[unix-history] / sys / pcfs / denode.h

/*
 *  Written by Paul Popelka (paulp@uts.amdahl.com)
 *
 *  You can do anything you want with this software,
 *    just don't say you wrote it,
 *    and don't remove this notice.
 *
 *  This software is provided "as is".
 *
 *  The author supplies this software to be publicly
 *  redistributed on the understanding that the author
 *  is not responsible for the correct functioning of
 *  this software in any circumstances and is not liable
 *  for any damages caused by this software.
 *
 *  October 1992
 *
 *	$Id: denode.h,v 1.5 1993/11/25 01:37:04 wollman Exp $
 */

#ifndef _PCFS_DENODE_H_
#define _PCFS_DENODE_H_ 1

/*
 *  This is the pc filesystem specific portion of the
 *  vnode structure.
 *  To describe a file uniquely the de_dirclust, de_diroffset,
 *  and de_de.deStartCluster fields are used.  de_dirclust
 *  contains the cluster number of the directory cluster containing
 *  the entry for a file or directory.  de_diroffset is the
 *  index into the cluster for the entry describing a file
 *  or directory.  de_de.deStartCluster is the number of the
 *  first cluster of the file or directory.  Now to describe the
 *  quirks of the pc filesystem.
 *  - Clusters 0 and 1 are reserved.
 *  - The first allocatable cluster is 2.
 *  - The root directory is of fixed size and all blocks that
 *    make it up are contiguous.
 *  - Cluster 0 refers to the root directory when it is found
 *    in the startcluster field of a directory entry that points
 *    to another directory.
 *  - Cluster 0 implies a 0 length file when found in the start
 *    cluster field of a directory entry that points to a file.
 *  - You can't use the cluster number 0 to derive
 *    the address of the root directory.
 *  - Multiple directory entries can point to a directory.
 *    The entry in the parent directory points to a child
 *    directory.  Any directories in the child directory contain
 *    a ".." entry that points back to the child.  The child
 *    directory itself contains a "." entry that points to
 *    itself.
 *  - The root directory does not contain a "." or ".." entry.
 *  - Directory entries for directories are never changed once
 *    they are created (except when removed).  The size stays
 *    0, and the last modification time is never changed.  This
 *    is because so many directory entries can point to the physical
 *    clusters that make up a directory.  It would lead to an update
 *    nightmare.
 *  - The length field in a directory entry pointing to a directory
 *    contains 0 (always).  The only way to find the end of a directory
 *    is to follow the cluster chain until the "last cluster"
 *    marker is found.
 *  My extensions to make this house of cards work.  These apply
 *  only to the in memory copy of the directory entry.
 *  - A reference count for each denode will be kept since dos doesn't
 *    keep such things.
 */

/* Internal pseudo-offset for (nonexistent) directory entry for the root dir
 * in the root dir */
#define	PCFSROOT_OFS	0x1fffffff

/*
 *  The fat cache structure.
 *  fc_fsrcn is the filesystem relative cluster number
 *  that corresponds to the file relative cluster number
 *  in this structure (fc_frcn).
 */
struct fatcache {
	u_short fc_frcn;	/* file relative cluster number	*/
	u_short fc_fsrcn;	/* filesystem relative cluster number */
};

/*
 *  The fat entry cache as it stands helps make extending
 *  files a "quick" operation by avoiding having to scan
 *  the fat to discover the last cluster of the file.
 *  The cache also helps sequential reads by remembering
 *  the last cluster read from the file.  This also prevents
 *  us from having to rescan the fat to find the next cluster
 *  to read.  This cache is probably pretty worthless if a
 *  file is opened by multiple processes.
 */
#define	FC_SIZE		2	/* number of entries in the cache	*/
#define	FC_LASTMAP	0	/* entry the last call to pcbmap() resolved to */
#define	FC_LASTFC	1	/* entry for the last cluster in the file */

#define	FCE_EMPTY	0xffff	/* doesn't represent an actual cluster # */

/*
 *  Set a slot in the fat cache.
 */
#define	fc_setcache(dep, slot, frcn, fsrcn) \
	(dep)->de_fc[slot].fc_frcn = frcn; \
	(dep)->de_fc[slot].fc_fsrcn = fsrcn;

/*
 *  This is the in memory variant of a dos directory
 *  entry.  It is usually contained within a vnode.
 */
struct denode {
	struct denode *de_chain[2];	/* hash chain ptrs		*/
	struct vnode *de_vnode;		/* addr of vnode we are part of	*/
	struct vnode *de_devvp;		/* vnode of blk dev we live on	*/
	u_long de_flag;			/* flag bits			*/
	dev_t de_dev;			/* device where direntry lives	*/
	u_long de_dirclust;		/* cluster of the directory file
					 *  containing this entry	*/
	u_long de_diroffset;		/* ordinal of this entry in the
					 *  directory			*/
	long de_refcnt;			/* reference count		*/
	struct pcfsmount *de_pmp;	/* addr of our mount struct	*/
	struct lockf *de_lockf;		/* byte level lock list		*/
	long de_spare0;			/* current lock holder		*/
	long de_spare1;			/* lock wanter			*/
	struct direntry de_de;		/* the actual directory entry	*/
	struct fatcache de_fc[FC_SIZE];	/* fat cache			*/
};

/*
 *  Values for the de_flag field of the denode.
 */
#define	DELOCKED	0x0001		/* directory entry is locked	*/
#define	DEWANT		0x0002		/* someone wants this de	*/
#define	DERENAME	0x0004		/* de is being renamed		*/
#define	DEUPD		0x0008		/* file has been modified	*/
#define	DESHLOCK	0x0010		/* file has shared lock		*/
#define	DEEXLOCK	0x0020		/* file has exclusive lock	*/
#define	DELWAIT		0x0040		/* someone waiting on file lock	*/
#define	DEMOD		0x0080		/* denode wants to be written back
					 *  to disk			*/

/*
 *  Shorthand macros used to reference fields in the direntry
 *  contained in the denode structure.
 */
#define	de_Name		de_de.deName
#define	de_Extension	de_de.deExtension
#define	de_Attributes	de_de.deAttributes
#define	de_Reserved	de_de.deReserved
#define	de_Time		de_de.deTime
#define	de_Date		de_de.deDate
#define	de_StartCluster	de_de.deStartCluster
#define	de_FileSize	de_de.deFileSize
#define	de_forw		de_chain[0]
#define	de_back		de_chain[1]

#if defined(KERNEL)

#define	VTODE(vp)	((struct denode *)(vp)->v_data)
#define	DETOV(de)	((de)->de_vnode)

#define	DELOCK(de)	delock(de)
extern void delock(struct denode *);
#define	DEUNLOCK(de)	deunlock(de)
extern void deunlock(struct denode *);

#define	DEUPDAT(dep, t, waitfor) \
	if (dep->de_flag & DEUPD) \
		(void) deupdat(dep, t, waitfor);

#define	DETIMES(dep, t) \
	if (dep->de_flag & DEUPD) { \
		(dep)->de_flag |= DEMOD; \
		unix2dostime(t, (union dosdate *)&dep->de_Date, \
			(union dostime *)&dep->de_Time); \
		(dep)->de_flag &= ~DEUPD; \
	}

/*
 * This overlays the fid sturcture (see mount.h)
 */
struct defid {
	u_short	defid_len;	/* length of structure */
	u_short	defid_pad;	/* force long alignment */

	u_long	defid_dirclust;	/* cluster this dir entry came from	*/
	u_long	defid_dirofs;	/* index of entry within the cluster	*/

/*	u_long	defid_gen;*/	/* generation number */
};

/*
 * Prototypes for PCFS vnode operations
 */
int pcfs_lookup __P((struct vnode *vp, struct nameidata *ndp, struct proc *p));
int pcfs_create __P((struct nameidata *ndp, struct vattr *vap, struct proc *p));
int pcfs_mknod __P((struct nameidata *ndp, struct vattr *vap, struct ucred *cred,
	struct proc *p));
int pcfs_open __P((struct vnode *vp, int mode, struct ucred *cred,
	struct proc *p));
int pcfs_close __P((struct vnode *vp, int fflag, struct ucred *cred,
	struct proc *p));
int pcfs_access __P((struct vnode *vp, int mode, struct ucred *cred,
	struct proc *p));
int pcfs_getattr __P((struct vnode *vp, struct vattr *vap, struct ucred *cred,
	struct proc *p));
int pcfs_setattr __P((struct vnode *vp, struct vattr *vap, struct ucred *cred,
	struct proc *p));
int pcfs_read __P((struct vnode *vp, struct uio *uio, int ioflag,
	struct ucred *cred));
int pcfs_write __P((struct vnode *vp, struct uio *uio, int ioflag,
	struct ucred *cred));
int pcfs_ioctl __P((struct vnode *vp, int command, caddr_t data, int fflag,
	struct ucred *cred, struct proc *p));
int pcfs_select __P((struct vnode *vp, int which, int fflags, struct ucred *cred,
	struct proc *p));
int pcfs_mmap __P((struct vnode *vp, int fflags, struct ucred *cred,
	struct proc *p));
int pcfs_fsync __P((struct vnode *vp, int fflags, struct ucred *cred,
	int waitfor, struct proc *p));
int pcfs_seek __P((struct vnode *vp, off_t oldoff, off_t newoff,
	struct ucred *cred));
int pcfs_remove __P((struct nameidata *ndp, struct proc *p));
int pcfs_link __P((struct vnode *vp, struct nameidata *ndp, struct proc *p));
int pcfs_rename __P((struct nameidata *fndp, struct nameidata *tdnp,
	struct proc *p));
int pcfs_mkdir __P((struct nameidata *ndp, struct vattr *vap, struct proc *p));
int pcfs_rmdir __P((struct nameidata *ndp, struct proc *p));
int pcfs_symlink __P((struct nameidata *ndp, struct vattr *vap, char *target,
	struct proc *p));
int pcfs_readdir __P((struct vnode *vp, struct uio *uio, struct ucred *cred,
	int *eofflagp));
int pcfs_readlink __P((struct vnode *vp, struct uio *uio, struct ucred *cred));
int pcfs_abortop __P((struct nameidata *ndp));
int pcfs_inactive __P((struct vnode *vp, struct proc *p));
int pcfs_reclaim __P((struct vnode *vp));
int pcfs_lock __P((struct vnode *vp));
int pcfs_unlock __P((struct vnode *vp));
int pcfs_bmap __P((struct vnode *vp, daddr_t bn, struct vnode **vpp,
	daddr_t *bnp));
int pcfs_strategy __P((struct buf *bp));
void pcfs_print __P((struct vnode *vp));
int pcfs_islocked __P((struct vnode *vp));
int pcfs_advlock __P((struct vnode *vp, caddr_t id, int op, struct flock *fl,
	int flags));

/*
 *  Internal service routine prototypes.
 */
int deget __P((struct pcfsmount *pmp, u_long dirclust, u_long diroffset,
	struct direntry *direntptr, struct denode **depp));

extern int pcbmap(struct denode *, u_long, daddr_t *, u_long *);
extern void fc_purge(struct denode *, u_int);
extern void updateotherfats(struct pcfsmount *, struct buf *, u_long);
extern int clusterfree(struct pcfsmount *, u_long, u_long *);
extern int fatentry(int, struct pcfsmount *, u_long, u_long *, u_long);
extern int clusteralloc(struct pcfsmount *, u_long *, u_long);
extern int freeclusterchain(struct pcfsmount *, u_long);
extern int fillinusemap(struct pcfsmount *);
extern int extendfile(struct denode *, struct buf **, u_int *);
extern int readep(struct pcfsmount *, u_long, u_long, struct buf **,
		  struct direntry **);
extern int readde(struct denode *, struct buf **, struct direntry **);
extern int doscheckpath(struct denode *, struct denode *);
extern int dosdirempty(struct denode *);
extern int removede(struct nameidata *);
extern int markdeleted(struct pcfsmount *, u_long, u_long);
extern int createde(struct denode *, struct nameidata *, struct denode **);
extern int pcfs_lookup(struct vnode *, struct nameidata *, struct proc *);

extern void pcfs_init(void);
extern void deput(struct denode *);
extern int deupdat(struct denode *, struct timeval *, int);
extern int detrunc(struct denode *, u_long, int);
extern void reinsert(struct denode *);
extern int pcfs_reclaim(struct vnode *);
extern int pcfs_inactive(struct vnode *, struct proc *);


#endif /* defined(KERNEL) */
#endif /* _PCFS_DENODE_H_ */
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Written by Paul Popelka (paulp@uts.amdahl.com)
	3	*
	4	* You can do anything you want with this software,
	5	* just don't say you wrote it,
	6	* and don't remove this notice.
	7	*
	8	* This software is provided "as is".
	9	*
	10	* The author supplies this software to be publicly
	11	* redistributed on the understanding that the author
	12	* is not responsible for the correct functioning of
	13	* this software in any circumstances and is not liable
	14	* for any damages caused by this software.
	15	*
	16	* October 1992
	17	*
fde1aeb2	18	* $Id: denode.h,v 1.5 1993/11/25 01:37:04 wollman Exp $
15637ed4 RG	19	*/
15637ed4 RG	20
bbc3f849 GW	21	#ifndef _PCFS_DENODE_H_
	22	#define _PCFS_DENODE_H_ 1
	23
15637ed4 RG	24	/*
	25	* This is the pc filesystem specific portion of the
	26	* vnode structure.
	27	* To describe a file uniquely the de_dirclust, de_diroffset,
	28	* and de_de.deStartCluster fields are used. de_dirclust
	29	* contains the cluster number of the directory cluster containing
	30	* the entry for a file or directory. de_diroffset is the
	31	* index into the cluster for the entry describing a file
	32	* or directory. de_de.deStartCluster is the number of the
	33	* first cluster of the file or directory. Now to describe the
	34	* quirks of the pc filesystem.
	35	* - Clusters 0 and 1 are reserved.
	36	* - The first allocatable cluster is 2.
	37	* - The root directory is of fixed size and all blocks that
	38	* make it up are contiguous.
	39	* - Cluster 0 refers to the root directory when it is found
	40	* in the startcluster field of a directory entry that points
	41	* to another directory.
	42	* - Cluster 0 implies a 0 length file when found in the start
	43	* cluster field of a directory entry that points to a file.
	44	* - You can't use the cluster number 0 to derive
	45	* the address of the root directory.
	46	* - Multiple directory entries can point to a directory.
	47	* The entry in the parent directory points to a child
	48	* directory. Any directories in the child directory contain
	49	* a ".." entry that points back to the child. The child
	50	* directory itself contains a "." entry that points to
	51	* itself.
	52	* - The root directory does not contain a "." or ".." entry.
	53	* - Directory entries for directories are never changed once
	54	* they are created (except when removed). The size stays
	55	* 0, and the last modification time is never changed. This
	56	* is because so many directory entries can point to the physical
	57	* clusters that make up a directory. It would lead to an update
	58	* nightmare.
	59	* - The length field in a directory entry pointing to a directory
	60	* contains 0 (always). The only way to find the end of a directory
	61	* is to follow the cluster chain until the "last cluster"
	62	* marker is found.
	63	* My extensions to make this house of cards work. These apply
	64	* only to the in memory copy of the directory entry.
	65	* - A reference count for each denode will be kept since dos doesn't
	66	* keep such things.
	67	*/
	68
	69	/* Internal pseudo-offset for (nonexistent) directory entry for the root dir
	70	* in the root dir */
	71	#define PCFSROOT_OFS 0x1fffffff
	72
	73	/*
	74	* The fat cache structure.
	75	* fc_fsrcn is the filesystem relative cluster number
	76	* that corresponds to the file relative cluster number
	77	* in this structure (fc_frcn).
	78	*/
	79	struct fatcache {
	80	u_short fc_frcn; /* file relative cluster number */
	81	u_short fc_fsrcn; /* filesystem relative cluster number */
	82	};
	83
	84	/*
	85	* The fat entry cache as it stands helps make extending
	86	* files a "quick" operation by avoiding having to scan
	87	* the fat to discover the last cluster of the file.
88	* The cache also helps sequential reads by remembering
89	* the last cluster read from the file. This also prevents
90	* us from having to rescan the fat to find the next cluster
91	* to read. This cache is probably pretty worthless if a
92	* file is opened by multiple processes.
93	*/
94	#define FC_SIZE 2 /* number of entries in the cache */
95	#define FC_LASTMAP 0 /* entry the last call to pcbmap() resolved to */
96	#define FC_LASTFC 1 /* entry for the last cluster in the file */
97
98	#define FCE_EMPTY 0xffff /* doesn't represent an actual cluster # */
99
100	/*
101	* Set a slot in the fat cache.
102	*/
103	#define fc_setcache(dep, slot, frcn, fsrcn) \
104	(dep)->de_fc[slot].fc_frcn = frcn; \
105	(dep)->de_fc[slot].fc_fsrcn = fsrcn;
106
107	/*
108	* This is the in memory variant of a dos directory
109	* entry. It is usually contained within a vnode.
110	*/
111	struct denode {
112	struct denode de_chain[2]; / hash chain ptrs */
113	struct vnode de_vnode; / addr of vnode we are part of */
114	struct vnode de_devvp; / vnode of blk dev we live on */
115	u_long de_flag; /* flag bits */
116	dev_t de_dev; /* device where direntry lives */
117	u_long de_dirclust; /* cluster of the directory file
118	* containing this entry */
119	u_long de_diroffset; /* ordinal of this entry in the
120	* directory */
121	long de_refcnt; /* reference count */
122	struct pcfsmount de_pmp; / addr of our mount struct */
123	struct lockf de_lockf; / byte level lock list */
124	long de_spare0; /* current lock holder */
125	long de_spare1; /* lock wanter */
126	struct direntry de_de; /* the actual directory entry */
127	struct fatcache de_fc[FC_SIZE]; /* fat cache */
128	};
129
130	/*
131	* Values for the de_flag field of the denode.
132	*/
133	#define DELOCKED 0x0001 /* directory entry is locked */
134	#define DEWANT 0x0002 /* someone wants this de */
135	#define DERENAME 0x0004 /* de is being renamed */
136	#define DEUPD 0x0008 /* file has been modified */
137	#define DESHLOCK 0x0010 /* file has shared lock */
138	#define DEEXLOCK 0x0020 /* file has exclusive lock */
139	#define DELWAIT 0x0040 /* someone waiting on file lock */
140	#define DEMOD 0x0080 /* denode wants to be written back
141	* to disk */
142
143	/*
144	* Shorthand macros used to reference fields in the direntry
145	* contained in the denode structure.
146	*/
147	#define de_Name de_de.deName
148	#define de_Extension de_de.deExtension
149	#define de_Attributes de_de.deAttributes
150	#define de_Reserved de_de.deReserved
151	#define de_Time de_de.deTime
152	#define de_Date de_de.deDate
153	#define de_StartCluster de_de.deStartCluster
154	#define de_FileSize de_de.deFileSize
155	#define de_forw de_chain[0]
156	#define de_back de_chain[1]
157
158	#if defined(KERNEL)
159
160	#define VTODE(vp) ((struct denode *)(vp)->v_data)
161	#define DETOV(de) ((de)->de_vnode)
162
163	#define DELOCK(de) delock(de)
fde1aeb2	164	extern void delock(struct denode *);
15637ed4	165	#define DEUNLOCK(de) deunlock(de)
fde1aeb2	166	extern void deunlock(struct denode *);
15637ed4 RG	167
	168	#define DEUPDAT(dep, t, waitfor) \
	169	if (dep->de_flag & DEUPD) \
	170	(void) deupdat(dep, t, waitfor);
	171
	172	#define DETIMES(dep, t) \
	173	if (dep->de_flag & DEUPD) { \
	174	(dep)->de_flag \|= DEMOD; \
	175	unix2dostime(t, (union dosdate *)&dep->de_Date, \
	176	(union dostime *)&dep->de_Time); \
	177	(dep)->de_flag &= ~DEUPD; \
	178	}
	179
	180	/*
	181	* This overlays the fid sturcture (see mount.h)
	182	*/
	183	struct defid {
	184	u_short defid_len; /* length of structure */
	185	u_short defid_pad; /* force long alignment */
	186
	187	u_long defid_dirclust; /* cluster this dir entry came from */
	188	u_long defid_dirofs; /* index of entry within the cluster */
	189
8183b32d	190	/* u_long defid_gen;/ / generation number */
15637ed4 RG	191	};
	192
	193	/*
	194	* Prototypes for PCFS vnode operations
	195	*/
	196	int pcfs_lookup __P((struct vnode vp, struct nameidata ndp, struct proc *p));
	197	int pcfs_create __P((struct nameidata ndp, struct vattr vap, struct proc *p));
	198	int pcfs_mknod __P((struct nameidata ndp, struct vattr vap, struct ucred *cred,
	199	struct proc *p));
	200	int pcfs_open __P((struct vnode vp, int mode, struct ucred cred,
	201	struct proc *p));
	202	int pcfs_close __P((struct vnode vp, int fflag, struct ucred cred,
	203	struct proc *p));
	204	int pcfs_access __P((struct vnode vp, int mode, struct ucred cred,
	205	struct proc *p));
	206	int pcfs_getattr __P((struct vnode vp, struct vattr vap, struct ucred *cred,
	207	struct proc *p));
	208	int pcfs_setattr __P((struct vnode vp, struct vattr vap, struct ucred *cred,
	209	struct proc *p));
	210	int pcfs_read __P((struct vnode vp, struct uio uio, int ioflag,
	211	struct ucred *cred));
	212	int pcfs_write __P((struct vnode vp, struct uio uio, int ioflag,
	213	struct ucred *cred));
	214	int pcfs_ioctl __P((struct vnode *vp, int command, caddr_t data, int fflag,
	215	struct ucred cred, struct proc p));
	216	int pcfs_select __P((struct vnode vp, int which, int fflags, struct ucred cred,
	217	struct proc *p));
	218	int pcfs_mmap __P((struct vnode vp, int fflags, struct ucred cred,
	219	struct proc *p));
	220	int pcfs_fsync __P((struct vnode vp, int fflags, struct ucred cred,
	221	int waitfor, struct proc *p));
	222	int pcfs_seek __P((struct vnode *vp, off_t oldoff, off_t newoff,
	223	struct ucred *cred));
	224	int pcfs_remove __P((struct nameidata ndp, struct proc p));
	225	int pcfs_link __P((struct vnode vp, struct nameidata ndp, struct proc *p));
	226	int pcfs_rename __P((struct nameidata fndp, struct nameidata tdnp,
	227	struct proc *p));
	228	int pcfs_mkdir __P((struct nameidata ndp, struct vattr vap, struct proc *p));
	229	int pcfs_rmdir __P((struct nameidata ndp, struct proc p));
	230	int pcfs_symlink __P((struct nameidata ndp, struct vattr vap, char *target,
	231	struct proc *p));
	232	int pcfs_readdir __P((struct vnode vp, struct uio uio, struct ucred *cred,
	233	int *eofflagp));
	234	int pcfs_readlink __P((struct vnode vp, struct uio uio, struct ucred *cred));
	235	int pcfs_abortop __P((struct nameidata *ndp));
	236	int pcfs_inactive __P((struct vnode vp, struct proc p));
	237	int pcfs_reclaim __P((struct vnode *vp));
	238	int pcfs_lock __P((struct vnode *vp));
	239	int pcfs_unlock __P((struct vnode *vp));
	240	int pcfs_bmap __P((struct vnode vp, daddr_t bn, struct vnode *vpp,
	241	daddr_t *bnp));
	242	int pcfs_strategy __P((struct buf *bp));
4c45483e	243	void pcfs_print __P((struct vnode *vp));
15637ed4 RG	244	int pcfs_islocked __P((struct vnode *vp));
	245	int pcfs_advlock __P((struct vnode vp, caddr_t id, int op, struct flock fl,
	246	int flags));
	247
	248	/*
	249	* Internal service routine prototypes.
	250	*/
	251	int deget __P((struct pcfsmount *pmp, u_long dirclust, u_long diroffset,
	252	struct direntry direntptr, struct denode *depp));
fde1aeb2 GW	253
	254	extern int pcbmap(struct denode , u_long, daddr_t , u_long *);
	255	extern void fc_purge(struct denode *, u_int);
	256	extern void updateotherfats(struct pcfsmount , struct buf , u_long);
	257	extern int clusterfree(struct pcfsmount , u_long, u_long );
	258	extern int fatentry(int, struct pcfsmount , u_long, u_long , u_long);
	259	extern int clusteralloc(struct pcfsmount , u_long , u_long);
	260	extern int freeclusterchain(struct pcfsmount *, u_long);
	261	extern int fillinusemap(struct pcfsmount *);
	262	extern int extendfile(struct denode , struct buf , u_int );
	263	extern int readep(struct pcfsmount , u_long, u_long, struct buf *,
	264	struct direntry **);
	265	extern int readde(struct denode , struct buf , struct direntry *);
	266	extern int doscheckpath(struct denode , struct denode );
	267	extern int dosdirempty(struct denode *);
	268	extern int removede(struct nameidata *);
	269	extern int markdeleted(struct pcfsmount *, u_long, u_long);
	270	extern int createde(struct denode , struct nameidata , struct denode **);
	271	extern int pcfs_lookup(struct vnode , struct nameidata , struct proc *);
	272
	273	extern void pcfs_init(void);
	274	extern void deput(struct denode *);
	275	extern int deupdat(struct denode , struct timeval , int);
	276	extern int detrunc(struct denode *, u_long, int);
	277	extern void reinsert(struct denode *);
	278	extern int pcfs_reclaim(struct vnode *);
	279	extern int pcfs_inactive(struct vnode , struct proc );
	280
	281
15637ed4	282	#endif /* defined(KERNEL) */
bbc3f849	283	#endif /* _PCFS_DENODE_H_ */