xnu-6153.61.1.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 9cab49b4766eab4a705c30edda2b78679b0de206..3a4b2aa5ca5b8ac0bc8e23ef0230fd7723d475f6 100644 (file)
--- a/bsd/miscfs/specfs/specdev.h
+++ b/bsd/miscfs/specfs/specdev.h
@@ -2,7 +2,7 @@
  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_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
  * 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


@@ -11,10 +11,10 @@
  * 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.
  * 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.
  * 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,
  * 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,


@@ -22,7 +22,7 @@
  * 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.
  * 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_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*


@@ -75,13 +75,20 @@
  * in vgone.
  */
 struct specinfo {
  * in vgone.
  */
 struct specinfo {

-       struct  vnode **si_hashchain;
-       struct  vnode *si_specnext;
-       long    si_flags;
-       dev_t   si_rdev;
-       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 */
+       struct  vnode **si_hashchain;
+       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
 };
 /*
  * Exported shorthand


@@ -97,16 +104,17 @@ struct specinfo {
 /*
  * Flags for specinfo
  */
 /*
  * Flags for specinfo
  */

-#define        SI_MOUNTEDON    0x0001  /* block special device is mounted on */
+#define SI_MOUNTEDON    0x0001  /* block special device is mounted on */
+#define SI_ALIASED      0x0002  /* multiple active vnodes refer to this device */

 
 /*
  * Special device management
  */
 
 /*
  * Special device management
  */

-#define        SPECHSZ 64
-#if    ((SPECHSZ&(SPECHSZ-1)) == 0)
-#define        SPECHASH(rdev)  (((rdev>>5)+(rdev))&(SPECHSZ-1))
+#define SPECHSZ 64
+#if     ((SPECHSZ & (SPECHSZ - 1)) == 0)
+#define SPECHASH(rdev)  (((rdev>>21)+(rdev))&(SPECHSZ-1))

 #else
 #else

-#define        SPECHASH(rdev)  (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
+#define SPECHASH(rdev)  (((unsigned)((rdev>>21)+(rdev)))%SPECHSZ)

 #endif
 
 extern struct vnode *speclisth[SPECHSZ];
 #endif
 
 extern struct vnode *speclisth[SPECHSZ];


@@ -114,32 +122,39 @@ extern struct vnode *speclisth[SPECHSZ];
 /*
  * Prototypes for special file operations on vnodes.
  */
 /*
  * Prototypes for special file operations on vnodes.
  */

-extern int (**spec_vnodeop_p)(void *);
-struct nameidata;
-struct componentname;
-struct ucred;
-struct flock;
-struct buf;
-struct uio;
+extern  int(**spec_vnodeop_p)(void *);
+struct  nameidata;
+struct  componentname;
+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_qos_s *kev);
+#endif /* BSD_KERNEL_PRIVATE */

 
 

-int    spec_ebadf(void *);
+int     spec_ebadf(void *);

 
 

-int    spec_lookup (struct vnop_lookup_args *);
+int     spec_lookup(struct vnop_lookup_args *);

 #define spec_create (int (*) (struct  vnop_access_args *))err_create
 #define spec_mknod (int (*) (struct  vnop_access_args *))err_mknod
 #define spec_create (int (*) (struct  vnop_access_args *))err_create
 #define spec_mknod (int (*) (struct  vnop_access_args *))err_mknod

-int    spec_open (struct vnop_open_args *);
-int    spec_close (struct vnop_close_args *);
+int     spec_open(struct vnop_open_args *);
+int     spec_close(struct vnop_close_args *);

 #define spec_access (int (*) (struct  vnop_access_args *))spec_ebadf
 #define spec_getattr (int (*) (struct  vnop_getattr_args *))spec_ebadf
 #define spec_setattr (int (*) (struct  vnop_setattr_args *))spec_ebadf
 #define spec_access (int (*) (struct  vnop_access_args *))spec_ebadf
 #define spec_getattr (int (*) (struct  vnop_getattr_args *))spec_ebadf
 #define spec_setattr (int (*) (struct  vnop_setattr_args *))spec_ebadf

-int    spec_read (struct vnop_read_args *);
-int    spec_write (struct vnop_write_args *);
-int    spec_ioctl (struct vnop_ioctl_args *);
-int    spec_select (struct vnop_select_args *);
+int     spec_read(struct vnop_read_args *);
+int     spec_write(struct vnop_write_args *);
+int     spec_ioctl(struct vnop_ioctl_args *);
+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
 #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);
+int     spec_fsync(struct  vnop_fsync_args *);

 #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
 #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


@@ -152,18 +167,15 @@ int       spec_fsync_internal (vnode_t, int, vfs_context_t);
 #define spec_reclaim (int (*) (struct  vnop_access_args *))nop_reclaim
 #define spec_lock (int (*) (struct  vnop_access_args *))nop_lock
 #define spec_unlock (int (*)(struct  vnop_access_args *))nop_unlock
 #define spec_reclaim (int (*) (struct  vnop_access_args *))nop_reclaim
 #define spec_lock (int (*) (struct  vnop_access_args *))nop_lock
 #define spec_unlock (int (*)(struct  vnop_access_args *))nop_unlock

-int    spec_strategy (struct vnop_strategy_args *);
+int     spec_strategy(struct vnop_strategy_args *);

 #define spec_islocked (int (*) (struct  vnop_access_args *))nop_islocked
 #define spec_islocked (int (*) (struct  vnop_access_args *))nop_islocked

-int    spec_pathconf (struct vnop_pathconf_args *);
+int     spec_pathconf(struct vnop_pathconf_args *);

 #define spec_advlock (int (*) (struct  vnop_access_args *))err_advlock
 #define spec_blkatoff (int (*) (struct  vnop_access_args *))err_blkatoff
 #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
 #define spec_advlock (int (*) (struct  vnop_access_args *))err_advlock
 #define spec_blkatoff (int (*) (struct  vnop_access_args *))err_blkatoff
 #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_ */
 
 #endif /* __APPLE_API_PRIVATE */
 #endif /* _MISCFS_SPECFS_SPECDEV_H_ */