69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/* $NetBSD: rumpfiber_bio.c,v 1.5 2014/11/04 19:05:17 pooka Exp $ */
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/*-
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* Copyright (c) 2014 Antti Kantee. 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 ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* 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 OR
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* 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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#include "rumpuser_port.h"
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#if !defined(lint)
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__RCSID("$NetBSD: rumpfiber_bio.c,v 1.5 2014/11/04 19:05:17 pooka Exp $");
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#endif /* !lint */
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#include <sys/types.h>
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#include <errno.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <rump/rumpuser.h>
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#include "rumpuser_int.h"
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void
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rumpuser_bio(int fd, int op, void *data, size_t dlen, int64_t doff,
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rump_biodone_fn biodone, void *bioarg)
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{
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ssize_t rv;
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int error = 0;
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if (op & RUMPUSER_BIO_READ) {
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if ((rv = pread(fd, data, dlen, doff)) == -1)
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error = rumpuser__errtrans(errno);
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} else {
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if ((rv = pwrite(fd, data, dlen, doff)) == -1)
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error = rumpuser__errtrans(errno);
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if (error == 0 && (op & RUMPUSER_BIO_SYNC)) {
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#ifdef HAVE_FSYNC_RANGE
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fsync_range(fd, FDATASYNC, doff, dlen);
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#else
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fsync(fd);
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#endif
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}
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}
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if (rv == -1)
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rv = 0;
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biodone(bioarg, (size_t)rv, error);
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}
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