3f4b504568
few bugs for a few corner cases and correctly handle the case where read(2) is read()'ing from a non-file descriptor and could get fewer bytes back than the buffer, but it isn't EOF[2]. random(6) extensively tested and believed to be bug free (save performance for large files). Submitted by: mkm [1], tjr[2]
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/*
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* Copyright (C) 2003 Sean Chittenden <seanc@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __RANDOMIZE_FD__
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#define __RANDOMIZE_FD__
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#define RANDOM_TYPE_UNSET 0
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#define RANDOM_TYPE_LINES 1
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#define RANDOM_TYPE_WORDS 2
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/* The multiple instance single integer key */
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struct rand_node {
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u_char *cp;
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u_int len;
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struct rand_node *next;
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};
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int randomize_fd(int fd, int type, int unique, double denom);
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#endif
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