atasmart.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 /***
   4     This file is part of libatasmart.
   5
   6     Copyright 2008 Lennart Poettering
   7
   8     libatasmart is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU Lesser General Public License as
  10     published by the Free Software Foundation, either version 2.1 of the
  11     License, or (at your option) any later version.
  12
  13     libatasmart is distributed in the hope that it will be useful, but
  14     WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16     Lesser General Public License for more details.
  17
  18     You should have received a copy of the GNU Lesser General Public
  19     License along with libatasmart. If not, If not, see
  20     <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <arpa/inet.h>
  28 #include <stdlib.h>
  29 #include <alloca.h>
  30 #include <assert.h>
  31 #include <fcntl.h>
  32 #include <unistd.h>
  33 #include <errno.h>
  34 #include <string.h>
  35 #include <stdio.h>
  36 #include <sys/stat.h>
  37 #include <sys/ioctl.h>
  38 #include <scsi/scsi.h>
  39 #include <scsi/sg.h>
  40 #include <scsi/scsi_ioctl.h>
  41 #include <linux/hdreg.h>
  42 #include <linux/fs.h>
  43 #include <sys/types.h>
  44 #include <regex.h>
  45 #include <sys/param.h>
  46 #include <libudev.h>
  47
  48 #include "atasmart.h"
  49
  50 #ifndef STRPOOL
  51 #define _P(x) x
  52 #endif
  53
  54 #define SK_TIMEOUT 2000
  55
  56 typedef enum SkDirection {
  57         SK_DIRECTION_NONE,
  58         SK_DIRECTION_IN,
  59         SK_DIRECTION_OUT,
  60         _SK_DIRECTION_MAX
  61 } SkDirection;
  62
  63 typedef enum SkDiskType {
  64         /* These three will be autotested for: */
  65         SK_DISK_TYPE_ATA_PASSTHROUGH_12, /* ATA passthrough over SCSI transport, 12-byte version */
  66         SK_DISK_TYPE_ATA_PASSTHROUGH_16, /* ATA passthrough over SCSI transport, 16-byte version */
  67         SK_DISK_TYPE_LINUX_IDE,          /* Classic Linux /dev/hda ioctls */
  68
  69         /* These three will not be autotested for */
  70         SK_DISK_TYPE_SUNPLUS,            /* SunPlus USB/ATA bridges */
  71         SK_DISK_TYPE_JMICRON,            /* JMicron USB/ATA bridges */
  72         SK_DISK_TYPE_BLOB,               /* From a file */
  73         SK_DISK_TYPE_NONE,               /* No access method */
  74         SK_DISK_TYPE_AUTO,               /* We don't know yet */
  75         _SK_DISK_TYPE_MAX,
  76         _SK_DISK_TYPE_TEST_MAX = SK_DISK_TYPE_SUNPLUS /* only auto test until here */
  77 } SkDiskType;
  78
  79 #if __BYTE_ORDER == __LITTLE_ENDIAN
  80 #define MAKE_TAG(a,b,c,d)                        \
  81         (((uint32_t) d << 24) |                  \
  82          ((uint32_t) c << 16) |                  \
  83          ((uint32_t) b << 8) |                   \
  84          ((uint32_t) a))
  85 #else
  86 #define MAKE_TAG(a,b,c,d)                        \
  87         (((uint32_t) a << 24) |                  \
  88          ((uint32_t) b << 16) |                  \
  89          ((uint32_t) c << 8) |                   \
  90          ((uint32_t) d))
  91 #endif
  92
  93 typedef enum SkBlobTag {
  94         SK_BLOB_TAG_IDENTIFY = MAKE_TAG('I', 'D', 'F', 'Y'),
  95         SK_BLOB_TAG_SMART_STATUS = MAKE_TAG('S', 'M', 'S', 'T'),
  96         SK_BLOB_TAG_SMART_DATA = MAKE_TAG('S', 'M', 'D', 'T'),
  97         SK_BLOB_TAG_SMART_THRESHOLDS = MAKE_TAG('S', 'M', 'T', 'H')
  98 } SkBlobTag;
  99
 100 struct SkDisk {
 101         char *name;
 102         int fd;
 103         SkDiskType type;
 104
 105         uint64_t size;
 106
 107         uint8_t identify[512];
 108         uint8_t smart_data[512];
 109         uint8_t smart_thresholds[512];
 110
 111         SkBool smart_initialized:1;
 112
 113         SkBool identify_valid:1;
 114         SkBool smart_data_valid:1;
 115         SkBool smart_thresholds_valid:1;
 116
 117         SkBool blob_smart_status:1;
 118         SkBool blob_smart_status_valid:1;
 119
 120         SkBool attribute_verification_bad:1;
 121
 122         SkIdentifyParsedData identify_parsed_data;
 123         SkSmartParsedData smart_parsed_data;
 124
 125         void *blob;
 126 };
 127
 128 /* ATA commands */
 129 typedef enum SkAtaCommand {
 130         SK_ATA_COMMAND_IDENTIFY_DEVICE = 0xEC,
 131         SK_ATA_COMMAND_IDENTIFY_PACKET_DEVICE = 0xA1,
 132         SK_ATA_COMMAND_SMART = 0xB0,
 133         SK_ATA_COMMAND_CHECK_POWER_MODE = 0xE5
 134 } SkAtaCommand;
 135
 136 /* ATA SMART subcommands (ATA8 7.52.1) */
 137 typedef enum SkSmartCommand {
 138         SK_SMART_COMMAND_READ_DATA = 0xD0,
 139         SK_SMART_COMMAND_READ_THRESHOLDS = 0xD1,
 140         SK_SMART_COMMAND_EXECUTE_OFFLINE_IMMEDIATE = 0xD4,
 141         SK_SMART_COMMAND_ENABLE_OPERATIONS = 0xD8,
 142         SK_SMART_COMMAND_DISABLE_OPERATIONS = 0xD9,
 143         SK_SMART_COMMAND_RETURN_STATUS = 0xDA
 144 } SkSmartCommand;
 145
 146 /* Hmm, if the data we parse is out of a certain range just consider it misparsed */
 147 #define SK_MKELVIN_VALID_MIN ((uint64_t) ((-15LL*1000LL) + 273150LL))
 148 #define SK_MKELVIN_VALID_MAX ((uint64_t) ((100LL*1000LL) + 273150LL))
 149
 150 #define SK_MSECOND_VALID_MIN 1ULL
 151 #define SK_MSECOND_VALID_SHORT_MAX (60ULL * 60ULL * 1000ULL)
 152 #define SK_MSECOND_VALID_LONG_MAX (30ULL * 365ULL * 24ULL * 60ULL * 60ULL * 1000ULL)
 153
 154 static int init_smart(SkDisk *d);
 155
 156 static const char *disk_type_to_human_string(SkDiskType type) {
 157
 158         /* %STRINGPOOLSTART% */
 159         static const char* const map[_SK_DISK_TYPE_MAX] = {
 160                 [SK_DISK_TYPE_ATA_PASSTHROUGH_16] = "16 Byte SCSI ATA SAT Passthru",
 161                 [SK_DISK_TYPE_ATA_PASSTHROUGH_12] = "12 Byte SCSI ATA SAT Passthru",
 162                 [SK_DISK_TYPE_LINUX_IDE] = "Native Linux IDE",
 163                 [SK_DISK_TYPE_SUNPLUS] = "Sunplus SCSI ATA Passthru",
 164                 [SK_DISK_TYPE_JMICRON] = "JMicron SCSI ATA Passthru",
 165                 [SK_DISK_TYPE_BLOB] = "Blob",
 166                 [SK_DISK_TYPE_AUTO] = "Automatic",
 167                 [SK_DISK_TYPE_NONE] = "None"
 168         };
 169         /* %STRINGPOOLSTOP% */
 170
 171         if (type >= _SK_DISK_TYPE_MAX)
 172                 return NULL;
 173
 174         return _P(map[type]);
 175 }
 176
 177 static const char *disk_type_to_prefix_string(SkDiskType type) {
 178
 179         /* %STRINGPOOLSTART% */
 180         static const char* const map[_SK_DISK_TYPE_MAX] = {
 181                 [SK_DISK_TYPE_ATA_PASSTHROUGH_16] = "sat16",
 182                 [SK_DISK_TYPE_ATA_PASSTHROUGH_12] = "sat12",
 183                 [SK_DISK_TYPE_LINUX_IDE] = "linux-ide",
 184                 [SK_DISK_TYPE_SUNPLUS] = "sunplus",
 185                 [SK_DISK_TYPE_JMICRON] = "jmicron",
 186                 [SK_DISK_TYPE_NONE] = "none",
 187                 [SK_DISK_TYPE_AUTO] = "auto",
 188         };
 189         /* %STRINGPOOLSTOP% */
 190
 191         if (type >= _SK_DISK_TYPE_MAX)
 192                 return NULL;
 193
 194         return _P(map[type]);
 195 }
 196
 197 static const char *disk_type_from_string(const char *s, SkDiskType *type) {
 198         unsigned u;
 199
 200         assert(s);
 201         assert(type);
 202
 203         for (u = 0; u < _SK_DISK_TYPE_MAX; u++) {
 204                 const char *t;
 205                 size_t l;
 206
 207                 if (!(t = disk_type_to_prefix_string(u)))
 208                         continue;
 209
 210                 l = strlen(t);
 211
 212                 if (strncmp(s, t, l))
 213                         continue;
 214
 215                 if (s[l] != ':')
 216                         continue;
 217
 218                 *type = u;
 219
 220                 return s + l + 1;
 221         }
 222
 223         return NULL;
 224 }
 225
 226 static SkBool disk_smart_is_available(SkDisk *d) {
 227         return d->identify_valid && !!(d->identify[164] & 1);
 228 }
 229
 230 static SkBool disk_smart_is_enabled(SkDisk *d) {
 231         return d->identify_valid && !!(d->identify[170] & 1);
 232 }
 233
 234 static SkBool disk_smart_is_conveyance_test_available(SkDisk *d) {
 235         assert(d->smart_data_valid);
 236
 237         return !!(d->smart_data[367] & 32);
 238 }
 239 static SkBool disk_smart_is_short_and_extended_test_available(SkDisk *d) {
 240         assert(d->smart_data_valid);
 241
 242         return !!(d->smart_data[367] & 16);
 243 }
 244
 245 static SkBool disk_smart_is_start_test_available(SkDisk *d) {
 246         assert(d->smart_data_valid);
 247
 248         return !!(d->smart_data[367] & 1);
 249 }
 250
 251 static SkBool disk_smart_is_abort_test_available(SkDisk *d) {
 252         assert(d->smart_data_valid);
 253
 254         return !!(d->smart_data[367] & 41);
 255 }
 256
 257 static int disk_linux_ide_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
 258         uint8_t *bytes = cmd_data;
 259         int ret;
 260
 261         assert(d->type == SK_DISK_TYPE_LINUX_IDE);
 262
 263         switch (direction) {
 264
 265                 case SK_DIRECTION_OUT:
 266
 267                         /* We could use HDIO_DRIVE_TASKFILE here, but
 268                          * that's a deprecated ioctl(), hence we don't
 269                          * do it. And we don't need writing anyway. */
 270
 271                         errno = ENOTSUP;
 272                         return -1;
 273
 274                 case SK_DIRECTION_IN: {
 275                         uint8_t *ioctl_data;
 276
 277                         /* We have HDIO_DRIVE_CMD which can only read, but not write,
 278                          * and cannot do LBA. We use it for all read commands. */
 279
 280                         ioctl_data = alloca(4 + *len);
 281                         memset(ioctl_data, 0, 4 + *len);
 282
 283                         ioctl_data[0] = (uint8_t) command;  /* COMMAND */
 284                         ioctl_data[1] = ioctl_data[0] == WIN_SMART ? bytes[9] : bytes[3];  /* SECTOR/NSECTOR */
 285                         ioctl_data[2] = bytes[1];          /* FEATURE */
 286                         ioctl_data[3] = bytes[3];          /* NSECTOR */
 287
 288                         if ((ret = ioctl(d->fd, HDIO_DRIVE_CMD, ioctl_data)) < 0)
 289                                 return ret;
 290
 291                         memset(bytes, 0, 12);
 292                         bytes[11] = ioctl_data[0];
 293                         bytes[1] = ioctl_data[1];
 294                         bytes[3] = ioctl_data[2];
 295
 296                         memcpy(data, ioctl_data+4, *len);
 297
 298                         return ret;
 299                 }
 300
 301                 case SK_DIRECTION_NONE: {
 302                         uint8_t ioctl_data[7];
 303
 304                         /* We have HDIO_DRIVE_TASK which can neither read nor
 305                          * write, but can do LBA. We use it for all commands that
 306                          * do neither read nor write */
 307
 308                         memset(ioctl_data, 0, sizeof(ioctl_data));
 309
 310                         ioctl_data[0] = (uint8_t) command;  /* COMMAND */
 311                         ioctl_data[1] = bytes[1];         /* FEATURE */
 312                         ioctl_data[2] = bytes[3];         /* NSECTOR */
 313
 314                         ioctl_data[3] = bytes[9];         /* LBA LOW */
 315                         ioctl_data[4] = bytes[8];         /* LBA MID */
 316                         ioctl_data[5] = bytes[7];         /* LBA HIGH */
 317                         ioctl_data[6] = bytes[10];        /* SELECT */
 318
 319                         if ((ret = ioctl(d->fd, HDIO_DRIVE_TASK, ioctl_data)))
 320                                 return ret;
 321
 322                         memset(bytes, 0, 12);
 323                         bytes[11] = ioctl_data[0];
 324                         bytes[1] = ioctl_data[1];
 325                         bytes[3] = ioctl_data[2];
 326
 327                         bytes[9] = ioctl_data[3];
 328                         bytes[8] = ioctl_data[4];
 329                         bytes[7] = ioctl_data[5];
 330
 331                         bytes[10] = ioctl_data[6];
 332
 333                         return ret;
 334                 }
 335
 336                 default:
 337                         assert(FALSE);
 338                         return -1;
 339         }
 340 }
 341
 342 /* Sends a SCSI command block */
 343 static int sg_io(int fd, int direction,
 344                  const void *cdb, size_t cdb_len,
 345                  void *data, size_t data_len,
 346                  void *sense, size_t sense_len) {
 347
 348         struct sg_io_hdr io_hdr;
 349
 350         memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
 351
 352         io_hdr.interface_id = 'S';
 353         io_hdr.cmdp = (unsigned char*) cdb;
 354         io_hdr.cmd_len = cdb_len;
 355         io_hdr.dxferp = data;
 356         io_hdr.dxfer_len = data_len;
 357         io_hdr.sbp = sense;
 358         io_hdr.mx_sb_len = sense_len;
 359         io_hdr.dxfer_direction = direction;
 360         io_hdr.timeout = SK_TIMEOUT;
 361
 362         return ioctl(fd, SG_IO, &io_hdr);
 363 }
 364
 365 static int disk_passthrough_16_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
 366         uint8_t *bytes = cmd_data;
 367         uint8_t cdb[16];
 368         uint8_t sense[32];
 369         uint8_t *desc = sense+8;
 370         int ret;
 371
 372         static const int direction_map[] = {
 373                 [SK_DIRECTION_NONE] = SG_DXFER_NONE,
 374                 [SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
 375                 [SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
 376         };
 377
 378         assert(d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_16);
 379
 380         /* ATA Pass-Through 16 byte command, as described in "T10 04-262r8
 381          * ATA Command Pass-Through":
 382          * http://www.t10.org/ftp/t10/document.04/04-262r8.pdf */
 383
 384         memset(cdb, 0, sizeof(cdb));
 385
 386         cdb[0] = 0x85; /* OPERATION CODE: 16 byte pass through */
 387
 388         if (direction == SK_DIRECTION_NONE) {
 389                 cdb[1] = 3 << 1;   /* PROTOCOL: Non-Data */
 390                 cdb[2] = 0x20;     /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=0, T_LENGTH=0 */
 391
 392         } else if (direction == SK_DIRECTION_IN) {
 393                 cdb[1] = 4 << 1;   /* PROTOCOL: PIO Data-in */
 394                 cdb[2] = 0x2e;     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 395
 396         } else if (direction == SK_DIRECTION_OUT) {
 397                 cdb[1] = 5 << 1;   /* PROTOCOL: PIO Data-Out */
 398                 cdb[2] = 0x26;     /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=1, T_LENGTH=2 */
 399         }
 400
 401         cdb[3] = bytes[0]; /* FEATURES */
 402         cdb[4] = bytes[1];
 403
 404         cdb[5] = bytes[2]; /* SECTORS */
 405         cdb[6] = bytes[3];
 406
 407         cdb[8] = bytes[9]; /* LBA LOW */
 408         cdb[10] = bytes[8]; /* LBA MID */
 409         cdb[12] = bytes[7]; /* LBA HIGH */
 410
 411         cdb[13] = bytes[10] & 0x4F; /* SELECT */
 412         cdb[14] = (uint8_t) command;
 413
 414         memset(sense, 0, sizeof(sense));
 415
 416         if ((ret = sg_io(d->fd, direction_map[direction], cdb, sizeof(cdb), data, len ? *len : 0, sense, sizeof(sense))) < 0)
 417                 return ret;
 418
 419         if (sense[0] != 0x72 || desc[0] != 0x9 || desc[1] != 0x0c) {
 420                 errno = EIO;
 421                 return -1;
 422         }
 423
 424         memset(bytes, 0, 12);
 425
 426         bytes[1] = desc[3];
 427         bytes[2] = desc[4];
 428         bytes[3] = desc[5];
 429         bytes[9] = desc[7];
 430         bytes[8] = desc[9];
 431         bytes[7] = desc[11];
 432         bytes[10] = desc[12];
 433         bytes[11] = desc[13];
 434
 435         return ret;
 436 }
 437
 438 static int disk_passthrough_12_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
 439         uint8_t *bytes = cmd_data;
 440         uint8_t cdb[12];
 441         uint8_t sense[32];
 442         uint8_t *desc = sense+8;
 443         int ret;
 444
 445         static const int direction_map[] = {
 446                 [SK_DIRECTION_NONE] = SG_DXFER_NONE,
 447                 [SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
 448                 [SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
 449         };
 450
 451         assert(d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_12);
 452
 453         /* ATA Pass-Through 12 byte command, as described in "T10 04-262r8
 454          * ATA Command Pass-Through":
 455          * http://www.t10.org/ftp/t10/document.04/04-262r8.pdf */
 456
 457         memset(cdb, 0, sizeof(cdb));
 458
 459         cdb[0] = 0xa1; /* OPERATION CODE: 12 byte pass through */
 460
 461         if (direction == SK_DIRECTION_NONE) {
 462                 cdb[1] = 3 << 1;   /* PROTOCOL: Non-Data */
 463                 cdb[2] = 0x20;     /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=0, T_LENGTH=0 */
 464
 465         } else if (direction == SK_DIRECTION_IN) {
 466                 cdb[1] = 4 << 1;   /* PROTOCOL: PIO Data-in */
 467                 cdb[2] = 0x2e;     /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
 468
 469         } else if (direction == SK_DIRECTION_OUT) {
 470                 cdb[1] = 5 << 1;   /* PROTOCOL: PIO Data-Out */
 471                 cdb[2] = 0x26;     /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=1, T_LENGTH=2 */
 472         }
 473
 474         cdb[3] = bytes[1]; /* FEATURES */
 475         cdb[4] = bytes[3]; /* SECTORS */
 476
 477         cdb[5] = bytes[9]; /* LBA LOW */
 478         cdb[6] = bytes[8]; /* LBA MID */
 479         cdb[7] = bytes[7]; /* LBA HIGH */
 480
 481         cdb[8] = bytes[10] & 0x4F; /* SELECT */
 482         cdb[9] = (uint8_t) command;
 483
 484         memset(sense, 0, sizeof(sense));
 485
 486         if ((ret = sg_io(d->fd, direction_map[direction], cdb, sizeof(cdb), data, len ? *len : 0, sense, sizeof(sense))) < 0)
 487                 return ret;
 488
 489         if (sense[0] != 0x72 || desc[0] != 0x9 || desc[1] != 0x0c) {
 490                 errno = EIO;
 491                 return -1;
 492         }
 493
 494         memset(bytes, 0, 12);
 495
 496         bytes[1] = desc[3]; /* FEATURES */
 497         bytes[2] = desc[4]; /* STATUS */
 498         bytes[3] = desc[5]; /* SECTORS */
 499         bytes[9] = desc[7]; /* LBA LOW */
 500         bytes[8] = desc[9]; /* LBA MID */
 501         bytes[7] = desc[11]; /* LBA HIGH */
 502         bytes[10] = desc[12]; /* SELECT */
 503         bytes[11] = desc[13]; /* ERROR */
 504
 505         return ret;
 506 }
 507
 508 static int disk_sunplus_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
 509         uint8_t *bytes = cmd_data;
 510         uint8_t cdb[12];
 511         uint8_t sense[32], buf[8];
 512         int ret;
 513         static const int direction_map[] = {
 514                 [SK_DIRECTION_NONE] = SG_DXFER_NONE,
 515                 [SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
 516                 [SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
 517         };
 518
 519         assert(d->type == SK_DISK_TYPE_SUNPLUS);
 520
 521         /* SunplusIT specific SCSI ATA pass-thru. Inspired by smartmonutils' support for these bridges */
 522
 523         memset(cdb, 0, sizeof(cdb));
 524
 525         cdb[0] = 0xF8; /* OPERATION CODE: Sunplus specific */
 526         cdb[1] = 0x00; /* Subcommand: Pass-thru */
 527         cdb[2] = 0x22;
 528
 529         if (direction == SK_DIRECTION_NONE)
 530                 cdb[3] = 0x00; /* protocol */
 531         else if (direction == SK_DIRECTION_IN)
 532                 cdb[3] = 0x10; /* protocol */
 533         else if (direction == SK_DIRECTION_OUT)
 534                 cdb[3] = 0x11; /* protocol */
 535
 536         cdb[4] = bytes[3]; /* size? */
 537         cdb[5] = bytes[1]; /* FEATURES */
 538         cdb[6] = bytes[3]; /* SECTORS */
 539         cdb[7] = bytes[9]; /* LBA LOW */
 540         cdb[8] = bytes[8]; /* LBA MID */
 541         cdb[9] = bytes[7]; /* LBA HIGH */
 542         cdb[10] = bytes[10] | 0xA0; /* SELECT */
 543         cdb[11] = (uint8_t) command;
 544
 545         memset(sense, 0, sizeof(sense));
 546
 547         /* Issue request */
 548         if ((ret = sg_io(d->fd, direction_map[direction], cdb, sizeof(cdb), data, len ? *len : 0, sense, sizeof(sense))) < 0)
 549                 return ret;
 550
 551         memset(cdb, 0, sizeof(cdb));
 552
 553         cdb[0] = 0xF8;
 554         cdb[1] = 0x00;
 555         cdb[2] = 0x21;
 556
 557         memset(buf, 0, sizeof(buf));
 558
 559         /* Ask for response */
 560         if ((ret = sg_io(d->fd, SG_DXFER_FROM_DEV, cdb, sizeof(cdb), buf, sizeof(buf), sense, sizeof(sense))) < 0)
 561                 return ret;
 562
 563         memset(bytes, 0, 12);
 564
 565         bytes[2] = buf[1]; /* ERROR */
 566         bytes[3] = buf[2]; /* SECTORS */
 567         bytes[9] = buf[3]; /* LBA LOW */
 568         bytes[8] = buf[4]; /* LBA MID */
 569         bytes[7] = buf[5]; /* LBA HIGH */
 570         bytes[10] = buf[6]; /* SELECT */
 571         bytes[11] = buf[7]; /* STATUS */
 572
 573         return ret;
 574 }
 575
 576 static int disk_jmicron_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* _data, size_t *_len) {
 577         uint8_t *bytes = cmd_data;
 578         uint8_t cdb[12];
 579         uint8_t sense[32];
 580         uint8_t port;
 581         int ret;
 582         SkBool is_smart_status = FALSE;
 583         void *data = _data;
 584         size_t len = _len ? *_len : 0;
 585         uint8_t smart_status = 0;
 586
 587         static const int direction_map[] = {
 588                 [SK_DIRECTION_NONE] = SG_DXFER_NONE,
 589                 [SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
 590                 [SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
 591         };
 592
 593         assert(d->type == SK_DISK_TYPE_JMICRON);
 594
 595         /* JMicron specific SCSI ATA pass-thru. Inspired by smartmonutils' support for these bridges */
 596
 597         memset(cdb, 0, sizeof(cdb));
 598
 599         cdb[0] = 0xdf; /* operation code */
 600         cdb[1] = 0x10;
 601         cdb[2] = 0x00;
 602         cdb[3] = 0x00; /* size HI */
 603         cdb[4] = sizeof(port); /* size LO */
 604         cdb[5] = 0x00;
 605         cdb[6] = 0x72; /* register address HI */
 606         cdb[7] = 0x0f; /* register address LO */
 607         cdb[8] = 0x00;
 608         cdb[9] = 0x00;
 609         cdb[10] = 0x00;
 610         cdb[11] = 0xfd;
 611
 612         memset(sense, 0, sizeof(sense));
 613
 614         if ((ret = sg_io(d->fd, SG_DXFER_FROM_DEV, cdb, sizeof(cdb), &port, sizeof(port), sense, sizeof(sense))) < 0)
 615                 return ret;
 616
 617         /* Port & 0x04 is port #0, Port & 0x40 is port #1 */
 618         if (!(port & 0x44))
 619                 return -EIO;
 620
 621         cdb[0] = 0xdf; /* OPERATION CODE: 12 byte pass through */
 622
 623         if (command == SK_ATA_COMMAND_SMART && bytes[1] == SK_SMART_COMMAND_RETURN_STATUS) {
 624                 /* We need to rewrite the SMART status request */
 625                 is_smart_status = TRUE;
 626                 direction = SK_DIRECTION_IN;
 627                 data = &smart_status;
 628                 len = sizeof(smart_status);
 629                 cdb[1] = 0x10;
 630         } else if (direction == SK_DIRECTION_NONE)
 631                 cdb[1] = 0x10;
 632         else if (direction == SK_DIRECTION_IN)
 633                 cdb[1] = 0x10;
 634         else if (direction == SK_DIRECTION_OUT)
 635                 cdb[1] = 0x00;
 636
 637         cdb[2] = 0x00;
 638
 639         cdb[3] = (uint8_t) (len >> 8);
 640         cdb[4] = (uint8_t) (len & 0xFF);
 641
 642         cdb[5] = bytes[1]; /* FEATURES */
 643         cdb[6] = bytes[3]; /* SECTORS */
 644
 645         cdb[7] = bytes[9]; /* LBA LOW */
 646         cdb[8] = bytes[8]; /* LBA MID */
 647         cdb[9] = bytes[7]; /* LBA HIGH */
 648
 649         cdb[10] = bytes[10] | ((port & 0x04) ? 0xA0 : 0xB0); /* SELECT */
 650         cdb[11] = (uint8_t) command;
 651
 652         memset(sense, 0, sizeof(sense));
 653
 654         if ((ret = sg_io(d->fd, direction_map[direction], cdb, sizeof(cdb), data, len, sense, sizeof(sense))) < 0)
 655                 return ret;
 656
 657         memset(bytes, 0, 12);
 658
 659         if (is_smart_status) {
 660                 if (smart_status == 0x01 || smart_status == 0xc2) {
 661                         bytes[7] = 0xc2; /* LBA HIGH */
 662                         bytes[8] = 0x4f; /* LBA MID */
 663                 } else if (smart_status == 0x00 || smart_status == 0x2c) {
 664                         bytes[7] = 0x2c; /* LBA HIGH */
 665                         bytes[8] = 0xf4; /* LBA MID */
 666                 } else
 667                         return -EIO;
 668         } else {
 669                 uint8_t regbuf[16];
 670
 671                 cdb[0] = 0xdf; /* operation code */
 672                 cdb[1] = 0x10;
 673                 cdb[2] = 0x00;
 674                 cdb[3] = 0x00; /* size HI */
 675                 cdb[4] = sizeof(regbuf); /* size LO */
 676                 cdb[5] = 0x00;
 677                 cdb[6] = (port & 0x04) ? 0x80 : 0x90; /* register address HI */
 678                 cdb[7] = 0x00; /* register address LO */
 679                 cdb[8] = 0x00;
 680                 cdb[9] = 0x00;
 681                 cdb[10] = 0x00;
 682                 cdb[11] = 0xfd;
 683
 684                 if ((ret = sg_io(d->fd, SG_DXFER_FROM_DEV, cdb, sizeof(cdb), regbuf, sizeof(regbuf), sense, sizeof(sense))) < 0)
 685                         return ret;
 686
 687                 bytes[2] = regbuf[14]; /* STATUS */
 688                 bytes[3] = regbuf[0]; /* SECTORS */
 689                 bytes[9] = regbuf[6]; /* LBA LOW */
 690                 bytes[8] = regbuf[4]; /* LBA MID */
 691                 bytes[7] = regbuf[10]; /* LBA HIGH */
 692                 bytes[10] = regbuf[9]; /* SELECT */
 693                 bytes[11] = regbuf[13]; /* ERROR */
 694         }
 695
 696         return ret;
 697 }
 698
 699 static int disk_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
 700
 701         static int (* const disk_command_table[_SK_DISK_TYPE_MAX]) (SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) = {
 702                 [SK_DISK_TYPE_LINUX_IDE] = disk_linux_ide_command,
 703                 [SK_DISK_TYPE_ATA_PASSTHROUGH_12] = disk_passthrough_12_command,
 704                 [SK_DISK_TYPE_ATA_PASSTHROUGH_16] = disk_passthrough_16_command,
 705                 [SK_DISK_TYPE_SUNPLUS] = disk_sunplus_command,
 706                 [SK_DISK_TYPE_JMICRON] = disk_jmicron_command,
 707                 [SK_DISK_TYPE_BLOB] = NULL,
 708                 [SK_DISK_TYPE_AUTO] = NULL,
 709                 [SK_DISK_TYPE_NONE] = NULL
 710         };
 711
 712         assert(d);
 713         assert(d->type <= _SK_DISK_TYPE_MAX);
 714         assert(direction <= _SK_DIRECTION_MAX);
 715
 716         assert(direction == SK_DIRECTION_NONE || (data && len && *len > 0));
 717         assert(direction != SK_DIRECTION_NONE || (!data && !len));
 718
 719         if (!disk_command_table[d->type]) {
 720                 errno = -ENOTSUP;
 721                 return -1;
 722         }
 723
 724         return disk_command_table[d->type](d, command, direction, cmd_data, data, len);
 725 }
 726
 727 static int disk_identify_device(SkDisk *d) {
 728         uint16_t cmd[6];
 729         int ret;
 730         size_t len = 512;
 731         const uint8_t *p;
 732
 733         if (d->type == SK_DISK_TYPE_BLOB)
 734                 return 0;
 735
 736         memset(d->identify, 0, len);
 737         memset(cmd, 0, sizeof(cmd));
 738
 739         cmd[1] = htons(1);
 740
 741         if ((ret = disk_command(d, SK_ATA_COMMAND_IDENTIFY_DEVICE, SK_DIRECTION_IN, cmd, d->identify, &len)) < 0)
 742                 return ret;
 743
 744         if (len != 512) {
 745                 errno = EIO;
 746                 return -1;
 747         }
 748
 749         /* Check if IDENTIFY data is all NULs */
 750         for (p = d->identify; p < (const uint8_t*) d->identify+len; p++)
 751                 if (*p) {
 752                         p = NULL;
 753                         break;
 754                 }
 755
 756         if (p) {
 757                 errno = EIO;
 758                 return -1;
 759         }
 760
 761         d->identify_valid = TRUE;
 762
 763         return 0;
 764 }
 765
 766 int sk_disk_check_sleep_mode(SkDisk *d, SkBool *awake) {
 767         int ret;
 768         uint16_t cmd[6];
 769         uint8_t status;
 770
 771         if (!d->identify_valid) {
 772                 errno = ENOTSUP;
 773                 return -1;
 774         }
 775
 776         if (d->type == SK_DISK_TYPE_BLOB) {
 777                 errno = ENOTSUP;
 778                 return -1;
 779         }
 780
 781         memset(cmd, 0, sizeof(cmd));
 782
 783         if ((ret = disk_command(d, SK_ATA_COMMAND_CHECK_POWER_MODE, SK_DIRECTION_NONE, cmd, NULL, 0)) < 0)
 784                 return ret;
 785
 786         if (cmd[0] != 0 || (ntohs(cmd[5]) & 1) != 0) {
 787                 errno = EIO;
 788                 return -1;
 789         }
 790
 791         status = ntohs(cmd[1]) & 0xFF;
 792         *awake = status == 0xFF || status == 0x80; /* idle and active/idle is considered awake */
 793
 794         return 0;
 795 }
 796
 797 static int disk_smart_enable(SkDisk *d, SkBool b) {
 798         uint16_t cmd[6];
 799
 800         if (!disk_smart_is_available(d)) {
 801                 errno = ENOTSUP;
 802                 return -1;
 803         }
 804
 805         if (d->type == SK_DISK_TYPE_BLOB) {
 806                 errno = ENOTSUP;
 807                 return -1;
 808         }
 809
 810         memset(cmd, 0, sizeof(cmd));
 811
 812         cmd[0] = htons(b ? SK_SMART_COMMAND_ENABLE_OPERATIONS : SK_SMART_COMMAND_DISABLE_OPERATIONS);
 813         cmd[2] = htons(0x0000U);
 814         cmd[3] = htons(0x00C2U);
 815         cmd[4] = htons(0x4F00U);
 816
 817         return disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_NONE, cmd, NULL, 0);
 818 }
 819
 820 int sk_disk_smart_read_data(SkDisk *d) {
 821         uint16_t cmd[6];
 822         int ret;
 823         size_t len = 512;
 824
 825         if (init_smart(d) < 0)
 826                 return -1;
 827
 828         if (!disk_smart_is_available(d)) {
 829                 errno = ENOTSUP;
 830                 return -1;
 831         }
 832
 833         if (d->type == SK_DISK_TYPE_BLOB)
 834                 return 0;
 835
 836         memset(cmd, 0, sizeof(cmd));
 837
 838         cmd[0] = htons(SK_SMART_COMMAND_READ_DATA);
 839         cmd[1] = htons(1);
 840         cmd[2] = htons(0x0000U);
 841         cmd[3] = htons(0x00C2U);
 842         cmd[4] = htons(0x4F00U);
 843
 844         if ((ret = disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_IN, cmd, d->smart_data, &len)) < 0)
 845                 return ret;
 846
 847         d->smart_data_valid = TRUE;
 848
 849         return ret;
 850 }
 851
 852 static int disk_smart_read_thresholds(SkDisk *d) {
 853         uint16_t cmd[6];
 854         int ret;
 855         size_t len = 512;
 856
 857         if (!disk_smart_is_available(d)) {
 858                 errno = ENOTSUP;
 859                 return -1;
 860         }
 861
 862         if (d->type == SK_DISK_TYPE_BLOB)
 863                 return 0;
 864
 865         memset(cmd, 0, sizeof(cmd));
 866
 867         cmd[0] = htons(SK_SMART_COMMAND_READ_THRESHOLDS);
 868         cmd[1] = htons(1);
 869         cmd[2] = htons(0x0000U);
 870         cmd[3] = htons(0x00C2U);
 871         cmd[4] = htons(0x4F00U);
 872
 873         if ((ret = disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_IN, cmd, d->smart_thresholds, &len)) < 0)
 874                 return ret;
 875
 876         d->smart_thresholds_valid = TRUE;
 877
 878         return ret;
 879 }
 880
 881 int sk_disk_smart_status(SkDisk *d, SkBool *good) {
 882         uint16_t cmd[6];
 883         int ret;
 884
 885         if (init_smart(d) < 0)
 886                 return -1;
 887
 888         if (!disk_smart_is_available(d)) {
 889                 errno = ENOTSUP;
 890                 return -1;
 891         }
 892
 893         if (d->type == SK_DISK_TYPE_BLOB) {
 894
 895                 if (d->blob_smart_status_valid) {
 896                         *good = d->blob_smart_status;
 897                         return 0;
 898                 }
 899
 900                 errno = ENXIO;
 901                 return -1;
 902         }
 903
 904         memset(cmd, 0, sizeof(cmd));
 905
 906         cmd[0] = htons(SK_SMART_COMMAND_RETURN_STATUS);
 907         cmd[1] = htons(0x0000U);
 908         cmd[3] = htons(0x00C2U);
 909         cmd[4] = htons(0x4F00U);
 910
 911         if ((ret = disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_NONE, cmd, NULL, 0)) < 0)
 912                 return ret;
 913
 914         /* SAT/USB bridges truncate packets, so we only check for 4F,
 915          * not for 2C on those */
 916         if ((d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_12 || cmd[3] == htons(0x00C2U)) &&
 917             cmd[4] == htons(0x4F00U))
 918                 *good = TRUE;
 919         else if ((d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_12 || cmd[3] == htons(0x002CU)) &&
 920                  cmd[4] == htons(0xF400U))
 921                 *good = FALSE;
 922         else {
 923                 errno = EIO;
 924                 return -1;
 925         }
 926
 927         return ret;
 928 }
 929
 930 int sk_disk_smart_self_test(SkDisk *d, SkSmartSelfTest test) {
 931         uint16_t cmd[6];
 932         int ret;
 933
 934         if (init_smart(d) < 0)
 935                 return -1;
 936
 937         if (!disk_smart_is_available(d)) {
 938                 errno = ENOTSUP;
 939                 return -1;
 940         }
 941
 942         if (d->type == SK_DISK_TYPE_BLOB) {
 943                 errno = ENOTSUP;
 944                 return -1;
 945         }
 946
 947         if (!d->smart_data_valid)
 948                 if ((ret = sk_disk_smart_read_data(d)) < 0)
 949                         return -1;
 950
 951         assert(d->smart_data_valid);
 952
 953         if (test != SK_SMART_SELF_TEST_SHORT &&
 954             test != SK_SMART_SELF_TEST_EXTENDED &&
 955             test != SK_SMART_SELF_TEST_CONVEYANCE &&
 956             test != SK_SMART_SELF_TEST_ABORT) {
 957                 errno = EINVAL;
 958                 return -1;
 959         }
 960
 961         if (!disk_smart_is_start_test_available(d)
 962             || (test == SK_SMART_SELF_TEST_ABORT && !disk_smart_is_abort_test_available(d))
 963             || ((test == SK_SMART_SELF_TEST_SHORT || test == SK_SMART_SELF_TEST_EXTENDED) && !disk_smart_is_short_and_extended_test_available(d))
 964             || (test == SK_SMART_SELF_TEST_CONVEYANCE && !disk_smart_is_conveyance_test_available(d))) {
 965                 errno = ENOTSUP;
 966                 return -1;
 967         }
 968
 969         if (test == SK_SMART_SELF_TEST_ABORT &&
 970             !disk_smart_is_abort_test_available(d)) {
 971                 errno = ENOTSUP;
 972                 return -1;
 973         }
 974
 975         memset(cmd, 0, sizeof(cmd));
 976
 977         cmd[0] = htons(SK_SMART_COMMAND_EXECUTE_OFFLINE_IMMEDIATE);
 978         cmd[2] = htons(0x0000U);
 979         cmd[3] = htons(0x00C2U);
 980         cmd[4] = htons(0x4F00U | (uint16_t) test);
 981
 982         return disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_NONE, cmd, NULL, NULL);
 983 }
 984
 985 static void swap_strings(char *s, size_t len) {
 986         assert((len & 1) == 0);
 987
 988         for (; len > 0; s += 2, len -= 2) {
 989                 char t;
 990                 t = s[0];
 991                 s[0] = s[1];
 992                 s[1] = t;
 993         }
 994 }
 995
 996 static void clean_strings(char *s) {
 997         char *e;
 998
 999         for (e = s; *e; e++)
1000                 if (*e < ' ' || *e >= 127)
1001                         *e = ' ';
1002 }
1003
1004 static void drop_spaces(char *s) {
1005         char *d = s;
1006         SkBool prev_space = FALSE;
1007
1008         s += strspn(s, " ");
1009
1010         for (;*s; s++) {
1011
1012                 if (prev_space) {
1013                         if (*s != ' ') {
1014                                 prev_space = FALSE;
1015                                 *(d++) = ' ';
1016                                 *(d++) = *s;
1017                         }
1018                 } else {
1019                         if (*s == ' ')
1020                                 prev_space = TRUE;
1021                         else
1022                                 *(d++) = *s;
1023                 }
1024         }
1025
1026         *d = 0;
1027 }
1028
1029 static void read_string(char *d, uint8_t *s, size_t len) {
1030         memcpy(d, s, len);
1031         d[len] = 0;
1032         swap_strings(d, len);
1033         clean_strings(d);
1034         drop_spaces(d);
1035 }
1036
1037 int sk_disk_identify_parse(SkDisk *d, const SkIdentifyParsedData **ipd) {
1038         assert(d);
1039         assert(ipd);
1040
1041         if (!d->identify_valid) {
1042                 errno = ENOENT;
1043                 return -1;
1044         }
1045
1046         read_string(d->identify_parsed_data.serial, d->identify+20, 20);
1047         read_string(d->identify_parsed_data.firmware, d->identify+46, 8);
1048         read_string(d->identify_parsed_data.model, d->identify+54, 40);
1049
1050         *ipd = &d->identify_parsed_data;
1051
1052         return 0;
1053 }
1054
1055 int sk_disk_smart_is_available(SkDisk *d, SkBool *b) {
1056         assert(d);
1057         assert(b);
1058
1059         if (!d->identify_valid) {
1060                 errno = ENOTSUP;
1061                 return -1;
1062         }
1063
1064         *b = disk_smart_is_available(d);
1065         return 0;
1066 }
1067
1068 int sk_disk_identify_is_available(SkDisk *d, SkBool *b) {
1069         assert(d);
1070         assert(b);
1071
1072         *b = d->identify_valid;
1073         return 0;
1074 }
1075
1076 const char *sk_smart_offline_data_collection_status_to_string(SkSmartOfflineDataCollectionStatus status) {
1077
1078         /* %STRINGPOOLSTART% */
1079         static const char* const map[] = {
1080                 [SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_NEVER] = "Off-line data collection activity was never started.",
1081                 [SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_SUCCESS] = "Off-line data collection activity was completed without error.",
1082                 [SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_INPROGRESS] = "Off-line activity in progress.",
1083                 [SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_SUSPENDED] = "Off-line data collection activity was suspended by an interrupting command from host.",
1084                 [SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_ABORTED] = "Off-line data collection activity was aborted by an interrupting command from host.",
1085                 [SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_FATAL] = "Off-line data collection activity was aborted by the device with a fatal error.",
1086                 [SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_UNKNOWN] = "Unknown status"
1087         };
1088         /* %STRINGPOOLSTOP% */
1089
1090         if (status >= _SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_MAX)
1091                 return NULL;
1092
1093         return _P(map[status]);
1094 }
1095
1096 const char *sk_smart_self_test_execution_status_to_string(SkSmartSelfTestExecutionStatus status) {
1097
1098         /* %STRINGPOOLSTART% */
1099         static const char* const map[] = {
1100                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_SUCCESS_OR_NEVER] = "The previous self-test routine completed without error or no self-test has ever been run.",
1101                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_ABORTED] = "The self-test routine was aborted by the host.",
1102                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_INTERRUPTED] = "The self-test routine was interrupted by the host with a hardware or software reset.",
1103                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_FATAL] = "A fatal error or unknown test error occurred while the device was executing its self-test routine and the device was unable to complete the self-test routine.",
1104                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_ERROR_UNKNOWN] = "The previous self-test completed having a test element that failed and the test element that failed.",
1105                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_ERROR_ELECTRICAL] = "The previous self-test completed having the electrical element of the test failed.",
1106                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_ERROR_SERVO] = "The previous self-test completed having the servo (and/or seek) test element of the test failed.",
1107                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_ERROR_READ] = "The previous self-test completed having the read element of the test failed.",
1108                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_ERROR_HANDLING] = "The previous self-test completed having a test element that failed and the device is suspected of having handling damage.",
1109                 [SK_SMART_SELF_TEST_EXECUTION_STATUS_INPROGRESS] = "Self-test routine in progress"
1110         };
1111         /* %STRINGPOOLSTOP% */
1112
1113         if (status >= _SK_SMART_SELF_TEST_EXECUTION_STATUS_MAX)
1114                 return NULL;
1115
1116         return _P(map[status]);
1117 }
1118
1119 const char* sk_smart_self_test_to_string(SkSmartSelfTest test) {
1120
1121         switch (test) {
1122                 case SK_SMART_SELF_TEST_SHORT:
1123                         return "short";
1124                 case SK_SMART_SELF_TEST_EXTENDED:
1125                         return "extended";
1126                 case SK_SMART_SELF_TEST_CONVEYANCE:
1127                         return "conveyance";
1128                 case SK_SMART_SELF_TEST_ABORT:
1129                         return "abort";
1130         }
1131
1132         return NULL;
1133 }
1134
1135 SkBool sk_smart_self_test_available(const SkSmartParsedData *d, SkSmartSelfTest test) {
1136         assert(d);
1137
1138         if (!d->start_test_available)
1139                 return FALSE;
1140
1141         switch (test) {
1142                 case SK_SMART_SELF_TEST_SHORT:
1143                 case SK_SMART_SELF_TEST_EXTENDED:
1144                         return d->short_and_extended_test_available;
1145                 case SK_SMART_SELF_TEST_CONVEYANCE:
1146                         return d->conveyance_test_available;
1147                 case SK_SMART_SELF_TEST_ABORT:
1148                         return d->abort_test_available;
1149                 default:
1150                         return FALSE;
1151         }
1152 }
1153
1154 unsigned sk_smart_self_test_polling_minutes(const SkSmartParsedData *d, SkSmartSelfTest test) {
1155         assert(d);
1156
1157         if (!sk_smart_self_test_available(d, test))
1158                 return 0;
1159
1160         switch (test) {
1161                 case SK_SMART_SELF_TEST_SHORT:
1162                         return d->short_test_polling_minutes;
1163                 case SK_SMART_SELF_TEST_EXTENDED:
1164                         return d->extended_test_polling_minutes;
1165                 case SK_SMART_SELF_TEST_CONVEYANCE:
1166                         return d->conveyance_test_polling_minutes;
1167                 default:
1168                         return 0;
1169         }
1170 }
1171
1172 static void make_pretty(SkSmartAttributeParsedData *a) {
1173         uint64_t fourtyeight;
1174
1175         if (!a->name)
1176                 return;
1177
1178         if (a->pretty_unit == SK_SMART_ATTRIBUTE_UNIT_UNKNOWN)
1179                 return;
1180
1181         fourtyeight =
1182                 ((uint64_t) a->raw[0]) |
1183                 (((uint64_t) a->raw[1]) << 8) |
1184                 (((uint64_t) a->raw[2]) << 16) |
1185                 (((uint64_t) a->raw[3]) << 24) |
1186                 (((uint64_t) a->raw[4]) << 32) |
1187                 (((uint64_t) a->raw[5]) << 40);
1188
1189         if (!strcmp(a->name, "spin-up-time"))
1190                 a->pretty_value = fourtyeight & 0xFFFF;
1191         else if (!strcmp(a->name, "airflow-temperature-celsius") ||
1192                  !strcmp(a->name, "temperature-celsius") ||
1193                  !strcmp(a->name, "temperature-celsius-2"))
1194                 a->pretty_value = (fourtyeight & 0xFFFF)*1000 + 273150;
1195         else if (!strcmp(a->name, "temperature-centi-celsius"))
1196                 a->pretty_value = (fourtyeight & 0xFFFF)*100 + 273150;
1197         else if (!strcmp(a->name, "power-on-minutes"))
1198                 a->pretty_value = fourtyeight * 60 * 1000;
1199         else if (!strcmp(a->name, "power-on-seconds") ||
1200                  !strcmp(a->name, "power-on-seconds-2"))
1201                 a->pretty_value = fourtyeight * 1000;
1202         else if (!strcmp(a->name, "power-on-half-minutes"))
1203                 a->pretty_value = fourtyeight * 30 * 1000;
1204         else if (!strcmp(a->name, "power-on-hours") ||
1205                  !strcmp(a->name, "loaded-hours") ||
1206                  !strcmp(a->name, "head-flying-hours"))
1207                 a->pretty_value = (fourtyeight & 0xFFFFFFFFU) * 60 * 60 * 1000;
1208         else if (!strcmp(a->name, "reallocated-sector-count") ||
1209                  !strcmp(a->name, "current-pending-sector"))
1210                 a->pretty_value = fourtyeight & 0xFFFFFFFFU;
1211         else if (!strcmp(a->name, "endurance-remaining") ||
1212                  !strcmp(a->name, "available-reserved-space"))
1213                 a->pretty_value = a->current_value;
1214         else if (!strcmp(a->name, "total-lbas-written") ||
1215                  !strcmp(a->name, "total-lbas-read"))
1216                 a->pretty_value = fourtyeight * 65536LLU * 512LLU / 1000000LLU;
1217         else if (!strcmp(a->name, "timed-workload-media-wear") ||
1218                  !strcmp(a->name, "timed-workload-host-reads"))
1219                 a->pretty_value = (double)fourtyeight / 1024LLU;
1220         else if (!strcmp(a->name, "workload-timer"))
1221                 a->pretty_value = fourtyeight * 60 * 1000;
1222         else
1223                 a->pretty_value = fourtyeight;
1224 }
1225
1226 typedef void (*SkSmartAttributeVerify)(SkDisk *d, SkSmartAttributeParsedData *a);
1227
1228 typedef struct SkSmartAttributeInfo {
1229         const char *name;
1230         SkSmartAttributeUnit unit;
1231         SkSmartAttributeVerify verify;
1232 } SkSmartAttributeInfo;
1233
1234 static void verify_temperature(SkDisk *d, SkSmartAttributeParsedData *a) {
1235         assert(a);
1236         assert(a->pretty_unit == SK_SMART_ATTRIBUTE_UNIT_MKELVIN);
1237
1238         if (a->pretty_value < SK_MKELVIN_VALID_MIN ||
1239             a->pretty_value > SK_MKELVIN_VALID_MAX) {
1240                 a->pretty_unit = SK_SMART_ATTRIBUTE_UNIT_UNKNOWN;
1241                 d->attribute_verification_bad = TRUE;
1242         }
1243 }
1244
1245 static void verify_short_time(SkDisk *d, SkSmartAttributeParsedData *a) {
1246         assert(a);
1247         assert(a->pretty_unit == SK_SMART_ATTRIBUTE_UNIT_MSECONDS);
1248
1249         if (a->pretty_value < SK_MSECOND_VALID_MIN ||
1250             a->pretty_value > SK_MSECOND_VALID_SHORT_MAX) {
1251                 a->pretty_unit = SK_SMART_ATTRIBUTE_UNIT_UNKNOWN;
1252                 d->attribute_verification_bad = TRUE;
1253         }
1254 }
1255
1256 static void verify_long_time(SkDisk *d, SkSmartAttributeParsedData *a) {
1257         assert(a);
1258         assert(a->pretty_unit == SK_SMART_ATTRIBUTE_UNIT_MSECONDS);
1259
1260         if (a->pretty_value < SK_MSECOND_VALID_MIN ||
1261             a->pretty_value > SK_MSECOND_VALID_LONG_MAX) {
1262                 a->pretty_unit = SK_SMART_ATTRIBUTE_UNIT_UNKNOWN;
1263                 d->attribute_verification_bad = TRUE;
1264         }
1265 }
1266
1267 static void verify_sectors(SkDisk *d, SkSmartAttributeParsedData *a) {
1268         uint64_t max_sectors;
1269
1270         assert(d);
1271         assert(a);
1272         assert(a->pretty_unit == SK_SMART_ATTRIBUTE_UNIT_SECTORS);
1273
1274         max_sectors = d->size / 512ULL;
1275
1276         if (max_sectors > 0 && a->pretty_value > max_sectors) {
1277                 a->pretty_value = SK_SMART_ATTRIBUTE_UNIT_UNKNOWN;
1278                 d->attribute_verification_bad = TRUE;
1279         } else {
1280                 if ((!strcmp(a->name, "reallocated-sector-count") ||
1281                      !strcmp(a->name, "current-pending-sector")) &&
1282                     a->pretty_value > 0)
1283                         a->warn = TRUE;
1284         }
1285 }
1286
1287 /* This data is stolen from smartmontools */
1288
1289 /* %STRINGPOOLSTART% */
1290 static const SkSmartAttributeInfo const attribute_info[256] = {
1291         [1]   = { "raw-read-error-rate",         SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1292         [2]   = { "throughput-performance",      SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1293         [3]   = { "spin-up-time",                SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_short_time },
1294         [4]   = { "start-stop-count",            SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1295         [5]   = { "reallocated-sector-count",    SK_SMART_ATTRIBUTE_UNIT_SECTORS,  verify_sectors },
1296         [6]   = { "read-channel-margin",         SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1297         [7]   = { "seek-error-rate",             SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1298         [8]   = { "seek-time-performance",       SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1299         [9]   = { "power-on-hours",              SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_long_time },
1300         [10]  = { "spin-retry-count",            SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1301         [11]  = { "calibration-retry-count",     SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1302         [12]  = { "power-cycle-count",           SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1303         [13]  = { "read-soft-error-rate",        SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1304         [170] = { "available-reserved-space",    SK_SMART_ATTRIBUTE_UNIT_PERCENT,  NULL },
1305         [171] = { "program-fail-count",          SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1306         [172] = { "erase-fail-count",            SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1307         [184] = { "end-to-end-error",            SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1308         [187] = { "reported-uncorrect",          SK_SMART_ATTRIBUTE_UNIT_SECTORS,  verify_sectors },
1309         [188] = { "command-timeout",             SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1310         [189] = { "high-fly-writes",             SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1311         [190] = { "airflow-temperature-celsius", SK_SMART_ATTRIBUTE_UNIT_MKELVIN,  verify_temperature },
1312         [191] = { "g-sense-error-rate",          SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1313         [192] = { "power-off-retract-count",     SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1314         [193] = { "load-cycle-count",            SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1315         [194] = { "temperature-celsius-2",       SK_SMART_ATTRIBUTE_UNIT_MKELVIN,  verify_temperature },
1316         [195] = { "hardware-ecc-recovered",      SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1317         [196] = { "reallocated-event-count",     SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1318         [197] = { "current-pending-sector",      SK_SMART_ATTRIBUTE_UNIT_SECTORS,  verify_sectors },
1319         [198] = { "offline-uncorrectable",       SK_SMART_ATTRIBUTE_UNIT_SECTORS,  verify_sectors },
1320         [199] = { "udma-crc-error-count",        SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1321         [200] = { "multi-zone-error-rate",       SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1322         [201] = { "soft-read-error-rate",        SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1323         [202] = { "ta-increase-count",           SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1324         [203] = { "run-out-cancel",              SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1325         [204] = { "shock-count-write-open",      SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1326         [205] = { "shock-rate-write-open",       SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1327         [206] = { "flying-height",               SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1328         [207] = { "spin-high-current",           SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1329         [208] = { "spin-buzz",                   SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1330         [209] = { "offline-seek-performance",    SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1331         [220] = { "disk-shift",                  SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1332         [221] = { "g-sense-error-rate-2",        SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1333         [222] = { "loaded-hours",                SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_long_time },
1334         [223] = { "load-retry-count",            SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1335         [224] = { "load-friction",               SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1336         [225] = { "load-cycle-count-2",          SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1337         [226] = { "load-in-time",                SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_short_time },
1338         [227] = { "torq-amp-count",              SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1339         [228] = { "power-off-retract-count-2",   SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL },
1340         [230] = { "head-amplitude",              SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1341         [231] = { "temperature-celsius",         SK_SMART_ATTRIBUTE_UNIT_MKELVIN,  verify_temperature },
1342
1343         /* http://www.adtron.com/pdf/SMART_for_XceedLite_SATA_RevA.pdf */
1344         [232] = { "endurance-remaining",         SK_SMART_ATTRIBUTE_UNIT_PERCENT,  NULL },
1345         [233] = { "power-on-seconds-2",          SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1346         [234] = { "uncorrectable-ecc-count",     SK_SMART_ATTRIBUTE_UNIT_SECTORS,  NULL },
1347         [235] = { "good-block-rate",             SK_SMART_ATTRIBUTE_UNIT_UNKNOWN,  NULL },
1348
1349         [240] = { "head-flying-hours",           SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_long_time },
1350         [241] = { "total-lbas-written",          SK_SMART_ATTRIBUTE_UNIT_MB,  NULL },
1351         [242] = { "total-lbas-read",             SK_SMART_ATTRIBUTE_UNIT_MB,  NULL },
1352         [250] = { "read-error-retry-rate",       SK_SMART_ATTRIBUTE_UNIT_NONE,     NULL }
1353 };
1354 /* %STRINGPOOLSTOP% */
1355
1356 typedef enum SkSmartQuirk {
1357         SK_SMART_QUIRK_9_POWERONMINUTES            = 0x000001,
1358         SK_SMART_QUIRK_9_POWERONSECONDS            = 0x000002,
1359         SK_SMART_QUIRK_9_POWERONHALFMINUTES        = 0x000004,
1360         SK_SMART_QUIRK_192_EMERGENCYRETRACTCYCLECT = 0x000008,
1361         SK_SMART_QUIRK_193_LOADUNLOAD              = 0x000010,
1362         SK_SMART_QUIRK_194_10XCELSIUS              = 0x000020,
1363         SK_SMART_QUIRK_194_UNKNOWN                 = 0x000040,
1364         SK_SMART_QUIRK_200_WRITEERRORCOUNT         = 0x000080,
1365         SK_SMART_QUIRK_201_DETECTEDTACOUNT         = 0x000100,
1366         SK_SMART_QUIRK_5_UNKNOWN                   = 0x000200,
1367         SK_SMART_QUIRK_9_UNKNOWN                   = 0x000400,
1368         SK_SMART_QUIRK_197_UNKNOWN                 = 0x000800,
1369         SK_SMART_QUIRK_198_UNKNOWN                 = 0x001000,
1370         SK_SMART_QUIRK_190_UNKNOWN                 = 0x002000,
1371         SK_SMART_QUIRK_232_AVAILABLERESERVEDSPACE  = 0x004000,
1372         SK_SMART_QUIRK_233_MEDIAWEAROUTINDICATOR   = 0x008000,
1373         SK_SMART_QUIRK_225_TOTALLBASWRITTEN        = 0x010000,
1374         SK_SMART_QUIRK_4_UNUSED                    = 0x020000,
1375         SK_SMART_QUIRK_226_TIMEWORKLOADMEDIAWEAR   = 0x040000,
1376         SK_SMART_QUIRK_227_TIMEWORKLOADHOSTREADS   = 0x080000,
1377         SK_SMART_QUIRK_228_WORKLOADTIMER           = 0x100000,
1378         SK_SMART_QUIRK_3_UNUSED                    = 0x200000
1379 } SkSmartQuirk;
1380
1381 /* %STRINGPOOLSTART% */
1382 static const char *quirk_name[] = {
1383         "9_POWERONMINUTES",
1384         "9_POWERONSECONDS",
1385         "9_POWERONHALFMINUTES",
1386         "192_EMERGENCYRETRACTCYCLECT",
1387         "193_LOADUNLOAD",
1388         "194_10XCELSIUS",
1389         "194_UNKNOWN",
1390         "200_WRITEERRORCOUNT",
1391         "201_DETECTEDTACOUNT",
1392         "5_UNKNOWN",
1393         "9_UNKNOWN",
1394         "197_UNKNOWN",
1395         "198_UNKNOWN",
1396         "190_UNKNOWN",
1397         "232_AVAILABLERESERVEDSPACE",
1398         NULL
1399 };
1400 /* %STRINGPOOLSTOP% */
1401
1402 typedef struct SkSmartQuirkDatabase {
1403         const char *model;
1404         const char *firmware;
1405         SkSmartQuirk quirk;
1406 } SkSmartQuirkDatabase;
1407
1408 static const SkSmartQuirkDatabase quirk_database[] = { {
1409
1410         /*** Fujitsu */
1411                 "^("
1412                 "FUJITSU MHY2120BH|"
1413                 "FUJITSU MHY2250BH"
1414                 ")$",
1415                 "^0085000B$", /* seems to be specific to this firmware */
1416                 SK_SMART_QUIRK_9_POWERONMINUTES|
1417                 SK_SMART_QUIRK_197_UNKNOWN|
1418                 SK_SMART_QUIRK_198_UNKNOWN
1419         }, {
1420                 "^FUJITSU MHR2040AT$",
1421                 NULL,
1422                 SK_SMART_QUIRK_9_POWERONSECONDS|
1423                 SK_SMART_QUIRK_192_EMERGENCYRETRACTCYCLECT|
1424                 SK_SMART_QUIRK_200_WRITEERRORCOUNT
1425         }, {
1426                 "^FUJITSU MHS20[6432]0AT(  .)?$",
1427                 NULL,
1428                 SK_SMART_QUIRK_9_POWERONSECONDS|
1429                 SK_SMART_QUIRK_192_EMERGENCYRETRACTCYCLECT|
1430                 SK_SMART_QUIRK_200_WRITEERRORCOUNT|
1431                 SK_SMART_QUIRK_201_DETECTEDTACOUNT
1432         }, {
1433                 "^("
1434                 "FUJITSU M1623TAU|"
1435                 "FUJITSU MHG2...ATU?.*|"
1436                 "FUJITSU MHH2...ATU?.*|"
1437                 "FUJITSU MHJ2...ATU?.*|"
1438                 "FUJITSU MHK2...ATU?.*|"
1439                 "FUJITSU MHL2300AT|"
1440                 "FUJITSU MHM2(20|15|10|06)0AT|"
1441                 "FUJITSU MHN2...AT|"
1442                 "FUJITSU MHR2020AT|"
1443                 "FUJITSU MHT2...(AH|AS|AT|BH)U?.*|"
1444                 "FUJITSU MHU2...ATU?.*|"
1445                 "FUJITSU MHV2...(AH|AS|AT|BH|BS|BT).*|"
1446                 "FUJITSU MP[A-G]3...A[HTEV]U?.*"
1447                 ")$",
1448                 NULL,
1449                 SK_SMART_QUIRK_9_POWERONSECONDS
1450         }, {
1451
1452         /*** Samsung ***/
1453                 "^("
1454                 "SAMSUNG SV4012H|"
1455                 "SAMSUNG SP(0451|08[0124]2|12[0145]3|16[0145]4)[CN]"
1456                 ")$",
1457                 NULL,
1458                 SK_SMART_QUIRK_9_POWERONHALFMINUTES
1459         }, {
1460                 "^("
1461                 "SAMSUNG SV0412H|"
1462                 "SAMSUNG SV1204H"
1463                 ")$",
1464                 NULL,
1465                 SK_SMART_QUIRK_9_POWERONHALFMINUTES|
1466                 SK_SMART_QUIRK_194_10XCELSIUS
1467         }, {
1468                 "^SAMSUNG SP40A2H$",
1469                 "^RR100-07$",
1470                 SK_SMART_QUIRK_9_POWERONHALFMINUTES
1471         }, {
1472                 "^SAMSUNG SP80A4H$",
1473                 "^RT100-06$",
1474                 SK_SMART_QUIRK_9_POWERONHALFMINUTES
1475         }, {
1476                 "^SAMSUNG SP8004H$",
1477                 "^QW100-61$",
1478                 SK_SMART_QUIRK_9_POWERONHALFMINUTES
1479         }, {
1480
1481         /*** Maxtor */
1482                 "^("
1483                 "Maxtor 2B0(0[468]|1[05]|20)H1|"
1484                 "Maxtor 4G(120J6|160J[68])|"
1485                 "Maxtor 4D0(20H1|40H2|60H3|80H4)"
1486                 ")$",
1487                 NULL,
1488                 SK_SMART_QUIRK_9_POWERONMINUTES|
1489                 SK_SMART_QUIRK_194_UNKNOWN
1490         }, {
1491                 "^("
1492                 "Maxtor 2F0[234]0[JL]0|"
1493                 "Maxtor 8(1280A2|2160A4|2560A4|3840A6|4000A6|5120A8)|"
1494                 "Maxtor 8(2160D2|3228D3|3240D3|4320D4|6480D6|8400D8|8455D8)|"
1495                 "Maxtor 9(0510D4|0576D4|0648D5|0720D5|0840D6|0845D6|0864D6|1008D7|1080D8|1152D8)|"
1496                 "Maxtor 9(1(360|350|202)D8|1190D7|10[12]0D6|0840D5|06[48]0D4|0510D3|1(350|202)E8|1010E6|0840E5|0640E4)|"
1497                 "Maxtor 9(0512D2|0680D3|0750D3|0913D4|1024D4|1360D6|1536D6|1792D7|2048D8)|"
1498                 "Maxtor 9(2732U8|2390U7|204[09]U6|1707U5|1366U4|1024U3|0845U3|0683U2)|"
1499                 "Maxtor 4(R0[68]0[JL]0|R1[26]0L0|A160J0|R120L4)|"
1500                 "Maxtor (91728D8|91512D7|91303D6|91080D5|90845D4|90645D3|90648D[34]|90432D2)|"
1501                 "Maxtor 9(0431U1|0641U2|0871U2|1301U3|1741U4)|"
1502                 "Maxtor (94091U8|93071U6|92561U5|92041U4|91731U4|91531U3|91361U3|91021U2|90841U2|90651U2)|"
1503                 "Maxtor (33073U4|32049U3|31536U2|30768U1|33073H4|32305H3|31536H2|30768H1)|"
1504                 "Maxtor (93652U8|92739U6|91826U4|91369U3|90913U2|90845U2|90435U1)|"
1505                 "Maxtor 9(0684U2|1024U2|1362U3|1536U3|2049U4|2562U5|3073U6|4098U8)|"
1506                 "Maxtor (54098[UH]8|53073[UH]6|52732[UH]6|52049[UH]4|51536[UH]3|51369[UH]3|51024[UH]2)|"
1507                 "Maxtor 3(1024H1|1535H2|2049H2|3073H3|4098H4)( B)?|"
1508                 "Maxtor 5(4610H6|4098H6|3073H4|2049H3|1536H2|1369H2|1023H2)|"
1509                 "Maxtor 9(1023U2|1536U2|2049U3|2305U3|3073U4|4610U6|6147U8)|"
1510                 "Maxtor 9(1023H2|1536H2|2049H3|2305H3|3073H4|4098H6|4610H6|6147H8)|"
1511                 "Maxtor 5T0(60H6|40H4|30H3|20H2|10H1)|"
1512                 "Maxtor (98196H8|96147H6)|"
1513                 "Maxtor 4W(100H6|080H6|060H4|040H3|030H2)|"
1514                 "Maxtor 6(E0[234]|K04)0L0|"
1515                 "Maxtor 6(B(30|25|20|16|12|10|08)0[MPRS]|L(080[MLP]|(100|120)[MP]|160[MP]|200[MPRS]|250[RS]|300[RS]))0|"
1516                 "Maxtor 6Y((060|080|120|160)L0|(060|080|120|160|200|250)P0|(060|080|120|160|200|250)M0)|"
1517                 "Maxtor 7Y250[PM]0|"
1518                 "Maxtor [45]A(25|30|32)0[JN]0|"
1519                 "Maxtor 7L(25|30)0[SR]0"
1520                 ")$",
1521                 NULL,
1522                 SK_SMART_QUIRK_9_POWERONMINUTES
1523         }, {
1524
1525
1526         /*** Hitachi */
1527                 "^("
1528                 "HITACHI_DK14FA-20B|"
1529                 "HITACHI_DK23..-..B?|"
1530                 "HITACHI_DK23FA-20J|HTA422020F9AT[JN]0|"
1531                 "HE[JN]4230[23]0F9AT00|"
1532                 "HTC4260[23]0G5CE00|HTC4260[56]0G8CE00"
1533                 ")$",
1534                 NULL,
1535                 SK_SMART_QUIRK_9_POWERONMINUTES|
1536                 SK_SMART_QUIRK_193_LOADUNLOAD
1537         }, {
1538                 "^HTS541010G9SA00$",
1539                 "^MBZOC60P$",
1540                 SK_SMART_QUIRK_5_UNKNOWN
1541         }, {
1542
1543         /*** Apple SSD (?) http://bugs.freedesktop.org/show_bug.cgi?id=24700
1544                            https://bugs.launchpad.net/ubuntu/+source/gnome-disk-utility/+bug/438136/comments/4 */
1545                 "^MCCOE64GEMPP$",
1546                 "^2.9.0[3-9]$",
1547                 SK_SMART_QUIRK_5_UNKNOWN|
1548                 SK_SMART_QUIRK_190_UNKNOWN
1549         }, {
1550
1551         /*** Intel */
1552                 "^INTEL SSDSA2CW[0-9]{3}G3$",
1553                 NULL,
1554                 SK_SMART_QUIRK_3_UNUSED|
1555                 SK_SMART_QUIRK_4_UNUSED|
1556                 SK_SMART_QUIRK_225_TOTALLBASWRITTEN|
1557                 SK_SMART_QUIRK_226_TIMEWORKLOADMEDIAWEAR|
1558                 SK_SMART_QUIRK_227_TIMEWORKLOADHOSTREADS|
1559                 SK_SMART_QUIRK_228_WORKLOADTIMER|
1560                 SK_SMART_QUIRK_232_AVAILABLERESERVEDSPACE|
1561                 SK_SMART_QUIRK_233_MEDIAWEAROUTINDICATOR
1562         }, {
1563                 NULL,
1564                 NULL,
1565                 0
1566         }
1567 };
1568
1569 static int match(const char*regex, const char *s, SkBool *result) {
1570         int k;
1571         regex_t re;
1572
1573         *result = FALSE;
1574
1575         if (regcomp(&re, regex, REG_EXTENDED|REG_NOSUB) != 0) {
1576                 errno = EINVAL;
1577                 return -1;
1578         }
1579
1580         if ((k = regexec(&re, s, 0, NULL, 0)) != 0) {
1581
1582                 if (k != REG_NOMATCH) {
1583                         regfree(&re);
1584                         errno = EINVAL;
1585                         return -1;
1586                 }
1587
1588         } else
1589                 *result = TRUE;
1590
1591         regfree(&re);
1592
1593         return 0;
1594 }
1595
1596 static int lookup_quirks(const char *model, const char *firmware, SkSmartQuirk *quirk) {
1597         int k;
1598         const SkSmartQuirkDatabase *db;
1599
1600         *quirk = 0;
1601
1602         for (db = quirk_database; db->model || db->firmware; db++) {
1603
1604                 if (db->model) {
1605                         SkBool matching = FALSE;
1606
1607                         if ((k = match(db->model, model, &matching)) < 0)
1608                                 return k;
1609
1610                         if (!matching)
1611                                 continue;
1612                 }
1613
1614                 if (db->firmware) {
1615                         SkBool matching = FALSE;
1616
1617                         if ((k = match(db->firmware, firmware, &matching)) < 0)
1618                                 return k;
1619
1620                         if (!matching)
1621                                 continue;
1622                 }
1623
1624                 *quirk = db->quirk;
1625                 return 0;
1626         }
1627
1628         return 0;
1629 }
1630
1631 static const SkSmartAttributeInfo *lookup_attribute(SkDisk *d, uint8_t id) {
1632         const SkIdentifyParsedData *ipd;
1633         SkSmartQuirk quirk = 0;
1634
1635         /* These are the complex ones */
1636         if (sk_disk_identify_parse(d, &ipd) < 0)
1637                 return NULL;
1638
1639         if (lookup_quirks(ipd->model, ipd->firmware, &quirk) < 0)
1640                 return NULL;
1641
1642         if (quirk) {
1643                 switch (id) {
1644                         case 3:
1645                                 /* %STRINGPOOLSTART% */
1646                                 if (quirk & SK_SMART_QUIRK_3_UNUSED) {
1647                                         static const SkSmartAttributeInfo a = {
1648                                                 "spin-up-time", SK_SMART_ATTRIBUTE_UNIT_UNKNOWN, NULL
1649                                         };
1650                                         return &a;
1651                                 }
1652                                 /* %STRINGPOOLSTOP% */
1653
1654                                 break;
1655
1656                         case 4:
1657                                 /* %STRINGPOOLSTART% */
1658                                 if (quirk & SK_SMART_QUIRK_4_UNUSED) {
1659                                         static const SkSmartAttributeInfo a = {
1660                                                 "start-stop-count", SK_SMART_ATTRIBUTE_UNIT_UNKNOWN, NULL
1661                                         };
1662                                         return &a;
1663                                 }
1664                                 /* %STRINGPOOLSTOP% */
1665
1666                                 break;
1667
1668                         case 5:
1669                                 if (quirk & SK_SMART_QUIRK_5_UNKNOWN)
1670                                         return NULL;
1671
1672                                 break;
1673
1674                         case 9:
1675                                 /* %STRINGPOOLSTART% */
1676                                 if (quirk & SK_SMART_QUIRK_9_POWERONMINUTES) {
1677                                         static const SkSmartAttributeInfo a = {
1678                                                 "power-on-minutes", SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_long_time
1679                                         };
1680                                         return &a;
1681
1682                                 } else if (quirk & SK_SMART_QUIRK_9_POWERONSECONDS) {
1683                                         static const SkSmartAttributeInfo a = {
1684                                                 "power-on-seconds", SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_long_time
1685                                         };
1686                                         return &a;
1687
1688                                 } else if (quirk & SK_SMART_QUIRK_9_POWERONHALFMINUTES) {
1689                                         static const SkSmartAttributeInfo a = {
1690                                                 "power-on-half-minutes", SK_SMART_ATTRIBUTE_UNIT_MSECONDS, verify_long_time
1691                                         };
1692                                         return &a;
1693                                 } else if (quirk & SK_SMART_QUIRK_9_UNKNOWN)
1694                                         return NULL;
1695                                 /* %STRINGPOOLSTOP% */
1696
1697                                 break;
1698
1699                         case 190:
1700                                 if (quirk & SK_SMART_QUIRK_190_UNKNOWN)
1701                                         return NULL;
1702
1703                                 break;
1704
1705                         case 192:
1706                                 /* %STRINGPOOLSTART% */
1707                                 if (quirk & SK_SMART_QUIRK_192_EMERGENCYRETRACTCYCLECT) {
1708                                         static const SkSmartAttributeInfo a = {
1709                                                 "emergency-retract-cycle-count", SK_SMART_ATTRIBUTE_UNIT_NONE, NULL
1710                                         };
1711                                         return &a;
1712                                 }
1713                                 /* %STRINGPOOLSTOP% */
1714
1715                                 break;
1716
1717                         case 194:
1718                                 /* %STRINGPOOLSTART% */
1719                                 if (quirk & SK_SMART_QUIRK_194_10XCELSIUS) {
1720                                         static const SkSmartAttributeInfo a = {
1721                                                 "temperature-centi-celsius", SK_SMART_ATTRIBUTE_UNIT_MKELVIN, verify_temperature
1722                                         };
1723                                         return &a;
1724                                 } else if (quirk & SK_SMART_QUIRK_194_UNKNOWN)
1725                                         return NULL;
1726                                 /* %STRINGPOOLSTOP% */
1727
1728                                 break;
1729
1730                         case 197:
1731                                 if (quirk & SK_SMART_QUIRK_197_UNKNOWN)
1732                                         return NULL;
1733
1734                                 break;
1735
1736                         case 198:
1737                                 if (quirk & SK_SMART_QUIRK_198_UNKNOWN)
1738                                         return NULL;
1739
1740                                 break;
1741
1742                         case 200:
1743                                 /* %STRINGPOOLSTART% */
1744                                 if (quirk & SK_SMART_QUIRK_200_WRITEERRORCOUNT) {
1745                                         static const SkSmartAttributeInfo a = {
1746                                                 "write-error-count", SK_SMART_ATTRIBUTE_UNIT_NONE, NULL
1747                                         };
1748                                         return &a;
1749                                 }
1750                                 /* %STRINGPOOLSTOP% */
1751
1752                                 break;
1753
1754                         case 201:
1755                                 /* %STRINGPOOLSTART% */
1756                                 if (quirk & SK_SMART_QUIRK_201_DETECTEDTACOUNT) {
1757                                         static const SkSmartAttributeInfo a = {
1758                                                 "detected-ta-count", SK_SMART_ATTRIBUTE_UNIT_NONE, NULL
1759                                         };
1760                                         return &a;
1761                                 }
1762                                 /* %STRINGPOOLSTOP% */
1763
1764                                 break;
1765
1766                         case 225:
1767                                 /* %STRINGPOOLSTART% */
1768                                 if (quirk & SK_SMART_QUIRK_225_TOTALLBASWRITTEN) {
1769                                         static const SkSmartAttributeInfo a = {
1770                                                 "total-lbas-written", SK_SMART_ATTRIBUTE_UNIT_MB, NULL
1771                                         };
1772                                         return &a;
1773                                 }
1774                                 /* %STRINGPOOLSTOP% */
1775
1776                                 break;
1777
1778                         case 226:
1779                                 /* %STRINGPOOLSTART% */
1780                                 if (quirk & SK_SMART_QUIRK_226_TIMEWORKLOADMEDIAWEAR) {
1781                                         static const SkSmartAttributeInfo a = {
1782                                                 "timed-workload-media-wear", SK_SMART_ATTRIBUTE_UNIT_SMALL_PERCENT, NULL
1783                                         };
1784                                         return &a;
1785                                 }
1786                                 /* %STRINGPOOLSTOP% */
1787
1788                                 break;
1789
1790                         case 227:
1791                                 /* %STRINGPOOLSTART% */
1792                                 if (quirk & SK_SMART_QUIRK_227_TIMEWORKLOADHOSTREADS) {
1793                                         static const SkSmartAttributeInfo a = {
1794                                                 "timed-workload-host-reads", SK_SMART_ATTRIBUTE_UNIT_SMALL_PERCENT, NULL
1795                                         };
1796                                         return &a;
1797                                 }
1798                                 /* %STRINGPOOLSTOP% */
1799
1800                                 break;
1801
1802                         case 228:
1803                                 /* %STRINGPOOLSTART% */
1804                                 if (quirk & SK_SMART_QUIRK_228_WORKLOADTIMER) {
1805                                         static const SkSmartAttributeInfo a = {
1806                                                 "workload-timer", SK_SMART_ATTRIBUTE_UNIT_MSECONDS, NULL
1807                                         };
1808                                         return &a;
1809                                 }
1810                                 /* %STRINGPOOLSTOP% */
1811
1812                                 break;
1813
1814                         case 232:
1815                                 /* %STRINGPOOLSTART% */
1816                                 if (quirk & SK_SMART_QUIRK_232_AVAILABLERESERVEDSPACE) {
1817                                         static const SkSmartAttributeInfo a = {
1818                                                 "available-reserved-space", SK_SMART_ATTRIBUTE_UNIT_PERCENT, NULL
1819                                         };
1820                                         return &a;
1821                                 }
1822                                 /* %STRINGPOOLSTOP% */
1823                                 break;
1824
1825                         case 233:
1826                                 /* %STRINGPOOLSTART% */
1827                                 if (quirk & SK_SMART_QUIRK_233_MEDIAWEAROUTINDICATOR) {
1828                                         static const SkSmartAttributeInfo a = {
1829                                                 "media-wearout-indicator", SK_SMART_ATTRIBUTE_UNIT_UNKNOWN, NULL
1830                                         };
1831                                         return &a;
1832                                 }
1833                                 /* %STRINGPOOLSTOP% */
1834                                 break;
1835
1836                 }
1837         }
1838
1839         /* These are the simple cases */
1840         if (attribute_info[id].name)
1841                 return &attribute_info[id];
1842
1843         return NULL;
1844 }
1845
1846 int sk_disk_smart_parse(SkDisk *d, const SkSmartParsedData **spd) {
1847
1848         if (!d->smart_data_valid) {
1849                 errno = ENOENT;
1850                 return -1;
1851         }
1852
1853         switch (d->smart_data[362]) {
1854                 case 0x00:
1855                 case 0x80:
1856                         d->smart_parsed_data.offline_data_collection_status = SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_NEVER;
1857                         break;
1858
1859                 case 0x02:
1860                 case 0x82:
1861                         d->smart_parsed_data.offline_data_collection_status = SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_SUCCESS;
1862                         break;
1863
1864                 case 0x03:
1865                         d->smart_parsed_data.offline_data_collection_status = SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_INPROGRESS;
1866                         break;
1867
1868                 case 0x04:
1869                 case 0x84:
1870                         d->smart_parsed_data.offline_data_collection_status = SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_SUSPENDED;
1871                         break;
1872
1873                 case 0x05:
1874                 case 0x85:
1875                         d->smart_parsed_data.offline_data_collection_status = SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_ABORTED;
1876                         break;
1877
1878                 case 0x06:
1879                 case 0x86:
1880                         d->smart_parsed_data.offline_data_collection_status = SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_FATAL;
1881                         break;
1882
1883                 default:
1884                         d->smart_parsed_data.offline_data_collection_status = SK_SMART_OFFLINE_DATA_COLLECTION_STATUS_UNKNOWN;
1885                         break;
1886         }
1887
1888         d->smart_parsed_data.self_test_execution_percent_remaining = 10*(d->smart_data[363] & 0xF);
1889         d->smart_parsed_data.self_test_execution_status = (d->smart_data[363] >> 4) & 0xF;
1890
1891         d->smart_parsed_data.total_offline_data_collection_seconds = (uint16_t) d->smart_data[364] | ((uint16_t) d->smart_data[365] << 8);
1892
1893         d->smart_parsed_data.conveyance_test_available = disk_smart_is_conveyance_test_available(d);
1894         d->smart_parsed_data.short_and_extended_test_available = disk_smart_is_short_and_extended_test_available(d);
1895         d->smart_parsed_data.start_test_available = disk_smart_is_start_test_available(d);
1896         d->smart_parsed_data.abort_test_available = disk_smart_is_abort_test_available(d);
1897
1898         d->smart_parsed_data.short_test_polling_minutes = d->smart_data[372];
1899         d->smart_parsed_data.extended_test_polling_minutes = d->smart_data[373] != 0xFF ? d->smart_data[373] : ((uint16_t) d->smart_data[376] << 8 | (uint16_t) d->smart_data[375]);
1900         d->smart_parsed_data.conveyance_test_polling_minutes = d->smart_data[374];
1901
1902         *spd = &d->smart_parsed_data;
1903
1904         return 0;
1905 }
1906
1907 static void find_threshold(SkDisk *d, SkSmartAttributeParsedData *a) {
1908         uint8_t *p;
1909         unsigned n;
1910
1911         if (!d->smart_thresholds_valid)
1912                 goto fail;
1913
1914         for (n = 0, p = d->smart_thresholds+2; n < 30; n++, p+=12)
1915                 if (p[0] == a->id)
1916                         break;
1917
1918         if (n >= 30)
1919                 goto fail;
1920
1921         a->threshold = p[1];
1922         a->threshold_valid = p[1] != 0xFE;
1923
1924         a->good_now_valid = FALSE;
1925         a->good_now = TRUE;
1926         a->good_in_the_past_valid = FALSE;
1927         a->good_in_the_past = TRUE;
1928
1929         /* Always-Fail and Always-Passing thresholds are not relevant
1930          * for our assessment. */
1931         if (p[1] >= 1 && p[1] <= 0xFD) {
1932
1933                 if (a->worst_value_valid) {
1934                         a->good_in_the_past = a->good_in_the_past && (a->worst_value > a->threshold);
1935                         a->good_in_the_past_valid = TRUE;
1936                 }
1937
1938                 if (a->current_value_valid) {
1939                         a->good_now = a->good_now && (a->current_value > a->threshold);
1940                         a->good_now_valid = TRUE;
1941                 }
1942         }
1943
1944         a->warn =
1945                 (a->good_now_valid && !a->good_now) ||
1946                 (a->good_in_the_past_valid && !a->good_in_the_past);
1947
1948         return;
1949
1950 fail:
1951         a->threshold_valid = FALSE;
1952         a->good_now_valid = FALSE;
1953         a->good_in_the_past_valid = FALSE;
1954         a->warn = FALSE;
1955 }
1956
1957 int sk_disk_smart_parse_attributes(SkDisk *d, SkSmartAttributeParseCallback cb, void* userdata) {
1958         uint8_t *p;
1959         unsigned n;
1960
1961         if (!d->smart_data_valid) {
1962                 errno = ENOENT;
1963                 return -1;
1964         }
1965
1966         for (n = 0, p = d->smart_data + 2; n < 30; n++, p+=12) {
1967                 SkSmartAttributeParsedData a;
1968                 const SkSmartAttributeInfo *i;
1969                 char *an = NULL;
1970
1971                 if (p[0] == 0)
1972                         continue;
1973
1974                 memset(&a, 0, sizeof(a));
1975                 a.id = p[0];
1976                 a.current_value = p[3];
1977                 a.current_value_valid = p[3] >= 1 && p[3] <= 0xFD;
1978                 a.worst_value = p[4];
1979                 a.worst_value_valid = p[4] >= 1 && p[4] <= 0xFD;
1980
1981                 a.flags = ((uint16_t) p[2] << 8) | p[1];
1982                 a.prefailure = !!(p[1] & 1);
1983                 a.online = !!(p[1] & 2);
1984
1985                 memcpy(a.raw, p+5, 6);
1986
1987                 if ((i = lookup_attribute(d, p[0]))) {
1988                         a.name = _P(i->name);
1989                         a.pretty_unit = i->unit;
1990                 } else {
1991                         if (asprintf(&an, "attribute-%u", a.id) < 0) {
1992                                 errno = ENOMEM;
1993                                 return -1;
1994                         }
1995
1996                         a.name = an;
1997                         a.pretty_unit = SK_SMART_ATTRIBUTE_UNIT_UNKNOWN;
1998                 }
1999
2000                 make_pretty(&a);
2001
2002                 find_threshold(d, &a);
2003
2004                 if (i && i->verify)
2005                         i->verify(d, &a);
2006
2007                 cb(d, &a, userdata);
2008                 free(an);
2009         }
2010
2011         return 0;
2012 }
2013
2014 static const char *yes_no(SkBool b) {
2015         return  b ? "yes" : "no";
2016 }
2017
2018 const char* sk_smart_attribute_unit_to_string(SkSmartAttributeUnit unit) {
2019
2020         /* %STRINGPOOLSTART% */
2021         const char * const map[] = {
2022                 [SK_SMART_ATTRIBUTE_UNIT_UNKNOWN] = NULL,
2023                 [SK_SMART_ATTRIBUTE_UNIT_NONE] = "",
2024                 [SK_SMART_ATTRIBUTE_UNIT_MSECONDS] = "ms",
2025                 [SK_SMART_ATTRIBUTE_UNIT_SECTORS] = "sectors",
2026                 [SK_SMART_ATTRIBUTE_UNIT_MKELVIN] = "mK",
2027                 [SK_SMART_ATTRIBUTE_UNIT_PERCENT] = "%",
2028                 [SK_SMART_ATTRIBUTE_UNIT_SMALL_PERCENT] = "%",
2029                 [SK_SMART_ATTRIBUTE_UNIT_MB] = "MB"
2030         };
2031         /* %STRINGPOOLSTOP% */
2032
2033         if (unit >= _SK_SMART_ATTRIBUTE_UNIT_MAX)
2034                 return NULL;
2035
2036         return _P(map[unit]);
2037 }
2038
2039 struct attr_helper {
2040         uint64_t *value;
2041         SkBool found;
2042 };
2043
2044 static void temperature_cb(SkDisk *d, const SkSmartAttributeParsedData *a, struct attr_helper *ah) {
2045
2046         if (a->pretty_unit != SK_SMART_ATTRIBUTE_UNIT_MKELVIN)
2047                 return;
2048
2049         if (!strcmp(a->name, "temperature-centi-celsius") ||
2050             !strcmp(a->name, "temperature-celsius") ||
2051             !strcmp(a->name, "temperature-celsius-2") ||
2052             !strcmp(a->name, "airflow-temperature-celsius")) {
2053
2054                 if (!ah->found || a->pretty_value > *ah->value)
2055                         *ah->value = a->pretty_value;
2056
2057                 ah->found = TRUE;
2058         }
2059 }
2060
2061 int sk_disk_smart_get_temperature(SkDisk *d, uint64_t *kelvin) {
2062         struct attr_helper ah;
2063
2064         assert(d);
2065         assert(kelvin);
2066
2067         ah.found = FALSE;
2068         ah.value = kelvin;
2069
2070         if (sk_disk_smart_parse_attributes(d, (SkSmartAttributeParseCallback) temperature_cb, &ah) < 0)
2071                 return -1;
2072
2073         if (!ah.found) {
2074                 errno = ENOENT;
2075                 return -1;
2076         }
2077
2078         return 0;
2079 }
2080
2081 static void power_on_cb(SkDisk *d, const SkSmartAttributeParsedData *a, struct attr_helper *ah) {
2082
2083         if (a->pretty_unit != SK_SMART_ATTRIBUTE_UNIT_MSECONDS)
2084                 return;
2085
2086         if (!strcmp(a->name, "power-on-minutes") ||
2087             !strcmp(a->name, "power-on-seconds") ||
2088             !strcmp(a->name, "power-on-seconds-2") ||
2089             !strcmp(a->name, "power-on-half-minutes") ||
2090             !strcmp(a->name, "power-on-hours")) {
2091
2092                 if (!ah->found || a->pretty_value > *ah->value)
2093                         *ah->value = a->pretty_value;
2094
2095                 ah->found = TRUE;
2096         }
2097 }
2098
2099 int sk_disk_smart_get_power_on(SkDisk *d, uint64_t *mseconds) {
2100         struct attr_helper ah;
2101
2102         assert(d);
2103         assert(mseconds);
2104
2105         ah.found = FALSE;
2106         ah.value = mseconds;
2107
2108         if (sk_disk_smart_parse_attributes(d, (SkSmartAttributeParseCallback) power_on_cb, &ah) < 0)
2109                 return -1;
2110
2111         if (!ah.found) {
2112                 errno = ENOENT;
2113                 return -1;
2114         }
2115
2116         return 0;
2117 }
2118
2119 static void power_cycle_cb(SkDisk *d, const SkSmartAttributeParsedData *a, struct attr_helper *ah) {
2120
2121         if (a->pretty_unit != SK_SMART_ATTRIBUTE_UNIT_NONE)
2122                 return;
2123
2124         if (!strcmp(a->name, "power-cycle-count")) {
2125
2126                 if (!ah->found || a->pretty_value > *ah->value)
2127                         *ah->value = a->pretty_value;
2128
2129                 ah->found = TRUE;
2130         }
2131 }
2132
2133 int sk_disk_smart_get_power_cycle(SkDisk *d, uint64_t *count) {
2134         struct attr_helper ah;
2135
2136         assert(d);
2137         assert(count);
2138
2139         ah.found = FALSE;
2140         ah.value = count;
2141
2142         if (sk_disk_smart_parse_attributes(d, (SkSmartAttributeParseCallback) power_cycle_cb, &ah) < 0)
2143                 return -1;
2144
2145         if (!ah.found) {
2146                 errno = ENOENT;
2147                 return -1;
2148         }
2149
2150         return 0;
2151 }
2152
2153 static void reallocated_cb(SkDisk *d, const SkSmartAttributeParsedData *a, struct attr_helper *ah) {
2154
2155         if (a->pretty_unit != SK_SMART_ATTRIBUTE_UNIT_SECTORS)
2156                 return;
2157
2158         if (!strcmp(a->name, "reallocated-sector-count")) {
2159
2160                 if (!ah->found || a->pretty_value > *ah->value)
2161                         *ah->value = a->pretty_value;
2162
2163                 ah->found = TRUE;
2164         }
2165 }
2166
2167 static void pending_cb(SkDisk *d, const SkSmartAttributeParsedData *a, struct attr_helper *ah) {
2168
2169         if (a->pretty_unit != SK_SMART_ATTRIBUTE_UNIT_SECTORS)
2170                 return;
2171
2172         if (!strcmp(a->name, "current-pending-sector")) {
2173
2174                 if (!ah->found || a->pretty_value > *ah->value)
2175                         *ah->value = a->pretty_value;
2176
2177                 ah->found = TRUE;
2178         }
2179 }
2180
2181 int sk_disk_smart_get_bad(SkDisk *d, uint64_t *sectors) {
2182         struct attr_helper ah1, ah2;
2183         uint64_t sectors1, sectors2;
2184
2185         assert(d);
2186         assert(sectors);
2187
2188         ah1.found = FALSE;
2189         ah1.value = &sectors1;
2190
2191         if (sk_disk_smart_parse_attributes(d, (SkSmartAttributeParseCallback) reallocated_cb, &ah1) < 0)
2192                 return -1;
2193
2194         ah2.found = FALSE;
2195         ah2.value = &sectors2;
2196
2197         if (sk_disk_smart_parse_attributes(d, (SkSmartAttributeParseCallback) pending_cb, &ah2) < 0)
2198                 return -1;
2199
2200         if (!ah1.found && !ah2.found) {
2201                 errno = ENOENT;
2202                 return -1;
2203         }
2204
2205         if (ah1.found && ah2.found)
2206                 *sectors = sectors1 + sectors2;
2207         else if (ah1.found)
2208                 *sectors = sectors1;
2209         else
2210                 *sectors = sectors2;
2211
2212         return 0;
2213 }
2214
2215 const char* sk_smart_overall_to_string(SkSmartOverall overall) {
2216
2217         /* %STRINGPOOLSTART% */
2218         const char * const map[] = {
2219                 [SK_SMART_OVERALL_GOOD] = "GOOD",
2220                 [SK_SMART_OVERALL_BAD_ATTRIBUTE_IN_THE_PAST] = "BAD_ATTRIBUTE_IN_THE_PAST",
2221                 [SK_SMART_OVERALL_BAD_SECTOR] = "BAD_SECTOR",
2222                 [SK_SMART_OVERALL_BAD_ATTRIBUTE_NOW] = "BAD_ATTRIBUTE_NOW",
2223                 [SK_SMART_OVERALL_BAD_SECTOR_MANY] = "BAD_SECTOR_MANY",
2224                 [SK_SMART_OVERALL_BAD_STATUS] = "BAD_STATUS",
2225         };
2226         /* %STRINGPOOLSTOP% */
2227
2228         if (overall >= _SK_SMART_OVERALL_MAX)
2229                 return NULL;
2230
2231         return _P(map[overall]);
2232 }
2233
2234 static void bad_attribute_now_cb(SkDisk *d, const SkSmartAttributeParsedData *a, SkBool *good) {
2235         if (a->prefailure && a->good_now_valid && !a->good_now)
2236                 *good = FALSE;
2237 }
2238
2239 static void bad_attribute_in_the_past_cb(SkDisk *d, const SkSmartAttributeParsedData *a, SkBool *good) {
2240         if (a->prefailure && a->good_in_the_past_valid && !a->good_in_the_past)
2241                 *good = FALSE;
2242 }
2243
2244 static uint64_t u64log2(uint64_t n) {
2245         unsigned r;
2246
2247         if (n <= 1)
2248                 return 0;
2249
2250         r = 0;
2251         for (;;) {
2252                 n = n >> 1;
2253                 if (!n)
2254                         return r;
2255                 r++;
2256         }
2257 }
2258
2259 int sk_disk_smart_get_overall(SkDisk *d, SkSmartOverall *overall) {
2260         SkBool good;
2261         uint64_t sectors, sector_threshold;
2262
2263         assert(d);
2264         assert(overall);
2265
2266         /* First, check SMART self-assesment */
2267         if (sk_disk_smart_status(d, &good) < 0)
2268                 return -1;
2269
2270         if (!good) {
2271                 *overall = SK_SMART_OVERALL_BAD_STATUS;
2272                 return 0;
2273         }
2274
2275         /* Second, check if the number of bad sectors is greater than
2276          * a certain threshold */
2277         if (sk_disk_smart_get_bad(d, &sectors) < 0) {
2278                 if (errno != ENOENT)
2279                         return -1;
2280                 sectors = 0;
2281         } else {
2282
2283                 /* We use log2(n_sectors) as a threshold here. We had to pick
2284                  * something, and this makes a bit of sense, or doesn't it? */
2285                 sector_threshold = u64log2(d->size/512);
2286
2287                 if (sectors >= sector_threshold) {
2288                         *overall = SK_SMART_OVERALL_BAD_SECTOR_MANY;
2289                         return 0;
2290                 }
2291         }
2292
2293         /* Third, check if any of the SMART attributes is bad */
2294         good = TRUE;
2295         if (sk_disk_smart_parse_attributes(d, (SkSmartAttributeParseCallback) bad_attribute_now_cb, &good) < 0)
2296                 return -1;
2297
2298         if (!good) {
2299                 *overall = SK_SMART_OVERALL_BAD_ATTRIBUTE_NOW;
2300                 return 0;
2301         }
2302
2303         /* Fourth, check if there are any bad sectors at all */
2304         if (sectors > 0) {
2305                 *overall = SK_SMART_OVERALL_BAD_SECTOR;
2306                 return 0;
2307         }
2308
2309         /* Fifth, check if any of the SMART attributes ever was bad */
2310         good = TRUE;
2311         if (sk_disk_smart_parse_attributes(d, (SkSmartAttributeParseCallback) bad_attribute_in_the_past_cb, &good) < 0)
2312                 return -1;
2313
2314         if (!good) {
2315                 *overall = SK_SMART_OVERALL_BAD_ATTRIBUTE_IN_THE_PAST;
2316                 return 0;
2317         }
2318
2319         /* Sixth, there's really nothing to complain about, so give it a pass */
2320         *overall = SK_SMART_OVERALL_GOOD;
2321         return 0;
2322 }
2323
2324 static char* print_name(char *s, size_t len, uint8_t id, const char *k) {
2325
2326         if (k)
2327                 strncpy(s, k, len);
2328         else
2329                 snprintf(s, len, "%u", id);
2330
2331         s[len-1] = 0;
2332
2333         return s;
2334 }
2335
2336 static char *print_value(char *s, size_t len, uint64_t pretty_value, SkSmartAttributeUnit pretty_unit) {
2337
2338         switch (pretty_unit) {
2339                 case SK_SMART_ATTRIBUTE_UNIT_MSECONDS:
2340
2341                         if (pretty_value >= 1000LLU*60LLU*60LLU*24LLU*365LLU)
2342                                 snprintf(s, len, "%0.1f years", ((double) pretty_value)/(1000.0*60*60*24*365));
2343                         else if (pretty_value >= 1000LLU*60LLU*60LLU*24LLU*30LLU)
2344                                 snprintf(s, len, "%0.1f months", ((double) pretty_value)/(1000.0*60*60*24*30));
2345                         else if (pretty_value >= 1000LLU*60LLU*60LLU*24LLU)
2346                                 snprintf(s, len, "%0.1f days", ((double) pretty_value)/(1000.0*60*60*24));
2347                         else if (pretty_value >= 1000LLU*60LLU*60LLU)
2348                                 snprintf(s, len, "%0.1f h", ((double) pretty_value)/(1000.0*60*60));
2349                         else if (pretty_value >= 1000LLU*60LLU)
2350                                 snprintf(s, len, "%0.1f min", ((double) pretty_value)/(1000.0*60));
2351                         else if (pretty_value >= 1000LLU)
2352                                 snprintf(s, len, "%0.1f s", ((double) pretty_value)/(1000.0));
2353                         else
2354                                 snprintf(s, len, "%llu ms", (unsigned long long) pretty_value);
2355
2356                         break;
2357
2358                 case SK_SMART_ATTRIBUTE_UNIT_MKELVIN:
2359                         snprintf(s, len, "%0.1f C", ((double) pretty_value - 273150) / 1000);
2360                         break;
2361
2362                 case SK_SMART_ATTRIBUTE_UNIT_SECTORS:
2363                         snprintf(s, len, "%llu sectors", (unsigned long long) pretty_value);
2364                         break;
2365
2366                 case SK_SMART_ATTRIBUTE_UNIT_PERCENT:
2367                         snprintf(s, len, "%llu%%", (unsigned long long) pretty_value);
2368                         break;
2369
2370                 case SK_SMART_ATTRIBUTE_UNIT_SMALL_PERCENT:
2371                         snprintf(s, len, "%0.3f%%", (double) pretty_value);
2372                         break;
2373
2374                 case SK_SMART_ATTRIBUTE_UNIT_MB:
2375                         if (pretty_value >= 1000000LLU)
2376                           snprintf(s, len, "%0.3f TB",  (double) pretty_value / 1000000LLU);
2377                         else if (pretty_value >= 1000LLU)
2378                           snprintf(s, len, "%0.3f GB",  (double) pretty_value / 1000LLU);
2379                         else
2380                           snprintf(s, len, "%llu MB", (unsigned long long) pretty_value);
2381                         break;
2382
2383                 case SK_SMART_ATTRIBUTE_UNIT_NONE:
2384                         snprintf(s, len, "%llu", (unsigned long long) pretty_value);
2385                         break;
2386
2387                 case SK_SMART_ATTRIBUTE_UNIT_UNKNOWN:
2388                         snprintf(s, len, "n/a");
2389                         break;
2390
2391                 case _SK_SMART_ATTRIBUTE_UNIT_MAX:
2392                         assert(FALSE);
2393         }
2394
2395         s[len-1] = 0;
2396
2397         return s;
2398 }
2399
2400 #define HIGHLIGHT "\x1B[1m"
2401 #define ENDHIGHLIGHT "\x1B[0m"
2402
2403 static void disk_dump_attributes(SkDisk *d, const SkSmartAttributeParsedData *a, void* userdata) {
2404         char name[32];
2405         char pretty[32];
2406         char tt[32], tw[32], tc[32];
2407         SkBool highlight;
2408
2409         snprintf(tt, sizeof(tt), "%3u", a->threshold);
2410         tt[sizeof(tt)-1] = 0;
2411         snprintf(tw, sizeof(tw), "%3u", a->worst_value);
2412         tw[sizeof(tw)-1] = 0;
2413         snprintf(tc, sizeof(tc), "%3u", a->current_value);
2414         tc[sizeof(tc)-1] = 0;
2415
2416         highlight = a->warn && isatty(1);
2417
2418         if (highlight)
2419                 fprintf(stderr, HIGHLIGHT);
2420
2421         printf("%3u %-27s %-3s   %-3s   %-3s   %-11s 0x%02x%02x%02x%02x%02x%02x %-7s %-7s %-4s %-4s\n",
2422                a->id,
2423                print_name(name, sizeof(name), a->id, a->name),
2424                a->current_value_valid ? tc : "n/a",
2425                a->worst_value_valid ? tw : "n/a",
2426                a->threshold_valid ? tt : "n/a",
2427                print_value(pretty, sizeof(pretty), a->pretty_value, a->pretty_unit),
2428                a->raw[0], a->raw[1], a->raw[2], a->raw[3], a->raw[4], a->raw[5],
2429                a->prefailure ? "prefail" : "old-age",
2430                a->online ? "online" : "offline",
2431                a->good_now_valid ? yes_no(a->good_now) : "n/a",
2432                a->good_in_the_past_valid ? yes_no(a->good_in_the_past) : "n/a");
2433
2434         if (highlight)
2435                 fprintf(stderr, ENDHIGHLIGHT);
2436 }
2437
2438 int sk_disk_dump(SkDisk *d) {
2439         int ret;
2440         SkBool awake = FALSE;
2441         uint64_t size;
2442
2443         assert(d);
2444
2445         printf("Device: %s%s%s\n"
2446                "Type: %s\n",
2447                d->name ? disk_type_to_prefix_string(d->type) : "",
2448                d->name ? ":" : "",
2449                d->name ? d->name : "n/a",
2450                disk_type_to_human_string(d->type));
2451
2452         ret = sk_disk_get_size(d, &size);
2453         if (ret >= 0)
2454                 printf("Size: %lu MiB\n", (unsigned long) (d->size/1024/1024));
2455         else
2456                 printf("Size: %s\n", strerror(errno));
2457
2458         if (d->identify_valid) {
2459                 const SkIdentifyParsedData *ipd;
2460                 SkSmartQuirk quirk = 0;
2461                 unsigned i;
2462
2463                 if ((ret = sk_disk_identify_parse(d, &ipd)) < 0)
2464                         return ret;
2465
2466                 printf("Model: [%s]\n"
2467                        "Serial: [%s]\n"
2468                        "Firmware: [%s]\n"
2469                        "SMART Available: %s\n",
2470                        ipd->model,
2471                        ipd->serial,
2472                        ipd->firmware,
2473                        yes_no(disk_smart_is_available(d)));
2474
2475                 if ((ret = lookup_quirks(ipd->model, ipd->firmware, &quirk)))
2476                         return ret;
2477
2478                 printf("Quirks:");
2479
2480                 for (i = 0; quirk_name[i]; i++)
2481                         if (quirk & (1<<i))
2482                                 printf(" %s", _P(quirk_name[i]));
2483
2484                 printf("\n");
2485         }
2486
2487         ret = sk_disk_check_sleep_mode(d, &awake);
2488         printf("Awake: %s\n",
2489                ret >= 0 ? yes_no(awake) : strerror(errno));
2490
2491         if (disk_smart_is_available(d)) {
2492                 SkSmartOverall overall;
2493                 const SkSmartParsedData *spd;
2494                 SkBool good;
2495                 char pretty[32];
2496                 uint64_t value, power_on;
2497
2498                 ret = sk_disk_smart_status(d, &good);
2499                 printf("%sSMART Disk Health Good: %s%s\n",
2500                        ret >= 0 && !good ? HIGHLIGHT : "",
2501                        ret >= 0 ? yes_no(good) : strerror(errno),
2502                        ret >= 0 && !good ? ENDHIGHLIGHT : "");
2503                 if ((ret = sk_disk_smart_read_data(d)) < 0)
2504                         return ret;
2505
2506                 if ((ret = sk_disk_smart_parse(d, &spd)) < 0)
2507                         return ret;
2508
2509                 printf("Off-line Data Collection Status: [%s]\n"
2510                        "Total Time To Complete Off-Line Data Collection: %u s\n"
2511                        "Self-Test Execution Status: [%s]\n"
2512                        "Percent Self-Test Remaining: %u%%\n"
2513                        "Conveyance Self-Test Available: %s\n"
2514                        "Short/Extended Self-Test Available: %s\n"
2515                        "Start Self-Test Available: %s\n"
2516                        "Abort Self-Test Available: %s\n"
2517                        "Short Self-Test Polling Time: %u min\n"
2518                        "Extended Self-Test Polling Time: %u min\n"
2519                        "Conveyance Self-Test Polling Time: %u min\n",
2520                        sk_smart_offline_data_collection_status_to_string(spd->offline_data_collection_status),
2521                        spd->total_offline_data_collection_seconds,
2522                        sk_smart_self_test_execution_status_to_string(spd->self_test_execution_status),
2523                        spd->self_test_execution_percent_remaining,
2524                        yes_no(spd->conveyance_test_available),
2525                        yes_no(spd->short_and_extended_test_available),
2526                        yes_no(spd->start_test_available),
2527                        yes_no(spd->abort_test_available),
2528                        spd->short_test_polling_minutes,
2529                        spd->extended_test_polling_minutes,
2530                        spd->conveyance_test_polling_minutes);
2531
2532                 if (sk_disk_smart_get_bad(d, &value) < 0)
2533                         printf("Bad Sectors: %s\n", strerror(errno));
2534                 else
2535                         printf("%sBad Sectors: %s%s\n",
2536                                value > 0 ? HIGHLIGHT : "",
2537                                print_value(pretty, sizeof(pretty), value, SK_SMART_ATTRIBUTE_UNIT_SECTORS),
2538                                value > 0 ? ENDHIGHLIGHT : "");
2539
2540                 if (sk_disk_smart_get_power_on(d, &power_on) < 0) {
2541                         printf("Powered On: %s\n", strerror(errno));
2542                         power_on = 0;
2543                 } else
2544                         printf("Powered On: %s\n", print_value(pretty, sizeof(pretty), power_on, SK_SMART_ATTRIBUTE_UNIT_MSECONDS));
2545
2546                 if (sk_disk_smart_get_power_cycle(d, &value) < 0)
2547                         printf("Power Cycles: %s\n", strerror(errno));
2548                 else {
2549                         printf("Power Cycles: %llu\n", (unsigned long long) value);
2550
2551                         if (value > 0 && power_on > 0)
2552                                 printf("Average Powered On Per Power Cycle: %s\n", print_value(pretty, sizeof(pretty), power_on/value, SK_SMART_ATTRIBUTE_UNIT_MSECONDS));
2553                 }
2554
2555                 if (sk_disk_smart_get_temperature(d, &value) < 0)
2556                         printf("Temperature: %s\n", strerror(errno));
2557                 else
2558                         printf("Temperature: %s\n", print_value(pretty, sizeof(pretty), value, SK_SMART_ATTRIBUTE_UNIT_MKELVIN));
2559
2560                 printf("Attribute Parsing Verification: %s\n",
2561                        d->attribute_verification_bad ? "Bad" : "Good");
2562
2563                 if (sk_disk_smart_get_overall(d, &overall) < 0)
2564                         printf("Overall Status: %s\n", strerror(errno));
2565                 else
2566                         printf("%sOverall Status: %s%s\n",
2567                                overall != SK_SMART_OVERALL_GOOD ? HIGHLIGHT : "",
2568                                sk_smart_overall_to_string(overall),
2569                                overall != SK_SMART_OVERALL_GOOD ? ENDHIGHLIGHT : "");
2570
2571                 printf("%3s %-27s %5s %5s %5s %-11s %-14s %-7s %-7s %-4s %-4s\n",
2572                        "ID#",
2573                        "Name",
2574                        "Value",
2575                        "Worst",
2576                        "Thres",
2577                        "Pretty",
2578                        "Raw",
2579                        "Type",
2580                        "Updates",
2581                        "Good",
2582                        "Good/Past");
2583
2584                 if ((ret = sk_disk_smart_parse_attributes(d, disk_dump_attributes, NULL)) < 0)
2585                         return ret;
2586         } else
2587                 printf("ATA SMART not supported.\n");
2588
2589         return 0;
2590 }
2591
2592 int sk_disk_get_size(SkDisk *d, uint64_t *bytes) {
2593         assert(d);
2594         assert(bytes);
2595
2596         if (d->size == (uint64_t) -1) {
2597                 errno = ENODATA;
2598                 return -1;
2599         }
2600
2601         *bytes = d->size;
2602         return 0;
2603 }
2604
2605 static int disk_find_type(SkDisk *d, dev_t devnum) {
2606         struct udev *udev;
2607         struct udev_device *dev = NULL, *usb;
2608         int r = -1;
2609         const char *a;
2610
2611         assert(d);
2612
2613         if (!(udev = udev_new())) {
2614                 errno = ENXIO;
2615                 goto finish;
2616         }
2617
2618         if (!(dev = udev_device_new_from_devnum(udev, 'b', devnum))) {
2619                 errno = ENODEV;
2620                 goto finish;
2621         }
2622
2623         if ((a = udev_device_get_property_value(dev, "ID_ATA_SMART_ACCESS"))) {
2624                 unsigned u;
2625
2626                 for (u = 0; u < _SK_DISK_TYPE_MAX; u++) {
2627                         const char *t;
2628
2629                         if (!(t = disk_type_to_prefix_string(u)))
2630                                 continue;
2631
2632                         if (!strcmp(a, t)) {
2633                                 d->type = u;
2634                                 r = 0;
2635                                 goto finish;
2636                         }
2637                 }
2638
2639                 d->type = SK_DISK_TYPE_NONE;
2640                 r = 0;
2641                 goto finish;
2642         }
2643
2644         if ((usb = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_device"))) {
2645                 const char *product, *vendor;
2646                 uint32_t pid, vid;
2647
2648                 if (!(product = udev_device_get_sysattr_value(usb, "idProduct")) ||
2649                     sscanf(product, "%04x", &pid) != 1) {
2650                         errno = ENODEV;
2651                         goto finish;
2652                 }
2653
2654                 if (!(vendor = udev_device_get_sysattr_value(usb, "idVendor")) ||
2655                     sscanf(vendor, "%04x", &vid) != 1) {
2656                         errno = ENODEV;
2657                         goto finish;
2658                 }
2659
2660                 if ((vid == 0x0928 && pid == 0x0000))
2661                         /* This Oxford Semiconductor bridge seems to
2662                          * choke on SAT commands. Let's explicitly
2663                          * black list it here.
2664                          *
2665                          * http://bugs.freedesktop.org/show_bug.cgi?id=24951 */
2666                         d->type = SK_DISK_TYPE_NONE;
2667                 else if ((vid == 0x152d && pid == 0x2329) ||
2668                          (vid == 0x152d && pid == 0x2338) ||
2669                          (vid == 0x152d && pid == 0x2339))
2670                         /* Some JMicron bridges seem to choke on SMART
2671                          * commands, so let's explicitly black list
2672                          * them here.
2673                          *
2674                          * https://bugzilla.redhat.com/show_bug.cgi?id=515881
2675                          *
2676                          * At least some of the JMicron bridges with
2677                          * these vids/pids choke on the jmicron access
2678                          * mode. To make sure we don't break things
2679                          * for people we now disable this by
2680                          * default. */
2681                         d->type = SK_DISK_TYPE_NONE;
2682                 else if ((vid == 0x152d && pid == 0x2336))
2683                         /* This JMicron bridge seems to always work
2684                          * with SMART commands send with the jmicron
2685                          * access mode. */
2686                         d->type = SK_DISK_TYPE_JMICRON;
2687                 else if ((vid == 0x0c0b && pid == 0xb159) ||
2688                     (vid == 0x04fc && pid == 0x0c25) ||
2689                     (vid == 0x04fc && pid == 0x0c15))
2690                         d->type = SK_DISK_TYPE_SUNPLUS;
2691                 else
2692                         d->type = SK_DISK_TYPE_ATA_PASSTHROUGH_12;
2693
2694         } else if (udev_device_get_parent_with_subsystem_devtype(dev, "ide", NULL))
2695                 d->type = SK_DISK_TYPE_LINUX_IDE;
2696         else if (udev_device_get_parent_with_subsystem_devtype(dev, "scsi", NULL))
2697                 d->type = SK_DISK_TYPE_ATA_PASSTHROUGH_16;
2698         else
2699                 d->type = SK_DISK_TYPE_AUTO;
2700
2701         r = 0;
2702
2703 finish:
2704         if (dev)
2705                 udev_device_unref(dev);
2706
2707         if (udev)
2708                 udev_unref(udev);
2709
2710         return r;
2711 }
2712
2713 static int init_smart(SkDisk *d) {
2714         /* We don't do the SMART initialization right-away, since some
2715          * drivers spin up when we do that */
2716
2717         int ret;
2718
2719         if (d->smart_initialized)
2720                 return 0;
2721
2722         d->smart_initialized = TRUE;
2723
2724         /* Check if driver can do SMART, and enable if necessary */
2725         if (!disk_smart_is_available(d))
2726                 return 0;
2727
2728         if (!disk_smart_is_enabled(d)) {
2729                 if ((ret = disk_smart_enable(d, TRUE)) < 0)
2730                         goto fail;
2731
2732                 if ((ret = disk_identify_device(d)) < 0)
2733                         goto fail;
2734
2735                 if (!disk_smart_is_enabled(d)) {
2736                         errno = EIO;
2737                         ret = -1;
2738                         goto fail;
2739                 }
2740         }
2741
2742         disk_smart_read_thresholds(d);
2743         ret = 0;
2744
2745 fail:
2746         return ret;
2747 }
2748
2749 int sk_disk_open(const char *name, SkDisk **_d) {
2750         SkDisk *d;
2751         int ret = -1;
2752         struct stat st;
2753
2754         assert(_d);
2755
2756         if (!(d = calloc(1, sizeof(SkDisk)))) {
2757                 errno = ENOMEM;
2758                 goto fail;
2759         }
2760
2761         d->fd = -1;
2762         d->size = (uint64_t) -1;
2763
2764         if (!name)
2765                 d->type = SK_DISK_TYPE_BLOB;
2766         else {
2767                 const char *dn;
2768
2769                 d->type = SK_DISK_TYPE_AUTO;
2770
2771                 if (!(dn = disk_type_from_string(name, &d->type)))
2772                         dn = name;
2773
2774                 if (!(d->name = strdup(dn))) {
2775                         errno = ENOMEM;
2776                         goto fail;
2777                 }
2778
2779                 if ((d->fd = open(d->name,
2780                                   O_RDONLY|O_NOCTTY|O_NONBLOCK
2781 #ifdef O_CLOEXEC
2782                                   |O_CLOEXEC
2783 #endif
2784
2785                      )) < 0) {
2786                         ret = d->fd;
2787                         goto fail;
2788                 }
2789
2790                 if ((ret = fstat(d->fd, &st)) < 0)
2791                         goto fail;
2792
2793                 if (!S_ISBLK(st.st_mode)) {
2794                         errno = ENODEV;
2795                         ret = -1;
2796                         goto fail;
2797                 }
2798
2799                 /* So, it's a block device. Let's make sure the ioctls work */
2800                 if ((ret = ioctl(d->fd, BLKGETSIZE64, &d->size)) < 0)
2801                         goto fail;
2802
2803                 if (d->size <= 0 || d->size == (uint64_t) -1) {
2804                         errno = EIO;
2805                         ret = -1;
2806                         goto fail;
2807                 }
2808
2809                 /* OK, it's a real block device with a size. Now let's find the suitable API */
2810                 if (d->type == SK_DISK_TYPE_AUTO)
2811                         if ((ret = disk_find_type(d, st.st_rdev)) < 0)
2812                                 goto fail;
2813
2814                 if (d->type == SK_DISK_TYPE_AUTO) {
2815                         /* We have no clue, so let's autotest for a working API */
2816                         for (d->type = 0; d->type < _SK_DISK_TYPE_TEST_MAX; d->type++)
2817                                 if (disk_identify_device(d) >= 0)
2818                                         break;
2819                         if (d->type >= _SK_DISK_TYPE_TEST_MAX)
2820                                 d->type = SK_DISK_TYPE_NONE;
2821                 } else
2822                         disk_identify_device(d);
2823         }
2824
2825         *_d = d;
2826
2827         return 0;
2828
2829 fail:
2830
2831         if (d)
2832                 sk_disk_free(d);
2833
2834         return ret;
2835 }
2836
2837 void sk_disk_free(SkDisk *d) {
2838         assert(d);
2839
2840         if (d->fd >= 0)
2841                 close(d->fd);
2842
2843         free(d->name);
2844         free(d->blob);
2845         free(d);
2846 }
2847
2848 int sk_disk_get_blob(SkDisk *d, const void **blob, size_t *rsize) {
2849         size_t size;
2850         SkBool good, have_good = FALSE;
2851         uint32_t *p;
2852
2853         assert(d);
2854         assert(blob);
2855         assert(rsize);
2856
2857         size =
2858                 (d->identify_valid ? 8 + sizeof(d->identify) : 0) +
2859                 (d->smart_data_valid ? 8 + sizeof(d->smart_data) : 0) +
2860                 (d->smart_thresholds_valid ? 8 + sizeof(d->smart_thresholds) : 0);
2861
2862         if (sk_disk_smart_status(d, &good) >= 0) {
2863                 size += 12;
2864                 have_good = TRUE;
2865         }
2866
2867         if (size <= 0) {
2868                 errno = ENODATA;
2869                 return -1;
2870         }
2871
2872         free(d->blob);
2873         if (!(d->blob = malloc(size))) {
2874                 errno = ENOMEM;
2875                 return -1;
2876         }
2877
2878         p = d->blob;
2879
2880         /* These memory accesses are only OK as long as all our
2881          * objects are sensibly aligned, which they are... */
2882
2883         if (d->identify_valid) {
2884                 p[0] = SK_BLOB_TAG_IDENTIFY;
2885                 p[1] = htonl(sizeof(d->identify));
2886                 p += 2;
2887
2888                 memcpy(p, d->identify, sizeof(d->identify));
2889                 p = (uint32_t*) ((uint8_t*) p + sizeof(d->identify));
2890         }
2891
2892         if (have_good) {
2893                 p[0] = SK_BLOB_TAG_SMART_STATUS;
2894                 p[1] = htonl(4);
2895                 p[2] = htonl(!!good);
2896                 p += 3;
2897         }
2898
2899         if (d->smart_data_valid) {
2900                 p[0] = SK_BLOB_TAG_SMART_DATA;
2901                 p[1] = htonl(sizeof(d->smart_data));
2902                 p += 2;
2903
2904                 memcpy(p, d->smart_data, sizeof(d->smart_data));
2905                 p = (uint32_t*) ((uint8_t*) p + sizeof(d->smart_data));
2906         }
2907
2908         if (d->smart_thresholds_valid) {
2909                 p[0] = SK_BLOB_TAG_SMART_THRESHOLDS;
2910                 p[1] = htonl(sizeof(d->smart_thresholds));
2911                 p += 2;
2912
2913                 memcpy(p, d->smart_thresholds, sizeof(d->smart_thresholds));
2914                 p = (uint32_t*) ((uint8_t*) p + sizeof(d->smart_thresholds));
2915         }
2916
2917         assert((size_t) ((uint8_t*) p - (uint8_t*) d->blob) == size);
2918
2919         *blob = d->blob;
2920         *rsize = size;
2921
2922         return 0;
2923 }
2924
2925 int sk_disk_set_blob(SkDisk *d, const void *blob, size_t size) {
2926         const uint32_t *p;
2927         size_t left;
2928         SkBool idv = FALSE, sdv = FALSE, stv = FALSE, bssv = FALSE;
2929
2930         assert(d);
2931         assert(blob);
2932
2933         if (d->type != SK_DISK_TYPE_BLOB) {
2934                 errno = ENODEV;
2935                 return -1;
2936         }
2937
2938         if (size <= 0) {
2939                 errno = EINVAL;
2940                 return -1;
2941         }
2942
2943         /* First run, verify if everything makes sense */
2944         p = blob;
2945         left = size;
2946         while (left > 0) {
2947                 uint32_t tag, tsize;
2948
2949                 if (left < 8) {
2950                         errno = EINVAL;
2951                         return -1;
2952                 }
2953
2954                 memcpy(&tag, p, 4);
2955                 memcpy(&tsize, p+1, 4);
2956                 p += 2;
2957                 left -= 8;
2958
2959                 if (left < ntohl(tsize)) {
2960                         errno = EINVAL;
2961                         return -1;
2962                 }
2963
2964                 switch (tag) {
2965
2966                         case SK_BLOB_TAG_IDENTIFY:
2967                                 if (ntohl(tsize) != sizeof(d->identify) || idv) {
2968                                         errno = EINVAL;
2969                                         return -1;
2970                                 }
2971                                 idv = TRUE;
2972                                 break;
2973
2974                         case SK_BLOB_TAG_SMART_STATUS:
2975                                 if (ntohl(tsize) != 4 || bssv) {
2976                                         errno = EINVAL;
2977                                         return -1;
2978                                 }
2979                                 bssv = TRUE;
2980                                 break;
2981
2982                         case SK_BLOB_TAG_SMART_DATA:
2983                                 if (ntohl(tsize) != sizeof(d->smart_data) || sdv) {
2984                                         errno = EINVAL;
2985                                         return -1;
2986                                 }
2987                                 sdv = TRUE;
2988                                 break;
2989
2990                         case SK_BLOB_TAG_SMART_THRESHOLDS:
2991                                 if (ntohl(tsize) != sizeof(d->smart_thresholds) || stv) {
2992                                         errno = EINVAL;
2993                                         return -1;
2994                                 }
2995                                 stv = TRUE;
2996                                 break;
2997                 }
2998
2999                 p = (uint32_t*) ((uint8_t*) p + ntohl(tsize));
3000                 left -= ntohl(tsize);
3001         }
3002
3003         if (!idv) {
3004                 errno = -ENODATA;
3005                 return -1;
3006         }
3007
3008         d->identify_valid = idv;
3009         d->smart_data_valid = sdv;
3010         d->smart_thresholds_valid = stv;
3011         d->blob_smart_status_valid = bssv;
3012
3013         /* Second run, actually copy things in */
3014         p = blob;
3015         left = size;
3016         while (left > 0) {
3017                 uint32_t tag, tsize;
3018
3019                 assert(left >= 8);
3020                 memcpy(&tag, p, 4);
3021                 memcpy(&tsize, p+1, 4);
3022                 p += 2;
3023                 left -= 8;
3024
3025                 assert(left >= ntohl(tsize));
3026
3027                 switch (tag) {
3028
3029                         case SK_BLOB_TAG_IDENTIFY:
3030                                 assert(ntohl(tsize) == sizeof(d->identify));
3031                                 memcpy(d->identify, p, sizeof(d->identify));
3032                                 break;
3033
3034                         case SK_BLOB_TAG_SMART_STATUS: {
3035                                 uint32_t ok;
3036                                 assert(ntohl(tsize) == 4);
3037                                 memcpy(&ok, p, 4);
3038                                 d->blob_smart_status = !!ok;
3039                                 break;
3040                         }
3041
3042                         case SK_BLOB_TAG_SMART_DATA:
3043                                 assert(ntohl(tsize) == sizeof(d->smart_data));
3044                                 memcpy(d->smart_data, p, sizeof(d->smart_data));
3045                                 break;
3046
3047                         case SK_BLOB_TAG_SMART_THRESHOLDS:
3048                                 assert(ntohl(tsize) == sizeof(d->smart_thresholds));
3049                                 memcpy(d->smart_thresholds, p, sizeof(d->smart_thresholds));
3050                                 break;
3051                 }
3052
3053                 p = (uint32_t*) ((uint8_t*) p + ntohl(tsize));
3054                 left -= ntohl(tsize);
3055         }
3056
3057         return 0;
3058 }