xnu-3789.1.32.tar.gz

[apple/xnu.git] / bsd / miscfs / union / union.h

diff --git a/bsd/miscfs/union/union.h b/bsd/miscfs/union/union.h
index 147df4c7f0c1cbf946be31d52c11f90055eaaa71..eee3e5a87f8ccc30b807136ab5fe2706185d2e0e 100644 (file)
--- a/bsd/miscfs/union/union.h
+++ b/bsd/miscfs/union/union.h
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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.
+ * 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. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*


@@ -61,99 +67,5 @@
 #ifndef __UNION_UNION_H__
 #define __UNION_UNION_H__
 
 #ifndef __UNION_UNION_H__
 #define __UNION_UNION_H__
 

-#include  <sys/appleapiopts.h>
-
-#ifdef __APPLE_API_PRIVATE
-struct union_args {
-       char            *target;        /* Target of loopback  */
-       int             mntflags;       /* Options on the mount */
-};
-
-#define UNMNT_ABOVE    0x0001          /* Target appears below mount point */
-#define UNMNT_BELOW    0x0002          /* Target appears below mount point */
-#define UNMNT_REPLACE  0x0003          /* Target replaces mount point */
-#define UNMNT_OPMASK   0x0003
-
-struct union_mount {
-       struct vnode    *um_uppervp;
-       struct vnode    *um_lowervp;
-       struct ucred    *um_cred;       /* Credentials of user calling mount */
-       int             um_cmode;       /* cmask from mount process */
-       int             um_op;          /* Operation mode */
-};
-
-#ifdef KERNEL
-
-/*
- * DEFDIRMODE is the mode bits used to create a shadow directory.
- */
-#define VRWXMODE (VREAD|VWRITE|VEXEC)
-#define VRWMODE (VREAD|VWRITE)
-#define UN_DIRMODE ((VRWXMODE)|(VRWXMODE>>3)|(VRWXMODE>>6))
-#define UN_FILEMODE ((VRWMODE)|(VRWMODE>>3)|(VRWMODE>>6))
-
-/*
- * A cache of vnode references
- */
-struct union_node {
-       LIST_ENTRY(union_node)  un_cache;       /* Hash chain */
-       struct vnode            *un_vnode;      /* Back pointer */
-       struct vnode            *un_uppervp;    /* overlaying object */
-       struct vnode            *un_lowervp;    /* underlying object */
-       struct vnode            *un_dirvp;      /* Parent dir of uppervp */
-       struct vnode            *un_pvp;        /* Parent vnode */
-       char                    *un_path;       /* saved component name */
-       int                     un_hash;        /* saved un_path hash value */
-       int                     un_openl;       /* # of opens on lowervp */
-       unsigned int            un_flags;
-       struct vnode            **un_dircache;  /* cached union stack */
-       off_t                   un_uppersz;     /* size of upper object */
-       off_t                   un_lowersz;     /* size of lower object */
-#if DIAGNOSTIC
-       pid_t                   un_pid;
-#endif
-};
-
-#define UN_WANT                0x01
-#define UN_LOCKED      0x02
-#define UN_ULOCK       0x04            /* Upper node is locked */
-#define UN_KLOCK       0x08            /* Keep upper node locked on vput */
-#define UN_CACHED      0x10            /* In union cache */
-
-extern int union_allocvp __P((struct vnode **, struct mount *,
-                               struct vnode *, struct vnode *,
-                               struct componentname *, struct vnode *,
-                               struct vnode *, int));
-extern int union_copyfile __P((struct vnode *, struct vnode *,
-                                       struct ucred *, struct proc *));
-extern int union_copyup __P((struct union_node *, int, struct ucred *,
-                               struct proc *));
-extern int union_dowhiteout __P((struct union_node *, struct ucred *,
-                                       struct proc *));
-extern int union_mkshadow __P((struct union_mount *, struct vnode *,
-                               struct componentname *, struct vnode **));
-extern int union_mkwhiteout __P((struct union_mount *, struct vnode *,
-                               struct componentname *, char *));
-extern int union_vn_create __P((struct vnode **, struct union_node *,
-                               struct proc *));
-extern int union_cn_close __P((struct vnode *, int, struct ucred *,
-                               struct proc *));
-extern void union_removed_upper __P((struct union_node *un));
-extern struct vnode *union_lowervp __P((struct vnode *));
-extern void union_newlower __P((struct union_node *, struct vnode *));
-extern void union_newupper __P((struct union_node *, struct vnode *));
-extern void union_newsize __P((struct vnode *, off_t, off_t));
-
-#define        MOUNTTOUNIONMOUNT(mp) ((struct union_mount *)((mp)->mnt_data))
-#define        VTOUNION(vp) ((struct union_node *)(vp)->v_data)
-#define        UNIONTOV(un) ((un)->un_vnode)
-#define        LOWERVP(vp) (VTOUNION(vp)->un_lowervp)
-#define        UPPERVP(vp) (VTOUNION(vp)->un_uppervp)
-#define OTHERVP(vp) (UPPERVP(vp) ? UPPERVP(vp) : LOWERVP(vp))
-
-extern int (**union_vnodeop_p)(void *);
-extern struct vfsops union_vfsops;
-#endif /* KERNEL */

 
 

-#endif /* __APPLE_API_PRIVATE */

 #endif /* __UNION_UNION_H__ */
 #endif /* __UNION_UNION_H__ */