xnu-3789.51.2.tar.gz

[apple/xnu.git] / bsd / sys / ubc.h

diff --git a/bsd/sys/ubc.h b/bsd/sys/ubc.h
index eed260077a52f6df4e38709b80827d71142bfc1b..278c8488932a8a30a44c575f0d8e696b3d567416 100644 (file)
--- a/bsd/sys/ubc.h
+++ b/bsd/sys/ubc.h
@@ -1,16 +1,19 @@
 /*
 /*

- * Copyright (c) 1999, 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2007 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 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

- * 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.
+ * 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
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER


@@ -20,13 +23,9 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 

- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /* 
  */
 /* 

- *     File:   ubc.h
- *     Author: Umesh Vaishampayan [umeshv@apple.com]
- *             05-Aug-1999     umeshv  Created.
- *

  *     Header file for Unified Buffer Cache.
  *
  */ 
  *     Header file for Unified Buffer Cache.
  *
  */ 


@@ -35,141 +34,127 @@
 #define        _SYS_UBC_H_
 
 #include <sys/appleapiopts.h>
 #define        _SYS_UBC_H_
 
 #include <sys/appleapiopts.h>

-#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <sys/kernel_types.h>
+#include <kern/locks.h>
+#include <mach/memory_object_types.h>

 #include <sys/ucred.h>
 #include <sys/ucred.h>

-#include <sys/vnode.h>

 
 

-#include <sys/cdefs.h>
+#ifdef KERNEL_PRIVATE
+#include <sys/imgact.h>
+#endif // KERNEL_PRIVATE

 
 

-#include <mach/memory_object_types.h>
+/* defns for ubc_msync() and ubc_msync */

 
 

-#define UBC_INFO_NULL  ((struct ubc_info *) 0)
-#define UBC_NOINFO             ((struct ubc_info *)0xDEADD1ED)
+#define        UBC_PUSHDIRTY   0x01    /* clean any dirty pages in the specified range to the backing store */
+#define        UBC_PUSHALL     0x02    /* push both dirty and precious pages to the backing store */
+#define        UBC_INVALIDATE  0x04    /* invalidate pages in the specified range... may be used with UBC_PUSHDIRTY/ALL */
+#define        UBC_SYNC        0x08    /* wait for I/Os generated by UBC_PUSHDIRTY to complete */

 
 

-#ifdef __APPLE_API_PRIVATE
-extern struct zone     *ubc_info_zone;
+__BEGIN_DECLS

 
 

-/*
- *     The following data structure keeps the information to associate
- *     a vnode to the correspondig VM objects.
- */
+off_t          ubc_blktooff(struct vnode *, daddr64_t);
+daddr64_t      ubc_offtoblk(struct vnode *, off_t);
+off_t  ubc_getsize(struct vnode *);
+int    ubc_setsize(struct vnode *, off_t);

 
 

-struct ubc_info {
-       memory_object_t                 ui_pager;       /* pager */
-       memory_object_control_t ui_control;     /* VM control for the pager */
-       long                                    ui_flags;       /* flags */
-       struct vnode                    *ui_vnode;      /* The vnode for this ubc_info */
-       struct ucred                    *ui_ucred;      /* holds credentials for NFS paging */
-       int                                             ui_refcount;/* ref count on the ubc_info */
-       off_t                                   ui_size;        /* file size for the vnode */
-       long                                    ui_mapped;      /* is it currently mapped */
-       void                                    *ui_owner;      /* for recursive ubc_busy */
+#ifdef KERNEL_PRIVATE
+
+enum {
+       UBC_SETSIZE_NO_FS_REENTRY = 1

 };
 };

+typedef uint32_t ubc_setsize_opts_t;

 
 

-/* Defines for ui_flags */
-#define        UI_NONE                 0x00000000              /* none */
-#define        UI_HASPAGER             0x00000001              /* has a pager associated */
-#define        UI_INITED               0x00000002              /* newly initialized vnode */
-#define UI_HASOBJREF   0x00000004              /* hold a reference on object */
-#define UI_WASMAPPED   0x00000008              /* vnode was mapped */
-#define        UI_DONTCACHE    0x00000010              /* do not cache object */
-#define        UI_BUSY                 0x00000020              /* for VM synchronization */
-#define        UI_WANTED               0x00000040              /* for VM synchronization */
+errno_t ubc_setsize_ex(vnode_t vp, off_t nsize, ubc_setsize_opts_t opts);

 
 

-#endif /* __APPLE_API_PRIVATE */
+#endif // KERNEL_PRIVATE

 
 

-#ifdef __APPLE_API_EVOLVING
-/*
- * exported primitives for loadable file systems.
- */
+kauth_cred_t ubc_getcred(struct vnode *);
+struct thread;
+int    ubc_setthreadcred(struct vnode *, struct proc *, struct thread *);

 
 

-__BEGIN_DECLS
-int    ubc_info_init __P((struct vnode *));
-void   ubc_info_deallocate  __P((struct ubc_info *));
-int    ubc_setsize __P((struct vnode *, off_t));
-off_t  ubc_getsize __P((struct vnode *));
-int    ubc_uncache __P((struct vnode *));
-int    ubc_umount __P((struct mount *));
-void   ubc_unmountall __P(());
-int    ubc_setcred __P((struct vnode *, struct proc *));
-struct ucred *ubc_getcred __P((struct vnode *));
-memory_object_t ubc_getpager __P((struct vnode *));
-memory_object_control_t ubc_getobject __P((struct vnode *, int));
-int ubc_setpager __P((struct vnode *, memory_object_t));
-int ubc_setflags __P((struct vnode *, int));
-int ubc_clearflags __P((struct vnode *, int));
-int ubc_issetflags __P((struct vnode *, int));
-off_t ubc_blktooff __P((struct vnode *, daddr_t));
-daddr_t ubc_offtoblk __P((struct vnode *, off_t));
-int ubc_clean __P((struct vnode *, int));
-int    ubc_pushdirty __P((struct vnode *));
-int    ubc_pushdirty_range __P((struct vnode *, off_t, off_t));
-int ubc_hold __P((struct vnode *));
-void ubc_rele __P((struct vnode *));
-void ubc_map __P((struct vnode *));
-int    ubc_destroy_named __P((struct vnode *));
-int    ubc_release_named __P((struct vnode *));
-int    ubc_invalidate __P((struct vnode *, off_t, size_t));
-int    ubc_isinuse __P((struct vnode *, int));
-
-int    ubc_page_op __P((struct vnode *, off_t, int, ppnum_t *, int *));
+errno_t ubc_msync(vnode_t, off_t, off_t, off_t *, int);
+int    ubc_pages_resident(vnode_t);
+int    ubc_page_op(vnode_t, off_t, int, ppnum_t *, int *);
+int    ubc_range_op(vnode_t, off_t, off_t, int, int *);
+
+#ifdef KERNEL_PRIVATE
+/* This API continues to exist only until <rdar://4714366> is resolved */
+int    ubc_setcred(struct vnode *, struct proc *) __deprecated;
+/* code signing */
+struct cs_blob;
+struct cs_blob *ubc_cs_blob_get(vnode_t, cpu_type_t, off_t);
+
+/* apis to handle generation count for cs blob */
+void cs_blob_reset_cache(void);
+int ubc_cs_blob_revalidate(vnode_t, struct cs_blob *, struct image_params *, int);
+int ubc_cs_generation_check(vnode_t);
+
+int cs_entitlements_blob_get(proc_t, void **, size_t *);
+int cs_blob_get(proc_t, void **, size_t *);
+const char *cs_identity_get(proc_t);
+
+#endif

 
 /* cluster IO routines */
 
 /* cluster IO routines */

-int    cluster_read __P((struct vnode *, struct uio *, off_t, int, int));
-int    advisory_read __P((struct vnode *, off_t, off_t, int, int));
-int    cluster_write __P((struct vnode *, struct uio*, off_t, off_t,
-               off_t, off_t,  int, int));
-int    cluster_push __P((struct vnode *));
-int    cluster_release __P((struct vnode *));
-int    cluster_pageout __P((struct vnode *, upl_t, vm_offset_t, off_t, int,
-               off_t, int, int));
-int    cluster_pagein __P((struct vnode *, upl_t, vm_offset_t, off_t, int,
-               off_t, int, int));
-int    cluster_bp __P((struct buf *));
-int    cluster_copy_upl_data __P((struct uio *, upl_t, int, int));
-int    cluster_copy_ubc_data __P((struct vnode *, struct uio *, int *, int));
+int    advisory_read(vnode_t, off_t, off_t, int);
+int    advisory_read_ext(vnode_t, off_t, off_t, int, int (*)(buf_t, void *), void *, int);
+
+int    cluster_read(vnode_t, struct uio *, off_t, int);
+int    cluster_read_ext(vnode_t, struct uio *, off_t, int, int (*)(buf_t, void *), void *);
+
+int    cluster_write(vnode_t, struct uio *, off_t, off_t, off_t, off_t, int);
+int    cluster_write_ext(vnode_t, struct uio *, off_t, off_t, off_t, off_t, int, int (*)(buf_t, void *), void *);
+
+int    cluster_pageout(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int);
+int    cluster_pageout_ext(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int, int (*)(buf_t, void *), void *);
+
+int    cluster_pagein(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int);
+int    cluster_pagein_ext(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int, int (*)(buf_t, void *), void *);
+
+int    cluster_push(vnode_t, int);
+int    cluster_push_ext(vnode_t, int, int (*)(buf_t, void *), void *);
+int    cluster_push_err(vnode_t, int, int (*)(buf_t, void *), void *, int *);
+
+int    cluster_bp(buf_t);
+int    cluster_bp_ext(buf_t, int (*)(buf_t, void *), void *);
+
+void   cluster_zero(upl_t, upl_offset_t, int, buf_t);
+
+int    cluster_copy_upl_data(uio_t, upl_t, int, int *);
+int    cluster_copy_ubc_data(vnode_t, uio_t, int *, int);
+
+typedef struct cl_direct_read_lock cl_direct_read_lock_t;
+cl_direct_read_lock_t *cluster_lock_direct_read(vnode_t vp, lck_rw_type_t exclusive);
+void cluster_unlock_direct_read(cl_direct_read_lock_t *lck);

 
 /* UPL routines */
 
 /* UPL routines */

-int    ubc_create_upl __P((struct vnode *, off_t, long, upl_t *,
-               upl_page_info_t **, int));
-int ubc_upl_map __P((upl_t, vm_offset_t *));
-int ubc_upl_unmap __P((upl_t));
-int ubc_upl_commit __P((upl_t));
-int ubc_upl_commit_range __P((upl_t, vm_offset_t, vm_size_t, int));
-int ubc_upl_abort __P((upl_t, int));
-int ubc_upl_abort_range __P((upl_t, vm_offset_t, vm_size_t, int));
-upl_page_info_t *ubc_upl_pageinfo __P((upl_t));
-__END_DECLS
+int    ubc_create_upl(vnode_t, off_t, int, upl_t *, upl_page_info_t **, int);
+int    ubc_upl_map(upl_t, vm_offset_t *);
+int    ubc_upl_unmap(upl_t);
+int    ubc_upl_commit(upl_t);
+int    ubc_upl_commit_range(upl_t, upl_offset_t, upl_size_t, int);
+int    ubc_upl_abort(upl_t, int);
+int    ubc_upl_abort_range(upl_t, upl_offset_t, upl_size_t, int);
+void   ubc_upl_range_needed(upl_t, int, int);

 
 

-#define UBCINFOMISSING(vp) \
-       ((vp) && ((vp)->v_type == VREG) && ((vp)->v_ubcinfo == UBC_INFO_NULL))
+upl_page_info_t *ubc_upl_pageinfo(upl_t);
+upl_size_t ubc_upl_maxbufsize(void);

 
 

-#define UBCINFORECLAIMED(vp) \
-       ((vp) && ((vp)->v_type == VREG) && ((vp)->v_ubcinfo == UBC_NOINFO))
+int    is_file_clean(vnode_t, off_t);

 
 

-#define UBCINFOEXISTS(vp) \
-       ((vp) && ((vp)->v_type == VREG) && \
-               ((vp)->v_ubcinfo) && ((vp)->v_ubcinfo != UBC_NOINFO))
+errno_t mach_to_bsd_errno(kern_return_t mach_err);

 
 

-#define UBCISVALID(vp) \
-       ((vp) && ((vp)->v_type == VREG) && !((vp)->v_flag & VSYSTEM))
+#ifdef KERNEL_PRIVATE

 
 

-#define UBCINVALID(vp) \
-       (((vp) == NULL) || ((vp) && ((vp)->v_type != VREG))     \
-               || ((vp) && ((vp)->v_flag & VSYSTEM)))
+__attribute__((pure)) boolean_t ubc_is_mapped(const struct vnode *, boolean_t *writable);
+__attribute__((pure)) boolean_t ubc_is_mapped_writable(const struct vnode *);

 
 

-#define UBCINFOCHECK(fun, vp)  \
-       if ((vp) && ((vp)->v_type == VREG) &&   \
-                       (((vp)->v_ubcinfo == UBC_INFO_NULL)     \
-                       || ((vp)->v_ubcinfo == UBC_NOINFO))) \
-               panic("%s: lost ubc_info", (fun));
+uint32_t cluster_max_io_size(mount_t, int);

 
 

-/* Flags for ubc_getobject() */
-#define UBC_FLAGS_NONE         0x0000
-#define UBC_HOLDOBJECT         0x0001
-#define UBC_FOR_PAGEOUT         0x0002
+#endif

 
 

-#endif /* __APPLE_API_EVOLVING */
+__END_DECLS

 
 #endif /* _SYS_UBC_H_ */
 
 
 #endif /* _SYS_UBC_H_ */