platform-intel.c

   1 /*
   2  * Intel(R) Matrix Storage Manager hardware and firmware support routines
   3  *
   4  * Copyright (C) 2008 Intel Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19 #include "mdadm.h"
  20 #include "platform-intel.h"
  21 #include "probe_roms.h"
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <dirent.h>
  27 #include <fcntl.h>
  28 #include <sys/mman.h>
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <limits.h>
  32
  33 static int devpath_to_ll(const char *dev_path, const char *entry,
  34                          unsigned long long *val);
  35
  36 static __u16 devpath_to_vendor(const char *dev_path);
  37
  38 static void free_sys_dev(struct sys_dev **list)
  39 {
  40         while (*list) {
  41                 struct sys_dev *next = (*list)->next;
  42
  43                 if ((*list)->path)
  44                         free((*list)->path);
  45                 free(*list);
  46                 *list = next;
  47         }
  48 }
  49
  50 struct sys_dev *find_driver_devices(const char *bus, const char *driver)
  51 {
  52         /* search sysfs for devices driven by 'driver' */
  53         char path[292];
  54         char link[256];
  55         char *c;
  56         DIR *driver_dir;
  57         struct dirent *de;
  58         struct sys_dev *head = NULL;
  59         struct sys_dev *list = NULL;
  60         enum sys_dev_type type;
  61         unsigned long long dev_id;
  62         unsigned long long class;
  63
  64         if (strcmp(driver, "isci") == 0)
  65                 type = SYS_DEV_SAS;
  66         else if (strcmp(driver, "ahci") == 0)
  67                 type = SYS_DEV_SATA;
  68         else if (strcmp(driver, "nvme") == 0)
  69                 type = SYS_DEV_NVME;
  70         else
  71                 type = SYS_DEV_UNKNOWN;
  72
  73         sprintf(path, "/sys/bus/%s/drivers/%s", bus, driver);
  74         driver_dir = opendir(path);
  75         if (!driver_dir)
  76                 return NULL;
  77         for (de = readdir(driver_dir); de; de = readdir(driver_dir)) {
  78                 int n;
  79
  80                 /* is 'de' a device? check that the 'subsystem' link exists and
  81                  * that its target matches 'bus'
  82                  */
  83                 sprintf(path, "/sys/bus/%s/drivers/%s/%s/subsystem",
  84                         bus, driver, de->d_name);
  85                 n = readlink(path, link, sizeof(link));
  86                 if (n < 0 || n >= (int)sizeof(link))
  87                         continue;
  88                 link[n] = '\0';
  89                 c = strrchr(link, '/');
  90                 if (!c)
  91                         continue;
  92                 if (strncmp(bus, c+1, strlen(bus)) != 0)
  93                         continue;
  94
  95                 sprintf(path, "/sys/bus/%s/drivers/%s/%s",
  96                         bus, driver, de->d_name);
  97
  98                 /* if it's not Intel device skip it. */
  99                 if (devpath_to_vendor(path) != 0x8086)
 100                         continue;
 101
 102                 if (devpath_to_ll(path, "device", &dev_id) != 0)
 103                         continue;
 104
 105                 if (devpath_to_ll(path, "class", &class) != 0)
 106                         continue;
 107
 108                 /* start / add list entry */
 109                 if (!head) {
 110                         head = xmalloc(sizeof(*head));
 111                         list = head;
 112                 } else {
 113                         list->next = xmalloc(sizeof(*head));
 114                         list = list->next;
 115                 }
 116
 117                 if (!list) {
 118                         free_sys_dev(&head);
 119                         break;
 120                 }
 121
 122                 list->dev_id = (__u16) dev_id;
 123                 list->class = (__u32) class;
 124                 list->type = type;
 125                 list->path = realpath(path, NULL);
 126                 list->next = NULL;
 127                 if ((list->pci_id = strrchr(list->path, '/')) != NULL)
 128                         list->pci_id++;
 129         }
 130         closedir(driver_dir);
 131         return head;
 132 }
 133
 134 static struct sys_dev *intel_devices=NULL;
 135 static time_t valid_time = 0;
 136
 137 struct sys_dev *device_by_id(__u16 device_id)
 138 {
 139         struct sys_dev *iter;
 140
 141         for (iter = intel_devices; iter != NULL; iter = iter->next)
 142                 if (iter->dev_id == device_id)
 143                         return iter;
 144         return NULL;
 145 }
 146
 147 static int devpath_to_ll(const char *dev_path, const char *entry, unsigned long long *val)
 148 {
 149         char path[strlen(dev_path) + strlen(entry) + 2];
 150         int fd;
 151         int n;
 152
 153         sprintf(path, "%s/%s", dev_path, entry);
 154
 155         fd = open(path, O_RDONLY);
 156         if (fd < 0)
 157                 return -1;
 158         n = sysfs_fd_get_ll(fd, val);
 159         close(fd);
 160         return n;
 161 }
 162
 163 static __u16 devpath_to_vendor(const char *dev_path)
 164 {
 165         char path[strlen(dev_path) + strlen("/vendor") + 1];
 166         char vendor[7];
 167         int fd;
 168         __u16 id = 0xffff;
 169         int n;
 170
 171         sprintf(path, "%s/vendor", dev_path);
 172
 173         fd = open(path, O_RDONLY);
 174         if (fd < 0)
 175                 return 0xffff;
 176
 177         n = read(fd, vendor, sizeof(vendor));
 178         if (n == sizeof(vendor)) {
 179                 vendor[n - 1] = '\0';
 180                 id = strtoul(vendor, NULL, 16);
 181         }
 182         close(fd);
 183
 184         return id;
 185 }
 186
 187 struct sys_dev *find_intel_devices(void)
 188 {
 189         struct sys_dev *ahci, *isci, *nvme;
 190
 191         if (valid_time > time(0) - 10)
 192                 return intel_devices;
 193
 194         if (intel_devices)
 195                 free_sys_dev(&intel_devices);
 196
 197         isci = find_driver_devices("pci", "isci");
 198         ahci = find_driver_devices("pci", "ahci");
 199         nvme = find_driver_devices("pci", "nvme");
 200
 201         if (!isci && !ahci) {
 202                 ahci = nvme;
 203         } else if (!ahci) {
 204                 ahci = isci;
 205                 struct sys_dev *elem = ahci;
 206                 while (elem->next)
 207                         elem = elem->next;
 208                 elem->next = nvme;
 209         } else {
 210                 struct sys_dev *elem = ahci;
 211                 while (elem->next)
 212                         elem = elem->next;
 213                 elem->next = isci;
 214                 while (elem->next)
 215                         elem = elem->next;
 216                 elem->next = nvme;
 217         }
 218         intel_devices = ahci;
 219         valid_time = time(0);
 220         return intel_devices;
 221 }
 222
 223 /*
 224  * PCI Expansion ROM Data Structure Format */
 225 struct pciExpDataStructFormat {
 226         __u8  ver[4];
 227         __u16 vendorID;
 228         __u16 deviceID;
 229         __u16 devListOffset;
 230 } __attribute__ ((packed));
 231
 232 static struct orom_entry oroms[SYS_DEV_MAX];
 233
 234 const struct orom_entry *get_oroms(void)
 235 {
 236         return (const struct orom_entry *)&oroms;
 237 }
 238
 239 const struct imsm_orom *get_orom_by_device_id(__u16 dev_id)
 240 {
 241         int i;
 242         struct devid_list *list;
 243
 244         for (i = 0; i < SYS_DEV_MAX; i++) {
 245                 for (list = oroms[i].devid_list; list; list = list->next) {
 246                         if (list->devid == dev_id)
 247                                 return &oroms[i].orom;
 248                 }
 249         }
 250         return NULL;
 251 }
 252
 253 static const struct imsm_orom *add_orom(const struct imsm_orom *orom)
 254 {
 255         int i;
 256
 257         for (i = 0; i < SYS_DEV_MAX; i++) {
 258                 if (&oroms[i].orom == orom)
 259                         return orom;
 260                 if (oroms[i].orom.signature[0] == 0) {
 261                         oroms[i].orom = *orom;
 262                         return &oroms[i].orom;
 263                 }
 264         }
 265         return NULL;
 266 }
 267
 268 static void add_orom_device_id(const struct imsm_orom *orom, __u16 dev_id)
 269 {
 270         int i;
 271         struct devid_list *list;
 272         struct devid_list *prev = NULL;
 273
 274         for (i = 0; i < SYS_DEV_MAX; i++) {
 275                 if (&oroms[i].orom == orom) {
 276                         for (list = oroms[i].devid_list; list; prev = list, list = list->next) {
 277                                 if (list->devid == dev_id)
 278                                         return;
 279                         }
 280                         list = xmalloc(sizeof(struct devid_list));
 281                         list->devid = dev_id;
 282                         list->next = NULL;
 283
 284                         if (prev == NULL)
 285                                 oroms[i].devid_list = list;
 286                         else
 287                                 prev->next = list;
 288                         return;
 289                 }
 290         }
 291 }
 292
 293 static int scan(const void *start, const void *end, const void *data)
 294 {
 295         int offset;
 296         const struct imsm_orom *imsm_mem = NULL;
 297         int len = (end - start);
 298         struct pciExpDataStructFormat *ptr= (struct pciExpDataStructFormat *)data;
 299
 300         if (data + 0x18 > end) {
 301                 dprintf("cannot find pciExpDataStruct \n");
 302                 return 0;
 303         }
 304
 305         dprintf("ptr->vendorID: %lx __le16_to_cpu(ptr->deviceID): %lx \n",
 306                 (ulong) __le16_to_cpu(ptr->vendorID),
 307                 (ulong) __le16_to_cpu(ptr->deviceID));
 308
 309         if (__le16_to_cpu(ptr->vendorID) != 0x8086)
 310                 return 0;
 311
 312         for (offset = 0; offset < len; offset += 4) {
 313                 const void *mem = start + offset;
 314
 315                 if ((memcmp(mem, IMSM_OROM_SIGNATURE, 4) == 0)) {
 316                         imsm_mem = mem;
 317                         break;
 318                 }
 319         }
 320
 321         if (!imsm_mem)
 322                 return 0;
 323
 324         const struct imsm_orom *orom = add_orom(imsm_mem);
 325
 326         if (ptr->devListOffset) {
 327                 const __u16 *dev_list = (void *)ptr + ptr->devListOffset;
 328                 int i;
 329
 330                 for (i = 0; dev_list[i] != 0; i++)
 331                         add_orom_device_id(orom, dev_list[i]);
 332         } else {
 333                 add_orom_device_id(orom, __le16_to_cpu(ptr->deviceID));
 334         }
 335
 336         return 0;
 337 }
 338
 339 const struct imsm_orom *imsm_platform_test(struct sys_dev *hba)
 340 {
 341         struct imsm_orom orom = {
 342                 .signature = IMSM_OROM_SIGNATURE,
 343                 .rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 344                                         IMSM_OROM_RLC_RAID10 | IMSM_OROM_RLC_RAID5,
 345                 .sss = IMSM_OROM_SSS_4kB | IMSM_OROM_SSS_8kB |
 346                                         IMSM_OROM_SSS_16kB | IMSM_OROM_SSS_32kB |
 347                                         IMSM_OROM_SSS_64kB | IMSM_OROM_SSS_128kB |
 348                                         IMSM_OROM_SSS_256kB | IMSM_OROM_SSS_512kB |
 349                                         IMSM_OROM_SSS_1MB | IMSM_OROM_SSS_2MB,
 350                 .dpa = IMSM_OROM_DISKS_PER_ARRAY,
 351                 .tds = IMSM_OROM_TOTAL_DISKS,
 352                 .vpa = IMSM_OROM_VOLUMES_PER_ARRAY,
 353                 .vphba = IMSM_OROM_VOLUMES_PER_HBA
 354         };
 355         orom.attr = orom.rlc | IMSM_OROM_ATTR_ChecksumVerify;
 356
 357         if (check_env("IMSM_TEST_OROM_NORAID5")) {
 358                 orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 359                                 IMSM_OROM_RLC_RAID10;
 360         }
 361         if (check_env("IMSM_TEST_AHCI_EFI_NORAID5") && (hba->type == SYS_DEV_SAS)) {
 362                 orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 363                                 IMSM_OROM_RLC_RAID10;
 364         }
 365         if (check_env("IMSM_TEST_SCU_EFI_NORAID5") && (hba->type == SYS_DEV_SATA)) {
 366                 orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 367                                 IMSM_OROM_RLC_RAID10;
 368         }
 369
 370         const struct imsm_orom *ret = add_orom(&orom);
 371
 372         add_orom_device_id(ret, hba->dev_id);
 373
 374         return ret;
 375 }
 376
 377 static const struct imsm_orom *find_imsm_hba_orom(struct sys_dev *hba)
 378 {
 379         unsigned long align;
 380
 381         if (check_env("IMSM_TEST_OROM"))
 382                 return imsm_platform_test(hba);
 383
 384         /* return empty OROM capabilities in EFI test mode */
 385         if (check_env("IMSM_TEST_AHCI_EFI") || check_env("IMSM_TEST_SCU_EFI"))
 386                 return NULL;
 387
 388         find_intel_devices();
 389
 390         if (intel_devices == NULL)
 391                 return NULL;
 392
 393         /* scan option-rom memory looking for an imsm signature */
 394         if (check_env("IMSM_SAFE_OROM_SCAN"))
 395                 align = 2048;
 396         else
 397                 align = 512;
 398         if (probe_roms_init(align) != 0)
 399                 return NULL;
 400         probe_roms();
 401         /* ignore return value - True is returned if both adapater roms are found */
 402         scan_adapter_roms(scan);
 403         probe_roms_exit();
 404
 405         return get_orom_by_device_id(hba->dev_id);
 406 }
 407
 408 #define GUID_STR_MAX    37  /* according to GUID format:
 409                              * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" */
 410
 411 #define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
 412 ((struct efi_guid) \
 413 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
 414   (b) & 0xff, ((b) >> 8) & 0xff, \
 415   (c) & 0xff, ((c) >> 8) & 0xff, \
 416   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
 417
 418 #define SYS_EFI_VAR_PATH "/sys/firmware/efi/vars"
 419 #define SYS_EFIVARS_PATH "/sys/firmware/efi/efivars"
 420 #define SCU_PROP "RstScuV"
 421 #define AHCI_PROP "RstSataV"
 422 #define AHCI_SSATA_PROP "RstsSatV"
 423 #define AHCI_CSATA_PROP "RstCSatV"
 424
 425 #define VENDOR_GUID \
 426         EFI_GUID(0x193dfefa, 0xa445, 0x4302, 0x99, 0xd8, 0xef, 0x3a, 0xad, 0x1a, 0x04, 0xc6)
 427
 428 #define PCI_CLASS_RAID_CNTRL 0x010400
 429
 430 static int read_efi_var(void *buffer, ssize_t buf_size, char *variable_name, struct efi_guid guid)
 431 {
 432         char path[PATH_MAX];
 433         char buf[GUID_STR_MAX];
 434         int fd;
 435         ssize_t n;
 436
 437         snprintf(path, PATH_MAX, "%s/%s-%s", SYS_EFIVARS_PATH, variable_name, guid_str(buf, guid));
 438
 439         fd = open(path, O_RDONLY);
 440         if (fd < 0)
 441                 return 1;
 442
 443         /* read the variable attributes and ignore it */
 444         n = read(fd, buf, sizeof(__u32));
 445         if (n < 0) {
 446                 close(fd);
 447                 return 1;
 448         }
 449
 450         /* read the variable data */
 451         n = read(fd, buffer, buf_size);
 452         close(fd);
 453         if (n < buf_size)
 454                 return 1;
 455
 456         return 0;
 457 }
 458
 459 static int read_efi_variable(void *buffer, ssize_t buf_size, char *variable_name, struct efi_guid guid)
 460 {
 461         char path[PATH_MAX];
 462         char buf[GUID_STR_MAX];
 463         int dfd;
 464         ssize_t n, var_data_len;
 465
 466         /* Try to read the variable using the new efivarfs interface first.
 467          * If that fails, fall back to the old sysfs-efivars interface. */
 468         if (!read_efi_var(buffer, buf_size, variable_name, guid))
 469                 return 0;
 470
 471         snprintf(path, PATH_MAX, "%s/%s-%s/size", SYS_EFI_VAR_PATH, variable_name, guid_str(buf, guid));
 472
 473         dprintf("EFI VAR: path=%s\n", path);
 474         /* get size of variable data */
 475         dfd = open(path, O_RDONLY);
 476         if (dfd < 0)
 477                 return 1;
 478
 479         n = read(dfd, &buf, sizeof(buf));
 480         close(dfd);
 481         if (n < 0)
 482                 return 1;
 483         buf[n] = '\0';
 484
 485         errno = 0;
 486         var_data_len = strtoul(buf, NULL, 16);
 487         if ((errno == ERANGE && (var_data_len == LONG_MAX))
 488             || (errno != 0 && var_data_len == 0))
 489                 return 1;
 490
 491         /* get data */
 492         snprintf(path, PATH_MAX, "%s/%s-%s/data", SYS_EFI_VAR_PATH, variable_name, guid_str(buf, guid));
 493
 494         dprintf("EFI VAR: path=%s\n", path);
 495         dfd = open(path, O_RDONLY);
 496         if (dfd < 0)
 497                 return 1;
 498
 499         n = read(dfd, buffer, buf_size);
 500         close(dfd);
 501         if (n != var_data_len || n < buf_size) {
 502                 return 1;
 503         }
 504
 505         return 0;
 506 }
 507
 508 const struct imsm_orom *find_imsm_efi(struct sys_dev *hba)
 509 {
 510         struct imsm_orom orom;
 511         const struct imsm_orom *ret;
 512         int err;
 513
 514         if (check_env("IMSM_TEST_AHCI_EFI") || check_env("IMSM_TEST_SCU_EFI"))
 515                 return imsm_platform_test(hba);
 516
 517         /* OROM test is set, return that there is no EFI capabilities */
 518         if (check_env("IMSM_TEST_OROM"))
 519                 return NULL;
 520
 521         if (hba->type == SYS_DEV_SATA && hba->class != PCI_CLASS_RAID_CNTRL)
 522                 return NULL;
 523
 524         err = read_efi_variable(&orom, sizeof(orom), hba->type == SYS_DEV_SAS ? SCU_PROP : AHCI_PROP, VENDOR_GUID);
 525
 526         /* try to read variable for second AHCI controller */
 527         if (err && hba->type == SYS_DEV_SATA)
 528                 err = read_efi_variable(&orom, sizeof(orom), AHCI_SSATA_PROP, VENDOR_GUID);
 529
 530         /* try to read variable for combined AHCI controllers */
 531         if (err && hba->type == SYS_DEV_SATA) {
 532                 static const struct imsm_orom *csata;
 533
 534                 err = read_efi_variable(&orom, sizeof(orom), AHCI_CSATA_PROP, VENDOR_GUID);
 535                 if (!err) {
 536                         if (!csata)
 537                                 csata = add_orom(&orom);
 538                         add_orom_device_id(csata, hba->dev_id);
 539                         return csata;
 540                 }
 541         }
 542
 543         if (err)
 544                 return NULL;
 545
 546         ret = add_orom(&orom);
 547         add_orom_device_id(ret, hba->dev_id);
 548
 549         return ret;
 550 }
 551
 552 const struct imsm_orom *find_imsm_nvme(struct sys_dev *hba)
 553 {
 554         static const struct imsm_orom *nvme_orom;
 555
 556         if (hba->type != SYS_DEV_NVME)
 557                 return NULL;
 558
 559         if (!nvme_orom) {
 560                 struct imsm_orom nvme_orom_compat = {
 561                         .signature = IMSM_NVME_OROM_COMPAT_SIGNATURE,
 562                         .rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 563                                                 IMSM_OROM_RLC_RAID10 | IMSM_OROM_RLC_RAID5,
 564                         .sss = IMSM_OROM_SSS_4kB | IMSM_OROM_SSS_8kB |
 565                                                 IMSM_OROM_SSS_16kB | IMSM_OROM_SSS_32kB |
 566                                                 IMSM_OROM_SSS_64kB | IMSM_OROM_SSS_128kB,
 567                         .dpa = IMSM_OROM_DISKS_PER_ARRAY_NVME,
 568                         .tds = IMSM_OROM_TOTAL_DISKS_NVME,
 569                         .vpa = IMSM_OROM_VOLUMES_PER_ARRAY,
 570                         .vphba = IMSM_OROM_TOTAL_DISKS_NVME / 2 * IMSM_OROM_VOLUMES_PER_ARRAY,
 571                         .attr = IMSM_OROM_ATTR_2TB | IMSM_OROM_ATTR_2TB_DISK,
 572                         .driver_features = IMSM_OROM_CAPABILITIES_EnterpriseSystem
 573                 };
 574                 nvme_orom = add_orom(&nvme_orom_compat);
 575         }
 576         add_orom_device_id(nvme_orom, hba->dev_id);
 577         return nvme_orom;
 578 }
 579
 580 const struct imsm_orom *find_imsm_capability(struct sys_dev *hba)
 581 {
 582         const struct imsm_orom *cap = get_orom_by_device_id(hba->dev_id);
 583
 584         if (cap)
 585                 return cap;
 586
 587         if (hba->type == SYS_DEV_NVME)
 588                 return find_imsm_nvme(hba);
 589         if ((cap = find_imsm_efi(hba)) != NULL)
 590                 return cap;
 591         if ((cap = find_imsm_hba_orom(hba)) != NULL)
 592                 return cap;
 593
 594         return NULL;
 595 }
 596
 597 char *devt_to_devpath(dev_t dev)
 598 {
 599         char device[46];
 600
 601         sprintf(device, "/sys/dev/block/%d:%d/device", major(dev), minor(dev));
 602         return realpath(device, NULL);
 603 }
 604
 605 char *diskfd_to_devpath(int fd)
 606 {
 607         /* return the device path for a disk, return NULL on error or fd
 608          * refers to a partition
 609          */
 610         struct stat st;
 611
 612         if (fstat(fd, &st) != 0)
 613                 return NULL;
 614         if (!S_ISBLK(st.st_mode))
 615                 return NULL;
 616
 617         return devt_to_devpath(st.st_rdev);
 618 }
 619
 620 int path_attached_to_hba(const char *disk_path, const char *hba_path)
 621 {
 622         int rc;
 623
 624         if (check_env("IMSM_TEST_AHCI_DEV") ||
 625             check_env("IMSM_TEST_SCU_DEV")) {
 626                 return 1;
 627         }
 628
 629         if (!disk_path || !hba_path)
 630                 return 0;
 631         dprintf("hba: %s - disk: %s\n", hba_path, disk_path);
 632         if (strncmp(disk_path, hba_path, strlen(hba_path)) == 0)
 633                 rc = 1;
 634         else
 635                 rc = 0;
 636
 637         return rc;
 638 }
 639
 640 int devt_attached_to_hba(dev_t dev, const char *hba_path)
 641 {
 642         char *disk_path = devt_to_devpath(dev);
 643         int rc = path_attached_to_hba(disk_path, hba_path);
 644
 645         if (disk_path)
 646                 free(disk_path);
 647
 648         return rc;
 649 }
 650
 651 int disk_attached_to_hba(int fd, const char *hba_path)
 652 {
 653         char *disk_path = diskfd_to_devpath(fd);
 654         int rc = path_attached_to_hba(disk_path, hba_path);
 655
 656         if (disk_path)
 657                 free(disk_path);
 658
 659         return rc;
 660 }