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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Export the iSCSI boot info to userland via sysfs.4 *5 * Copyright (C) 2010 Red Hat, Inc. All rights reserved.6 * Copyright (C) 2010 Mike Christie7 */8 9#include <linux/module.h>10#include <linux/string.h>11#include <linux/slab.h>12#include <linux/sysfs.h>13#include <linux/capability.h>14#include <linux/iscsi_boot_sysfs.h>15 16 17MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>");18MODULE_DESCRIPTION("sysfs interface and helpers to export iSCSI boot information");19MODULE_LICENSE("GPL");20/*21 * The kobject and attribute structures.22 */23struct iscsi_boot_attr {24 struct attribute attr;25 int type;26 ssize_t (*show) (void *data, int type, char *buf);27};28 29/*30 * The routine called for all sysfs attributes.31 */32static ssize_t iscsi_boot_show_attribute(struct kobject *kobj,33 struct attribute *attr, char *buf)34{35 struct iscsi_boot_kobj *boot_kobj =36 container_of(kobj, struct iscsi_boot_kobj, kobj);37 struct iscsi_boot_attr *boot_attr =38 container_of(attr, struct iscsi_boot_attr, attr);39 ssize_t ret = -EIO;40 char *str = buf;41 42 if (!capable(CAP_SYS_ADMIN))43 return -EACCES;44 45 if (boot_kobj->show)46 ret = boot_kobj->show(boot_kobj->data, boot_attr->type, str);47 return ret;48}49 50static const struct sysfs_ops iscsi_boot_attr_ops = {51 .show = iscsi_boot_show_attribute,52};53 54static void iscsi_boot_kobj_release(struct kobject *kobj)55{56 struct iscsi_boot_kobj *boot_kobj =57 container_of(kobj, struct iscsi_boot_kobj, kobj);58 59 if (boot_kobj->release)60 boot_kobj->release(boot_kobj->data);61 kfree(boot_kobj);62}63 64static struct kobj_type iscsi_boot_ktype = {65 .release = iscsi_boot_kobj_release,66 .sysfs_ops = &iscsi_boot_attr_ops,67};68 69#define iscsi_boot_rd_attr(fnname, sysfs_name, attr_type) \70static struct iscsi_boot_attr iscsi_boot_attr_##fnname = { \71 .attr = { .name = __stringify(sysfs_name), .mode = 0444 }, \72 .type = attr_type, \73}74 75/* Target attrs */76iscsi_boot_rd_attr(tgt_index, index, ISCSI_BOOT_TGT_INDEX);77iscsi_boot_rd_attr(tgt_flags, flags, ISCSI_BOOT_TGT_FLAGS);78iscsi_boot_rd_attr(tgt_ip, ip-addr, ISCSI_BOOT_TGT_IP_ADDR);79iscsi_boot_rd_attr(tgt_port, port, ISCSI_BOOT_TGT_PORT);80iscsi_boot_rd_attr(tgt_lun, lun, ISCSI_BOOT_TGT_LUN);81iscsi_boot_rd_attr(tgt_chap, chap-type, ISCSI_BOOT_TGT_CHAP_TYPE);82iscsi_boot_rd_attr(tgt_nic, nic-assoc, ISCSI_BOOT_TGT_NIC_ASSOC);83iscsi_boot_rd_attr(tgt_name, target-name, ISCSI_BOOT_TGT_NAME);84iscsi_boot_rd_attr(tgt_chap_name, chap-name, ISCSI_BOOT_TGT_CHAP_NAME);85iscsi_boot_rd_attr(tgt_chap_secret, chap-secret, ISCSI_BOOT_TGT_CHAP_SECRET);86iscsi_boot_rd_attr(tgt_chap_rev_name, rev-chap-name,87 ISCSI_BOOT_TGT_REV_CHAP_NAME);88iscsi_boot_rd_attr(tgt_chap_rev_secret, rev-chap-name-secret,89 ISCSI_BOOT_TGT_REV_CHAP_SECRET);90 91static struct attribute *target_attrs[] = {92 &iscsi_boot_attr_tgt_index.attr,93 &iscsi_boot_attr_tgt_flags.attr,94 &iscsi_boot_attr_tgt_ip.attr,95 &iscsi_boot_attr_tgt_port.attr,96 &iscsi_boot_attr_tgt_lun.attr,97 &iscsi_boot_attr_tgt_chap.attr,98 &iscsi_boot_attr_tgt_nic.attr,99 &iscsi_boot_attr_tgt_name.attr,100 &iscsi_boot_attr_tgt_chap_name.attr,101 &iscsi_boot_attr_tgt_chap_secret.attr,102 &iscsi_boot_attr_tgt_chap_rev_name.attr,103 &iscsi_boot_attr_tgt_chap_rev_secret.attr,104 NULL105};106 107static umode_t iscsi_boot_tgt_attr_is_visible(struct kobject *kobj,108 struct attribute *attr, int i)109{110 struct iscsi_boot_kobj *boot_kobj =111 container_of(kobj, struct iscsi_boot_kobj, kobj);112 113 if (attr == &iscsi_boot_attr_tgt_index.attr)114 return boot_kobj->is_visible(boot_kobj->data,115 ISCSI_BOOT_TGT_INDEX);116 else if (attr == &iscsi_boot_attr_tgt_flags.attr)117 return boot_kobj->is_visible(boot_kobj->data,118 ISCSI_BOOT_TGT_FLAGS);119 else if (attr == &iscsi_boot_attr_tgt_ip.attr)120 return boot_kobj->is_visible(boot_kobj->data,121 ISCSI_BOOT_TGT_IP_ADDR);122 else if (attr == &iscsi_boot_attr_tgt_port.attr)123 return boot_kobj->is_visible(boot_kobj->data,124 ISCSI_BOOT_TGT_PORT);125 else if (attr == &iscsi_boot_attr_tgt_lun.attr)126 return boot_kobj->is_visible(boot_kobj->data,127 ISCSI_BOOT_TGT_LUN);128 else if (attr == &iscsi_boot_attr_tgt_chap.attr)129 return boot_kobj->is_visible(boot_kobj->data,130 ISCSI_BOOT_TGT_CHAP_TYPE);131 else if (attr == &iscsi_boot_attr_tgt_nic.attr)132 return boot_kobj->is_visible(boot_kobj->data,133 ISCSI_BOOT_TGT_NIC_ASSOC);134 else if (attr == &iscsi_boot_attr_tgt_name.attr)135 return boot_kobj->is_visible(boot_kobj->data,136 ISCSI_BOOT_TGT_NAME);137 else if (attr == &iscsi_boot_attr_tgt_chap_name.attr)138 return boot_kobj->is_visible(boot_kobj->data,139 ISCSI_BOOT_TGT_CHAP_NAME);140 else if (attr == &iscsi_boot_attr_tgt_chap_secret.attr)141 return boot_kobj->is_visible(boot_kobj->data,142 ISCSI_BOOT_TGT_CHAP_SECRET);143 else if (attr == &iscsi_boot_attr_tgt_chap_rev_name.attr)144 return boot_kobj->is_visible(boot_kobj->data,145 ISCSI_BOOT_TGT_REV_CHAP_NAME);146 else if (attr == &iscsi_boot_attr_tgt_chap_rev_secret.attr)147 return boot_kobj->is_visible(boot_kobj->data,148 ISCSI_BOOT_TGT_REV_CHAP_SECRET);149 return 0;150}151 152static struct attribute_group iscsi_boot_target_attr_group = {153 .attrs = target_attrs,154 .is_visible = iscsi_boot_tgt_attr_is_visible,155};156 157/* Ethernet attrs */158iscsi_boot_rd_attr(eth_index, index, ISCSI_BOOT_ETH_INDEX);159iscsi_boot_rd_attr(eth_flags, flags, ISCSI_BOOT_ETH_FLAGS);160iscsi_boot_rd_attr(eth_ip, ip-addr, ISCSI_BOOT_ETH_IP_ADDR);161iscsi_boot_rd_attr(eth_prefix, prefix-len, ISCSI_BOOT_ETH_PREFIX_LEN);162iscsi_boot_rd_attr(eth_subnet, subnet-mask, ISCSI_BOOT_ETH_SUBNET_MASK);163iscsi_boot_rd_attr(eth_origin, origin, ISCSI_BOOT_ETH_ORIGIN);164iscsi_boot_rd_attr(eth_gateway, gateway, ISCSI_BOOT_ETH_GATEWAY);165iscsi_boot_rd_attr(eth_primary_dns, primary-dns, ISCSI_BOOT_ETH_PRIMARY_DNS);166iscsi_boot_rd_attr(eth_secondary_dns, secondary-dns,167 ISCSI_BOOT_ETH_SECONDARY_DNS);168iscsi_boot_rd_attr(eth_dhcp, dhcp, ISCSI_BOOT_ETH_DHCP);169iscsi_boot_rd_attr(eth_vlan, vlan, ISCSI_BOOT_ETH_VLAN);170iscsi_boot_rd_attr(eth_mac, mac, ISCSI_BOOT_ETH_MAC);171iscsi_boot_rd_attr(eth_hostname, hostname, ISCSI_BOOT_ETH_HOSTNAME);172 173static struct attribute *ethernet_attrs[] = {174 &iscsi_boot_attr_eth_index.attr,175 &iscsi_boot_attr_eth_flags.attr,176 &iscsi_boot_attr_eth_ip.attr,177 &iscsi_boot_attr_eth_prefix.attr,178 &iscsi_boot_attr_eth_subnet.attr,179 &iscsi_boot_attr_eth_origin.attr,180 &iscsi_boot_attr_eth_gateway.attr,181 &iscsi_boot_attr_eth_primary_dns.attr,182 &iscsi_boot_attr_eth_secondary_dns.attr,183 &iscsi_boot_attr_eth_dhcp.attr,184 &iscsi_boot_attr_eth_vlan.attr,185 &iscsi_boot_attr_eth_mac.attr,186 &iscsi_boot_attr_eth_hostname.attr,187 NULL188};189 190static umode_t iscsi_boot_eth_attr_is_visible(struct kobject *kobj,191 struct attribute *attr, int i)192{193 struct iscsi_boot_kobj *boot_kobj =194 container_of(kobj, struct iscsi_boot_kobj, kobj);195 196 if (attr == &iscsi_boot_attr_eth_index.attr)197 return boot_kobj->is_visible(boot_kobj->data,198 ISCSI_BOOT_ETH_INDEX);199 else if (attr == &iscsi_boot_attr_eth_flags.attr)200 return boot_kobj->is_visible(boot_kobj->data,201 ISCSI_BOOT_ETH_FLAGS);202 else if (attr == &iscsi_boot_attr_eth_ip.attr)203 return boot_kobj->is_visible(boot_kobj->data,204 ISCSI_BOOT_ETH_IP_ADDR);205 else if (attr == &iscsi_boot_attr_eth_prefix.attr)206 return boot_kobj->is_visible(boot_kobj->data,207 ISCSI_BOOT_ETH_PREFIX_LEN);208 else if (attr == &iscsi_boot_attr_eth_subnet.attr)209 return boot_kobj->is_visible(boot_kobj->data,210 ISCSI_BOOT_ETH_SUBNET_MASK);211 else if (attr == &iscsi_boot_attr_eth_origin.attr)212 return boot_kobj->is_visible(boot_kobj->data,213 ISCSI_BOOT_ETH_ORIGIN);214 else if (attr == &iscsi_boot_attr_eth_gateway.attr)215 return boot_kobj->is_visible(boot_kobj->data,216 ISCSI_BOOT_ETH_GATEWAY);217 else if (attr == &iscsi_boot_attr_eth_primary_dns.attr)218 return boot_kobj->is_visible(boot_kobj->data,219 ISCSI_BOOT_ETH_PRIMARY_DNS);220 else if (attr == &iscsi_boot_attr_eth_secondary_dns.attr)221 return boot_kobj->is_visible(boot_kobj->data,222 ISCSI_BOOT_ETH_SECONDARY_DNS);223 else if (attr == &iscsi_boot_attr_eth_dhcp.attr)224 return boot_kobj->is_visible(boot_kobj->data,225 ISCSI_BOOT_ETH_DHCP);226 else if (attr == &iscsi_boot_attr_eth_vlan.attr)227 return boot_kobj->is_visible(boot_kobj->data,228 ISCSI_BOOT_ETH_VLAN);229 else if (attr == &iscsi_boot_attr_eth_mac.attr)230 return boot_kobj->is_visible(boot_kobj->data,231 ISCSI_BOOT_ETH_MAC);232 else if (attr == &iscsi_boot_attr_eth_hostname.attr)233 return boot_kobj->is_visible(boot_kobj->data,234 ISCSI_BOOT_ETH_HOSTNAME);235 return 0;236}237 238static struct attribute_group iscsi_boot_ethernet_attr_group = {239 .attrs = ethernet_attrs,240 .is_visible = iscsi_boot_eth_attr_is_visible,241};242 243/* Initiator attrs */244iscsi_boot_rd_attr(ini_index, index, ISCSI_BOOT_INI_INDEX);245iscsi_boot_rd_attr(ini_flags, flags, ISCSI_BOOT_INI_FLAGS);246iscsi_boot_rd_attr(ini_isns, isns-server, ISCSI_BOOT_INI_ISNS_SERVER);247iscsi_boot_rd_attr(ini_slp, slp-server, ISCSI_BOOT_INI_SLP_SERVER);248iscsi_boot_rd_attr(ini_primary_radius, pri-radius-server,249 ISCSI_BOOT_INI_PRI_RADIUS_SERVER);250iscsi_boot_rd_attr(ini_secondary_radius, sec-radius-server,251 ISCSI_BOOT_INI_SEC_RADIUS_SERVER);252iscsi_boot_rd_attr(ini_name, initiator-name, ISCSI_BOOT_INI_INITIATOR_NAME);253 254static struct attribute *initiator_attrs[] = {255 &iscsi_boot_attr_ini_index.attr,256 &iscsi_boot_attr_ini_flags.attr,257 &iscsi_boot_attr_ini_isns.attr,258 &iscsi_boot_attr_ini_slp.attr,259 &iscsi_boot_attr_ini_primary_radius.attr,260 &iscsi_boot_attr_ini_secondary_radius.attr,261 &iscsi_boot_attr_ini_name.attr,262 NULL263};264 265static umode_t iscsi_boot_ini_attr_is_visible(struct kobject *kobj,266 struct attribute *attr, int i)267{268 struct iscsi_boot_kobj *boot_kobj =269 container_of(kobj, struct iscsi_boot_kobj, kobj);270 271 if (attr == &iscsi_boot_attr_ini_index.attr)272 return boot_kobj->is_visible(boot_kobj->data,273 ISCSI_BOOT_INI_INDEX);274 if (attr == &iscsi_boot_attr_ini_flags.attr)275 return boot_kobj->is_visible(boot_kobj->data,276 ISCSI_BOOT_INI_FLAGS);277 if (attr == &iscsi_boot_attr_ini_isns.attr)278 return boot_kobj->is_visible(boot_kobj->data,279 ISCSI_BOOT_INI_ISNS_SERVER);280 if (attr == &iscsi_boot_attr_ini_slp.attr)281 return boot_kobj->is_visible(boot_kobj->data,282 ISCSI_BOOT_INI_SLP_SERVER);283 if (attr == &iscsi_boot_attr_ini_primary_radius.attr)284 return boot_kobj->is_visible(boot_kobj->data,285 ISCSI_BOOT_INI_PRI_RADIUS_SERVER);286 if (attr == &iscsi_boot_attr_ini_secondary_radius.attr)287 return boot_kobj->is_visible(boot_kobj->data,288 ISCSI_BOOT_INI_SEC_RADIUS_SERVER);289 if (attr == &iscsi_boot_attr_ini_name.attr)290 return boot_kobj->is_visible(boot_kobj->data,291 ISCSI_BOOT_INI_INITIATOR_NAME);292 293 return 0;294}295 296static struct attribute_group iscsi_boot_initiator_attr_group = {297 .attrs = initiator_attrs,298 .is_visible = iscsi_boot_ini_attr_is_visible,299};300 301/* iBFT ACPI Table attributes */302iscsi_boot_rd_attr(acpitbl_signature, signature, ISCSI_BOOT_ACPITBL_SIGNATURE);303iscsi_boot_rd_attr(acpitbl_oem_id, oem_id, ISCSI_BOOT_ACPITBL_OEM_ID);304iscsi_boot_rd_attr(acpitbl_oem_table_id, oem_table_id,305 ISCSI_BOOT_ACPITBL_OEM_TABLE_ID);306 307static struct attribute *acpitbl_attrs[] = {308 &iscsi_boot_attr_acpitbl_signature.attr,309 &iscsi_boot_attr_acpitbl_oem_id.attr,310 &iscsi_boot_attr_acpitbl_oem_table_id.attr,311 NULL312};313 314static umode_t iscsi_boot_acpitbl_attr_is_visible(struct kobject *kobj,315 struct attribute *attr, int i)316{317 struct iscsi_boot_kobj *boot_kobj =318 container_of(kobj, struct iscsi_boot_kobj, kobj);319 320 if (attr == &iscsi_boot_attr_acpitbl_signature.attr)321 return boot_kobj->is_visible(boot_kobj->data,322 ISCSI_BOOT_ACPITBL_SIGNATURE);323 if (attr == &iscsi_boot_attr_acpitbl_oem_id.attr)324 return boot_kobj->is_visible(boot_kobj->data,325 ISCSI_BOOT_ACPITBL_OEM_ID);326 if (attr == &iscsi_boot_attr_acpitbl_oem_table_id.attr)327 return boot_kobj->is_visible(boot_kobj->data,328 ISCSI_BOOT_ACPITBL_OEM_TABLE_ID);329 return 0;330}331 332static struct attribute_group iscsi_boot_acpitbl_attr_group = {333 .attrs = acpitbl_attrs,334 .is_visible = iscsi_boot_acpitbl_attr_is_visible,335};336 337static struct iscsi_boot_kobj *338iscsi_boot_create_kobj(struct iscsi_boot_kset *boot_kset,339 struct attribute_group *attr_group,340 const char *name, int index, void *data,341 ssize_t (*show) (void *data, int type, char *buf),342 umode_t (*is_visible) (void *data, int type),343 void (*release) (void *data))344{345 struct iscsi_boot_kobj *boot_kobj;346 347 boot_kobj = kzalloc(sizeof(*boot_kobj), GFP_KERNEL);348 if (!boot_kobj)349 return NULL;350 INIT_LIST_HEAD(&boot_kobj->list);351 352 boot_kobj->kobj.kset = boot_kset->kset;353 if (kobject_init_and_add(&boot_kobj->kobj, &iscsi_boot_ktype,354 NULL, name, index)) {355 kobject_put(&boot_kobj->kobj);356 return NULL;357 }358 boot_kobj->data = data;359 boot_kobj->show = show;360 boot_kobj->is_visible = is_visible;361 boot_kobj->release = release;362 363 if (sysfs_create_group(&boot_kobj->kobj, attr_group)) {364 /*365 * We do not want to free this because the caller366 * will assume that since the creation call failed367 * the boot kobj was not setup and the normal release368 * path is not being run.369 */370 boot_kobj->release = NULL;371 kobject_put(&boot_kobj->kobj);372 return NULL;373 }374 boot_kobj->attr_group = attr_group;375 376 kobject_uevent(&boot_kobj->kobj, KOBJ_ADD);377 /* Nothing broke so lets add it to the list. */378 list_add_tail(&boot_kobj->list, &boot_kset->kobj_list);379 return boot_kobj;380}381 382static void iscsi_boot_remove_kobj(struct iscsi_boot_kobj *boot_kobj)383{384 list_del(&boot_kobj->list);385 sysfs_remove_group(&boot_kobj->kobj, boot_kobj->attr_group);386 kobject_put(&boot_kobj->kobj);387}388 389/**390 * iscsi_boot_create_target() - create boot target sysfs dir391 * @boot_kset: boot kset392 * @index: the target id393 * @data: driver specific data for target394 * @show: attr show function395 * @is_visible: attr visibility function396 * @release: release function397 *398 * Note: The boot sysfs lib will free the data passed in for the caller399 * when all refs to the target kobject have been released.400 */401struct iscsi_boot_kobj *402iscsi_boot_create_target(struct iscsi_boot_kset *boot_kset, int index,403 void *data,404 ssize_t (*show) (void *data, int type, char *buf),405 umode_t (*is_visible) (void *data, int type),406 void (*release) (void *data))407{408 return iscsi_boot_create_kobj(boot_kset, &iscsi_boot_target_attr_group,409 "target%d", index, data, show, is_visible,410 release);411}412EXPORT_SYMBOL_GPL(iscsi_boot_create_target);413 414/**415 * iscsi_boot_create_initiator() - create boot initiator sysfs dir416 * @boot_kset: boot kset417 * @index: the initiator id418 * @data: driver specific data419 * @show: attr show function420 * @is_visible: attr visibility function421 * @release: release function422 *423 * Note: The boot sysfs lib will free the data passed in for the caller424 * when all refs to the initiator kobject have been released.425 */426struct iscsi_boot_kobj *427iscsi_boot_create_initiator(struct iscsi_boot_kset *boot_kset, int index,428 void *data,429 ssize_t (*show) (void *data, int type, char *buf),430 umode_t (*is_visible) (void *data, int type),431 void (*release) (void *data))432{433 return iscsi_boot_create_kobj(boot_kset,434 &iscsi_boot_initiator_attr_group,435 "initiator", index, data, show,436 is_visible, release);437}438EXPORT_SYMBOL_GPL(iscsi_boot_create_initiator);439 440/**441 * iscsi_boot_create_ethernet() - create boot ethernet sysfs dir442 * @boot_kset: boot kset443 * @index: the ethernet device id444 * @data: driver specific data445 * @show: attr show function446 * @is_visible: attr visibility function447 * @release: release function448 *449 * Note: The boot sysfs lib will free the data passed in for the caller450 * when all refs to the ethernet kobject have been released.451 */452struct iscsi_boot_kobj *453iscsi_boot_create_ethernet(struct iscsi_boot_kset *boot_kset, int index,454 void *data,455 ssize_t (*show) (void *data, int type, char *buf),456 umode_t (*is_visible) (void *data, int type),457 void (*release) (void *data))458{459 return iscsi_boot_create_kobj(boot_kset,460 &iscsi_boot_ethernet_attr_group,461 "ethernet%d", index, data, show,462 is_visible, release);463}464EXPORT_SYMBOL_GPL(iscsi_boot_create_ethernet);465 466/**467 * iscsi_boot_create_acpitbl() - create boot acpi table sysfs dir468 * @boot_kset: boot kset469 * @index: not used470 * @data: driver specific data471 * @show: attr show function472 * @is_visible: attr visibility function473 * @release: release function474 *475 * Note: The boot sysfs lib will free the data passed in for the caller476 * when all refs to the acpitbl kobject have been released.477 */478struct iscsi_boot_kobj *479iscsi_boot_create_acpitbl(struct iscsi_boot_kset *boot_kset, int index,480 void *data,481 ssize_t (*show)(void *data, int type, char *buf),482 umode_t (*is_visible)(void *data, int type),483 void (*release)(void *data))484{485 return iscsi_boot_create_kobj(boot_kset,486 &iscsi_boot_acpitbl_attr_group,487 "acpi_header", index, data, show,488 is_visible, release);489}490EXPORT_SYMBOL_GPL(iscsi_boot_create_acpitbl);491 492/**493 * iscsi_boot_create_kset() - creates root sysfs tree494 * @set_name: name of root dir495 */496struct iscsi_boot_kset *iscsi_boot_create_kset(const char *set_name)497{498 struct iscsi_boot_kset *boot_kset;499 500 boot_kset = kzalloc(sizeof(*boot_kset), GFP_KERNEL);501 if (!boot_kset)502 return NULL;503 504 boot_kset->kset = kset_create_and_add(set_name, NULL, firmware_kobj);505 if (!boot_kset->kset) {506 kfree(boot_kset);507 return NULL;508 }509 510 INIT_LIST_HEAD(&boot_kset->kobj_list);511 return boot_kset;512}513EXPORT_SYMBOL_GPL(iscsi_boot_create_kset);514 515/**516 * iscsi_boot_create_host_kset() - creates root sysfs tree for a scsi host517 * @hostno: host number of scsi host518 */519struct iscsi_boot_kset *iscsi_boot_create_host_kset(unsigned int hostno)520{521 struct iscsi_boot_kset *boot_kset;522 char *set_name;523 524 set_name = kasprintf(GFP_KERNEL, "iscsi_boot%u", hostno);525 if (!set_name)526 return NULL;527 528 boot_kset = iscsi_boot_create_kset(set_name);529 kfree(set_name);530 return boot_kset;531}532EXPORT_SYMBOL_GPL(iscsi_boot_create_host_kset);533 534/**535 * iscsi_boot_destroy_kset() - destroy kset and kobjects under it536 * @boot_kset: boot kset537 *538 * This will remove the kset and kobjects and attrs under it.539 */540void iscsi_boot_destroy_kset(struct iscsi_boot_kset *boot_kset)541{542 struct iscsi_boot_kobj *boot_kobj, *tmp_kobj;543 544 if (!boot_kset)545 return;546 547 list_for_each_entry_safe(boot_kobj, tmp_kobj,548 &boot_kset->kobj_list, list)549 iscsi_boot_remove_kobj(boot_kobj);550 551 kset_unregister(boot_kset->kset);552 kfree(boot_kset);553}554EXPORT_SYMBOL_GPL(iscsi_boot_destroy_kset);555