| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michael Christie | 2512 | 95.66% | 3 | 37.50% |
| David Bond | 82 | 3.12% | 1 | 12.50% |
| Hannes Reinecke | 18 | 0.69% | 1 | 12.50% |
| Al Viro | 8 | 0.30% | 1 | 12.50% |
| Qiushi Wu | 4 | 0.15% | 1 | 12.50% |
| Thomas Gleixner | 2 | 0.08% | 1 | 12.50% |
| Total | 2626 | 8 |
// SPDX-License-Identifier: GPL-2.0-only /* * Export the iSCSI boot info to userland via sysfs. * * Copyright (C) 2010 Red Hat, Inc. All rights reserved. * Copyright (C) 2010 Mike Christie */ #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, }; /* iBFT ACPI Table attributes */ iscsi_boot_rd_attr(acpitbl_signature, signature, ISCSI_BOOT_ACPITBL_SIGNATURE); iscsi_boot_rd_attr(acpitbl_oem_id, oem_id, ISCSI_BOOT_ACPITBL_OEM_ID); iscsi_boot_rd_attr(acpitbl_oem_table_id, oem_table_id, ISCSI_BOOT_ACPITBL_OEM_TABLE_ID); static struct attribute *acpitbl_attrs[] = { &iscsi_boot_attr_acpitbl_signature.attr, &iscsi_boot_attr_acpitbl_oem_id.attr, &iscsi_boot_attr_acpitbl_oem_table_id.attr, NULL }; static umode_t iscsi_boot_acpitbl_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_acpitbl_signature.attr) return boot_kobj->is_visible(boot_kobj->data, ISCSI_BOOT_ACPITBL_SIGNATURE); if (attr == &iscsi_boot_attr_acpitbl_oem_id.attr) return boot_kobj->is_visible(boot_kobj->data, ISCSI_BOOT_ACPITBL_OEM_ID); if (attr == &iscsi_boot_attr_acpitbl_oem_table_id.attr) return boot_kobj->is_visible(boot_kobj->data, ISCSI_BOOT_ACPITBL_OEM_TABLE_ID); return 0; } static struct attribute_group iscsi_boot_acpitbl_attr_group = { .attrs = acpitbl_attrs, .is_visible = iscsi_boot_acpitbl_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)) { kobject_put(&boot_kobj->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_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);
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