zip_set_lock.c

使用libscsi做的一系列cdrom操作工具程序。包含cdwrite,cdflush,cdda三个程序

/*
  zip_set_lock -- set locking state of disk (for Iomega Zip)
  Copyright (C) 1996 Dieter Baron and Armin Obersteiner

  This file is part of libscsi, a library for direct scsi device access
  The authors can be contacted at
	<[e-mail]>
	<[e-mail]>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <scsi/zip.h>



int
sc_zip_set_lock(SCSI *fd, struct sc_zip_lock *lock)
{
    static unsigned char cmd[6] = { 0x0c, 0, 0x00, 0x00, 0, 0x00 };
    int result;

    cmd[1] = lock->state;
    cmd[4] = lock->len;

    if ((result=sc_send(fd, SC_READ, 6, cmd, lock->len, lock->pass)) < 0)
	return result;

    return 0;
}