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-util.h"
  28 #include "log.h"
  29 #include "udev-util.h"
  30 #include "util.h"
  31
  32 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
  33
  34 static int disk_scsi_inquiry_command(
  35                 int fd,
  36                 void *buf,
  37                 size_t buf_len) {
  38
  39         uint8_t cdb[6] = {
  40                 /* INQUIRY, see SPC-4 section 6.4 */
  41                 [0] = 0x12,                /* OPERATION CODE: INQUIRY */
  42                 [3] = (buf_len >> 8),      /* ALLOCATION LENGTH */
  43                 [4] = (buf_len & 0xff),
  44         };
  45         uint8_t sense[32] = {};
  46         struct sg_io_v4 io_v4 = {
  47                 .guard = 'Q',
  48                 .protocol = BSG_PROTOCOL_SCSI,
  49                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
  50                 .request_len = sizeof(cdb),
  51                 .request = (uintptr_t) cdb,
  52                 .max_response_len = sizeof(sense),
  53                 .response = (uintptr_t) sense,
  54                 .din_xfer_len = buf_len,
  55                 .din_xferp = (uintptr_t) buf,
  56                 .timeout = COMMAND_TIMEOUT_MSEC,
  57         };
  58         int ret;
  59
  60         ret = ioctl(fd, SG_IO, &io_v4);
  61         if (ret != 0) {
  62                 /* could be that the driver doesn't do version 4, try version 3 */
  63                 if (errno == EINVAL) {
  64                         struct sg_io_hdr io_hdr = {
  65                                 .interface_id = 'S',
  66                                 .cmdp = (unsigned char*) cdb,
  67                                 .cmd_len = sizeof (cdb),
  68                                 .dxferp = buf,
  69                                 .dxfer_len = buf_len,
  70                                 .sbp = sense,
  71                                 .mx_sb_len = sizeof(sense),
  72                                 .dxfer_direction = SG_DXFER_FROM_DEV,
  73                                 .timeout = COMMAND_TIMEOUT_MSEC,
  74                         };
  75
  76                         ret = ioctl(fd, SG_IO, &io_hdr);
  77                         if (ret != 0)
  78                                 return ret;
  79
  80                         /* even if the ioctl succeeds, we need to check the return value */
  81                         if (!(io_hdr.status == 0 &&
  82                               io_hdr.host_status == 0 &&
  83                               io_hdr.driver_status == 0)) {
  84                                 errno = EIO;
  85                                 return -1;
  86                         }
  87                 } else
  88                         return ret;
  89         }
  90
  91         /* even if the ioctl succeeds, we need to check the return value */
  92         if (!(io_v4.device_status == 0 &&
  93               io_v4.transport_status == 0 &&
  94               io_v4.driver_status == 0)) {
  95                 errno = EIO;
  96                 return -1;
  97         }
  98
  99         return 0;
 100 }
 101
 102 static int disk_identify_command(
 103                 int fd,
 104                 void *buf,
 105                 size_t buf_len) {
 106
 107         uint8_t cdb[12] = {
 108                 /*
 109                  * ATA Pass-Through 12 byte command, as described in
 110                  *
 111                  *  T10 04-262r8 ATA Command Pass-Through
 112                  *
 113                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 114                  */
 115                 [0] = 0xa1,     /* OPERATION CODE: 12 byte pass through */
 116                 [1] = 4 << 1,   /* PROTOCOL: PIO Data-in */
 117                 [2] = 0x2e,     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 118                 [3] = 0,        /* FEATURES */
 119                 [4] = 1,        /* SECTORS */
 120                 [5] = 0,        /* LBA LOW */
 121                 [6] = 0,        /* LBA MID */
 122                 [7] = 0,        /* LBA HIGH */
 123                 [8] = 0 & 0x4F, /* SELECT */
 124                 [9] = 0xEC,     /* Command: ATA IDENTIFY DEVICE */
 125         };
 126         uint8_t sense[32] = {};
 127         uint8_t *desc = sense + 8;
 128         struct sg_io_v4 io_v4 = {
 129                 .guard = 'Q',
 130                 .protocol = BSG_PROTOCOL_SCSI,
 131                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 132                 .request_len = sizeof(cdb),
 133                 .request = (uintptr_t) cdb,
 134                 .max_response_len = sizeof(sense),
 135                 .response = (uintptr_t) sense,
 136                 .din_xfer_len = buf_len,
 137                 .din_xferp = (uintptr_t) buf,
 138                 .timeout = COMMAND_TIMEOUT_MSEC,
 139         };
 140         int ret;
 141
 142         ret = ioctl(fd, SG_IO, &io_v4);
 143         if (ret != 0) {
 144                 /* could be that the driver doesn't do version 4, try version 3 */
 145                 if (errno == EINVAL) {
 146                         struct sg_io_hdr io_hdr = {
 147                                 .interface_id = 'S',
 148                                 .cmdp = (unsigned char*) cdb,
 149                                 .cmd_len = sizeof (cdb),
 150                                 .dxferp = buf,
 151                                 .dxfer_len = buf_len,
 152                                 .sbp = sense,
 153                                 .mx_sb_len = sizeof (sense),
 154                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 155                                 .timeout = COMMAND_TIMEOUT_MSEC,
 156                         };
 157
 158                         ret = ioctl(fd, SG_IO, &io_hdr);
 159                         if (ret != 0)
 160                                 return ret;
 161                 } else
 162                         return ret;
 163         }
 164
 165         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 166                 errno = EIO;
 167                 return -1;
 168         }
 169
 170         return 0;
 171 }
 172
 173 static int disk_identify_packet_device_command(
 174                 int fd,
 175                 void *buf,
 176                 size_t buf_len) {
 177
 178         uint8_t cdb[16] = {
 179                 /*
 180                  * ATA Pass-Through 16 byte command, as described in
 181                  *
 182                  *  T10 04-262r8 ATA Command Pass-Through
 183                  *
 184                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 185                  */
 186                 [0] = 0x85,   /* OPERATION CODE: 16 byte pass through */
 187                 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
 188                 [2] = 0x2e,   /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 189                 [3] = 0,      /* FEATURES */
 190                 [4] = 0,      /* FEATURES */
 191                 [5] = 0,      /* SECTORS */
 192                 [6] = 1,      /* SECTORS */
 193                 [7] = 0,      /* LBA LOW */
 194                 [8] = 0,      /* LBA LOW */
 195                 [9] = 0,      /* LBA MID */
 196                 [10] = 0,     /* LBA MID */
 197                 [11] = 0,     /* LBA HIGH */
 198                 [12] = 0,     /* LBA HIGH */
 199                 [13] = 0,     /* DEVICE */
 200                 [14] = 0xA1,  /* Command: ATA IDENTIFY PACKET DEVICE */
 201                 [15] = 0,     /* CONTROL */
 202         };
 203         uint8_t sense[32] = {};
 204         uint8_t *desc = sense + 8;
 205         struct sg_io_v4 io_v4 = {
 206                 .guard = 'Q',
 207                 .protocol = BSG_PROTOCOL_SCSI,
 208                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 209                 .request_len = sizeof (cdb),
 210                 .request = (uintptr_t) cdb,
 211                 .max_response_len = sizeof (sense),
 212                 .response = (uintptr_t) sense,
 213                 .din_xfer_len = buf_len,
 214                 .din_xferp = (uintptr_t) buf,
 215                 .timeout = COMMAND_TIMEOUT_MSEC,
 216         };
 217         int ret;
 218
 219         ret = ioctl(fd, SG_IO, &io_v4);
 220         if (ret != 0) {
 221                 /* could be that the driver doesn't do version 4, try version 3 */
 222                 if (errno == EINVAL) {
 223                         struct sg_io_hdr io_hdr = {
 224                                 .interface_id = 'S',
 225                                 .cmdp = (unsigned char*) cdb,
 226                                 .cmd_len = sizeof (cdb),
 227                                 .dxferp = buf,
 228                                 .dxfer_len = buf_len,
 229                                 .sbp = sense,
 230                                 .mx_sb_len = sizeof (sense),
 231                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 232                                 .timeout = COMMAND_TIMEOUT_MSEC,
 233                         };
 234
 235                         ret = ioctl(fd, SG_IO, &io_hdr);
 236                         if (ret != 0)
 237                                 return ret;
 238                 } else
 239                         return ret;
 240         }
 241
 242         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 243                 errno = EIO;
 244                 return -1;
 245         }
 246
 247         return 0;
 248 }
 249
 250 /**
 251  * disk_identify_get_string:
 252  * @identify: A block of IDENTIFY data
 253  * @offset_words: Offset of the string to get, in words.
 254  * @dest: Destination buffer for the string.
 255  * @dest_len: Length of destination buffer, in bytes.
 256  *
 257  * Copies the ATA string from @identify located at @offset_words into @dest.
 258  */
 259 static void disk_identify_get_string(
 260                 uint8_t identify[512],
 261                 unsigned offset_words,
 262                 char *dest,
 263                 size_t dest_len) {
 264
 265         unsigned c1;
 266         unsigned c2;
 267
 268         while (dest_len > 0) {
 269                 c1 = identify[offset_words * 2 + 1];
 270                 c2 = identify[offset_words * 2];
 271                 *dest = c1;
 272                 dest++;
 273                 *dest = c2;
 274                 dest++;
 275                 offset_words++;
 276                 dest_len -= 2;
 277         }
 278 }
 279
 280 static void disk_identify_fixup_string(
 281                 uint8_t identify[512],
 282                 unsigned offset_words,
 283                 size_t len) {
 284         disk_identify_get_string(identify, offset_words,
 285                                  (char *) identify + offset_words * 2, len);
 286 }
 287
 288 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned offset_words) {
 289         uint16_t *p;
 290
 291         p = (uint16_t *) identify;
 292         p[offset_words] = le16toh (p[offset_words]);
 293 }
 294
 295 /**
 296  * disk_identify:
 297  * @fd: File descriptor for the block device.
 298  * @out_identify: Return location for IDENTIFY data.
 299  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 300  *
 301  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 302  * device represented by @fd. If successful, then the result will be
 303  * copied into @out_identify and @out_is_packet_device.
 304  *
 305  * This routine is based on code from libatasmart, LGPL v2.1.
 306  *
 307  * Returns: 0 if the data was successfully obtained, otherwise
 308  * non-zero with errno set.
 309  */
 310 static int disk_identify(int fd,
 311                          uint8_t out_identify[512],
 312                          int *out_is_packet_device) {
 313         int ret;
 314         uint8_t inquiry_buf[36];
 315         int peripheral_device_type;
 316         int all_nul_bytes;
 317         int n;
 318         int is_packet_device = 0;
 319
 320         /* init results */
 321         memzero(out_identify, 512);
 322
 323         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 324          * we could accidentally blank media. This is because MMC's BLANK
 325          * command has the same op-code (0x61).
 326          *
 327          * To prevent this from happening we bail out if the device
 328          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 329          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 330          * command first... libata is handling this via its SCSI
 331          * emulation layer.
 332          *
 333          * This also ensures that we're actually dealing with a device
 334          * that understands SCSI commands.
 335          *
 336          * (Yes, it is a bit perverse that we're tunneling the ATA
 337          * command through SCSI and relying on the ATA driver
 338          * emulating SCSI well-enough...)
 339          *
 340          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 341          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 342          * for the original bug-report.)
 343          */
 344         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 345         if (ret != 0)
 346                 goto out;
 347
 348         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 349         peripheral_device_type = inquiry_buf[0] & 0x1f;
 350         if (peripheral_device_type == 0x05)
 351           {
 352             is_packet_device = 1;
 353             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 354             goto check_nul_bytes;
 355           }
 356         if (peripheral_device_type != 0x00) {
 357                 ret = -1;
 358                 errno = EIO;
 359                 goto out;
 360         }
 361
 362         /* OK, now issue the IDENTIFY DEVICE command */
 363         ret = disk_identify_command(fd, out_identify, 512);
 364         if (ret != 0)
 365                 goto out;
 366
 367  check_nul_bytes:
 368          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 369         all_nul_bytes = 1;
 370         for (n = 0; n < 512; n++) {
 371                 if (out_identify[n] != '\0') {
 372                         all_nul_bytes = 0;
 373                         break;
 374                 }
 375         }
 376
 377         if (all_nul_bytes) {
 378                 ret = -1;
 379                 errno = EIO;
 380                 goto out;
 381         }
 382
 383 out:
 384         if (out_is_packet_device != NULL)
 385                 *out_is_packet_device = is_packet_device;
 386         return ret;
 387 }
 388
 389 int main(int argc, char *argv[]) {
 390         struct hd_driveid id;
 391         union {
 392                 uint8_t  byte[512];
 393                 uint16_t wyde[256];
 394         } identify;
 395         char model[41];
 396         char model_enc[256];
 397         char serial[21];
 398         char revision[9];
 399         const char *node = NULL;
 400         int export = 0;
 401         _cleanup_close_ int fd = -1;
 402         uint16_t word;
 403         int is_packet_device = 0;
 404         static const struct option options[] = {
 405                 { "export", no_argument, NULL, 'x' },
 406                 { "help", no_argument, NULL, 'h' },
 407                 {}
 408         };
 409
 410         log_set_target(LOG_TARGET_AUTO);
 411         udev_parse_config();
 412         log_parse_environment();
 413         log_open();
 414
 415         for (;;) {
 416                 int option;
 417
 418                 option = getopt_long(argc, argv, "xh", options, NULL);
 419                 if (option == -1)
 420                         break;
 421
 422                 switch (option) {
 423                 case 'x':
 424                         export = 1;
 425                         break;
 426                 case 'h':
 427                         printf("Usage: ata_id [--export] [--help] <device>\n"
 428                                "  -x,--export    print values as environment keys\n"
 429                                "  -h,--help      print this help text\n\n");
 430                         return 0;
 431                 }
 432         }
 433
 434         node = argv[optind];
 435         if (node == NULL) {
 436                 log_error("no node specified");
 437                 return 1;
 438         }
 439
 440         fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
 441         if (fd < 0) {
 442                 log_error("unable to open '%s'", node);
 443                 return 1;
 444         }
 445
 446         if (disk_identify(fd, identify.byte, &is_packet_device) == 0) {
 447                 /*
 448                  * fix up only the fields from the IDENTIFY data that we are going to
 449                  * use and copy it into the hd_driveid struct for convenience
 450                  */
 451                 disk_identify_fixup_string(identify.byte,  10, 20); /* serial */
 452                 disk_identify_fixup_string(identify.byte,  23,  8); /* fwrev */
 453                 disk_identify_fixup_string(identify.byte,  27, 40); /* model */
 454                 disk_identify_fixup_uint16(identify.byte,  0);      /* configuration */
 455                 disk_identify_fixup_uint16(identify.byte,  75);     /* queue depth */
 456                 disk_identify_fixup_uint16(identify.byte,  76);     /* SATA capabilities */
 457                 disk_identify_fixup_uint16(identify.byte,  82);     /* command set supported */
 458                 disk_identify_fixup_uint16(identify.byte,  83);     /* command set supported */
 459                 disk_identify_fixup_uint16(identify.byte,  84);     /* command set supported */
 460                 disk_identify_fixup_uint16(identify.byte,  85);     /* command set supported */
 461                 disk_identify_fixup_uint16(identify.byte,  86);     /* command set supported */
 462                 disk_identify_fixup_uint16(identify.byte,  87);     /* command set supported */
 463                 disk_identify_fixup_uint16(identify.byte,  89);     /* time required for SECURITY ERASE UNIT */
 464                 disk_identify_fixup_uint16(identify.byte,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 465                 disk_identify_fixup_uint16(identify.byte,  91);     /* current APM values */
 466                 disk_identify_fixup_uint16(identify.byte,  94);     /* current AAM value */
 467                 disk_identify_fixup_uint16(identify.byte, 108);     /* WWN */
 468                 disk_identify_fixup_uint16(identify.byte, 109);     /* WWN */
 469                 disk_identify_fixup_uint16(identify.byte, 110);     /* WWN */
 470                 disk_identify_fixup_uint16(identify.byte, 111);     /* WWN */
 471                 disk_identify_fixup_uint16(identify.byte, 128);     /* device lock function */
 472                 disk_identify_fixup_uint16(identify.byte, 217);     /* nominal media rotation rate */
 473                 memcpy(&id, identify.byte, sizeof id);
 474         } else {
 475                 /* If this fails, then try HDIO_GET_IDENTITY */
 476                 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
 477                         log_debug_errno(errno, "HDIO_GET_IDENTITY failed for '%s': %m", node);
 478                         return 2;
 479                 }
 480         }
 481
 482         memcpy(model, id.model, 40);
 483         model[40] = '\0';
 484         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 485         util_replace_whitespace((char *) id.model, model, 40);
 486         util_replace_chars(model, NULL);
 487         util_replace_whitespace((char *) id.serial_no, serial, 20);
 488         util_replace_chars(serial, NULL);
 489         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 490         util_replace_chars(revision, NULL);
 491
 492         if (export) {
 493                 /* Set this to convey the disk speaks the ATA protocol */
 494                 printf("ID_ATA=1\n");
 495
 496                 if ((id.config >> 8) & 0x80) {
 497                         /* This is an ATAPI device */
 498                         switch ((id.config >> 8) & 0x1f) {
 499                         case 0:
 500                                 printf("ID_TYPE=cd\n");
 501                                 break;
 502                         case 1:
 503                                 printf("ID_TYPE=tape\n");
 504                                 break;
 505                         case 5:
 506                                 printf("ID_TYPE=cd\n");
 507                                 break;
 508                         case 7:
 509                                 printf("ID_TYPE=optical\n");
 510                                 break;
 511                         default:
 512                                 printf("ID_TYPE=generic\n");
 513                                 break;
 514                         }
 515                 } else {
 516                         printf("ID_TYPE=disk\n");
 517                 }
 518                 printf("ID_BUS=ata\n");
 519                 printf("ID_MODEL=%s\n", model);
 520                 printf("ID_MODEL_ENC=%s\n", model_enc);
 521                 printf("ID_REVISION=%s\n", revision);
 522                 if (serial[0] != '\0') {
 523                         printf("ID_SERIAL=%s_%s\n", model, serial);
 524                         printf("ID_SERIAL_SHORT=%s\n", serial);
 525                 } else {
 526                         printf("ID_SERIAL=%s\n", model);
 527                 }
 528
 529                 if (id.command_set_1 & (1<<5)) {
 530                         printf("ID_ATA_WRITE_CACHE=1\n");
 531                         printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 532                 }
 533                 if (id.command_set_1 & (1<<10)) {
 534                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 535                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 536
 537                         /*
 538                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 539                          * so it is easy to check whether the protected area is in use.
 540                          */
 541                 }
 542                 if (id.command_set_1 & (1<<3)) {
 543                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 544                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 545                 }
 546                 if (id.command_set_1 & (1<<1)) {
 547                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 548                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 549                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 550                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 551                                 if (id.dlf & (1<<8))
 552                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 553                                 else
 554                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 555                         }
 556                         if (id.dlf & (1<<5))
 557                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 558                         if (id.dlf & (1<<4))
 559                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 560                         if (id.dlf & (1<<3))
 561                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 562                         if (id.dlf & (1<<2))
 563                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 564                 }
 565                 if (id.command_set_1 & (1<<0)) {
 566                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 567                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 568                 }
 569                 if (id.command_set_2 & (1<<9)) {
 570                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 571                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 572                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 573                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 574                 }
 575                 if (id.command_set_2 & (1<<5)) {
 576                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 577                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 578                 }
 579                 if (id.command_set_2 & (1<<3)) {
 580                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 581                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 582                         if ((id.cfs_enable_2 & (1<<3)))
 583                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 584                 }
 585                 if (id.command_set_2 & (1<<0))
 586                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 587
 588                 /*
 589                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 590                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 591                  * the device does not claim compliance with the Serial ATA specification and words
 592                  * 76 through 79 are not valid and shall be ignored.
 593                  */
 594
 595                 word = identify.wyde[76];
 596                 if (!IN_SET(word, 0x0000, 0xffff)) {
 597                         printf("ID_ATA_SATA=1\n");
 598                         /*
 599                          * If bit 2 of word 76 is set to one, then the device supports the Gen2
 600                          * signaling rate of 3.0 Gb/s (see SATA 2.6).
 601                          *
 602                          * If bit 1 of word 76 is set to one, then the device supports the Gen1
 603                          * signaling rate of 1.5 Gb/s (see SATA 2.6).
 604                          */
 605                         if (word & (1<<2))
 606                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
 607                         if (word & (1<<1))
 608                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
 609                 }
 610
 611                 /* Word 217 indicates the nominal media rotation rate of the device */
 612                 word = identify.wyde[217];
 613                 if (word == 0x0001)
 614                         printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
 615                 else if (word >= 0x0401 && word <= 0xfffe)
 616                         printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
 617
 618                 /*
 619                  * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
 620                  * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
 621                  * All other values are reserved.
 622                  */
 623                 word = identify.wyde[108];
 624                 if ((word & 0xf000) == 0x5000) {
 625                         uint64_t wwwn;
 626
 627                         wwwn   = identify.wyde[108];
 628                         wwwn <<= 16;
 629                         wwwn  |= identify.wyde[109];
 630                         wwwn <<= 16;
 631                         wwwn  |= identify.wyde[110];
 632                         wwwn <<= 16;
 633                         wwwn  |= identify.wyde[111];
 634                         printf("ID_WWN=0x%1$" PRIx64 "\n"
 635                                "ID_WWN_WITH_EXTENSION=0x%1$" PRIx64 "\n",
 636                                wwwn);
 637                 }
 638
 639                 /* from Linux's include/linux/ata.h */
 640                 if (IN_SET(identify.wyde[0], 0x848a, 0x844a) ||
 641                     (identify.wyde[83] & 0xc004) == 0x4004)
 642                         printf("ID_ATA_CFA=1\n");
 643         } else {
 644                 if (serial[0] != '\0')
 645                         printf("%s_%s\n", model, serial);
 646                 else
 647                         printf("%s\n", model);
 648         }
 649
 650         return 0;
 651 }