BSD 4_4 release

[unix-history] / usr / src / sys / nfs / nfsnode.h

diff --git a/usr/src/sys/nfs/nfsnode.h b/usr/src/sys/nfs/nfsnode.h
index a7d8562..e2decd5 100644 (file)
--- a/usr/src/sys/nfs/nfsnode.h
+++ b/usr/src/sys/nfs/nfsnode.h
@@ -1,27 +1,51 @@
 /*
 /*

- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
+ * 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.
  *
  *
  * This code is derived from software contributed to Berkeley by
  * Rick Macklem at The University of Guelph.
  *

- * Redistribution is only permitted until one year after the first shipment
- * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
- * binary forms are permitted provided that: (1) source distributions retain
- * this entire copyright notice and comment, and (2) distributions including
- * binaries display the following acknowledgement:  This product includes
- * software developed by the University of California, Berkeley and its
- * contributors'' in the documentation or other materials provided with the
- * distribution and in all advertising materials mentioning features or use
- * of this software.  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 AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. 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.

  *
  *

- *     @(#)nfsnode.h   7.11 (Berkeley) 6/28/90
+ * 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.
+ *
+ *     @(#)nfsnode.h   8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * Silly rename structure that hangs off the nfsnode until the name
+ * can be removed by nfs_inactive()

  */
  */

+struct sillyrename {
+       struct  ucred *s_cred;
+       struct  vnode *s_dvp;
+       long    s_namlen;
+       char    s_name[20];
+};

 
 /*
  * The nfsnode is the nfs equivalent to ufs's inode. Any similarity
 
 /*
  * The nfsnode is the nfs equivalent to ufs's inode. Any similarity


@@ -32,36 +56,104 @@
  */
 
 struct nfsnode {
  */
 
 struct nfsnode {

-       struct  nfsnode *n_chain[2];    /* must be first */
+       struct  nfsnode *n_forw;        /* hash, forward */
+       struct  nfsnode **n_back;       /* hash, backward */

        nfsv2fh_t n_fh;                 /* NFS File Handle */
        long    n_flag;                 /* Flag for locking.. */
        nfsv2fh_t n_fh;                 /* NFS File Handle */
        long    n_flag;                 /* Flag for locking.. */

-       struct  vnode *n_vnode; /* vnode associated with this nfsnode */
-       time_t  n_attrstamp;    /* Time stamp (sec) for attributes */
-       struct  vattr n_vattr;  /* Vnode attribute cache */
-       struct  sillyrename *n_sillyrename;     /* Ptr to silly rename struct */
-       u_long  n_size;         /* Current size of file */
-       time_t  n_mtime;        /* Prev modify time to maintain data cache consistency*/
-       time_t  n_ctime;        /* Prev create time for name cache consistency*/
-       int     n_error;        /* Save write error value */
-       pid_t   n_lockholder;   /* holder of nfsnode lock */
-       pid_t   n_lockwaiter;   /* most recent waiter for nfsnode lock */
-       u_long  n_direofoffset; /* Dir. EOF offset cache */
+       struct  vnode *n_vnode;         /* vnode associated with this node */
+       struct  vattr n_vattr;          /* Vnode attribute cache */
+       time_t  n_attrstamp;            /* Time stamp for cached attributes */
+       struct  sillyrename *n_sillyrename; /* Ptr to silly rename struct */
+       off_t   n_size;                 /* Current size of file */
+       int     n_error;                /* Save write error value */
+       u_long  n_direofoffset;         /* Dir. EOF offset cache */
+       time_t  n_mtime;                 /* Prev modify time. */
+       time_t  n_ctime;                 /* Prev create time. */
+       u_quad_t n_brev;                 /* Modify rev when cached */
+       u_quad_t n_lrev;                 /* Modify rev for lease */
+       time_t  n_expiry;                /* Lease expiry time */
+       struct  nfsnode *n_tnext;        /* Nqnfs timer chain */
+       struct  nfsnode *n_tprev;               
+       long    spare1;                 /* To 8 byte boundary */
+       struct  sillyrename n_silly;    /* Silly rename struct */
+       struct  timeval n_atim;         /* Special file times */
+       struct  timeval n_mtim;

 };
 
 };
 

-#define        n_forw          n_chain[0]
-#define        n_back          n_chain[1]
+/*
+ * Flags for n_flag
+ */
+#define        NFLUSHWANT      0x0001  /* Want wakeup from a flush in prog. */
+#define        NFLUSHINPROG    0x0002  /* Avoid multiple calls to vinvalbuf() */
+#define        NMODIFIED       0x0004  /* Might have a modified buffer in bio */
+#define        NWRITEERR       0x0008  /* Flag write errors so close will know */
+#define        NQNFSNONCACHE   0x0020  /* Non-cachable lease */
+#define        NQNFSWRITE      0x0040  /* Write lease */
+#define        NQNFSEVICTED    0x0080  /* Has been evicted */
+#define        NACC            0x0100  /* Special file accessed */
+#define        NUPD            0x0200  /* Special file updated */
+#define        NCHG            0x0400  /* Special file times changed */

 
 

-#ifdef KERNEL

 /*
  * Convert between nfsnode pointers and vnode pointers
  */
 #define VTONFS(vp)     ((struct nfsnode *)(vp)->v_data)
 #define NFSTOV(np)     ((struct vnode *)(np)->n_vnode)
 /*
  * Convert between nfsnode pointers and vnode pointers
  */
 #define VTONFS(vp)     ((struct nfsnode *)(vp)->v_data)
 #define NFSTOV(np)     ((struct vnode *)(np)->n_vnode)

-#endif
+
+#ifdef KERNEL

 /*
 /*

- * Flags for n_flag
+ * Prototypes for NFS vnode operations

  */
  */

-#define        NLOCKED         0x1     /* Lock the node for other local accesses */
-#define        NWANT           0x2     /* Want above lock */
-#define        NMODIFIED       0x4     /* Might have a modified buffer in bio */
-#define        NWRITEERR       0x8     /* Flag write errors so close will know */
+int    nfs_lookup __P((struct vop_lookup_args *));
+int    nfs_create __P((struct vop_create_args *));
+int    nfs_mknod __P((struct vop_mknod_args *));
+int    nfs_open __P((struct vop_open_args *));
+int    nfs_close __P((struct vop_close_args *));
+int    nfsspec_close __P((struct vop_close_args *));
+#ifdef FIFO
+int    nfsfifo_close __P((struct vop_close_args *));
+#endif
+int    nfs_access __P((struct vop_access_args *));
+int    nfsspec_access __P((struct vop_access_args *));
+int    nfs_getattr __P((struct vop_getattr_args *));
+int    nfs_setattr __P((struct vop_setattr_args *));
+int    nfs_read __P((struct vop_read_args *));
+int    nfs_write __P((struct vop_write_args *));
+int    nfsspec_read __P((struct vop_read_args *));
+int    nfsspec_write __P((struct vop_write_args *));
+#ifdef FIFO
+int    nfsfifo_read __P((struct vop_read_args *));
+int    nfsfifo_write __P((struct vop_write_args *));
+#endif
+#define nfs_ioctl ((int (*) __P((struct  vop_ioctl_args *)))enoioctl)
+#define nfs_select ((int (*) __P((struct  vop_select_args *)))seltrue)
+int    nfs_mmap __P((struct vop_mmap_args *));
+int    nfs_fsync __P((struct vop_fsync_args *));
+#define nfs_seek ((int (*) __P((struct  vop_seek_args *)))nullop)
+int    nfs_remove __P((struct vop_remove_args *));
+int    nfs_link __P((struct vop_link_args *));
+int    nfs_rename __P((struct vop_rename_args *));
+int    nfs_mkdir __P((struct vop_mkdir_args *));
+int    nfs_rmdir __P((struct vop_rmdir_args *));
+int    nfs_symlink __P((struct vop_symlink_args *));
+int    nfs_readdir __P((struct vop_readdir_args *));
+int    nfs_readlink __P((struct vop_readlink_args *));
+int    nfs_abortop __P((struct vop_abortop_args *));
+int    nfs_inactive __P((struct vop_inactive_args *));
+int    nfs_reclaim __P((struct vop_reclaim_args *));
+int    nfs_lock __P((struct vop_lock_args *));
+int    nfs_unlock __P((struct vop_unlock_args *));
+int    nfs_bmap __P((struct vop_bmap_args *));
+int    nfs_strategy __P((struct vop_strategy_args *));
+int    nfs_print __P((struct vop_print_args *));
+int    nfs_islocked __P((struct vop_islocked_args *));
+int    nfs_pathconf __P((struct vop_pathconf_args *));
+int    nfs_advlock __P((struct vop_advlock_args *));
+int    nfs_blkatoff __P((struct vop_blkatoff_args *));
+int    nfs_vget __P((struct mount *, ino_t, struct vnode **));
+int    nfs_valloc __P((struct vop_valloc_args *));
+int    nfs_vfree __P((struct vop_vfree_args *));
+int    nfs_truncate __P((struct vop_truncate_args *));
+int    nfs_update __P((struct vop_update_args *));
+int    nfs_bwrite __P((struct vop_bwrite_args *));
+#endif /* KERNEL */