linux/drivers/firmware/dmi-id.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Export SMBIOS/DMI info via sysfs to userspace
 *
 * Copyright 2007, Lennart Poettering
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/dmi.h>
#include <linux/device.h>
#include <linux/slab.h>

struct dmi_device_attribute{ … };
#define to_dmi_dev_attr(_dev_attr) …

static ssize_t sys_dmi_field_show(struct device *dev,
				  struct device_attribute *attr,
				  char *page)
{ … }

#define DMI_ATTR(_name, _mode, _show, _field) …

#define DEFINE_DMI_ATTR_WITH_SHOW(_name, _mode, _field) …

DEFINE_DMI_ATTR_WITH_SHOW(bios_vendor,		0444, DMI_BIOS_VENDOR);
DEFINE_DMI_ATTR_WITH_SHOW(bios_version,		0444, DMI_BIOS_VERSION);
DEFINE_DMI_ATTR_WITH_SHOW(bios_date,		0444, DMI_BIOS_DATE);
DEFINE_DMI_ATTR_WITH_SHOW(sys_vendor,		0444, DMI_SYS_VENDOR);
DEFINE_DMI_ATTR_WITH_SHOW(bios_release,		0444, DMI_BIOS_RELEASE);
DEFINE_DMI_ATTR_WITH_SHOW(ec_firmware_release,	0444, DMI_EC_FIRMWARE_RELEASE);
DEFINE_DMI_ATTR_WITH_SHOW(product_name,		0444, DMI_PRODUCT_NAME);
DEFINE_DMI_ATTR_WITH_SHOW(product_version,	0444, DMI_PRODUCT_VERSION);
DEFINE_DMI_ATTR_WITH_SHOW(product_serial,	0400, DMI_PRODUCT_SERIAL);
DEFINE_DMI_ATTR_WITH_SHOW(product_uuid,		0400, DMI_PRODUCT_UUID);
DEFINE_DMI_ATTR_WITH_SHOW(product_sku,		0444, DMI_PRODUCT_SKU);
DEFINE_DMI_ATTR_WITH_SHOW(product_family,	0444, DMI_PRODUCT_FAMILY);
DEFINE_DMI_ATTR_WITH_SHOW(board_vendor,		0444, DMI_BOARD_VENDOR);
DEFINE_DMI_ATTR_WITH_SHOW(board_name,		0444, DMI_BOARD_NAME);
DEFINE_DMI_ATTR_WITH_SHOW(board_version,	0444, DMI_BOARD_VERSION);
DEFINE_DMI_ATTR_WITH_SHOW(board_serial,		0400, DMI_BOARD_SERIAL);
DEFINE_DMI_ATTR_WITH_SHOW(board_asset_tag,	0444, DMI_BOARD_ASSET_TAG);
DEFINE_DMI_ATTR_WITH_SHOW(chassis_vendor,	0444, DMI_CHASSIS_VENDOR);
DEFINE_DMI_ATTR_WITH_SHOW(chassis_type,		0444, DMI_CHASSIS_TYPE);
DEFINE_DMI_ATTR_WITH_SHOW(chassis_version,	0444, DMI_CHASSIS_VERSION);
DEFINE_DMI_ATTR_WITH_SHOW(chassis_serial,	0400, DMI_CHASSIS_SERIAL);
DEFINE_DMI_ATTR_WITH_SHOW(chassis_asset_tag,	0444, DMI_CHASSIS_ASSET_TAG);

static void ascii_filter(char *d, const char *s)
{ … }

static ssize_t get_modalias(char *buffer, size_t buffer_size)
{ … }

static ssize_t sys_dmi_modalias_show(struct device *dev,
				     struct device_attribute *attr, char *page)
{ … }

static struct device_attribute sys_dmi_modalias_attr = …;

static struct attribute *sys_dmi_attributes[DMI_STRING_MAX+2];

static struct attribute_group sys_dmi_attribute_group = …;

static const struct attribute_group* sys_dmi_attribute_groups[] = …;

static int dmi_dev_uevent(const struct device *dev, struct kobj_uevent_env *env)
{ … }

static void dmi_dev_release(struct device *dev)
{ … }

static struct class dmi_class = …;

static struct device *dmi_dev;

/* Initialization */

#define ADD_DMI_ATTR(_name, _field) …

/* In a separate function to keep gcc 3.2 happy - do NOT merge this in
   dmi_id_init! */
static void __init dmi_id_init_attr_table(void)
{ … }

static int __init dmi_id_init(void)
{ … }

arch_initcall(dmi_id_init);