strace/hdio.c

/*
 * Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.com>
 * Copyright (c) 2011-2016 Dmitry V. Levin <ldv@altlinux.org>
 * Copyright (c) 2016-2017 The strace developers.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "defs.h"

#include DEF_MPERS_TYPE(struct_hd_geometry)

#include <linux/hdreg.h>

typedef struct hd_geometry struct_hd_geometry;

#include MPERS_DEFS

MPERS_PRINTER_DECL(int, hdio_ioctl, struct tcb *const tcp,
		   const unsigned int code, const kernel_ulong_t arg)
{
	switch (code) {
	case HDIO_GETGEO:
		if (entering(tcp))
			return 0;
		else {
			struct_hd_geometry geo;

			tprints(", ");
			if (!umove_or_printaddr(tcp, arg, &geo))
				tprintf("{heads=%u, sectors=%u, "
					"cylinders=%hu, start=%lu}",
					(unsigned) geo.heads,
					(unsigned) geo.sectors,
					geo.cylinders,
					(unsigned long) geo.start);
		}
		break;
	default:
		return RVAL_DECODED;
	}

	return RVAL_IOCTL_DECODED;
}