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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.
+*/
+
+/* $Header: /afs/cs/project/coda-src/cvs/coda/kernel-src/vfs/freebsd/cfs/cnode.h,v 1.10 1998/08/28 18:12:25 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 1.10 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_CFS1_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 CFS-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>
+
+#ifdef __FreeBSD__
+
+/* for the prototype of DELAY() */
+#include <machine/clock.h>
+
+#ifdef __FreeBSD_version
+/* You would think that <sys/param.h> or something would include this */
+#include <sys/lock.h>
+
+MALLOC_DECLARE(M_CFS);
+
+#else
+
+/* yuck yuck yuck */
+#define vref(x) cvref(x)
+extern void cvref(struct vnode *vp);
+/* yuck yuck yuck */
+
+#endif
+#endif
+
+#if defined(__NetBSD__) && defined(NetBSD1_3) && (NetBSD1_3 >= 7)
+#define NEW_LOCKMGR(l, f, i) lockmgr(l, f, i)
+#define VOP_X_LOCK(vn, fl) vn_lock(vn, fl)
+#define VOP_X_UNLOCK(vn, fl) VOP_UNLOCK(vn, fl)
+
+#elif defined(__FreeBSD_version)
+#define NEW_LOCKMGR(l, f, i) lockmgr(l, f, i, curproc)
+#define VOP_X_LOCK(vn, fl) vn_lock(vn, fl, curproc)
+#define VOP_X_UNLOCK(vn, fl) VOP_UNLOCK(vn, fl, curproc)
+
+/* NetBSD 1.3 & FreeBSD 2.2.x */
+#else
+#undef NEW_LOCKMGR
+#define VOP_X_LOCK(vn, fl) VOP_LOCK(vn)
+#define VOP_X_UNLOCK(vn, fl) VOP_UNLOCK(vn)
+#endif
+
+/*
+ * tmp below since we need struct queue
+ */
+#include <cfs/cfsk.h>
+
+/*
+ * Cnode lookup stuff.
+ * NOTE: CFS_CACHESIZE must be a power of 2 for cfshash to work!
+ */
+#define CFS_CACHESIZE 512
+
+#define CFS_ALLOC(ptr, cast, size) \
+do { \
+ ptr = (cast)malloc((unsigned long) size, M_CFS, M_WAITOK); \
+ if (ptr == 0) { \
+ panic("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
+ } \
+} while (0)
+
+#define CFS_FREE(ptr, size) free((ptr), M_CFS)
+
+/*
+ * global cache state control
+ */
+extern int cfsnc_use;
+
+/*
+ * Used to select debugging statements throughout the cfs code.
+ */
+extern int cfsdebug;
+extern int cfsnc_debug;
+extern int cfs_printf_delay;
+extern int cfs_vnop_print_entry;
+extern int cfs_psdev_print_entry;
+extern int cfs_vfsop_print_entry;
+
+#define CFSDBGMSK(N) (1 << N)
+#define CFSDEBUG(N, STMT) { if (cfsdebug & CFSDBGMSK(N)) { STMT } }
+#define myprintf(args) \
+do { \
+ if (cfs_printf_delay) \
+ DELAY(cfs_printf_delay);\
+ printf args ; \
+} while (0)
+
+struct cnode {
+ struct vnode *c_vnode;
+ u_short c_flags; /* flags (see below) */
+ ViceFid c_fid; /* file handle */
+#ifdef NEW_LOCKMGR
+ struct lock c_lock; /* new lock protocol */
+#endif
+ 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 cfs_clstat {
+ int ncalls; /* client requests */
+ int nbadcalls; /* upcall failures */
+ int reqs[CFS_NCALLS]; /* count of each request */
+};
+extern struct cfs_clstat cfs_clstat;
+
+/*
+ * CFS structure to hold mount/file system information
+ */
+struct cfs_mntinfo {
+ struct vnode *mi_rootvp;
+ struct mount *mi_vfsp;
+ struct vcomm mi_vcomm;
+};
+extern struct cfs_mntinfo cfs_mnttbl[]; /* indexed by minor device number */
+
+/*
+ * vfs pointer to mount info
+ */
+#define vftomi(vfsp) ((struct cfs_mntinfo *)(vfsp->mnt_data))
+#define CFS_MOUNTED(vfsp) (vftomi((vfsp)) != (struct cfs_mntinfo *)0)
+
+/*
+ * vnode pointer to mount info
+ */
+#define vtomi(vp) ((struct cfs_mntinfo *)(vp->v_mount->mnt_data))
+
+/*
+ * Used for identifying usage of "Control" object
+ */
+extern struct vnode *cfs_ctlvp;
+#define IS_CTL_VP(vp) ((vp) == cfs_ctlvp)
+#define IS_CTL_NAME(vp, name, l)((l == CFS_CONTROLLEN) \
+ && ((vp) == vtomi((vp))->mi_rootvp) \
+ && strncmp(name, CFS_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 cfscall(struct cfs_mntinfo *mntinfo, int inSize, int *outSize, caddr_t buffer);
+
+/* cfs_subr.h */
+int handleDownCall(int opcode, union outputArgs *out);
+void cfs_unmounting(struct mount *whoIam);
+int cfs_vmflush(struct cnode *cp);
+
+/* cfs_vnodeops.h */
+struct cnode *makecfsnode(ViceFid *fid, struct mount *vfsp, short type);
+int cfs_vnodeopstats_init(void);
+
+/* cfs_vfsops.h */
+struct mount *devtomp(dev_t dev);
+
+#if !(defined NetBSD1_3) && !defined(__FreeBSD_version)
+#define __RCSID(x) static char *rcsid = x
+#endif
+
+/* sigh */
+#define CFS_RDWR ((u_long) 31)
+
+#endif /* _CNODE_H_ */
+
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