X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/9bccf70c0258c7cac2dcb80011b2a964d884c552..7ddcb079202367355dddccdfa4318e57d50318be:/bsd/sys/ubc.h?ds=sidebyside diff --git a/bsd/sys/ubc.h b/bsd/sys/ubc.h index d243bb97f..4ee9e86cf 100644 --- a/bsd/sys/ubc.h +++ b/bsd/sys/ubc.h @@ -1,29 +1,31 @@ /* - * Copyright (c) 1999, 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 1999-2007 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * 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. 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. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * 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, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE 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_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. * */ @@ -32,134 +34,88 @@ #define _SYS_UBC_H_ #include -#include -#include -#include - #include - +#include +#include #include -#define UBC_INFO_NULL ((struct ubc_info *) 0) -#define UBC_NOINFO ((struct ubc_info *)0xDEADD1ED) -#ifdef __APPLE_API_PRIVATE -extern struct zone *ubc_info_zone; +/* defns for ubc_sync_range() and ubc_msync */ -/* - * 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 */ - 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 */ -}; - -/* 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 */ - -#endif /* __APPLE_API_PRIVATE */ - -#ifdef __APPLE_API_EVOLVING -/* - * exported primitives for loadable file systems. - */ +#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 */ __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, vm_offset_t *, int *)); + +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); + +kauth_cred_t ubc_getcred(struct vnode *); +struct thread; +int ubc_setthreadcred(struct vnode *, struct proc *, struct thread *); + +int ubc_sync_range(vnode_t, off_t, off_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 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); +int cs_entitlements_blob_get(proc_t p, void **, size_t *); +#endif /* 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_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 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); -/* 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 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 *); -#define UBCINFOMISSING(vp) \ - ((vp) && ((vp)->v_type == VREG) && ((vp)->v_ubcinfo == UBC_INFO_NULL)) +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 *); -#define UBCINFORECLAIMED(vp) \ - ((vp) && ((vp)->v_type == VREG) && ((vp)->v_ubcinfo == UBC_NOINFO)) +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 *); -#define UBCINFOEXISTS(vp) \ - ((vp) && ((vp)->v_type == VREG) && \ - ((vp)->v_ubcinfo) && ((vp)->v_ubcinfo != UBC_NOINFO)) +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 *); -#define UBCISVALID(vp) \ - ((vp) && ((vp)->v_type == VREG) && !((vp)->v_flag & VSYSTEM)) +int cluster_push(vnode_t, int); +int cluster_push_ext(vnode_t, int, int (*)(buf_t, void *), void *); -#define UBCINVALID(vp) \ - (((vp) == NULL) || ((vp) && ((vp)->v_type != VREG)) \ - || ((vp) && ((vp)->v_flag & VSYSTEM))) +int cluster_bp(buf_t); +int cluster_bp_ext(buf_t, int (*)(buf_t, void *), void *); -#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)); +void cluster_zero(upl_t, upl_offset_t, int, buf_t); -/* Flags for ubc_getobject() */ -#define UBC_FLAGS_NONE 0x0000 -#define UBC_HOLDOBJECT 0x0001 +int cluster_copy_upl_data(uio_t, upl_t, int, int *); +int cluster_copy_ubc_data(vnode_t, uio_t, int *, int); -#endif /* __APPLE_API_EVOLVING */ + +/* UPL routines */ +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); + +upl_page_info_t *ubc_upl_pageinfo(upl_t); +upl_size_t ubc_upl_maxbufsize(void); + +int is_file_clean(vnode_t, off_t); + +__END_DECLS #endif /* _SYS_UBC_H_ */