projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 0b4e3aa0 | 2 | * Copyright (c) 2001 Apple Computer, Inc. All rights reserved. |
| 1c79356b | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 1c79356b | 5 | * |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
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 | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b | 27 | */ |
| 9bccf70c A |
28 | #ifndef _HFS_RANGELIST_H_ |
| 29 | #define _HFS_RANGELIST_H_ | |
| 1c79356b | 30 | |
| 9bccf70c A |
31 | #include <sys/appleapiopts.h> |
| 32 | ||
| 33 | #ifdef KERNEL | |
| 34 | #ifdef __APPLE_API_PRIVATE | |
| 0b4e3aa0 A |
35 | #include <sys/types.h> |
| 36 | #include <sys/queue.h> | |
| 1c79356b | 37 | |
| 0b4e3aa0 A |
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 */ | |
| 1c79356b | 45 | }; |
| 1c79356b | 46 | |
| 0b4e3aa0 | 47 | #define RL_INFINITY ((off_t)-1) |
| 1c79356b | 48 | |
| b0d623f7 | 49 | TAILQ_HEAD(rl_head, rl_entry); |
| 1c79356b | 50 | |
| 0b4e3aa0 | 51 | struct rl_entry { |
| b0d623f7 | 52 | TAILQ_ENTRY(rl_entry) rl_link; |
| 0b4e3aa0 A |
53 | off_t rl_start; |
| 54 | off_t rl_end; | |
| 55 | }; | |
| 1c79356b | 56 | |
| 0b4e3aa0 A |
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 | |
| 9bccf70c A |
66 | |
| 67 | #endif /* __APPLE_API_PRIVATE */ | |
| 68 | #endif /* KERNEL */ | |
| 69 | #endif /* ! _HFS_RANGELIST_H_ */ |