mirror of
https://github.com/morgan9e/systemd
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103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#if !ENABLE_EFI
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# include <errno.h>
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#endif
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "sd-id128.h"
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#include "efivars-fundamental.h"
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#include "time-util.h"
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#define EFI_VENDOR_LOADER SD_ID128_MAKE(4a,67,b0,82,0a,4c,41,cf,b6,c7,44,0b,29,bb,8c,4f)
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#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)
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#define EFI_VENDOR_GLOBAL SD_ID128_MAKE(8b,e4,df,61,93,ca,11,d2,aa,0d,00,e0,98,03,2b,8c)
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#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)
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#define EFI_VENDOR_DATABASE SD_ID128_MAKE(d7,19,b2,cb,3d,3a,45,96,a3,bc,da,d0,0e,67,65,6f)
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#define EFI_VENDOR_DATABASE_STR SD_ID128_MAKE_UUID_STR(d7,19,b2,cb,3d,3a,45,96,a3,bc,da,d0,0e,67,65,6f)
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#define EFI_VENDOR_SYSTEMD SD_ID128_MAKE(8c,f2,64,4b,4b,0b,42,8f,93,87,6d,87,60,50,dc,67)
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#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)
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#define EFI_VARIABLE_NON_VOLATILE UINT32_C(0x00000001)
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#define EFI_VARIABLE_BOOTSERVICE_ACCESS UINT32_C(0x00000002)
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#define EFI_VARIABLE_RUNTIME_ACCESS UINT32_C(0x00000004)
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/* Note that the <lowercaseuuid>-<varname> naming scheme is an efivarfs convention, i.e. part of the Linux
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* API file system implementation for EFI. EFI itself processes UIDS in binary form.
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*/
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#define EFI_VENDOR_VARIABLE_STR(vendor, name) name "-" vendor
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#define EFI_GLOBAL_VARIABLE_STR(name) EFI_VENDOR_VARIABLE_STR(EFI_VENDOR_GLOBAL_STR, name)
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#define EFI_LOADER_VARIABLE_STR(name) EFI_VENDOR_VARIABLE_STR(EFI_VENDOR_LOADER_STR, name)
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#define EFI_SYSTEMD_VARIABLE_STR(name) EFI_VENDOR_VARIABLE_STR(EFI_VENDOR_SYSTEMD_STR, name)
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#define EFI_GLOBAL_VARIABLE(name) EFI_GLOBAL_VARIABLE_STR(STRINGIFY(name))
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#define EFI_LOADER_VARIABLE(name) EFI_LOADER_VARIABLE_STR(STRINGIFY(name))
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#define EFI_SYSTEMD_VARIABLE(name) EFI_SYSTEMD_VARIABLE_STR(STRINGIFY(name))
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#define EFIVAR_PATH(variable) "/sys/firmware/efi/efivars/" variable
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#define EFIVAR_CACHE_PATH(variable) "/run/systemd/efivars/" variable
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#if ENABLE_EFI
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int efi_get_variable(const char *variable, uint32_t *attribute, void **ret_value, size_t *ret_size);
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int efi_get_variable_string(const char *variable, char **ret);
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int efi_set_variable(const char *variable, const void *value, size_t size);
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int efi_set_variable_string(const char *variable, const char *p);
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bool is_efi_boot(void);
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bool is_efi_secure_boot(void);
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SecureBootMode efi_get_secure_boot_mode(void);
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int cache_efi_options_variable(void);
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int systemd_efi_options_variable(char **ret);
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int systemd_efi_options_efivarfs_if_newer(char **ret);
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#else
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static inline int efi_get_variable(const char *variable, uint32_t *attribute, void **value, size_t *size) {
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return -EOPNOTSUPP;
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}
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static inline int efi_get_variable_string(const char *variable, char **ret) {
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return -EOPNOTSUPP;
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}
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static inline int efi_set_variable(const char *variable, const void *value, size_t size) {
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return -EOPNOTSUPP;
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}
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static inline int efi_set_variable_string(const char *variable, const char *p) {
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return -EOPNOTSUPP;
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}
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static inline bool is_efi_boot(void) {
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return false;
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}
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static inline bool is_efi_secure_boot(void) {
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return false;
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}
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static inline SecureBootMode efi_get_secure_boot_mode(void) {
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return SECURE_BOOT_UNKNOWN;
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}
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static inline int cache_efi_options_variable(void) {
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return -EOPNOTSUPP;
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}
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static inline int systemd_efi_options_variable(char **line) {
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return -ENODATA;
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}
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static inline int systemd_efi_options_efivarfs_if_newer(char **line) {
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return -ENODATA;
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}
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#endif
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