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 <ctype.h>
  23 #include <errno.h>
  24 #include <fcntl.h>
  25 #include <getopt.h>
  26 #include <linux/bsg.h>
  27 #include <linux/hdreg.h>
  28 #include <scsi/scsi.h>
  29 #include <scsi/scsi_ioctl.h>
  30 #include <scsi/sg.h>
  31 #include <stdint.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <sys/ioctl.h>
  36 #include <sys/stat.h>
  37 #include <sys/types.h>
  38 #include <unistd.h>
  39
  40 #include "libudev.h"
  41
  42 #include "fd-util.h"
  43 #include "libudev-private.h"
  44 #include "log.h"
  45 #include "udev-util.h"
  46
  47 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
  48
  49 static int disk_scsi_inquiry_command(int      fd,
  50                                      void    *buf,
  51                                      size_t   buf_len)
  52 {
  53         uint8_t cdb[6] = {
  54                 /*
  55                  * INQUIRY, see SPC-4 section 6.4
  56                  */
  57                 [0] = 0x12,                /* OPERATION CODE: INQUIRY */
  58                 [3] = (buf_len >> 8),      /* ALLOCATION LENGTH */
  59                 [4] = (buf_len & 0xff),
  60         };
  61         uint8_t sense[32] = {};
  62         struct sg_io_v4 io_v4 = {
  63                 .guard = 'Q',
  64                 .protocol = BSG_PROTOCOL_SCSI,
  65                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
  66                 .request_len = sizeof(cdb),
  67                 .request = (uintptr_t) cdb,
  68                 .max_response_len = sizeof(sense),
  69                 .response = (uintptr_t) sense,
  70                 .din_xfer_len = buf_len,
  71                 .din_xferp = (uintptr_t) buf,
  72                 .timeout = COMMAND_TIMEOUT_MSEC,
  73         };
  74         int ret;
  75
  76         ret = ioctl(fd, SG_IO, &io_v4);
  77         if (ret != 0) {
  78                 /* could be that the driver doesn't do version 4, try version 3 */
  79                 if (errno == EINVAL) {
  80                         struct sg_io_hdr io_hdr = {
  81                                 .interface_id = 'S',
  82                                 .cmdp = (unsigned char*) cdb,
  83                                 .cmd_len = sizeof (cdb),
  84                                 .dxferp = buf,
  85                                 .dxfer_len = buf_len,
  86                                 .sbp = sense,
  87                                 .mx_sb_len = sizeof(sense),
  88                                 .dxfer_direction = SG_DXFER_FROM_DEV,
  89                                 .timeout = COMMAND_TIMEOUT_MSEC,
  90                         };
  91
  92                         ret = ioctl(fd, SG_IO, &io_hdr);
  93                         if (ret != 0)
  94                                 return ret;
  95
  96                         /* even if the ioctl succeeds, we need to check the return value */
  97                         if (!(io_hdr.status == 0 &&
  98                               io_hdr.host_status == 0 &&
  99                               io_hdr.driver_status == 0)) {
 100                                 errno = EIO;
 101                                 return -1;
 102                         }
 103                 } else
 104                         return ret;
 105         }
 106
 107         /* even if the ioctl succeeds, we need to check the return value */
 108         if (!(io_v4.device_status == 0 &&
 109               io_v4.transport_status == 0 &&
 110               io_v4.driver_status == 0)) {
 111                 errno = EIO;
 112                 return -1;
 113         }
 114
 115         return 0;
 116 }
 117
 118 static int disk_identify_command(int          fd,
 119                                  void         *buf,
 120                                  size_t          buf_len)
 121 {
 122         uint8_t cdb[12] = {
 123                 /*
 124                  * ATA Pass-Through 12 byte command, as described in
 125                  *
 126                  *  T10 04-262r8 ATA Command Pass-Through
 127                  *
 128                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 129                  */
 130                 [0] = 0xa1,     /* OPERATION CODE: 12 byte pass through */
 131                 [1] = 4 << 1,   /* PROTOCOL: PIO Data-in */
 132                 [2] = 0x2e,     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 133                 [3] = 0,        /* FEATURES */
 134                 [4] = 1,        /* SECTORS */
 135                 [5] = 0,        /* LBA LOW */
 136                 [6] = 0,        /* LBA MID */
 137                 [7] = 0,        /* LBA HIGH */
 138                 [8] = 0 & 0x4F, /* SELECT */
 139                 [9] = 0xEC,     /* Command: ATA IDENTIFY DEVICE */
 140         };
 141         uint8_t sense[32] = {};
 142         uint8_t *desc = sense + 8;
 143         struct sg_io_v4 io_v4 = {
 144                 .guard = 'Q',
 145                 .protocol = BSG_PROTOCOL_SCSI,
 146                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 147                 .request_len = sizeof(cdb),
 148                 .request = (uintptr_t) cdb,
 149                 .max_response_len = sizeof(sense),
 150                 .response = (uintptr_t) sense,
 151                 .din_xfer_len = buf_len,
 152                 .din_xferp = (uintptr_t) buf,
 153                 .timeout = COMMAND_TIMEOUT_MSEC,
 154         };
 155         int ret;
 156
 157         ret = ioctl(fd, SG_IO, &io_v4);
 158         if (ret != 0) {
 159                 /* could be that the driver doesn't do version 4, try version 3 */
 160                 if (errno == EINVAL) {
 161                         struct sg_io_hdr io_hdr = {
 162                                 .interface_id = 'S',
 163                                 .cmdp = (unsigned char*) cdb,
 164                                 .cmd_len = sizeof (cdb),
 165                                 .dxferp = buf,
 166                                 .dxfer_len = buf_len,
 167                                 .sbp = sense,
 168                                 .mx_sb_len = sizeof (sense),
 169                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 170                                 .timeout = COMMAND_TIMEOUT_MSEC,
 171                         };
 172
 173                         ret = ioctl(fd, SG_IO, &io_hdr);
 174                         if (ret != 0)
 175                                 return ret;
 176                 } else
 177                         return ret;
 178         }
 179
 180         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 181                 errno = EIO;
 182                 return -1;
 183         }
 184
 185         return 0;
 186 }
 187
 188 static int disk_identify_packet_device_command(int          fd,
 189                                                void         *buf,
 190                                                size_t          buf_len)
 191 {
 192         uint8_t cdb[16] = {
 193                 /*
 194                  * ATA Pass-Through 16 byte command, as described in
 195                  *
 196                  *  T10 04-262r8 ATA Command Pass-Through
 197                  *
 198                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 199                  */
 200                 [0] = 0x85,   /* OPERATION CODE: 16 byte pass through */
 201                 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
 202                 [2] = 0x2e,   /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 203                 [3] = 0,      /* FEATURES */
 204                 [4] = 0,      /* FEATURES */
 205                 [5] = 0,      /* SECTORS */
 206                 [6] = 1,      /* SECTORS */
 207                 [7] = 0,      /* LBA LOW */
 208                 [8] = 0,      /* LBA LOW */
 209                 [9] = 0,      /* LBA MID */
 210                 [10] = 0,     /* LBA MID */
 211                 [11] = 0,     /* LBA HIGH */
 212                 [12] = 0,     /* LBA HIGH */
 213                 [13] = 0,     /* DEVICE */
 214                 [14] = 0xA1,  /* Command: ATA IDENTIFY PACKET DEVICE */
 215                 [15] = 0,     /* CONTROL */
 216         };
 217         uint8_t sense[32] = {};
 218         uint8_t *desc = sense + 8;
 219         struct sg_io_v4 io_v4 = {
 220                 .guard = 'Q',
 221                 .protocol = BSG_PROTOCOL_SCSI,
 222                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 223                 .request_len = sizeof (cdb),
 224                 .request = (uintptr_t) cdb,
 225                 .max_response_len = sizeof (sense),
 226                 .response = (uintptr_t) sense,
 227                 .din_xfer_len = buf_len,
 228                 .din_xferp = (uintptr_t) buf,
 229                 .timeout = COMMAND_TIMEOUT_MSEC,
 230         };
 231         int ret;
 232
 233         ret = ioctl(fd, SG_IO, &io_v4);
 234         if (ret != 0) {
 235                 /* could be that the driver doesn't do version 4, try version 3 */
 236                 if (errno == EINVAL) {
 237                         struct sg_io_hdr io_hdr = {
 238                                 .interface_id = 'S',
 239                                 .cmdp = (unsigned char*) cdb,
 240                                 .cmd_len = sizeof (cdb),
 241                                 .dxferp = buf,
 242                                 .dxfer_len = buf_len,
 243                                 .sbp = sense,
 244                                 .mx_sb_len = sizeof (sense),
 245                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 246                                 .timeout = COMMAND_TIMEOUT_MSEC,
 247                         };
 248
 249                         ret = ioctl(fd, SG_IO, &io_hdr);
 250                         if (ret != 0)
 251                                 return ret;
 252                 } else
 253                         return ret;
 254         }
 255
 256         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 257                 errno = EIO;
 258                 return -1;
 259         }
 260
 261         return 0;
 262 }
 263
 264 /**
 265  * disk_identify_get_string:
 266  * @identify: A block of IDENTIFY data
 267  * @offset_words: Offset of the string to get, in words.
 268  * @dest: Destination buffer for the string.
 269  * @dest_len: Length of destination buffer, in bytes.
 270  *
 271  * Copies the ATA string from @identify located at @offset_words into @dest.
 272  */
 273 static void disk_identify_get_string(uint8_t identify[512],
 274                                      unsigned int offset_words,
 275                                      char *dest,
 276                                      size_t dest_len)
 277 {
 278         unsigned int c1;
 279         unsigned int c2;
 280
 281         while (dest_len > 0) {
 282                 c1 = identify[offset_words * 2 + 1];
 283                 c2 = identify[offset_words * 2];
 284                 *dest = c1;
 285                 dest++;
 286                 *dest = c2;
 287                 dest++;
 288                 offset_words++;
 289                 dest_len -= 2;
 290         }
 291 }
 292
 293 static void disk_identify_fixup_string(uint8_t identify[512],
 294                                        unsigned int offset_words,
 295                                        size_t len)
 296 {
 297         disk_identify_get_string(identify, offset_words,
 298                                  (char *) identify + offset_words * 2, len);
 299 }
 300
 301 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
 302 {
 303         uint16_t *p;
 304
 305         p = (uint16_t *) identify;
 306         p[offset_words] = le16toh (p[offset_words]);
 307 }
 308
 309 /**
 310  * disk_identify:
 311  * @udev: The libudev context.
 312  * @fd: File descriptor for the block device.
 313  * @out_identify: Return location for IDENTIFY data.
 314  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 315  *
 316  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 317  * device represented by @fd. If successful, then the result will be
 318  * copied into @out_identify and @out_is_packet_device.
 319  *
 320  * This routine is based on code from libatasmart, Copyright 2008
 321  * Lennart Poettering, LGPL v2.1.
 322  *
 323  * Returns: 0 if the data was successfully obtained, otherwise
 324  * non-zero with errno set.
 325  */
 326 static int disk_identify(struct udev *udev,
 327                          int fd,
 328                          uint8_t out_identify[512],
 329                          int *out_is_packet_device)
 330 {
 331         int ret;
 332         uint8_t inquiry_buf[36];
 333         int peripheral_device_type;
 334         int all_nul_bytes;
 335         int n;
 336         int is_packet_device = 0;
 337
 338         /* init results */
 339         memzero(out_identify, 512);
 340
 341         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 342          * we could accidentally blank media. This is because MMC's BLANK
 343          * command has the same op-code (0x61).
 344          *
 345          * To prevent this from happening we bail out if the device
 346          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 347          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 348          * command first... libata is handling this via its SCSI
 349          * emulation layer.
 350          *
 351          * This also ensures that we're actually dealing with a device
 352          * that understands SCSI commands.
 353          *
 354          * (Yes, it is a bit perverse that we're tunneling the ATA
 355          * command through SCSI and relying on the ATA driver
 356          * emulating SCSI well-enough...)
 357          *
 358          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 359          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 360          * for the original bug-report.)
 361          */
 362         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 363         if (ret != 0)
 364                 goto out;
 365
 366         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 367         peripheral_device_type = inquiry_buf[0] & 0x1f;
 368         if (peripheral_device_type == 0x05)
 369           {
 370             is_packet_device = 1;
 371             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 372             goto check_nul_bytes;
 373           }
 374         if (peripheral_device_type != 0x00) {
 375                 ret = -1;
 376                 errno = EIO;
 377                 goto out;
 378         }
 379
 380         /* OK, now issue the IDENTIFY DEVICE command */
 381         ret = disk_identify_command(fd, out_identify, 512);
 382         if (ret != 0)
 383                 goto out;
 384
 385  check_nul_bytes:
 386          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 387         all_nul_bytes = 1;
 388         for (n = 0; n < 512; n++) {
 389                 if (out_identify[n] != '\0') {
 390                         all_nul_bytes = 0;
 391                         break;
 392                 }
 393         }
 394
 395         if (all_nul_bytes) {
 396                 ret = -1;
 397                 errno = EIO;
 398                 goto out;
 399         }
 400
 401 out:
 402         if (out_is_packet_device != NULL)
 403                 *out_is_packet_device = is_packet_device;
 404         return ret;
 405 }
 406
 407 int main(int argc, char *argv[])
 408 {
 409         _cleanup_udev_unref_ struct udev *udev = NULL;
 410         struct hd_driveid id;
 411         union {
 412                 uint8_t  byte[512];
 413                 uint16_t wyde[256];
 414         } identify;
 415         char model[41];
 416         char model_enc[256];
 417         char serial[21];
 418         char revision[9];
 419         const char *node = NULL;
 420         int export = 0;
 421         _cleanup_close_ int fd = -1;
 422         uint16_t word;
 423         int is_packet_device = 0;
 424         static const struct option options[] = {
 425                 { "export", no_argument, NULL, 'x' },
 426                 { "help", no_argument, NULL, 'h' },
 427                 {}
 428         };
 429
 430         log_parse_environment();
 431         log_open();
 432
 433         udev = udev_new();
 434         if (udev == NULL)
 435                 return 0;
 436
 437         for (;;) {
 438                 int option;
 439
 440                 option = getopt_long(argc, argv, "xh", options, NULL);
 441                 if (option == -1)
 442                         break;
 443
 444                 switch (option) {
 445                 case 'x':
 446                         export = 1;
 447                         break;
 448                 case 'h':
 449                         printf("Usage: ata_id [--export] [--help] <device>\n"
 450                                "  -x,--export    print values as environment keys\n"
 451                                "  -h,--help      print this help text\n\n");
 452                         return 0;
 453                 }
 454         }
 455
 456         node = argv[optind];
 457         if (node == NULL) {
 458                 log_error("no node specified");
 459                 return 1;
 460         }
 461
 462         fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
 463         if (fd < 0) {
 464                 log_error("unable to open '%s'", node);
 465                 return 1;
 466         }
 467
 468         if (disk_identify(udev, fd, identify.byte, &is_packet_device) == 0) {
 469                 /*
 470                  * fix up only the fields from the IDENTIFY data that we are going to
 471                  * use and copy it into the hd_driveid struct for convenience
 472                  */
 473                 disk_identify_fixup_string(identify.byte,  10, 20); /* serial */
 474                 disk_identify_fixup_string(identify.byte,  23,  8); /* fwrev */
 475                 disk_identify_fixup_string(identify.byte,  27, 40); /* model */
 476                 disk_identify_fixup_uint16(identify.byte,  0);      /* configuration */
 477                 disk_identify_fixup_uint16(identify.byte,  75);     /* queue depth */
 478                 disk_identify_fixup_uint16(identify.byte,  76);     /* SATA capabilities */
 479                 disk_identify_fixup_uint16(identify.byte,  82);     /* command set supported */
 480                 disk_identify_fixup_uint16(identify.byte,  83);     /* command set supported */
 481                 disk_identify_fixup_uint16(identify.byte,  84);     /* command set supported */
 482                 disk_identify_fixup_uint16(identify.byte,  85);     /* command set supported */
 483                 disk_identify_fixup_uint16(identify.byte,  86);     /* command set supported */
 484                 disk_identify_fixup_uint16(identify.byte,  87);     /* command set supported */
 485                 disk_identify_fixup_uint16(identify.byte,  89);     /* time required for SECURITY ERASE UNIT */
 486                 disk_identify_fixup_uint16(identify.byte,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 487                 disk_identify_fixup_uint16(identify.byte,  91);     /* current APM values */
 488                 disk_identify_fixup_uint16(identify.byte,  94);     /* current AAM value */
 489                 disk_identify_fixup_uint16(identify.byte, 108);     /* WWN */
 490                 disk_identify_fixup_uint16(identify.byte, 109);     /* WWN */
 491                 disk_identify_fixup_uint16(identify.byte, 110);     /* WWN */
 492                 disk_identify_fixup_uint16(identify.byte, 111);     /* WWN */
 493                 disk_identify_fixup_uint16(identify.byte, 128);     /* device lock function */
 494                 disk_identify_fixup_uint16(identify.byte, 217);     /* nominal media rotation rate */
 495                 memcpy(&id, identify.byte, sizeof id);
 496         } else {
 497                 /* If this fails, then try HDIO_GET_IDENTITY */
 498                 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
 499                         log_debug_errno(errno, "HDIO_GET_IDENTITY failed for '%s': %m", node);
 500                         return 2;
 501                 }
 502         }
 503
 504         memcpy(model, id.model, 40);
 505         model[40] = '\0';
 506         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 507         util_replace_whitespace((char *) id.model, model, 40);
 508         util_replace_chars(model, NULL);
 509         util_replace_whitespace((char *) id.serial_no, serial, 20);
 510         util_replace_chars(serial, NULL);
 511         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 512         util_replace_chars(revision, NULL);
 513
 514         if (export) {
 515                 /* Set this to convey the disk speaks the ATA protocol */
 516                 printf("ID_ATA=1\n");
 517
 518                 if ((id.config >> 8) & 0x80) {
 519                         /* This is an ATAPI device */
 520                         switch ((id.config >> 8) & 0x1f) {
 521                         case 0:
 522                                 printf("ID_TYPE=cd\n");
 523                                 break;
 524                         case 1:
 525                                 printf("ID_TYPE=tape\n");
 526                                 break;
 527                         case 5:
 528                                 printf("ID_TYPE=cd\n");
 529                                 break;
 530                         case 7:
 531                                 printf("ID_TYPE=optical\n");
 532                                 break;
 533                         default:
 534                                 printf("ID_TYPE=generic\n");
 535                                 break;
 536                         }
 537                 } else {
 538                         printf("ID_TYPE=disk\n");
 539                 }
 540                 printf("ID_BUS=ata\n");
 541                 printf("ID_MODEL=%s\n", model);
 542                 printf("ID_MODEL_ENC=%s\n", model_enc);
 543                 printf("ID_REVISION=%s\n", revision);
 544                 if (serial[0] != '\0') {
 545                         printf("ID_SERIAL=%s_%s\n", model, serial);
 546                         printf("ID_SERIAL_SHORT=%s\n", serial);
 547                 } else {
 548                         printf("ID_SERIAL=%s\n", model);
 549                 }
 550
 551                 if (id.command_set_1 & (1<<5)) {
 552                         printf("ID_ATA_WRITE_CACHE=1\n");
 553                         printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 554                 }
 555                 if (id.command_set_1 & (1<<10)) {
 556                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 557                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 558
 559                         /*
 560                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 561                          * so it is easy to check whether the protected area is in use.
 562                          */
 563                 }
 564                 if (id.command_set_1 & (1<<3)) {
 565                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 566                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 567                 }
 568                 if (id.command_set_1 & (1<<1)) {
 569                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 570                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 571                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 572                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 573                                 if (id.dlf & (1<<8))
 574                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 575                                 else
 576                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 577                         }
 578                         if (id.dlf & (1<<5))
 579                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 580                         if (id.dlf & (1<<4))
 581                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 582                         if (id.dlf & (1<<3))
 583                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 584                         if (id.dlf & (1<<2))
 585                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 586                 }
 587                 if (id.command_set_1 & (1<<0)) {
 588                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 589                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 590                 }
 591                 if (id.command_set_2 & (1<<9)) {
 592                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 593                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 594                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 595                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 596                 }
 597                 if (id.command_set_2 & (1<<5)) {
 598                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 599                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 600                 }
 601                 if (id.command_set_2 & (1<<3)) {
 602                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 603                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 604                         if ((id.cfs_enable_2 & (1<<3)))
 605                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 606                 }
 607                 if (id.command_set_2 & (1<<0))
 608                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 609
 610                 /*
 611                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 612                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 613                  * the device does not claim compliance with the Serial ATA specification and words
 614                  * 76 through 79 are not valid and shall be ignored.
 615                  */
 616
 617                 word = identify.wyde[76];
 618                 if (word != 0x0000 && word != 0xffff) {
 619                         printf("ID_ATA_SATA=1\n");
 620                         /*
 621                          * If bit 2 of word 76 is set to one, then the device supports the Gen2
 622                          * signaling rate of 3.0 Gb/s (see SATA 2.6).
 623                          *
 624                          * If bit 1 of word 76 is set to one, then the device supports the Gen1
 625                          * signaling rate of 1.5 Gb/s (see SATA 2.6).
 626                          */
 627                         if (word & (1<<2))
 628                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
 629                         if (word & (1<<1))
 630                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
 631                 }
 632
 633                 /* Word 217 indicates the nominal media rotation rate of the device */
 634                 word = identify.wyde[217];
 635                 if (word == 0x0001)
 636                         printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
 637                 else if (word >= 0x0401 && word <= 0xfffe)
 638                         printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
 639
 640                 /*
 641                  * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
 642                  * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
 643                  * All other values are reserved.
 644                  */
 645                 word = identify.wyde[108];
 646                 if ((word & 0xf000) == 0x5000) {
 647                         uint64_t wwwn;
 648
 649                         wwwn   = identify.wyde[108];
 650                         wwwn <<= 16;
 651                         wwwn  |= identify.wyde[109];
 652                         wwwn <<= 16;
 653                         wwwn  |= identify.wyde[110];
 654                         wwwn <<= 16;
 655                         wwwn  |= identify.wyde[111];
 656                         printf("ID_WWN=0x%1$" PRIx64 "\n"
 657                                "ID_WWN_WITH_EXTENSION=0x%1$" PRIx64 "\n",
 658                                wwwn);
 659                 }
 660
 661                 /* from Linux's include/linux/ata.h */
 662                 if (identify.wyde[0] == 0x848a ||
 663                     identify.wyde[0] == 0x844a ||
 664                     (identify.wyde[83] & 0xc004) == 0x4004)
 665                         printf("ID_ATA_CFA=1\n");
 666         } else {
 667                 if (serial[0] != '\0')
 668                         printf("%s_%s\n", model, serial);
 669                 else
 670                         printf("%s\n", model);
 671         }
 672
 673         return 0;
 674 }