xnu-6153.41.3.tar.gz

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

diff --git a/bsd/sys/ubc_internal.h b/bsd/sys/ubc_internal.h
index e7fd9c24e0c1999d958dec46d877aa827551f3ca..030feca59dd31107459a551855cb8a202dff18b8 100644 (file)
--- a/bsd/sys/ubc_internal.h
+++ b/bsd/sys/ubc_internal.h
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 1999-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2008 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @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,


@@ -22,20 +22,20 @@
  * 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@
  */

-/* 
+/*

  *     File:   ubc.h
  *     Author: Umesh Vaishampayan [umeshv@apple.com]
  *             05-Aug-1999     umeshv  Created.
  *
  *     Header file for Unified Buffer Cache.
  *
  *     File:   ubc.h
  *     Author: Umesh Vaishampayan [umeshv@apple.com]
  *             05-Aug-1999     umeshv  Created.
  *
  *     Header file for Unified Buffer Cache.
  *

- */ 
+ */

 
 

-#ifndef        _SYS_UBC_INTERNAL_H_
-#define        _SYS_UBC_INTERNAL_H_
+#ifndef _SYS_UBC_INTERNAL_H_
+#define _SYS_UBC_INTERNAL_H_

 
 #include <sys/appleapiopts.h>
 #include <sys/types.h>
 
 #include <sys/appleapiopts.h>
 #include <sys/types.h>


@@ -44,6 +44,7 @@
 #include <sys/vnode.h>
 #include <sys/ubc.h>
 #include <sys/mman.h>
 #include <sys/vnode.h>
 #include <sys/ubc.h>
 #include <sys/mman.h>

+#include <sys/codesign.h>

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


@@ -51,110 +52,170 @@
 #include <mach/memory_object_types.h>
 
 
 #include <mach/memory_object_types.h>
 
 

-#define UBC_INFO_NULL  ((struct ubc_info *) 0)
+#define UBC_INFO_NULL   ((struct ubc_info *) 0)

 
 
 
 

-extern struct zone     *ubc_info_zone;
+extern struct zone      *ubc_info_zone;

 
 

+/*
+ * Maximum number of vfs clusters per vnode
+ */
+#define MAX_CLUSTERS    CONFIG_MAX_CLUSTERS

 
 

-#define MAX_CLUSTERS 4 /* maximum number of vfs clusters per vnode */
+#define SPARSE_PUSH_LIMIT 4     /* limit on number of concurrent sparse pushes outside of the cl_lockw */
+                                /* once we reach this limit, we'll hold the lock */

 
 struct cl_extent {
 
 struct cl_extent {

-       daddr64_t       b_addr;
-       daddr64_t       e_addr;
+       daddr64_t       b_addr;
+       daddr64_t       e_addr;

 };
 
 struct cl_wextent {
 };
 
 struct cl_wextent {

-       daddr64_t       b_addr;
-       daddr64_t       e_addr;
-        int            io_nocache;
+       daddr64_t       b_addr;
+       daddr64_t       e_addr;
+       int             io_flags;

 };
 
 struct cl_readahead {
 };
 
 struct cl_readahead {

-       lck_mtx_t       cl_lockr;
-       daddr64_t       cl_lastr;                       /* last block read by client */
-       daddr64_t       cl_maxra;                       /* last block prefetched by the read ahead */
-       int             cl_ralen;                       /* length of last prefetch */
+       lck_mtx_t       cl_lockr;
+       daddr64_t       cl_lastr;                       /* last block read by client */
+       daddr64_t       cl_maxra;                       /* last block prefetched by the read ahead */
+       int             cl_ralen;                       /* length of last prefetch */

 };
 
 struct cl_writebehind {
 };
 
 struct cl_writebehind {

-       lck_mtx_t       cl_lockw;
-        int            cl_hasbeenpaged;                /* if set, indicates pager has cleaned pages associated with this file */
-        void   *       cl_scmap;                       /* pointer to sparse cluster map */
-        int            cl_scdirty;                     /* number of dirty pages in the sparse cluster map */
-       int             cl_number;                      /* number of packed write behind clusters currently valid */
-       struct cl_wextent cl_clusters[MAX_CLUSTERS];    /* packed write behind clusters */
+       lck_mtx_t       cl_lockw;
+       void    *       cl_scmap;                       /* pointer to sparse cluster map */
+       off_t           cl_last_write;                  /* offset of the end of the last write */
+       off_t           cl_seq_written;                 /* sequentially written bytes */
+       int             cl_sparse_pushes;               /* number of pushes outside of the cl_lockw in progress */
+       int             cl_sparse_wait;                 /* synchronous push is in progress */
+       int             cl_number;                      /* number of packed write behind clusters currently valid */
+       struct cl_wextent cl_clusters[MAX_CLUSTERS];    /* packed write behind clusters */

 };
 
 };
 

+struct cs_hash;
+
+uint8_t cs_hash_type(struct cs_hash const *);
+
+struct cs_blob {
+       struct cs_blob  *csb_next;
+       cpu_type_t      csb_cpu_type;
+       unsigned int    csb_flags;
+       off_t           csb_base_offset;        /* Offset of Mach-O binary in fat binary */
+       off_t           csb_start_offset;       /* Blob coverage area start, from csb_base_offset */
+       off_t           csb_end_offset;         /* Blob coverage area end, from csb_base_offset */
+       vm_size_t       csb_mem_size;
+       vm_offset_t     csb_mem_offset;
+       vm_address_t    csb_mem_kaddr;
+       unsigned char   csb_cdhash[CS_CDHASH_LEN];
+       const struct cs_hash  *csb_hashtype;
+       vm_size_t       csb_hash_pagesize;      /* each hash entry represent this many bytes in the file */
+       vm_size_t       csb_hash_pagemask;
+       vm_size_t       csb_hash_pageshift;
+       vm_size_t       csb_hash_firstlevel_pagesize;   /* First hash this many bytes, then hash the hashes together */
+       const CS_CodeDirectory *csb_cd;
+       const char      *csb_teamid;
+       const CS_GenericBlob *csb_entitlements_blob;    /* raw blob, subrange of csb_mem_kaddr */
+       void *          csb_entitlements;       /* The entitlements as an OSDictionary */
+       unsigned int    csb_signer_type;
+
+       unsigned int    csb_reconstituted;      /* signature has potentially been modified after validation */
+       /* The following two will be replaced by the csb_signer_type. */
+       unsigned int    csb_platform_binary:1;
+       unsigned int    csb_platform_path:1;
+
+};

 
 /*
  *     The following data structure keeps the information to associate
  *     a vnode to the correspondig VM objects.
  */
 struct ubc_info {
 
 /*
  *     The following data structure keeps the information to associate
  *     a vnode to the correspondig VM objects.
  */
 struct ubc_info {

-       memory_object_t                 ui_pager;       /* pager */
-       memory_object_control_t ui_control;             /* VM control for the pager */
-       long                            ui_flags;       /* flags */
-       vnode_t                         *ui_vnode;      /* The vnode for this ubc_info */
-       ucred_t                         *ui_ucred;      /* holds credentials for NFS paging */
-       off_t                           ui_size;        /* file size for the vnode */
-
-        struct cl_readahead   *cl_rahead;              /* cluster read ahead context */
-        struct cl_writebehind *cl_wbehind;             /* cluster write behind context */
+       memory_object_t         ui_pager;       /* pager */
+       memory_object_control_t ui_control;     /* VM control for the pager */
+       vnode_t                 ui_vnode;       /* vnode for this ubc_info */
+       kauth_cred_t            ui_ucred;       /* holds credentials for NFS paging */
+       off_t                   ui_size;        /* file size for the vnode */
+       uint32_t                ui_flags;       /* flags */
+       uint32_t                cs_add_gen;     /* generation count when csblob was validated */
+
+       struct  cl_readahead   *cl_rahead;      /* cluster read ahead context */
+       struct  cl_writebehind *cl_wbehind;     /* cluster write behind context */
+
+       struct timespec         cs_mtime;       /* modify time of file when
+                                                *   first cs_blob was loaded */
+       struct  cs_blob         *cs_blobs;      /* for CODE SIGNING */
+#if CHECK_CS_VALIDATION_BITMAP
+       void                    *cs_valid_bitmap;     /* right now: used only for signed files on the read-only root volume */
+       uint64_t                cs_valid_bitmap_size; /* Save original bitmap size in case the file size changes.
+                                                      * In the future, we may want to reconsider changing the
+                                                      * underlying bitmap to reflect the new file size changes.
+                                                      */
+#endif /* CHECK_CS_VALIDATION_BITMAP */

 };
 
 /* Defines for ui_flags */
 };
 
 /* 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_ISMAPPED     0x00000010              /* vnode is currently mapped */
+#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_ISMAPPED     0x00000010      /* vnode is currently mapped */
+#define UI_MAPBUSY      0x00000020      /* vnode is being mapped or unmapped */
+#define UI_MAPWAITING   0x00000040      /* someone waiting for UI_MAPBUSY */
+#define UI_MAPPEDWRITE  0x00000080      /* it's mapped with PROT_WRITE */

 
 /*
  * exported primitives for loadable file systems.
  */
 
 __BEGIN_DECLS
 
 /*
  * exported primitives for loadable file systems.
  */
 
 __BEGIN_DECLS

-__private_extern__ int ubc_umount(struct mount *mp);
-__private_extern__ void        ubc_unmountall(void);
-__private_extern__ memory_object_t ubc_getpager(struct vnode *);
-__private_extern__ int  ubc_map(struct vnode *, int);
-__private_extern__ int ubc_destroy_named(struct vnode *);
+__private_extern__ void ubc_init(void);
+__private_extern__ int  ubc_umount(mount_t mp);
+__private_extern__ void ubc_unmountall(void);
+__private_extern__ memory_object_t ubc_getpager(vnode_t);
+__private_extern__ void ubc_destroy_named(vnode_t);

 
 /* internal only */
 
 /* internal only */

-__private_extern__ void        cluster_release(struct ubc_info *);
+__private_extern__ void cluster_release(struct ubc_info *);
+__private_extern__ uint32_t cluster_throttle_io_limit(vnode_t, uint32_t *);

 
 
 /* Flags for ubc_getobject() */
 
 
 /* Flags for ubc_getobject() */

-#define UBC_FLAGS_NONE         0x0000
-#define UBC_HOLDOBJECT         0x0001
+#define UBC_FLAGS_NONE          0x0000
+#define UBC_HOLDOBJECT          0x0001

 #define UBC_FOR_PAGEOUT         0x0002
 
 #define UBC_FOR_PAGEOUT         0x0002
 

-memory_object_control_t ubc_getobject(struct vnode *, int);
+memory_object_control_t ubc_getobject(vnode_t, int);

 
 

-int    ubc_info_init(struct vnode *);
-void   ubc_info_deallocate (struct ubc_info *);
+int     ubc_info_init(vnode_t);
+int     ubc_info_init_withsize(vnode_t, off_t);
+void    ubc_info_deallocate(struct ubc_info *);

 
 

-int    ubc_isinuse(struct vnode *, int);
+int     ubc_isinuse(vnode_t, int);
+int     ubc_isinuse_locked(vnode_t, int, int);

 
 

-int    ubc_page_op(vnode_t, off_t, int, ppnum_t *, int *);
-int    ubc_range_op(vnode_t, off_t, off_t, int, int *);
+int     ubc_getcdhash(vnode_t, off_t, unsigned char *);

 
 

+#ifdef XNU_KERNEL_PRIVATE
+int UBCINFOEXISTS(const struct vnode *);
+#endif /* XNU_KERNEL_PRIVATE */

 
 

-int    cluster_copy_upl_data(struct uio *, upl_t, int, int);
-int    cluster_copy_ubc_data(vnode_t, struct uio *, int *, int);
-
-
-int UBCINFOMISSING(vnode_t);
-int UBCINFORECLAIMED(vnode_t);
-int UBCINFOEXISTS(vnode_t);
-int UBCISVALID(vnode_t);
-int UBCINVALID(vnode_t);
-int UBCINFOCHECK(const char *, vnode_t);
+/* code signing */
+struct cs_blob;
+int     ubc_cs_blob_add(vnode_t, cpu_type_t, off_t, vm_address_t *, vm_size_t, struct image_params *, int, struct cs_blob **);
+int     ubc_cs_sigpup_add(vnode_t, vm_address_t, vm_size_t);
+struct cs_blob *ubc_get_cs_blobs(vnode_t);
+void    ubc_get_cs_mtime(vnode_t, struct timespec *);
+int     ubc_cs_getcdhash(vnode_t, off_t, unsigned char *);
+kern_return_t ubc_cs_blob_allocate(vm_offset_t *, vm_size_t *);
+void ubc_cs_blob_deallocate(vm_offset_t, vm_size_t);
+boolean_t ubc_cs_is_range_codesigned(vnode_t, mach_vm_offset_t, mach_vm_size_t);

 
 

+kern_return_t   ubc_cs_validation_bitmap_allocate( vnode_t );
+void            ubc_cs_validation_bitmap_deallocate( vnode_t );

 __END_DECLS
 
 
 __END_DECLS
 
 

-#endif /* _SYS_UBC_INTERNAL_H_ */
-
+#endif  /* _SYS_UBC_INTERNAL_H_ */