src/shared/efi-api.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include "efivars-fundamental.h"
   5 #include "efivars.h"
   6 #include "string-util.h"
   7
   8 /* Various calls for interfacing with EFI variables from the official UEFI specs. */
   9
  10 #if ENABLE_EFI
  11
  12 int efi_reboot_to_firmware_supported(void);
  13 int efi_get_reboot_to_firmware(void);
  14 int efi_set_reboot_to_firmware(bool value);
  15
  16 int efi_get_boot_option(uint16_t nr, char **ret_title, sd_id128_t *ret_part_uuid, char **ret_path, bool *ret_active);
  17 int efi_add_boot_option(uint16_t id, const char *title, uint32_t part, uint64_t pstart, uint64_t psize, sd_id128_t part_uuid, const char *path);
  18 int efi_remove_boot_option(uint16_t id);
  19 int efi_get_boot_order(uint16_t **ret_order);
  20 int efi_set_boot_order(const uint16_t *order, size_t n);
  21 int efi_get_boot_options(uint16_t **ret_options);
  22
  23 bool efi_has_tpm2(void);
  24
  25 #else
  26
  27 static inline int efi_reboot_to_firmware_supported(void) {
  28         return -EOPNOTSUPP;
  29 }
  30
  31 static inline int efi_get_reboot_to_firmware(void) {
  32         return -EOPNOTSUPP;
  33 }
  34
  35 static inline int efi_set_reboot_to_firmware(bool value) {
  36         return -EOPNOTSUPP;
  37 }
  38
  39 static inline int efi_get_boot_option(uint16_t nr, char **ret_title, sd_id128_t *ret_part_uuid, char **ret_path, bool *ret_active) {
  40         return -EOPNOTSUPP;
  41 }
  42
  43 static inline int efi_add_boot_option(uint16_t id, const char *title, uint32_t part, uint64_t pstart, uint64_t psize, sd_id128_t part_uuid, const char *path) {
  44         return -EOPNOTSUPP;
  45 }
  46
  47 static inline int efi_remove_boot_option(uint16_t id) {
  48         return -EOPNOTSUPP;
  49 }
  50
  51 static inline int efi_get_boot_order(uint16_t **ret_order) {
  52         return -EOPNOTSUPP;
  53 }
  54
  55 static inline int efi_set_boot_order(const uint16_t *order, size_t n) {
  56         return -EOPNOTSUPP;
  57 }
  58
  59 static inline int efi_get_boot_options(uint16_t **ret_options) {
  60         return -EOPNOTSUPP;
  61 }
  62
  63 static inline bool efi_has_tpm2(void) {
  64         return false;
  65 }
  66
  67 #endif
  68
  69 static inline char *efi_tilt_backslashes(char *s) {
  70         return string_replace_char(s, '\\', '/');
  71 }
  72
  73 sd_id128_t efi_guid_to_id128(const void *guid);
  74 void efi_id128_to_guid(sd_id128_t id, void *ret_guid);