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.sievers@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         struct sg_io_v4 io_v4;
  55         uint8_t cdb[6];
  56         uint8_t sense[32];
  57         int ret;
  58
  59         /*
  60          * INQUIRY, see SPC-4 section 6.4
  61          */
  62         memset(cdb, 0, sizeof(cdb));
  63         cdb[0] = 0x12;                         /* OPERATION CODE: INQUIRY */
  64         cdb[3] = (buf_len >> 8);         /* ALLOCATION LENGTH */
  65         cdb[4] = (buf_len & 0xff);
  66
  67         memset(sense, 0, sizeof(sense));
  68
  69         memset(&io_v4, 0, sizeof(struct sg_io_v4));
  70         io_v4.guard = 'Q';
  71         io_v4.protocol = BSG_PROTOCOL_SCSI;
  72         io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
  73         io_v4.request_len = sizeof (cdb);
  74         io_v4.request = (uintptr_t) cdb;
  75         io_v4.max_response_len = sizeof (sense);
  76         io_v4.response = (uintptr_t) sense;
  77         io_v4.din_xfer_len = buf_len;
  78         io_v4.din_xferp = (uintptr_t) buf;
  79         io_v4.timeout = COMMAND_TIMEOUT_MSEC;
  80
  81         ret = ioctl(fd, SG_IO, &io_v4);
  82         if (ret != 0) {
  83                 /* could be that the driver doesn't do version 4, try version 3 */
  84                 if (errno == EINVAL) {
  85                         struct sg_io_hdr io_hdr;
  86
  87                         memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
  88                         io_hdr.interface_id = 'S';
  89                         io_hdr.cmdp = (unsigned char*) cdb;
  90                         io_hdr.cmd_len = sizeof (cdb);
  91                         io_hdr.dxferp = buf;
  92                         io_hdr.dxfer_len = buf_len;
  93                         io_hdr.sbp = sense;
  94                         io_hdr.mx_sb_len = sizeof (sense);
  95                         io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
  96                         io_hdr.timeout = COMMAND_TIMEOUT_MSEC;
  97
  98                         ret = ioctl(fd, SG_IO, &io_hdr);
  99                         if (ret != 0)
 100                                 goto out;
 101
 102                         /* even if the ioctl succeeds, we need to check the return value */
 103                         if (!(io_hdr.status == 0 &&
 104                               io_hdr.host_status == 0 &&
 105                               io_hdr.driver_status == 0)) {
 106                                 errno = EIO;
 107                                 ret = -1;
 108                                 goto out;
 109                         }
 110                 } else {
 111                         goto out;
 112                 }
 113         }
 114
 115         /* even if the ioctl succeeds, we need to check the return value */
 116         if (!(io_v4.device_status == 0 &&
 117               io_v4.transport_status == 0 &&
 118               io_v4.driver_status == 0)) {
 119                 errno = EIO;
 120                 ret = -1;
 121                 goto out;
 122         }
 123
 124  out:
 125         return ret;
 126 }
 127
 128 static int disk_identify_command(int          fd,
 129                                  void         *buf,
 130                                  size_t          buf_len)
 131 {
 132         struct sg_io_v4 io_v4;
 133         uint8_t cdb[12];
 134         uint8_t sense[32];
 135         uint8_t *desc = sense+8;
 136         int ret;
 137
 138         /*
 139          * ATA Pass-Through 12 byte command, as described in
 140          *
 141          *  T10 04-262r8 ATA Command Pass-Through
 142          *
 143          * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 144          */
 145         memset(cdb, 0, sizeof(cdb));
 146         cdb[0] = 0xa1;                        /* OPERATION CODE: 12 byte pass through */
 147         cdb[1] = 4 << 1;                /* PROTOCOL: PIO Data-in */
 148         cdb[2] = 0x2e;                        /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 149         cdb[3] = 0;                        /* FEATURES */
 150         cdb[4] = 1;                        /* SECTORS */
 151         cdb[5] = 0;                        /* LBA LOW */
 152         cdb[6] = 0;                        /* LBA MID */
 153         cdb[7] = 0;                        /* LBA HIGH */
 154         cdb[8] = 0 & 0x4F;                /* SELECT */
 155         cdb[9] = 0xEC;                        /* Command: ATA IDENTIFY DEVICE */;
 156         memset(sense, 0, sizeof(sense));
 157
 158         memset(&io_v4, 0, sizeof(struct sg_io_v4));
 159         io_v4.guard = 'Q';
 160         io_v4.protocol = BSG_PROTOCOL_SCSI;
 161         io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
 162         io_v4.request_len = sizeof (cdb);
 163         io_v4.request = (uintptr_t) cdb;
 164         io_v4.max_response_len = sizeof (sense);
 165         io_v4.response = (uintptr_t) sense;
 166         io_v4.din_xfer_len = buf_len;
 167         io_v4.din_xferp = (uintptr_t) buf;
 168         io_v4.timeout = COMMAND_TIMEOUT_MSEC;
 169
 170         ret = ioctl(fd, SG_IO, &io_v4);
 171         if (ret != 0) {
 172                 /* could be that the driver doesn't do version 4, try version 3 */
 173                 if (errno == EINVAL) {
 174                         struct sg_io_hdr io_hdr;
 175
 176                         memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
 177                         io_hdr.interface_id = 'S';
 178                         io_hdr.cmdp = (unsigned char*) cdb;
 179                         io_hdr.cmd_len = sizeof (cdb);
 180                         io_hdr.dxferp = buf;
 181                         io_hdr.dxfer_len = buf_len;
 182                         io_hdr.sbp = sense;
 183                         io_hdr.mx_sb_len = sizeof (sense);
 184                         io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
 185                         io_hdr.timeout = COMMAND_TIMEOUT_MSEC;
 186
 187                         ret = ioctl(fd, SG_IO, &io_hdr);
 188                         if (ret != 0)
 189                                 goto out;
 190                 } else {
 191                         goto out;
 192                 }
 193         }
 194
 195         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 196                 errno = EIO;
 197                 ret = -1;
 198                 goto out;
 199         }
 200
 201  out:
 202         return ret;
 203 }
 204
 205 static int disk_identify_packet_device_command(int          fd,
 206                                                void         *buf,
 207                                                size_t          buf_len)
 208 {
 209         struct sg_io_v4 io_v4;
 210         uint8_t cdb[16];
 211         uint8_t sense[32];
 212         uint8_t *desc = sense+8;
 213         int ret;
 214
 215         /*
 216          * ATA Pass-Through 16 byte command, as described in
 217          *
 218          *  T10 04-262r8 ATA Command Pass-Through
 219          *
 220          * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
 221          */
 222         memset(cdb, 0, sizeof(cdb));
 223         cdb[0] = 0x85;                        /* OPERATION CODE: 16 byte pass through */
 224         cdb[1] = 4 << 1;                /* PROTOCOL: PIO Data-in */
 225         cdb[2] = 0x2e;                        /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 226         cdb[3] = 0;                        /* FEATURES */
 227         cdb[4] = 0;                        /* FEATURES */
 228         cdb[5] = 0;                        /* SECTORS */
 229         cdb[6] = 1;                        /* SECTORS */
 230         cdb[7] = 0;                        /* LBA LOW */
 231         cdb[8] = 0;                        /* LBA LOW */
 232         cdb[9] = 0;                        /* LBA MID */
 233         cdb[10] = 0;                        /* LBA MID */
 234         cdb[11] = 0;                        /* LBA HIGH */
 235         cdb[12] = 0;                        /* LBA HIGH */
 236         cdb[13] = 0;                        /* DEVICE */
 237         cdb[14] = 0xA1;                        /* Command: ATA IDENTIFY PACKET DEVICE */;
 238         cdb[15] = 0;                        /* CONTROL */
 239         memset(sense, 0, sizeof(sense));
 240
 241         memset(&io_v4, 0, sizeof(struct sg_io_v4));
 242         io_v4.guard = 'Q';
 243         io_v4.protocol = BSG_PROTOCOL_SCSI;
 244         io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
 245         io_v4.request_len = sizeof (cdb);
 246         io_v4.request = (uintptr_t) cdb;
 247         io_v4.max_response_len = sizeof (sense);
 248         io_v4.response = (uintptr_t) sense;
 249         io_v4.din_xfer_len = buf_len;
 250         io_v4.din_xferp = (uintptr_t) buf;
 251         io_v4.timeout = COMMAND_TIMEOUT_MSEC;
 252
 253         ret = ioctl(fd, SG_IO, &io_v4);
 254         if (ret != 0) {
 255                 /* could be that the driver doesn't do version 4, try version 3 */
 256                 if (errno == EINVAL) {
 257                         struct sg_io_hdr io_hdr;
 258
 259                         memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
 260                         io_hdr.interface_id = 'S';
 261                         io_hdr.cmdp = (unsigned char*) cdb;
 262                         io_hdr.cmd_len = sizeof (cdb);
 263                         io_hdr.dxferp = buf;
 264                         io_hdr.dxfer_len = buf_len;
 265                         io_hdr.sbp = sense;
 266                         io_hdr.mx_sb_len = sizeof (sense);
 267                         io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
 268                         io_hdr.timeout = COMMAND_TIMEOUT_MSEC;
 269
 270                         ret = ioctl(fd, SG_IO, &io_hdr);
 271                         if (ret != 0)
 272                                 goto out;
 273                 } else {
 274                         goto out;
 275                 }
 276         }
 277
 278         if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
 279                 errno = EIO;
 280                 ret = -1;
 281                 goto out;
 282         }
 283
 284  out:
 285         return ret;
 286 }
 287
 288 /**
 289  * disk_identify_get_string:
 290  * @identify: A block of IDENTIFY data
 291  * @offset_words: Offset of the string to get, in words.
 292  * @dest: Destination buffer for the string.
 293  * @dest_len: Length of destination buffer, in bytes.
 294  *
 295  * Copies the ATA string from @identify located at @offset_words into @dest.
 296  */
 297 static void disk_identify_get_string(uint8_t identify[512],
 298                                      unsigned int offset_words,
 299                                      char *dest,
 300                                      size_t dest_len)
 301 {
 302         unsigned int c1;
 303         unsigned int c2;
 304
 305         while (dest_len > 0) {
 306                 c1 = identify[offset_words * 2 + 1];
 307                 c2 = identify[offset_words * 2];
 308                 *dest = c1;
 309                 dest++;
 310                 *dest = c2;
 311                 dest++;
 312                 offset_words++;
 313                 dest_len -= 2;
 314         }
 315 }
 316
 317 static void disk_identify_fixup_string(uint8_t identify[512],
 318                                        unsigned int offset_words,
 319                                        size_t len)
 320 {
 321         disk_identify_get_string(identify, offset_words,
 322                                  (char *) identify + offset_words * 2, len);
 323 }
 324
 325 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
 326 {
 327         uint16_t *p;
 328
 329         p = (uint16_t *) identify;
 330         p[offset_words] = le16toh (p[offset_words]);
 331 }
 332
 333 /**
 334  * disk_identify:
 335  * @udev: The libudev context.
 336  * @fd: File descriptor for the block device.
 337  * @out_identify: Return location for IDENTIFY data.
 338  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 339  *
 340  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 341  * device represented by @fd. If successful, then the result will be
 342  * copied into @out_identify and @out_is_packet_device.
 343  *
 344  * This routine is based on code from libatasmart, Copyright 2008
 345  * Lennart Poettering, LGPL v2.1.
 346  *
 347  * Returns: 0 if the data was successfully obtained, otherwise
 348  * non-zero with errno set.
 349  */
 350 static int disk_identify(struct udev *udev,
 351                          int               fd,
 352                          uint8_t      out_identify[512],
 353                          int              *out_is_packet_device)
 354 {
 355         int ret;
 356         uint8_t inquiry_buf[36];
 357         int peripheral_device_type;
 358         int all_nul_bytes;
 359         int n;
 360         int is_packet_device;
 361
 362         /* init results */
 363         ret = -1;
 364         memset(out_identify, '\0', 512);
 365         is_packet_device = 0;
 366
 367         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 368          * we could accidentally blank media. This is because MMC's BLANK
 369          * command has the same op-code (0x61).
 370          *
 371          * To prevent this from happening we bail out if the device
 372          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 373          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 374          * command first... libata is handling this via its SCSI
 375          * emulation layer.
 376          *
 377          * This also ensures that we're actually dealing with a device
 378          * that understands SCSI commands.
 379          *
 380          * (Yes, it is a bit perverse that we're tunneling the ATA
 381          * command through SCSI and relying on the ATA driver
 382          * emulating SCSI well-enough...)
 383          *
 384          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 385          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 386          * for the original bug-report.)
 387          */
 388         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 389         if (ret != 0)
 390                 goto out;
 391
 392         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 393         peripheral_device_type = inquiry_buf[0] & 0x1f;
 394         if (peripheral_device_type == 0x05)
 395           {
 396             is_packet_device = 1;
 397             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 398             goto check_nul_bytes;
 399           }
 400         if (peripheral_device_type != 0x00) {
 401                 ret = -1;
 402                 errno = EIO;
 403                 goto out;
 404         }
 405
 406         /* OK, now issue the IDENTIFY DEVICE command */
 407         ret = disk_identify_command(fd, out_identify, 512);
 408         if (ret != 0)
 409                 goto out;
 410
 411  check_nul_bytes:
 412          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 413         all_nul_bytes = 1;
 414         for (n = 0; n < 512; n++) {
 415                 if (out_identify[n] != '\0') {
 416                         all_nul_bytes = 0;
 417                         break;
 418                 }
 419         }
 420
 421         if (all_nul_bytes) {
 422                 ret = -1;
 423                 errno = EIO;
 424                 goto out;
 425         }
 426
 427 out:
 428         if (out_is_packet_device != NULL)
 429           *out_is_packet_device = is_packet_device;
 430         return ret;
 431 }
 432
 433 static void log_fn(struct udev *udev, int priority,
 434                    const char *file, int line, const char *fn,
 435                    const char *format, va_list args)
 436 {
 437         vsyslog(priority, format, args);
 438 }
 439
 440 int main(int argc, char *argv[])
 441 {
 442         struct udev *udev;
 443         struct hd_driveid id;
 444         uint8_t identify[512];
 445         uint16_t *identify_words;
 446         char model[41];
 447         char model_enc[256];
 448         char serial[21];
 449         char revision[9];
 450         const char *node = NULL;
 451         int export = 0;
 452         int fd;
 453         uint16_t word;
 454         int rc = 0;
 455         int is_packet_device = 0;
 456         static const struct option options[] = {
 457                 { "export", no_argument, NULL, 'x' },
 458                 { "help", no_argument, NULL, 'h' },
 459                 {}
 460         };
 461
 462         udev = udev_new();
 463         if (udev == NULL)
 464                 goto exit;
 465
 466         log_open();
 467         udev_set_log_fn(udev, log_fn);
 468
 469         while (1) {
 470                 int option;
 471
 472                 option = getopt_long(argc, argv, "xh", options, NULL);
 473                 if (option == -1)
 474                         break;
 475
 476                 switch (option) {
 477                 case 'x':
 478                         export = 1;
 479                         break;
 480                 case 'h':
 481                         printf("Usage: ata_id [--export] [--help] <device>\n"
 482                                "  --export    print values as environment keys\n"
 483                                "  --help      print this help text\n\n");
 484                         goto exit;
 485                 }
 486         }
 487
 488         node = argv[optind];
 489         if (node == NULL) {
 490                 log_error("no node specified\n");
 491                 rc = 1;
 492                 goto exit;
 493         }
 494
 495         fd = open(node, O_RDONLY|O_NONBLOCK);
 496         if (fd < 0) {
 497                 log_error("unable to open '%s'\n", node);
 498                 rc = 1;
 499                 goto exit;
 500         }
 501
 502         if (disk_identify(udev, fd, identify, &is_packet_device) == 0) {
 503                 /*
 504                  * fix up only the fields from the IDENTIFY data that we are going to
 505                  * use and copy it into the hd_driveid struct for convenience
 506                  */
 507                 disk_identify_fixup_string(identify,  10, 20); /* serial */
 508                 disk_identify_fixup_string(identify,  23,  6); /* fwrev */
 509                 disk_identify_fixup_string(identify,  27, 40); /* model */
 510                 disk_identify_fixup_uint16(identify,  0);      /* configuration */
 511                 disk_identify_fixup_uint16(identify,  75);     /* queue depth */
 512                 disk_identify_fixup_uint16(identify,  75);     /* SATA capabilities */
 513                 disk_identify_fixup_uint16(identify,  82);     /* command set supported */
 514                 disk_identify_fixup_uint16(identify,  83);     /* command set supported */
 515                 disk_identify_fixup_uint16(identify,  84);     /* command set supported */
 516                 disk_identify_fixup_uint16(identify,  85);     /* command set supported */
 517                 disk_identify_fixup_uint16(identify,  86);     /* command set supported */
 518                 disk_identify_fixup_uint16(identify,  87);     /* command set supported */
 519                 disk_identify_fixup_uint16(identify,  89);     /* time required for SECURITY ERASE UNIT */
 520                 disk_identify_fixup_uint16(identify,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 521                 disk_identify_fixup_uint16(identify,  91);     /* current APM values */
 522                 disk_identify_fixup_uint16(identify,  94);     /* current AAM value */
 523                 disk_identify_fixup_uint16(identify, 128);     /* device lock function */
 524                 disk_identify_fixup_uint16(identify, 217);     /* nominal media rotation rate */
 525                 memcpy(&id, identify, sizeof id);
 526         } else {
 527                 /* If this fails, then try HDIO_GET_IDENTITY */
 528                 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
 529                         log_info("HDIO_GET_IDENTITY failed for '%s': %m\n", node);
 530                         rc = 2;
 531                         goto close;
 532                 }
 533         }
 534         identify_words = (uint16_t *) identify;
 535
 536         memcpy (model, id.model, 40);
 537         model[40] = '\0';
 538         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 539         util_replace_whitespace((char *) id.model, model, 40);
 540         util_replace_chars(model, NULL);
 541         util_replace_whitespace((char *) id.serial_no, serial, 20);
 542         util_replace_chars(serial, NULL);
 543         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 544         util_replace_chars(revision, NULL);
 545
 546         if (export) {
 547                 /* Set this to convey the disk speaks the ATA protocol */
 548                 printf("ID_ATA=1\n");
 549
 550                 if ((id.config >> 8) & 0x80) {
 551                         /* This is an ATAPI device */
 552                         switch ((id.config >> 8) & 0x1f) {
 553                         case 0:
 554                                 printf("ID_TYPE=cd\n");
 555                                 break;
 556                         case 1:
 557                                 printf("ID_TYPE=tape\n");
 558                                 break;
 559                         case 5:
 560                                 printf("ID_TYPE=cd\n");
 561                                 break;
 562                         case 7:
 563                                 printf("ID_TYPE=optical\n");
 564                                 break;
 565                         default:
 566                                 printf("ID_TYPE=generic\n");
 567                                 break;
 568                         }
 569                 } else {
 570                         printf("ID_TYPE=disk\n");
 571                 }
 572                 printf("ID_BUS=ata\n");
 573                 printf("ID_MODEL=%s\n", model);
 574                 printf("ID_MODEL_ENC=%s\n", model_enc);
 575                 printf("ID_REVISION=%s\n", revision);
 576                 if (serial[0] != '\0') {
 577                         printf("ID_SERIAL=%s_%s\n", model, serial);
 578                         printf("ID_SERIAL_SHORT=%s\n", serial);
 579                 } else {
 580                         printf("ID_SERIAL=%s\n", model);
 581                 }
 582
 583                 if (id.command_set_1 & (1<<5)) {
 584                         printf ("ID_ATA_WRITE_CACHE=1\n");
 585                         printf ("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 586                 }
 587                 if (id.command_set_1 & (1<<10)) {
 588                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 589                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 590
 591                         /*
 592                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 593                          * so it is easy to check whether the protected area is in use.
 594                          */
 595                 }
 596                 if (id.command_set_1 & (1<<3)) {
 597                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 598                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 599                 }
 600                 if (id.command_set_1 & (1<<1)) {
 601                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 602                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 603                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 604                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 605                                 if (id.dlf & (1<<8))
 606                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 607                                 else
 608                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 609                         }
 610                         if (id.dlf & (1<<5))
 611                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 612                         if (id.dlf & (1<<4))
 613                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 614                         if (id.dlf & (1<<3))
 615                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 616                         if (id.dlf & (1<<2))
 617                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 618                 }
 619                 if (id.command_set_1 & (1<<0)) {
 620                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 621                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 622                 }
 623                 if (id.command_set_2 & (1<<9)) {
 624                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 625                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 626                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 627                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 628                 }
 629                 if (id.command_set_2 & (1<<5)) {
 630                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 631                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 632                 }
 633                 if (id.command_set_2 & (1<<3)) {
 634                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 635                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 636                         if ((id.cfs_enable_2 & (1<<3)))
 637                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 638                 }
 639                 if (id.command_set_2 & (1<<0))
 640                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 641
 642                 /*
 643                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 644                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 645                  * the device does not claim compliance with the Serial ATA specification and words
 646                  * 76 through 79 are not valid and shall be ignored.
 647                  */
 648                 word = *((uint16_t *) identify + 76);
 649                 if (word != 0x0000 && word != 0xffff) {
 650                         printf("ID_ATA_SATA=1\n");
 651                         /*
 652                          * If bit 2 of word 76 is set to one, then the device supports the Gen2
 653                          * signaling rate of 3.0 Gb/s (see SATA 2.6).
 654                          *
 655                          * If bit 1 of word 76 is set to one, then the device supports the Gen1
 656                          * signaling rate of 1.5 Gb/s (see SATA 2.6).
 657                          */
 658                         if (word & (1<<2))
 659                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
 660                         if (word & (1<<1))
 661                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
 662                 }
 663
 664                 /* Word 217 indicates the nominal media rotation rate of the device */
 665                 word = *((uint16_t *) identify + 217);
 666                 if (word != 0x0000) {
 667                         if (word == 0x0001) {
 668                                 printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
 669                         } else if (word >= 0x0401 && word <= 0xfffe) {
 670                                 printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
 671                         }
 672                 }
 673
 674                 /*
 675                  * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
 676                  * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
 677                  * All other values are reserved.
 678                  */
 679                 word = *((uint16_t *) identify + 108);
 680                 if ((word & 0xf000) == 0x5000) {
 681                         uint64_t wwwn;
 682
 683                         wwwn   = *((uint16_t *) identify + 108);
 684                         wwwn <<= 16;
 685                         wwwn  |= *((uint16_t *) identify + 109);
 686                         wwwn <<= 16;
 687                         wwwn  |= *((uint16_t *) identify + 110);
 688                         wwwn <<= 16;
 689                         wwwn  |= *((uint16_t *) identify + 111);
 690                         printf("ID_WWN=0x%llx\n", (unsigned long long int) wwwn);
 691                         /* ATA devices have no vendor extension */
 692                         printf("ID_WWN_WITH_EXTENSION=0x%llx\n", (unsigned long long int) wwwn);
 693                 }
 694
 695                 /* from Linux's include/linux/ata.h */
 696                 if (identify_words[0] == 0x848a || identify_words[0] == 0x844a) {
 697                         printf("ID_ATA_CFA=1\n");
 698                 } else {
 699                         if ((identify_words[83] & 0xc004) == 0x4004) {
 700                                 printf("ID_ATA_CFA=1\n");
 701                         }
 702                 }
 703         } else {
 704                 if (serial[0] != '\0')
 705                         printf("%s_%s\n", model, serial);
 706                 else
 707                         printf("%s\n", model);
 708         }
 709 close:
 710         close(fd);
 711 exit:
 712         udev_unref(udev);
 713         log_close();
 714         return rc;
 715 }