Lennart Poettering
d0ddaf587f
The helper checks if the UEFI firmware is hooked up to a TPM2 chip. This is useful to know in trusted boot scenarios, in particular during early boot in auto-enroll scenarios where we want to know whether TPM2 is available or not, and the Linux drivers are not loaded yet, and where it might or not be worth waiting for it.
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <sys/stat.h>
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#include "efi-loader-features.h"
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#include "efivars.h"
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#if ENABLE_EFI
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int efi_reboot_to_firmware_supported(void);
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int efi_get_reboot_to_firmware(void);
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int efi_set_reboot_to_firmware(bool value);
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int efi_get_boot_option(uint16_t nr, char **title, sd_id128_t *part_uuid, char **path, bool *active);
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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);
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int efi_remove_boot_option(uint16_t id);
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int efi_get_boot_order(uint16_t **order);
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int efi_set_boot_order(uint16_t *order, size_t n);
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int efi_get_boot_options(uint16_t **options);
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int efi_loader_get_device_part_uuid(sd_id128_t *u);
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int efi_loader_get_boot_usec(usec_t *firmware, usec_t *loader);
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int efi_loader_get_entries(char ***ret);
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int efi_loader_get_features(uint64_t *ret);
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int efi_loader_get_config_timeout_one_shot(usec_t *ret);
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int efi_loader_update_entry_one_shot_cache(char **cache, struct stat *cache_stat);
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bool efi_has_tpm2(void);
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#else
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static inline int efi_reboot_to_firmware_supported(void) {
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return -EOPNOTSUPP;
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}
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static inline int efi_get_reboot_to_firmware(void) {
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return -EOPNOTSUPP;
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}
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static inline int efi_set_reboot_to_firmware(bool value) {
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return -EOPNOTSUPP;
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}
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static inline int efi_get_boot_option(uint16_t nr, char **title, sd_id128_t *part_uuid, char **path, bool *active) {
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return -EOPNOTSUPP;
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}
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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) {
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return -EOPNOTSUPP;
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}
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static inline int efi_remove_boot_option(uint16_t id) {
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return -EOPNOTSUPP;
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}
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static inline int efi_get_boot_order(uint16_t **order) {
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return -EOPNOTSUPP;
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}
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static inline int efi_set_boot_order(uint16_t *order, size_t n) {
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return -EOPNOTSUPP;
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}
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static inline int efi_get_boot_options(uint16_t **options) {
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return -EOPNOTSUPP;
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}
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static inline int efi_loader_get_device_part_uuid(sd_id128_t *u) {
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return -EOPNOTSUPP;
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}
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static inline int efi_loader_get_boot_usec(usec_t *firmware, usec_t *loader) {
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return -EOPNOTSUPP;
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}
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static inline int efi_loader_get_entries(char ***ret) {
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return -EOPNOTSUPP;
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}
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static inline int efi_loader_get_features(uint64_t *ret) {
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return -EOPNOTSUPP;
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}
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static inline int efi_loader_get_config_timeout_one_shot(usec_t *ret) {
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return -EOPNOTSUPP;
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}
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static inline int efi_loader_update_entry_one_shot_cache(char **cache, struct stat *cache_stat) {
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return -EOPNOTSUPP;
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}
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static inline bool efi_has_tpm2(void) {
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return false;
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}
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#endif
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bool efi_loader_entry_name_valid(const char *s);
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char *efi_tilt_backslashes(char *s);
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