| 1 |
/* $MidnightBSD$ */ |
| 2 |
/*- |
| 3 |
* Copyright (c) 2005-2006 The FreeBSD Project |
| 4 |
* All rights reserved. |
| 5 |
* |
| 6 |
* Author: Victor Cruceru <soc-victor@freebsd.org> |
| 7 |
* |
| 8 |
* Redistribution of this software and documentation and use in source and |
| 9 |
* binary forms, with or without modification, are permitted provided that |
| 10 |
* the following conditions are met: |
| 11 |
* |
| 12 |
* 1. Redistributions of source code or documentation must retain the above |
| 13 |
* copyright notice, this list of conditions and the following disclaimer. |
| 14 |
* 2. Redistributions in binary form must reproduce the above copyright |
| 15 |
* notice, this list of conditions and the following disclaimer in the |
| 16 |
* documentation and/or other materials provided with the distribution. |
| 17 |
* |
| 18 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 19 |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 22 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 23 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 24 |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 25 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 26 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 27 |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 |
* SUCH DAMAGE. |
| 29 |
* |
| 30 |
* $FreeBSD: stable/10/usr.sbin/bsnmpd/modules/snmp_hostres/hostres_diskstorage_tbl.c 240595 2012-09-17 07:32:53Z trociny $ |
| 31 |
*/ |
| 32 |
|
| 33 |
/* |
| 34 |
* Host Resources MIB for SNMPd. Implementation for the hrDiskStorageTable |
| 35 |
*/ |
| 36 |
|
| 37 |
#include <sys/types.h> |
| 38 |
#include <sys/param.h> |
| 39 |
#include <sys/ata.h> |
| 40 |
#include <sys/disk.h> |
| 41 |
#include <sys/linker.h> |
| 42 |
#include <sys/mdioctl.h> |
| 43 |
#include <sys/module.h> |
| 44 |
#include <sys/sysctl.h> |
| 45 |
|
| 46 |
#include <assert.h> |
| 47 |
#include <ctype.h> |
| 48 |
#include <err.h> |
| 49 |
#include <errno.h> |
| 50 |
#include <paths.h> |
| 51 |
#include <stdlib.h> |
| 52 |
#include <string.h> |
| 53 |
#include <syslog.h> |
| 54 |
#include <unistd.h> |
| 55 |
|
| 56 |
#include "hostres_snmp.h" |
| 57 |
#include "hostres_oid.h" |
| 58 |
#include "hostres_tree.h" |
| 59 |
|
| 60 |
enum hrDiskStrorageAccess { |
| 61 |
DS_READ_WRITE = 1, |
| 62 |
DS_READ_ONLY = 2 |
| 63 |
}; |
| 64 |
|
| 65 |
enum hrDiskStrorageMedia { |
| 66 |
DSM_OTHER = 1, |
| 67 |
DSM_UNKNOWN = 2, |
| 68 |
DSM_HARDDISK = 3, |
| 69 |
DSM_FLOPPYDISK = 4, |
| 70 |
DSM_OPTICALDISKROM= 5, |
| 71 |
DSM_OPTICALDISKWORM= 6, |
| 72 |
DSM_OPTICALDISKRW= 7, |
| 73 |
DSM_RAMDISK = 8 |
| 74 |
}; |
| 75 |
|
| 76 |
/* |
| 77 |
* This structure is used to hold a SNMP table entry for HOST-RESOURCES-MIB's |
| 78 |
* hrDiskStorageTable. Note that index is external being allocated and |
| 79 |
* maintained by the hrDeviceTable code. |
| 80 |
* |
| 81 |
* NOTE: according to MIB removable means removable media, not the |
| 82 |
* device itself (like a USB card reader) |
| 83 |
*/ |
| 84 |
struct disk_entry { |
| 85 |
int32_t index; |
| 86 |
int32_t access; /* enum hrDiskStrorageAccess */ |
| 87 |
int32_t media; /* enum hrDiskStrorageMedia*/ |
| 88 |
int32_t removable; /* enum snmpTCTruthValue*/ |
| 89 |
int32_t capacity; |
| 90 |
TAILQ_ENTRY(disk_entry) link; |
| 91 |
/* |
| 92 |
* next items are not from the SNMP mib table, only to be used |
| 93 |
* internally |
| 94 |
*/ |
| 95 |
#define HR_DISKSTORAGE_FOUND 0x001 |
| 96 |
#define HR_DISKSTORAGE_ATA 0x002 /* belongs to the ATA subsystem */ |
| 97 |
#define HR_DISKSTORAGE_MD 0x004 /* it is a MD (memory disk) */ |
| 98 |
uint32_t flags; |
| 99 |
uint64_t r_tick; |
| 100 |
u_char dev_name[32]; /* device name, i.e. "ad4" or "acd0" */ |
| 101 |
}; |
| 102 |
TAILQ_HEAD(disk_tbl, disk_entry); |
| 103 |
|
| 104 |
/* the head of the list with hrDiskStorageTable's entries */ |
| 105 |
static struct disk_tbl disk_tbl = |
| 106 |
TAILQ_HEAD_INITIALIZER(disk_tbl); |
| 107 |
|
| 108 |
/* last tick when hrFSTable was updated */ |
| 109 |
static uint64_t disk_storage_tick; |
| 110 |
|
| 111 |
/* minimum number of ticks between refreshs */ |
| 112 |
uint32_t disk_storage_tbl_refresh = HR_DISK_TBL_REFRESH * 100; |
| 113 |
|
| 114 |
/* fd for "/dev/mdctl"*/ |
| 115 |
static int md_fd = -1; |
| 116 |
|
| 117 |
/* buffer for sysctl("kern.disks") */ |
| 118 |
static char *disk_list; |
| 119 |
static size_t disk_list_len; |
| 120 |
|
| 121 |
/* some constants */ |
| 122 |
static const struct asn_oid OIDX_hrDeviceDiskStorage_c = |
| 123 |
OIDX_hrDeviceDiskStorage; |
| 124 |
|
| 125 |
/** |
| 126 |
* Load the MD driver if it isn't loaded already. |
| 127 |
*/ |
| 128 |
static void |
| 129 |
mdmaybeload(void) |
| 130 |
{ |
| 131 |
char name1[64], name2[64]; |
| 132 |
|
| 133 |
snprintf(name1, sizeof(name1), "g_%s", MD_NAME); |
| 134 |
snprintf(name2, sizeof(name2), "geom_%s", MD_NAME); |
| 135 |
if (modfind(name1) == -1) { |
| 136 |
/* Not present in kernel, try loading it. */ |
| 137 |
if (kldload(name2) == -1 || modfind(name1) == -1) { |
| 138 |
if (errno != EEXIST) { |
| 139 |
errx(EXIT_FAILURE, |
| 140 |
"%s module not available!", name2); |
| 141 |
} |
| 142 |
} |
| 143 |
} |
| 144 |
} |
| 145 |
|
| 146 |
/** |
| 147 |
* Create a new entry into the DiskStorageTable. |
| 148 |
*/ |
| 149 |
static struct disk_entry * |
| 150 |
disk_entry_create(const struct device_entry *devEntry) |
| 151 |
{ |
| 152 |
struct disk_entry *entry; |
| 153 |
|
| 154 |
assert(devEntry != NULL); |
| 155 |
if (devEntry == NULL) |
| 156 |
return NULL; |
| 157 |
|
| 158 |
if ((entry = malloc(sizeof(*entry))) == NULL) { |
| 159 |
syslog(LOG_WARNING, "hrDiskStorageTable: %s: %m", __func__); |
| 160 |
return (NULL); |
| 161 |
} |
| 162 |
|
| 163 |
memset(entry, 0, sizeof(*entry)); |
| 164 |
entry->index = devEntry->index; |
| 165 |
INSERT_OBJECT_INT(entry, &disk_tbl); |
| 166 |
|
| 167 |
return (entry); |
| 168 |
} |
| 169 |
|
| 170 |
/** |
| 171 |
* Delete a disk table entry. |
| 172 |
*/ |
| 173 |
static void |
| 174 |
disk_entry_delete(struct disk_entry *entry) |
| 175 |
{ |
| 176 |
struct device_entry *devEntry; |
| 177 |
|
| 178 |
assert(entry != NULL); |
| 179 |
TAILQ_REMOVE(&disk_tbl, entry, link); |
| 180 |
|
| 181 |
devEntry = device_find_by_index(entry->index); |
| 182 |
|
| 183 |
free(entry); |
| 184 |
|
| 185 |
/* |
| 186 |
* Also delete the respective device entry - |
| 187 |
* this is needed for disk devices that are not |
| 188 |
* detected by libdevinfo |
| 189 |
*/ |
| 190 |
if (devEntry != NULL && |
| 191 |
(devEntry->flags & HR_DEVICE_IMMUTABLE) == HR_DEVICE_IMMUTABLE) |
| 192 |
device_entry_delete(devEntry); |
| 193 |
} |
| 194 |
|
| 195 |
/** |
| 196 |
* Find a disk storage entry given its index. |
| 197 |
*/ |
| 198 |
static struct disk_entry * |
| 199 |
disk_find_by_index(int32_t idx) |
| 200 |
{ |
| 201 |
struct disk_entry *entry; |
| 202 |
|
| 203 |
TAILQ_FOREACH(entry, &disk_tbl, link) |
| 204 |
if (entry->index == idx) |
| 205 |
return (entry); |
| 206 |
|
| 207 |
return (NULL); |
| 208 |
} |
| 209 |
|
| 210 |
/** |
| 211 |
* Get the disk parameters |
| 212 |
*/ |
| 213 |
static void |
| 214 |
disk_query_disk(struct disk_entry *entry) |
| 215 |
{ |
| 216 |
char dev_path[128]; |
| 217 |
int fd; |
| 218 |
off_t mediasize; |
| 219 |
|
| 220 |
if (entry == NULL || entry->dev_name[0] == '\0') |
| 221 |
return; |
| 222 |
|
| 223 |
snprintf(dev_path, sizeof(dev_path), |
| 224 |
"%s%s", _PATH_DEV, entry->dev_name); |
| 225 |
entry->capacity = 0; |
| 226 |
|
| 227 |
HRDBG("OPENING device %s", dev_path); |
| 228 |
if ((fd = open(dev_path, O_RDONLY|O_NONBLOCK)) == -1) { |
| 229 |
HRDBG("OPEN device %s failed: %s", dev_path, strerror(errno)); |
| 230 |
return; |
| 231 |
} |
| 232 |
|
| 233 |
if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) < 0) { |
| 234 |
HRDBG("DIOCGMEDIASIZE for device %s failed: %s", |
| 235 |
dev_path, strerror(errno)); |
| 236 |
(void)close(fd); |
| 237 |
return; |
| 238 |
} |
| 239 |
|
| 240 |
mediasize = mediasize / 1024; |
| 241 |
entry->capacity = (mediasize > INT_MAX ? INT_MAX : mediasize); |
| 242 |
partition_tbl_handle_disk(entry->index, entry->dev_name); |
| 243 |
|
| 244 |
(void)close(fd); |
| 245 |
} |
| 246 |
|
| 247 |
/** |
| 248 |
* Find all ATA disks in the device table. |
| 249 |
*/ |
| 250 |
static void |
| 251 |
disk_OS_get_ATA_disks(void) |
| 252 |
{ |
| 253 |
struct device_map_entry *map; |
| 254 |
struct device_entry *entry; |
| 255 |
struct disk_entry *disk_entry; |
| 256 |
const struct disk_entry *found; |
| 257 |
|
| 258 |
/* Things we know are ata disks */ |
| 259 |
static const struct disk_entry lookup[] = { |
| 260 |
{ |
| 261 |
.dev_name = "ad", |
| 262 |
.media = DSM_HARDDISK, |
| 263 |
.removable = SNMP_FALSE |
| 264 |
}, |
| 265 |
{ |
| 266 |
.dev_name = "ar", |
| 267 |
.media = DSM_OTHER, |
| 268 |
.removable = SNMP_FALSE |
| 269 |
}, |
| 270 |
{ |
| 271 |
.dev_name = "acd", |
| 272 |
.media = DSM_OPTICALDISKROM, |
| 273 |
.removable = SNMP_TRUE |
| 274 |
}, |
| 275 |
{ |
| 276 |
.dev_name = "afd", |
| 277 |
.media = DSM_FLOPPYDISK, |
| 278 |
.removable = SNMP_TRUE |
| 279 |
}, |
| 280 |
{ |
| 281 |
.dev_name = "ast", |
| 282 |
.media = DSM_OTHER, |
| 283 |
.removable = SNMP_TRUE |
| 284 |
}, |
| 285 |
|
| 286 |
{ .media = DSM_UNKNOWN } |
| 287 |
}; |
| 288 |
|
| 289 |
/* Walk over the device table looking for ata disks */ |
| 290 |
STAILQ_FOREACH(map, &device_map, link) { |
| 291 |
/* Skip deleted entries. */ |
| 292 |
if (map->entry_p == NULL) |
| 293 |
continue; |
| 294 |
for (found = lookup; found->media != DSM_UNKNOWN; found++) { |
| 295 |
if (strncmp(map->name_key, found->dev_name, |
| 296 |
strlen(found->dev_name)) != 0) |
| 297 |
continue; |
| 298 |
|
| 299 |
/* |
| 300 |
* Avoid false disk devices. For example adw(4) and |
| 301 |
* adv(4) - they are not disks! |
| 302 |
*/ |
| 303 |
if (strlen(map->name_key) > strlen(found->dev_name) && |
| 304 |
!isdigit(map->name_key[strlen(found->dev_name)])) |
| 305 |
continue; |
| 306 |
|
| 307 |
/* First get the entry from the hrDeviceTbl */ |
| 308 |
entry = map->entry_p; |
| 309 |
entry->type = &OIDX_hrDeviceDiskStorage_c; |
| 310 |
|
| 311 |
/* Then check hrDiskStorage table for this device */ |
| 312 |
disk_entry = disk_find_by_index(entry->index); |
| 313 |
if (disk_entry == NULL) { |
| 314 |
disk_entry = disk_entry_create(entry); |
| 315 |
if (disk_entry == NULL) |
| 316 |
continue; |
| 317 |
|
| 318 |
disk_entry->access = DS_READ_WRITE; |
| 319 |
strlcpy(disk_entry->dev_name, entry->name, |
| 320 |
sizeof(disk_entry->dev_name)); |
| 321 |
|
| 322 |
disk_entry->media = found->media; |
| 323 |
disk_entry->removable = found->removable; |
| 324 |
} |
| 325 |
|
| 326 |
disk_entry->flags |= HR_DISKSTORAGE_FOUND; |
| 327 |
disk_entry->flags |= HR_DISKSTORAGE_ATA; |
| 328 |
|
| 329 |
disk_query_disk(disk_entry); |
| 330 |
disk_entry->r_tick = this_tick; |
| 331 |
} |
| 332 |
} |
| 333 |
} |
| 334 |
|
| 335 |
/** |
| 336 |
* Find MD disks in the device table. |
| 337 |
*/ |
| 338 |
static void |
| 339 |
disk_OS_get_MD_disks(void) |
| 340 |
{ |
| 341 |
struct device_map_entry *map; |
| 342 |
struct device_entry *entry; |
| 343 |
struct disk_entry *disk_entry; |
| 344 |
struct md_ioctl mdio; |
| 345 |
int unit; |
| 346 |
|
| 347 |
if (md_fd <= 0) |
| 348 |
return; |
| 349 |
|
| 350 |
/* Look for md devices */ |
| 351 |
STAILQ_FOREACH(map, &device_map, link) { |
| 352 |
/* Skip deleted entries. */ |
| 353 |
if (map->entry_p == NULL) |
| 354 |
continue; |
| 355 |
if (sscanf(map->name_key, "md%d", &unit) != 1) |
| 356 |
continue; |
| 357 |
|
| 358 |
/* First get the entry from the hrDeviceTbl */ |
| 359 |
entry = device_find_by_index(map->hrIndex); |
| 360 |
entry->type = &OIDX_hrDeviceDiskStorage_c; |
| 361 |
|
| 362 |
/* Then check hrDiskStorage table for this device */ |
| 363 |
disk_entry = disk_find_by_index(entry->index); |
| 364 |
if (disk_entry == NULL) { |
| 365 |
disk_entry = disk_entry_create(entry); |
| 366 |
if (disk_entry == NULL) |
| 367 |
continue; |
| 368 |
|
| 369 |
memset(&mdio, 0, sizeof(mdio)); |
| 370 |
mdio.md_version = MDIOVERSION; |
| 371 |
mdio.md_unit = unit; |
| 372 |
|
| 373 |
if (ioctl(md_fd, MDIOCQUERY, &mdio) < 0) { |
| 374 |
syslog(LOG_ERR, |
| 375 |
"hrDiskStorageTable: Couldnt ioctl"); |
| 376 |
continue; |
| 377 |
} |
| 378 |
|
| 379 |
if ((mdio.md_options & MD_READONLY) == MD_READONLY) |
| 380 |
disk_entry->access = DS_READ_ONLY; |
| 381 |
else |
| 382 |
disk_entry->access = DS_READ_WRITE; |
| 383 |
|
| 384 |
strlcpy(disk_entry->dev_name, entry->name, |
| 385 |
sizeof(disk_entry->dev_name)); |
| 386 |
|
| 387 |
disk_entry->media = DSM_RAMDISK; |
| 388 |
disk_entry->removable = SNMP_FALSE; |
| 389 |
} |
| 390 |
|
| 391 |
disk_entry->flags |= HR_DISKSTORAGE_FOUND; |
| 392 |
disk_entry->flags |= HR_DISKSTORAGE_MD; |
| 393 |
disk_entry->r_tick = this_tick; |
| 394 |
} |
| 395 |
} |
| 396 |
|
| 397 |
/** |
| 398 |
* Find rest of disks |
| 399 |
*/ |
| 400 |
static void |
| 401 |
disk_OS_get_disks(void) |
| 402 |
{ |
| 403 |
size_t disk_cnt = 0; |
| 404 |
struct device_entry *entry; |
| 405 |
struct disk_entry *disk_entry; |
| 406 |
|
| 407 |
size_t need = 0; |
| 408 |
|
| 409 |
if (sysctlbyname("kern.disks", NULL, &need, NULL, 0) == -1) { |
| 410 |
syslog(LOG_ERR, "%s: sysctl_1 kern.disks failed: %m", __func__); |
| 411 |
return; |
| 412 |
} |
| 413 |
|
| 414 |
if (need == 0) |
| 415 |
return; |
| 416 |
|
| 417 |
if (disk_list_len != need + 1 || disk_list == NULL) { |
| 418 |
disk_list_len = need + 1; |
| 419 |
disk_list = reallocf(disk_list, disk_list_len); |
| 420 |
} |
| 421 |
|
| 422 |
if (disk_list == NULL) { |
| 423 |
syslog(LOG_ERR, "%s: reallocf failed", __func__); |
| 424 |
disk_list_len = 0; |
| 425 |
return; |
| 426 |
} |
| 427 |
|
| 428 |
memset(disk_list, 0, disk_list_len); |
| 429 |
|
| 430 |
if (sysctlbyname("kern.disks", disk_list, &need, NULL, 0) == -1 || |
| 431 |
disk_list[0] == 0) { |
| 432 |
syslog(LOG_ERR, "%s: sysctl_2 kern.disks failed: %m", __func__); |
| 433 |
return; |
| 434 |
} |
| 435 |
|
| 436 |
for (disk_cnt = 0; disk_cnt < need; disk_cnt++) { |
| 437 |
char *disk = NULL; |
| 438 |
char disk_device[128] = ""; |
| 439 |
|
| 440 |
disk = strsep(&disk_list, " "); |
| 441 |
if (disk == NULL) |
| 442 |
break; |
| 443 |
|
| 444 |
snprintf(disk_device, sizeof(disk_device), |
| 445 |
"%s%s", _PATH_DEV, disk); |
| 446 |
|
| 447 |
/* First check if the disk is in the hrDeviceTable. */ |
| 448 |
if ((entry = device_find_by_name(disk)) == NULL) { |
| 449 |
/* |
| 450 |
* not found there - insert it as immutable |
| 451 |
*/ |
| 452 |
syslog(LOG_WARNING, "%s: adding device '%s' to " |
| 453 |
"device list", __func__, disk); |
| 454 |
|
| 455 |
if ((entry = device_entry_create(disk, "", "")) == NULL) |
| 456 |
continue; |
| 457 |
|
| 458 |
entry->flags |= HR_DEVICE_IMMUTABLE; |
| 459 |
} |
| 460 |
|
| 461 |
entry->type = &OIDX_hrDeviceDiskStorage_c; |
| 462 |
|
| 463 |
/* Then check hrDiskStorage table for this device */ |
| 464 |
disk_entry = disk_find_by_index(entry->index); |
| 465 |
if (disk_entry == NULL) { |
| 466 |
disk_entry = disk_entry_create(entry); |
| 467 |
if (disk_entry == NULL) |
| 468 |
continue; |
| 469 |
} |
| 470 |
|
| 471 |
disk_entry->flags |= HR_DISKSTORAGE_FOUND; |
| 472 |
|
| 473 |
if ((disk_entry->flags & HR_DISKSTORAGE_ATA) || |
| 474 |
(disk_entry->flags & HR_DISKSTORAGE_MD)) { |
| 475 |
/* |
| 476 |
* ATA/MD detection is running before this one, |
| 477 |
* so don't waste the time here |
| 478 |
*/ |
| 479 |
continue; |
| 480 |
} |
| 481 |
|
| 482 |
disk_entry->access = DS_READ_WRITE; |
| 483 |
disk_entry->media = DSM_UNKNOWN; |
| 484 |
disk_entry->removable = SNMP_FALSE; |
| 485 |
|
| 486 |
if (strncmp(disk_entry->dev_name, "da", 2) == 0 || |
| 487 |
strncmp(disk_entry->dev_name, "ada", 3) == 0) { |
| 488 |
disk_entry->media = DSM_HARDDISK; |
| 489 |
disk_entry->removable = SNMP_FALSE; |
| 490 |
} else if (strncmp(disk_entry->dev_name, "cd", 2) == 0) { |
| 491 |
disk_entry->media = DSM_OPTICALDISKROM; |
| 492 |
disk_entry->removable = SNMP_TRUE; |
| 493 |
} else { |
| 494 |
disk_entry->media = DSM_UNKNOWN; |
| 495 |
disk_entry->removable = SNMP_FALSE; |
| 496 |
} |
| 497 |
|
| 498 |
strlcpy((char *)disk_entry->dev_name, disk, |
| 499 |
sizeof(disk_entry->dev_name)); |
| 500 |
|
| 501 |
disk_query_disk(disk_entry); |
| 502 |
disk_entry->r_tick = this_tick; |
| 503 |
} |
| 504 |
} |
| 505 |
|
| 506 |
/** |
| 507 |
* Refresh routine for hrDiskStorageTable |
| 508 |
* Usable for polling the system for any changes. |
| 509 |
*/ |
| 510 |
void |
| 511 |
refresh_disk_storage_tbl(int force) |
| 512 |
{ |
| 513 |
struct disk_entry *entry, *entry_tmp; |
| 514 |
|
| 515 |
if (disk_storage_tick != 0 && !force && |
| 516 |
this_tick - disk_storage_tick < disk_storage_tbl_refresh) { |
| 517 |
HRDBG("no refresh needed"); |
| 518 |
return; |
| 519 |
} |
| 520 |
|
| 521 |
partition_tbl_pre_refresh(); |
| 522 |
|
| 523 |
/* mark each entry as missing */ |
| 524 |
TAILQ_FOREACH(entry, &disk_tbl, link) |
| 525 |
entry->flags &= ~HR_DISKSTORAGE_FOUND; |
| 526 |
|
| 527 |
disk_OS_get_ATA_disks(); /* this must be called first ! */ |
| 528 |
disk_OS_get_MD_disks(); |
| 529 |
disk_OS_get_disks(); |
| 530 |
|
| 531 |
/* |
| 532 |
* Purge items that disappeared |
| 533 |
*/ |
| 534 |
TAILQ_FOREACH_SAFE(entry, &disk_tbl, link, entry_tmp) |
| 535 |
if (!(entry->flags & HR_DISKSTORAGE_FOUND)) |
| 536 |
/* XXX remove IMMUTABLE entries that have disappeared */ |
| 537 |
disk_entry_delete(entry); |
| 538 |
|
| 539 |
disk_storage_tick = this_tick; |
| 540 |
|
| 541 |
partition_tbl_post_refresh(); |
| 542 |
|
| 543 |
HRDBG("refresh DONE"); |
| 544 |
} |
| 545 |
|
| 546 |
/* |
| 547 |
* Init the things for both of hrDiskStorageTable |
| 548 |
*/ |
| 549 |
int |
| 550 |
init_disk_storage_tbl(void) |
| 551 |
{ |
| 552 |
char mddev[32] = ""; |
| 553 |
|
| 554 |
/* Try to load md.ko if not loaded already */ |
| 555 |
mdmaybeload(); |
| 556 |
|
| 557 |
md_fd = -1; |
| 558 |
snprintf(mddev, sizeof(mddev) - 1, "%s%s", _PATH_DEV, MDCTL_NAME); |
| 559 |
if ((md_fd = open(mddev, O_RDWR)) == -1) { |
| 560 |
syslog(LOG_ERR, "open %s failed - will not include md(4) " |
| 561 |
"info: %m", mddev); |
| 562 |
} |
| 563 |
|
| 564 |
refresh_disk_storage_tbl(1); |
| 565 |
|
| 566 |
return (0); |
| 567 |
} |
| 568 |
|
| 569 |
/* |
| 570 |
* Finalization routine for hrDiskStorageTable |
| 571 |
* It destroys the lists and frees any allocated heap memory |
| 572 |
*/ |
| 573 |
void |
| 574 |
fini_disk_storage_tbl(void) |
| 575 |
{ |
| 576 |
struct disk_entry *n1; |
| 577 |
|
| 578 |
while ((n1 = TAILQ_FIRST(&disk_tbl)) != NULL) { |
| 579 |
TAILQ_REMOVE(&disk_tbl, n1, link); |
| 580 |
free(n1); |
| 581 |
} |
| 582 |
|
| 583 |
free(disk_list); |
| 584 |
|
| 585 |
if (md_fd > 0) { |
| 586 |
if (close(md_fd) == -1) |
| 587 |
syslog(LOG_ERR,"close (/dev/mdctl) failed: %m"); |
| 588 |
md_fd = -1; |
| 589 |
} |
| 590 |
} |
| 591 |
|
| 592 |
/* |
| 593 |
* This is the implementation for a generated (by our SNMP "compiler" tool) |
| 594 |
* function prototype, see hostres_tree.h |
| 595 |
* It handles the SNMP operations for hrDiskStorageTable |
| 596 |
*/ |
| 597 |
int |
| 598 |
op_hrDiskStorageTable(struct snmp_context *ctx __unused, |
| 599 |
struct snmp_value *value, u_int sub, u_int iidx __unused, |
| 600 |
enum snmp_op curr_op) |
| 601 |
{ |
| 602 |
struct disk_entry *entry; |
| 603 |
|
| 604 |
refresh_disk_storage_tbl(0); |
| 605 |
|
| 606 |
switch (curr_op) { |
| 607 |
|
| 608 |
case SNMP_OP_GETNEXT: |
| 609 |
if ((entry = NEXT_OBJECT_INT(&disk_tbl, |
| 610 |
&value->var, sub)) == NULL) |
| 611 |
return (SNMP_ERR_NOSUCHNAME); |
| 612 |
value->var.len = sub + 1; |
| 613 |
value->var.subs[sub] = entry->index; |
| 614 |
goto get; |
| 615 |
|
| 616 |
case SNMP_OP_GET: |
| 617 |
if ((entry = FIND_OBJECT_INT(&disk_tbl, |
| 618 |
&value->var, sub)) == NULL) |
| 619 |
return (SNMP_ERR_NOSUCHNAME); |
| 620 |
goto get; |
| 621 |
|
| 622 |
case SNMP_OP_SET: |
| 623 |
if ((entry = FIND_OBJECT_INT(&disk_tbl, |
| 624 |
&value->var, sub)) == NULL) |
| 625 |
return (SNMP_ERR_NO_CREATION); |
| 626 |
return (SNMP_ERR_NOT_WRITEABLE); |
| 627 |
|
| 628 |
case SNMP_OP_ROLLBACK: |
| 629 |
case SNMP_OP_COMMIT: |
| 630 |
abort(); |
| 631 |
} |
| 632 |
abort(); |
| 633 |
|
| 634 |
get: |
| 635 |
switch (value->var.subs[sub - 1]) { |
| 636 |
|
| 637 |
case LEAF_hrDiskStorageAccess: |
| 638 |
value->v.integer = entry->access; |
| 639 |
return (SNMP_ERR_NOERROR); |
| 640 |
|
| 641 |
case LEAF_hrDiskStorageMedia: |
| 642 |
value->v.integer = entry->media; |
| 643 |
return (SNMP_ERR_NOERROR); |
| 644 |
|
| 645 |
case LEAF_hrDiskStorageRemovable: |
| 646 |
value->v.integer = entry->removable; |
| 647 |
return (SNMP_ERR_NOERROR); |
| 648 |
|
| 649 |
case LEAF_hrDiskStorageCapacity: |
| 650 |
value->v.integer = entry->capacity; |
| 651 |
return (SNMP_ERR_NOERROR); |
| 652 |
} |
| 653 |
abort(); |
| 654 |
} |
