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-/*
- *
- * Coda: an Experimental Distributed File System
- * Release 3.1
- *
- * Copyright (c) 1987-1998 Carnegie Mellon University
- * All Rights Reserved
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation, and
- * that credit is given to Carnegie Mellon University in all documents
- * and publicity pertaining to direct or indirect use of this code or its
- * derivatives.
- *
- * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
- * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
- * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
- * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
- * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
- * ANY DERIVATIVE WORK.
- *
- * Carnegie Mellon encourages users of this software to return any
- * improvements or extensions that they make, and to grant Carnegie
- * Mellon the rights to redistribute these changes without encumbrance.
- *
- * @(#) src/sys/cfs/cnode.h,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $
- * $Id: cnode.h,v 1.2 1998/09/02 19:09:53 rvb Exp $
- *
- */
-
-/*
- * Mach Operating System
- * Copyright (c) 1990 Carnegie-Mellon University
- * Copyright (c) 1989 Carnegie-Mellon University
- * All rights reserved. The CMU software License Agreement specifies
- * the terms and conditions for use and redistribution.
- */
-
-/*
- * This code was written for the Coda file system at Carnegie Mellon University.
- * Contributers include David Steere, James Kistler, and M. Satyanarayanan.
- */
-
-/*
- * HISTORY
- * $Log: cnode.h,v $
- * Revision 1.2 1998/09/02 19:09:53 rvb
- * Pass2 complete
- *
- * Revision 1.1.1.1 1998/08/29 21:14:52 rvb
- * Very Preliminary Coda
- *
- * Revision 1.10 1998/08/28 18:12:25 rvb
- * Now it also works on FreeBSD -current. This code will be
- * committed to the FreeBSD -current and NetBSD -current
- * trees. It will then be tailored to the particular platform
- * by flushing conditional code.
- *
- * Revision 1.9 1998/08/18 17:05:24 rvb
- * Don't use __RCSID now
- *
- * Revision 1.8 1998/08/18 16:31:49 rvb
- * Sync the code for NetBSD -current; test on 1.3 later
- *
- * Revision 1.7 98/02/24 22:22:53 rvb
- * Fixes up mainly to flush iopen and friends
- *
- * Revision 1.6 98/01/31 20:53:19 rvb
- * First version that works on FreeBSD 2.2.5
- *
- * Revision 1.5 98/01/23 11:53:51 rvb
- * Bring RVB_CODA1_1 to HEAD
- *
- * Revision 1.4.2.5 98/01/23 11:21:14 rvb
- * Sync with 2.2.5
- *
- * Revision 1.4.2.4 98/01/22 13:03:38 rvb
- * Had Breaken ls .
- *
- * Revision 1.4.2.3 97/12/19 14:26:09 rvb
- * session id
- *
- * Revision 1.4.2.2 97/12/16 12:40:24 rvb
- * Sync with 1.3
- *
- * Revision 1.4.2.1 97/12/06 17:41:28 rvb
- * Sync with peters coda.h
- *
- * Revision 1.4 97/12/05 10:39:30 rvb
- * Read CHANGES
- *
- * Revision 1.3.18.2 97/11/12 12:09:45 rvb
- * reorg pass1
- *
- * Revision 1.3.18.1 97/10/29 16:06:31 rvb
- * Kill DYING
- *
- * Revision 1.3 1996/12/12 22:11:03 bnoble
- * Fixed the "downcall invokes venus operation" deadlock in all known cases.
- * There may be more.
- *
- * Revision 1.2 1996/01/02 16:57:26 bnoble
- * Added support for Coda MiniCache and raw inode calls (final commit)
- *
- * Revision 1.1.2.1 1995/12/20 01:57:53 bnoble
- * Added CODA-specific files
- *
- * Revision 3.1.1.1 1995/03/04 19:08:23 bnoble
- * Branch for NetBSD port revisions
- *
- * Revision 3.1 1995/03/04 19:08:23 bnoble
- * Bump to major revision 3 to prepare for NetBSD port
- *
- * Revision 2.2 1994/12/06 13:39:18 dcs
- * Add a flag value to indicate a cnode was orphaned, e.g. the venus
- * that created it has exited. This will allow one to restart venus
- * even though some process may be cd'd into /coda.
- *
- * Revision 2.1 94/07/21 16:25:33 satya
- * Conversion to C++ 3.0; start of Coda Release 2.0
- *
- * Revision 1.2.7.1 94/06/16 11:26:02 raiff
- * Branch for release beta-16Jun1994_39118
- *
- * Revision 1.2 92/10/27 17:58:41 lily
- * merge kernel/latest and alpha/src/cfs
- *
- * Revision 2.3 92/09/30 14:16:53 mja
- * Picked up fixed #ifdef _KERNEL. Also...
- *
- * Substituted rvb's history blurb so that we agree with Mach 2.5 sources.
- * [91/02/09 jjk]
- *
- * Added contributors blurb.
- * [90/12/13 jjk]
- *
- * Revision 2.2 90/07/05 11:27:24 mrt
- * Created for the Coda File System.
- * [90/05/23 dcs]
- *
- * Revision 1.4 90/05/31 17:02:16 dcs
- * Prepare for merge with facilities kernel.
- *
- *
- *
- */
-
-#ifndef _CNODE_H_
-#define _CNODE_H_
-
-#include <sys/vnode.h>
-#include <sys/lock.h>
-#include <machine/clock.h>
-
-MALLOC_DECLARE(M_CODA);
-
-/*
- * tmp below since we need struct queue
- */
-#include <cfs/cfsk.h>
-
-/*
- * Cnode lookup stuff.
- * NOTE: CODA_CACHESIZE must be a power of 2 for cfshash to work!
- */
-#define CODA_CACHESIZE 512
-
-#define CODA_ALLOC(ptr, cast, size) \
-do { \
- ptr = (cast)malloc((unsigned long) size, M_CODA, M_WAITOK); \
- if (ptr == 0) { \
- panic("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
- } \
-} while (0)
-
-#define CODA_FREE(ptr, size) free((ptr), M_CODA)
-
-/*
- * global cache state control
- */
-extern int coda_nc_use;
-
-/*
- * Used to select debugging statements throughout the cfs code.
- */
-extern int codadebug;
-extern int coda_nc_debug;
-extern int coda_printf_delay;
-extern int coda_vnop_print_entry;
-extern int coda_psdev_print_entry;
-extern int coda_vfsop_print_entry;
-
-#define CODADBGMSK(N) (1 << N)
-#define CODADEBUG(N, STMT) { if (codadebug & CODADBGMSK(N)) { STMT } }
-#define myprintf(args) \
-do { \
- if (coda_printf_delay) \
- DELAY(coda_printf_delay);\
- printf args ; \
-} while (0)
-
-struct cnode {
- struct vnode *c_vnode;
- u_short c_flags; /* flags (see below) */
- ViceFid c_fid; /* file handle */
- struct lock c_lock; /* new lock protocol */
- struct vnode *c_ovp; /* open vnode pointer */
- u_short c_ocount; /* count of openers */
- u_short c_owrite; /* count of open for write */
- struct vattr c_vattr; /* attributes */
- char *c_symlink; /* pointer to symbolic link */
- u_short c_symlen; /* length of symbolic link */
- dev_t c_device; /* associated vnode device */
- ino_t c_inode; /* associated vnode inode */
- struct cnode *c_next; /* links if on NetBSD machine */
-};
-#define VTOC(vp) ((struct cnode *)(vp)->v_data)
-#define CTOV(cp) ((struct vnode *)((cp)->c_vnode))
-
-/* flags */
-#define C_VATTR 0x01 /* Validity of vattr in the cnode */
-#define C_SYMLINK 0x02 /* Validity of symlink pointer in the Code */
-#define C_WANTED 0x08 /* Set if lock wanted */
-#define C_LOCKED 0x10 /* Set if lock held */
-#define C_UNMOUNTING 0X20 /* Set if unmounting */
-#define C_PURGING 0x40 /* Set if purging a fid */
-
-#define VALID_VATTR(cp) ((cp->c_flags) & C_VATTR)
-#define VALID_SYMLINK(cp) ((cp->c_flags) & C_SYMLINK)
-#define IS_UNMOUNTING(cp) ((cp)->c_flags & C_UNMOUNTING)
-
-struct vcomm {
- u_long vc_seq;
- struct selinfo vc_selproc;
- struct queue vc_requests;
- struct queue vc_replys;
-};
-
-#define VC_OPEN(vcp) ((vcp)->vc_requests.forw != NULL)
-#define MARK_VC_CLOSED(vcp) (vcp)->vc_requests.forw = NULL;
-#define MARK_VC_OPEN(vcp) /* MT */
-
-struct coda_clstat {
- int ncalls; /* client requests */
- int nbadcalls; /* upcall failures */
- int reqs[CODA_NCALLS]; /* count of each request */
-};
-extern struct coda_clstat coda_clstat;
-
-/*
- * CODA structure to hold mount/file system information
- */
-struct coda_mntinfo {
- struct vnode *mi_rootvp;
- struct mount *mi_vfsp;
- struct vcomm mi_vcomm;
-};
-extern struct coda_mntinfo coda_mnttbl[]; /* indexed by minor device number */
-
-/*
- * vfs pointer to mount info
- */
-#define vftomi(vfsp) ((struct coda_mntinfo *)(vfsp->mnt_data))
-#define CODA_MOUNTED(vfsp) (vftomi((vfsp)) != (struct coda_mntinfo *)0)
-
-/*
- * vnode pointer to mount info
- */
-#define vtomi(vp) ((struct coda_mntinfo *)(vp->v_mount->mnt_data))
-
-/*
- * Used for identifying usage of "Control" object
- */
-extern struct vnode *coda_ctlvp;
-#define IS_CTL_VP(vp) ((vp) == coda_ctlvp)
-#define IS_CTL_NAME(vp, name, l)((l == CODA_CONTROLLEN) \
- && ((vp) == vtomi((vp))->mi_rootvp) \
- && strncmp(name, CODA_CONTROL, l) == 0)
-
-/*
- * An enum to tell us whether something that will remove a reference
- * to a cnode was a downcall or not
- */
-enum dc_status {
- IS_DOWNCALL = 6,
- NOT_DOWNCALL = 7
-};
-
-/* cfs_psdev.h */
-int coda_call(struct coda_mntinfo *mntinfo, int inSize, int *outSize, caddr_t buffer);
-
-/* cfs_subr.h */
-int handleDownCall(int opcode, union outputArgs *out);
-void coda_unmounting(struct mount *whoIam);
-int coda_vmflush(struct cnode *cp);
-
-/* cfs_vnodeops.h */
-struct cnode *make_coda_node(ViceFid *fid, struct mount *vfsp, short type);
-int coda_vnodeopstats_init(void);
-
-/* coda_vfsops.h */
-struct mount *devtomp(dev_t dev);
-
-/* sigh */
-#define CODA_RDWR ((u_long) 31)
-
-#endif /* _CNODE_H_ */
-