37c4e1235f
consistent with other rump clients. Copying between kernels is
done using the host pipe, e.g.:
dd if=foo rof=bar skip=1 seek=1 => dd if=foo skip=1 | rump.dd of=bar seek=1
Also, the pipe idiom extends to copying between different rump
kernels, e.g.:
env RUMP_SERVER=unix://srv1 rump.dd if=thefile \
| env RUMP_SERVER=unix://srv2 rump.dd of=thefile
Pipe approach suggested by yamt (thanks!)
54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/* $NetBSD: dd_hostops.c,v 1.1 2011/02/04 19:42:12 pooka Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: dd_hostops.c,v 1.1 2011/02/04 19:42:12 pooka Exp $");
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#endif /* !lint */
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "dd.h"
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const struct ddfops ddfops_prog = {
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.op_open = open,
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.op_close = close,
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.op_fcntl = fcntl,
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.op_ioctl = ioctl,
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.op_fstat = fstat,
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.op_fsync = fsync,
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.op_ftruncate = ftruncate,
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.op_lseek = lseek,
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.op_read = read,
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.op_write = write,
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};
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