rangelist.h

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    1 /*
    2  * Copyright (c) 2001 Apple Computer, Inc. All rights reserved.
    3  *
    4  * @APPLE_LICENSE_HEADER_START@
    5  * 
    6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
    7  * 
    8  * This file contains Original Code and/or Modifications of Original Code
    9  * as defined in and that are subject to the Apple Public Source License
   10  * Version 2.0 (the 'License'). You may not use this file except in
   11  * compliance with the License. Please obtain a copy of the License at
   12  * http://www.opensource.apple.com/apsl/ and read it before using this
   13  * file.
   14  * 
   15  * The Original Code and all software distributed under the License are
   16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   20  * Please see the License for the specific language governing rights and
   21  * limitations under the License.
   22  * 
   23  * @APPLE_LICENSE_HEADER_END@
   24  */
   25 #ifndef _HFS_RANGELIST_H_
   26 #define _HFS_RANGELIST_H_
   27 
   28 #include <sys/appleapiopts.h>
   29 
   30 #ifdef KERNEL
   31 #ifdef __APPLE_API_PRIVATE
   32 #include <sys/types.h>
   33 #include <sys/queue.h>
   34 
   35 enum rl_overlaptype {
   36     RL_NOOVERLAP = 0,           /* 0 */
   37     RL_MATCHINGOVERLAP,         /* 1 */
   38     RL_OVERLAPCONTAINSRANGE,    /* 2 */
   39     RL_OVERLAPISCONTAINED,      /* 3 */
   40     RL_OVERLAPSTARTSBEFORE,     /* 4 */
   41     RL_OVERLAPENDSAFTER         /* 5 */
   42 };
   43 
   44 #define RL_INFINITY ((off_t)-1)
   45 
   46 CIRCLEQ_HEAD(rl_head, rl_entry);
   47 
   48 struct rl_entry {
   49     CIRCLEQ_ENTRY(rl_entry) rl_link;
   50     off_t rl_start;
   51     off_t rl_end;
   52 };
   53 
   54 __BEGIN_DECLS
   55 void rl_init(struct rl_head *rangelist);
   56 void rl_add(off_t start, off_t end, struct rl_head *rangelist);
   57 void rl_remove(off_t start, off_t end, struct rl_head *rangelist);
   58 enum rl_overlaptype rl_scan(struct rl_head *rangelist,
   59                                                         off_t start,
   60                                                         off_t end,
   61                                                         struct rl_entry **overlap);
   62 __END_DECLS
   63 
   64 #endif /* __APPLE_API_PRIVATE */
   65 #endif /* KERNEL */
   66 #endif /* ! _HFS_RANGELIST_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/bsd/hfs/rangelist.h

FreeBSD/Linux Kernel Cross Reference
sys/bsd/hfs/rangelist.h