/* * 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 . */ #ifndef _GNU_SOURCE #define _GNU_SOURCE 1 #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "libudev.h" #include "libudev-private.h" _printf_(6,0) static void log_fn(struct udev *udev, int priority, const char *file, int line, const char *fn, const char *format, va_list args) { log_metav(priority, file, line, fn, format, args); } /* 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, features[i+3]); 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 result, len; int block, offset; if (cd_media_dvd_ram) { /* a write protected dvd-ram may report "complete" status */ unsigned char dvdstruct[8]; unsigned char format[12]; scsi_cmd_init(udev, &sc); scsi_cmd_set(udev, &sc, 0, 0xAD); scsi_cmd_set(udev, &sc, 7, 0xC0); scsi_cmd_set(udev, &sc, 9, sizeof(dvdstruct)); scsi_cmd_set(udev, &sc, 11, 0); err = scsi_cmd_run(udev, &sc, fd, dvdstruct, sizeof(dvdstruct)); if ((err != 0)) { info_scsi_cmd_err(udev, "READ DVD STRUCTURE", err); return -1; } if (dvdstruct[4] & 0x02) { cd_media_state = media_status[2]; log_debug("write-protected DVD-RAM media inserted"); goto determined; } /* let's make sure we don't try to read unformatted media */ scsi_cmd_init(udev, &sc); scsi_cmd_set(udev, &sc, 0, 0x23); scsi_cmd_set(udev, &sc, 8, sizeof(format)); scsi_cmd_set(udev, &sc, 9, 0); err = scsi_cmd_run(udev, &sc, fd, format, sizeof(format)); if ((err != 0)) { info_scsi_cmd_err(udev, "READ DVD FORMAT CAPACITIES", err); return -1; } len = format[3]; if (len & 7 || len < 16) { log_debug("invalid format capacities length"); return -1; } switch(format[8] & 3) { case 1: log_debug("unformatted DVD-RAM media inserted"); /* This means that last format was interrupted * or failed, blank dvd-ram discs are factory * formatted. Take no action here as it takes * quite a while to reformat a dvd-ram and it's * not automatically started */ goto determined; case 2: log_debug("formatted DVD-RAM media inserted"); break; case 3: cd_media = 0; //return no media log_debug("format capacities returned no media"); return -1; } } /* Take a closer look at formatted media (unformatted DVD+RW * has "blank" status", DVD-RAM was examined earlier) and check * for ISO and UDF PVDs or a fs superblock presence and do it * in one ioctl (we need just sectors 0 and 16) */ scsi_cmd_init(udev, &sc); scsi_cmd_set(udev, &sc, 0, 0x28); scsi_cmd_set(udev, &sc, 5, 0); scsi_cmd_set(udev, &sc, 8, 32); scsi_cmd_set(udev, &sc, 9, 0); err = scsi_cmd_run(udev, &sc, fd, buffer, sizeof(buffer)); if ((err != 0)) { cd_media = 0; info_scsi_cmd_err(udev, "READ FIRST 32 BLOCKS", err); return -1; } /* if any non-zero data is found in sector 16 (iso and udf) or * eventually 0 (fat32 boot sector, ext2 superblock, etc), disc * is assumed non-blank */ result = 0; for (block = 32768; block >= 0 && !result; block -= 32768) { offset = block; while (offset < (block + 2048) && !result) { result = buffer [offset]; offset++; } } if (!result) { cd_media_state = media_status[0]; log_debug("no data in blocks 0 or 16, assuming blank"); } else { log_debug("data in blocks 0 or 16, assuming complete"); } } determined: /* "other" is e. g. DVD-RAM, can't append sessions there; DVDs in * restricted overwrite mode can never append, only in sequential mode */ if ((header[2] & 3) < 2 && !cd_media_dvd_rw_ro) cd_media_session_next = header[10] << 8 | header[5]; cd_media_session_count = header[9] << 8 | header[4]; cd_media_track_count = header[11] << 8 | header[6]; return 0; } static int cd_media_toc(struct udev *udev, int fd) { struct scsi_cmd sc; unsigned char header[12]; unsigned char toc[65536]; unsigned int len, i, num_tracks; unsigned char *p; int err; scsi_cmd_init(udev, &sc); scsi_cmd_set(udev, &sc, 0, 0x43); scsi_cmd_set(udev, &sc, 6, 1); scsi_cmd_set(udev, &sc, 8, sizeof(header) & 0xff); scsi_cmd_set(udev, &sc, 9, 0); err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header)); if ((err != 0)) { info_scsi_cmd_err(udev, "READ TOC", err); return -1; } len = (header[0] << 8 | header[1]) + 2; log_debug("READ TOC: len: %d, start track: %d, end track: %d", len, header[2], header[3]); if (len > sizeof(toc)) return -1; if (len < 2) return -1; /* 2: first track, 3: last track */ num_tracks = header[3] - header[2] + 1; /* empty media has no tracks */ if (len < 8) return 0; scsi_cmd_init(udev, &sc); scsi_cmd_set(udev, &sc, 0, 0x43); scsi_cmd_set(udev, &sc, 6, header[2]); /* First Track/Session Number */ scsi_cmd_set(udev, &sc, 7, (len >> 8) & 0xff); scsi_cmd_set(udev, &sc, 8, len & 0xff); scsi_cmd_set(udev, &sc, 9, 0); err = scsi_cmd_run(udev, &sc, fd, toc, len); if ((err != 0)) { info_scsi_cmd_err(udev, "READ TOC (tracks)", err); return -1; } /* Take care to not iterate beyond the last valid track as specified in * the TOC, but also avoid going beyond the TOC length, just in case * the last track number is invalidly large */ for (p = toc+4, i = 4; i < len-8 && num_tracks > 0; i += 8, p += 8, --num_tracks) { unsigned int block; unsigned int is_data_track; is_data_track = (p[1] & 0x04) != 0; block = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7]; log_debug("track=%u info=0x%x(%s) start_block=%u", p[2], p[1] & 0x0f, is_data_track ? "data":"audio", block); if (is_data_track) cd_media_track_count_data++; else cd_media_track_count_audio++; } scsi_cmd_init(udev, &sc); scsi_cmd_set(udev, &sc, 0, 0x43); scsi_cmd_set(udev, &sc, 2, 1); /* Session Info */ scsi_cmd_set(udev, &sc, 8, sizeof(header)); scsi_cmd_set(udev, &sc, 9, 0); err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header)); if ((err != 0)) { info_scsi_cmd_err(udev, "READ TOC (multi session)", err); return -1; } len = header[4+4] << 24 | header[4+5] << 16 | header[4+6] << 8 | header[4+7]; log_debug("last track %u starts at block %u", header[4+2], len); cd_media_session_last_offset = (unsigned long long int)len * 2048; return 0; } int main(int argc, char *argv[]) { struct udev *udev; static const struct option options[] = { { "lock-media", no_argument, NULL, 'l' }, { "unlock-media", no_argument, NULL, 'u' }, { "eject-media", no_argument, NULL, 'e' }, { "debug", no_argument, NULL, 'd' }, { "help", no_argument, NULL, 'h' }, {} }; bool eject = false; bool lock = false; bool unlock = false; const char *node = NULL; int fd = -1; int cnt; int rc = 0; log_open(); udev = udev_new(); if (udev == NULL) goto exit; udev_set_log_fn(udev, log_fn); 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); udev_set_log_priority(udev, LOG_DEBUG); log_open(); break; case 'h': printf("Usage: cdrom_id [options] \n" " --lock-media lock the media (to enable eject request events)\n" " --unlock-media unlock the media\n" " --eject-media eject the media\n" " --debug debug to stderr\n" " --help print this help text\n\n"); goto exit; default: rc = 1; goto exit; } } node = argv[optind]; if (!node) { log_error("no device"); fprintf(stderr, "no device\n"); rc = 1; goto exit; } srand((unsigned int)getpid()); for (cnt = 20; cnt > 0; cnt--) { struct timespec duration; fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC|(is_mounted(node) ? 0 : O_EXCL)); if (fd >= 0 || errno != EBUSY) break; duration.tv_sec = 0; duration.tv_nsec = (100 * 1000 * 1000) + (rand() % 100 * 1000 * 1000); nanosleep(&duration, NULL); } if (fd < 0) { log_debug("unable to open '%s'", node); fprintf(stderr, "unable to open '%s'\n", node); rc = 1; goto exit; } log_debug("probing: '%s'", node); /* same data as original cdrom_id */ if (cd_capability_compat(udev, fd) < 0) { rc = 1; goto exit; } /* check for media - don't bail if there's no media as we still need to * to read profiles */ cd_media_compat(udev, fd); /* check if drive talks MMC */ if (cd_inquiry(udev, fd) < 0) goto work; /* read drive and possibly current profile */ if (cd_profiles(udev, fd) != 0) goto work; /* at this point we are guaranteed to have media in the drive - find out more about it */ /* get session/track info */ cd_media_toc(udev, fd); /* get writable media state */ cd_media_info(udev, fd); work: /* lock the media, so we enable eject button events */ if (lock && cd_media) { log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (lock)"); media_lock(udev, fd, true); } if (unlock && cd_media) { log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)"); media_lock(udev, fd, false); } if (eject) { log_debug("PREVENT_ALLOW_MEDIUM_REMOVAL (unlock)"); media_lock(udev, fd, false); log_debug("START_STOP_UNIT (eject)"); media_eject(udev, fd); } printf("ID_CDROM=1\n"); if (cd_cd_rom) printf("ID_CDROM_CD=1\n"); if (cd_cd_r) printf("ID_CDROM_CD_R=1\n"); if (cd_cd_rw) printf("ID_CDROM_CD_RW=1\n"); if (cd_dvd_rom) printf("ID_CDROM_DVD=1\n"); if (cd_dvd_r) printf("ID_CDROM_DVD_R=1\n"); if (cd_dvd_rw) printf("ID_CDROM_DVD_RW=1\n"); if (cd_dvd_ram) printf("ID_CDROM_DVD_RAM=1\n"); if (cd_dvd_plus_r) printf("ID_CDROM_DVD_PLUS_R=1\n"); if (cd_dvd_plus_rw) printf("ID_CDROM_DVD_PLUS_RW=1\n"); if (cd_dvd_plus_r_dl) printf("ID_CDROM_DVD_PLUS_R_DL=1\n"); if (cd_dvd_plus_rw_dl) printf("ID_CDROM_DVD_PLUS_RW_DL=1\n"); if (cd_bd) printf("ID_CDROM_BD=1\n"); if (cd_bd_r) printf("ID_CDROM_BD_R=1\n"); if (cd_bd_re) printf("ID_CDROM_BD_RE=1\n"); if (cd_hddvd) printf("ID_CDROM_HDDVD=1\n"); if (cd_hddvd_r) printf("ID_CDROM_HDDVD_R=1\n"); if (cd_hddvd_rw) printf("ID_CDROM_HDDVD_RW=1\n"); if (cd_mo) printf("ID_CDROM_MO=1\n"); if (cd_mrw) printf("ID_CDROM_MRW=1\n"); if (cd_mrw_w) printf("ID_CDROM_MRW_W=1\n"); if (cd_media) printf("ID_CDROM_MEDIA=1\n"); if (cd_media_mo) printf("ID_CDROM_MEDIA_MO=1\n"); if (cd_media_mrw) printf("ID_CDROM_MEDIA_MRW=1\n"); if (cd_media_mrw_w) printf("ID_CDROM_MEDIA_MRW_W=1\n"); if (cd_media_cd_rom) printf("ID_CDROM_MEDIA_CD=1\n"); if (cd_media_cd_r) printf("ID_CDROM_MEDIA_CD_R=1\n"); if (cd_media_cd_rw) printf("ID_CDROM_MEDIA_CD_RW=1\n"); if (cd_media_dvd_rom) printf("ID_CDROM_MEDIA_DVD=1\n"); if (cd_media_dvd_r) printf("ID_CDROM_MEDIA_DVD_R=1\n"); if (cd_media_dvd_ram) printf("ID_CDROM_MEDIA_DVD_RAM=1\n"); if (cd_media_dvd_rw) printf("ID_CDROM_MEDIA_DVD_RW=1\n"); if (cd_media_dvd_plus_r) printf("ID_CDROM_MEDIA_DVD_PLUS_R=1\n"); if (cd_media_dvd_plus_rw) printf("ID_CDROM_MEDIA_DVD_PLUS_RW=1\n"); if (cd_media_dvd_plus_rw_dl) printf("ID_CDROM_MEDIA_DVD_PLUS_RW_DL=1\n"); if (cd_media_dvd_plus_r_dl) printf("ID_CDROM_MEDIA_DVD_PLUS_R_DL=1\n"); if (cd_media_bd) printf("ID_CDROM_MEDIA_BD=1\n"); if (cd_media_bd_r) printf("ID_CDROM_MEDIA_BD_R=1\n"); if (cd_media_bd_re) printf("ID_CDROM_MEDIA_BD_RE=1\n"); if (cd_media_hddvd) printf("ID_CDROM_MEDIA_HDDVD=1\n"); if (cd_media_hddvd_r) printf("ID_CDROM_MEDIA_HDDVD_R=1\n"); if (cd_media_hddvd_rw) printf("ID_CDROM_MEDIA_HDDVD_RW=1\n"); if (cd_media_state != NULL) printf("ID_CDROM_MEDIA_STATE=%s\n", cd_media_state); if (cd_media_session_next > 0) printf("ID_CDROM_MEDIA_SESSION_NEXT=%d\n", cd_media_session_next); if (cd_media_session_count > 0) printf("ID_CDROM_MEDIA_SESSION_COUNT=%d\n", cd_media_session_count); if (cd_media_session_count > 1 && cd_media_session_last_offset > 0) printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset); if (cd_media_track_count > 0) printf("ID_CDROM_MEDIA_TRACK_COUNT=%d\n", cd_media_track_count); if (cd_media_track_count_audio > 0) printf("ID_CDROM_MEDIA_TRACK_COUNT_AUDIO=%d\n", cd_media_track_count_audio); if (cd_media_track_count_data > 0) printf("ID_CDROM_MEDIA_TRACK_COUNT_DATA=%d\n", cd_media_track_count_data); exit: if (fd >= 0) close(fd); udev_unref(udev); log_close(); return rc; }