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554 lines
18 KiB
554 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Export the iSCSI boot info to userland via sysfs. |
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* |
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* Copyright (C) 2010 Red Hat, Inc. All rights reserved. |
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* Copyright (C) 2010 Mike Christie |
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*/ |
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#include <linux/module.h> |
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#include <linux/string.h> |
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#include <linux/slab.h> |
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#include <linux/sysfs.h> |
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#include <linux/capability.h> |
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#include <linux/iscsi_boot_sysfs.h> |
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MODULE_AUTHOR("Mike Christie <[email protected]>"); |
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MODULE_DESCRIPTION("sysfs interface and helpers to export iSCSI boot information"); |
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MODULE_LICENSE("GPL"); |
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/* |
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* The kobject and attribute structures. |
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*/ |
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struct iscsi_boot_attr { |
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struct attribute attr; |
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int type; |
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ssize_t (*show) (void *data, int type, char *buf); |
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}; |
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/* |
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* The routine called for all sysfs attributes. |
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*/ |
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static ssize_t iscsi_boot_show_attribute(struct kobject *kobj, |
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struct attribute *attr, char *buf) |
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{ |
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struct iscsi_boot_kobj *boot_kobj = |
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container_of(kobj, struct iscsi_boot_kobj, kobj); |
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struct iscsi_boot_attr *boot_attr = |
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container_of(attr, struct iscsi_boot_attr, attr); |
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ssize_t ret = -EIO; |
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char *str = buf; |
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if (!capable(CAP_SYS_ADMIN)) |
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return -EACCES; |
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if (boot_kobj->show) |
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ret = boot_kobj->show(boot_kobj->data, boot_attr->type, str); |
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return ret; |
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} |
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static const struct sysfs_ops iscsi_boot_attr_ops = { |
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.show = iscsi_boot_show_attribute, |
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}; |
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static void iscsi_boot_kobj_release(struct kobject *kobj) |
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{ |
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struct iscsi_boot_kobj *boot_kobj = |
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container_of(kobj, struct iscsi_boot_kobj, kobj); |
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if (boot_kobj->release) |
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boot_kobj->release(boot_kobj->data); |
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kfree(boot_kobj); |
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} |
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static struct kobj_type iscsi_boot_ktype = { |
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.release = iscsi_boot_kobj_release, |
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.sysfs_ops = &iscsi_boot_attr_ops, |
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}; |
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#define iscsi_boot_rd_attr(fnname, sysfs_name, attr_type) \ |
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static struct iscsi_boot_attr iscsi_boot_attr_##fnname = { \ |
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.attr = { .name = __stringify(sysfs_name), .mode = 0444 }, \ |
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.type = attr_type, \ |
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} |
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/* Target attrs */ |
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iscsi_boot_rd_attr(tgt_index, index, ISCSI_BOOT_TGT_INDEX); |
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iscsi_boot_rd_attr(tgt_flags, flags, ISCSI_BOOT_TGT_FLAGS); |
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iscsi_boot_rd_attr(tgt_ip, ip-addr, ISCSI_BOOT_TGT_IP_ADDR); |
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iscsi_boot_rd_attr(tgt_port, port, ISCSI_BOOT_TGT_PORT); |
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iscsi_boot_rd_attr(tgt_lun, lun, ISCSI_BOOT_TGT_LUN); |
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iscsi_boot_rd_attr(tgt_chap, chap-type, ISCSI_BOOT_TGT_CHAP_TYPE); |
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iscsi_boot_rd_attr(tgt_nic, nic-assoc, ISCSI_BOOT_TGT_NIC_ASSOC); |
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iscsi_boot_rd_attr(tgt_name, target-name, ISCSI_BOOT_TGT_NAME); |
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iscsi_boot_rd_attr(tgt_chap_name, chap-name, ISCSI_BOOT_TGT_CHAP_NAME); |
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iscsi_boot_rd_attr(tgt_chap_secret, chap-secret, ISCSI_BOOT_TGT_CHAP_SECRET); |
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iscsi_boot_rd_attr(tgt_chap_rev_name, rev-chap-name, |
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ISCSI_BOOT_TGT_REV_CHAP_NAME); |
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iscsi_boot_rd_attr(tgt_chap_rev_secret, rev-chap-name-secret, |
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ISCSI_BOOT_TGT_REV_CHAP_SECRET); |
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static struct attribute *target_attrs[] = { |
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&iscsi_boot_attr_tgt_index.attr, |
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&iscsi_boot_attr_tgt_flags.attr, |
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&iscsi_boot_attr_tgt_ip.attr, |
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&iscsi_boot_attr_tgt_port.attr, |
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&iscsi_boot_attr_tgt_lun.attr, |
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&iscsi_boot_attr_tgt_chap.attr, |
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&iscsi_boot_attr_tgt_nic.attr, |
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&iscsi_boot_attr_tgt_name.attr, |
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&iscsi_boot_attr_tgt_chap_name.attr, |
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&iscsi_boot_attr_tgt_chap_secret.attr, |
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&iscsi_boot_attr_tgt_chap_rev_name.attr, |
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&iscsi_boot_attr_tgt_chap_rev_secret.attr, |
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NULL |
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}; |
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static umode_t iscsi_boot_tgt_attr_is_visible(struct kobject *kobj, |
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struct attribute *attr, int i) |
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{ |
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struct iscsi_boot_kobj *boot_kobj = |
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container_of(kobj, struct iscsi_boot_kobj, kobj); |
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if (attr == &iscsi_boot_attr_tgt_index.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_INDEX); |
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else if (attr == &iscsi_boot_attr_tgt_flags.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_FLAGS); |
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else if (attr == &iscsi_boot_attr_tgt_ip.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_IP_ADDR); |
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else if (attr == &iscsi_boot_attr_tgt_port.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_PORT); |
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else if (attr == &iscsi_boot_attr_tgt_lun.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_LUN); |
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else if (attr == &iscsi_boot_attr_tgt_chap.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_CHAP_TYPE); |
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else if (attr == &iscsi_boot_attr_tgt_nic.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_NIC_ASSOC); |
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else if (attr == &iscsi_boot_attr_tgt_name.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_NAME); |
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else if (attr == &iscsi_boot_attr_tgt_chap_name.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_CHAP_NAME); |
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else if (attr == &iscsi_boot_attr_tgt_chap_secret.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_CHAP_SECRET); |
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else if (attr == &iscsi_boot_attr_tgt_chap_rev_name.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_REV_CHAP_NAME); |
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else if (attr == &iscsi_boot_attr_tgt_chap_rev_secret.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_TGT_REV_CHAP_SECRET); |
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return 0; |
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} |
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static struct attribute_group iscsi_boot_target_attr_group = { |
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.attrs = target_attrs, |
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.is_visible = iscsi_boot_tgt_attr_is_visible, |
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}; |
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/* Ethernet attrs */ |
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iscsi_boot_rd_attr(eth_index, index, ISCSI_BOOT_ETH_INDEX); |
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iscsi_boot_rd_attr(eth_flags, flags, ISCSI_BOOT_ETH_FLAGS); |
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iscsi_boot_rd_attr(eth_ip, ip-addr, ISCSI_BOOT_ETH_IP_ADDR); |
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iscsi_boot_rd_attr(eth_prefix, prefix-len, ISCSI_BOOT_ETH_PREFIX_LEN); |
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iscsi_boot_rd_attr(eth_subnet, subnet-mask, ISCSI_BOOT_ETH_SUBNET_MASK); |
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iscsi_boot_rd_attr(eth_origin, origin, ISCSI_BOOT_ETH_ORIGIN); |
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iscsi_boot_rd_attr(eth_gateway, gateway, ISCSI_BOOT_ETH_GATEWAY); |
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iscsi_boot_rd_attr(eth_primary_dns, primary-dns, ISCSI_BOOT_ETH_PRIMARY_DNS); |
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iscsi_boot_rd_attr(eth_secondary_dns, secondary-dns, |
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ISCSI_BOOT_ETH_SECONDARY_DNS); |
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iscsi_boot_rd_attr(eth_dhcp, dhcp, ISCSI_BOOT_ETH_DHCP); |
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iscsi_boot_rd_attr(eth_vlan, vlan, ISCSI_BOOT_ETH_VLAN); |
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iscsi_boot_rd_attr(eth_mac, mac, ISCSI_BOOT_ETH_MAC); |
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iscsi_boot_rd_attr(eth_hostname, hostname, ISCSI_BOOT_ETH_HOSTNAME); |
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static struct attribute *ethernet_attrs[] = { |
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&iscsi_boot_attr_eth_index.attr, |
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&iscsi_boot_attr_eth_flags.attr, |
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&iscsi_boot_attr_eth_ip.attr, |
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&iscsi_boot_attr_eth_prefix.attr, |
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&iscsi_boot_attr_eth_subnet.attr, |
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&iscsi_boot_attr_eth_origin.attr, |
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&iscsi_boot_attr_eth_gateway.attr, |
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&iscsi_boot_attr_eth_primary_dns.attr, |
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&iscsi_boot_attr_eth_secondary_dns.attr, |
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&iscsi_boot_attr_eth_dhcp.attr, |
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&iscsi_boot_attr_eth_vlan.attr, |
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&iscsi_boot_attr_eth_mac.attr, |
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&iscsi_boot_attr_eth_hostname.attr, |
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NULL |
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}; |
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static umode_t iscsi_boot_eth_attr_is_visible(struct kobject *kobj, |
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struct attribute *attr, int i) |
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{ |
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struct iscsi_boot_kobj *boot_kobj = |
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container_of(kobj, struct iscsi_boot_kobj, kobj); |
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if (attr == &iscsi_boot_attr_eth_index.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_INDEX); |
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else if (attr == &iscsi_boot_attr_eth_flags.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_FLAGS); |
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else if (attr == &iscsi_boot_attr_eth_ip.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_IP_ADDR); |
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else if (attr == &iscsi_boot_attr_eth_prefix.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_PREFIX_LEN); |
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else if (attr == &iscsi_boot_attr_eth_subnet.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_SUBNET_MASK); |
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else if (attr == &iscsi_boot_attr_eth_origin.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_ORIGIN); |
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else if (attr == &iscsi_boot_attr_eth_gateway.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_GATEWAY); |
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else if (attr == &iscsi_boot_attr_eth_primary_dns.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_PRIMARY_DNS); |
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else if (attr == &iscsi_boot_attr_eth_secondary_dns.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_SECONDARY_DNS); |
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else if (attr == &iscsi_boot_attr_eth_dhcp.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_DHCP); |
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else if (attr == &iscsi_boot_attr_eth_vlan.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_VLAN); |
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else if (attr == &iscsi_boot_attr_eth_mac.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_MAC); |
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else if (attr == &iscsi_boot_attr_eth_hostname.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ETH_HOSTNAME); |
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return 0; |
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} |
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static struct attribute_group iscsi_boot_ethernet_attr_group = { |
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.attrs = ethernet_attrs, |
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.is_visible = iscsi_boot_eth_attr_is_visible, |
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}; |
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/* Initiator attrs */ |
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iscsi_boot_rd_attr(ini_index, index, ISCSI_BOOT_INI_INDEX); |
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iscsi_boot_rd_attr(ini_flags, flags, ISCSI_BOOT_INI_FLAGS); |
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iscsi_boot_rd_attr(ini_isns, isns-server, ISCSI_BOOT_INI_ISNS_SERVER); |
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iscsi_boot_rd_attr(ini_slp, slp-server, ISCSI_BOOT_INI_SLP_SERVER); |
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iscsi_boot_rd_attr(ini_primary_radius, pri-radius-server, |
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ISCSI_BOOT_INI_PRI_RADIUS_SERVER); |
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iscsi_boot_rd_attr(ini_secondary_radius, sec-radius-server, |
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ISCSI_BOOT_INI_SEC_RADIUS_SERVER); |
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iscsi_boot_rd_attr(ini_name, initiator-name, ISCSI_BOOT_INI_INITIATOR_NAME); |
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static struct attribute *initiator_attrs[] = { |
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&iscsi_boot_attr_ini_index.attr, |
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&iscsi_boot_attr_ini_flags.attr, |
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&iscsi_boot_attr_ini_isns.attr, |
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&iscsi_boot_attr_ini_slp.attr, |
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&iscsi_boot_attr_ini_primary_radius.attr, |
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&iscsi_boot_attr_ini_secondary_radius.attr, |
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&iscsi_boot_attr_ini_name.attr, |
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NULL |
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}; |
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static umode_t iscsi_boot_ini_attr_is_visible(struct kobject *kobj, |
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struct attribute *attr, int i) |
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{ |
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struct iscsi_boot_kobj *boot_kobj = |
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container_of(kobj, struct iscsi_boot_kobj, kobj); |
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if (attr == &iscsi_boot_attr_ini_index.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_INI_INDEX); |
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if (attr == &iscsi_boot_attr_ini_flags.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_INI_FLAGS); |
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if (attr == &iscsi_boot_attr_ini_isns.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_INI_ISNS_SERVER); |
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if (attr == &iscsi_boot_attr_ini_slp.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_INI_SLP_SERVER); |
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if (attr == &iscsi_boot_attr_ini_primary_radius.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_INI_PRI_RADIUS_SERVER); |
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if (attr == &iscsi_boot_attr_ini_secondary_radius.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_INI_SEC_RADIUS_SERVER); |
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if (attr == &iscsi_boot_attr_ini_name.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_INI_INITIATOR_NAME); |
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return 0; |
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} |
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static struct attribute_group iscsi_boot_initiator_attr_group = { |
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.attrs = initiator_attrs, |
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.is_visible = iscsi_boot_ini_attr_is_visible, |
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}; |
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/* iBFT ACPI Table attributes */ |
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iscsi_boot_rd_attr(acpitbl_signature, signature, ISCSI_BOOT_ACPITBL_SIGNATURE); |
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iscsi_boot_rd_attr(acpitbl_oem_id, oem_id, ISCSI_BOOT_ACPITBL_OEM_ID); |
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iscsi_boot_rd_attr(acpitbl_oem_table_id, oem_table_id, |
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ISCSI_BOOT_ACPITBL_OEM_TABLE_ID); |
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static struct attribute *acpitbl_attrs[] = { |
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&iscsi_boot_attr_acpitbl_signature.attr, |
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&iscsi_boot_attr_acpitbl_oem_id.attr, |
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&iscsi_boot_attr_acpitbl_oem_table_id.attr, |
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NULL |
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}; |
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static umode_t iscsi_boot_acpitbl_attr_is_visible(struct kobject *kobj, |
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struct attribute *attr, int i) |
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{ |
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struct iscsi_boot_kobj *boot_kobj = |
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container_of(kobj, struct iscsi_boot_kobj, kobj); |
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if (attr == &iscsi_boot_attr_acpitbl_signature.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ACPITBL_SIGNATURE); |
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if (attr == &iscsi_boot_attr_acpitbl_oem_id.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ACPITBL_OEM_ID); |
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if (attr == &iscsi_boot_attr_acpitbl_oem_table_id.attr) |
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return boot_kobj->is_visible(boot_kobj->data, |
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ISCSI_BOOT_ACPITBL_OEM_TABLE_ID); |
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return 0; |
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} |
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static struct attribute_group iscsi_boot_acpitbl_attr_group = { |
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.attrs = acpitbl_attrs, |
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.is_visible = iscsi_boot_acpitbl_attr_is_visible, |
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}; |
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static struct iscsi_boot_kobj * |
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iscsi_boot_create_kobj(struct iscsi_boot_kset *boot_kset, |
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struct attribute_group *attr_group, |
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const char *name, int index, void *data, |
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ssize_t (*show) (void *data, int type, char *buf), |
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umode_t (*is_visible) (void *data, int type), |
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void (*release) (void *data)) |
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{ |
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struct iscsi_boot_kobj *boot_kobj; |
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boot_kobj = kzalloc(sizeof(*boot_kobj), GFP_KERNEL); |
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if (!boot_kobj) |
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return NULL; |
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INIT_LIST_HEAD(&boot_kobj->list); |
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boot_kobj->kobj.kset = boot_kset->kset; |
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if (kobject_init_and_add(&boot_kobj->kobj, &iscsi_boot_ktype, |
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NULL, name, index)) { |
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kobject_put(&boot_kobj->kobj); |
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return NULL; |
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} |
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boot_kobj->data = data; |
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boot_kobj->show = show; |
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boot_kobj->is_visible = is_visible; |
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boot_kobj->release = release; |
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|
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if (sysfs_create_group(&boot_kobj->kobj, attr_group)) { |
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/* |
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* We do not want to free this because the caller |
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* will assume that since the creation call failed |
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* the boot kobj was not setup and the normal release |
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* path is not being run. |
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*/ |
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boot_kobj->release = NULL; |
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kobject_put(&boot_kobj->kobj); |
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return NULL; |
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} |
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boot_kobj->attr_group = attr_group; |
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kobject_uevent(&boot_kobj->kobj, KOBJ_ADD); |
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/* Nothing broke so lets add it to the list. */ |
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list_add_tail(&boot_kobj->list, &boot_kset->kobj_list); |
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return boot_kobj; |
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} |
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|
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static void iscsi_boot_remove_kobj(struct iscsi_boot_kobj *boot_kobj) |
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{ |
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list_del(&boot_kobj->list); |
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sysfs_remove_group(&boot_kobj->kobj, boot_kobj->attr_group); |
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kobject_put(&boot_kobj->kobj); |
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} |
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|
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/** |
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* iscsi_boot_create_target() - create boot target sysfs dir |
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* @boot_kset: boot kset |
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* @index: the target id |
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* @data: driver specific data for target |
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* @show: attr show function |
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* @is_visible: attr visibility function |
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* @release: release function |
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* |
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* Note: The boot sysfs lib will free the data passed in for the caller |
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* when all refs to the target kobject have been released. |
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*/ |
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struct iscsi_boot_kobj * |
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iscsi_boot_create_target(struct iscsi_boot_kset *boot_kset, int index, |
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void *data, |
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ssize_t (*show) (void *data, int type, char *buf), |
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umode_t (*is_visible) (void *data, int type), |
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void (*release) (void *data)) |
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{ |
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return iscsi_boot_create_kobj(boot_kset, &iscsi_boot_target_attr_group, |
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"target%d", index, data, show, is_visible, |
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release); |
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} |
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EXPORT_SYMBOL_GPL(iscsi_boot_create_target); |
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|
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/** |
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* iscsi_boot_create_initiator() - create boot initiator sysfs dir |
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* @boot_kset: boot kset |
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* @index: the initiator id |
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* @data: driver specific data |
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* @show: attr show function |
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* @is_visible: attr visibility function |
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* @release: release function |
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* |
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* Note: The boot sysfs lib will free the data passed in for the caller |
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* when all refs to the initiator kobject have been released. |
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*/ |
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struct iscsi_boot_kobj * |
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iscsi_boot_create_initiator(struct iscsi_boot_kset *boot_kset, int index, |
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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_acpitbl() - create boot acpi table sysfs dir |
|
* @boot_kset: boot kset |
|
* @index: not used |
|
* @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 acpitbl kobject have been released. |
|
*/ |
|
struct iscsi_boot_kobj * |
|
iscsi_boot_create_acpitbl(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_acpitbl_attr_group, |
|
"acpi_header", index, data, show, |
|
is_visible, release); |
|
} |
|
EXPORT_SYMBOL_GPL(iscsi_boot_create_acpitbl); |
|
|
|
/** |
|
* 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);
|
|
|