| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| #if !ENABLE_EFI |
| # include <errno.h> |
| #endif |
| #include <stdbool.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include "sd-id128.h" |
| |
| #include "efivars-fundamental.h" |
| #include "time-util.h" |
| |
| #define EFI_VENDOR_LOADER SD_ID128_MAKE(4a,67,b0,82,0a,4c,41,cf,b6,c7,44,0b,29,bb,8c,4f) |
| #define EFI_VENDOR_LOADER_STR SD_ID128_MAKE_UUID_STR(4a,67,b0,82,0a,4c,41,cf,b6,c7,44,0b,29,bb,8c,4f) |
| #define EFI_VENDOR_GLOBAL SD_ID128_MAKE(8b,e4,df,61,93,ca,11,d2,aa,0d,00,e0,98,03,2b,8c) |
| #define EFI_VENDOR_GLOBAL_STR SD_ID128_MAKE_UUID_STR(8b,e4,df,61,93,ca,11,d2,aa,0d,00,e0,98,03,2b,8c) |
| #define EFI_VENDOR_SYSTEMD SD_ID128_MAKE(8c,f2,64,4b,4b,0b,42,8f,93,87,6d,87,60,50,dc,67) |
| #define EFI_VENDOR_SYSTEMD_STR SD_ID128_MAKE_UUID_STR(8c,f2,64,4b,4b,0b,42,8f,93,87,6d,87,60,50,dc,67) |
| |
| #define EFI_VARIABLE_NON_VOLATILE UINT32_C(0x00000001) |
| #define EFI_VARIABLE_BOOTSERVICE_ACCESS UINT32_C(0x00000002) |
| #define EFI_VARIABLE_RUNTIME_ACCESS UINT32_C(0x00000004) |
| |
| /* Note that the <lowercaseuuid>-<varname> naming scheme is an efivarfs convention, i.e. part of the Linux |
| * API file system implementation for EFI. EFI itself processes UIDS in binary form. |
| */ |
| |
| #define EFI_VENDOR_VARIABLE_STR(vendor, name) name "-" vendor |
| |
| #define EFI_GLOBAL_VARIABLE_STR(name) EFI_VENDOR_VARIABLE_STR(EFI_VENDOR_GLOBAL_STR, name) |
| #define EFI_LOADER_VARIABLE_STR(name) EFI_VENDOR_VARIABLE_STR(EFI_VENDOR_LOADER_STR, name) |
| #define EFI_SYSTEMD_VARIABLE_STR(name) EFI_VENDOR_VARIABLE_STR(EFI_VENDOR_SYSTEMD_STR, name) |
| |
| #define EFI_GLOBAL_VARIABLE(name) EFI_GLOBAL_VARIABLE_STR(STRINGIFY(name)) |
| #define EFI_LOADER_VARIABLE(name) EFI_LOADER_VARIABLE_STR(STRINGIFY(name)) |
| #define EFI_SYSTEMD_VARIABLE(name) EFI_SYSTEMD_VARIABLE_STR(STRINGIFY(name)) |
| |
| #define EFIVAR_PATH(variable) "/sys/firmware/efi/efivars/" variable |
| #define EFIVAR_CACHE_PATH(variable) "/run/systemd/efivars/" variable |
| |
| #if ENABLE_EFI |
| |
| int efi_get_variable(const char *variable, uint32_t *attribute, void **ret_value, size_t *ret_size); |
| int efi_get_variable_string(const char *variable, char **ret); |
| int efi_set_variable(const char *variable, const void *value, size_t size); |
| int efi_set_variable_string(const char *variable, const char *p); |
| |
| bool is_efi_boot(void); |
| bool is_efi_secure_boot(void); |
| SecureBootMode efi_get_secure_boot_mode(void); |
| |
| int cache_efi_options_variable(void); |
| int systemd_efi_options_variable(char **ret); |
| int systemd_efi_options_efivarfs_if_newer(char **ret); |
| |
| #else |
| |
| static inline int efi_get_variable(const char *variable, uint32_t *attribute, void **value, size_t *size) { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int efi_get_variable_string(const char *variable, char **ret) { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int efi_set_variable(const char *variable, const void *value, size_t size) { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int efi_set_variable_string(const char *variable, const char *p) { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline bool is_efi_boot(void) { |
| return false; |
| } |
| |
| static inline bool is_efi_secure_boot(void) { |
| return false; |
| } |
| |
| static inline SecureBootMode efi_get_secure_boot_mode(void) { |
| return SECURE_BOOT_UNKNOWN; |
| } |
| |
| static inline int cache_efi_options_variable(void) { |
| return -EOPNOTSUPP; |
| } |
| |
| static inline int systemd_efi_options_variable(char **line) { |
| return -ENODATA; |
| } |
| |
| static inline int systemd_efi_options_efivarfs_if_newer(char **line) { |
| return -ENODATA; |
| } |
| #endif |