root / lab4 / .minix-src / include / randomid.h @ 14
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| 1 | 13 | up20180614 | /* $NetBSD: randomid.h,v 1.2 2005/12/26 19:01:47 perry Exp $ */
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| 2 | /* $KAME: ip6_id.c,v 1.8 2003/09/06 13:41:06 itojun Exp $ */
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| 3 | /* $OpenBSD: ip_id.c,v 1.6 2002/03/15 18:19:52 millert Exp $ */
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| 4 | |||
| 5 | /*
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| 6 | * Copyright (C) 2003 WIDE Project.
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| 7 | * All rights reserved.
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| 8 | *
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| 9 | * Redistribution and use in source and binary forms, with or without
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| 10 | * modification, are permitted provided that the following conditions
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| 11 | * are met:
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| 12 | * 1. Redistributions of source code must retain the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer.
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer in the
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| 16 | * documentation and/or other materials provided with the distribution.
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| 17 | * 3. Neither the name of the project nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | */
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| 33 | |||
| 34 | /*
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| 35 | * Copyright 1998 Niels Provos <provos@citi.umich.edu>
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| 36 | * All rights reserved.
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| 37 | *
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| 38 | * Theo de Raadt <deraadt@openbsd.org> came up with the idea of using
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| 39 | * such a mathematical system to generate more random (yet non-repeating)
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| 40 | * ids to solve the resolver/named problem. But Niels designed the
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| 41 | * actual system based on the constraints.
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| 42 | *
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| 43 | * Redistribution and use in source and binary forms, with or without
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| 44 | * modification, are permitted provided that the following conditions
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| 45 | * are met:
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| 46 | * 1. Redistributions of source code must retain the above copyright
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| 47 | * notice, this list of conditions and the following disclaimer.
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| 48 | * 2. Redistributions in binary form must reproduce the above copyright
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| 49 | * notice, this list of conditions and the following disclaimer in the
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| 50 | * documentation and/or other materials provided with the distribution.
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| 51 | * 3. All advertising materials mentioning features or use of this software
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| 52 | * must display the following acknowledgement:
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| 53 | * This product includes software developed by Niels Provos.
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| 54 | * 4. The name of the author may not be used to endorse or promote products
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| 55 | * derived from this software without specific prior written permission.
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| 56 | *
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| 57 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 58 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 59 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 60 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 61 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 62 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 63 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 64 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 65 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 66 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 67 | */
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| 68 | |||
| 69 | #ifndef _RANDOMID_H_
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| 70 | #define _RANDOMID_H_
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| 71 | |||
| 72 | struct randomid_ctx;
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| 73 | |||
| 74 | typedef struct randomid_ctx *randomid_t; |
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| 75 | |||
| 76 | extern uint32_t randomid(randomid_t);
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| 77 | extern randomid_t randomid_new(int, long); |
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| 78 | extern void randomid_delete(randomid_t); |
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| 79 | |||
| 80 | #define RANDOMID_TIMEO_MIN ((long)60) |
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| 81 | #define RANDOMID_TIMEO_DEFAULT ((long)180) |
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| 82 | |||
| 83 | #endif /*_RANDOMID_H_*/ |