src/udev/ata_id/ata_id.c

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * ata_id - reads product/serial number from ATA drives
   4  *
   5  * Copyright © 2009-2010 David Zeuthen <zeuthen@gmail.com>
   6  */
   7
   8 #include <ctype.h>
   9 #include <errno.h>
  10 #include <fcntl.h>
  11 #include <getopt.h>
  12 #include <linux/bsg.h>
  13 #include <linux/hdreg.h>
  14 #include <scsi/scsi.h>
  15 #include <scsi/scsi_ioctl.h>
  16 #include <scsi/sg.h>
  17 #include <stdint.h>
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <sys/ioctl.h>
  22 #include <sys/stat.h>
  23 #include <sys/types.h>
  24 #include <unistd.h>
  25
  26 #include "fd-util.h"
  27 #include "libudev-private.h"
  28 #include "log.h"
  29 #include "udev-util.h"
  30
  31 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
  32
  33 static int disk_scsi_inquiry_command(
  34                 int fd,
  35                 void *buf,
  36                 size_t buf_len) {
  37
  38         uint8_t cdb[6] = {
  39                 /* INQUIRY, see SPC-4 section 6.4 */
  40                 [0] = 0x12,                /* OPERATION CODE: INQUIRY */
  41                 [3] = (buf_len >> 8),      /* ALLOCATION LENGTH */
  42                 [4] = (buf_len & 0xff),
  43         };
  44         uint8_t sense[32] = {};
  45         struct sg_io_v4 io_v4 = {
  46                 .guard = 'Q',
  47                 .protocol = BSG_PROTOCOL_SCSI,
  48                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
  49                 .request_len = sizeof(cdb),
  50                 .request = (uintptr_t) cdb,
  51                 .max_response_len = sizeof(sense),
  52                 .response = (uintptr_t) sense,
  53                 .din_xfer_len = buf_len,
  54                 .din_xferp = (uintptr_t) buf,
  55                 .timeout = COMMAND_TIMEOUT_MSEC,
  56         };
  57         int ret;
  58
  59         ret = ioctl(fd, SG_IO, &io_v4);
  60         if (ret != 0) {
  61                 /* could be that the driver doesn't do version 4, try version 3 */
  62                 if (errno == EINVAL) {
  63                         struct sg_io_hdr io_hdr = {
  64                                 .interface_id = 'S',
  65                                 .cmdp = (unsigned char*) cdb,
  66                                 .cmd_len = sizeof (cdb),
  67                                 .dxferp = buf,
  68                                 .dxfer_len = buf_len,
  69                                 .sbp = sense,
  70                                 .mx_sb_len = sizeof(sense),
  71                                 .dxfer_direction = SG_DXFER_FROM_DEV,
  72                                 .timeout = COMMAND_TIMEOUT_MSEC,
  73                         };
  74
  75                         ret = ioctl(fd, SG_IO, &io_hdr);
  76                         if (ret != 0)
  77                                 return ret;
  78
  79                         /* even if the ioctl succeeds, we need to check the return value */
  80                         if (!(io_hdr.status == 0 &&
  81                               io_hdr.host_status == 0 &&
  82                               io_hdr.driver_status == 0)) {
  83                                 errno = EIO;
  84                                 return -1;
  85                         }
  86                 } else
  87                         return ret;
  88         }
  89
  90         /* even if the ioctl succeeds, we need to check the return value */
  91         if (!(io_v4.device_status == 0 &&
  92               io_v4.transport_status == 0 &&
  93               io_v4.driver_status == 0)) {
  94                 errno = EIO;
  95                 return -1;
  96         }
  97
  98         return 0;
  99 }
 100
 101 static int disk_identify_command(
 102                 int fd,
 103                 void *buf,
 104                 size_t buf_len) {
 105
 106         uint8_t cdb[12] = {
 107                 /*
 108                  * ATA Pass-Through 12 byte command, as described in
 109                  *
 110                  *  T10 04-262r8 ATA Command Pass-Through
 111                  *
 112                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 113                  */
 114                 [0] = 0xa1,     /* OPERATION CODE: 12 byte pass through */
 115                 [1] = 4 << 1,   /* PROTOCOL: PIO Data-in */
 116                 [2] = 0x2e,     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 117                 [3] = 0,        /* FEATURES */
 118                 [4] = 1,        /* SECTORS */
 119                 [5] = 0,        /* LBA LOW */
 120                 [6] = 0,        /* LBA MID */
 121                 [7] = 0,        /* LBA HIGH */
 122                 [8] = 0 & 0x4F, /* SELECT */
 123                 [9] = 0xEC,     /* Command: ATA IDENTIFY DEVICE */
 124         };
 125         uint8_t sense[32] = {};
 126         uint8_t *desc = sense + 8;
 127         struct sg_io_v4 io_v4 = {
 128                 .guard = 'Q',
 129                 .protocol = BSG_PROTOCOL_SCSI,
 130                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 131                 .request_len = sizeof(cdb),
 132                 .request = (uintptr_t) cdb,
 133                 .max_response_len = sizeof(sense),
 134                 .response = (uintptr_t) sense,
 135                 .din_xfer_len = buf_len,
 136                 .din_xferp = (uintptr_t) buf,
 137                 .timeout = COMMAND_TIMEOUT_MSEC,
 138         };
 139         int ret;
 140
 141         ret = ioctl(fd, SG_IO, &io_v4);
 142         if (ret != 0) {
 143                 /* could be that the driver doesn't do version 4, try version 3 */
 144                 if (errno == EINVAL) {
 145                         struct sg_io_hdr io_hdr = {
 146                                 .interface_id = 'S',
 147                                 .cmdp = (unsigned char*) cdb,
 148                                 .cmd_len = sizeof (cdb),
 149                                 .dxferp = buf,
 150                                 .dxfer_len = buf_len,
 151                                 .sbp = sense,
 152                                 .mx_sb_len = sizeof (sense),
 153                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 154                                 .timeout = COMMAND_TIMEOUT_MSEC,
 155                         };
 156
 157                         ret = ioctl(fd, SG_IO, &io_hdr);
 158                         if (ret != 0)
 159                                 return ret;
 160                 } else
 161                         return ret;
 162         }
 163
 164         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 165                 errno = EIO;
 166                 return -1;
 167         }
 168
 169         return 0;
 170 }
 171
 172 static int disk_identify_packet_device_command(
 173                 int fd,
 174                 void *buf,
 175                 size_t buf_len) {
 176
 177         uint8_t cdb[16] = {
 178                 /*
 179                  * ATA Pass-Through 16 byte command, as described in
 180                  *
 181                  *  T10 04-262r8 ATA Command Pass-Through
 182                  *
 183                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 184                  */
 185                 [0] = 0x85,   /* OPERATION CODE: 16 byte pass through */
 186                 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
 187                 [2] = 0x2e,   /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 188                 [3] = 0,      /* FEATURES */
 189                 [4] = 0,      /* FEATURES */
 190                 [5] = 0,      /* SECTORS */
 191                 [6] = 1,      /* SECTORS */
 192                 [7] = 0,      /* LBA LOW */
 193                 [8] = 0,      /* LBA LOW */
 194                 [9] = 0,      /* LBA MID */
 195                 [10] = 0,     /* LBA MID */
 196                 [11] = 0,     /* LBA HIGH */
 197                 [12] = 0,     /* LBA HIGH */
 198                 [13] = 0,     /* DEVICE */
 199                 [14] = 0xA1,  /* Command: ATA IDENTIFY PACKET DEVICE */
 200                 [15] = 0,     /* CONTROL */
 201         };
 202         uint8_t sense[32] = {};
 203         uint8_t *desc = sense + 8;
 204         struct sg_io_v4 io_v4 = {
 205                 .guard = 'Q',
 206                 .protocol = BSG_PROTOCOL_SCSI,
 207                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 208                 .request_len = sizeof (cdb),
 209                 .request = (uintptr_t) cdb,
 210                 .max_response_len = sizeof (sense),
 211                 .response = (uintptr_t) sense,
 212                 .din_xfer_len = buf_len,
 213                 .din_xferp = (uintptr_t) buf,
 214                 .timeout = COMMAND_TIMEOUT_MSEC,
 215         };
 216         int ret;
 217
 218         ret = ioctl(fd, SG_IO, &io_v4);
 219         if (ret != 0) {
 220                 /* could be that the driver doesn't do version 4, try version 3 */
 221                 if (errno == EINVAL) {
 222                         struct sg_io_hdr io_hdr = {
 223                                 .interface_id = 'S',
 224                                 .cmdp = (unsigned char*) cdb,
 225                                 .cmd_len = sizeof (cdb),
 226                                 .dxferp = buf,
 227                                 .dxfer_len = buf_len,
 228                                 .sbp = sense,
 229                                 .mx_sb_len = sizeof (sense),
 230                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 231                                 .timeout = COMMAND_TIMEOUT_MSEC,
 232                         };
 233
 234                         ret = ioctl(fd, SG_IO, &io_hdr);
 235                         if (ret != 0)
 236                                 return ret;
 237                 } else
 238                         return ret;
 239         }
 240
 241         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 242                 errno = EIO;
 243                 return -1;
 244         }
 245
 246         return 0;
 247 }
 248
 249 /**
 250  * disk_identify_get_string:
 251  * @identify: A block of IDENTIFY data
 252  * @offset_words: Offset of the string to get, in words.
 253  * @dest: Destination buffer for the string.
 254  * @dest_len: Length of destination buffer, in bytes.
 255  *
 256  * Copies the ATA string from @identify located at @offset_words into @dest.
 257  */
 258 static void disk_identify_get_string(
 259                 uint8_t identify[512],
 260                 unsigned offset_words,
 261                 char *dest,
 262                 size_t dest_len) {
 263
 264         unsigned c1;
 265         unsigned c2;
 266
 267         while (dest_len > 0) {
 268                 c1 = identify[offset_words * 2 + 1];
 269                 c2 = identify[offset_words * 2];
 270                 *dest = c1;
 271                 dest++;
 272                 *dest = c2;
 273                 dest++;
 274                 offset_words++;
 275                 dest_len -= 2;
 276         }
 277 }
 278
 279 static void disk_identify_fixup_string(
 280                 uint8_t identify[512],
 281                 unsigned offset_words,
 282                 size_t len) {
 283         disk_identify_get_string(identify, offset_words,
 284                                  (char *) identify + offset_words * 2, len);
 285 }
 286
 287 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned offset_words) {
 288         uint16_t *p;
 289
 290         p = (uint16_t *) identify;
 291         p[offset_words] = le16toh (p[offset_words]);
 292 }
 293
 294 /**
 295  * disk_identify:
 296  * @fd: File descriptor for the block device.
 297  * @out_identify: Return location for IDENTIFY data.
 298  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 299  *
 300  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 301  * device represented by @fd. If successful, then the result will be
 302  * copied into @out_identify and @out_is_packet_device.
 303  *
 304  * This routine is based on code from libatasmart, LGPL v2.1.
 305  *
 306  * Returns: 0 if the data was successfully obtained, otherwise
 307  * non-zero with errno set.
 308  */
 309 static int disk_identify(int fd,
 310                          uint8_t out_identify[512],
 311                          int *out_is_packet_device) {
 312         int ret;
 313         uint8_t inquiry_buf[36];
 314         int peripheral_device_type;
 315         int all_nul_bytes;
 316         int n;
 317         int is_packet_device = 0;
 318
 319         /* init results */
 320         memzero(out_identify, 512);
 321
 322         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 323          * we could accidentally blank media. This is because MMC's BLANK
 324          * command has the same op-code (0x61).
 325          *
 326          * To prevent this from happening we bail out if the device
 327          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 328          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 329          * command first... libata is handling this via its SCSI
 330          * emulation layer.
 331          *
 332          * This also ensures that we're actually dealing with a device
 333          * that understands SCSI commands.
 334          *
 335          * (Yes, it is a bit perverse that we're tunneling the ATA
 336          * command through SCSI and relying on the ATA driver
 337          * emulating SCSI well-enough...)
 338          *
 339          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 340          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 341          * for the original bug-report.)
 342          */
 343         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 344         if (ret != 0)
 345                 goto out;
 346
 347         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 348         peripheral_device_type = inquiry_buf[0] & 0x1f;
 349         if (peripheral_device_type == 0x05)
 350           {
 351             is_packet_device = 1;
 352             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 353             goto check_nul_bytes;
 354           }
 355         if (peripheral_device_type != 0x00) {
 356                 ret = -1;
 357                 errno = EIO;
 358                 goto out;
 359         }
 360
 361         /* OK, now issue the IDENTIFY DEVICE command */
 362         ret = disk_identify_command(fd, out_identify, 512);
 363         if (ret != 0)
 364                 goto out;
 365
 366  check_nul_bytes:
 367          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 368         all_nul_bytes = 1;
 369         for (n = 0; n < 512; n++) {
 370                 if (out_identify[n] != '\0') {
 371                         all_nul_bytes = 0;
 372                         break;
 373                 }
 374         }
 375
 376         if (all_nul_bytes) {
 377                 ret = -1;
 378                 errno = EIO;
 379                 goto out;
 380         }
 381
 382 out:
 383         if (out_is_packet_device != NULL)
 384                 *out_is_packet_device = is_packet_device;
 385         return ret;
 386 }
 387
 388 int main(int argc, char *argv[]) {
 389         struct hd_driveid id;
 390         union {
 391                 uint8_t  byte[512];
 392                 uint16_t wyde[256];
 393         } identify;
 394         char model[41];
 395         char model_enc[256];
 396         char serial[21];
 397         char revision[9];
 398         const char *node = NULL;
 399         int export = 0;
 400         _cleanup_close_ int fd = -1;
 401         uint16_t word;
 402         int is_packet_device = 0;
 403         static const struct option options[] = {
 404                 { "export", no_argument, NULL, 'x' },
 405                 { "help", no_argument, NULL, 'h' },
 406                 {}
 407         };
 408
 409         log_set_target(LOG_TARGET_AUTO);
 410         udev_parse_config();
 411         log_parse_environment();
 412         log_open();
 413
 414         for (;;) {
 415                 int option;
 416
 417                 option = getopt_long(argc, argv, "xh", options, NULL);
 418                 if (option == -1)
 419                         break;
 420
 421                 switch (option) {
 422                 case 'x':
 423                         export = 1;
 424                         break;
 425                 case 'h':
 426                         printf("Usage: ata_id [--export] [--help] <device>\n"
 427                                "  -x,--export    print values as environment keys\n"
 428                                "  -h,--help      print this help text\n\n");
 429                         return 0;
 430                 }
 431         }
 432
 433         node = argv[optind];
 434         if (node == NULL) {
 435                 log_error("no node specified");
 436                 return 1;
 437         }
 438
 439         fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
 440         if (fd < 0) {
 441                 log_error("unable to open '%s'", node);
 442                 return 1;
 443         }
 444
 445         if (disk_identify(fd, identify.byte, &is_packet_device) == 0) {
 446                 /*
 447                  * fix up only the fields from the IDENTIFY data that we are going to
 448                  * use and copy it into the hd_driveid struct for convenience
 449                  */
 450                 disk_identify_fixup_string(identify.byte,  10, 20); /* serial */
 451                 disk_identify_fixup_string(identify.byte,  23,  8); /* fwrev */
 452                 disk_identify_fixup_string(identify.byte,  27, 40); /* model */
 453                 disk_identify_fixup_uint16(identify.byte,  0);      /* configuration */
 454                 disk_identify_fixup_uint16(identify.byte,  75);     /* queue depth */
 455                 disk_identify_fixup_uint16(identify.byte,  76);     /* SATA capabilities */
 456                 disk_identify_fixup_uint16(identify.byte,  82);     /* command set supported */
 457                 disk_identify_fixup_uint16(identify.byte,  83);     /* command set supported */
 458                 disk_identify_fixup_uint16(identify.byte,  84);     /* command set supported */
 459                 disk_identify_fixup_uint16(identify.byte,  85);     /* command set supported */
 460                 disk_identify_fixup_uint16(identify.byte,  86);     /* command set supported */
 461                 disk_identify_fixup_uint16(identify.byte,  87);     /* command set supported */
 462                 disk_identify_fixup_uint16(identify.byte,  89);     /* time required for SECURITY ERASE UNIT */
 463                 disk_identify_fixup_uint16(identify.byte,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 464                 disk_identify_fixup_uint16(identify.byte,  91);     /* current APM values */
 465                 disk_identify_fixup_uint16(identify.byte,  94);     /* current AAM value */
 466                 disk_identify_fixup_uint16(identify.byte, 108);     /* WWN */
 467                 disk_identify_fixup_uint16(identify.byte, 109);     /* WWN */
 468                 disk_identify_fixup_uint16(identify.byte, 110);     /* WWN */
 469                 disk_identify_fixup_uint16(identify.byte, 111);     /* WWN */
 470                 disk_identify_fixup_uint16(identify.byte, 128);     /* device lock function */
 471                 disk_identify_fixup_uint16(identify.byte, 217);     /* nominal media rotation rate */
 472                 memcpy(&id, identify.byte, sizeof id);
 473         } else {
 474                 /* If this fails, then try HDIO_GET_IDENTITY */
 475                 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
 476                         log_debug_errno(errno, "HDIO_GET_IDENTITY failed for '%s': %m", node);
 477                         return 2;
 478                 }
 479         }
 480
 481         memcpy(model, id.model, 40);
 482         model[40] = '\0';
 483         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 484         util_replace_whitespace((char *) id.model, model, 40);
 485         util_replace_chars(model, NULL);
 486         util_replace_whitespace((char *) id.serial_no, serial, 20);
 487         util_replace_chars(serial, NULL);
 488         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 489         util_replace_chars(revision, NULL);
 490
 491         if (export) {
 492                 /* Set this to convey the disk speaks the ATA protocol */
 493                 printf("ID_ATA=1\n");
 494
 495                 if ((id.config >> 8) & 0x80) {
 496                         /* This is an ATAPI device */
 497                         switch ((id.config >> 8) & 0x1f) {
 498                         case 0:
 499                                 printf("ID_TYPE=cd\n");
 500                                 break;
 501                         case 1:
 502                                 printf("ID_TYPE=tape\n");
 503                                 break;
 504                         case 5:
 505                                 printf("ID_TYPE=cd\n");
 506                                 break;
 507                         case 7:
 508                                 printf("ID_TYPE=optical\n");
 509                                 break;
 510                         default:
 511                                 printf("ID_TYPE=generic\n");
 512                                 break;
 513                         }
 514                 } else {
 515                         printf("ID_TYPE=disk\n");
 516                 }
 517                 printf("ID_BUS=ata\n");
 518                 printf("ID_MODEL=%s\n", model);
 519                 printf("ID_MODEL_ENC=%s\n", model_enc);
 520                 printf("ID_REVISION=%s\n", revision);
 521                 if (serial[0] != '\0') {
 522                         printf("ID_SERIAL=%s_%s\n", model, serial);
 523                         printf("ID_SERIAL_SHORT=%s\n", serial);
 524                 } else {
 525                         printf("ID_SERIAL=%s\n", model);
 526                 }
 527
 528                 if (id.command_set_1 & (1<<5)) {
 529                         printf("ID_ATA_WRITE_CACHE=1\n");
 530                         printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 531                 }
 532                 if (id.command_set_1 & (1<<10)) {
 533                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 534                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 535
 536                         /*
 537                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 538                          * so it is easy to check whether the protected area is in use.
 539                          */
 540                 }
 541                 if (id.command_set_1 & (1<<3)) {
 542                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 543                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 544                 }
 545                 if (id.command_set_1 & (1<<1)) {
 546                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 547                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 548                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 549                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 550                                 if (id.dlf & (1<<8))
 551                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 552                                 else
 553                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 554                         }
 555                         if (id.dlf & (1<<5))
 556                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 557                         if (id.dlf & (1<<4))
 558                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 559                         if (id.dlf & (1<<3))
 560                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 561                         if (id.dlf & (1<<2))
 562                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 563                 }
 564                 if (id.command_set_1 & (1<<0)) {
 565                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 566                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 567                 }
 568                 if (id.command_set_2 & (1<<9)) {
 569                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 570                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 571                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 572                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 573                 }
 574                 if (id.command_set_2 & (1<<5)) {
 575                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 576                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 577                 }
 578                 if (id.command_set_2 & (1<<3)) {
 579                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 580                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 581                         if ((id.cfs_enable_2 & (1<<3)))
 582                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 583                 }
 584                 if (id.command_set_2 & (1<<0))
 585                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 586
 587                 /*
 588                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 589                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 590                  * the device does not claim compliance with the Serial ATA specification and words
 591                  * 76 through 79 are not valid and shall be ignored.
 592                  */
 593
 594                 word = identify.wyde[76];
 595                 if (!IN_SET(word, 0x0000, 0xffff)) {
 596                         printf("ID_ATA_SATA=1\n");
 597                         /*
 598                          * If bit 2 of word 76 is set to one, then the device supports the Gen2
 599                          * signaling rate of 3.0 Gb/s (see SATA 2.6).
 600                          *
 601                          * If bit 1 of word 76 is set to one, then the device supports the Gen1
 602                          * signaling rate of 1.5 Gb/s (see SATA 2.6).
 603                          */
 604                         if (word & (1<<2))
 605                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
 606                         if (word & (1<<1))
 607                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
 608                 }
 609
 610                 /* Word 217 indicates the nominal media rotation rate of the device */
 611                 word = identify.wyde[217];
 612                 if (word == 0x0001)
 613                         printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
 614                 else if (word >= 0x0401 && word <= 0xfffe)
 615                         printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
 616
 617                 /*
 618                  * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
 619                  * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
 620                  * All other values are reserved.
 621                  */
 622                 word = identify.wyde[108];
 623                 if ((word & 0xf000) == 0x5000) {
 624                         uint64_t wwwn;
 625
 626                         wwwn   = identify.wyde[108];
 627                         wwwn <<= 16;
 628                         wwwn  |= identify.wyde[109];
 629                         wwwn <<= 16;
 630                         wwwn  |= identify.wyde[110];
 631                         wwwn <<= 16;
 632                         wwwn  |= identify.wyde[111];
 633                         printf("ID_WWN=0x%1$" PRIx64 "\n"
 634                                "ID_WWN_WITH_EXTENSION=0x%1$" PRIx64 "\n",
 635                                wwwn);
 636                 }
 637
 638                 /* from Linux's include/linux/ata.h */
 639                 if (IN_SET(identify.wyde[0], 0x848a, 0x844a) ||
 640                     (identify.wyde[83] & 0xc004) == 0x4004)
 641                         printf("ID_ATA_CFA=1\n");
 642         } else {
 643                 if (serial[0] != '\0')
 644                         printf("%s_%s\n", model, serial);
 645                 else
 646                         printf("%s\n", model);
 647         }
 648
 649         return 0;
 650 }