1084 lines
38 KiB
C
1084 lines
38 KiB
C
/*
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* cdrom_id - optical drive and media information prober
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*
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* Copyright (C) 2008-2010 Kay Sievers <kay@vrfy.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <limits.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <getopt.h>
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#include <time.h>
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#include <scsi/sg.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <linux/cdrom.h>
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#include "libudev.h"
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#include "libudev-private.h"
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/* device info */
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static unsigned int cd_cd_rom;
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static unsigned int cd_cd_r;
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static unsigned int cd_cd_rw;
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static unsigned int cd_dvd_rom;
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static unsigned int cd_dvd_r;
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static unsigned int cd_dvd_rw;
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static unsigned int cd_dvd_ram;
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static unsigned int cd_dvd_plus_r;
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static unsigned int cd_dvd_plus_rw;
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static unsigned int cd_dvd_plus_r_dl;
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static unsigned int cd_dvd_plus_rw_dl;
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static unsigned int cd_bd;
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static unsigned int cd_bd_r;
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static unsigned int cd_bd_re;
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static unsigned int cd_hddvd;
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static unsigned int cd_hddvd_r;
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static unsigned int cd_hddvd_rw;
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static unsigned int cd_mo;
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static unsigned int cd_mrw;
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static unsigned int cd_mrw_w;
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/* media info */
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static unsigned int cd_media;
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static unsigned int cd_media_cd_rom;
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static unsigned int cd_media_cd_r;
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static unsigned int cd_media_cd_rw;
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static unsigned int cd_media_dvd_rom;
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static unsigned int cd_media_dvd_r;
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static unsigned int cd_media_dvd_rw;
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static unsigned int cd_media_dvd_rw_ro; /* restricted overwrite mode */
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static unsigned int cd_media_dvd_rw_seq; /* sequential mode */
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static unsigned int cd_media_dvd_ram;
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static unsigned int cd_media_dvd_plus_r;
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static unsigned int cd_media_dvd_plus_rw;
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static unsigned int cd_media_dvd_plus_r_dl;
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static unsigned int cd_media_dvd_plus_rw_dl;
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static unsigned int cd_media_bd;
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static unsigned int cd_media_bd_r;
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static unsigned int cd_media_bd_re;
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static unsigned int cd_media_hddvd;
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static unsigned int cd_media_hddvd_r;
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static unsigned int cd_media_hddvd_rw;
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static unsigned int cd_media_mo;
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static unsigned int cd_media_mrw;
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static unsigned int cd_media_mrw_w;
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static const char *cd_media_state = NULL;
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static unsigned int cd_media_session_next;
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static unsigned int cd_media_session_count;
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static unsigned int cd_media_track_count;
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static unsigned int cd_media_track_count_data;
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static unsigned int cd_media_track_count_audio;
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static unsigned long long int cd_media_session_last_offset;
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#define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
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#define SK(errcode) (((errcode) >> 16) & 0xF)
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#define ASC(errcode) (((errcode) >> 8) & 0xFF)
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#define ASCQ(errcode) ((errcode) & 0xFF)
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static bool is_mounted(const char *device)
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{
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struct stat statbuf;
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FILE *fp;
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int maj, min;
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bool mounted = false;
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if (stat(device, &statbuf) < 0)
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return -ENODEV;
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fp = fopen("/proc/self/mountinfo", "re");
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if (fp == NULL)
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return -ENOSYS;
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while (fscanf(fp, "%*s %*s %i:%i %*[^\n]", &maj, &min) == 2) {
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if (makedev(maj, min) == statbuf.st_rdev) {
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mounted = true;
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break;
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}
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}
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fclose(fp);
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return mounted;
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}
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static void info_scsi_cmd_err(struct udev *udev, const char *cmd, int err)
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{
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if (err == -1) {
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log_debug("%s failed", cmd);
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return;
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}
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log_debug("%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh", cmd, SK(err), ASC(err), ASCQ(err));
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}
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struct scsi_cmd {
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struct cdrom_generic_command cgc;
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union {
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struct request_sense s;
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unsigned char u[18];
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} _sense;
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struct sg_io_hdr sg_io;
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};
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static void scsi_cmd_init(struct udev *udev, struct scsi_cmd *cmd)
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{
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memzero(cmd, sizeof(struct scsi_cmd));
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cmd->cgc.quiet = 1;
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cmd->cgc.sense = &cmd->_sense.s;
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cmd->sg_io.interface_id = 'S';
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cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
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cmd->sg_io.cmdp = cmd->cgc.cmd;
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cmd->sg_io.sbp = cmd->_sense.u;
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cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
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}
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static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, unsigned char arg)
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{
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cmd->sg_io.cmd_len = i + 1;
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cmd->cgc.cmd[i] = arg;
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}
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#define CHECK_CONDITION 0x01
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static int scsi_cmd_run(struct udev *udev, struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
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{
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int ret = 0;
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if (bufsize > 0) {
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cmd->sg_io.dxferp = buf;
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cmd->sg_io.dxfer_len = bufsize;
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cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
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} else {
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cmd->sg_io.dxfer_direction = SG_DXFER_NONE;
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}
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if (ioctl(fd, SG_IO, &cmd->sg_io))
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return -1;
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if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
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errno = EIO;
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ret = -1;
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if (cmd->sg_io.masked_status & CHECK_CONDITION) {
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ret = ERRCODE(cmd->_sense.u);
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if (ret == 0)
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ret = -1;
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}
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}
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return ret;
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}
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static int media_lock(struct udev *udev, int fd, bool lock)
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{
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int err;
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/* disable the kernel's lock logic */
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err = ioctl(fd, CDROM_CLEAR_OPTIONS, CDO_LOCK);
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if (err < 0)
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log_debug("CDROM_CLEAR_OPTIONS, CDO_LOCK failed");
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err = ioctl(fd, CDROM_LOCKDOOR, lock ? 1 : 0);
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if (err < 0)
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log_debug("CDROM_LOCKDOOR failed");
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return err;
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}
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static int media_eject(struct udev *udev, int fd)
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{
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struct scsi_cmd sc;
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int err;
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scsi_cmd_init(udev, &sc);
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scsi_cmd_set(udev, &sc, 0, 0x1b);
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scsi_cmd_set(udev, &sc, 4, 0x02);
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scsi_cmd_set(udev, &sc, 5, 0);
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err = scsi_cmd_run(udev, &sc, fd, NULL, 0);
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if ((err != 0)) {
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info_scsi_cmd_err(udev, "START_STOP_UNIT", err);
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return -1;
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}
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return 0;
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}
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static int cd_capability_compat(struct udev *udev, int fd)
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{
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int capability;
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capability = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
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if (capability < 0) {
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log_debug("CDROM_GET_CAPABILITY failed");
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return -1;
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}
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if (capability & CDC_CD_R)
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cd_cd_r = 1;
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if (capability & CDC_CD_RW)
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cd_cd_rw = 1;
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if (capability & CDC_DVD)
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cd_dvd_rom = 1;
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if (capability & CDC_DVD_R)
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cd_dvd_r = 1;
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if (capability & CDC_DVD_RAM)
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cd_dvd_ram = 1;
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if (capability & CDC_MRW)
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cd_mrw = 1;
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if (capability & CDC_MRW_W)
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cd_mrw_w = 1;
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return 0;
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}
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static int cd_media_compat(struct udev *udev, int fd)
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{
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if (ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT) != CDS_DISC_OK) {
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log_debug("CDROM_DRIVE_STATUS != CDS_DISC_OK");
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return -1;
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}
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cd_media = 1;
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return 0;
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}
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static int cd_inquiry(struct udev *udev, int fd)
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{
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struct scsi_cmd sc;
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unsigned char inq[128];
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int err;
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scsi_cmd_init(udev, &sc);
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scsi_cmd_set(udev, &sc, 0, 0x12);
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scsi_cmd_set(udev, &sc, 4, 36);
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scsi_cmd_set(udev, &sc, 5, 0);
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err = scsi_cmd_run(udev, &sc, fd, inq, 36);
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if ((err != 0)) {
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info_scsi_cmd_err(udev, "INQUIRY", err);
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return -1;
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}
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if ((inq[0] & 0x1F) != 5) {
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log_debug("not an MMC unit");
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return -1;
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}
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log_debug("INQUIRY: [%.8s][%.16s][%.4s]", inq + 8, inq + 16, inq + 32);
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return 0;
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}
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static void feature_profile_media(struct udev *udev, int cur_profile)
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{
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switch (cur_profile) {
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case 0x03:
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case 0x04:
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case 0x05:
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log_debug("profile 0x%02x ", cur_profile);
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cd_media = 1;
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cd_media_mo = 1;
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break;
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case 0x08:
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log_debug("profile 0x%02x media_cd_rom", cur_profile);
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cd_media = 1;
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cd_media_cd_rom = 1;
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break;
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case 0x09:
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log_debug("profile 0x%02x media_cd_r", cur_profile);
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cd_media = 1;
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cd_media_cd_r = 1;
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break;
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case 0x0a:
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log_debug("profile 0x%02x media_cd_rw", cur_profile);
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cd_media = 1;
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cd_media_cd_rw = 1;
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break;
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case 0x10:
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log_debug("profile 0x%02x media_dvd_ro", cur_profile);
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cd_media = 1;
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cd_media_dvd_rom = 1;
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break;
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case 0x11:
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log_debug("profile 0x%02x media_dvd_r", cur_profile);
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cd_media = 1;
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cd_media_dvd_r = 1;
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break;
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case 0x12:
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log_debug("profile 0x%02x media_dvd_ram", cur_profile);
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cd_media = 1;
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cd_media_dvd_ram = 1;
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break;
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case 0x13:
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log_debug("profile 0x%02x media_dvd_rw_ro", cur_profile);
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cd_media = 1;
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cd_media_dvd_rw = 1;
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cd_media_dvd_rw_ro = 1;
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break;
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case 0x14:
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log_debug("profile 0x%02x media_dvd_rw_seq", cur_profile);
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cd_media = 1;
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cd_media_dvd_rw = 1;
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cd_media_dvd_rw_seq = 1;
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break;
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case 0x1B:
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log_debug("profile 0x%02x media_dvd_plus_r", cur_profile);
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cd_media = 1;
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cd_media_dvd_plus_r = 1;
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break;
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case 0x1A:
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log_debug("profile 0x%02x media_dvd_plus_rw", cur_profile);
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cd_media = 1;
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cd_media_dvd_plus_rw = 1;
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break;
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case 0x2A:
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log_debug("profile 0x%02x media_dvd_plus_rw_dl", cur_profile);
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cd_media = 1;
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cd_media_dvd_plus_rw_dl = 1;
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break;
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case 0x2B:
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log_debug("profile 0x%02x media_dvd_plus_r_dl", cur_profile);
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cd_media = 1;
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cd_media_dvd_plus_r_dl = 1;
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break;
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case 0x40:
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log_debug("profile 0x%02x media_bd", cur_profile);
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cd_media = 1;
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cd_media_bd = 1;
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break;
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case 0x41:
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case 0x42:
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log_debug("profile 0x%02x media_bd_r", cur_profile);
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cd_media = 1;
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cd_media_bd_r = 1;
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break;
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case 0x43:
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log_debug("profile 0x%02x media_bd_re", cur_profile);
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cd_media = 1;
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cd_media_bd_re = 1;
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break;
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case 0x50:
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log_debug("profile 0x%02x media_hddvd", cur_profile);
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cd_media = 1;
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cd_media_hddvd = 1;
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break;
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case 0x51:
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log_debug("profile 0x%02x media_hddvd_r", cur_profile);
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cd_media = 1;
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cd_media_hddvd_r = 1;
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break;
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case 0x52:
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log_debug("profile 0x%02x media_hddvd_rw", cur_profile);
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cd_media = 1;
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cd_media_hddvd_rw = 1;
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break;
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default:
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log_debug("profile 0x%02x <ignored>", cur_profile);
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break;
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}
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}
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static int feature_profiles(struct udev *udev, const unsigned char *profiles, size_t size)
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{
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unsigned int i;
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for (i = 0; i+4 <= size; i += 4) {
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int profile;
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profile = profiles[i] << 8 | profiles[i+1];
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switch (profile) {
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case 0x03:
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case 0x04:
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case 0x05:
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log_debug("profile 0x%02x mo", profile);
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cd_mo = 1;
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break;
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case 0x08:
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log_debug("profile 0x%02x cd_rom", profile);
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cd_cd_rom = 1;
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break;
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case 0x09:
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log_debug("profile 0x%02x cd_r", profile);
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cd_cd_r = 1;
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break;
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case 0x0A:
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log_debug("profile 0x%02x cd_rw", profile);
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cd_cd_rw = 1;
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break;
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case 0x10:
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log_debug("profile 0x%02x dvd_rom", profile);
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cd_dvd_rom = 1;
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break;
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case 0x12:
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log_debug("profile 0x%02x dvd_ram", profile);
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cd_dvd_ram = 1;
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break;
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case 0x13:
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case 0x14:
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log_debug("profile 0x%02x dvd_rw", profile);
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cd_dvd_rw = 1;
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break;
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case 0x1B:
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log_debug("profile 0x%02x dvd_plus_r", profile);
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cd_dvd_plus_r = 1;
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break;
|
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case 0x1A:
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log_debug("profile 0x%02x dvd_plus_rw", profile);
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cd_dvd_plus_rw = 1;
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break;
|
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case 0x2A:
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log_debug("profile 0x%02x dvd_plus_rw_dl", profile);
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cd_dvd_plus_rw_dl = 1;
|
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break;
|
|
case 0x2B:
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log_debug("profile 0x%02x dvd_plus_r_dl", profile);
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cd_dvd_plus_r_dl = 1;
|
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break;
|
|
case 0x40:
|
|
cd_bd = 1;
|
|
log_debug("profile 0x%02x bd", profile);
|
|
break;
|
|
case 0x41:
|
|
case 0x42:
|
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cd_bd_r = 1;
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log_debug("profile 0x%02x bd_r", profile);
|
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break;
|
|
case 0x43:
|
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cd_bd_re = 1;
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log_debug("profile 0x%02x bd_re", profile);
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break;
|
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case 0x50:
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cd_hddvd = 1;
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log_debug("profile 0x%02x hddvd", profile);
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break;
|
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case 0x51:
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cd_hddvd_r = 1;
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log_debug("profile 0x%02x hddvd_r", profile);
|
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break;
|
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case 0x52:
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cd_hddvd_rw = 1;
|
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log_debug("profile 0x%02x hddvd_rw", profile);
|
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break;
|
|
default:
|
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log_debug("profile 0x%02x <ignored>", profile);
|
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break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* returns 0 if media was detected */
|
|
static int cd_profiles_old_mmc(struct udev *udev, int fd)
|
|
{
|
|
struct scsi_cmd sc;
|
|
int err;
|
|
|
|
unsigned char header[32];
|
|
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x51);
|
|
scsi_cmd_set(udev, &sc, 8, sizeof(header));
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
|
|
if (cd_media == 1) {
|
|
log_debug("no current profile, but disc is present; assuming CD-ROM");
|
|
cd_media_cd_rom = 1;
|
|
cd_media_track_count = 1;
|
|
cd_media_track_count_data = 1;
|
|
return 0;
|
|
} else {
|
|
log_debug("no current profile, assuming no media");
|
|
return -1;
|
|
}
|
|
};
|
|
|
|
cd_media = 1;
|
|
|
|
if (header[2] & 16) {
|
|
cd_media_cd_rw = 1;
|
|
log_debug("profile 0x0a media_cd_rw");
|
|
} else if ((header[2] & 3) < 2 && cd_cd_r) {
|
|
cd_media_cd_r = 1;
|
|
log_debug("profile 0x09 media_cd_r");
|
|
} else {
|
|
cd_media_cd_rom = 1;
|
|
log_debug("profile 0x08 media_cd_rom");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* returns 0 if media was detected */
|
|
static int cd_profiles(struct udev *udev, int fd)
|
|
{
|
|
struct scsi_cmd sc;
|
|
unsigned char features[65530];
|
|
unsigned int cur_profile = 0;
|
|
unsigned int len;
|
|
unsigned int i;
|
|
int err;
|
|
int ret;
|
|
|
|
ret = -1;
|
|
|
|
/* First query the current profile */
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x46);
|
|
scsi_cmd_set(udev, &sc, 8, 8);
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, features, 8);
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
|
|
/* handle pre-MMC2 drives which do not support GET CONFIGURATION */
|
|
if (SK(err) == 0x5 && (ASC(err) == 0x20 || ASC(err) == 0x24)) {
|
|
log_debug("drive is pre-MMC2 and does not support 46h get configuration command");
|
|
log_debug("trying to work around the problem");
|
|
ret = cd_profiles_old_mmc(udev, fd);
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
cur_profile = features[6] << 8 | features[7];
|
|
if (cur_profile > 0) {
|
|
log_debug("current profile 0x%02x", cur_profile);
|
|
feature_profile_media (udev, cur_profile);
|
|
ret = 0; /* we have media */
|
|
} else {
|
|
log_debug("no current profile, assuming no media");
|
|
}
|
|
|
|
len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
|
|
log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
|
|
|
|
if (len > sizeof(features)) {
|
|
log_debug("can not get features in a single query, truncating");
|
|
len = sizeof(features);
|
|
} else if (len <= 8) {
|
|
len = sizeof(features);
|
|
}
|
|
|
|
/* Now get the full feature buffer */
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x46);
|
|
scsi_cmd_set(udev, &sc, 7, ( len >> 8 ) & 0xff);
|
|
scsi_cmd_set(udev, &sc, 8, len & 0xff);
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, features, len);
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "GET CONFIGURATION", err);
|
|
return -1;
|
|
}
|
|
|
|
/* parse the length once more, in case the drive decided to have other features suddenly :) */
|
|
len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
|
|
log_debug("GET CONFIGURATION: size of features buffer 0x%04x", len);
|
|
|
|
if (len > sizeof(features)) {
|
|
log_debug("can not get features in a single query, truncating");
|
|
len = sizeof(features);
|
|
}
|
|
|
|
/* device features */
|
|
for (i = 8; i+4 < len; i += (4 + features[i+3])) {
|
|
unsigned int feature;
|
|
|
|
feature = features[i] << 8 | features[i+1];
|
|
|
|
switch (feature) {
|
|
case 0x00:
|
|
log_debug("GET CONFIGURATION: feature 'profiles', with %i entries", features[i+3] / 4);
|
|
feature_profiles(udev, &features[i]+4, MIN(features[i+3], len - i - 4));
|
|
break;
|
|
default:
|
|
log_debug("GET CONFIGURATION: feature 0x%04x <ignored>, with 0x%02x bytes", feature, features[i+3]);
|
|
break;
|
|
}
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int cd_media_info(struct udev *udev, int fd)
|
|
{
|
|
struct scsi_cmd sc;
|
|
unsigned char header[32];
|
|
static const char *media_status[] = {
|
|
"blank",
|
|
"appendable",
|
|
"complete",
|
|
"other"
|
|
};
|
|
int err;
|
|
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x51);
|
|
scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "READ DISC INFORMATION", err);
|
|
return -1;
|
|
};
|
|
|
|
cd_media = 1;
|
|
log_debug("disk type %02x", header[8]);
|
|
log_debug("hardware reported media status: %s", media_status[header[2] & 3]);
|
|
|
|
/* exclude plain CDROM, some fake cdroms return 0 for "blank" media here */
|
|
if (!cd_media_cd_rom)
|
|
cd_media_state = media_status[header[2] & 3];
|
|
|
|
/* fresh DVD-RW in restricted overwite mode reports itself as
|
|
* "appendable"; change it to "blank" to make it consistent with what
|
|
* gets reported after blanking, and what userspace expects */
|
|
if (cd_media_dvd_rw_ro && (header[2] & 3) == 1)
|
|
cd_media_state = media_status[0];
|
|
|
|
/* DVD+RW discs (and DVD-RW in restricted mode) once formatted are
|
|
* always "complete", DVD-RAM are "other" or "complete" if the disc is
|
|
* write protected; we need to check the contents if it is blank */
|
|
if ((cd_media_dvd_rw_ro || cd_media_dvd_plus_rw || cd_media_dvd_plus_rw_dl || cd_media_dvd_ram) && (header[2] & 3) > 1) {
|
|
unsigned char buffer[32 * 2048];
|
|
unsigned char result, len;
|
|
int block, offset;
|
|
|
|
if (cd_media_dvd_ram) {
|
|
/* a write protected dvd-ram may report "complete" status */
|
|
|
|
unsigned char dvdstruct[8];
|
|
unsigned char format[12];
|
|
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0xAD);
|
|
scsi_cmd_set(udev, &sc, 7, 0xC0);
|
|
scsi_cmd_set(udev, &sc, 9, sizeof(dvdstruct));
|
|
scsi_cmd_set(udev, &sc, 11, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, dvdstruct, sizeof(dvdstruct));
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "READ DVD STRUCTURE", err);
|
|
return -1;
|
|
}
|
|
if (dvdstruct[4] & 0x02) {
|
|
cd_media_state = media_status[2];
|
|
log_debug("write-protected DVD-RAM media inserted");
|
|
goto determined;
|
|
}
|
|
|
|
/* let's make sure we don't try to read unformatted media */
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x23);
|
|
scsi_cmd_set(udev, &sc, 8, sizeof(format));
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, format, sizeof(format));
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "READ DVD FORMAT CAPACITIES", err);
|
|
return -1;
|
|
}
|
|
|
|
len = format[3];
|
|
if (len & 7 || len < 16) {
|
|
log_debug("invalid format capacities length");
|
|
return -1;
|
|
}
|
|
|
|
switch(format[8] & 3) {
|
|
case 1:
|
|
log_debug("unformatted DVD-RAM media inserted");
|
|
/* This means that last format was interrupted
|
|
* or failed, blank dvd-ram discs are factory
|
|
* formatted. Take no action here as it takes
|
|
* quite a while to reformat a dvd-ram and it's
|
|
* not automatically started */
|
|
goto determined;
|
|
|
|
case 2:
|
|
log_debug("formatted DVD-RAM media inserted");
|
|
break;
|
|
|
|
case 3:
|
|
cd_media = 0; //return no media
|
|
log_debug("format capacities returned no media");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* Take a closer look at formatted media (unformatted DVD+RW
|
|
* has "blank" status", DVD-RAM was examined earlier) and check
|
|
* for ISO and UDF PVDs or a fs superblock presence and do it
|
|
* in one ioctl (we need just sectors 0 and 16) */
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x28);
|
|
scsi_cmd_set(udev, &sc, 5, 0);
|
|
scsi_cmd_set(udev, &sc, 8, 32);
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, buffer, sizeof(buffer));
|
|
if ((err != 0)) {
|
|
cd_media = 0;
|
|
info_scsi_cmd_err(udev, "READ FIRST 32 BLOCKS", err);
|
|
return -1;
|
|
}
|
|
|
|
/* if any non-zero data is found in sector 16 (iso and udf) or
|
|
* eventually 0 (fat32 boot sector, ext2 superblock, etc), disc
|
|
* is assumed non-blank */
|
|
result = 0;
|
|
|
|
for (block = 32768; block >= 0 && !result; block -= 32768) {
|
|
offset = block;
|
|
while (offset < (block + 2048) && !result) {
|
|
result = buffer [offset];
|
|
offset++;
|
|
}
|
|
}
|
|
|
|
if (!result) {
|
|
cd_media_state = media_status[0];
|
|
log_debug("no data in blocks 0 or 16, assuming blank");
|
|
} else {
|
|
log_debug("data in blocks 0 or 16, assuming complete");
|
|
}
|
|
}
|
|
|
|
determined:
|
|
/* "other" is e. g. DVD-RAM, can't append sessions there; DVDs in
|
|
* restricted overwrite mode can never append, only in sequential mode */
|
|
if ((header[2] & 3) < 2 && !cd_media_dvd_rw_ro)
|
|
cd_media_session_next = header[10] << 8 | header[5];
|
|
cd_media_session_count = header[9] << 8 | header[4];
|
|
cd_media_track_count = header[11] << 8 | header[6];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cd_media_toc(struct udev *udev, int fd)
|
|
{
|
|
struct scsi_cmd sc;
|
|
unsigned char header[12];
|
|
unsigned char toc[65536];
|
|
unsigned int len, i, num_tracks;
|
|
unsigned char *p;
|
|
int err;
|
|
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x43);
|
|
scsi_cmd_set(udev, &sc, 6, 1);
|
|
scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff);
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "READ TOC", err);
|
|
return -1;
|
|
}
|
|
|
|
len = (header[0] << 8 | header[1]) + 2;
|
|
log_debug("READ TOC: len: %d, start track: %d, end track: %d", len, header[2], header[3]);
|
|
if (len > sizeof(toc))
|
|
return -1;
|
|
if (len < 2)
|
|
return -1;
|
|
/* 2: first track, 3: last track */
|
|
num_tracks = header[3] - header[2] + 1;
|
|
|
|
/* empty media has no tracks */
|
|
if (len < 8)
|
|
return 0;
|
|
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x43);
|
|
scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */
|
|
scsi_cmd_set(udev, &sc, 7, (len >> 8) & 0xff);
|
|
scsi_cmd_set(udev, &sc, 8, len & 0xff);
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, toc, len);
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "READ TOC (tracks)", err);
|
|
return -1;
|
|
}
|
|
|
|
/* Take care to not iterate beyond the last valid track as specified in
|
|
* the TOC, but also avoid going beyond the TOC length, just in case
|
|
* the last track number is invalidly large */
|
|
for (p = toc+4, i = 4; i < len-8 && num_tracks > 0; i += 8, p += 8, --num_tracks) {
|
|
unsigned int block;
|
|
unsigned int is_data_track;
|
|
|
|
is_data_track = (p[1] & 0x04) != 0;
|
|
|
|
block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
|
|
log_debug("track=%u info=0x%x(%s) start_block=%u",
|
|
p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block);
|
|
|
|
if (is_data_track)
|
|
cd_media_track_count_data++;
|
|
else
|
|
cd_media_track_count_audio++;
|
|
}
|
|
|
|
scsi_cmd_init(udev, &sc);
|
|
scsi_cmd_set(udev, &sc, 0, 0x43);
|
|
scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */
|
|
scsi_cmd_set(udev, &sc, 8, sizeof(header));
|
|
scsi_cmd_set(udev, &sc, 9, 0);
|
|
err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header));
|
|
if ((err != 0)) {
|
|
info_scsi_cmd_err(udev, "READ TOC (multi session)", err);
|
|
return -1;
|
|
}
|
|
len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
|
|
log_debug("last track %u starts at block %u", header[4+2], len);
|
|
cd_media_session_last_offset = (unsigned long long int)len * 2048;
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct udev *udev;
|
|
static const struct option options[] = {
|
|
{ "lock-media", no_argument, NULL, 'l' },
|
|
{ "unlock-media", no_argument, NULL, 'u' },
|
|
{ "eject-media", no_argument, NULL, 'e' },
|
|
{ "debug", no_argument, NULL, 'd' },
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{}
|
|
};
|
|
bool eject = false;
|
|
bool lock = false;
|
|
bool unlock = false;
|
|
const char *node = NULL;
|
|
int fd = -1;
|
|
int cnt;
|
|
int rc = 0;
|
|
|
|
log_parse_environment();
|
|
log_open();
|
|
|
|
udev = udev_new();
|
|
if (udev == NULL)
|
|
goto exit;
|
|
|
|
while (1) {
|
|
int option;
|
|
|
|
option = getopt_long(argc, argv, "deluh", options, NULL);
|
|
if (option == -1)
|
|
break;
|
|
|
|
switch (option) {
|
|
case 'l':
|
|
lock = true;
|
|
break;
|
|
case 'u':
|
|
unlock = true;
|
|
break;
|
|
case 'e':
|
|
eject = true;
|
|
break;
|
|
case 'd':
|
|
log_set_target(LOG_TARGET_CONSOLE);
|
|
log_set_max_level(LOG_DEBUG);
|
|
log_open();
|
|
break;
|
|
case 'h':
|
|
printf("Usage: cdrom_id [options] <device>\n"
|
|
" --lock-media lock the media (to enable eject request events)\n"
|
|
" --unlock-media unlock the media\n"
|
|
" --eject-media eject the media\n"
|
|
" --debug debug to stderr\n"
|
|
" --help print this help text\n\n");
|
|
goto exit;
|
|
default:
|
|
rc = 1;
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
node = argv[optind];
|
|
if (!node) {
|
|
log_error("no device");
|
|
fprintf(stderr, "no device\n");
|
|
rc = 1;
|
|
goto exit;
|
|
}
|
|
|
|
initialize_srand();
|
|
for (cnt = 20; cnt > 0; cnt--) {
|
|
struct timespec duration;
|
|
|
|
fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC|(is_mounted(node) ? 0 : O_EXCL));
|
|
if (fd >= 0 || errno != EBUSY)
|
|
break;
|
|
duration.tv_sec = 0;
|
|
duration.tv_nsec = (100 * 1000 * 1000) + (rand() % 100 * 1000 * 1000);
|
|
nanosleep(&duration, NULL);
|
|
}
|
|
if (fd < 0) {
|
|
log_debug("unable to open '%s'", node);
|
|
fprintf(stderr, "unable to open '%s'\n", node);
|
|
rc = 1;
|
|
goto exit;
|
|
}
|
|
log_debug("probing: '%s'", node);
|
|
|
|
/* same data as original cdrom_id */
|
|
if (cd_capability_compat(udev, fd) < 0) {
|
|
rc = 1;
|
|
goto exit;
|
|
}
|
|
|
|
/* check for media - don't bail if there's no media as we still need to
|
|
* to read profiles */
|
|
cd_media_compat(udev, fd);
|
|
|
|
/* check if drive talks MMC */
|
|
if (cd_inquiry(udev, fd) < 0)
|
|
goto work;
|
|
|
|
/* read drive and possibly current profile */
|
|
if (cd_profiles(udev, fd) != 0)
|
|
goto work;
|
|
|
|
/* at this point we are guaranteed to have media in the drive - find out more about it */
|
|
|
|
/* get session/track info */
|
|
cd_media_toc(udev, fd);
|
|
|
|
/* get writable media state */
|
|
cd_media_info(udev, fd);
|
|
|
|
work:
|
|
/* lock the media, so we enable eject button events */
|
|
if (lock && cd_media) {
|
|
log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (lock)");
|
|
media_lock(udev, fd, true);
|
|
}
|
|
|
|
if (unlock && cd_media) {
|
|
log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)");
|
|
media_lock(udev, fd, false);
|
|
}
|
|
|
|
if (eject) {
|
|
log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)");
|
|
media_lock(udev, fd, false);
|
|
log_debug("START_STOP_UNIT (eject)");
|
|
media_eject(udev, fd);
|
|
}
|
|
|
|
printf("ID_CDROM=1\n");
|
|
if (cd_cd_rom)
|
|
printf("ID_CDROM_CD=1\n");
|
|
if (cd_cd_r)
|
|
printf("ID_CDROM_CD_R=1\n");
|
|
if (cd_cd_rw)
|
|
printf("ID_CDROM_CD_RW=1\n");
|
|
if (cd_dvd_rom)
|
|
printf("ID_CDROM_DVD=1\n");
|
|
if (cd_dvd_r)
|
|
printf("ID_CDROM_DVD_R=1\n");
|
|
if (cd_dvd_rw)
|
|
printf("ID_CDROM_DVD_RW=1\n");
|
|
if (cd_dvd_ram)
|
|
printf("ID_CDROM_DVD_RAM=1\n");
|
|
if (cd_dvd_plus_r)
|
|
printf("ID_CDROM_DVD_PLUS_R=1\n");
|
|
if (cd_dvd_plus_rw)
|
|
printf("ID_CDROM_DVD_PLUS_RW=1\n");
|
|
if (cd_dvd_plus_r_dl)
|
|
printf("ID_CDROM_DVD_PLUS_R_DL=1\n");
|
|
if (cd_dvd_plus_rw_dl)
|
|
printf("ID_CDROM_DVD_PLUS_RW_DL=1\n");
|
|
if (cd_bd)
|
|
printf("ID_CDROM_BD=1\n");
|
|
if (cd_bd_r)
|
|
printf("ID_CDROM_BD_R=1\n");
|
|
if (cd_bd_re)
|
|
printf("ID_CDROM_BD_RE=1\n");
|
|
if (cd_hddvd)
|
|
printf("ID_CDROM_HDDVD=1\n");
|
|
if (cd_hddvd_r)
|
|
printf("ID_CDROM_HDDVD_R=1\n");
|
|
if (cd_hddvd_rw)
|
|
printf("ID_CDROM_HDDVD_RW=1\n");
|
|
if (cd_mo)
|
|
printf("ID_CDROM_MO=1\n");
|
|
if (cd_mrw)
|
|
printf("ID_CDROM_MRW=1\n");
|
|
if (cd_mrw_w)
|
|
printf("ID_CDROM_MRW_W=1\n");
|
|
|
|
if (cd_media)
|
|
printf("ID_CDROM_MEDIA=1\n");
|
|
if (cd_media_mo)
|
|
printf("ID_CDROM_MEDIA_MO=1\n");
|
|
if (cd_media_mrw)
|
|
printf("ID_CDROM_MEDIA_MRW=1\n");
|
|
if (cd_media_mrw_w)
|
|
printf("ID_CDROM_MEDIA_MRW_W=1\n");
|
|
if (cd_media_cd_rom)
|
|
printf("ID_CDROM_MEDIA_CD=1\n");
|
|
if (cd_media_cd_r)
|
|
printf("ID_CDROM_MEDIA_CD_R=1\n");
|
|
if (cd_media_cd_rw)
|
|
printf("ID_CDROM_MEDIA_CD_RW=1\n");
|
|
if (cd_media_dvd_rom)
|
|
printf("ID_CDROM_MEDIA_DVD=1\n");
|
|
if (cd_media_dvd_r)
|
|
printf("ID_CDROM_MEDIA_DVD_R=1\n");
|
|
if (cd_media_dvd_ram)
|
|
printf("ID_CDROM_MEDIA_DVD_RAM=1\n");
|
|
if (cd_media_dvd_rw)
|
|
printf("ID_CDROM_MEDIA_DVD_RW=1\n");
|
|
if (cd_media_dvd_plus_r)
|
|
printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n");
|
|
if (cd_media_dvd_plus_rw)
|
|
printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n");
|
|
if (cd_media_dvd_plus_rw_dl)
|
|
printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n");
|
|
if (cd_media_dvd_plus_r_dl)
|
|
printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n");
|
|
if (cd_media_bd)
|
|
printf("ID_CDROM_MEDIA_BD=1\n");
|
|
if (cd_media_bd_r)
|
|
printf("ID_CDROM_MEDIA_BD_R=1\n");
|
|
if (cd_media_bd_re)
|
|
printf("ID_CDROM_MEDIA_BD_RE=1\n");
|
|
if (cd_media_hddvd)
|
|
printf("ID_CDROM_MEDIA_HDDVD=1\n");
|
|
if (cd_media_hddvd_r)
|
|
printf("ID_CDROM_MEDIA_HDDVD_R=1\n");
|
|
if (cd_media_hddvd_rw)
|
|
printf("ID_CDROM_MEDIA_HDDVD_RW=1\n");
|
|
|
|
if (cd_media_state != NULL)
|
|
printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state);
|
|
if (cd_media_session_next > 0)
|
|
printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next);
|
|
if (cd_media_session_count > 0)
|
|
printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count);
|
|
if (cd_media_session_count > 1 && cd_media_session_last_offset > 0)
|
|
printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset);
|
|
if (cd_media_track_count > 0)
|
|
printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count);
|
|
if (cd_media_track_count_audio > 0)
|
|
printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio);
|
|
if (cd_media_track_count_data > 0)
|
|
printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data);
|
|
exit:
|
|
if (fd >= 0)
|
|
close(fd);
|
|
udev_unref(udev);
|
|
log_close();
|
|
return rc;
|
|
}
|