+++ /dev/null
-/*
- * cdrom_id - optical drive and media information prober
- *
- * Copyright (C) 2008-2010 Kay Sievers <kay@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, 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/>.
- */
-
-#include <stdio.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <limits.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <getopt.h>
-#include <time.h>
-#include <scsi/sg.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <linux/cdrom.h>
-
-#include "libudev.h"
-#include "libudev-private.h"
-
-/* 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;
-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_rw_ro; /* restricted overwrite mode */
-static unsigned int cd_media_dvd_rw_seq; /* sequential mode */
-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 = NULL;
-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 bool is_mounted(const char *device)
-{
- struct stat statbuf;
- FILE *fp;
- int maj, min;
- bool mounted = false;
-
- if (stat(device, &statbuf) < 0)
- return -ENODEV;
-
- fp = fopen("/proc/self/mountinfo", "re");
- if (fp == NULL)
- return -ENOSYS;
- while (fscanf(fp, "%*s %*s %i:%i %*[^\n]", &maj, &min) == 2) {
- if (makedev(maj, min) == statbuf.st_rdev) {
- mounted = true;
- break;
- }
- }
- fclose(fp);
- return mounted;
-}
-
-static void info_scsi_cmd_err(struct udev *udev, const char *cmd, int err)
-{
- if (err == -1) {
- log_debug("%s failed", cmd);
- return;
- }
- log_debug("%s failed with SK=%Xh/ASC=%02Xh/ACQ=%02Xh", 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_init(struct udev *udev, struct scsi_cmd *cmd)
-{
- memzero(cmd, sizeof(struct scsi_cmd));
- cmd->cgc.quiet = 1;
- cmd->cgc.sense = &cmd->_sense.s;
- 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;
-
- if (bufsize > 0) {
- cmd->sg_io.dxferp = buf;
- cmd->sg_io.dxfer_len = bufsize;
- cmd->sg_io.dxfer_direction = SG_DXFER_FROM_DEV;
- } else {
- cmd->sg_io.dxfer_direction = SG_DXFER_NONE;
- }
- 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 media_lock(struct udev *udev, int fd, bool lock)
-{
- int err;
-
- /* disable the kernel's lock logic */
- err = ioctl(fd, CDROM_CLEAR_OPTIONS, CDO_LOCK);
- if (err < 0)
- log_debug("CDROM_CLEAR_OPTIONS, CDO_LOCK failed");
-
- err = ioctl(fd, CDROM_LOCKDOOR, lock ? 1 : 0);
- if (err < 0)
- log_debug("CDROM_LOCKDOOR failed");
-
- return err;
-}
-
-static int media_eject(struct udev *udev, int fd)
-{
- struct scsi_cmd sc;
- int err;
-
- scsi_cmd_init(udev, &sc);
- scsi_cmd_set(udev, &sc, 0, 0x1b);
- scsi_cmd_set(udev, &sc, 4, 0x02);
- scsi_cmd_set(udev, &sc, 5, 0);
- err = scsi_cmd_run(udev, &sc, fd, NULL, 0);
- if ((err != 0)) {
- info_scsi_cmd_err(udev, "START_STOP_UNIT", err);
- return -1;
- }
- return 0;
-}
-
-static int cd_capability_compat(struct udev *udev, int fd)
-{
- int capability;
-
- capability = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
- if (capability < 0) {
- log_debug("CDROM_GET_CAPABILITY failed");
- 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) {
- log_debug("CDROM_DRIVE_STATUS != CDS_DISC_OK");
- 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);
- 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) {
- log_debug("not an MMC unit");
- return -1;
- }
-
- log_debug("INQUIRY: [%.8s][%.16s][%.4s]", inq + 8, inq + 16, inq + 32);
- return 0;
-}
-
-static void feature_profile_media(struct udev *udev, int cur_profile)
-{
- switch (cur_profile) {
- case 0x03:
- case 0x04:
- case 0x05:
- log_debug("profile 0x%02x ", cur_profile);
- cd_media = 1;
- cd_media_mo = 1;
- break;
- case 0x08:
- log_debug("profile 0x%02x media_cd_rom", cur_profile);
- cd_media = 1;
- cd_media_cd_rom = 1;
- break;
- case 0x09:
- log_debug("profile 0x%02x media_cd_r", cur_profile);
- cd_media = 1;
- cd_media_cd_r = 1;
- break;
- case 0x0a:
- log_debug("profile 0x%02x media_cd_rw", cur_profile);
- cd_media = 1;
- cd_media_cd_rw = 1;
- break;
- case 0x10:
- log_debug("profile 0x%02x media_dvd_ro", cur_profile);
- cd_media = 1;
- cd_media_dvd_rom = 1;
- break;
- case 0x11:
- log_debug("profile 0x%02x media_dvd_r", cur_profile);
- cd_media = 1;
- cd_media_dvd_r = 1;
- break;
- case 0x12:
- log_debug("profile 0x%02x media_dvd_ram", cur_profile);
- cd_media = 1;
- cd_media_dvd_ram = 1;
- break;
- case 0x13:
- log_debug("profile 0x%02x media_dvd_rw_ro", cur_profile);
- cd_media = 1;
- cd_media_dvd_rw = 1;
- cd_media_dvd_rw_ro = 1;
- break;
- case 0x14:
- log_debug("profile 0x%02x media_dvd_rw_seq", cur_profile);
- cd_media = 1;
- cd_media_dvd_rw = 1;
- cd_media_dvd_rw_seq = 1;
- break;
- case 0x1B:
- log_debug("profile 0x%02x media_dvd_plus_r", cur_profile);
- cd_media = 1;
- cd_media_dvd_plus_r = 1;
- break;
- case 0x1A:
- log_debug("profile 0x%02x media_dvd_plus_rw", cur_profile);
- cd_media = 1;
- cd_media_dvd_plus_rw = 1;
- break;
- case 0x2A:
- log_debug("profile 0x%02x media_dvd_plus_rw_dl", cur_profile);
- cd_media = 1;
- cd_media_dvd_plus_rw_dl = 1;
- break;
- case 0x2B:
- log_debug("profile 0x%02x media_dvd_plus_r_dl", cur_profile);
- cd_media = 1;
- cd_media_dvd_plus_r_dl = 1;
- break;
- case 0x40:
- log_debug("profile 0x%02x media_bd", cur_profile);
- cd_media = 1;
- cd_media_bd = 1;
- break;
- case 0x41:
- case 0x42:
- log_debug("profile 0x%02x media_bd_r", cur_profile);
- cd_media = 1;
- cd_media_bd_r = 1;
- break;
- case 0x43:
- log_debug("profile 0x%02x media_bd_re", cur_profile);
- cd_media = 1;
- cd_media_bd_re = 1;
- break;
- case 0x50:
- log_debug("profile 0x%02x media_hddvd", cur_profile);
- cd_media = 1;
- cd_media_hddvd = 1;
- break;
- case 0x51:
- log_debug("profile 0x%02x media_hddvd_r", cur_profile);
- cd_media = 1;
- cd_media_hddvd_r = 1;
- break;
- case 0x52:
- log_debug("profile 0x%02x media_hddvd_rw", cur_profile);
- cd_media = 1;
- cd_media_hddvd_rw = 1;
- break;
- default:
- log_debug("profile 0x%02x <ignored>", cur_profile);
- break;
- }
-}
-
-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:
- log_debug("profile 0x%02x mo", profile);
- cd_mo = 1;
- break;
- case 0x08:
- log_debug("profile 0x%02x cd_rom", profile);
- cd_cd_rom = 1;
- break;
- case 0x09:
- log_debug("profile 0x%02x cd_r", profile);
- cd_cd_r = 1;
- break;
- case 0x0A:
- log_debug("profile 0x%02x cd_rw", profile);
- cd_cd_rw = 1;
- break;
- case 0x10:
- log_debug("profile 0x%02x dvd_rom", profile);
- cd_dvd_rom = 1;
- break;
- case 0x12:
- log_debug("profile 0x%02x dvd_ram", profile);
- cd_dvd_ram = 1;
- break;
- case 0x13:
- case 0x14:
- log_debug("profile 0x%02x dvd_rw", profile);
- cd_dvd_rw = 1;
- break;
- case 0x1B:
- log_debug("profile 0x%02x dvd_plus_r", profile);
- cd_dvd_plus_r = 1;
- break;
- case 0x1A:
- log_debug("profile 0x%02x dvd_plus_rw", profile);
- cd_dvd_plus_rw = 1;
- break;
- case 0x2A:
- log_debug("profile 0x%02x dvd_plus_rw_dl", profile);
- cd_dvd_plus_rw_dl = 1;
- break;
- case 0x2B:
- log_debug("profile 0x%02x dvd_plus_r_dl", profile);
- cd_dvd_plus_r_dl = 1;
- break;
- case 0x40:
- cd_bd = 1;
- log_debug("profile 0x%02x bd", profile);
- break;
- case 0x41:
- case 0x42:
- cd_bd_r = 1;
- log_debug("profile 0x%02x bd_r", profile);
- break;
- case 0x43:
- cd_bd_re = 1;
- log_debug("profile 0x%02x bd_re", profile);
- break;
- case 0x50:
- cd_hddvd = 1;
- log_debug("profile 0x%02x hddvd", profile);
- break;
- case 0x51:
- cd_hddvd_r = 1;
- log_debug("profile 0x%02x hddvd_r", profile);
- break;
- case 0x52:
- cd_hddvd_rw = 1;
- log_debug("profile 0x%02x hddvd_rw", profile);
- break;
- default:
- log_debug("profile 0x%02x <ignored>", profile);
- 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 len;
- int 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 */
-
- for (offset = 32768; offset < (32768 + 2048); offset++) {
- if (buffer [offset]) {
- log_debug("data in block 16, assuming complete");
- goto determined;
- }
- }
-
- for (offset = 0; offset < 2048; offset++) {
- if (buffer [offset]) {
- log_debug("data in block 0, assuming complete");
- goto determined;
- }
- }
-
- cd_media_state = media_status[0];
- log_debug("no data in blocks 0 or 16, assuming blank");
- }
-
-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"
- " -l,--lock-media lock the media (to enable eject request events)\n"
- " -u,--unlock-media unlock the media\n"
- " -e,--eject-media eject the media\n"
- " -d,--debug debug to stderr\n"
- " -h,--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=%u\n", cd_media_session_next);
- if (cd_media_session_count > 0)
- printf("ID_CDROM_MEDIA_SESSION_COUNT=%u\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=%u\n", cd_media_track_count);
- if (cd_media_track_count_audio > 0)
- printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%u\n", cd_media_track_count_audio);
- if (cd_media_track_count_data > 0)
- printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%u\n", cd_media_track_count_data);
-exit:
- if (fd >= 0)
- close(fd);
- udev_unref(udev);
- log_close();
- return rc;
-}
~ianmdlvl / elogind.git / blobdiff