1bc9b5ba84
o Use srandomdev() for __FreeBSD__ >= 2, not just >2. o Use srandom((time(NULL)^getpid())+random()), random() when we haven't got srandomdev().
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/*-
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* Copyright (c) 1997 Brian Somers <brian@Awfulhak.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 AUTHOR 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 AUTHOR 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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* $Id: defs.c,v 1.11.4.10 1998/04/30 23:53:35 brian Exp $
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*/
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#include <stdlib.h>
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#include <sys/errno.h>
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#include <time.h>
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#include <unistd.h>
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#include "defs.h"
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void
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randinit()
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{
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#if __FreeBSD__ >= 2
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static int initdone;
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if (!initdone) {
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initdone = 1;
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srandomdev();
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}
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#else
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srandom((time(NULL)^getpid())+random());
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#endif
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}
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ssize_t
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fullread(int fd, void *v, size_t n)
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{
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size_t got, total;
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for (total = 0; total < n; total += got)
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switch ((got = read(fd, (char *)v + total, n - total))) {
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case 0:
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return total;
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case -1:
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if (errno == EINTR)
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got = 0;
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else
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return -1;
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}
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return total;
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}
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