vpd

Documentation

Index

• Variables
• func Get(key string, readOnly bool) ([]byte, error)
• func GetAll(readOnly bool) (map[string][]byte, error)
• func Set(key string, value []byte, readOnly bool) error

Variables

var (
	VpdDir       = "/sys/firmware/vpd"
	MaxBootEntry = 9999
)

VpdDir points to the base directory where the VPD sysfs interface is located. It is an exported variable to allow for testing

Functions

func Get

func Get(key string, readOnly bool) ([]byte, error)

Get reads a VPD variable by name and returns its value as a sequence of bytes. The `readOnly` flag specifies whether the variable is read-only or read-write.

func GetAll

func GetAll(readOnly bool) (map[string][]byte, error)

GetAll reads all the VPD variables and returns a map contaiing each name:value couple. The `readOnly` flag specifies whether the variable is read-only or read-write.

func Set

func Set(key string, value []byte, readOnly bool) error

Set sets a VPD variable with `key` as name and `value` as its byte-stream value. The `readOnly` flag specifies whether the variable is read-only or read-write. NOTE Unfortunately Set doesn't currently work, because the sysfs interface does not support writing. To write, this library needs a backend able to write to flash chips, like the command line tool flashrom or flashtools.