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 "log.h"
  47
  48 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
  49
  50 static int disk_scsi_inquiry_command(int      fd,
  51                                      void    *buf,
  52                                      size_t   buf_len)
  53 {
  54         uint8_t cdb[6] = {
  55                 /*
  56                  * INQUIRY, see SPC-4 section 6.4
  57                  */
  58                 [0] = 0x12,                /* OPERATION CODE: INQUIRY */
  59                 [3] = (buf_len >> 8),      /* ALLOCATION LENGTH */
  60                 [4] = (buf_len & 0xff),
  61         };
  62         uint8_t sense[32] = {};
  63         struct sg_io_v4 io_v4 = {
  64                 .guard = 'Q',
  65                 .protocol = BSG_PROTOCOL_SCSI,
  66                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
  67                 .request_len = sizeof(cdb),
  68                 .request = (uintptr_t) cdb,
  69                 .max_response_len = sizeof(sense),
  70                 .response = (uintptr_t) sense,
  71                 .din_xfer_len = buf_len,
  72                 .din_xferp = (uintptr_t) buf,
  73                 .timeout = COMMAND_TIMEOUT_MSEC,
  74         };
  75         int ret;
  76
  77         ret = ioctl(fd, SG_IO, &io_v4);
  78         if (ret != 0) {
  79                 /* could be that the driver doesn't do version 4, try version 3 */
  80                 if (errno == EINVAL) {
  81                         struct sg_io_hdr io_hdr = {
  82                                 .interface_id = 'S',
  83                                 .cmdp = (unsigned char*) cdb,
  84                                 .cmd_len = sizeof (cdb),
  85                                 .dxferp = buf,
  86                                 .dxfer_len = buf_len,
  87                                 .sbp = sense,
  88                                 .mx_sb_len = sizeof(sense),
  89                                 .dxfer_direction = SG_DXFER_FROM_DEV,
  90                                 .timeout = COMMAND_TIMEOUT_MSEC,
  91                         };
  92
  93                         ret = ioctl(fd, SG_IO, &io_hdr);
  94                         if (ret != 0)
  95                                 return ret;
  96
  97                         /* even if the ioctl succeeds, we need to check the return value */
  98                         if (!(io_hdr.status == 0 &&
  99                               io_hdr.host_status == 0 &&
 100                               io_hdr.driver_status == 0)) {
 101                                 errno = EIO;
 102                                 return -1;
 103                         }
 104                 } else
 105                         return ret;
 106         }
 107
 108         /* even if the ioctl succeeds, we need to check the return value */
 109         if (!(io_v4.device_status == 0 &&
 110               io_v4.transport_status == 0 &&
 111               io_v4.driver_status == 0)) {
 112                 errno = EIO;
 113                 return -1;
 114         }
 115
 116         return 0;
 117 }
 118
 119 static int disk_identify_command(int          fd,
 120                                  void         *buf,
 121                                  size_t          buf_len)
 122 {
 123         uint8_t cdb[12] = {
 124                 /*
 125                  * ATA Pass-Through 12 byte command, as described in
 126                  *
 127                  *  T10 04-262r8 ATA Command Pass-Through
 128                  *
 129                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 130                  */
 131                 [0] = 0xa1,     /* OPERATION CODE: 12 byte pass through */
 132                 [1] = 4 << 1,   /* PROTOCOL: PIO Data-in */
 133                 [2] = 0x2e,     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 134                 [3] = 0,        /* FEATURES */
 135                 [4] = 1,        /* SECTORS */
 136                 [5] = 0,        /* LBA LOW */
 137                 [6] = 0,        /* LBA MID */
 138                 [7] = 0,        /* LBA HIGH */
 139                 [8] = 0 & 0x4F, /* SELECT */
 140                 [9] = 0xEC,     /* Command: ATA IDENTIFY DEVICE */
 141         };
 142         uint8_t sense[32] = {};
 143         uint8_t *desc = sense + 8;
 144         struct sg_io_v4 io_v4 = {
 145                 .guard = 'Q',
 146                 .protocol = BSG_PROTOCOL_SCSI,
 147                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 148                 .request_len = sizeof(cdb),
 149                 .request = (uintptr_t) cdb,
 150                 .max_response_len = sizeof(sense),
 151                 .response = (uintptr_t) sense,
 152                 .din_xfer_len = buf_len,
 153                 .din_xferp = (uintptr_t) buf,
 154                 .timeout = COMMAND_TIMEOUT_MSEC,
 155         };
 156         int ret;
 157
 158         ret = ioctl(fd, SG_IO, &io_v4);
 159         if (ret != 0) {
 160                 /* could be that the driver doesn't do version 4, try version 3 */
 161                 if (errno == EINVAL) {
 162                         struct sg_io_hdr io_hdr = {
 163                                 .interface_id = 'S',
 164                                 .cmdp = (unsigned char*) cdb,
 165                                 .cmd_len = sizeof (cdb),
 166                                 .dxferp = buf,
 167                                 .dxfer_len = buf_len,
 168                                 .sbp = sense,
 169                                 .mx_sb_len = sizeof (sense),
 170                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 171                                 .timeout = COMMAND_TIMEOUT_MSEC,
 172                         };
 173
 174                         ret = ioctl(fd, SG_IO, &io_hdr);
 175                         if (ret != 0)
 176                                 return ret;
 177                 } else
 178                         return ret;
 179         }
 180
 181         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 182                 errno = EIO;
 183                 return -1;
 184         }
 185
 186         return 0;
 187 }
 188
 189 static int disk_identify_packet_device_command(int          fd,
 190                                                void         *buf,
 191                                                size_t          buf_len)
 192 {
 193         uint8_t cdb[16] = {
 194                 /*
 195                  * ATA Pass-Through 16 byte command, as described in
 196                  *
 197                  *  T10 04-262r8 ATA Command Pass-Through
 198                  *
 199                  * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 200                  */
 201                 [0] = 0x85,   /* OPERATION CODE: 16 byte pass through */
 202                 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
 203                 [2] = 0x2e,   /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 204                 [3] = 0,      /* FEATURES */
 205                 [4] = 0,      /* FEATURES */
 206                 [5] = 0,      /* SECTORS */
 207                 [6] = 1,      /* SECTORS */
 208                 [7] = 0,      /* LBA LOW */
 209                 [8] = 0,      /* LBA LOW */
 210                 [9] = 0,      /* LBA MID */
 211                 [10] = 0,     /* LBA MID */
 212                 [11] = 0,     /* LBA HIGH */
 213                 [12] = 0,     /* LBA HIGH */
 214                 [13] = 0,     /* DEVICE */
 215                 [14] = 0xA1,  /* Command: ATA IDENTIFY PACKET DEVICE */
 216                 [15] = 0,     /* CONTROL */
 217         };
 218         uint8_t sense[32] = {};
 219         uint8_t *desc = sense + 8;
 220         struct sg_io_v4 io_v4 = {
 221                 .guard = 'Q',
 222                 .protocol = BSG_PROTOCOL_SCSI,
 223                 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
 224                 .request_len = sizeof (cdb),
 225                 .request = (uintptr_t) cdb,
 226                 .max_response_len = sizeof (sense),
 227                 .response = (uintptr_t) sense,
 228                 .din_xfer_len = buf_len,
 229                 .din_xferp = (uintptr_t) buf,
 230                 .timeout = COMMAND_TIMEOUT_MSEC,
 231         };
 232         int ret;
 233
 234         ret = ioctl(fd, SG_IO, &io_v4);
 235         if (ret != 0) {
 236                 /* could be that the driver doesn't do version 4, try version 3 */
 237                 if (errno == EINVAL) {
 238                         struct sg_io_hdr io_hdr = {
 239                                 .interface_id = 'S',
 240                                 .cmdp = (unsigned char*) cdb,
 241                                 .cmd_len = sizeof (cdb),
 242                                 .dxferp = buf,
 243                                 .dxfer_len = buf_len,
 244                                 .sbp = sense,
 245                                 .mx_sb_len = sizeof (sense),
 246                                 .dxfer_direction = SG_DXFER_FROM_DEV,
 247                                 .timeout = COMMAND_TIMEOUT_MSEC,
 248                         };
 249
 250                         ret = ioctl(fd, SG_IO, &io_hdr);
 251                         if (ret != 0)
 252                                 return ret;
 253                 } else
 254                         return ret;
 255         }
 256
 257         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 258                 errno = EIO;
 259                 return -1;
 260         }
 261
 262         return 0;
 263 }
 264
 265 /**
 266  * disk_identify_get_string:
 267  * @identify: A block of IDENTIFY data
 268  * @offset_words: Offset of the string to get, in words.
 269  * @dest: Destination buffer for the string.
 270  * @dest_len: Length of destination buffer, in bytes.
 271  *
 272  * Copies the ATA string from @identify located at @offset_words into @dest.
 273  */
 274 static void disk_identify_get_string(uint8_t identify[512],
 275                                      unsigned int offset_words,
 276                                      char *dest,
 277                                      size_t dest_len)
 278 {
 279         unsigned int c1;
 280         unsigned int c2;
 281
 282         while (dest_len > 0) {
 283                 c1 = identify[offset_words * 2 + 1];
 284                 c2 = identify[offset_words * 2];
 285                 *dest = c1;
 286                 dest++;
 287                 *dest = c2;
 288                 dest++;
 289                 offset_words++;
 290                 dest_len -= 2;
 291         }
 292 }
 293
 294 static void disk_identify_fixup_string(uint8_t identify[512],
 295                                        unsigned int offset_words,
 296                                        size_t len)
 297 {
 298         disk_identify_get_string(identify, offset_words,
 299                                  (char *) identify + offset_words * 2, len);
 300 }
 301
 302 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
 303 {
 304         uint16_t *p;
 305
 306         p = (uint16_t *) identify;
 307         p[offset_words] = le16toh (p[offset_words]);
 308 }
 309
 310 /**
 311  * disk_identify:
 312  * @udev: The libudev context.
 313  * @fd: File descriptor for the block device.
 314  * @out_identify: Return location for IDENTIFY data.
 315  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 316  *
 317  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 318  * device represented by @fd. If successful, then the result will be
 319  * copied into @out_identify and @out_is_packet_device.
 320  *
 321  * This routine is based on code from libatasmart, Copyright 2008
 322  * Lennart Poettering, LGPL v2.1.
 323  *
 324  * Returns: 0 if the data was successfully obtained, otherwise
 325  * non-zero with errno set.
 326  */
 327 static int disk_identify(struct udev *udev,
 328                          int fd,
 329                          uint8_t out_identify[512],
 330                          int *out_is_packet_device)
 331 {
 332         int ret;
 333         uint8_t inquiry_buf[36];
 334         int peripheral_device_type;
 335         int all_nul_bytes;
 336         int n;
 337         int is_packet_device = 0;
 338
 339         /* init results */
 340         memzero(out_identify, 512);
 341
 342         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 343          * we could accidentally blank media. This is because MMC's BLANK
 344          * command has the same op-code (0x61).
 345          *
 346          * To prevent this from happening we bail out if the device
 347          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 348          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 349          * command first... libata is handling this via its SCSI
 350          * emulation layer.
 351          *
 352          * This also ensures that we're actually dealing with a device
 353          * that understands SCSI commands.
 354          *
 355          * (Yes, it is a bit perverse that we're tunneling the ATA
 356          * command through SCSI and relying on the ATA driver
 357          * emulating SCSI well-enough...)
 358          *
 359          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 360          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 361          * for the original bug-report.)
 362          */
 363         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 364         if (ret != 0)
 365                 goto out;
 366
 367         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 368         peripheral_device_type = inquiry_buf[0] & 0x1f;
 369         if (peripheral_device_type == 0x05)
 370           {
 371             is_packet_device = 1;
 372             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 373             goto check_nul_bytes;
 374           }
 375         if (peripheral_device_type != 0x00) {
 376                 ret = -1;
 377                 errno = EIO;
 378                 goto out;
 379         }
 380
 381         /* OK, now issue the IDENTIFY DEVICE command */
 382         ret = disk_identify_command(fd, out_identify, 512);
 383         if (ret != 0)
 384                 goto out;
 385
 386  check_nul_bytes:
 387          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 388         all_nul_bytes = 1;
 389         for (n = 0; n < 512; n++) {
 390                 if (out_identify[n] != '\0') {
 391                         all_nul_bytes = 0;
 392                         break;
 393                 }
 394         }
 395
 396         if (all_nul_bytes) {
 397                 ret = -1;
 398                 errno = EIO;
 399                 goto out;
 400         }
 401
 402 out:
 403         if (out_is_packet_device != NULL)
 404                 *out_is_packet_device = is_packet_device;
 405         return ret;
 406 }
 407
 408 static void log_fn(struct udev *udev, int priority,
 409                    const char *file, int line, const char *fn,
 410                    const char *format, va_list args)
 411 {
 412         vsyslog(priority, format, args);
 413 }
 414
 415 int main(int argc, char *argv[])
 416 {
 417         struct udev *udev;
 418         struct hd_driveid id;
 419         uint8_t identify[512];
 420         uint16_t *identify_words;
 421         char model[41];
 422         char model_enc[256];
 423         char serial[21];
 424         char revision[9];
 425         const char *node = NULL;
 426         int export = 0;
 427         int fd;
 428         uint16_t word;
 429         int rc = 0;
 430         int is_packet_device = 0;
 431         static const struct option options[] = {
 432                 { "export", no_argument, NULL, 'x' },
 433                 { "help", no_argument, NULL, 'h' },
 434                 {}
 435         };
 436
 437         udev = udev_new();
 438         if (udev == NULL)
 439                 goto exit;
 440
 441         log_open();
 442         udev_set_log_fn(udev, log_fn);
 443
 444         while (1) {
 445                 int option;
 446
 447                 option = getopt_long(argc, argv, "xh", options, NULL);
 448                 if (option == -1)
 449                         break;
 450
 451                 switch (option) {
 452                 case 'x':
 453                         export = 1;
 454                         break;
 455                 case 'h':
 456                         printf("Usage: ata_id [--export] [--help] <device>\n"
 457                                "  --export    print values as environment keys\n"
 458                                "  --help      print this help text\n\n");
 459                         goto exit;
 460                 }
 461         }
 462
 463         node = argv[optind];
 464         if (node == NULL) {
 465                 log_error("no node specified\n");
 466                 rc = 1;
 467                 goto exit;
 468         }
 469
 470         fd = open(node, O_RDONLY|O_NONBLOCK);
 471         if (fd < 0) {
 472                 log_error("unable to open '%s'\n", node);
 473                 rc = 1;
 474                 goto exit;
 475         }
 476
 477         if (disk_identify(udev, fd, identify, &is_packet_device) == 0) {
 478                 /*
 479                  * fix up only the fields from the IDENTIFY data that we are going to
 480                  * use and copy it into the hd_driveid struct for convenience
 481                  */
 482                 disk_identify_fixup_string(identify,  10, 20); /* serial */
 483                 disk_identify_fixup_string(identify,  23,  8); /* fwrev */
 484                 disk_identify_fixup_string(identify,  27, 40); /* model */
 485                 disk_identify_fixup_uint16(identify,  0);      /* configuration */
 486                 disk_identify_fixup_uint16(identify,  75);     /* queue depth */
 487                 disk_identify_fixup_uint16(identify,  75);     /* SATA capabilities */
 488                 disk_identify_fixup_uint16(identify,  82);     /* command set supported */
 489                 disk_identify_fixup_uint16(identify,  83);     /* command set supported */
 490                 disk_identify_fixup_uint16(identify,  84);     /* command set supported */
 491                 disk_identify_fixup_uint16(identify,  85);     /* command set supported */
 492                 disk_identify_fixup_uint16(identify,  86);     /* command set supported */
 493                 disk_identify_fixup_uint16(identify,  87);     /* command set supported */
 494                 disk_identify_fixup_uint16(identify,  89);     /* time required for SECURITY ERASE UNIT */
 495                 disk_identify_fixup_uint16(identify,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 496                 disk_identify_fixup_uint16(identify,  91);     /* current APM values */
 497                 disk_identify_fixup_uint16(identify,  94);     /* current AAM value */
 498                 disk_identify_fixup_uint16(identify, 128);     /* device lock function */
 499                 disk_identify_fixup_uint16(identify, 217);     /* nominal media rotation rate */
 500                 memcpy(&id, identify, sizeof id);
 501         } else {
 502                 /* If this fails, then try HDIO_GET_IDENTITY */
 503                 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
 504                         log_info("HDIO_GET_IDENTITY failed for '%s': %m\n", node);
 505                         rc = 2;
 506                         goto close;
 507                 }
 508         }
 509         identify_words = (uint16_t *) identify;
 510
 511         memcpy (model, id.model, 40);
 512         model[40] = '\0';
 513         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 514         util_replace_whitespace((char *) id.model, model, 40);
 515         util_replace_chars(model, NULL);
 516         util_replace_whitespace((char *) id.serial_no, serial, 20);
 517         util_replace_chars(serial, NULL);
 518         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 519         util_replace_chars(revision, NULL);
 520
 521         if (export) {
 522                 /* Set this to convey the disk speaks the ATA protocol */
 523                 printf("ID_ATA=1\n");
 524
 525                 if ((id.config >> 8) & 0x80) {
 526                         /* This is an ATAPI device */
 527                         switch ((id.config >> 8) & 0x1f) {
 528                         case 0:
 529                                 printf("ID_TYPE=cd\n");
 530                                 break;
 531                         case 1:
 532                                 printf("ID_TYPE=tape\n");
 533                                 break;
 534                         case 5:
 535                                 printf("ID_TYPE=cd\n");
 536                                 break;
 537                         case 7:
 538                                 printf("ID_TYPE=optical\n");
 539                                 break;
 540                         default:
 541                                 printf("ID_TYPE=generic\n");
 542                                 break;
 543                         }
 544                 } else {
 545                         printf("ID_TYPE=disk\n");
 546                 }
 547                 printf("ID_BUS=ata\n");
 548                 printf("ID_MODEL=%s\n", model);
 549                 printf("ID_MODEL_ENC=%s\n", model_enc);
 550                 printf("ID_REVISION=%s\n", revision);
 551                 if (serial[0] != '\0') {
 552                         printf("ID_SERIAL=%s_%s\n", model, serial);
 553                         printf("ID_SERIAL_SHORT=%s\n", serial);
 554                 } else {
 555                         printf("ID_SERIAL=%s\n", model);
 556                 }
 557
 558                 if (id.command_set_1 & (1<<5)) {
 559                         printf ("ID_ATA_WRITE_CACHE=1\n");
 560                         printf ("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 561                 }
 562                 if (id.command_set_1 & (1<<10)) {
 563                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 564                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 565
 566                         /*
 567                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 568                          * so it is easy to check whether the protected area is in use.
 569                          */
 570                 }
 571                 if (id.command_set_1 & (1<<3)) {
 572                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 573                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 574                 }
 575                 if (id.command_set_1 & (1<<1)) {
 576                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 577                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 578                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 579                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 580                                 if (id.dlf & (1<<8))
 581                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 582                                 else
 583                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 584                         }
 585                         if (id.dlf & (1<<5))
 586                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 587                         if (id.dlf & (1<<4))
 588                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 589                         if (id.dlf & (1<<3))
 590                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 591                         if (id.dlf & (1<<2))
 592                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 593                 }
 594                 if (id.command_set_1 & (1<<0)) {
 595                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 596                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 597                 }
 598                 if (id.command_set_2 & (1<<9)) {
 599                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 600                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 601                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 602                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 603                 }
 604                 if (id.command_set_2 & (1<<5)) {
 605                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 606                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 607                 }
 608                 if (id.command_set_2 & (1<<3)) {
 609                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 610                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 611                         if ((id.cfs_enable_2 & (1<<3)))
 612                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 613                 }
 614                 if (id.command_set_2 & (1<<0))
 615                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 616
 617                 /*
 618                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 619                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 620                  * the device does not claim compliance with the Serial ATA specification and words
 621                  * 76 through 79 are not valid and shall be ignored.
 622                  */
 623                 word = *((uint16_t *) identify + 76);
 624                 if (word != 0x0000 && word != 0xffff) {
 625                         printf("ID_ATA_SATA=1\n");
 626                         /*
 627                          * If bit 2 of word 76 is set to one, then the device supports the Gen2
 628                          * signaling rate of 3.0 Gb/s (see SATA 2.6).
 629                          *
 630                          * If bit 1 of word 76 is set to one, then the device supports the Gen1
 631                          * signaling rate of 1.5 Gb/s (see SATA 2.6).
 632                          */
 633                         if (word & (1<<2))
 634                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
 635                         if (word & (1<<1))
 636                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
 637                 }
 638
 639                 /* Word 217 indicates the nominal media rotation rate of the device */
 640                 word = *((uint16_t *) identify + 217);
 641                 if (word != 0x0000) {
 642                         if (word == 0x0001) {
 643                                 printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
 644                         } else if (word >= 0x0401 && word <= 0xfffe) {
 645                                 printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
 646                         }
 647                 }
 648
 649                 /*
 650                  * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
 651                  * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
 652                  * All other values are reserved.
 653                  */
 654                 word = *((uint16_t *) identify + 108);
 655                 if ((word & 0xf000) == 0x5000) {
 656                         uint64_t wwwn;
 657
 658                         wwwn   = *((uint16_t *) identify + 108);
 659                         wwwn <<= 16;
 660                         wwwn  |= *((uint16_t *) identify + 109);
 661                         wwwn <<= 16;
 662                         wwwn  |= *((uint16_t *) identify + 110);
 663                         wwwn <<= 16;
 664                         wwwn  |= *((uint16_t *) identify + 111);
 665                         printf("ID_WWN=0x%llx\n", (unsigned long long int) wwwn);
 666                         /* ATA devices have no vendor extension */
 667                         printf("ID_WWN_WITH_EXTENSION=0x%llx\n", (unsigned long long int) wwwn);
 668                 }
 669
 670                 /* from Linux's include/linux/ata.h */
 671                 if (identify_words[0] == 0x848a || identify_words[0] == 0x844a) {
 672                         printf("ID_ATA_CFA=1\n");
 673                 } else {
 674                         if ((identify_words[83] & 0xc004) == 0x4004) {
 675                                 printf("ID_ATA_CFA=1\n");
 676                         }
 677                 }
 678         } else {
 679                 if (serial[0] != '\0')
 680                         printf("%s_%s\n", model, serial);
 681                 else
 682                         printf("%s\n", model);
 683         }
 684 close:
 685         close(fd);
 686 exit:
 687         udev_unref(udev);
 688         log_close();
 689         return rc;
 690 }