The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/fs/nfsclient/nfsmount.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1989, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * This code is derived from software contributed to Berkeley by
    8  * Rick Macklem at The University of Guelph.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. Neither the name of the University nor the names of its contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  * $FreeBSD$
   35  */
   36 
   37 #ifndef _NFSCLIENT_NFSMOUNT_H_
   38 #define _NFSCLIENT_NFSMOUNT_H_
   39 
   40 #include <nfs/nfs_mountcommon.h>
   41 
   42 /*
   43  * Mount structure.
   44  * One allocated on every NFS mount.
   45  * Holds NFS specific information for mount.
   46  */
   47 struct  nfsmount {
   48         struct  nfsmount_common nm_com; /* Common fields for nlm */
   49         uint32_t nm_privflag;           /* Private flags */
   50         int     nm_numgrps;             /* Max. size of groupslist */
   51         u_char  nm_fh[NFSX_FHMAX];      /* File handle of root dir */
   52         int     nm_fhsize;              /* Size of root file handle */
   53         struct  nfssockreq nm_sockreq;  /* Socket Info */
   54         int     nm_timeouts;            /* Request timeouts */
   55         int     nm_rsize;               /* Max size of read rpc */
   56         int     nm_wsize;               /* Max size of write rpc */
   57         int     nm_readdirsize;         /* Size of a readdir rpc */
   58         int     nm_readahead;           /* Num. of blocks to readahead */
   59         int     nm_wcommitsize;         /* Max size of commit for write */
   60         int     nm_acdirmin;            /* Directory attr cache min lifetime */
   61         int     nm_acdirmax;            /* Directory attr cache max lifetime */
   62         int     nm_acregmin;            /* Reg file attr cache min lifetime */
   63         int     nm_acregmax;            /* Reg file attr cache max lifetime */
   64         u_char  nm_verf[NFSX_VERF];     /* write verifier */
   65         TAILQ_HEAD(, buf) nm_bufq;      /* async io buffer queue */
   66         short   nm_bufqlen;             /* number of buffers in queue */
   67         short   nm_bufqwant;            /* process wants to add to the queue */
   68         int     nm_bufqiods;            /* number of iods processing queue */
   69         u_int64_t nm_maxfilesize;       /* maximum file size */
   70         int     nm_tprintf_initial_delay; /* initial delay */
   71         int     nm_tprintf_delay;       /* interval for messages */
   72         int     nm_nametimeo;           /* timeout for +ve entries (sec) */
   73         int     nm_negnametimeo;        /* timeout for -ve entries (sec) */
   74 
   75         /* Newnfs additions */
   76         TAILQ_HEAD(, nfsclds) nm_sess;  /* Session(s) for NFSv4.1. */
   77         struct  nfsclclient *nm_clp;
   78         uid_t   nm_uid;                 /* Uid for SetClientID etc. */
   79         u_int64_t nm_clval;             /* identifies which clientid */
   80         u_int64_t nm_fsid[2];           /* NFSv4 fsid */
   81         int     nm_minorvers;           /* Minor version # for NFSv4 */
   82         u_int16_t nm_krbnamelen;        /* Krb5 host principal, if any */
   83         u_int16_t nm_dirpathlen;        /* and mount dirpath, for V4 */
   84         u_int16_t nm_srvkrbnamelen;     /* and the server's target name */
   85         u_char  nm_name[1];     /* malloc'd actual len of krbname + dirpath */
   86 };
   87 
   88 #define nm_nam          nm_sockreq.nr_nam
   89 #define nm_sotype       nm_sockreq.nr_sotype
   90 #define nm_so           nm_sockreq.nr_so
   91 #define nm_soflags      nm_sockreq.nr_soflags
   92 #define nm_soproto      nm_sockreq.nr_soproto
   93 #define nm_client       nm_sockreq.nr_client
   94 #define nm_krbname      nm_name
   95 #define nm_mtx          nm_com.nmcom_mtx
   96 #define nm_flag         nm_com.nmcom_flag
   97 #define nm_state        nm_com.nmcom_state
   98 #define nm_mountp       nm_com.nmcom_mountp
   99 #define nm_timeo        nm_com.nmcom_timeo
  100 #define nm_retry        nm_com.nmcom_retry
  101 #define nm_hostname     nm_com.nmcom_hostname
  102 #define nm_getinfo      nm_com.nmcom_getinfo
  103 #define nm_vinvalbuf    nm_com.nmcom_vinvalbuf
  104 
  105 /* Private flags. */
  106 #define NFSMNTP_FORCEDISM       0x00000001
  107 #define NFSMNTP_CANCELRPCS      0x00000002
  108 
  109 #define NFSMNT_DIRPATH(m)       (&((m)->nm_name[(m)->nm_krbnamelen + 1]))
  110 #define NFSMNT_SRVKRBNAME(m)                                            \
  111         (&((m)->nm_name[(m)->nm_krbnamelen + (m)->nm_dirpathlen + 2]))
  112 
  113 #if defined(_KERNEL)
  114 /*
  115  * Convert mount ptr to nfsmount ptr.
  116  */
  117 #define VFSTONFS(mp)    ((struct nfsmount *)((mp)->mnt_data))
  118 
  119 #ifndef NFS_DEFAULT_NAMETIMEO
  120 #define NFS_DEFAULT_NAMETIMEO           60
  121 #endif
  122 
  123 #ifndef NFS_DEFAULT_NEGNAMETIMEO
  124 #define NFS_DEFAULT_NEGNAMETIMEO        60
  125 #endif
  126 
  127 #endif  /* _KERNEL */
  128 
  129 #endif  /* _NFSCLIENT_NFSMOUNT_H_ */

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