501 строка
17 KiB
C
501 строка
17 KiB
C
/*
|
|
* Export the iSCSI boot info to userland via sysfs.
|
|
*
|
|
* Copyright (C) 2010 Red Hat, Inc. All rights reserved.
|
|
* Copyright (C) 2010 Mike Christie
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License v2.0 as published by
|
|
* the Free Software Foundation
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/sysfs.h>
|
|
#include <linux/capability.h>
|
|
#include <linux/iscsi_boot_sysfs.h>
|
|
|
|
|
|
MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>");
|
|
MODULE_DESCRIPTION("sysfs interface and helpers to export iSCSI boot information");
|
|
MODULE_LICENSE("GPL");
|
|
/*
|
|
* The kobject and attribute structures.
|
|
*/
|
|
struct iscsi_boot_attr {
|
|
struct attribute attr;
|
|
int type;
|
|
ssize_t (*show) (void *data, int type, char *buf);
|
|
};
|
|
|
|
/*
|
|
* The routine called for all sysfs attributes.
|
|
*/
|
|
static ssize_t iscsi_boot_show_attribute(struct kobject *kobj,
|
|
struct attribute *attr, char *buf)
|
|
{
|
|
struct iscsi_boot_kobj *boot_kobj =
|
|
container_of(kobj, struct iscsi_boot_kobj, kobj);
|
|
struct iscsi_boot_attr *boot_attr =
|
|
container_of(attr, struct iscsi_boot_attr, attr);
|
|
ssize_t ret = -EIO;
|
|
char *str = buf;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
|
|
if (boot_kobj->show)
|
|
ret = boot_kobj->show(boot_kobj->data, boot_attr->type, str);
|
|
return ret;
|
|
}
|
|
|
|
static const struct sysfs_ops iscsi_boot_attr_ops = {
|
|
.show = iscsi_boot_show_attribute,
|
|
};
|
|
|
|
static void iscsi_boot_kobj_release(struct kobject *kobj)
|
|
{
|
|
struct iscsi_boot_kobj *boot_kobj =
|
|
container_of(kobj, struct iscsi_boot_kobj, kobj);
|
|
|
|
if (boot_kobj->release)
|
|
boot_kobj->release(boot_kobj->data);
|
|
kfree(boot_kobj);
|
|
}
|
|
|
|
static struct kobj_type iscsi_boot_ktype = {
|
|
.release = iscsi_boot_kobj_release,
|
|
.sysfs_ops = &iscsi_boot_attr_ops,
|
|
};
|
|
|
|
#define iscsi_boot_rd_attr(fnname, sysfs_name, attr_type) \
|
|
static struct iscsi_boot_attr iscsi_boot_attr_##fnname = { \
|
|
.attr = { .name = __stringify(sysfs_name), .mode = 0444 }, \
|
|
.type = attr_type, \
|
|
}
|
|
|
|
/* Target attrs */
|
|
iscsi_boot_rd_attr(tgt_index, index, ISCSI_BOOT_TGT_INDEX);
|
|
iscsi_boot_rd_attr(tgt_flags, flags, ISCSI_BOOT_TGT_FLAGS);
|
|
iscsi_boot_rd_attr(tgt_ip, ip-addr, ISCSI_BOOT_TGT_IP_ADDR);
|
|
iscsi_boot_rd_attr(tgt_port, port, ISCSI_BOOT_TGT_PORT);
|
|
iscsi_boot_rd_attr(tgt_lun, lun, ISCSI_BOOT_TGT_LUN);
|
|
iscsi_boot_rd_attr(tgt_chap, chap-type, ISCSI_BOOT_TGT_CHAP_TYPE);
|
|
iscsi_boot_rd_attr(tgt_nic, nic-assoc, ISCSI_BOOT_TGT_NIC_ASSOC);
|
|
iscsi_boot_rd_attr(tgt_name, target-name, ISCSI_BOOT_TGT_NAME);
|
|
iscsi_boot_rd_attr(tgt_chap_name, chap-name, ISCSI_BOOT_TGT_CHAP_NAME);
|
|
iscsi_boot_rd_attr(tgt_chap_secret, chap-secret, ISCSI_BOOT_TGT_CHAP_SECRET);
|
|
iscsi_boot_rd_attr(tgt_chap_rev_name, rev-chap-name,
|
|
ISCSI_BOOT_TGT_REV_CHAP_NAME);
|
|
iscsi_boot_rd_attr(tgt_chap_rev_secret, rev-chap-name-secret,
|
|
ISCSI_BOOT_TGT_REV_CHAP_SECRET);
|
|
|
|
static struct attribute *target_attrs[] = {
|
|
&iscsi_boot_attr_tgt_index.attr,
|
|
&iscsi_boot_attr_tgt_flags.attr,
|
|
&iscsi_boot_attr_tgt_ip.attr,
|
|
&iscsi_boot_attr_tgt_port.attr,
|
|
&iscsi_boot_attr_tgt_lun.attr,
|
|
&iscsi_boot_attr_tgt_chap.attr,
|
|
&iscsi_boot_attr_tgt_nic.attr,
|
|
&iscsi_boot_attr_tgt_name.attr,
|
|
&iscsi_boot_attr_tgt_chap_name.attr,
|
|
&iscsi_boot_attr_tgt_chap_secret.attr,
|
|
&iscsi_boot_attr_tgt_chap_rev_name.attr,
|
|
&iscsi_boot_attr_tgt_chap_rev_secret.attr,
|
|
NULL
|
|
};
|
|
|
|
static umode_t iscsi_boot_tgt_attr_is_visible(struct kobject *kobj,
|
|
struct attribute *attr, int i)
|
|
{
|
|
struct iscsi_boot_kobj *boot_kobj =
|
|
container_of(kobj, struct iscsi_boot_kobj, kobj);
|
|
|
|
if (attr == &iscsi_boot_attr_tgt_index.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_INDEX);
|
|
else if (attr == &iscsi_boot_attr_tgt_flags.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_FLAGS);
|
|
else if (attr == &iscsi_boot_attr_tgt_ip.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_IP_ADDR);
|
|
else if (attr == &iscsi_boot_attr_tgt_port.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_PORT);
|
|
else if (attr == &iscsi_boot_attr_tgt_lun.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_LUN);
|
|
else if (attr == &iscsi_boot_attr_tgt_chap.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_CHAP_TYPE);
|
|
else if (attr == &iscsi_boot_attr_tgt_nic.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_NIC_ASSOC);
|
|
else if (attr == &iscsi_boot_attr_tgt_name.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_NAME);
|
|
else if (attr == &iscsi_boot_attr_tgt_chap_name.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_CHAP_NAME);
|
|
else if (attr == &iscsi_boot_attr_tgt_chap_secret.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_CHAP_SECRET);
|
|
else if (attr == &iscsi_boot_attr_tgt_chap_rev_name.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_REV_CHAP_NAME);
|
|
else if (attr == &iscsi_boot_attr_tgt_chap_rev_secret.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_TGT_REV_CHAP_SECRET);
|
|
return 0;
|
|
}
|
|
|
|
static struct attribute_group iscsi_boot_target_attr_group = {
|
|
.attrs = target_attrs,
|
|
.is_visible = iscsi_boot_tgt_attr_is_visible,
|
|
};
|
|
|
|
/* Ethernet attrs */
|
|
iscsi_boot_rd_attr(eth_index, index, ISCSI_BOOT_ETH_INDEX);
|
|
iscsi_boot_rd_attr(eth_flags, flags, ISCSI_BOOT_ETH_FLAGS);
|
|
iscsi_boot_rd_attr(eth_ip, ip-addr, ISCSI_BOOT_ETH_IP_ADDR);
|
|
iscsi_boot_rd_attr(eth_prefix, prefix-len, ISCSI_BOOT_ETH_PREFIX_LEN);
|
|
iscsi_boot_rd_attr(eth_subnet, subnet-mask, ISCSI_BOOT_ETH_SUBNET_MASK);
|
|
iscsi_boot_rd_attr(eth_origin, origin, ISCSI_BOOT_ETH_ORIGIN);
|
|
iscsi_boot_rd_attr(eth_gateway, gateway, ISCSI_BOOT_ETH_GATEWAY);
|
|
iscsi_boot_rd_attr(eth_primary_dns, primary-dns, ISCSI_BOOT_ETH_PRIMARY_DNS);
|
|
iscsi_boot_rd_attr(eth_secondary_dns, secondary-dns,
|
|
ISCSI_BOOT_ETH_SECONDARY_DNS);
|
|
iscsi_boot_rd_attr(eth_dhcp, dhcp, ISCSI_BOOT_ETH_DHCP);
|
|
iscsi_boot_rd_attr(eth_vlan, vlan, ISCSI_BOOT_ETH_VLAN);
|
|
iscsi_boot_rd_attr(eth_mac, mac, ISCSI_BOOT_ETH_MAC);
|
|
iscsi_boot_rd_attr(eth_hostname, hostname, ISCSI_BOOT_ETH_HOSTNAME);
|
|
|
|
static struct attribute *ethernet_attrs[] = {
|
|
&iscsi_boot_attr_eth_index.attr,
|
|
&iscsi_boot_attr_eth_flags.attr,
|
|
&iscsi_boot_attr_eth_ip.attr,
|
|
&iscsi_boot_attr_eth_prefix.attr,
|
|
&iscsi_boot_attr_eth_subnet.attr,
|
|
&iscsi_boot_attr_eth_origin.attr,
|
|
&iscsi_boot_attr_eth_gateway.attr,
|
|
&iscsi_boot_attr_eth_primary_dns.attr,
|
|
&iscsi_boot_attr_eth_secondary_dns.attr,
|
|
&iscsi_boot_attr_eth_dhcp.attr,
|
|
&iscsi_boot_attr_eth_vlan.attr,
|
|
&iscsi_boot_attr_eth_mac.attr,
|
|
&iscsi_boot_attr_eth_hostname.attr,
|
|
NULL
|
|
};
|
|
|
|
static umode_t iscsi_boot_eth_attr_is_visible(struct kobject *kobj,
|
|
struct attribute *attr, int i)
|
|
{
|
|
struct iscsi_boot_kobj *boot_kobj =
|
|
container_of(kobj, struct iscsi_boot_kobj, kobj);
|
|
|
|
if (attr == &iscsi_boot_attr_eth_index.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_INDEX);
|
|
else if (attr == &iscsi_boot_attr_eth_flags.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_FLAGS);
|
|
else if (attr == &iscsi_boot_attr_eth_ip.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_IP_ADDR);
|
|
else if (attr == &iscsi_boot_attr_eth_prefix.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_PREFIX_LEN);
|
|
else if (attr == &iscsi_boot_attr_eth_subnet.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_SUBNET_MASK);
|
|
else if (attr == &iscsi_boot_attr_eth_origin.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_ORIGIN);
|
|
else if (attr == &iscsi_boot_attr_eth_gateway.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_GATEWAY);
|
|
else if (attr == &iscsi_boot_attr_eth_primary_dns.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_PRIMARY_DNS);
|
|
else if (attr == &iscsi_boot_attr_eth_secondary_dns.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_SECONDARY_DNS);
|
|
else if (attr == &iscsi_boot_attr_eth_dhcp.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_DHCP);
|
|
else if (attr == &iscsi_boot_attr_eth_vlan.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_VLAN);
|
|
else if (attr == &iscsi_boot_attr_eth_mac.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_MAC);
|
|
else if (attr == &iscsi_boot_attr_eth_hostname.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_ETH_HOSTNAME);
|
|
return 0;
|
|
}
|
|
|
|
static struct attribute_group iscsi_boot_ethernet_attr_group = {
|
|
.attrs = ethernet_attrs,
|
|
.is_visible = iscsi_boot_eth_attr_is_visible,
|
|
};
|
|
|
|
/* Initiator attrs */
|
|
iscsi_boot_rd_attr(ini_index, index, ISCSI_BOOT_INI_INDEX);
|
|
iscsi_boot_rd_attr(ini_flags, flags, ISCSI_BOOT_INI_FLAGS);
|
|
iscsi_boot_rd_attr(ini_isns, isns-server, ISCSI_BOOT_INI_ISNS_SERVER);
|
|
iscsi_boot_rd_attr(ini_slp, slp-server, ISCSI_BOOT_INI_SLP_SERVER);
|
|
iscsi_boot_rd_attr(ini_primary_radius, pri-radius-server,
|
|
ISCSI_BOOT_INI_PRI_RADIUS_SERVER);
|
|
iscsi_boot_rd_attr(ini_secondary_radius, sec-radius-server,
|
|
ISCSI_BOOT_INI_SEC_RADIUS_SERVER);
|
|
iscsi_boot_rd_attr(ini_name, initiator-name, ISCSI_BOOT_INI_INITIATOR_NAME);
|
|
|
|
static struct attribute *initiator_attrs[] = {
|
|
&iscsi_boot_attr_ini_index.attr,
|
|
&iscsi_boot_attr_ini_flags.attr,
|
|
&iscsi_boot_attr_ini_isns.attr,
|
|
&iscsi_boot_attr_ini_slp.attr,
|
|
&iscsi_boot_attr_ini_primary_radius.attr,
|
|
&iscsi_boot_attr_ini_secondary_radius.attr,
|
|
&iscsi_boot_attr_ini_name.attr,
|
|
NULL
|
|
};
|
|
|
|
static umode_t iscsi_boot_ini_attr_is_visible(struct kobject *kobj,
|
|
struct attribute *attr, int i)
|
|
{
|
|
struct iscsi_boot_kobj *boot_kobj =
|
|
container_of(kobj, struct iscsi_boot_kobj, kobj);
|
|
|
|
if (attr == &iscsi_boot_attr_ini_index.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_INI_INDEX);
|
|
if (attr == &iscsi_boot_attr_ini_flags.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_INI_FLAGS);
|
|
if (attr == &iscsi_boot_attr_ini_isns.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_INI_ISNS_SERVER);
|
|
if (attr == &iscsi_boot_attr_ini_slp.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_INI_SLP_SERVER);
|
|
if (attr == &iscsi_boot_attr_ini_primary_radius.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_INI_PRI_RADIUS_SERVER);
|
|
if (attr == &iscsi_boot_attr_ini_secondary_radius.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_INI_SEC_RADIUS_SERVER);
|
|
if (attr == &iscsi_boot_attr_ini_name.attr)
|
|
return boot_kobj->is_visible(boot_kobj->data,
|
|
ISCSI_BOOT_INI_INITIATOR_NAME);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct attribute_group iscsi_boot_initiator_attr_group = {
|
|
.attrs = initiator_attrs,
|
|
.is_visible = iscsi_boot_ini_attr_is_visible,
|
|
};
|
|
|
|
static struct iscsi_boot_kobj *
|
|
iscsi_boot_create_kobj(struct iscsi_boot_kset *boot_kset,
|
|
struct attribute_group *attr_group,
|
|
const char *name, int index, void *data,
|
|
ssize_t (*show) (void *data, int type, char *buf),
|
|
umode_t (*is_visible) (void *data, int type),
|
|
void (*release) (void *data))
|
|
{
|
|
struct iscsi_boot_kobj *boot_kobj;
|
|
|
|
boot_kobj = kzalloc(sizeof(*boot_kobj), GFP_KERNEL);
|
|
if (!boot_kobj)
|
|
return NULL;
|
|
INIT_LIST_HEAD(&boot_kobj->list);
|
|
|
|
boot_kobj->kobj.kset = boot_kset->kset;
|
|
if (kobject_init_and_add(&boot_kobj->kobj, &iscsi_boot_ktype,
|
|
NULL, name, index)) {
|
|
kfree(boot_kobj);
|
|
return NULL;
|
|
}
|
|
boot_kobj->data = data;
|
|
boot_kobj->show = show;
|
|
boot_kobj->is_visible = is_visible;
|
|
boot_kobj->release = release;
|
|
|
|
if (sysfs_create_group(&boot_kobj->kobj, attr_group)) {
|
|
/*
|
|
* We do not want to free this because the caller
|
|
* will assume that since the creation call failed
|
|
* the boot kobj was not setup and the normal release
|
|
* path is not being run.
|
|
*/
|
|
boot_kobj->release = NULL;
|
|
kobject_put(&boot_kobj->kobj);
|
|
return NULL;
|
|
}
|
|
boot_kobj->attr_group = attr_group;
|
|
|
|
kobject_uevent(&boot_kobj->kobj, KOBJ_ADD);
|
|
/* Nothing broke so lets add it to the list. */
|
|
list_add_tail(&boot_kobj->list, &boot_kset->kobj_list);
|
|
return boot_kobj;
|
|
}
|
|
|
|
static void iscsi_boot_remove_kobj(struct iscsi_boot_kobj *boot_kobj)
|
|
{
|
|
list_del(&boot_kobj->list);
|
|
sysfs_remove_group(&boot_kobj->kobj, boot_kobj->attr_group);
|
|
kobject_put(&boot_kobj->kobj);
|
|
}
|
|
|
|
/**
|
|
* iscsi_boot_create_target() - create boot target sysfs dir
|
|
* @boot_kset: boot kset
|
|
* @index: the target id
|
|
* @data: driver specific data for target
|
|
* @show: attr show function
|
|
* @is_visible: attr visibility function
|
|
* @release: release function
|
|
*
|
|
* Note: The boot sysfs lib will free the data passed in for the caller
|
|
* when all refs to the target kobject have been released.
|
|
*/
|
|
struct iscsi_boot_kobj *
|
|
iscsi_boot_create_target(struct iscsi_boot_kset *boot_kset, int index,
|
|
void *data,
|
|
ssize_t (*show) (void *data, int type, char *buf),
|
|
umode_t (*is_visible) (void *data, int type),
|
|
void (*release) (void *data))
|
|
{
|
|
return iscsi_boot_create_kobj(boot_kset, &iscsi_boot_target_attr_group,
|
|
"target%d", index, data, show, is_visible,
|
|
release);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iscsi_boot_create_target);
|
|
|
|
/**
|
|
* iscsi_boot_create_initiator() - create boot initiator sysfs dir
|
|
* @boot_kset: boot kset
|
|
* @index: the initiator id
|
|
* @data: driver specific data
|
|
* @show: attr show function
|
|
* @is_visible: attr visibility function
|
|
* @release: release function
|
|
*
|
|
* Note: The boot sysfs lib will free the data passed in for the caller
|
|
* when all refs to the initiator kobject have been released.
|
|
*/
|
|
struct iscsi_boot_kobj *
|
|
iscsi_boot_create_initiator(struct iscsi_boot_kset *boot_kset, int index,
|
|
void *data,
|
|
ssize_t (*show) (void *data, int type, char *buf),
|
|
umode_t (*is_visible) (void *data, int type),
|
|
void (*release) (void *data))
|
|
{
|
|
return iscsi_boot_create_kobj(boot_kset,
|
|
&iscsi_boot_initiator_attr_group,
|
|
"initiator", index, data, show,
|
|
is_visible, release);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iscsi_boot_create_initiator);
|
|
|
|
/**
|
|
* iscsi_boot_create_ethernet() - create boot ethernet sysfs dir
|
|
* @boot_kset: boot kset
|
|
* @index: the ethernet device id
|
|
* @data: driver specific data
|
|
* @show: attr show function
|
|
* @is_visible: attr visibility function
|
|
* @release: release function
|
|
*
|
|
* Note: The boot sysfs lib will free the data passed in for the caller
|
|
* when all refs to the ethernet kobject have been released.
|
|
*/
|
|
struct iscsi_boot_kobj *
|
|
iscsi_boot_create_ethernet(struct iscsi_boot_kset *boot_kset, int index,
|
|
void *data,
|
|
ssize_t (*show) (void *data, int type, char *buf),
|
|
umode_t (*is_visible) (void *data, int type),
|
|
void (*release) (void *data))
|
|
{
|
|
return iscsi_boot_create_kobj(boot_kset,
|
|
&iscsi_boot_ethernet_attr_group,
|
|
"ethernet%d", index, data, show,
|
|
is_visible, release);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iscsi_boot_create_ethernet);
|
|
|
|
/**
|
|
* iscsi_boot_create_kset() - creates root sysfs tree
|
|
* @set_name: name of root dir
|
|
*/
|
|
struct iscsi_boot_kset *iscsi_boot_create_kset(const char *set_name)
|
|
{
|
|
struct iscsi_boot_kset *boot_kset;
|
|
|
|
boot_kset = kzalloc(sizeof(*boot_kset), GFP_KERNEL);
|
|
if (!boot_kset)
|
|
return NULL;
|
|
|
|
boot_kset->kset = kset_create_and_add(set_name, NULL, firmware_kobj);
|
|
if (!boot_kset->kset) {
|
|
kfree(boot_kset);
|
|
return NULL;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&boot_kset->kobj_list);
|
|
return boot_kset;
|
|
}
|
|
EXPORT_SYMBOL_GPL(iscsi_boot_create_kset);
|
|
|
|
/**
|
|
* iscsi_boot_create_host_kset() - creates root sysfs tree for a scsi host
|
|
* @hostno: host number of scsi host
|
|
*/
|
|
struct iscsi_boot_kset *iscsi_boot_create_host_kset(unsigned int hostno)
|
|
{
|
|
struct iscsi_boot_kset *boot_kset;
|
|
char *set_name;
|
|
|
|
set_name = kasprintf(GFP_KERNEL, "iscsi_boot%u", hostno);
|
|
if (!set_name)
|
|
return NULL;
|
|
|
|
boot_kset = iscsi_boot_create_kset(set_name);
|
|
kfree(set_name);
|
|
return boot_kset;
|
|
}
|
|
EXPORT_SYMBOL_GPL(iscsi_boot_create_host_kset);
|
|
|
|
/**
|
|
* iscsi_boot_destroy_kset() - destroy kset and kobjects under it
|
|
* @boot_kset: boot kset
|
|
*
|
|
* This will remove the kset and kobjects and attrs under it.
|
|
*/
|
|
void iscsi_boot_destroy_kset(struct iscsi_boot_kset *boot_kset)
|
|
{
|
|
struct iscsi_boot_kobj *boot_kobj, *tmp_kobj;
|
|
|
|
if (!boot_kset)
|
|
return;
|
|
|
|
list_for_each_entry_safe(boot_kobj, tmp_kobj,
|
|
&boot_kset->kobj_list, list)
|
|
iscsi_boot_remove_kobj(boot_kobj);
|
|
|
|
kset_unregister(boot_kset->kset);
|
|
kfree(boot_kset);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iscsi_boot_destroy_kset);
|