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// Copyright 2021 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build linux
// +build linux
package sysfs
import (
"fmt"
"os"
"path/filepath"
"github.com/prometheus/procfs/internal/util"
)
const dmiClassPath = "class/dmi/id"
// DMIClass contains info from files in /sys/class/dmi/id.
type DMIClass struct {
BiosDate *string // /sys/class/dmi/id/bios_date
BiosRelease *string // /sys/class/dmi/id/bios_release
BiosVendor *string // /sys/class/dmi/id/bios_vendor
BiosVersion *string // /sys/class/dmi/id/bios_version
BoardAssetTag *string // /sys/class/dmi/id/board_asset_tag
BoardName *string // /sys/class/dmi/id/board_name
BoardSerial *string // /sys/class/dmi/id/board_serial
BoardVendor *string // /sys/class/dmi/id/board_vendor
BoardVersion *string // /sys/class/dmi/id/board_version
ChassisAssetTag *string // /sys/class/dmi/id/chassis_asset_tag
ChassisSerial *string // /sys/class/dmi/id/chassis_serial
ChassisType *string // /sys/class/dmi/id/chassis_type
ChassisVendor *string // /sys/class/dmi/id/chassis_vendor
ChassisVersion *string // /sys/class/dmi/id/chassis_version
ProductFamily *string // /sys/class/dmi/id/product_family
ProductName *string // /sys/class/dmi/id/product_name
ProductSerial *string // /sys/class/dmi/id/product_serial
ProductSKU *string // /sys/class/dmi/id/product_sku
ProductUUID *string // /sys/class/dmi/id/product_uuid
ProductVersion *string // /sys/class/dmi/id/product_version
SystemVendor *string // /sys/class/dmi/id/sys_vendor
}
// DMIClass returns Desktop Management Interface (DMI) information read from /sys/class/dmi.
func (fs FS) DMIClass() (*DMIClass, error) {
path := fs.sys.Path(dmiClassPath)
files, err := os.ReadDir(path)
if err != nil {
return nil, fmt.Errorf("failed to read directory %q: %w", path, err)
}
var dmi DMIClass
for _, f := range files {
if !f.Type().IsRegular() {
continue
}
name := f.Name()
if name == "modalias" || name == "uevent" {
continue
}
filename := filepath.Join(path, name)
value, err := util.SysReadFile(filename)
if err != nil {
if os.IsPermission(err) {
// Only root is allowed to read the serial and product_uuid files!
continue
}
return nil, fmt.Errorf("failed to read file %q: %w", filename, err)
}
switch name {
case "bios_date":
dmi.BiosDate = &value
case "bios_release":
dmi.BiosRelease = &value
case "bios_vendor":
dmi.BiosVendor = &value
case "bios_version":
dmi.BiosVersion = &value
case "board_asset_tag":
dmi.BoardAssetTag = &value
case "board_name":
dmi.BoardName = &value
case "board_serial":
dmi.BoardSerial = &value
case "board_vendor":
dmi.BoardVendor = &value
case "board_version":
dmi.BoardVersion = &value
case "chassis_asset_tag":
dmi.ChassisAssetTag = &value
case "chassis_serial":
dmi.ChassisSerial = &value
case "chassis_type":
dmi.ChassisType = &value
case "chassis_vendor":
dmi.ChassisVendor = &value
case "chassis_version":
dmi.ChassisVersion = &value
case "product_family":
dmi.ProductFamily = &value
case "product_name":
dmi.ProductName = &value
case "product_serial":
dmi.ProductSerial = &value
case "product_sku":
dmi.ProductSKU = &value
case "product_uuid":
dmi.ProductUUID = &value
case "product_version":
dmi.ProductVersion = &value
case "sys_vendor":
dmi.SystemVendor = &value
}
}
return &dmi, nil
}
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