+/* device info */
+static unsigned int cd_cd_rom;
+static unsigned int cd_cd_r;
+static unsigned int cd_cd_rw;
+static unsigned int cd_dvd_rom;
+static unsigned int cd_dvd_r;
+static unsigned int cd_dvd_rw;
+static unsigned int cd_dvd_ram;
+static unsigned int cd_dvd_plus_r;
+static unsigned int cd_dvd_plus_rw;
+static unsigned int cd_dvd_plus_r_dl;
+static unsigned int cd_dvd_plus_rw_dl;
+static unsigned int cd_bd;
+static unsigned int cd_bd_r;
+static unsigned int cd_bd_re;
+static unsigned int cd_hddvd;
+static unsigned int cd_hddvd_r;
+static unsigned int cd_hddvd_rw;
+static unsigned int cd_mo;
+static unsigned int cd_mrw;
+static unsigned int cd_mrw_w;
+
+/* media info */
+static unsigned int cd_media_cd_rom;
+static unsigned int cd_media_cd_r;
+static unsigned int cd_media_cd_rw;
+static unsigned int cd_media_dvd_rom;
+static unsigned int cd_media_dvd_r;
+static unsigned int cd_media_dvd_rw;
+static unsigned int cd_media_dvd_ram;
+static unsigned int cd_media_dvd_plus_r;
+static unsigned int cd_media_dvd_plus_rw;
+static unsigned int cd_media_dvd_plus_r_dl;
+static unsigned int cd_media_dvd_plus_rw_dl;
+static unsigned int cd_media_bd;
+static unsigned int cd_media_bd_r;
+static unsigned int cd_media_bd_re;
+static unsigned int cd_media_hddvd;
+static unsigned int cd_media_hddvd_r;
+static unsigned int cd_media_hddvd_rw;
+static unsigned int cd_media_mo;
+static unsigned int cd_media_mrw;
+static unsigned int cd_media_mrw_w;
+
+static const char *cd_media_state;
+static unsigned int cd_media_session_next;
+static unsigned int cd_media_session_count;
+static unsigned int cd_media_track_count;
+static unsigned int cd_media_track_count_data;
+static unsigned int cd_media_track_count_audio;
+static unsigned long long int cd_media_session_last_offset;
+
+#define ERRCODE(s) ((((s)[2] & 0x0F) << 16) | ((s)[12] << 8) | ((s)[13]))
+#define SK(errcode) (((errcode) >> 16) & 0xF)
+#define ASC(errcode) (((errcode) >> 8) & 0xFF)
+#define ASCQ(errcode) ((errcode) & 0xFF)
+
+static void info_scsi_cmd_err(const char *cmd, int err)
+{
+ if (err == -1) {
+ info("%s failed\n", cmd);
+ return;
+ }
+ info("%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh\n", cmd, SK(err), ASC(err), ASCQ(err));
+}
+
+struct scsi_cmd {
+ struct cdrom_generic_command cgc;
+ union {
+ struct request_sense s;
+ unsigned char u[18];
+ } _sense;
+ struct sg_io_hdr sg_io;
+};
+
+static void scsi_cmd_set(struct scsi_cmd *cmd, size_t i, int arg)
+{
+ if (i == 0) {
+ memset(cmd, 0x00, sizeof(struct scsi_cmd));
+ cmd->cgc.quiet = 1;
+ cmd->cgc.sense = &cmd->_sense.s;
+ memset(&cmd->sg_io, 0, sizeof(cmd->sg_io));
+ cmd->sg_io.interface_id = 'S';
+ cmd->sg_io.mx_sb_len = sizeof(cmd->_sense);
+ cmd->sg_io.cmdp = cmd->cgc.cmd;
+ cmd->sg_io.sbp = cmd->_sense.u;
+ cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO;
+ }
+ cmd->sg_io.cmd_len = i + 1;
+ cmd->cgc.cmd[i] = arg;
+}
+
+#define CHECK_CONDITION 0x01
+
+static int scsi_cmd_run(struct scsi_cmd *cmd, int fd, unsigned char *buf, size_t bufsize)
+{
+ int ret = 0;
+
+ cmd->sg_io.dxferp = buf;
+ cmd->sg_io.dxfer_len = bufsize;
+ cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
+ if (ioctl(fd, SG_IO, &cmd->sg_io))
+ return -1;
+
+ if ((cmd->sg_io.info & SG_INFO_OK_MASK) != SG_INFO_OK) {
+ errno = EIO;
+ ret = -1;
+ if (cmd->sg_io.masked_status & CHECK_CONDITION) {
+ ret = ERRCODE(cmd->_sense.u);
+ if (ret == 0)
+ ret = -1;
+ }
+ }
+ return ret;
+}
+
+static int cd_capability_compat(int fd)
+{
+ int capabilty;
+
+ capabilty = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
+ if (capabilty < 0) {
+ info("CDROM_GET_CAPABILITY failed\n");
+ return -1;
+ }
+
+ if (capabilty & CDC_CD_R)
+ cd_cd_r = 1;
+ if (capabilty & CDC_CD_RW)
+ cd_cd_rw = 1;
+ if (capabilty & CDC_DVD)
+ cd_dvd_rom = 1;
+ if (capabilty & CDC_DVD_R)
+ cd_dvd_r = 1;
+ if (capabilty & CDC_DVD_RAM)
+ cd_dvd_ram = 1;
+ if (capabilty & CDC_MRW)
+ cd_mrw = 1;
+ if (capabilty & CDC_MRW_W)
+ cd_mrw_w = 1;
+ return 0;
+}
+
+static int cd_inquiry(int fd) {
+ struct scsi_cmd sc;
+ unsigned char inq[128];
+ int err;
+
+ scsi_cmd_set(&sc, 0, 0x12);
+ scsi_cmd_set(&sc, 4, 36);
+ scsi_cmd_set(&sc, 5, 0);
+ err = scsi_cmd_run(&sc, fd, inq, 36);
+ if ((err < 0)) {
+ info_scsi_cmd_err("INQUIRY", err);
+ return -1;
+ }
+
+ if ((inq[0] & 0x1F) != 5) {
+ info("not an MMC unit\n");
+ return -1;
+ }
+
+ info("INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
+ return 0;
+}
+
+static int cd_profiles(int fd)
+{
+ struct scsi_cmd sc;
+ unsigned char header[8];
+ unsigned char profiles[512];
+ unsigned int cur_profile;
+ unsigned int len;
+ unsigned int i;
+ int err;
+
+ scsi_cmd_set(&sc, 0, 0x46);
+ scsi_cmd_set(&sc, 1, 0);
+ scsi_cmd_set(&sc, 8, sizeof(header));
+ scsi_cmd_set(&sc, 9, 0);
+ err = scsi_cmd_run(&sc, fd, header, sizeof(header));
+ if ((err < 0)) {
+ info_scsi_cmd_err("GET CONFIGURATION", err);
+ return -1;
+ }
+
+ len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]);
+ info("GET CONFIGURATION: number of profiles %i\n", len);
+ if (len > sizeof(profiles)) {
+ info("invalid number of profiles\n");
+ return -1;
+ }
+
+ scsi_cmd_set(&sc, 0, 0x46);
+ scsi_cmd_set(&sc, 1, 1);
+ scsi_cmd_set(&sc, 6, len >> 16);
+ scsi_cmd_set(&sc, 7, len >> 8);
+ scsi_cmd_set(&sc, 8, len);
+ scsi_cmd_set(&sc, 9, 0);
+ err = scsi_cmd_run(&sc, fd, profiles, len);
+ if ((err < 0)) {
+ info_scsi_cmd_err("GET CONFIGURATION", err);
+ return -1;
+ }
+
+ /* device profiles */
+ for (i = 12; i < profiles[11]; i += 4) {
+ unsigned int profile = (profiles[i] << 8 | profiles[i + 1]);
+ if (profile == 0)
+ continue;
+ info("profile 0x%02x\n", profile);
+
+ switch (profile) {
+ case 0x03:
+ case 0x04:
+ case 0x05:
+ cd_mo = 1;
+ break;
+ case 0x10:
+ cd_dvd_rom = 1;
+ break;
+ case 0x12:
+ cd_dvd_ram = 1;
+ break;
+ case 0x13:
+ case 0x14:
+ cd_dvd_rw = 1;
+ break;
+ case 0x1B:
+ cd_dvd_plus_r = 1;
+ break;
+ case 0x1A:
+ cd_dvd_plus_rw = 1;
+ break;
+ case 0x2A:
+ cd_dvd_plus_rw_dl = 1;
+ break;
+ case 0x2B:
+ cd_dvd_plus_r_dl = 1;
+ break;
+ case 0x40:
+ cd_bd = 1;
+ break;
+ case 0x41:
+ case 0x42:
+ cd_bd_r = 1;
+ break;
+ case 0x43:
+ cd_bd_re = 1;
+ break;
+ case 0x50:
+ cd_hddvd = 1;
+ break;
+ case 0x51:
+ cd_hddvd_r = 1;
+ break;
+ case 0x52:
+ cd_hddvd_rw = 1;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* current media profile */
+ cur_profile = header[6] << 8 | header[7];
+ info("current profile 0x%02x\n", cur_profile);
+ if (cur_profile == 0) {
+ info("no current profile, assuming no media\n");
+ return -1;
+ }
+
+ switch (cur_profile) {
+ case 0x03:
+ case 0x04:
+ case 0x05:
+ cd_media_mo = 1;
+ break;
+ case 0x08:
+ cd_media_cd_rom = 1;
+ break;
+ case 0x09:
+ cd_media_cd_r = 1;
+ break;
+ case 0x0a:
+ cd_media_cd_rw = 1;
+ break;
+ case 0x10:
+ cd_media_dvd_rom = 1;
+ break;
+ case 0x11:
+ cd_media_dvd_r = 1;
+ break;
+ case 0x12:
+ cd_media_dvd_ram = 1;
+ break;
+ case 0x13:
+ case 0x14:
+ cd_media_dvd_rw = 1;
+ break;
+ case 0x1B:
+ cd_media_dvd_plus_r = 1;
+ break;
+ case 0x1A:
+ cd_media_dvd_plus_rw = 1;
+ break;
+ case 0x2A:
+ cd_media_dvd_plus_rw_dl = 1;
+ break;
+ case 0x2B:
+ cd_media_dvd_plus_r_dl = 1;
+ break;
+ case 0x40:
+ cd_media_bd = 1;
+ break;
+ case 0x41:
+ case 0x42:
+ cd_media_bd_r = 1;
+ break;
+ case 0x43:
+ cd_media_bd_re = 1;
+ break;
+ case 0x50:
+ cd_media_hddvd = 1;
+ break;
+ case 0x51:
+ cd_media_hddvd_r = 1;
+ break;
+ case 0x52:
+ cd_media_hddvd_rw = 1;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int cd_media_info(int fd)
+{
+ struct scsi_cmd sc;
+ unsigned char header[32];
+ static const char *media_status[] = {
+ "blank",
+ "appendable",
+ "complete",
+ "other"
+ };
+ int err;
+
+ scsi_cmd_set(&sc, 0, 0x51);
+ scsi_cmd_set(&sc, 8, sizeof(header));
+ scsi_cmd_set(&sc, 9, 0);
+ err = scsi_cmd_run(&sc, fd, header, sizeof(header));
+ if ((err < 0)) {
+ info_scsi_cmd_err("READ DISC INFORMATION", err);
+ return -1;
+ };
+
+ info("disk type %02x\n", header[8]);
+
+ if ((header[2] & 3) < 4)
+ cd_media_state = media_status[header[2] & 3];
+ if ((header[2] & 3) != 2)
+ 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(int fd)
+{
+ struct scsi_cmd sc;
+ unsigned char header[12];
+ unsigned char toc[2048];
+ unsigned int len, i;
+ unsigned char *p;
+ int err;
+
+ scsi_cmd_set(&sc, 0, 0x43);
+ scsi_cmd_set(&sc, 6, 1);
+ scsi_cmd_set(&sc, 8, sizeof(header));
+ scsi_cmd_set(&sc, 9, 0);
+ err = scsi_cmd_run(&sc, fd, header, sizeof(header));
+ if ((err < 0)) {
+ info_scsi_cmd_err("READ TOC", err);
+ return -1;
+ }
+
+ len = (header[0] << 8 | header[1]) + 2;
+ info("READ TOC: len: %d\n", len);
+ if (len > sizeof(toc))
+ return -1;
+ if (len < 2)
+ return -1;
+
+ /* empty media has no tracks */
+ if (len < 8)
+ return 0;
+
+ scsi_cmd_set(&sc, 0, 0x43);
+ scsi_cmd_set(&sc, 6, header[2]); /* First Track/Session Number */
+ scsi_cmd_set(&sc, 7, len >> 8);
+ scsi_cmd_set(&sc, 8, len);
+ scsi_cmd_set(&sc, 9, 0);
+ err = scsi_cmd_run(&sc, fd, toc, len);
+ if ((err < 0)) {
+ info_scsi_cmd_err("READ TOC (tracks)", err);
+ return -1;
+ }
+
+ for (p = toc+4, i = 4; i < len-8; i += 8, p += 8) {
+ 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];
+ info("track=%u info=0x%x(%s) start_block=%u\n",
+ 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_set(&sc, 0, 0x43);
+ scsi_cmd_set(&sc, 2, 1); /* Session Info */
+ scsi_cmd_set(&sc, 8, 12);
+ scsi_cmd_set(&sc, 9, 0);
+ err = scsi_cmd_run(&sc, fd, header, sizeof(header));
+ if ((err < 0)) {
+ info_scsi_cmd_err("READ TOC (multi session)", err);
+ return -1;
+ }
+ len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7];
+ info("last track %u starts at block %u\n", header[4+2], len);
+ cd_media_session_last_offset = (unsigned long long int)len * 2048;
+ return 0;
+}
+