[−][src]Crate efivar
efivar is a crate for manipulating EFI variables using the OS interface. This crate is mainly
used by efiboot to implement its functionality.
On Linux, it is assumed that efivarfs is mounted and available at /sys/firmware/efi/efivars, which should be the default nowadays on all major distros.
On Windows, it uses the Get/SetFirmwareEnvironmentVariable family of functions, which require administrative rights. This also requires adjusting the security token for the current thread to include SeSystemEnvironmentPrivilege. This is done during the initialization of SystemManager (see SystemManager::new() ).
In-memory and filesystem storage are also provided for testing purposes, or as a way to dump system variables to an external file.
Modules
| efi | EFI constants based on the UEFI specification |
Enums
| Error | Describes an error returned by EFI variable operations |
Traits
| VarEnumerator | Represents the capability of enumerating EFI variables |
| VarManager | Represents an EFI variable manager that can read, write and list variables |
| VarManagerEx | Represents an EFI variable manager that can read (both static and dynamic sized variables), write and list variables |
| VarReader | Represents the capability of reading EFI variables |
| VarReaderEx | Represents the capability of reading EFI variables of a dynamic size |
| VarWriter | Represents the capability of writing EFI variables |
Functions
| system | Returns a |
Type Definitions
| Result | Result type for this crate's API functions |