X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=extras%2Fcdrom_id%2Fcdrom_id.c;h=fd7d482f89a5ab131daed8f053becc64216249e8;hp=afb481d1a88fd953af6b4a417ac9631ecb4659be;hb=45b1d780b960f3bcad84ae8a2702cdcf43b3e5cb;hpb=c1b7f60deac0bc0e87a139648d57085512fd9e62 diff --git a/extras/cdrom_id/cdrom_id.c b/extras/cdrom_id/cdrom_id.c index afb481d1a..fd7d482f8 100644 --- a/extras/cdrom_id/cdrom_id.c +++ b/extras/cdrom_id/cdrom_id.c @@ -154,19 +154,22 @@ struct scsi_cmd { struct sg_io_hdr sg_io; }; -static void scsi_cmd_set(struct udev *udev, struct scsi_cmd *cmd, size_t i, int arg) +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) { - if (i == 0) { - memset(cmd, 0, sizeof(struct scsi_cmd)); - cmd->cgc.quiet = 1; - cmd->cgc.sense = &cmd->_sense.s; - memset(&cmd->sg_io, 0, sizeof(cmd->sg_io)); - cmd->sg_io.interface_id = 'S'; - cmd->sg_io.mx_sb_len = sizeof(cmd->_sense); - cmd->sg_io.cmdp = cmd->cgc.cmd; - cmd->sg_io.sbp = cmd->_sense.u; - cmd->sg_io.flags = SG_FLAG_LUN_INHIBIT | SG_FLAG_DIRECT_IO; - } cmd->sg_io.cmd_len = i + 1; cmd->cgc.cmd[i] = arg; } @@ -237,12 +240,12 @@ static int cd_inquiry(struct udev *udev, int fd) { unsigned char inq[128]; int err; - memset(inq, 0, sizeof(inq)); + 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)) { + if ((err != 0)) { info_scsi_cmd_err(udev, "INQUIRY", err); return -1; } @@ -256,176 +259,286 @@ static int cd_inquiry(struct udev *udev, int fd) { return 0; } -static int cd_profiles(struct udev *udev, int fd) +static int feature_profiles(struct udev *udev, const unsigned char *profiles, size_t size) { - struct scsi_cmd sc; - unsigned char header[8]; - unsigned char profiles[512]; - unsigned int cur_profile; - unsigned int len; unsigned int i; - int err; - memset(header, 0, sizeof(header)); - scsi_cmd_set(udev, &sc, 0, 0x46); - scsi_cmd_set(udev, &sc, 1, 0); - 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, "GET CONFIGURATION", err); - return -1; - } - - len = 4 + (header[0] << 24 | header[1] << 16 | header[2] << 8 | header[3]); - info(udev, "GET CONFIGURATION: number of profiles %i\n", len); - if (len > sizeof(profiles)) { - info(udev, "invalid number of profiles\n"); - return -1; - } - - memset(profiles, 0, sizeof(profiles)); - scsi_cmd_set(udev, &sc, 0, 0x46); - scsi_cmd_set(udev, &sc, 1, 1); - scsi_cmd_set(udev, &sc, 6, len >> 16); - scsi_cmd_set(udev, &sc, 7, len >> 8); - scsi_cmd_set(udev, &sc, 8, len); - scsi_cmd_set(udev, &sc, 9, 0); - err = scsi_cmd_run(udev, &sc, fd, profiles, len); - if ((err < 0)) { - info_scsi_cmd_err(udev, "GET CONFIGURATION", err); - return -1; - } - - /* device profiles */ - for (i = 12; i < profiles[11]; i += 4) { - unsigned int profile = (profiles[i] << 8 | profiles[i + 1]); - if (profile == 0) - continue; - info(udev, "profile 0x%02x\n", profile); + 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; + 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: case 0x14: + info(udev, "profile 0x%02x dvd_rw\n", profile); cd_dvd_rw = 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 \n", profile); break; } } + return 0; +} - /* current media profile */ - cur_profile = header[6] << 8 | header[7]; - info(udev, "current profile 0x%02x\n", cur_profile); - if (cur_profile == 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 , 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 \n", cur_profile); break; } return 0; @@ -443,23 +556,130 @@ static int cd_media_info(struct udev *udev, int fd) }; int err; - memset(header, 0, sizeof(header)); + 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, 8, sizeof(header) & 0xff); scsi_cmd_set(udev, &sc, 9, 0); err = scsi_cmd_run(udev, &sc, fd, header, sizeof(header)); - if ((err < 0)) { + 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 && (header[2] & 3) < 4) + if (!cd_media_cd_rom) cd_media_state = media_status[header[2] & 3]; - if ((header[2] & 3) != 2) + /* 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 || 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]; @@ -476,13 +696,13 @@ static int cd_media_toc(struct udev *udev, int fd) unsigned char *p; int err; - memset(header, 0, sizeof(header)); + 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)); + 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)) { + if ((err != 0)) { info_scsi_cmd_err(udev, "READ TOC", err); return -1; } @@ -498,14 +718,14 @@ static int cd_media_toc(struct udev *udev, int fd) if (len < 8) return 0; - memset(toc, 0, sizeof(toc)); + 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); - scsi_cmd_set(udev, &sc, 8, len); + 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)) { + if ((err != 0)) { info_scsi_cmd_err(udev, "READ TOC (tracks)", err); return -1; } @@ -526,13 +746,13 @@ static int cd_media_toc(struct udev *udev, int fd) cd_media_track_count_audio++; } - memset(header, 0, sizeof (header)); + 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, 12); + 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)) { + if ((err != 0)) { info_scsi_cmd_err(udev, "READ TOC (multi session)", err); return -1; } @@ -637,14 +857,14 @@ int main(int argc, char *argv[]) if (cd_profiles(udev, fd) < 0) goto print; - /* get session/track info */ - if (cd_media_toc(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) @@ -737,14 +957,14 @@ print: 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); - if (cd_media_session_last_offset > 0) - printf("ID_CDROM_MEDIA_SESSION_LAST_OFFSET=%llu\n", cd_media_session_last_offset); exit: if (fd >= 0) close(fd);