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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.
* 3. 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.
*
* $FreeBSD$
*/
#ifndef _NFSCLIENT_NFSMOUNT_H_
#define _NFSCLIENT_NFSMOUNT_H_
#include <nfs/nfs_mountcommon.h>
/* Maximum value for nm_nconnect. */
#define NFS_MAXNCONN 16
/*
* Mount structure.
* One allocated on every NFS mount.
* Holds NFS specific information for mount.
*/
struct nfsmount {
struct nfsmount_common nm_com; /* Common fields for nlm */
uint32_t nm_privflag; /* Private flags */
uint32_t nm_newflag; /* New mount flags */
int nm_numgrps; /* Max. size of groupslist */
u_char nm_fh[NFSX_FHMAX]; /* File handle of root dir */
int nm_fhsize; /* Size of root file handle */
struct nfssockreq nm_sockreq; /* Socket Info */
int nm_timeouts; /* Request timeouts */
int nm_rsize; /* Max size of read rpc */
int nm_wsize; /* Max size of write rpc */
int nm_readdirsize; /* Size of a readdir rpc */
int nm_readahead; /* Num. of blocks to readahead */
int nm_wcommitsize; /* Max size of commit for write */
int nm_acdirmin; /* Directory attr cache min lifetime */
int nm_acdirmax; /* Directory attr cache max lifetime */
int nm_acregmin; /* Reg file attr cache min lifetime */
int nm_acregmax; /* Reg file attr cache max lifetime */
u_char nm_verf[NFSX_VERF]; /* write verifier */
TAILQ_HEAD(, buf) nm_bufq; /* async io buffer queue */
short nm_bufqlen; /* number of buffers in queue */
short nm_bufqwant; /* process wants to add to the queue */
int nm_bufqiods; /* number of iods processing queue */
u_int64_t nm_maxfilesize; /* maximum file size */
int nm_tprintf_initial_delay; /* initial delay */
int nm_tprintf_delay; /* interval for messages */
int nm_nametimeo; /* timeout for +ve entries (sec) */
int nm_negnametimeo; /* timeout for -ve entries (sec) */
/* Newnfs additions */
TAILQ_HEAD(, nfsclds) nm_sess; /* Session(s) for NFSv4.1. */
struct nfsclclient *nm_clp;
char *nm_tlscertname; /* TLS certificate file name */
uid_t nm_uid; /* Uid for SetClientID etc. */
u_int64_t nm_clval; /* identifies which clientid */
u_int64_t nm_fsid[2]; /* NFSv4 fsid */
int nm_minorvers; /* Minor version # for NFSv4 */
u_int nm_aconnect; /* additional TCP connections */
u_int nm_nextaconn; /* Next nm_aconn[] to use */
/* unclipped, wraps to 0 */
struct __rpc_client *nm_aconn[NFS_MAXNCONN - 1]; /* Additional nconn */
/* Locked via nm_sockreq.nr_mtx */
u_int16_t nm_krbnamelen; /* Krb5 host principal, if any */
u_int16_t nm_dirpathlen; /* and mount dirpath, for V4 */
u_int16_t nm_srvkrbnamelen; /* and the server's target name */
u_char nm_name[1]; /* malloc'd actual len of krbname + dirpath */
};
#define nm_nam nm_sockreq.nr_nam
#define nm_sotype nm_sockreq.nr_sotype
#define nm_so nm_sockreq.nr_so
#define nm_soflags nm_sockreq.nr_soflags
#define nm_soproto nm_sockreq.nr_soproto
#define nm_client nm_sockreq.nr_client
#define nm_krbname nm_name
#define nm_mtx nm_com.nmcom_mtx
#define nm_flag nm_com.nmcom_flag
#define nm_state nm_com.nmcom_state
#define nm_mountp nm_com.nmcom_mountp
#define nm_timeo nm_com.nmcom_timeo
#define nm_retry nm_com.nmcom_retry
#define nm_hostname nm_com.nmcom_hostname
#define nm_getinfo nm_com.nmcom_getinfo
#define nm_vinvalbuf nm_com.nmcom_vinvalbuf
/* Private flags. */
#define NFSMNTP_FORCEDISM 0x00000001
#define NFSMNTP_CANCELRPCS 0x00000002
#define NFSMNTP_IOADVISETHRUMDS 0x00000004
#define NFSMNTP_NOCOPY 0x00000008
#define NFSMNTP_NOCONSECUTIVE 0x00000010
#define NFSMNTP_SEEK 0x00000020
#define NFSMNTP_SEEKTESTED 0x00000040
#define NFSMNTP_NOXATTR 0x00000080
#define NFSMNTP_NOADVISE 0x00000100
#define NFSMNTP_NOALLOCATE 0x00000200
#define NFSMNTP_DELEGISSUED 0x00000400
#define NFSMNTP_NODEALLOCATE 0x00000800
/* New mount flags only used by the kernel via nmount(2). */
#define NFSMNT_TLS 0x00000001
#define NFSMNT_DIRPATH(m) (&((m)->nm_name[(m)->nm_krbnamelen + 1]))
#define NFSMNT_SRVKRBNAME(m) \
(&((m)->nm_name[(m)->nm_krbnamelen + (m)->nm_dirpathlen + 2]))
#if defined(_KERNEL)
/*
* Convert mount ptr to nfsmount ptr.
*/
#define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data))
#ifndef NFS_DEFAULT_NAMETIMEO
#define NFS_DEFAULT_NAMETIMEO 60
#endif
#ifndef NFS_DEFAULT_NEGNAMETIMEO
#define NFS_DEFAULT_NEGNAMETIMEO 60
#endif
#endif /* _KERNEL */
#endif /* _NFSCLIENT_NFSMOUNT_H_ */