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/nfsclient/nfsnode.h

Version: -  FREEBSD  -  FREEBSD11  -  FREEBSD10  -  FREEBSD9  -  FREEBSD92  -  FREEBSD91  -  FREEBSD90  -  FREEBSD8  -  FREEBSD82  -  FREEBSD81  -  FREEBSD80  -  FREEBSD7  -  FREEBSD74  -  FREEBSD73  -  FREEBSD72  -  FREEBSD71  -  FREEBSD70  -  FREEBSD6  -  FREEBSD64  -  FREEBSD63  -  FREEBSD62  -  FREEBSD61  -  FREEBSD60  -  FREEBSD5  -  FREEBSD55  -  FREEBSD54  -  FREEBSD53  -  FREEBSD52  -  FREEBSD51  -  FREEBSD50  -  FREEBSD4  -  FREEBSD3  -  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  *      @(#)nfsnode.h   8.9 (Berkeley) 5/14/95
   33  * $FreeBSD$
   34  */
   35 
   36 #ifndef _NFSCLIENT_NFSNODE_H_
   37 #define _NFSCLIENT_NFSNODE_H_
   38 
   39 #if !defined(_NFSCLIENT_NFS_H_) && !defined(_KERNEL)
   40 #include <nfs/nfs.h>
   41 #endif
   42 
   43 /*
   44  * Silly rename structure that hangs off the nfsnode until the name
   45  * can be removed by nfs_inactive()
   46  */
   47 struct sillyrename {
   48         struct  ucred *s_cred;
   49         struct  vnode *s_dvp;
   50         int     (*s_removeit)(struct sillyrename *sp);
   51         long    s_namlen;
   52         char    s_name[32];
   53 };
   54 
   55 /*
   56  * This structure is used to save the logical directory offset to
   57  * NFS cookie mappings.
   58  * The mappings are stored in a list headed
   59  * by n_cookies, as required.
   60  * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information
   61  * stored in increasing logical offset byte order.
   62  */
   63 #define NFSNUMCOOKIES           31
   64 
   65 struct nfsdmap {
   66         LIST_ENTRY(nfsdmap)     ndm_list;
   67         int                     ndm_eocookie;
   68         union {
   69                 nfsuint64       ndmu3_cookies[NFSNUMCOOKIES];
   70                 uint64_t        ndmu4_cookies[NFSNUMCOOKIES];
   71         } ndm_un1;
   72 };
   73 
   74 #define ndm_cookies     ndm_un1.ndmu3_cookies
   75 #define ndm4_cookies    ndm_un1.ndmu4_cookies
   76 
   77 #define n_ac_ts_tid             n_ac_ts.nfs_ac_ts_tid
   78 #define n_ac_ts_pid             n_ac_ts.nfs_ac_ts_pid
   79 #define n_ac_ts_syscalls        n_ac_ts.nfs_ac_ts_syscalls
   80 
   81 struct nfs_attrcache_timestamp {
   82         lwpid_t         nfs_ac_ts_tid;
   83         pid_t           nfs_ac_ts_pid;
   84         unsigned long   nfs_ac_ts_syscalls;     
   85 };
   86 
   87 /*
   88  * The nfsnode is the nfs equivalent to ufs's inode. Any similarity
   89  * is purely coincidental.
   90  * There is a unique nfsnode allocated for each active file,
   91  * each current directory, each mounted-on file, text file, and the root.
   92  * An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
   93  * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite
   94  * type definitions), file handles of > 32 bytes should probably be split out
   95  * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by
   96  * changing the definition in nfsproto.h of NFS_SMALLFH.)
   97  * NB: Hopefully the current order of the fields is such that everything will
   98  *     be well aligned and, therefore, tightly packed.
   99  */
  100 struct nfsnode {
  101         struct mtx              n_mtx;          /* Protects all of these members */
  102         u_quad_t                n_size;         /* Current size of file */
  103         u_quad_t                n_brev;         /* Modify rev when cached */
  104         u_quad_t                n_lrev;         /* Modify rev for lease */
  105         struct vattr            n_vattr;        /* Vnode attribute cache */
  106         time_t                  n_attrstamp;    /* Attr. cache timestamp */
  107         u_int32_t               n_mode;         /* ACCESS mode cache */
  108         uid_t                   n_modeuid;      /* credentials having mode */
  109         time_t                  n_modestamp;    /* mode cache timestamp */
  110         struct timespec         n_mtime;        /* Prev modify time. */
  111         time_t                  n_ctime;        /* Prev create time. */
  112         time_t                  n_expiry;       /* Lease expiry time */
  113         nfsfh_t                 *n_fhp;         /* NFS File Handle */
  114         struct vnode            *n_vnode;       /* associated vnode */
  115         struct vnode            *n_dvp;         /* parent vnode */
  116         struct lockf            *n_lockf;       /* Locking record of file */
  117         int                     n_error;        /* Save write error value */
  118         union {
  119                 struct timespec nf_atim;        /* Special file times */
  120                 nfsuint64       nd_cookieverf;  /* Cookie verifier (dir only) */
  121                 u_char          nd4_cookieverf[NFSX_V4VERF];
  122         } n_un1;
  123         union {
  124                 struct timespec nf_mtim;
  125                 off_t           nd_direof;      /* Dir. EOF offset cache */
  126         } n_un2;
  127         union {
  128                 struct sillyrename *nf_silly;   /* Ptr to silly rename struct */
  129                 LIST_HEAD(, nfsdmap) nd_cook;   /* cookies */
  130         } n_un3;
  131         short                   n_fhsize;       /* size in bytes, of fh */
  132         short                   n_flag;         /* Flag for locking.. */
  133         nfsfh_t                 n_fh;           /* Small File Handle */
  134         struct nfs4_fctx        n_rfc;
  135         struct nfs4_fctx        n_wfc;
  136         u_char                  *n_name;        /* leaf name, for v4 OPEN op */
  137         uint32_t                n_namelen;
  138         int                     n_directio_opens;
  139         int                     n_directio_asyncwr;
  140         struct nfs_attrcache_timestamp n_ac_ts;
  141 };
  142 
  143 #define n_atim          n_un1.nf_atim
  144 #define n_mtim          n_un2.nf_mtim
  145 #define n_sillyrename   n_un3.nf_silly
  146 #define n_cookieverf    n_un1.nd_cookieverf
  147 #define n4_cookieverf   n_un1.nd4_cookieverf
  148 #define n_direofoffset  n_un2.nd_direof
  149 #define n_cookies       n_un3.nd_cook
  150 
  151 /*
  152  * Flags for n_flag
  153  */
  154 #define NFSYNCWAIT      0x0002  /* fsync waiting for all directio async writes
  155                                   to drain */
  156 #define NMODIFIED       0x0004  /* Might have a modified buffer in bio */
  157 #define NWRITEERR       0x0008  /* Flag write errors so close will know */
  158 /* 0x20, 0x40, 0x80 free */
  159 #define NACC            0x0100  /* Special file accessed */
  160 #define NUPD            0x0200  /* Special file updated */
  161 #define NCHG            0x0400  /* Special file times changed */
  162 #define NCREATED        0x0800  /* Opened by nfs_create() */
  163 #define NTRUNCATE       0x1000  /* Opened by nfs_setattr() */
  164 #define NSIZECHANGED    0x2000  /* File size has changed: need cache inval */
  165 #define NNONCACHE       0x4000  /* Node marked as noncacheable */
  166 #define NDIRCOOKIELK    0x8000  /* Lock to serialize access to directory cookies */
  167 
  168 /*
  169  * Convert between nfsnode pointers and vnode pointers
  170  */
  171 #define VTONFS(vp)      ((struct nfsnode *)(vp)->v_data)
  172 #define NFSTOV(np)      ((struct vnode *)(np)->n_vnode)
  173 
  174 #define NFS_TIMESPEC_COMPARE(T1, T2)    (((T1)->tv_sec != (T2)->tv_sec) || ((T1)->tv_nsec != (T2)->tv_nsec))
  175 
  176 /*
  177  * Queue head for nfsiod's
  178  */
  179 extern TAILQ_HEAD(nfs_bufq, buf) nfs_bufq;
  180 extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON];
  181 extern struct nfsmount *nfs_iodmount[NFS_MAXASYNCDAEMON];
  182 
  183 #if defined(_KERNEL)
  184 
  185 extern  struct vop_vector       nfs_fifoops;
  186 extern  struct vop_vector       nfs_vnodeops;
  187 extern  struct vop_vector       nfs4_vnodeops;
  188 extern struct buf_ops buf_ops_nfs;
  189 extern struct buf_ops buf_ops_nfs4;
  190 
  191 /*
  192  * Prototypes for NFS vnode operations
  193  */
  194 int     nfs_getpages(struct vop_getpages_args *);
  195 int     nfs_putpages(struct vop_putpages_args *);
  196 int     nfs_write(struct vop_write_args *);
  197 int     nfs_inactive(struct vop_inactive_args *);
  198 int     nfs_reclaim(struct vop_reclaim_args *);
  199 
  200 /* other stuff */
  201 int     nfs_removeit(struct sillyrename *);
  202 int     nfs4_removeit(struct sillyrename *);
  203 int     nfs_nget(struct mount *, nfsfh_t *, int, struct nfsnode **, int flags);
  204 nfsuint64 *nfs_getcookie(struct nfsnode *, off_t, int);
  205 uint64_t *nfs4_getcookie(struct nfsnode *, off_t, int);
  206 void    nfs_invaldir(struct vnode *);
  207 void    nfs4_invaldir(struct vnode *);
  208 int     nfs_upgrade_vnlock(struct vnode *vp, struct thread *td);
  209 void    nfs_downgrade_vnlock(struct vnode *vp, struct thread *td, int old_lock);
  210 void    nfs_printf(const char *fmt, ...);
  211 
  212 void nfs_dircookie_lock(struct nfsnode *np);
  213 void nfs_dircookie_unlock(struct nfsnode *np);
  214 
  215 #endif /* _KERNEL */
  216 
  217 #endif

Cache object: 4e01ea585a82f64e54fdd4e65f7336ab


[ 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.