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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

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

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 1989, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * Rick Macklem at The University of Guelph.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 4. Neither the name of the University nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/11.0/sys/fs/nfsclient/nfsnode.h 303909 2016-08-10 12:53:30Z kib $
   33  */
   34 
   35 #ifndef _NFSCLIENT_NFSNODE_H_
   36 #define _NFSCLIENT_NFSNODE_H_
   37 
   38 #include <sys/_task.h>
   39 
   40 /*
   41  * Silly rename structure that hangs off the nfsnode until the name
   42  * can be removed by nfs_inactive()
   43  */
   44 struct sillyrename {
   45         struct  task s_task;
   46         struct  ucred *s_cred;
   47         struct  vnode *s_dvp;
   48         long    s_namlen;
   49         char    s_name[32];
   50 };
   51 
   52 /*
   53  * This structure is used to save the logical directory offset to
   54  * NFS cookie mappings.
   55  * The mappings are stored in a list headed
   56  * by n_cookies, as required.
   57  * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information
   58  * stored in increasing logical offset byte order.
   59  */
   60 #define NFSNUMCOOKIES           31
   61 
   62 struct nfsdmap {
   63         LIST_ENTRY(nfsdmap)     ndm_list;
   64         int                     ndm_eocookie;
   65         union {
   66                 nfsuint64       ndmu3_cookies[NFSNUMCOOKIES];
   67                 uint64_t        ndmu4_cookies[NFSNUMCOOKIES];
   68         } ndm_un1;
   69 };
   70 
   71 #define ndm_cookies     ndm_un1.ndmu3_cookies
   72 #define ndm4_cookies    ndm_un1.ndmu4_cookies
   73 
   74 struct nfs_accesscache {
   75         u_int32_t               mode;   /* ACCESS mode cache */
   76         uid_t                   uid;    /* credentials having mode */
   77         time_t                  stamp;  /* mode cache timestamp */
   78 };
   79 
   80 /*
   81  * The nfsnode is the nfs equivalent to ufs's inode. Any similarity
   82  * is purely coincidental.
   83  * There is a unique nfsnode allocated for each active file,
   84  * each current directory, each mounted-on file, text file, and the root.
   85  * An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
   86  * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite
   87  * type definitions), file handles of > 32 bytes should probably be split out
   88  * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by
   89  * changing the definition in nfsproto.h of NFS_SMALLFH.)
   90  * NB: Hopefully the current order of the fields is such that everything will
   91  *     be well aligned and, therefore, tightly packed.
   92  */
   93 struct nfsnode {
   94         struct mtx              n_mtx;          /* Protects all of these members */
   95         u_quad_t                n_size;         /* Current size of file */
   96         u_quad_t                n_brev;         /* Modify rev when cached */
   97         u_quad_t                n_lrev;         /* Modify rev for lease */
   98         struct nfsvattr         n_vattr;        /* Vnode attribute cache */
   99         time_t                  n_attrstamp;    /* Attr. cache timestamp */
  100         struct nfs_accesscache  n_accesscache[NFS_ACCESSCACHESIZE];
  101         struct timespec         n_mtime;        /* Prev modify time. */
  102         struct nfsfh            *n_fhp;         /* NFS File Handle */
  103         struct vnode            *n_vnode;       /* associated vnode */
  104         struct vnode            *n_dvp;         /* parent vnode */
  105         struct lockf            *n_lockf;       /* Locking record of file */
  106         int                     n_error;        /* Save write error value */
  107         union {
  108                 struct timespec nf_atim;        /* Special file times */
  109                 nfsuint64       nd_cookieverf;  /* Cookie verifier (dir only) */
  110                 u_char          nd4_cookieverf[NFSX_VERF];
  111         } n_un1;
  112         union {
  113                 struct timespec nf_mtim;
  114                 off_t           nd_direof;      /* Dir. EOF offset cache */
  115         } n_un2;
  116         union {
  117                 struct sillyrename *nf_silly;   /* Ptr to silly rename struct */
  118                 LIST_HEAD(, nfsdmap) nd_cook;   /* cookies */
  119         } n_un3;
  120         short                   n_fhsize;       /* size in bytes, of fh */
  121         u_int32_t               n_flag;         /* Flag for locking.. */
  122         int                     n_directio_opens;
  123         int                     n_directio_asyncwr;
  124         u_int64_t                n_change;      /* old Change attribute */
  125         struct nfsv4node        *n_v4;          /* extra V4 stuff */
  126         struct ucred            *n_writecred;   /* Cred. for putpages */
  127 };
  128 
  129 #define n_atim          n_un1.nf_atim
  130 #define n_mtim          n_un2.nf_mtim
  131 #define n_sillyrename   n_un3.nf_silly
  132 #define n_cookieverf    n_un1.nd_cookieverf
  133 #define n4_cookieverf   n_un1.nd4_cookieverf
  134 #define n_direofoffset  n_un2.nd_direof
  135 #define n_cookies       n_un3.nd_cook
  136 
  137 /*
  138  * Flags for n_flag
  139  */
  140 #define NDIRCOOKIELK    0x00000001  /* Lock to serialize access to directory cookies */
  141 #define NFSYNCWAIT      0x00000002  /* fsync waiting for all directio async
  142                                   writes to drain */
  143 #define NMODIFIED       0x00000004  /* Might have a modified buffer in bio */
  144 #define NWRITEERR       0x00000008  /* Flag write errors so close will know */
  145 #define NCREATED        0x00000010  /* Opened by nfs_create() */
  146 #define NTRUNCATE       0x00000020  /* Opened by nfs_setattr() */
  147 #define NSIZECHANGED    0x00000040  /* File size has changed: need cache inval */
  148 #define NNONCACHE       0x00000080  /* Node marked as noncacheable */
  149 #define NACC            0x00000100  /* Special file accessed */
  150 #define NUPD            0x00000200  /* Special file updated */
  151 #define NCHG            0x00000400  /* Special file times changed */
  152 #define NDELEGMOD       0x00000800  /* Modified delegation */
  153 #define NDELEGRECALL    0x00001000  /* Recall in progress */
  154 #define NREMOVEINPROG   0x00002000  /* Remove in progress */
  155 #define NREMOVEWANT     0x00004000  /* Want notification that remove is done */
  156 #define NLOCK           0x00008000  /* Sleep lock the node */
  157 #define NLOCKWANT       0x00010000  /* Want the sleep lock */
  158 #define NNOLAYOUT       0x00020000  /* Can't get a layout for this file */
  159 #define NWRITEOPENED    0x00040000  /* Has been opened for writing */
  160 #define NHASBEENLOCKED  0x00080000  /* Has been file locked. */
  161 
  162 /*
  163  * Convert between nfsnode pointers and vnode pointers
  164  */
  165 #define VTONFS(vp)      ((struct nfsnode *)(vp)->v_data)
  166 #define NFSTOV(np)      ((struct vnode *)(np)->n_vnode)
  167 
  168 #define NFS_TIMESPEC_COMPARE(T1, T2)    (((T1)->tv_sec != (T2)->tv_sec) || ((T1)->tv_nsec != (T2)->tv_nsec))
  169 
  170 #if defined(_KERNEL)
  171 
  172 /*
  173  * Prototypes for NFS vnode operations
  174  */
  175 int     ncl_getpages(struct vop_getpages_args *);
  176 int     ncl_putpages(struct vop_putpages_args *);
  177 int     ncl_write(struct vop_write_args *);
  178 int     ncl_inactive(struct vop_inactive_args *);
  179 int     ncl_reclaim(struct vop_reclaim_args *);
  180 
  181 /* other stuff */
  182 int     ncl_removeit(struct sillyrename *, struct vnode *);
  183 int     ncl_nget(struct mount *, u_int8_t *, int, struct nfsnode **, int);
  184 nfsuint64 *ncl_getcookie(struct nfsnode *, off_t, int);
  185 void    ncl_invaldir(struct vnode *);
  186 int     ncl_upgrade_vnlock(struct vnode *);
  187 void    ncl_downgrade_vnlock(struct vnode *, int);
  188 void    ncl_dircookie_lock(struct nfsnode *);
  189 void    ncl_dircookie_unlock(struct nfsnode *);
  190 
  191 #endif /* _KERNEL */
  192 
  193 #endif  /* _NFSCLIENT_NFSNODE_H_ */

Cache object: 657ae1a44ac4800d684bf15f0de1f2a4


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.