setup.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

/*
  setup -- setup and reset cd writer
  Copyright (C) 1996 Dieter Baron and Armin Obersteiner

  This file is part of cdwrite.
  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 <stdio.h>

#include <scsi/all.h>
#include <scsi/hp.h>
#include <scsi/cdr102.h>

#include "cdwrite.h"



struct {
    struct sc_mode_block_descriptor bdesc;
    struct sc_mode_hp_speed page;
} hp_restore;
struct {
    struct sc_mode_header6 header;
    struct sc_mode_block_descriptor bdesc;
    struct sc_mode_hp_speed page;
} hp_tmp;

struct {
    struct sc_mode_block_descriptor bdesc;
    struct sc_mode_cdr102_conf page;
} yama_restore;
struct {
    struct sc_mode_header6 header;
    struct sc_mode_block_descriptor bdesc;
    struct sc_mode_cdr102_conf page;
} yama_tmp;

int
setup(int speed, int dummy)
{
    u_char b[256];
    
/*    if (sc_da_prevent_allow_medium_removal(scsi, 1) < 0) {
      sc_fstatus(scsi, stderr, prg, "prevent-allow-medium-removal", 3);
    return 1;
    } */

    switch (mode) {
    case 0: /* hp */
    case 1: /* philips */
    case 2:
    case 3:
	/* remember page */
	if (sc_mode_sense6(scsi, SC_MODE_HP_SPEED, 0, 0, 255, b) < 0) {
	    sc_fstatus(scsi, stderr, prg, "mode-sense-6", 3);
	    return 1;
	}
	memcpy(&hp_restore.bdesc, b+4, sizeof(hp_restore.bdesc));
	memcpy(&hp_restore.page, b+4+b[3]*8, sizeof(hp_restore.page));

	/* initialize and set new page */
	memset(&hp_tmp, 0, sizeof(hp_tmp));
	hp_tmp.header.bdno = 1;
	hp_tmp.page = hp_restore.page;
	hp_tmp.page.speed = speed;
	hp_tmp.page.emu = dummy;
	hp_tmp.bdesc = hp_restore.bdesc;
	sc_store_l((char *)&hp_tmp.bdesc.r4, 2048);
	if (sc_mode_select6(scsi, 1, 0, sizeof(hp_tmp),
			    (u_char *)&hp_tmp) < 0) {
	    sc_fstatus(scsi, stderr, prg, "mode-select-6", 3);
	    return 1;
	}
	break;
    
    case 4: /* yamaha */
	/* remember page */
	if (sc_mode_sense6(scsi, SC_MODE_CDR102_CONF, 0, 0, 255, b) < 0) {
	    sc_fstatus(scsi, stderr, prg, "mode-sense-6", 3);
	    return 1;
	}
	memcpy(&yama_restore.bdesc, b+4, sizeof(yama_restore.bdesc));
	memcpy(&yama_restore.page, b+4+b[3]*8, sizeof(yama_restore.page));

	/* initialize and set new page */
	memset(&yama_tmp, 0, sizeof(yama_tmp));
	yama_tmp.header.bdno = 1;
	yama_tmp.bdesc = yama_restore.bdesc;
	yama_tmp.page = yama_restore.page;
	yama_tmp.page.speed = speed/2;
	yama_tmp.page.emu = dummy;
	if (sc_mode_select6(scsi, 1, 0, sizeof(yama_tmp),
			    (u_char *)&yama_tmp) < 0) {
	    sc_fstatus(scsi, stderr, prg, "mode-select-6", 3);
	    return 1;
	}
	break;
    }

    return 0;
}

int
cleanup(void)
{
    switch (mode) {
    case 0: /* hp */
    case 1: /* philips */
    case 2:
    case 3:
	/* reset mode page */
	hp_tmp.bdesc = hp_restore.bdesc;
	hp_tmp.page = hp_restore.page;
	if (sc_mode_select6(scsi, 1, 0, sizeof(hp_tmp),
			    (u_char *)&hp_tmp) < 0) {
	    sc_fstatus(scsi, stderr, prg, "mode-select-6", 3);
	    return 1;
	}
	break;
        
    case 4: /* yamaha */
	/* reset mode page */
	yama_tmp.bdesc = yama_restore.bdesc;
	yama_tmp.page = yama_restore.page;
	if (sc_mode_select6(scsi, 1, 0, sizeof(yama_tmp),
			    (u_char *)&yama_tmp) < 0) {
	    sc_fstatus(scsi, stderr, prg, "mode-select-6", 3);
	    return 1;
	}
	break;
    }

/*    if (sc_da_prevent_allow_medium_removal(scsi, 0) < 0) {
    sc_fstatus(scsi, stderr, prg, "prevent-allow-medium-removal", 3);
    return 1;
    } */

    return 0;
}