/*
- * cdrom_id - determines the capabilities of cdrom drives
+ * cdrom_id - optical drive and media information prober
*
- * Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org>
*
- * 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 version 2 of the License.
+ * 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _GNU_SOURCE
#endif
#include <stdio.h>
+#include <stddef.h>
#include <stdlib.h>
#include <unistd.h>
+#include <string.h>
+#include <limits.h>
#include <fcntl.h>
-#include <ctype.h>
#include <errno.h>
-#include <sys/ioctl.h>
+#include <getopt.h>
+#include <time.h>
+#include <scsi/sg.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <linux/types.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <linux/cdrom.h>
-#include "../../logging.h"
-#include "../../udev_utils.h"
+#include "libudev.h"
+#include "libudev-private.h"
-/*
- * Taken from the cdrom.h kernel include file.
- * Included here as some distros don't have an updated version
- * with all of the DVD flags. So we just include our own, aren't
- * we so nice...
- */
-#define CDROM_GET_CAPABILITY 0x5331 /* get capabilities */
-
-/* capability flags used with the uniform CD-ROM driver */
-#define CDC_CLOSE_TRAY 0x1 /* caddy systems _can't_ close */
-#define CDC_OPEN_TRAY 0x2 /* but _can_ eject. */
-#define CDC_LOCK 0x4 /* disable manual eject */
-#define CDC_SELECT_SPEED 0x8 /* programmable speed */
-#define CDC_SELECT_DISC 0x10 /* select disc from juke-box */
-#define CDC_MULTI_SESSION 0x20 /* read sessions>1 */
-#define CDC_MCN 0x40 /* Medium Catalog Number */
-#define CDC_MEDIA_CHANGED 0x80 /* media changed */
-#define CDC_PLAY_AUDIO 0x100 /* audio functions */
-#define CDC_RESET 0x200 /* hard reset device */
-#define CDC_IOCTLS 0x400 /* driver has non-standard ioctls */
-#define CDC_DRIVE_STATUS 0x800 /* driver implements drive status */
-#define CDC_GENERIC_PACKET 0x1000 /* driver implements generic packets */
-#define CDC_CD_R 0x2000 /* drive is a CD-R */
-#define CDC_CD_RW 0x4000 /* drive is a CD-RW */
-#define CDC_DVD 0x8000 /* drive is a DVD */
-#define CDC_DVD_R 0x10000 /* drive can write DVD-R */
-#define CDC_DVD_RAM 0x20000 /* drive can write DVD-RAM */
-#define CDC_MO_DRIVE 0x40000 /* drive is an MO device */
-#define CDC_MRW 0x80000 /* drive can read MRW */
-#define CDC_MRW_W 0x100000 /* drive can write MRW */
-#define CDC_RAM 0x200000 /* ok to open for WRITE */
-
-#ifdef USE_LOG
-void log_message(int priority, const char *format, ...)
+static int debug;
+
+static void log_fn(struct udev *udev, int priority,
+ const char *file, int line, const char *fn,
+ const char *format, va_list args)
{
- va_list args;
- static int udev_log = -1;
+ if (debug) {
+ fprintf(stderr, "%s: ", fn);
+ vfprintf(stderr, format, args);
+ } else {
+ vsyslog(priority, format, args);
+ }
+}
- if (udev_log == -1) {
- const char *value;
+/* device info */
+static unsigned int cd_cd_rom = 0;
+static unsigned int cd_cd_r = 0;
+static unsigned int cd_cd_rw = 0;
+static unsigned int cd_dvd_rom = 0;
+static unsigned int cd_dvd_r = 0;
+static unsigned int cd_dvd_rw = 0;
+static unsigned int cd_dvd_ram = 0;
+static unsigned int cd_dvd_plus_r = 0;
+static unsigned int cd_dvd_plus_rw = 0;
+static unsigned int cd_dvd_plus_r_dl = 0;
+static unsigned int cd_dvd_plus_rw_dl = 0;
+static unsigned int cd_bd = 0;
+static unsigned int cd_bd_r = 0;
+static unsigned int cd_bd_re = 0;
+static unsigned int cd_hddvd = 0;
+static unsigned int cd_hddvd_r = 0;
+static unsigned int cd_hddvd_rw = 0;
+static unsigned int cd_mo = 0;
+static unsigned int cd_mrw = 0;
+static unsigned int cd_mrw_w = 0;
- value = getenv("UDEV_LOG");
- if (value)
- udev_log = log_priority(value);
- else
- udev_log = LOG_ERR;
+/* media info */
+static unsigned int cd_media = 0;
+static unsigned int cd_media_cd_rom = 0;
+static unsigned int cd_media_cd_r = 0;
+static unsigned int cd_media_cd_rw = 0;
+static unsigned int cd_media_dvd_rom = 0;
+static unsigned int cd_media_dvd_r = 0;
+static unsigned int cd_media_dvd_rw = 0;
+static unsigned int cd_media_dvd_rw_ro = 0; /* restricted overwrite mode */
+static unsigned int cd_media_dvd_rw_seq = 0; /* sequential mode */
+static unsigned int cd_media_dvd_ram = 0;
+static unsigned int cd_media_dvd_plus_r = 0;
+static unsigned int cd_media_dvd_plus_rw = 0;
+static unsigned int cd_media_dvd_plus_r_dl = 0;
+static unsigned int cd_media_dvd_plus_rw_dl = 0;
+static unsigned int cd_media_bd = 0;
+static unsigned int cd_media_bd_r = 0;
+static unsigned int cd_media_bd_re = 0;
+static unsigned int cd_media_hddvd = 0;
+static unsigned int cd_media_hddvd_r = 0;
+static unsigned int cd_media_hddvd_rw = 0;
+static unsigned int cd_media_mo = 0;
+static unsigned int cd_media_mrw = 0;
+static unsigned int cd_media_mrw_w = 0;
+
+static const char *cd_media_state = NULL;
+static unsigned int cd_media_session_next = 0;
+static unsigned int cd_media_session_count = 0;
+static unsigned int cd_media_track_count = 0;
+static unsigned int cd_media_track_count_data = 0;
+static unsigned int cd_media_track_count_audio = 0;
+static unsigned long long int cd_media_session_last_offset = 0;
+
+#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 int is_mounted(const char *device)
+{
+ struct stat statbuf;
+ FILE *fp;
+ int maj, min;
+ int mounted = 0;
+
+ if (stat(device, &statbuf) < 0)
+ return -ENODEV;
+
+ fp = fopen("/proc/self/mountinfo", "r");
+ if (fp == NULL)
+ return -ENOSYS;
+ while (fscanf(fp, "%*s %*s %i:%i %*[^\n]", &maj, &min) == 2) {
+ if (makedev(maj, min) == statbuf.st_rdev) {
+ mounted = 1;
+ break;
+ }
}
+ fclose(fp);
+ return mounted;
+}
- if (priority > udev_log)
+static void info_scsi_cmd_err(struct udev *udev, char *cmd, int err)
+{
+ if (err == -1) {
+ info(udev, "%s failed\n", cmd);
return;
+ }
+ info(udev, "%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;
+};
- va_start(args, format);
- vsyslog(priority, format, args);
- va_end(args);
+static void scsi_cmd_init(struct udev *udev, struct scsi_cmd *cmd, unsigned char *buf, size_t bufsize)
+{
+ memset(cmd, 0x00, sizeof(struct scsi_cmd));
+ memset(buf, 0x00, bufsize);
+ 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;
+}
+
+static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, unsigned char arg)
+{
+ cmd->sg_io.cmd_len = i + 1;
+ cmd->cgc.cmd[i] = arg;
+}
+
+#define CHECK_CONDITION 0x01
+
+static int scsi_cmd_run(struct udev *udev, 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(struct udev *udev, int fd)
+{
+ int capability;
+
+ capability = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
+ if (capability < 0) {
+ info(udev, "CDROM_GET_CAPABILITY failed\n");
+ return -1;
+ }
+
+ if (capability & CDC_CD_R)
+ cd_cd_r = 1;
+ if (capability & CDC_CD_RW)
+ cd_cd_rw = 1;
+ if (capability & CDC_DVD)
+ cd_dvd_rom = 1;
+ if (capability & CDC_DVD_R)
+ cd_dvd_r = 1;
+ if (capability & CDC_DVD_RAM)
+ cd_dvd_ram = 1;
+ if (capability & CDC_MRW)
+ cd_mrw = 1;
+ if (capability & CDC_MRW_W)
+ cd_mrw_w = 1;
+ return 0;
+}
+
+static int cd_media_compat(struct udev *udev, int fd)
+{
+ if (ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT) != CDS_DISC_OK) {
+ info(udev, "CDROM_DRIVE_STATUS != CDS_DISC_OK\n");
+ return -1;
+ }
+ cd_media = 1;
+ return 0;
+}
+
+static int cd_inquiry(struct udev *udev, int fd) {
+ struct scsi_cmd sc;
+ unsigned char inq[128];
+ int err;
+
+ scsi_cmd_init(udev, &sc, inq, sizeof(inq));
+ scsi_cmd_set(udev, &sc, 0, 0x12);
+ scsi_cmd_set(udev, &sc, 4, 36);
+ scsi_cmd_set(udev, &sc, 5, 0);
+ err = scsi_cmd_run(udev, &sc, fd, inq, 36);
+ if ((err != 0)) {
+ info_scsi_cmd_err(udev, "INQUIRY", err);
+ return -1;
+ }
+
+ if ((inq[0] & 0x1F) != 5) {
+ info(udev, "not an MMC unit\n");
+ return -1;
+ }
+
+ info(udev, "INQUIRY: [%.8s][%.16s][%.4s]\n", inq + 8, inq + 16, inq + 32);
+ return 0;
+}
+
+static int feature_profiles(struct udev *udev, const unsigned char *profiles, size_t size)
+{
+ unsigned int i;
+
+ for (i = 0; i+4 <= size; i += 4) {
+ int profile;
+
+ profile = profiles[i] << 8 | profiles[i+1];
+ switch (profile) {
+ case 0x03:
+ case 0x04:
+ case 0x05:
+ info(udev, "profile 0x%02x mo\n", profile);
+ cd_mo = 1;
+ break;
+ case 0x08:
+ info(udev, "profile 0x%02x cd_rom\n", profile);
+ cd_cd_rom = 1;
+ break;
+ case 0x09:
+ info(udev, "profile 0x%02x cd_r\n", profile);
+ cd_cd_r = 1;
+ break;
+ case 0x0A:
+ info(udev, "profile 0x%02x cd_rw\n", profile);
+ cd_cd_rw = 1;
+ break;
+ case 0x10:
+ info(udev, "profile 0x%02x dvd_rom\n", profile);
+ cd_dvd_rom = 1;
+ break;
+ case 0x12:
+ info(udev, "profile 0x%02x dvd_ram\n", profile);
+ cd_dvd_ram = 1;
+ break;
+ case 0x13:
+ info(udev, "profile 0x%02x media_dvd_rw\n", profile);
+ cd_media_dvd_rw = 1;
+ cd_media_dvd_rw_ro = 1;
+ break;
+ case 0x14:
+ info(udev, "profile 0x%02x dvd_rw\n", profile);
+ cd_dvd_rw = 1;
+ cd_media_dvd_rw_seq = 1;
+ break;
+ case 0x1B:
+ info(udev, "profile 0x%02x dvd_plus_r\n", profile);
+ cd_dvd_plus_r = 1;
+ break;
+ case 0x1A:
+ info(udev, "profile 0x%02x dvd_plus_rw\n", profile);
+ cd_dvd_plus_rw = 1;
+ break;
+ case 0x2A:
+ info(udev, "profile 0x%02x dvd_plus_rw_dl\n", profile);
+ cd_dvd_plus_rw_dl = 1;
+ break;
+ case 0x2B:
+ info(udev, "profile 0x%02x dvd_plus_r_dl\n", profile);
+ cd_dvd_plus_r_dl = 1;
+ break;
+ case 0x40:
+ cd_bd = 1;
+ info(udev, "profile 0x%02x bd\n", profile);
+ break;
+ case 0x41:
+ case 0x42:
+ cd_bd_r = 1;
+ info(udev, "profile 0x%02x bd_r\n", profile);
+ break;
+ case 0x43:
+ cd_bd_re = 1;
+ info(udev, "profile 0x%02x bd_re\n", profile);
+ break;
+ case 0x50:
+ cd_hddvd = 1;
+ info(udev, "profile 0x%02x hddvd\n", profile);
+ break;
+ case 0x51:
+ cd_hddvd_r = 1;
+ info(udev, "profile 0x%02x hddvd_r\n", profile);
+ break;
+ case 0x52:
+ cd_hddvd_rw = 1;
+ info(udev, "profile 0x%02x hddvd_rw\n", profile);
+ break;
+ default:
+ info(udev, "profile 0x%02x <ignored>\n", profile);
+ break;
+ }
+ }
+ return 0;
+}
+
+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, header, sizeof(header));
+ 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);
+ info(udev, "no current profile, assuming no media\n");
+ return -1;
+ };
+
+ cd_media = 1;
+
+ if (header[2] & 16) {
+ cd_media_cd_rw = 1;
+ info(udev, "profile 0x0a media_cd_rw\n");
+ }
+ else if ((header[2] & 3) < 2 && cd_cd_r) {
+ cd_media_cd_r = 1;
+ info(udev, "profile 0x09 media_cd_r\n");
+ }
+ else {
+ cd_media_cd_rom = 1;
+ info(udev, "profile 0x08 media_cd_rom\n");
+ }
+ return 0;
+}
+
+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;
+
+ scsi_cmd_init(udev, &sc, features, sizeof(features));
+ scsi_cmd_set(udev, &sc, 0, 0x46);
+ scsi_cmd_set(udev, &sc, 7, (sizeof(features) >> 8) & 0xff);
+ scsi_cmd_set(udev, &sc, 8, sizeof(features) & 0xff);
+ scsi_cmd_set(udev, &sc, 9, 0);
+ err = scsi_cmd_run(udev, &sc, fd, features, sizeof(features));
+ 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) {
+ info(udev, "drive is pre-MMC2 and does not support 46h get configuration command\n");
+ info(udev, "trying to work around the problem\n");
+ return cd_profiles_old_mmc(udev, fd);
+ }
+ return -1;
+ }
+
+ len = features[0] << 24 | features[1] << 16 | features[2] << 8 | features[3];
+ info(udev, "GET CONFIGURATION: size of features buffer 0x%04x\n", len);
+
+ if (len > sizeof(features)) {
+ info(udev, "can not get features in a single query, truncating\n");
+ 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:
+ info(udev, "GET CONFIGURATION: feature 'profiles', with %i entries\n", features[i+3] / 4);
+ feature_profiles(udev, &features[i]+4, features[i+3]);
+ break;
+ default:
+ info(udev, "GET CONFIGURATION: feature 0x%04x <ignored>, with 0x%02x bytes\n", feature, features[i+3]);
+ break;
+ }
+ }
+
+ cur_profile = features[6] << 8 | features[7];
+ if (cur_profile > 0) {
+ info(udev, "current profile 0x%02x\n", cur_profile);
+ } else {
+ info(udev, "no current profile, assuming no media\n");
+ return -1;
+ }
+
+ switch (cur_profile) {
+ case 0x03:
+ case 0x04:
+ case 0x05:
+ info(udev, "profile 0x%02x \n", cur_profile);
+ cd_media = 1;
+ cd_media_mo = 1;
+ break;
+ case 0x08:
+ info(udev, "profile 0x%02x media_cd_rom\n", cur_profile);
+ cd_media = 1;
+ cd_media_cd_rom = 1;
+ break;
+ case 0x09:
+ info(udev, "profile 0x%02x media_cd_r\n", cur_profile);
+ cd_media = 1;
+ cd_media_cd_r = 1;
+ break;
+ case 0x0a:
+ info(udev, "profile 0x%02x media_cd_rw\n", cur_profile);
+ cd_media = 1;
+ cd_media_cd_rw = 1;
+ break;
+ case 0x10:
+ info(udev, "profile 0x%02x media_dvd_ro\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_rom = 1;
+ break;
+ case 0x11:
+ info(udev, "profile 0x%02x media_dvd_r\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_r = 1;
+ break;
+ case 0x12:
+ info(udev, "profile 0x%02x media_dvd_ram\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_ram = 1;
+ break;
+ case 0x13:
+ case 0x14:
+ info(udev, "profile 0x%02x media_dvd_rw\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_rw = 1;
+ break;
+ case 0x1B:
+ info(udev, "profile 0x%02x media_dvd_plus_r\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_plus_r = 1;
+ break;
+ case 0x1A:
+ info(udev, "profile 0x%02x media_dvd_plus_rw\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_plus_rw = 1;
+ break;
+ case 0x2A:
+ info(udev, "profile 0x%02x media_dvd_plus_rw_dl\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_plus_rw_dl = 1;
+ break;
+ case 0x2B:
+ info(udev, "profile 0x%02x media_dvd_plus_r_dl\n", cur_profile);
+ cd_media = 1;
+ cd_media_dvd_plus_r_dl = 1;
+ break;
+ case 0x40:
+ info(udev, "profile 0x%02x media_bd\n", cur_profile);
+ cd_media = 1;
+ cd_media_bd = 1;
+ break;
+ case 0x41:
+ case 0x42:
+ info(udev, "profile 0x%02x media_bd_r\n", cur_profile);
+ cd_media = 1;
+ cd_media_bd_r = 1;
+ break;
+ case 0x43:
+ info(udev, "profile 0x%02x media_bd_re\n", cur_profile);
+ cd_media = 1;
+ cd_media_bd_re = 1;
+ break;
+ case 0x50:
+ info(udev, "profile 0x%02x media_hddvd\n", cur_profile);
+ cd_media = 1;
+ cd_media_hddvd = 1;
+ break;
+ case 0x51:
+ info(udev, "profile 0x%02x media_hddvd_r\n", cur_profile);
+ cd_media = 1;
+ cd_media_hddvd_r = 1;
+ break;
+ case 0x52:
+ info(udev, "profile 0x%02x media_hddvd_rw\n", cur_profile);
+ cd_media = 1;
+ cd_media_hddvd_rw = 1;
+ break;
+ default:
+ info(udev, "profile 0x%02x <ignored>\n", cur_profile);
+ break;
+ }
+ return 0;
+}
+
+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, header, sizeof(header));
+ 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;
+ info(udev, "disk type %02x\n", header[8]);
+
+ /* 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[17 * 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, dvdstruct, sizeof(dvdstruct));
+ 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];
+ info(udev, "write-protected DVD-RAM media inserted\n");
+ goto determined;
+ }
+
+ /* let's make sure we don't try to read unformatted media */
+ scsi_cmd_init(udev, &sc, format, sizeof(format));
+ 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) {
+ info(udev, "invalid format capacities length\n");
+ return -1;
+ }
+
+ switch(format[8] & 3) {
+ case 1:
+ info(udev, "unformatted DVD-RAM media inserted\n");
+ /* 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:
+ info(udev, "formatted DVD-RAM media inserted\n");
+ break;
+
+ case 3:
+ cd_media = 0; //return no media
+ info(udev, "format capacities returned no media\n");
+ 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, buffer, sizeof(buffer));
+ scsi_cmd_set(udev, &sc, 0, 0x28);
+ scsi_cmd_set(udev, &sc, 5, 0);
+ scsi_cmd_set(udev, &sc, 8, 17);
+ scsi_cmd_set(udev, &sc, 9, 0);
+ err = scsi_cmd_run(udev, &sc, fd, buffer, sizeof(buffer));
+ if ((err != 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];
+ info(udev, "no data in blocks 0 or 16, assuming blank\n");
+ } else {
+ info(udev, "data in blocks 0 or 16, assuming complete\n");
+ }
+ }
+
+determined:
+ /* "other" is e. g. DVD-RAM, can't append sessions there either */
+ 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(struct udev *udev, 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_init(udev, &sc, header, sizeof(header));
+ 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;
+ info(udev, "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_init(udev, &sc, toc, sizeof(toc));
+ 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;
+ }
+
+ 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(udev, "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_init(udev, &sc, header, sizeof(header));
+ 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];
+ info(udev, "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;
}
-#endif
int main(int argc, char *argv[])
{
+ struct udev *udev;
+ static const struct option options[] = {
+ { "export", no_argument, NULL, 'x' },
+ { "debug", no_argument, NULL, 'd' },
+ { "help", no_argument, NULL, 'h' },
+ {}
+ };
const char *node = NULL;
- int i;
int export = 0;
- int fd;
+ int fd = -1;
+ int cnt;
int rc = 0;
- int result;
- logging_init("cdrom_id");
+ udev = udev_new();
+ if (udev == NULL)
+ goto exit;
+
+ udev_log_init("cdrom_id");
+ udev_set_log_fn(udev, log_fn);
+
+ while (1) {
+ int option;
- for (i = 1 ; i < argc; i++) {
- char *arg = argv[i];
+ option = getopt_long(argc, argv, "dxh", options, NULL);
+ if (option == -1)
+ break;
- if (strcmp(arg, "--export") == 0) {
+ switch (option) {
+ case 'd':
+ debug = 1;
+ if (udev_get_log_priority(udev) < LOG_INFO)
+ udev_set_log_priority(udev, LOG_INFO);
+ break;
+ case 'x':
export = 1;
- } else
- node = arg;
+ break;
+ case 'h':
+ printf("Usage: cdrom_id [options] <device>\n"
+ " --export export key/value pairs\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) {
- info("no node specified");
+ err(udev, "no device\n");
+ fprintf(stderr, "no device\n");
rc = 1;
goto exit;
}
- fd = open(node, O_RDONLY|O_NONBLOCK);
+ srand((unsigned int)getpid());
+ for (cnt = 20; cnt > 0; cnt--) {
+ struct timespec duration;
+
+ fd = open(node, O_RDONLY|O_NONBLOCK|(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) {
- info("unable to open '%s'", node);
+ info(udev, "unable to open '%s'\n", node);
+ fprintf(stderr, "unable to open '%s'\n", node);
rc = 1;
goto exit;
}
+ info(udev, "probing: '%s'\n", node);
- result = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
- if (result < 0) {
- info("CDROM_GET_CAPABILITY failed for '%s'", node);
- rc = 3;
- goto close;
+ /* same data as original cdrom_id */
+ if (cd_capability_compat(udev, fd) < 0) {
+ rc = 1;
+ goto exit;
}
- printf("ID_CDROM=1\n");
+ /* 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 print;
- if (result & CDC_CD_R)
+ /* read drive and possibly current profile */
+ if (cd_profiles(udev, fd) < 0)
+ goto print;
+
+ /* get writable media state */
+ if (cd_media_info(udev, fd) < 0)
+ goto print;
+
+ /* get session/track info */
+ if (cd_media_toc(udev, fd) < 0)
+ goto print;
+
+print:
+ 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 (result & CDC_CD_RW)
+ if (cd_cd_rw)
printf("ID_CDROM_CD_RW=1\n");
-
- if (result & CDC_DVD)
+ if (cd_dvd_rom)
printf("ID_CDROM_DVD=1\n");
- if (result & CDC_DVD_R)
+ if (cd_dvd_r)
printf("ID_CDROM_DVD_R=1\n");
- if (result & CDC_DVD_RAM)
+ if (cd_dvd_rw)
+ printf("ID_CDROM_DVD_RW=1\n");
+ if (cd_dvd_ram)
printf("ID_CDROM_DVD_RAM=1\n");
-
- if (result & CDC_MRW)
+ 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 (result & CDC_MRW_W)
+ if (cd_mrw_w)
printf("ID_CDROM_MRW_W=1\n");
- if (result & CDC_RAM)
- printf("ID_CDROM_RAM=1\n");
-close:
- close(fd);
+ 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:
- logging_close();
+ if (fd >= 0)
+ close(fd);
+ udev_unref(udev);
+ udev_log_close();
return rc;
}
+
~ianmdlvl / elogind.git / blobdiff