X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..94ff46dc2849db4d43eaaf144872decc522aafb4:/bsd/sys/ubc_internal.h?ds=sidebyside diff --git a/bsd/sys/ubc_internal.h b/bsd/sys/ubc_internal.h index e7fd9c24e..030feca59 100644 --- 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@ - * + * * 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. - * + * * 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, @@ -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. - * + * * @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. * - */ + */ -#ifndef _SYS_UBC_INTERNAL_H_ -#define _SYS_UBC_INTERNAL_H_ +#ifndef _SYS_UBC_INTERNAL_H_ +#define _SYS_UBC_INTERNAL_H_ #include #include @@ -44,6 +44,7 @@ #include #include #include +#include #include @@ -51,110 +52,170 @@ #include -#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 { - daddr64_t b_addr; - daddr64_t e_addr; + daddr64_t b_addr; + daddr64_t e_addr; }; 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 { - 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 { - 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 { - 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 */ -#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 -__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 */ -__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() */ -#define UBC_FLAGS_NONE 0x0000 -#define UBC_HOLDOBJECT 0x0001 +#define UBC_FLAGS_NONE 0x0000 +#define UBC_HOLDOBJECT 0x0001 #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 -#endif /* _SYS_UBC_INTERNAL_H_ */ - +#endif /* _SYS_UBC_INTERNAL_H_ */