81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: cdrom_beos.cc,v 1.5 2009-02-08 09:05:52 vruppert Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2000 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <SupportDefs.h>
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#include <Drivers.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "cdrom_beos.h"
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int GetLogicalBlockSize(int fd)
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{
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partition_info p_info;
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if (ioctl(fd, B_GET_PARTITION_INFO, &p_info) == B_NO_ERROR)
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{
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//dprintf("GetLogicalBlockSize: ioctl suceed\n");
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return p_info.logical_block_size;
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}
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else //dprintf("GetLogicalBlockSize = ioctl returned error\n");
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return 0;
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}
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int GetDeviceBlockSize(int fd)
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{
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struct stat st;
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device_geometry dg;
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if (ioctl(fd, B_GET_GEOMETRY, &dg) < 0)
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{
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if (fstat(fd, &st) < 0 || S_ISDIR(st.st_mode))
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return 0;
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return 512; /* just assume it's a plain old file or something */
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}
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return dg.bytes_per_sector;
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}
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off_t GetNumDeviceBlocks(int fd, int block_size)
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{
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struct stat st;
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device_geometry dg;
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if (ioctl(fd, B_GET_GEOMETRY, &dg) >= 0)
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{
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return (off_t)dg.cylinder_count *
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(off_t)dg.sectors_per_track *
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(off_t)dg.head_count;
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}
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/* if the ioctl fails, try just stat'ing in case it's a regular file */
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if (fstat(fd, &st) < 0)
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return 0;
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return st.st_size / block_size;
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}
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