src/udev/ata_id/ata_id.c

   1 /*
   2  * ata_id - reads product/serial number from ATA drives
   3  *
   4  * Copyright (C) 2005-2008 Kay Sievers <kay@vrfy.org>
   5  * Copyright (C) 2009 Lennart Poettering <lennart@poettering.net>
   6  * Copyright (C) 2009-2010 David Zeuthen <zeuthen@gmail.com>
   7  *
   8  * This program is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <stdint.h>
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <errno.h>
  30 #include <getopt.h>
  31 #include <scsi/scsi.h>
  32 #include <scsi/sg.h>
  33 #include <scsi/scsi_ioctl.h>
  34 #include <sys/ioctl.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <linux/hdreg.h>
  38 #include <linux/bsg.h>
  39
  40 #include "libudev.h"
  41 #include "libudev-private.h"
  42 #include "udev-util.h"
  43 #include "log.h"
  44
  45 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
  46
  47 static int disk_scsi_inquiry_command(int      fd,
  48                                      void    *buf,
  49                                      size_t   buf_len)
  50 {
  51         uint8_t cdb[6] = {
  52                 /*
  53                  * INQUIRY, see SPC-4 section 6.4
  54                  */
  55                 [0] = 0x12,                /* OPERATION CODE: INQUIRY */
  56                 [3] = (buf_len >> 8),      /* ALLOCATION LENGTH */
  57                 [4] = (buf_len & 0xff),
  58         };
  59         uint8_t sense[32] = {};
  60         struct sg_io_v4 io_v4 = {
  61                 .guard = 'Q',
  62                 .protocol = BSG_PROTOCOL_SCSI,
  63                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
  64                 .request_len = sizeof(cdb),
  65                 .request = (uintptr_t) cdb,
  66                 .max_response_len = sizeof(sense),
  67                 .response = (uintptr_t) sense,
  68                 .din_xfer_len = buf_len,
  69                 .din_xferp = (uintptr_t) buf,
  70                 .timeout = COMMAND_TIMEOUT_MSEC,
  71         };
  72         int ret;
  73
  74         ret = ioctl(fd, SG_IO, &io_v4);
  75         if (ret != 0) {
  76                 /* could be that the driver doesn't do version 4, try version 3 */
  77                 if (errno == EINVAL) {
  78                         struct sg_io_hdr io_hdr = {
  79                                 .interface_id = 'S',
  80                                 .cmdp = (unsigned char*) cdb,
  81                                 .cmd_len = sizeof (cdb),
  82                                 .dxferp = buf,
  83                                 .dxfer_len = buf_len,
  84                                 .sbp = sense,
  85                                 .mx_sb_len = sizeof(sense),
  86                                 .dxfer_direction = SG_DXFER_FROM_DEV,
  87                                 .timeout = COMMAND_TIMEOUT_MSEC,
  88                         };
  89
  90                         ret = ioctl(fd, SG_IO, &io_hdr);
  91                         if (ret != 0)
  92                                 return ret;
  93
  94                         /* even if the ioctl succeeds, we need to check the return value */
  95                         if (!(io_hdr.status == 0 &&
  96                               io_hdr.host_status == 0 &&
  97                               io_hdr.driver_status == 0)) {
  98                                 errno = EIO;
  99                                 return -1;
 100                         }
 101                 } else
 102                         return ret;
 103         }
 104
 105         /* even if the ioctl succeeds, we need to check the return value */
 106         if (!(io_v4.device_status == 0 &&
 107               io_v4.transport_status == 0 &&
 108               io_v4.driver_status == 0)) {
 109                 errno = EIO;
 110                 return -1;
 111         }
 112
 113         return 0;
 114 }
 115
 116 static int disk_identify_command(int          fd,
 117                                  void         *buf,
 118                                  size_t          buf_len)
 119 {
 120         uint8_t cdb[12] = {
 121                 /*
 122                  * ATA Pass-Through 12 byte command, as described in
 123                  *
 124                  *  T10 04-262r8 ATA Command Pass-Through
 125                  *
 126                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 127                  */
 128                 [0] = 0xa1,     /* OPERATION CODE: 12 byte pass through */
 129                 [1] = 4 << 1,   /* PROTOCOL: PIO Data-in */
 130                 [2] = 0x2e,     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 131                 [3] = 0,        /* FEATURES */
 132                 [4] = 1,        /* SECTORS */
 133                 [5] = 0,        /* LBA LOW */
 134                 [6] = 0,        /* LBA MID */
 135                 [7] = 0,        /* LBA HIGH */
 136                 [8] = 0 & 0x4F, /* SELECT */
 137                 [9] = 0xEC,     /* Command: ATA IDENTIFY DEVICE */
 138         };
 139         uint8_t sense[32] = {};
 140         uint8_t *desc = sense + 8;
 141         struct sg_io_v4 io_v4 = {
 142                 .guard = 'Q',
 143                 .protocol = BSG_PROTOCOL_SCSI,
 144                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 145                 .request_len = sizeof(cdb),
 146                 .request = (uintptr_t) cdb,
 147                 .max_response_len = sizeof(sense),
 148                 .response = (uintptr_t) sense,
 149                 .din_xfer_len = buf_len,
 150                 .din_xferp = (uintptr_t) buf,
 151                 .timeout = COMMAND_TIMEOUT_MSEC,
 152         };
 153         int ret;
 154
 155         ret = ioctl(fd, SG_IO, &io_v4);
 156         if (ret != 0) {
 157                 /* could be that the driver doesn't do version 4, try version 3 */
 158                 if (errno == EINVAL) {
 159                         struct sg_io_hdr io_hdr = {
 160                                 .interface_id = 'S',
 161                                 .cmdp = (unsigned char*) cdb,
 162                                 .cmd_len = sizeof (cdb),
 163                                 .dxferp = buf,
 164                                 .dxfer_len = buf_len,
 165                                 .sbp = sense,
 166                                 .mx_sb_len = sizeof (sense),
 167                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 168                                 .timeout = COMMAND_TIMEOUT_MSEC,
 169                         };
 170
 171                         ret = ioctl(fd, SG_IO, &io_hdr);
 172                         if (ret != 0)
 173                                 return ret;
 174                 } else
 175                         return ret;
 176         }
 177
 178         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 179                 errno = EIO;
 180                 return -1;
 181         }
 182
 183         return 0;
 184 }
 185
 186 static int disk_identify_packet_device_command(int          fd,
 187                                                void         *buf,
 188                                                size_t          buf_len)
 189 {
 190         uint8_t cdb[16] = {
 191                 /*
 192                  * ATA Pass-Through 16 byte command, as described in
 193                  *
 194                  *  T10 04-262r8 ATA Command Pass-Through
 195                  *
 196                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 197                  */
 198                 [0] = 0x85,   /* OPERATION CODE: 16 byte pass through */
 199                 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
 200                 [2] = 0x2e,   /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 201                 [3] = 0,      /* FEATURES */
 202                 [4] = 0,      /* FEATURES */
 203                 [5] = 0,      /* SECTORS */
 204                 [6] = 1,      /* SECTORS */
 205                 [7] = 0,      /* LBA LOW */
 206                 [8] = 0,      /* LBA LOW */
 207                 [9] = 0,      /* LBA MID */
 208                 [10] = 0,     /* LBA MID */
 209                 [11] = 0,     /* LBA HIGH */
 210                 [12] = 0,     /* LBA HIGH */
 211                 [13] = 0,     /* DEVICE */
 212                 [14] = 0xA1,  /* Command: ATA IDENTIFY PACKET DEVICE */
 213                 [15] = 0,     /* CONTROL */
 214         };
 215         uint8_t sense[32] = {};
 216         uint8_t *desc = sense + 8;
 217         struct sg_io_v4 io_v4 = {
 218                 .guard = 'Q',
 219                 .protocol = BSG_PROTOCOL_SCSI,
 220                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 221                 .request_len = sizeof (cdb),
 222                 .request = (uintptr_t) cdb,
 223                 .max_response_len = sizeof (sense),
 224                 .response = (uintptr_t) sense,
 225                 .din_xfer_len = buf_len,
 226                 .din_xferp = (uintptr_t) buf,
 227                 .timeout = COMMAND_TIMEOUT_MSEC,
 228         };
 229         int ret;
 230
 231         ret = ioctl(fd, SG_IO, &io_v4);
 232         if (ret != 0) {
 233                 /* could be that the driver doesn't do version 4, try version 3 */
 234                 if (errno == EINVAL) {
 235                         struct sg_io_hdr io_hdr = {
 236                                 .interface_id = 'S',
 237                                 .cmdp = (unsigned char*) cdb,
 238                                 .cmd_len = sizeof (cdb),
 239                                 .dxferp = buf,
 240                                 .dxfer_len = buf_len,
 241                                 .sbp = sense,
 242                                 .mx_sb_len = sizeof (sense),
 243                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 244                                 .timeout = COMMAND_TIMEOUT_MSEC,
 245                         };
 246
 247                         ret = ioctl(fd, SG_IO, &io_hdr);
 248                         if (ret != 0)
 249                                 return ret;
 250                 } else
 251                         return ret;
 252         }
 253
 254         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 255                 errno = EIO;
 256                 return -1;
 257         }
 258
 259         return 0;
 260 }
 261
 262 /**
 263  * disk_identify_get_string:
 264  * @identify: A block of IDENTIFY data
 265  * @offset_words: Offset of the string to get, in words.
 266  * @dest: Destination buffer for the string.
 267  * @dest_len: Length of destination buffer, in bytes.
 268  *
 269  * Copies the ATA string from @identify located at @offset_words into @dest.
 270  */
 271 static void disk_identify_get_string(uint8_t identify[512],
 272                                      unsigned int offset_words,
 273                                      char *dest,
 274                                      size_t dest_len)
 275 {
 276         unsigned int c1;
 277         unsigned int c2;
 278
 279         while (dest_len > 0) {
 280                 c1 = identify[offset_words * 2 + 1];
 281                 c2 = identify[offset_words * 2];
 282                 *dest = c1;
 283                 dest++;
 284                 *dest = c2;
 285                 dest++;
 286                 offset_words++;
 287                 dest_len -= 2;
 288         }
 289 }
 290
 291 static void disk_identify_fixup_string(uint8_t identify[512],
 292                                        unsigned int offset_words,
 293                                        size_t len)
 294 {
 295         disk_identify_get_string(identify, offset_words,
 296                                  (char *) identify + offset_words * 2, len);
 297 }
 298
 299 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
 300 {
 301         uint16_t *p;
 302
 303         p = (uint16_t *) identify;
 304         p[offset_words] = le16toh (p[offset_words]);
 305 }
 306
 307 /**
 308  * disk_identify:
 309  * @udev: The libudev context.
 310  * @fd: File descriptor for the block device.
 311  * @out_identify: Return location for IDENTIFY data.
 312  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 313  *
 314  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 315  * device represented by @fd. If successful, then the result will be
 316  * copied into @out_identify and @out_is_packet_device.
 317  *
 318  * This routine is based on code from libatasmart, Copyright 2008
 319  * Lennart Poettering, LGPL v2.1.
 320  *
 321  * Returns: 0 if the data was successfully obtained, otherwise
 322  * non-zero with errno set.
 323  */
 324 static int disk_identify(struct udev *udev,
 325                          int fd,
 326                          uint8_t out_identify[512],
 327                          int *out_is_packet_device)
 328 {
 329         int ret;
 330         uint8_t inquiry_buf[36];
 331         int peripheral_device_type;
 332         int all_nul_bytes;
 333         int n;
 334         int is_packet_device = 0;
 335
 336         /* init results */
 337         memzero(out_identify, 512);
 338
 339         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 340          * we could accidentally blank media. This is because MMC's BLANK
 341          * command has the same op-code (0x61).
 342          *
 343          * To prevent this from happening we bail out if the device
 344          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 345          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 346          * command first... libata is handling this via its SCSI
 347          * emulation layer.
 348          *
 349          * This also ensures that we're actually dealing with a device
 350          * that understands SCSI commands.
 351          *
 352          * (Yes, it is a bit perverse that we're tunneling the ATA
 353          * command through SCSI and relying on the ATA driver
 354          * emulating SCSI well-enough...)
 355          *
 356          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 357          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 358          * for the original bug-report.)
 359          */
 360         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 361         if (ret != 0)
 362                 goto out;
 363
 364         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 365         peripheral_device_type = inquiry_buf[0] & 0x1f;
 366         if (peripheral_device_type == 0x05)
 367           {
 368             is_packet_device = 1;
 369             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 370             goto check_nul_bytes;
 371           }
 372         if (peripheral_device_type != 0x00) {
 373                 ret = -1;
 374                 errno = EIO;
 375                 goto out;
 376         }
 377
 378         /* OK, now issue the IDENTIFY DEVICE command */
 379         ret = disk_identify_command(fd, out_identify, 512);
 380         if (ret != 0)
 381                 goto out;
 382
 383  check_nul_bytes:
 384          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 385         all_nul_bytes = 1;
 386         for (n = 0; n < 512; n++) {
 387                 if (out_identify[n] != '\0') {
 388                         all_nul_bytes = 0;
 389                         break;
 390                 }
 391         }
 392
 393         if (all_nul_bytes) {
 394                 ret = -1;
 395                 errno = EIO;
 396                 goto out;
 397         }
 398
 399 out:
 400         if (out_is_packet_device != NULL)
 401                 *out_is_packet_device = is_packet_device;
 402         return ret;
 403 }
 404
 405 int main(int argc, char *argv[])
 406 {
 407         _cleanup_udev_unref_ struct udev *udev = NULL;
 408         struct hd_driveid id;
 409         union {
 410                 uint8_t  byte[512];
 411                 uint16_t wyde[256];
 412                 uint64_t octa[64];
 413         } identify;
 414         char model[41];
 415         char model_enc[256];
 416         char serial[21];
 417         char revision[9];
 418         const char *node = NULL;
 419         int export = 0;
 420         _cleanup_close_ int fd = -1;
 421         uint16_t word;
 422         int is_packet_device = 0;
 423         static const struct option options[] = {
 424                 { "export", no_argument, NULL, 'x' },
 425                 { "help", no_argument, NULL, 'h' },
 426                 {}
 427         };
 428
 429         log_parse_environment();
 430         log_open();
 431
 432         udev = udev_new();
 433         if (udev == NULL)
 434                 return 0;
 435
 436         while (1) {
 437                 int option;
 438
 439                 option = getopt_long(argc, argv, "xh", options, NULL);
 440                 if (option == -1)
 441                         break;
 442
 443                 switch (option) {
 444                 case 'x':
 445                         export = 1;
 446                         break;
 447                 case 'h':
 448                         printf("Usage: ata_id [--export] [--help] <device>\n"
 449                                "  -x,--export    print values as environment keys\n"
 450                                "  -h,--help      print this help text\n\n");
 451                         return 0;
 452                 }
 453         }
 454
 455         node = argv[optind];
 456         if (node == NULL) {
 457                 log_error("no node specified");
 458                 return 1;
 459         }
 460
 461         fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
 462         if (fd < 0) {
 463                 log_error("unable to open '%s'", node);
 464                 return 1;
 465         }
 466
 467         if (disk_identify(udev, fd, identify.byte, &is_packet_device) == 0) {
 468                 /*
 469                  * fix up only the fields from the IDENTIFY data that we are going to
 470                  * use and copy it into the hd_driveid struct for convenience
 471                  */
 472                 disk_identify_fixup_string(identify.byte,  10, 20); /* serial */
 473                 disk_identify_fixup_string(identify.byte,  23,  8); /* fwrev */
 474                 disk_identify_fixup_string(identify.byte,  27, 40); /* model */
 475                 disk_identify_fixup_uint16(identify.byte,  0);      /* configuration */
 476                 disk_identify_fixup_uint16(identify.byte,  75);     /* queue depth */
 477                 disk_identify_fixup_uint16(identify.byte,  75);     /* SATA capabilities */
 478                 disk_identify_fixup_uint16(identify.byte,  82);     /* command set supported */
 479                 disk_identify_fixup_uint16(identify.byte,  83);     /* command set supported */
 480                 disk_identify_fixup_uint16(identify.byte,  84);     /* command set supported */
 481                 disk_identify_fixup_uint16(identify.byte,  85);     /* command set supported */
 482                 disk_identify_fixup_uint16(identify.byte,  86);     /* command set supported */
 483                 disk_identify_fixup_uint16(identify.byte,  87);     /* command set supported */
 484                 disk_identify_fixup_uint16(identify.byte,  89);     /* time required for SECURITY ERASE UNIT */
 485                 disk_identify_fixup_uint16(identify.byte,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 486                 disk_identify_fixup_uint16(identify.byte,  91);     /* current APM values */
 487                 disk_identify_fixup_uint16(identify.byte,  94);     /* current AAM value */
 488                 disk_identify_fixup_uint16(identify.byte, 128);     /* device lock function */
 489                 disk_identify_fixup_uint16(identify.byte, 217);     /* nominal media rotation rate */
 490                 memcpy(&id, identify.byte, sizeof id);
 491         } else {
 492                 /* If this fails, then try HDIO_GET_IDENTITY */
 493                 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
 494                         log_debug_errno(errno, "HDIO_GET_IDENTITY failed for '%s': %m", node);
 495                         return 2;
 496                 }
 497         }
 498
 499         memcpy(model, id.model, 40);
 500         model[40] = '\0';
 501         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 502         util_replace_whitespace((char *) id.model, model, 40);
 503         util_replace_chars(model, NULL);
 504         util_replace_whitespace((char *) id.serial_no, serial, 20);
 505         util_replace_chars(serial, NULL);
 506         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 507         util_replace_chars(revision, NULL);
 508
 509         if (export) {
 510                 /* Set this to convey the disk speaks the ATA protocol */
 511                 printf("ID_ATA=1\n");
 512
 513                 if ((id.config >> 8) & 0x80) {
 514                         /* This is an ATAPI device */
 515                         switch ((id.config >> 8) & 0x1f) {
 516                         case 0:
 517                                 printf("ID_TYPE=cd\n");
 518                                 break;
 519                         case 1:
 520                                 printf("ID_TYPE=tape\n");
 521                                 break;
 522                         case 5:
 523                                 printf("ID_TYPE=cd\n");
 524                                 break;
 525                         case 7:
 526                                 printf("ID_TYPE=optical\n");
 527                                 break;
 528                         default:
 529                                 printf("ID_TYPE=generic\n");
 530                                 break;
 531                         }
 532                 } else {
 533                         printf("ID_TYPE=disk\n");
 534                 }
 535                 printf("ID_BUS=ata\n");
 536                 printf("ID_MODEL=%s\n", model);
 537                 printf("ID_MODEL_ENC=%s\n", model_enc);
 538                 printf("ID_REVISION=%s\n", revision);
 539                 if (serial[0] != '\0') {
 540                         printf("ID_SERIAL=%s_%s\n", model, serial);
 541                         printf("ID_SERIAL_SHORT=%s\n", serial);
 542                 } else {
 543                         printf("ID_SERIAL=%s\n", model);
 544                 }
 545
 546                 if (id.command_set_1 & (1<<5)) {
 547                         printf("ID_ATA_WRITE_CACHE=1\n");
 548                         printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 549                 }
 550                 if (id.command_set_1 & (1<<10)) {
 551                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 552                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 553
 554                         /*
 555                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 556                          * so it is easy to check whether the protected area is in use.
 557                          */
 558                 }
 559                 if (id.command_set_1 & (1<<3)) {
 560                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 561                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 562                 }
 563                 if (id.command_set_1 & (1<<1)) {
 564                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 565                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 566                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 567                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 568                                 if (id.dlf & (1<<8))
 569                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 570                                 else
 571                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 572                         }
 573                         if (id.dlf & (1<<5))
 574                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 575                         if (id.dlf & (1<<4))
 576                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 577                         if (id.dlf & (1<<3))
 578                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 579                         if (id.dlf & (1<<2))
 580                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 581                 }
 582                 if (id.command_set_1 & (1<<0)) {
 583                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 584                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 585                 }
 586                 if (id.command_set_2 & (1<<9)) {
 587                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 588                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 589                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 590                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 591                 }
 592                 if (id.command_set_2 & (1<<5)) {
 593                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 594                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 595                 }
 596                 if (id.command_set_2 & (1<<3)) {
 597                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 598                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 599                         if ((id.cfs_enable_2 & (1<<3)))
 600                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 601                 }
 602                 if (id.command_set_2 & (1<<0))
 603                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 604
 605                 /*
 606                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 607                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 608                  * the device does not claim compliance with the Serial ATA specification and words
 609                  * 76 through 79 are not valid and shall be ignored.
 610                  */
 611
 612                 word = identify.wyde[76];
 613                 if (word != 0x0000 && word != 0xffff) {
 614                         printf("ID_ATA_SATA=1\n");
 615                         /*
 616                          * If bit 2 of word 76 is set to one, then the device supports the Gen2
 617                          * signaling rate of 3.0 Gb/s (see SATA 2.6).
 618                          *
 619                          * If bit 1 of word 76 is set to one, then the device supports the Gen1
 620                          * signaling rate of 1.5 Gb/s (see SATA 2.6).
 621                          */
 622                         if (word & (1<<2))
 623                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
 624                         if (word & (1<<1))
 625                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
 626                 }
 627
 628                 /* Word 217 indicates the nominal media rotation rate of the device */
 629                 word = identify.wyde[217];
 630                 if (word == 0x0001)
 631                         printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
 632                 else if (word >= 0x0401 && word <= 0xfffe)
 633                         printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
 634
 635                 /*
 636                  * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
 637                  * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
 638                  * All other values are reserved.
 639                  */
 640                 word = identify.wyde[108];
 641                 if ((word & 0xf000) == 0x5000) {
 642                         uint64_t wwwn;
 643
 644                         wwwn   = identify.wyde[108];
 645                         wwwn <<= 16;
 646                         wwwn  |= identify.wyde[109];
 647                         wwwn <<= 16;
 648                         wwwn  |= identify.wyde[110];
 649                         wwwn <<= 16;
 650                         wwwn  |= identify.wyde[111];
 651                         printf("ID_WWN=0x%1$" PRIx64 "\n"
 652                                "ID_WWN_WITH_EXTENSION=0x%1$" PRIx64 "\n",
 653                                wwwn);
 654                 }
 655
 656                 /* from Linux's include/linux/ata.h */
 657                 if (identify.wyde[0] == 0x848a ||
 658                     identify.wyde[0] == 0x844a ||
 659                     (identify.wyde[83] & 0xc004) == 0x4004)
 660                         printf("ID_ATA_CFA=1\n");
 661         } else {
 662                 if (serial[0] != '\0')
 663                         printf("%s_%s\n", model, serial);
 664                 else
 665                         printf("%s\n", model);
 666         }
 667
 668         return 0;
 669 }