/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef _VNODE_H_
#define _VNODE_H_
+#include <sys/appleapiopts.h>
#include <sys/cdefs.h>
#include <sys/queue.h>
#include <sys/lock.h>
#ifdef KERNEL
#include <sys/systm.h>
#include <vm/vm_pageout.h>
-#endif
+#endif /* KERNEL */
+#ifdef __APPLE_API_PRIVATE
/*
* The vnode is the focus of all file activity in UNIX. There is a
* unique vnode allocated for each active file, each current directory,
*/
LIST_HEAD(buflists, buf);
+#define MAX_CLUSTERS 4 /* maximum number of vfs clusters per vnode */
+
+struct v_cluster {
+ unsigned int start_pg;
+ unsigned int last_pg;
+};
+
+struct v_padded_clusters {
+ long v_pad;
+ struct v_cluster v_c[MAX_CLUSTERS];
+};
+
/*
* Reading or writing any of these items requires holding the appropriate lock.
* v_freelist is locked by the global vnode_free_list simple lock.
* v_mntvnodes is locked by the global mntvnodes simple lock.
* v_flag, v_usecount, v_holdcount and v_writecount are
- * locked by the v_interlock simple lock.
+ * locked by the v_interlock simple lock.
*/
struct vnode {
u_long v_flag; /* vnode flags (see below) */
struct socket *vu_socket; /* unix ipc (VSOCK) */
struct specinfo *vu_specinfo; /* device (VCHR, VBLK) */
struct fifoinfo *vu_fifoinfo; /* fifo (VFIFO) */
+ char *vu_name; /* name (only for VREG) */
} v_un;
struct ubc_info *v_ubcinfo; /* valid for (VREG) */
struct nqlease *v_lease; /* Soft reference to lease */
- daddr_t v_lastw; /* last write (write cluster) */
- daddr_t v_cstart; /* start block of cluster */
+ void *v_scmap; /* pointer to sparse cluster map */
+ int v_scdirty; /* number of dirty pages in the sparse cluster map */
daddr_t v_ciosiz; /* real size of I/O for cluster */
int v_clen; /* length of current cluster */
int v_ralen; /* Read-ahead length */
daddr_t v_maxra; /* last readahead block */
- simple_lock_data_t v_interlock; /* lock on usecount and flag */
+ union {
+ simple_lock_data_t v_ilk; /* lock on usecount and flag */
+ struct v_padded_clusters v_cl; /* vfs cluster IO */
+ } v_un1;
+#define v_clusters v_un1.v_cl.v_c
+#define v_interlock v_un1.v_ilk
+
struct lock__bsd__ *v_vnlock; /* used for non-locking fs's */
long v_writecount; /* reference count of writers */
enum vtagtype v_tag; /* type of underlying data */
#define v_specinfo v_un.vu_specinfo
#define v_fifoinfo v_un.vu_fifoinfo
+// NOTE: Do not use these macros. They are for vfs internal use only.
+#define VNAME(vp) ((char *)((vp)->v_type == VREG ? (vp)->v_un.vu_name : (vp)->v_scmap))
+#define VPARENT(vp) ((struct vnode *)((vp)->v_type == VREG ? (vp)->v_un1.v_cl.v_pad : (vp)->v_scdirty))
+
+
/*
* Vnode flags.
*/
#define VHASDIRTY 0x100000 /* UBC vnode may have 1 or more */
/* delayed dirty pages that need to be flushed at the next 'sync' */
#define VSWAP 0x200000 /* vnode is being used as swapfile */
-#define VTHROTTLED 0x400000 /* writes or pageouts have been throttled */
- /* wakeup tasks waiting when count falls below threshold */
+#define VTHROTTLED 0x400000 /* writes or pageouts have been throttled */
+ /* wakeup tasks waiting when count falls below threshold */
+#define VNOFLUSH 0x800000 /* don't vflush() if SKIPSYSTEM */
+#define VDELETED 0x1000000 /* this vnode is being deleted */
+#define VFULLFSYNC 0x2000000 /* ask the drive to write the data to the media */
+#define VHASBEENPAGED 0x4000000 /* vnode has been recently paged to */
/*
* Vnode attributes. A field value of VNOVAL represents a field whose value
#define IO_SYNC 0x04 /* do I/O synchronously */
#define IO_NODELOCKED 0x08 /* underlying node already locked */
#define IO_NDELAY 0x10 /* FNDELAY flag set in file table */
-#define IO_NOZEROFILL 0x20 /* F_SETSIZE fcntl uses to prevent zero filling */
-#define IO_TAILZEROFILL 0x40 /* zero fills at the tail of write */
-#define IO_HEADZEROFILL 0x80 /* zero fills at the head of write */
-#define IO_NOZEROVALID 0x100 /* do not zero fill if valid page */
+#define IO_NOZEROFILL 0x20 /* F_SETSIZE fcntl uses to prevent zero filling */
+#define IO_TAILZEROFILL 0x40 /* zero fills at the tail of write */
+#define IO_HEADZEROFILL 0x80 /* zero fills at the head of write */
+#define IO_NOZEROVALID 0x100 /* do not zero fill if valid page */
+#define IO_NOZERODIRTY 0x200 /* do not zero fill if page is dirty */
/*
* Modes. Some values same as Ixxx entries from inode.h for now.
*/
#define LEASE_READ 0x1 /* Check lease for readers */
#define LEASE_WRITE 0x2 /* Check lease for modifiers */
-
#endif /* KERNEL */
/*
caddr_t *vdesc_transports;
};
+#endif /* __APPLE_API_PRIVATE */
+
#ifdef KERNEL
+
+#ifdef __APPLE_API_PRIVATE
/*
* A list of all the operation descs.
*/
#define VDESC(OP) (& __CONCAT(OP,_desc))
#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
+#endif /* __APPLE_API_PRIVATE */
+
/*
* Finally, include the default set of vnode operations.
*/
#include <sys/vnode_if.h>
/*
- * Public vnode manipulation functions.
+ * vnode manipulation functions.
*/
struct file;
struct mount;
struct vnode;
struct vop_bwrite_args;
+#ifdef __APPLE_API_EVOLVING
int bdevvp __P((dev_t dev, struct vnode **vpp));
void cvtstat __P((struct stat *st, struct ostat *ost));
int getnewvnode __P((enum vtagtype tag,
int vn_bwrite __P((struct vop_bwrite_args *ap));
int vn_close __P((struct vnode *vp,
int flags, struct ucred *cred, struct proc *p));
-int vn_closefile __P((struct file *fp, struct proc *p));
-int vn_ioctl __P((struct file *fp, u_long com, caddr_t data,
- struct proc *p));
int vn_lock __P((struct vnode *vp, int flags, struct proc *p));
int vn_open __P((struct nameidata *ndp, int fmode, int cmode));
+#ifndef __APPLE_API_PRIVATE
+__private_extern__ int
+ vn_open_modflags __P((struct nameidata *ndp, int *fmode, int cmode));
+#endif /* __APPLE_API_PRIVATE */
int vn_rdwr __P((enum uio_rw rw, struct vnode *vp, caddr_t base,
int len, off_t offset, enum uio_seg segflg, int ioflg,
struct ucred *cred, int *aresid, struct proc *p));
-int vn_read __P((struct file *fp, struct uio *uio, struct ucred *cred));
-int vn_select __P((struct file *fp, int which, void * wql, struct proc *p));
int vn_stat __P((struct vnode *vp, struct stat *sb, struct proc *p));
-int vn_write __P((struct file *fp, struct uio *uio, struct ucred *cred));
int vop_noislocked __P((struct vop_islocked_args *));
int vop_nolock __P((struct vop_lock_args *));
int vop_nounlock __P((struct vop_unlock_args *));
int vaccess __P((mode_t file_mode, uid_t uid, gid_t gid,
mode_t acc_mode, struct ucred *cred));
int getvnode __P((struct proc *p, int fd, struct file **fpp));
+#endif /* __APPLE_API_EVOLVING */
#endif /* KERNEL */
projects / apple / xnu.git / blobdiff