projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 0b4e3aa0 | 2 | * Copyright (c) 2001 Apple Computer, Inc. All rights reserved. |
| 1c79356b A |
3 | * |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| de355530 A |
6 | * The contents of this file constitute Original Code as defined in and |
| 7 | * are subject to the Apple Public Source License Version 1.1 (the | |
| 8 | * "License"). You may not use this file except in compliance with the | |
| 9 | * License. Please obtain a copy of the License at | |
| 10 | * http://www.apple.com/publicsource and read it before using this file. | |
| 1c79356b | 11 | * |
| de355530 A |
12 | * This Original Code and all software distributed under the License are |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 1c79356b A |
14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| de355530 A |
16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the |
| 17 | * License for the specific language governing rights and limitations | |
| 18 | * under the License. | |
| 1c79356b A |
19 | * |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 9bccf70c A |
22 | #ifndef _HFS_RANGELIST_H_ |
| 23 | #define _HFS_RANGELIST_H_ | |
| 1c79356b | 24 | |
| 9bccf70c A |
25 | #include <sys/appleapiopts.h> |
| 26 | ||
| 27 | #ifdef KERNEL | |
| 28 | #ifdef __APPLE_API_PRIVATE | |
| 0b4e3aa0 A |
29 | #include <sys/types.h> |
| 30 | #include <sys/queue.h> | |
| 1c79356b | 31 | |
| 0b4e3aa0 A |
32 | enum rl_overlaptype { |
| 33 | RL_NOOVERLAP = 0, /* 0 */ | |
| 34 | RL_MATCHINGOVERLAP, /* 1 */ | |
| 35 | RL_OVERLAPCONTAINSRANGE, /* 2 */ | |
| 36 | RL_OVERLAPISCONTAINED, /* 3 */ | |
| 37 | RL_OVERLAPSTARTSBEFORE, /* 4 */ | |
| 38 | RL_OVERLAPENDSAFTER /* 5 */ | |
| 1c79356b | 39 | }; |
| 1c79356b | 40 | |
| 0b4e3aa0 | 41 | #define RL_INFINITY ((off_t)-1) |
| 1c79356b | 42 | |
| 0b4e3aa0 | 43 | CIRCLEQ_HEAD(rl_head, rl_entry); |
| 1c79356b | 44 | |
| 0b4e3aa0 A |
45 | struct rl_entry { |
| 46 | CIRCLEQ_ENTRY(rl_entry) rl_link; | |
| 47 | off_t rl_start; | |
| 48 | off_t rl_end; | |
| 49 | }; | |
| 1c79356b | 50 | |
| 0b4e3aa0 A |
51 | __BEGIN_DECLS |
| 52 | void rl_init(struct rl_head *rangelist); | |
| 53 | void rl_add(off_t start, off_t end, struct rl_head *rangelist); | |
| 54 | void rl_remove(off_t start, off_t end, struct rl_head *rangelist); | |
| 55 | enum rl_overlaptype rl_scan(struct rl_head *rangelist, | |
| 56 | off_t start, | |
| 57 | off_t end, | |
| 58 | struct rl_entry **overlap); | |
| 59 | __END_DECLS | |
| 9bccf70c A |
60 | |
| 61 | #endif /* __APPLE_API_PRIVATE */ | |
| 62 | #endif /* KERNEL */ | |
| 63 | #endif /* ! _HFS_RANGELIST_H_ */ |