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/types.h>
  38 #include <linux/hdreg.h>
  39 #include <linux/fs.h>
  40 #include <linux/cdrom.h>
  41 #include <linux/bsg.h>
  42 #include <arpa/inet.h>
  43
  44 #include "libudev.h"
  45 #include "libudev-private.h"
  46 #include "udev-util.h"
  47 #include "log.h"
  48
  49 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
  50
  51 static int disk_scsi_inquiry_command(int      fd,
  52                                      void    *buf,
  53                                      size_t   buf_len)
  54 {
  55         uint8_t cdb[6] = {
  56                 /*
  57                  * INQUIRY, see SPC-4 section 6.4
  58                  */
  59                 [0] = 0x12,                /* OPERATION CODE: INQUIRY */
  60                 [3] = (buf_len >> 8),      /* ALLOCATION LENGTH */
  61                 [4] = (buf_len & 0xff),
  62         };
  63         uint8_t sense[32] = {};
  64         struct sg_io_v4 io_v4 = {
  65                 .guard = 'Q',
  66                 .protocol = BSG_PROTOCOL_SCSI,
  67                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
  68                 .request_len = sizeof(cdb),
  69                 .request = (uintptr_t) cdb,
  70                 .max_response_len = sizeof(sense),
  71                 .response = (uintptr_t) sense,
  72                 .din_xfer_len = buf_len,
  73                 .din_xferp = (uintptr_t) buf,
  74                 .timeout = COMMAND_TIMEOUT_MSEC,
  75         };
  76         int ret;
  77
  78         ret = ioctl(fd, SG_IO, &io_v4);
  79         if (ret != 0) {
  80                 /* could be that the driver doesn't do version 4, try version 3 */
  81                 if (errno == EINVAL) {
  82                         struct sg_io_hdr io_hdr = {
  83                                 .interface_id = 'S',
  84                                 .cmdp = (unsigned char*) cdb,
  85                                 .cmd_len = sizeof (cdb),
  86                                 .dxferp = buf,
  87                                 .dxfer_len = buf_len,
  88                                 .sbp = sense,
  89                                 .mx_sb_len = sizeof(sense),
  90                                 .dxfer_direction = SG_DXFER_FROM_DEV,
  91                                 .timeout = COMMAND_TIMEOUT_MSEC,
  92                         };
  93
  94                         ret = ioctl(fd, SG_IO, &io_hdr);
  95                         if (ret != 0)
  96                                 return ret;
  97
  98                         /* even if the ioctl succeeds, we need to check the return value */
  99                         if (!(io_hdr.status == 0 &&
 100                               io_hdr.host_status == 0 &&
 101                               io_hdr.driver_status == 0)) {
 102                                 errno = EIO;
 103                                 return -1;
 104                         }
 105                 } else
 106                         return ret;
 107         }
 108
 109         /* even if the ioctl succeeds, we need to check the return value */
 110         if (!(io_v4.device_status == 0 &&
 111               io_v4.transport_status == 0 &&
 112               io_v4.driver_status == 0)) {
 113                 errno = EIO;
 114                 return -1;
 115         }
 116
 117         return 0;
 118 }
 119
 120 static int disk_identify_command(int          fd,
 121                                  void         *buf,
 122                                  size_t          buf_len)
 123 {
 124         uint8_t cdb[12] = {
 125                 /*
 126                  * ATA Pass-Through 12 byte command, as described in
 127                  *
 128                  *  T10 04-262r8 ATA Command Pass-Through
 129                  *
 130                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 131                  */
 132                 [0] = 0xa1,     /* OPERATION CODE: 12 byte pass through */
 133                 [1] = 4 << 1,   /* PROTOCOL: PIO Data-in */
 134                 [2] = 0x2e,     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 135                 [3] = 0,        /* FEATURES */
 136                 [4] = 1,        /* SECTORS */
 137                 [5] = 0,        /* LBA LOW */
 138                 [6] = 0,        /* LBA MID */
 139                 [7] = 0,        /* LBA HIGH */
 140                 [8] = 0 & 0x4F, /* SELECT */
 141                 [9] = 0xEC,     /* Command: ATA IDENTIFY DEVICE */
 142         };
 143         uint8_t sense[32] = {};
 144         uint8_t *desc = sense + 8;
 145         struct sg_io_v4 io_v4 = {
 146                 .guard = 'Q',
 147                 .protocol = BSG_PROTOCOL_SCSI,
 148                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 149                 .request_len = sizeof(cdb),
 150                 .request = (uintptr_t) cdb,
 151                 .max_response_len = sizeof(sense),
 152                 .response = (uintptr_t) sense,
 153                 .din_xfer_len = buf_len,
 154                 .din_xferp = (uintptr_t) buf,
 155                 .timeout = COMMAND_TIMEOUT_MSEC,
 156         };
 157         int ret;
 158
 159         ret = ioctl(fd, SG_IO, &io_v4);
 160         if (ret != 0) {
 161                 /* could be that the driver doesn't do version 4, try version 3 */
 162                 if (errno == EINVAL) {
 163                         struct sg_io_hdr io_hdr = {
 164                                 .interface_id = 'S',
 165                                 .cmdp = (unsigned char*) cdb,
 166                                 .cmd_len = sizeof (cdb),
 167                                 .dxferp = buf,
 168                                 .dxfer_len = buf_len,
 169                                 .sbp = sense,
 170                                 .mx_sb_len = sizeof (sense),
 171                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 172                                 .timeout = COMMAND_TIMEOUT_MSEC,
 173                         };
 174
 175                         ret = ioctl(fd, SG_IO, &io_hdr);
 176                         if (ret != 0)
 177                                 return ret;
 178                 } else
 179                         return ret;
 180         }
 181
 182         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 183                 errno = EIO;
 184                 return -1;
 185         }
 186
 187         return 0;
 188 }
 189
 190 static int disk_identify_packet_device_command(int          fd,
 191                                                void         *buf,
 192                                                size_t          buf_len)
 193 {
 194         uint8_t cdb[16] = {
 195                 /*
 196                  * ATA Pass-Through 16 byte command, as described in
 197                  *
 198                  *  T10 04-262r8 ATA Command Pass-Through
 199                  *
 200                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 201                  */
 202                 [0] = 0x85,   /* OPERATION CODE: 16 byte pass through */
 203                 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
 204                 [2] = 0x2e,   /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 205                 [3] = 0,      /* FEATURES */
 206                 [4] = 0,      /* FEATURES */
 207                 [5] = 0,      /* SECTORS */
 208                 [6] = 1,      /* SECTORS */
 209                 [7] = 0,      /* LBA LOW */
 210                 [8] = 0,      /* LBA LOW */
 211                 [9] = 0,      /* LBA MID */
 212                 [10] = 0,     /* LBA MID */
 213                 [11] = 0,     /* LBA HIGH */
 214                 [12] = 0,     /* LBA HIGH */
 215                 [13] = 0,     /* DEVICE */
 216                 [14] = 0xA1,  /* Command: ATA IDENTIFY PACKET DEVICE */
 217                 [15] = 0,     /* CONTROL */
 218         };
 219         uint8_t sense[32] = {};
 220         uint8_t *desc = sense + 8;
 221         struct sg_io_v4 io_v4 = {
 222                 .guard = 'Q',
 223                 .protocol = BSG_PROTOCOL_SCSI,
 224                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 225                 .request_len = sizeof (cdb),
 226                 .request = (uintptr_t) cdb,
 227                 .max_response_len = sizeof (sense),
 228                 .response = (uintptr_t) sense,
 229                 .din_xfer_len = buf_len,
 230                 .din_xferp = (uintptr_t) buf,
 231                 .timeout = COMMAND_TIMEOUT_MSEC,
 232         };
 233         int ret;
 234
 235         ret = ioctl(fd, SG_IO, &io_v4);
 236         if (ret != 0) {
 237                 /* could be that the driver doesn't do version 4, try version 3 */
 238                 if (errno == EINVAL) {
 239                         struct sg_io_hdr io_hdr = {
 240                                 .interface_id = 'S',
 241                                 .cmdp = (unsigned char*) cdb,
 242                                 .cmd_len = sizeof (cdb),
 243                                 .dxferp = buf,
 244                                 .dxfer_len = buf_len,
 245                                 .sbp = sense,
 246                                 .mx_sb_len = sizeof (sense),
 247                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 248                                 .timeout = COMMAND_TIMEOUT_MSEC,
 249                         };
 250
 251                         ret = ioctl(fd, SG_IO, &io_hdr);
 252                         if (ret != 0)
 253                                 return ret;
 254                 } else
 255                         return ret;
 256         }
 257
 258         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 259                 errno = EIO;
 260                 return -1;
 261         }
 262
 263         return 0;
 264 }
 265
 266 /**
 267  * disk_identify_get_string:
 268  * @identify: A block of IDENTIFY data
 269  * @offset_words: Offset of the string to get, in words.
 270  * @dest: Destination buffer for the string.
 271  * @dest_len: Length of destination buffer, in bytes.
 272  *
 273  * Copies the ATA string from @identify located at @offset_words into @dest.
 274  */
 275 static void disk_identify_get_string(uint8_t identify[512],
 276                                      unsigned int offset_words,
 277                                      char *dest,
 278                                      size_t dest_len)
 279 {
 280         unsigned int c1;
 281         unsigned int c2;
 282
 283         while (dest_len > 0) {
 284                 c1 = identify[offset_words * 2 + 1];
 285                 c2 = identify[offset_words * 2];
 286                 *dest = c1;
 287                 dest++;
 288                 *dest = c2;
 289                 dest++;
 290                 offset_words++;
 291                 dest_len -= 2;
 292         }
 293 }
 294
 295 static void disk_identify_fixup_string(uint8_t identify[512],
 296                                        unsigned int offset_words,
 297                                        size_t len)
 298 {
 299         disk_identify_get_string(identify, offset_words,
 300                                  (char *) identify + offset_words * 2, len);
 301 }
 302
 303 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
 304 {
 305         uint16_t *p;
 306
 307         p = (uint16_t *) identify;
 308         p[offset_words] = le16toh (p[offset_words]);
 309 }
 310
 311 /**
 312  * disk_identify:
 313  * @udev: The libudev context.
 314  * @fd: File descriptor for the block device.
 315  * @out_identify: Return location for IDENTIFY data.
 316  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 317  *
 318  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 319  * device represented by @fd. If successful, then the result will be
 320  * copied into @out_identify and @out_is_packet_device.
 321  *
 322  * This routine is based on code from libatasmart, Copyright 2008
 323  * Lennart Poettering, LGPL v2.1.
 324  *
 325  * Returns: 0 if the data was successfully obtained, otherwise
 326  * non-zero with errno set.
 327  */
 328 static int disk_identify(struct udev *udev,
 329                          int fd,
 330                          uint8_t out_identify[512],
 331                          int *out_is_packet_device)
 332 {
 333         int ret;
 334         uint8_t inquiry_buf[36];
 335         int peripheral_device_type;
 336         int all_nul_bytes;
 337         int n;
 338         int is_packet_device = 0;
 339
 340         /* init results */
 341         memzero(out_identify, 512);
 342
 343         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 344          * we could accidentally blank media. This is because MMC's BLANK
 345          * command has the same op-code (0x61).
 346          *
 347          * To prevent this from happening we bail out if the device
 348          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 349          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 350          * command first... libata is handling this via its SCSI
 351          * emulation layer.
 352          *
 353          * This also ensures that we're actually dealing with a device
 354          * that understands SCSI commands.
 355          *
 356          * (Yes, it is a bit perverse that we're tunneling the ATA
 357          * command through SCSI and relying on the ATA driver
 358          * emulating SCSI well-enough...)
 359          *
 360          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 361          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 362          * for the original bug-report.)
 363          */
 364         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 365         if (ret != 0)
 366                 goto out;
 367
 368         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 369         peripheral_device_type = inquiry_buf[0] & 0x1f;
 370         if (peripheral_device_type == 0x05)
 371           {
 372             is_packet_device = 1;
 373             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 374             goto check_nul_bytes;
 375           }
 376         if (peripheral_device_type != 0x00) {
 377                 ret = -1;
 378                 errno = EIO;
 379                 goto out;
 380         }
 381
 382         /* OK, now issue the IDENTIFY DEVICE command */
 383         ret = disk_identify_command(fd, out_identify, 512);
 384         if (ret != 0)
 385                 goto out;
 386
 387  check_nul_bytes:
 388          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 389         all_nul_bytes = 1;
 390         for (n = 0; n < 512; n++) {
 391                 if (out_identify[n] != '\0') {
 392                         all_nul_bytes = 0;
 393                         break;
 394                 }
 395         }
 396
 397         if (all_nul_bytes) {
 398                 ret = -1;
 399                 errno = EIO;
 400                 goto out;
 401         }
 402
 403 out:
 404         if (out_is_packet_device != NULL)
 405                 *out_is_packet_device = is_packet_device;
 406         return ret;
 407 }
 408
 409 int main(int argc, char *argv[])
 410 {
 411         _cleanup_udev_unref_ struct udev *udev = NULL;
 412         struct hd_driveid id;
 413         union {
 414                 uint8_t  byte[512];
 415                 uint16_t wyde[256];
 416                 uint64_t octa[64];
 417         } identify;
 418         uint16_t *identify_words;
 419         char model[41];
 420         char model_enc[256];
 421         char serial[21];
 422         char revision[9];
 423         const char *node = NULL;
 424         int export = 0;
 425         _cleanup_close_ int fd = -1;
 426         uint16_t word;
 427         int is_packet_device = 0;
 428         static const struct option options[] = {
 429                 { "export", no_argument, NULL, 'x' },
 430                 { "help", no_argument, NULL, 'h' },
 431                 {}
 432         };
 433
 434         log_parse_environment();
 435         log_open();
 436
 437         udev = udev_new();
 438         if (udev == NULL)
 439                 return 0;
 440
 441         while (1) {
 442                 int option;
 443
 444                 option = getopt_long(argc, argv, "xh", options, NULL);
 445                 if (option == -1)
 446                         break;
 447
 448                 switch (option) {
 449                 case 'x':
 450                         export = 1;
 451                         break;
 452                 case 'h':
 453                         printf("Usage: ata_id [--export] [--help] <device>\n"
 454                                "  --export    print values as environment keys\n"
 455                                "  --help      print this help text\n\n");
 456                         return 0;
 457                 }
 458         }
 459
 460         node = argv[optind];
 461         if (node == NULL) {
 462                 log_error("no node specified");
 463                 return 1;
 464         }
 465
 466         fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
 467         if (fd < 0) {
 468                 log_error("unable to open '%s'", node);
 469                 return 1;
 470         }
 471
 472         if (disk_identify(udev, fd, identify.byte, &is_packet_device) == 0) {
 473                 /*
 474                  * fix up only the fields from the IDENTIFY data that we are going to
 475                  * use and copy it into the hd_driveid struct for convenience
 476                  */
 477                 disk_identify_fixup_string(identify.byte,  10, 20); /* serial */
 478                 disk_identify_fixup_string(identify.byte,  23,  8); /* fwrev */
 479                 disk_identify_fixup_string(identify.byte,  27, 40); /* model */
 480                 disk_identify_fixup_uint16(identify.byte,  0);      /* configuration */
 481                 disk_identify_fixup_uint16(identify.byte,  75);     /* queue depth */
 482                 disk_identify_fixup_uint16(identify.byte,  75);     /* SATA capabilities */
 483                 disk_identify_fixup_uint16(identify.byte,  82);     /* command set supported */
 484                 disk_identify_fixup_uint16(identify.byte,  83);     /* command set supported */
 485                 disk_identify_fixup_uint16(identify.byte,  84);     /* command set supported */
 486                 disk_identify_fixup_uint16(identify.byte,  85);     /* command set supported */
 487                 disk_identify_fixup_uint16(identify.byte,  86);     /* command set supported */
 488                 disk_identify_fixup_uint16(identify.byte,  87);     /* command set supported */
 489                 disk_identify_fixup_uint16(identify.byte,  89);     /* time required for SECURITY ERASE UNIT */
 490                 disk_identify_fixup_uint16(identify.byte,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 491                 disk_identify_fixup_uint16(identify.byte,  91);     /* current APM values */
 492                 disk_identify_fixup_uint16(identify.byte,  94);     /* current AAM value */
 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         identify_words = &identify.wyde;
 504
 505         memcpy (model, id.model, 40);
 506         model[40] = '\0';
 507         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 508         util_replace_whitespace((char *) id.model, model, 40);
 509         util_replace_chars(model, NULL);
 510         util_replace_whitespace((char *) id.serial_no, serial, 20);
 511         util_replace_chars(serial, NULL);
 512         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 513         util_replace_chars(revision, NULL);
 514
 515         if (export) {
 516                 /* Set this to convey the disk speaks the ATA protocol */
 517                 printf("ID_ATA=1\n");
 518
 519                 if ((id.config >> 8) & 0x80) {
 520                         /* This is an ATAPI device */
 521                         switch ((id.config >> 8) & 0x1f) {
 522                         case 0:
 523                                 printf("ID_TYPE=cd\n");
 524                                 break;
 525                         case 1:
 526                                 printf("ID_TYPE=tape\n");
 527                                 break;
 528                         case 5:
 529                                 printf("ID_TYPE=cd\n");
 530                                 break;
 531                         case 7:
 532                                 printf("ID_TYPE=optical\n");
 533                                 break;
 534                         default:
 535                                 printf("ID_TYPE=generic\n");
 536                                 break;
 537                         }
 538                 } else {
 539                         printf("ID_TYPE=disk\n");
 540                 }
 541                 printf("ID_BUS=ata\n");
 542                 printf("ID_MODEL=%s\n", model);
 543                 printf("ID_MODEL_ENC=%s\n", model_enc);
 544                 printf("ID_REVISION=%s\n", revision);
 545                 if (serial[0] != '\0') {
 546                         printf("ID_SERIAL=%s_%s\n", model, serial);
 547                         printf("ID_SERIAL_SHORT=%s\n", serial);
 548                 } else {
 549                         printf("ID_SERIAL=%s\n", model);
 550                 }
 551
 552                 if (id.command_set_1 & (1<<5)) {
 553                         printf("ID_ATA_WRITE_CACHE=1\n");
 554                         printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 555                 }
 556                 if (id.command_set_1 & (1<<10)) {
 557                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 558                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 559
 560                         /*
 561                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 562                          * so it is easy to check whether the protected area is in use.
 563                          */
 564                 }
 565                 if (id.command_set_1 & (1<<3)) {
 566                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 567                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 568                 }
 569                 if (id.command_set_1 & (1<<1)) {
 570                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 571                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 572                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 573                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 574                                 if (id.dlf & (1<<8))
 575                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 576                                 else
 577                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 578                         }
 579                         if (id.dlf & (1<<5))
 580                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 581                         if (id.dlf & (1<<4))
 582                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 583                         if (id.dlf & (1<<3))
 584                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 585                         if (id.dlf & (1<<2))
 586                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 587                 }
 588                 if (id.command_set_1 & (1<<0)) {
 589                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 590                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 591                 }
 592                 if (id.command_set_2 & (1<<9)) {
 593                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 594                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 595                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 596                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 597                 }
 598                 if (id.command_set_2 & (1<<5)) {
 599                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 600                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 601                 }
 602                 if (id.command_set_2 & (1<<3)) {
 603                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 604                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 605                         if ((id.cfs_enable_2 & (1<<3)))
 606                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 607                 }
 608                 if (id.command_set_2 & (1<<0))
 609                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 610
 611                 /*
 612                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 613                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 614                  * the device does not claim compliance with the Serial ATA specification and words
 615                  * 76 through 79 are not valid and shall be ignored.
 616                  */
 617                 word = identify_words[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_words[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_words[108];
 646                 if ((word & 0xf000) == 0x5000)
 647                         printf("ID_WWN=0x%1$"PRIu64"x\n"
 648                                "ID_WWN_WITH_EXTENSION=0x%1$"PRIu64"x\n",
 649                                identify.octa[108/4]);
 650
 651                 /* from Linux's include/linux/ata.h */
 652                 if (identify_words[0] == 0x848a ||
 653                     identify_words[0] == 0x844a ||
 654                     (identify_words[83] & 0xc004) == 0x4004)
 655                         printf("ID_ATA_CFA=1\n");
 656         } else {
 657                 if (serial[0] != '\0')
 658                         printf("%s_%s\n", model, serial);
 659                 else
 660                         printf("%s\n", model);
 661         }
 662
 663         return 0;
 664 }