xnu-4570.71.2.tar.gz

[apple/xnu.git] / bsd / miscfs / specfs / specdev.h

diff --git a/bsd/miscfs/specfs/specdev.h b/bsd/miscfs/specfs/specdev.h
index 6cfdead57321ce0cd38431bd42f6c8b02c7c8ede..3d6d0258f5319978122d5387436006f0a02eb0fa 100644 (file)
--- a/bsd/miscfs/specfs/specdev.h
+++ b/bsd/miscfs/specfs/specdev.h
@@ -1,31 +1,29 @@
 /*
- * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
+ * 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 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.
- *
- * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
- * Please see the License for the specific language governing rights and 
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
  * limitations under the License.
- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * Copyright (c) 1995, 1998 Apple Computer, Inc. All Rights Reserved.
@@ -81,9 +79,16 @@ struct specinfo {
        struct  vnode *si_specnext;
        long    si_flags;
        dev_t   si_rdev;
+       int32_t si_opencount;
        daddr_t si_size;                /* device block size in bytes */
        daddr64_t       si_lastr;       /* last read blkno (read-ahead) */
        u_int64_t       si_devsize;     /* actual device size in bytes */
+
+       u_int8_t        si_initted;
+       u_int8_t        si_throttleable;
+       u_int16_t       si_isssd;
+       u_int32_t       si_devbsdunit;
+       u_int64_t       si_throttle_mask;
 };
 /*
  * Exported shorthand
@@ -100,15 +105,16 @@ struct specinfo {
  * Flags for specinfo
  */
 #define        SI_MOUNTEDON    0x0001  /* block special device is mounted on */
+#define SI_ALIASED     0x0002  /* multiple active vnodes refer to this device */
 
 /*
  * Special device management
  */
 #define        SPECHSZ 64
 #if    ((SPECHSZ&(SPECHSZ-1)) == 0)
-#define        SPECHASH(rdev)  (((rdev>>5)+(rdev))&(SPECHSZ-1))
+#define        SPECHASH(rdev)  (((rdev>>21)+(rdev))&(SPECHSZ-1))
 #else
-#define        SPECHASH(rdev)  (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
+#define        SPECHASH(rdev)  (((unsigned)((rdev>>21)+(rdev)))%SPECHSZ)
 #endif
 
 extern struct vnode *speclisth[SPECHSZ];
@@ -119,11 +125,19 @@ extern struct vnode *speclisth[SPECHSZ];
 extern int (**spec_vnodeop_p)(void *);
 struct nameidata;
 struct componentname;
-struct ucred;
 struct flock;
 struct buf;
 struct uio;
 
+__BEGIN_DECLS
+#ifdef BSD_KERNEL_PRIVATE
+int spec_blktooff (struct  vnop_blktooff_args *);
+int spec_offtoblk (struct  vnop_offtoblk_args *);
+int    spec_fsync_internal (vnode_t, int, vfs_context_t);
+int spec_blockmap (struct  vnop_blockmap_args *);
+int spec_kqfilter (vnode_t vp, struct knote *kn, struct kevent_internal_s *kev);
+#endif /* BSD_KERNEL_PRIVATE */
+
 int    spec_ebadf(void *);
 
 int    spec_lookup (struct vnop_lookup_args *);
@@ -141,7 +155,6 @@ int spec_select (struct vnop_select_args *);
 #define spec_revoke (int (*) (struct  vnop_access_args *))nop_revoke
 #define spec_mmap (int (*) (struct  vnop_access_args *))err_mmap
 int    spec_fsync (struct  vnop_fsync_args *);
-int    spec_fsync_internal (vnode_t, int, vfs_context_t);
 #define spec_remove (int (*) (struct  vnop_access_args *))err_remove
 #define spec_link (int (*) (struct  vnop_access_args *))err_link
 #define spec_rename (int (*) (struct  vnop_access_args *))err_rename
@@ -162,10 +175,7 @@ int        spec_pathconf (struct vnop_pathconf_args *);
 #define spec_valloc (int (*) (struct  vnop_access_args *))err_valloc
 #define spec_vfree (int (*) (struct  vnop_access_args *))err_vfree
 #define spec_bwrite (int (*) (struct  vnop_bwrite_args *))nop_bwrite
-int     spec_devblocksize (struct vnop_devblocksize_args *);
-int spec_blktooff (struct  vnop_blktooff_args *);
-int spec_offtoblk (struct  vnop_offtoblk_args *);
-int spec_blockmap (struct  vnop_blockmap_args *);
+__END_DECLS
 
 #endif /* __APPLE_API_PRIVATE */
 #endif /* _MISCFS_SPECFS_SPECDEV_H_ */