| | 1 | /* |
| | 2 | * Copyright (c) 2001 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | #ifndef _HFS_RANGELIST_H_ |
| | 29 | #define _HFS_RANGELIST_H_ |
| | 30 | |
| | 31 | #include <sys/appleapiopts.h> |
| | 32 | |
| | 33 | #ifdef KERNEL |
| | 34 | #ifdef __APPLE_API_PRIVATE |
| | 35 | #include <sys/types.h> |
| | 36 | #include <sys/queue.h> |
| | 37 | |
| | 38 | enum rl_overlaptype { |
| | 39 | RL_NOOVERLAP = 0, /* 0 */ |
| | 40 | RL_MATCHINGOVERLAP, /* 1 */ |
| | 41 | RL_OVERLAPCONTAINSRANGE, /* 2 */ |
| | 42 | RL_OVERLAPISCONTAINED, /* 3 */ |
| | 43 | RL_OVERLAPSTARTSBEFORE, /* 4 */ |
| | 44 | RL_OVERLAPENDSAFTER /* 5 */ |
| | 45 | }; |
| | 46 | |
| | 47 | #define RL_INFINITY ((off_t)-1) |
| | 48 | |
| | 49 | TAILQ_HEAD(rl_head, rl_entry); |
| | 50 | |
| | 51 | struct rl_entry { |
| | 52 | TAILQ_ENTRY(rl_entry) rl_link; |
| | 53 | off_t rl_start; |
| | 54 | off_t rl_end; |
| | 55 | }; |
| | 56 | |
| | 57 | __BEGIN_DECLS |
| | 58 | void rl_init(struct rl_head *rangelist); |
| | 59 | void rl_add(off_t start, off_t end, struct rl_head *rangelist); |
| | 60 | void rl_remove(off_t start, off_t end, struct rl_head *rangelist); |
| | 61 | enum rl_overlaptype rl_scan(struct rl_head *rangelist, |
| | 62 | off_t start, |
| | 63 | off_t end, |
| | 64 | struct rl_entry **overlap); |
| | 65 | __END_DECLS |
| | 66 | |
| | 67 | #endif /* __APPLE_API_PRIVATE */ |
| | 68 | #endif /* KERNEL */ |
| | 69 | #endif /* ! _HFS_RANGELIST_H_ */ |
projects / apple / xnu.git / blame_incremental