X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fudev%2Fcdrom_id%2Fcdrom_id.c;fp=src%2Fudev%2Fcdrom_id%2Fcdrom_id.c;h=0000000000000000000000000000000000000000;hp=54a50756a8d15d0444aca106e24fba9d432c0f09;hb=030329f5dcf08fd0a94c8ad6a54836d38ffe2f43;hpb=62a30b2c490512fe22a4e5faacb1d55763ead1e0 diff --git a/src/udev/cdrom_id/cdrom_id.c b/src/udev/cdrom_id/cdrom_id.c deleted file mode 100644 index 54a50756a..000000000 --- a/src/udev/cdrom_id/cdrom_id.c +++ /dev/null @@ -1,1084 +0,0 @@ -/* - * cdrom_id - optical drive and media information prober - * - * Copyright (C) 2008-2010 Kay Sievers - * - * 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 . - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#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 ", 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 ", 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 , 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] \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; -}