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 <assert.h>
  29 #include <string.h>
  30 #include <errno.h>
  31 #include <getopt.h>
  32 #include <scsi/scsi.h>
  33 #include <scsi/sg.h>
  34 #include <scsi/scsi_ioctl.h>
  35 #include <sys/ioctl.h>
  36 #include <sys/types.h>
  37 #include <sys/stat.h>
  38 #include <linux/types.h>
  39 #include <linux/hdreg.h>
  40 #include <linux/fs.h>
  41 #include <linux/cdrom.h>
  42 #include <linux/bsg.h>
  43 #include <arpa/inet.h>
  44
  45 #include "libudev.h"
  46 #include "libudev-private.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         assert(identify != NULL);
 306         assert(dest != NULL);
 307         assert((dest_len & 1) == 0);
 308
 309         while (dest_len > 0) {
 310                 c1 = identify[offset_words * 2 + 1];
 311                 c2 = identify[offset_words * 2];
 312                 *dest = c1;
 313                 dest++;
 314                 *dest = c2;
 315                 dest++;
 316                 offset_words++;
 317                 dest_len -= 2;
 318         }
 319 }
 320
 321 static void disk_identify_fixup_string(uint8_t identify[512],
 322                                        unsigned int offset_words,
 323                                        size_t len)
 324 {
 325         disk_identify_get_string(identify, offset_words,
 326                                  (char *) identify + offset_words * 2, len);
 327 }
 328
 329 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
 330 {
 331         uint16_t *p;
 332
 333         p = (uint16_t *) identify;
 334         p[offset_words] = le16toh (p[offset_words]);
 335 }
 336
 337 /**
 338  * disk_identify:
 339  * @udev: The libudev context.
 340  * @fd: File descriptor for the block device.
 341  * @out_identify: Return location for IDENTIFY data.
 342  * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
 343  *
 344  * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
 345  * device represented by @fd. If successful, then the result will be
 346  * copied into @out_identify and @out_is_packet_device.
 347  *
 348  * This routine is based on code from libatasmart, Copyright 2008
 349  * Lennart Poettering, LGPL v2.1.
 350  *
 351  * Returns: 0 if the data was successfully obtained, otherwise
 352  * non-zero with errno set.
 353  */
 354 static int disk_identify(struct udev *udev,
 355                          int               fd,
 356                          uint8_t      out_identify[512],
 357                          int              *out_is_packet_device)
 358 {
 359         int ret;
 360         uint8_t inquiry_buf[36];
 361         int peripheral_device_type;
 362         int all_nul_bytes;
 363         int n;
 364         int is_packet_device;
 365
 366         assert(out_identify != NULL);
 367
 368         /* init results */
 369         ret = -1;
 370         memset(out_identify, '\0', 512);
 371         is_packet_device = 0;
 372
 373         /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
 374          * we could accidentally blank media. This is because MMC's BLANK
 375          * command has the same op-code (0x61).
 376          *
 377          * To prevent this from happening we bail out if the device
 378          * isn't a Direct Access Block Device, e.g. SCSI type 0x00
 379          * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
 380          * command first... libata is handling this via its SCSI
 381          * emulation layer.
 382          *
 383          * This also ensures that we're actually dealing with a device
 384          * that understands SCSI commands.
 385          *
 386          * (Yes, it is a bit perverse that we're tunneling the ATA
 387          * command through SCSI and relying on the ATA driver
 388          * emulating SCSI well-enough...)
 389          *
 390          * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
 391          * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
 392          * for the original bug-report.)
 393          */
 394         ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
 395         if (ret != 0)
 396                 goto out;
 397
 398         /* SPC-4, section 6.4.2: Standard INQUIRY data */
 399         peripheral_device_type = inquiry_buf[0] & 0x1f;
 400         if (peripheral_device_type == 0x05)
 401           {
 402             is_packet_device = 1;
 403             ret = disk_identify_packet_device_command(fd, out_identify, 512);
 404             goto check_nul_bytes;
 405           }
 406         if (peripheral_device_type != 0x00) {
 407                 ret = -1;
 408                 errno = EIO;
 409                 goto out;
 410         }
 411
 412         /* OK, now issue the IDENTIFY DEVICE command */
 413         ret = disk_identify_command(fd, out_identify, 512);
 414         if (ret != 0)
 415                 goto out;
 416
 417  check_nul_bytes:
 418          /* Check if IDENTIFY data is all NUL bytes - if so, bail */
 419         all_nul_bytes = 1;
 420         for (n = 0; n < 512; n++) {
 421                 if (out_identify[n] != '\0') {
 422                         all_nul_bytes = 0;
 423                         break;
 424                 }
 425         }
 426
 427         if (all_nul_bytes) {
 428                 ret = -1;
 429                 errno = EIO;
 430                 goto out;
 431         }
 432
 433 out:
 434         if (out_is_packet_device != NULL)
 435           *out_is_packet_device = is_packet_device;
 436         return ret;
 437 }
 438
 439 static void log_fn(struct udev *udev, int priority,
 440                    const char *file, int line, const char *fn,
 441                    const char *format, va_list args)
 442 {
 443         vsyslog(priority, format, args);
 444 }
 445
 446 int main(int argc, char *argv[])
 447 {
 448         struct udev *udev;
 449         struct hd_driveid id;
 450         uint8_t identify[512];
 451         uint16_t *identify_words;
 452         char model[41];
 453         char model_enc[256];
 454         char serial[21];
 455         char revision[9];
 456         const char *node = NULL;
 457         int export = 0;
 458         int fd;
 459         uint16_t word;
 460         int rc = 0;
 461         int is_packet_device = 0;
 462         static const struct option options[] = {
 463                 { "export", no_argument, NULL, 'x' },
 464                 { "help", no_argument, NULL, 'h' },
 465                 {}
 466         };
 467
 468         udev = udev_new();
 469         if (udev == NULL)
 470                 goto exit;
 471
 472         udev_log_init("ata_id");
 473         udev_set_log_fn(udev, log_fn);
 474
 475         while (1) {
 476                 int option;
 477
 478                 option = getopt_long(argc, argv, "xh", options, NULL);
 479                 if (option == -1)
 480                         break;
 481
 482                 switch (option) {
 483                 case 'x':
 484                         export = 1;
 485                         break;
 486                 case 'h':
 487                         printf("Usage: ata_id [--export] [--help] <device>\n"
 488                                "  --export    print values as environment keys\n"
 489                                "  --help      print this help text\n\n");
 490                         goto exit;
 491                 }
 492         }
 493
 494         node = argv[optind];
 495         if (node == NULL) {
 496                 err(udev, "no node specified\n");
 497                 rc = 1;
 498                 goto exit;
 499         }
 500
 501         fd = open(node, O_RDONLY|O_NONBLOCK);
 502         if (fd < 0) {
 503                 err(udev, "unable to open '%s'\n", node);
 504                 rc = 1;
 505                 goto exit;
 506         }
 507
 508         if (disk_identify(udev, fd, identify, &is_packet_device) == 0) {
 509                 /*
 510                  * fix up only the fields from the IDENTIFY data that we are going to
 511                  * use and copy it into the hd_driveid struct for convenience
 512                  */
 513                 disk_identify_fixup_string (identify,  10, 20); /* serial */
 514                 disk_identify_fixup_string (identify,  23,  6); /* fwrev */
 515                 disk_identify_fixup_string (identify,  27, 40); /* model */
 516                 disk_identify_fixup_uint16 (identify,  0);      /* configuration */
 517                 disk_identify_fixup_uint16 (identify,  75);     /* queue depth */
 518                 disk_identify_fixup_uint16 (identify,  75);     /* SATA capabilities */
 519                 disk_identify_fixup_uint16 (identify,  82);     /* command set supported */
 520                 disk_identify_fixup_uint16 (identify,  83);     /* command set supported */
 521                 disk_identify_fixup_uint16 (identify,  84);     /* command set supported */
 522                 disk_identify_fixup_uint16 (identify,  85);     /* command set supported */
 523                 disk_identify_fixup_uint16 (identify,  86);     /* command set supported */
 524                 disk_identify_fixup_uint16 (identify,  87);     /* command set supported */
 525                 disk_identify_fixup_uint16 (identify,  89);     /* time required for SECURITY ERASE UNIT */
 526                 disk_identify_fixup_uint16 (identify,  90);     /* time required for enhanced SECURITY ERASE UNIT */
 527                 disk_identify_fixup_uint16 (identify,  91);     /* current APM values */
 528                 disk_identify_fixup_uint16 (identify,  94);     /* current AAM value */
 529                 disk_identify_fixup_uint16 (identify, 128);     /* device lock function */
 530                 disk_identify_fixup_uint16 (identify, 217);     /* nominal media rotation rate */
 531                 memcpy(&id, identify, sizeof id);
 532         } else {
 533                 /* If this fails, then try HDIO_GET_IDENTITY */
 534                 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
 535                         info(udev, "HDIO_GET_IDENTITY failed for '%s': %m\n", node);
 536                         rc = 2;
 537                         goto close;
 538                 }
 539         }
 540         identify_words = (uint16_t *) identify;
 541
 542         memcpy (model, id.model, 40);
 543         model[40] = '\0';
 544         udev_util_encode_string(model, model_enc, sizeof(model_enc));
 545         util_replace_whitespace((char *) id.model, model, 40);
 546         util_replace_chars(model, NULL);
 547         util_replace_whitespace((char *) id.serial_no, serial, 20);
 548         util_replace_chars(serial, NULL);
 549         util_replace_whitespace((char *) id.fw_rev, revision, 8);
 550         util_replace_chars(revision, NULL);
 551
 552         if (export) {
 553                 /* Set this to convey the disk speaks the ATA protocol */
 554                 printf("ID_ATA=1\n");
 555
 556                 if ((id.config >> 8) & 0x80) {
 557                         /* This is an ATAPI device */
 558                         switch ((id.config >> 8) & 0x1f) {
 559                         case 0:
 560                                 printf("ID_TYPE=cd\n");
 561                                 break;
 562                         case 1:
 563                                 printf("ID_TYPE=tape\n");
 564                                 break;
 565                         case 5:
 566                                 printf("ID_TYPE=cd\n");
 567                                 break;
 568                         case 7:
 569                                 printf("ID_TYPE=optical\n");
 570                                 break;
 571                         default:
 572                                 printf("ID_TYPE=generic\n");
 573                                 break;
 574                         }
 575                 } else {
 576                         printf("ID_TYPE=disk\n");
 577                 }
 578                 printf("ID_BUS=ata\n");
 579                 printf("ID_MODEL=%s\n", model);
 580                 printf("ID_MODEL_ENC=%s\n", model_enc);
 581                 printf("ID_REVISION=%s\n", revision);
 582                 if (serial[0] != '\0') {
 583                         printf("ID_SERIAL=%s_%s\n", model, serial);
 584                         printf("ID_SERIAL_SHORT=%s\n", serial);
 585                 } else {
 586                         printf("ID_SERIAL=%s\n", model);
 587                 }
 588
 589                 if (id.command_set_1 & (1<<5)) {
 590                         printf ("ID_ATA_WRITE_CACHE=1\n");
 591                         printf ("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
 592                 }
 593                 if (id.command_set_1 & (1<<10)) {
 594                         printf("ID_ATA_FEATURE_SET_HPA=1\n");
 595                         printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
 596
 597                         /*
 598                          * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
 599                          * so it is easy to check whether the protected area is in use.
 600                          */
 601                 }
 602                 if (id.command_set_1 & (1<<3)) {
 603                         printf("ID_ATA_FEATURE_SET_PM=1\n");
 604                         printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
 605                 }
 606                 if (id.command_set_1 & (1<<1)) {
 607                         printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
 608                         printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
 609                         printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
 610                         if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
 611                                 if (id.dlf & (1<<8))
 612                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
 613                                 else
 614                                         printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
 615                         }
 616                         if (id.dlf & (1<<5))
 617                                 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
 618                         if (id.dlf & (1<<4))
 619                                 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
 620                         if (id.dlf & (1<<3))
 621                                 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
 622                         if (id.dlf & (1<<2))
 623                                 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
 624                 }
 625                 if (id.command_set_1 & (1<<0)) {
 626                         printf("ID_ATA_FEATURE_SET_SMART=1\n");
 627                         printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
 628                 }
 629                 if (id.command_set_2 & (1<<9)) {
 630                         printf("ID_ATA_FEATURE_SET_AAM=1\n");
 631                         printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
 632                         printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
 633                         printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
 634                 }
 635                 if (id.command_set_2 & (1<<5)) {
 636                         printf("ID_ATA_FEATURE_SET_PUIS=1\n");
 637                         printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
 638                 }
 639                 if (id.command_set_2 & (1<<3)) {
 640                         printf("ID_ATA_FEATURE_SET_APM=1\n");
 641                         printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
 642                         if ((id.cfs_enable_2 & (1<<3)))
 643                                 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
 644                 }
 645                 if (id.command_set_2 & (1<<0))
 646                         printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
 647
 648                 /*
 649                  * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
 650                  * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
 651                  * the device does not claim compliance with the Serial ATA specification and words
 652                  * 76 through 79 are not valid and shall be ignored.
 653                  */
 654                 word = *((uint16_t *) identify + 76);
 655                 if (word != 0x0000 && word != 0xffff) {
 656                         printf("ID_ATA_SATA=1\n");
 657                         /*
 658                          * If bit 2 of word 76 is set to one, then the device supports the Gen2
 659                          * signaling rate of 3.0 Gb/s (see SATA 2.6).
 660                          *
 661                          * If bit 1 of word 76 is set to one, then the device supports the Gen1
 662                          * signaling rate of 1.5 Gb/s (see SATA 2.6).
 663                          */
 664                         if (word & (1<<2))
 665                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
 666                         if (word & (1<<1))
 667                                 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
 668                 }
 669
 670                 /* Word 217 indicates the nominal media rotation rate of the device */
 671                 word = *((uint16_t *) identify + 217);
 672                 if (word != 0x0000) {
 673                         if (word == 0x0001) {
 674                                 printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
 675                         } else if (word >= 0x0401 && word <= 0xfffe) {
 676                                 printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
 677                         }
 678                 }
 679
 680                 /*
 681                  * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
 682                  * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
 683                  * All other values are reserved.
 684                  */
 685                 word = *((uint16_t *) identify + 108);
 686                 if ((word & 0xf000) == 0x5000) {
 687                         uint64_t wwwn;
 688
 689                         wwwn   = *((uint16_t *) identify + 108);
 690                         wwwn <<= 16;
 691                         wwwn  |= *((uint16_t *) identify + 109);
 692                         wwwn <<= 16;
 693                         wwwn  |= *((uint16_t *) identify + 110);
 694                         wwwn <<= 16;
 695                         wwwn  |= *((uint16_t *) identify + 111);
 696                         printf("ID_WWN=0x%llx\n", (unsigned long long int) wwwn);
 697                         /* ATA devices have no vendor extension */
 698                         printf("ID_WWN_WITH_EXTENSION=0x%llx\n", (unsigned long long int) wwwn);
 699                 }
 700
 701                 /* from Linux's include/linux/ata.h */
 702                 if (identify_words[0] == 0x848a || identify_words[0] == 0x844a) {
 703                         printf("ID_ATA_CFA=1\n");
 704                 } else {
 705                         if ((identify_words[83] & 0xc004) == 0x4004) {
 706                                 printf("ID_ATA_CFA=1\n");
 707                         }
 708                 }
 709         } else {
 710                 if (serial[0] != '\0')
 711                         printf("%s_%s\n", model, serial);
 712                 else
 713                         printf("%s\n", model);
 714         }
 715 close:
 716         close(fd);
 717 exit:
 718         udev_unref(udev);
 719         udev_log_close();
 720         return rc;
 721 }