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 struct orom_entry *orom_entries;
 233
 234 const struct imsm_orom *get_orom_by_device_id(__u16 dev_id)
 235 {
 236         struct orom_entry *entry;
 237         struct devid_list *devid;
 238
 239         for (entry = orom_entries; entry; entry = entry->next) {
 240                 for (devid = entry->devid_list; devid; devid = devid->next) {
 241                         if (devid->devid == dev_id)
 242                                 return &entry->orom;
 243                 }
 244         }
 245
 246         return NULL;
 247 }
 248
 249 static struct orom_entry *add_orom(const struct imsm_orom *orom)
 250 {
 251         struct orom_entry *list;
 252         struct orom_entry *prev = NULL;
 253
 254         for (list = orom_entries; list; prev = list, list = list->next)
 255                 ;
 256
 257         list = xmalloc(sizeof(struct orom_entry));
 258         list->orom = *orom;
 259         list->devid_list = NULL;
 260         list->next = NULL;
 261
 262         if (prev == NULL)
 263                 orom_entries = list;
 264         else
 265                 prev->next = list;
 266
 267         return list;
 268 }
 269
 270 static void add_orom_device_id(struct orom_entry *entry, __u16 dev_id)
 271 {
 272         struct devid_list *list;
 273         struct devid_list *prev = NULL;
 274
 275         for (list = entry->devid_list; list; prev = list, list = list->next) {
 276                 if (list->devid == dev_id)
 277                         return;
 278         }
 279         list = xmalloc(sizeof(struct devid_list));
 280         list->devid = dev_id;
 281         list->next = NULL;
 282
 283         if (prev == NULL)
 284                 entry->devid_list = list;
 285         else
 286                 prev->next = list;
 287 }
 288
 289 static int scan(const void *start, const void *end, const void *data)
 290 {
 291         int offset;
 292         const struct imsm_orom *imsm_mem = NULL;
 293         int len = (end - start);
 294         struct pciExpDataStructFormat *ptr= (struct pciExpDataStructFormat *)data;
 295
 296         if (data + 0x18 > end) {
 297                 dprintf("cannot find pciExpDataStruct \n");
 298                 return 0;
 299         }
 300
 301         dprintf("ptr->vendorID: %lx __le16_to_cpu(ptr->deviceID): %lx \n",
 302                 (ulong) __le16_to_cpu(ptr->vendorID),
 303                 (ulong) __le16_to_cpu(ptr->deviceID));
 304
 305         if (__le16_to_cpu(ptr->vendorID) != 0x8086)
 306                 return 0;
 307
 308         for (offset = 0; offset < len; offset += 4) {
 309                 const void *mem = start + offset;
 310
 311                 if ((memcmp(mem, IMSM_OROM_SIGNATURE, 4) == 0)) {
 312                         imsm_mem = mem;
 313                         break;
 314                 }
 315         }
 316
 317         if (!imsm_mem)
 318                 return 0;
 319
 320         struct orom_entry *orom = add_orom(imsm_mem);
 321
 322         if (ptr->devListOffset) {
 323                 const __u16 *dev_list = (void *)ptr + ptr->devListOffset;
 324                 int i;
 325
 326                 for (i = 0; dev_list[i] != 0; i++)
 327                         add_orom_device_id(orom, dev_list[i]);
 328         } else {
 329                 add_orom_device_id(orom, __le16_to_cpu(ptr->deviceID));
 330         }
 331
 332         return 0;
 333 }
 334
 335 const struct imsm_orom *imsm_platform_test(struct sys_dev *hba)
 336 {
 337         struct imsm_orom orom = {
 338                 .signature = IMSM_OROM_SIGNATURE,
 339                 .rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 340                                         IMSM_OROM_RLC_RAID10 | IMSM_OROM_RLC_RAID5,
 341                 .sss = IMSM_OROM_SSS_4kB | IMSM_OROM_SSS_8kB |
 342                                         IMSM_OROM_SSS_16kB | IMSM_OROM_SSS_32kB |
 343                                         IMSM_OROM_SSS_64kB | IMSM_OROM_SSS_128kB |
 344                                         IMSM_OROM_SSS_256kB | IMSM_OROM_SSS_512kB |
 345                                         IMSM_OROM_SSS_1MB | IMSM_OROM_SSS_2MB,
 346                 .dpa = IMSM_OROM_DISKS_PER_ARRAY,
 347                 .tds = IMSM_OROM_TOTAL_DISKS,
 348                 .vpa = IMSM_OROM_VOLUMES_PER_ARRAY,
 349                 .vphba = IMSM_OROM_VOLUMES_PER_HBA
 350         };
 351         orom.attr = orom.rlc | IMSM_OROM_ATTR_ChecksumVerify;
 352
 353         if (check_env("IMSM_TEST_OROM_NORAID5")) {
 354                 orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 355                                 IMSM_OROM_RLC_RAID10;
 356         }
 357         if (check_env("IMSM_TEST_AHCI_EFI_NORAID5") && (hba->type == SYS_DEV_SAS)) {
 358                 orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 359                                 IMSM_OROM_RLC_RAID10;
 360         }
 361         if (check_env("IMSM_TEST_SCU_EFI_NORAID5") && (hba->type == SYS_DEV_SATA)) {
 362                 orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 363                                 IMSM_OROM_RLC_RAID10;
 364         }
 365
 366         struct orom_entry *ret = add_orom(&orom);
 367
 368         add_orom_device_id(ret, hba->dev_id);
 369
 370         return &ret->orom;
 371 }
 372
 373 static const struct imsm_orom *find_imsm_hba_orom(struct sys_dev *hba)
 374 {
 375         unsigned long align;
 376
 377         if (check_env("IMSM_TEST_OROM"))
 378                 return imsm_platform_test(hba);
 379
 380         /* return empty OROM capabilities in EFI test mode */
 381         if (check_env("IMSM_TEST_AHCI_EFI") || check_env("IMSM_TEST_SCU_EFI"))
 382                 return NULL;
 383
 384         find_intel_devices();
 385
 386         if (intel_devices == NULL)
 387                 return NULL;
 388
 389         /* scan option-rom memory looking for an imsm signature */
 390         if (check_env("IMSM_SAFE_OROM_SCAN"))
 391                 align = 2048;
 392         else
 393                 align = 512;
 394         if (probe_roms_init(align) != 0)
 395                 return NULL;
 396         probe_roms();
 397         /* ignore return value - True is returned if both adapater roms are found */
 398         scan_adapter_roms(scan);
 399         probe_roms_exit();
 400
 401         return get_orom_by_device_id(hba->dev_id);
 402 }
 403
 404 #define GUID_STR_MAX    37  /* according to GUID format:
 405                              * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" */
 406
 407 #define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
 408 ((struct efi_guid) \
 409 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
 410   (b) & 0xff, ((b) >> 8) & 0xff, \
 411   (c) & 0xff, ((c) >> 8) & 0xff, \
 412   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
 413
 414 #define SYS_EFI_VAR_PATH "/sys/firmware/efi/vars"
 415 #define SYS_EFIVARS_PATH "/sys/firmware/efi/efivars"
 416 #define SCU_PROP "RstScuV"
 417 #define AHCI_PROP "RstSataV"
 418 #define AHCI_SSATA_PROP "RstsSatV"
 419 #define AHCI_CSATA_PROP "RstCSatV"
 420
 421 #define VENDOR_GUID \
 422         EFI_GUID(0x193dfefa, 0xa445, 0x4302, 0x99, 0xd8, 0xef, 0x3a, 0xad, 0x1a, 0x04, 0xc6)
 423
 424 #define PCI_CLASS_RAID_CNTRL 0x010400
 425
 426 static int read_efi_var(void *buffer, ssize_t buf_size, char *variable_name, struct efi_guid guid)
 427 {
 428         char path[PATH_MAX];
 429         char buf[GUID_STR_MAX];
 430         int fd;
 431         ssize_t n;
 432
 433         snprintf(path, PATH_MAX, "%s/%s-%s", SYS_EFIVARS_PATH, variable_name, guid_str(buf, guid));
 434
 435         fd = open(path, O_RDONLY);
 436         if (fd < 0)
 437                 return 1;
 438
 439         /* read the variable attributes and ignore it */
 440         n = read(fd, buf, sizeof(__u32));
 441         if (n < 0) {
 442                 close(fd);
 443                 return 1;
 444         }
 445
 446         /* read the variable data */
 447         n = read(fd, buffer, buf_size);
 448         close(fd);
 449         if (n < buf_size)
 450                 return 1;
 451
 452         return 0;
 453 }
 454
 455 static int read_efi_variable(void *buffer, ssize_t buf_size, char *variable_name, struct efi_guid guid)
 456 {
 457         char path[PATH_MAX];
 458         char buf[GUID_STR_MAX];
 459         int dfd;
 460         ssize_t n, var_data_len;
 461
 462         /* Try to read the variable using the new efivarfs interface first.
 463          * If that fails, fall back to the old sysfs-efivars interface. */
 464         if (!read_efi_var(buffer, buf_size, variable_name, guid))
 465                 return 0;
 466
 467         snprintf(path, PATH_MAX, "%s/%s-%s/size", SYS_EFI_VAR_PATH, variable_name, guid_str(buf, guid));
 468
 469         dprintf("EFI VAR: path=%s\n", path);
 470         /* get size of variable data */
 471         dfd = open(path, O_RDONLY);
 472         if (dfd < 0)
 473                 return 1;
 474
 475         n = read(dfd, &buf, sizeof(buf));
 476         close(dfd);
 477         if (n < 0)
 478                 return 1;
 479         buf[n] = '\0';
 480
 481         errno = 0;
 482         var_data_len = strtoul(buf, NULL, 16);
 483         if ((errno == ERANGE && (var_data_len == LONG_MAX))
 484             || (errno != 0 && var_data_len == 0))
 485                 return 1;
 486
 487         /* get data */
 488         snprintf(path, PATH_MAX, "%s/%s-%s/data", SYS_EFI_VAR_PATH, variable_name, guid_str(buf, guid));
 489
 490         dprintf("EFI VAR: path=%s\n", path);
 491         dfd = open(path, O_RDONLY);
 492         if (dfd < 0)
 493                 return 1;
 494
 495         n = read(dfd, buffer, buf_size);
 496         close(dfd);
 497         if (n != var_data_len || n < buf_size) {
 498                 return 1;
 499         }
 500
 501         return 0;
 502 }
 503
 504 const struct imsm_orom *find_imsm_efi(struct sys_dev *hba)
 505 {
 506         struct imsm_orom orom;
 507         struct orom_entry *ret;
 508         int err;
 509
 510         if (check_env("IMSM_TEST_AHCI_EFI") || check_env("IMSM_TEST_SCU_EFI"))
 511                 return imsm_platform_test(hba);
 512
 513         /* OROM test is set, return that there is no EFI capabilities */
 514         if (check_env("IMSM_TEST_OROM"))
 515                 return NULL;
 516
 517         if (hba->type == SYS_DEV_SATA && hba->class != PCI_CLASS_RAID_CNTRL)
 518                 return NULL;
 519
 520         err = read_efi_variable(&orom, sizeof(orom), hba->type == SYS_DEV_SAS ? SCU_PROP : AHCI_PROP, VENDOR_GUID);
 521
 522         /* try to read variable for second AHCI controller */
 523         if (err && hba->type == SYS_DEV_SATA)
 524                 err = read_efi_variable(&orom, sizeof(orom), AHCI_SSATA_PROP, VENDOR_GUID);
 525
 526         /* try to read variable for combined AHCI controllers */
 527         if (err && hba->type == SYS_DEV_SATA) {
 528                 static struct orom_entry *csata;
 529
 530                 err = read_efi_variable(&orom, sizeof(orom), AHCI_CSATA_PROP, VENDOR_GUID);
 531                 if (!err) {
 532                         if (!csata)
 533                                 csata = add_orom(&orom);
 534                         add_orom_device_id(csata, hba->dev_id);
 535                         return &csata->orom;
 536                 }
 537         }
 538
 539         if (err)
 540                 return NULL;
 541
 542         ret = add_orom(&orom);
 543         add_orom_device_id(ret, hba->dev_id);
 544
 545         return &ret->orom;
 546 }
 547
 548 const struct imsm_orom *find_imsm_nvme(struct sys_dev *hba)
 549 {
 550         static struct orom_entry *nvme_orom;
 551
 552         if (hba->type != SYS_DEV_NVME)
 553                 return NULL;
 554
 555         if (!nvme_orom) {
 556                 struct imsm_orom nvme_orom_compat = {
 557                         .signature = IMSM_NVME_OROM_COMPAT_SIGNATURE,
 558                         .rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 |
 559                                                 IMSM_OROM_RLC_RAID10 | IMSM_OROM_RLC_RAID5,
 560                         .sss = IMSM_OROM_SSS_4kB | IMSM_OROM_SSS_8kB |
 561                                                 IMSM_OROM_SSS_16kB | IMSM_OROM_SSS_32kB |
 562                                                 IMSM_OROM_SSS_64kB | IMSM_OROM_SSS_128kB,
 563                         .dpa = IMSM_OROM_DISKS_PER_ARRAY_NVME,
 564                         .tds = IMSM_OROM_TOTAL_DISKS_NVME,
 565                         .vpa = IMSM_OROM_VOLUMES_PER_ARRAY,
 566                         .vphba = IMSM_OROM_TOTAL_DISKS_NVME / 2 * IMSM_OROM_VOLUMES_PER_ARRAY,
 567                         .attr = IMSM_OROM_ATTR_2TB | IMSM_OROM_ATTR_2TB_DISK,
 568                         .driver_features = IMSM_OROM_CAPABILITIES_EnterpriseSystem
 569                 };
 570                 nvme_orom = add_orom(&nvme_orom_compat);
 571         }
 572         add_orom_device_id(nvme_orom, hba->dev_id);
 573         return &nvme_orom->orom;
 574 }
 575
 576 const struct imsm_orom *find_imsm_capability(struct sys_dev *hba)
 577 {
 578         const struct imsm_orom *cap = get_orom_by_device_id(hba->dev_id);
 579
 580         if (cap)
 581                 return cap;
 582
 583         if (hba->type == SYS_DEV_NVME)
 584                 return find_imsm_nvme(hba);
 585         if ((cap = find_imsm_efi(hba)) != NULL)
 586                 return cap;
 587         if ((cap = find_imsm_hba_orom(hba)) != NULL)
 588                 return cap;
 589
 590         return NULL;
 591 }
 592
 593 char *devt_to_devpath(dev_t dev)
 594 {
 595         char device[46];
 596
 597         sprintf(device, "/sys/dev/block/%d:%d/device", major(dev), minor(dev));
 598         return realpath(device, NULL);
 599 }
 600
 601 char *diskfd_to_devpath(int fd)
 602 {
 603         /* return the device path for a disk, return NULL on error or fd
 604          * refers to a partition
 605          */
 606         struct stat st;
 607
 608         if (fstat(fd, &st) != 0)
 609                 return NULL;
 610         if (!S_ISBLK(st.st_mode))
 611                 return NULL;
 612
 613         return devt_to_devpath(st.st_rdev);
 614 }
 615
 616 int path_attached_to_hba(const char *disk_path, const char *hba_path)
 617 {
 618         int rc;
 619
 620         if (check_env("IMSM_TEST_AHCI_DEV") ||
 621             check_env("IMSM_TEST_SCU_DEV")) {
 622                 return 1;
 623         }
 624
 625         if (!disk_path || !hba_path)
 626                 return 0;
 627         dprintf("hba: %s - disk: %s\n", hba_path, disk_path);
 628         if (strncmp(disk_path, hba_path, strlen(hba_path)) == 0)
 629                 rc = 1;
 630         else
 631                 rc = 0;
 632
 633         return rc;
 634 }
 635
 636 int devt_attached_to_hba(dev_t dev, const char *hba_path)
 637 {
 638         char *disk_path = devt_to_devpath(dev);
 639         int rc = path_attached_to_hba(disk_path, hba_path);
 640
 641         if (disk_path)
 642                 free(disk_path);
 643
 644         return rc;
 645 }
 646
 647 int disk_attached_to_hba(int fd, const char *hba_path)
 648 {
 649         char *disk_path = diskfd_to_devpath(fd);
 650         int rc = path_attached_to_hba(disk_path, hba_path);
 651
 652         if (disk_path)
 653                 free(disk_path);
 654
 655         return rc;
 656 }