179 lines
6.5 KiB
C
179 lines
6.5 KiB
C
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/*
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* Copyright (c) 1999-2007 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/*
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* Header file for Unified Buffer Cache.
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*
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*/
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#ifndef _SYS_UBC_H_
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#define _SYS_UBC_H_
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#include <sys/appleapiopts.h>
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#include <sys/cdefs.h>
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#include <sys/kernel_types.h>
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#include <kern/locks.h>
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#include <mach/machine.h>
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#include <mach/memory_object_types.h>
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#include <sys/ucred.h>
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#ifdef KERNEL_PRIVATE
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#include <sys/imgact.h>
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#endif // KERNEL_PRIVATE
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/* defns for ubc_msync() and ubc_msync */
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#define UBC_PUSHDIRTY 0x01 /* clean any dirty pages in the specified range to the backing store */
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#define UBC_PUSHALL 0x02 /* push both dirty and precious pages to the backing store */
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#define UBC_INVALIDATE 0x04 /* invalidate pages in the specified range... may be used with UBC_PUSHDIRTY/ALL */
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#define UBC_SYNC 0x08 /* wait for I/Os generated by UBC_PUSHDIRTY to complete */
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__BEGIN_DECLS
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off_t ubc_blktooff(struct vnode *, daddr64_t);
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daddr64_t ubc_offtoblk(struct vnode *, off_t);
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off_t ubc_getsize(struct vnode *);
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int ubc_setsize(struct vnode *, off_t);
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#ifdef KERNEL_PRIVATE
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enum {
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UBC_SETSIZE_NO_FS_REENTRY = 1
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};
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typedef uint32_t ubc_setsize_opts_t;
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errno_t ubc_setsize_ex(vnode_t vp, off_t nsize, ubc_setsize_opts_t opts);
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#endif // KERNEL_PRIVATE
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kauth_cred_t ubc_getcred(struct vnode *);
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struct thread;
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int ubc_setthreadcred(struct vnode *, struct proc *, struct thread *);
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errno_t ubc_msync(vnode_t, off_t, off_t, off_t *, int);
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int ubc_pages_resident(vnode_t);
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int ubc_page_op(vnode_t, off_t, int, ppnum_t *, int *);
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int ubc_range_op(vnode_t, off_t, off_t, int, int *);
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#ifdef KERNEL_PRIVATE
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int ubc_setcred(struct vnode *, struct ucred *);
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/* code signing */
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struct cs_blob;
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struct cs_blob *ubc_cs_blob_get(vnode_t, cpu_type_t, cpu_subtype_t, off_t);
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struct cs_blob *ubc_cs_blob_get_supplement(vnode_t, off_t);
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/* apis to handle generation count for cs blob */
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void cs_blob_reset_cache(void);
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int ubc_cs_blob_revalidate(vnode_t, struct cs_blob *, struct image_params *, int, uint32_t);
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int ubc_cs_generation_check(vnode_t);
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int cs_entitlements_blob_get(proc_t, void **, size_t *);
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int cs_blob_get(proc_t, void **, size_t *);
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const char *cs_identity_get(proc_t);
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void ubc_cs_free_and_vnode_unlock(struct vnode *);
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int UBCINFOEXISTS(const struct vnode *);
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#endif
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/* cluster IO routines */
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void cluster_update_state(vnode_t, vm_object_offset_t, vm_object_offset_t, boolean_t);
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int advisory_read(vnode_t, off_t, off_t, int);
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int advisory_read_ext(vnode_t, off_t, off_t, int, int (*)(buf_t, void *), void *, int);
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int cluster_read(vnode_t, struct uio *, off_t, int);
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int cluster_read_ext(vnode_t, struct uio *, off_t, int, int (*)(buf_t, void *), void *);
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int cluster_write(vnode_t, struct uio *, off_t, off_t, off_t, off_t, int);
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int cluster_write_ext(vnode_t, struct uio *, off_t, off_t, off_t, off_t, int, int (*)(buf_t, void *), void *);
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int cluster_pageout(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int);
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int cluster_pageout_ext(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int, int (*)(buf_t, void *), void *);
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int cluster_pagein(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int);
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int cluster_pagein_ext(vnode_t, upl_t, upl_offset_t, off_t, int, off_t, int, int (*)(buf_t, void *), void *);
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int cluster_push(vnode_t, int);
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int cluster_push_ext(vnode_t, int, int (*)(buf_t, void *), void *);
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int cluster_push_err(vnode_t, int, int (*)(buf_t, void *), void *, int *);
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int cluster_bp(buf_t);
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int cluster_bp_ext(buf_t, int (*)(buf_t, void *), void *);
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void cluster_zero(upl_t, upl_offset_t, int, buf_t);
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int cluster_copy_upl_data(uio_t, upl_t, int, int *);
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int cluster_copy_ubc_data(vnode_t, uio_t, int *, int);
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typedef struct cl_direct_read_lock cl_direct_read_lock_t;
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cl_direct_read_lock_t *cluster_lock_direct_read(vnode_t vp, lck_rw_type_t exclusive);
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void cluster_unlock_direct_read(cl_direct_read_lock_t *lck);
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/* UPL routines */
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#ifndef XNU_KERNEL_PRIVATE
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int ubc_create_upl(vnode_t, off_t, int, upl_t *, upl_page_info_t **, int);
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#endif /* XNU_KERNEL_PRIVATE */
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int ubc_upl_map(upl_t, vm_offset_t *);
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int ubc_upl_unmap(upl_t);
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int ubc_upl_map_range(upl_t, vm_offset_t, vm_size_t, vm_prot_t, vm_offset_t *);
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int ubc_upl_unmap_range(upl_t, vm_offset_t, vm_size_t);
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int ubc_upl_commit(upl_t);
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int ubc_upl_commit_range(upl_t, upl_offset_t, upl_size_t, int);
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int ubc_upl_abort(upl_t, int);
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int ubc_upl_abort_range(upl_t, upl_offset_t, upl_size_t, int);
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void ubc_upl_range_needed(upl_t, int, int);
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upl_page_info_t *ubc_upl_pageinfo(upl_t);
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upl_size_t ubc_upl_maxbufsize(void);
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int is_file_clean(vnode_t, off_t);
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errno_t mach_to_bsd_errno(kern_return_t mach_err);
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#ifdef KERNEL_PRIVATE
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int ubc_create_upl_external(vnode_t, off_t, int, upl_t *, upl_page_info_t **, int);
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#ifdef XNU_KERNEL_PRIVATE
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int ubc_create_upl_kernel(vnode_t, off_t, int, upl_t *, upl_page_info_t **, int, vm_tag_t);
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#endif /* XNU_KERNEL_PRIVATE */
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boolean_t ubc_is_mapped(const struct vnode *, boolean_t *writable);
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__attribute__((pure)) boolean_t ubc_is_mapped_writable(const struct vnode *);
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boolean_t ubc_was_mapped(const struct vnode *, boolean_t *writable);
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__attribute__((pure)) boolean_t ubc_was_mapped_writable(const struct vnode *);
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uint32_t cluster_max_io_size(mount_t, int);
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#endif
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__END_DECLS
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#endif /* _SYS_UBC_H_ */
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