summaryrefslogtreecommitdiff
path: root/src/shared/efivars.h
blob: 92670c82c7d9c2aa5a59c248178f3071b6b14d9c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

#if ! ENABLE_EFI
#include <errno.h>
#endif
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

#include "sd-id128.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_GLOBAL SD_ID128_MAKE(8b,e4,df,61,93,ca,11,d2,aa,0d,00,e0,98,03,2b,8c)
#define EFI_VARIABLE_NON_VOLATILE       0x0000000000000001
#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
#define EFI_VARIABLE_RUNTIME_ACCESS     0x0000000000000004

#define EFI_LOADER_FEATURE_CONFIG_TIMEOUT          (UINT64_C(1) << 0)
#define EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT (UINT64_C(1) << 1)
#define EFI_LOADER_FEATURE_ENTRY_DEFAULT           (UINT64_C(1) << 2)
#define EFI_LOADER_FEATURE_ENTRY_ONESHOT           (UINT64_C(1) << 3)
#define EFI_LOADER_FEATURE_BOOT_COUNTING           (UINT64_C(1) << 4)

#if ENABLE_EFI

bool is_efi_boot(void);
bool is_efi_secure_boot(void);
bool is_efi_secure_boot_setup_mode(void);
int efi_reboot_to_firmware_supported(void);
int efi_get_reboot_to_firmware(void);
int efi_set_reboot_to_firmware(bool value);

int efi_get_variable(sd_id128_t vendor, const char *name, uint32_t *attribute, void **value, size_t *size);
int efi_get_variable_string(sd_id128_t vendor, const char *name, char **p);
int efi_set_variable(sd_id128_t vendor, const char *name, const void *value, size_t size);
int efi_set_variable_string(sd_id128_t vendor, const char *name, const char *p);

int efi_get_boot_option(uint16_t nr, char **title, sd_id128_t *part_uuid, char **path, bool *active);
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);
int efi_remove_boot_option(uint16_t id);
int efi_get_boot_order(uint16_t **order);
int efi_set_boot_order(uint16_t *order, size_t n);
int efi_get_boot_options(uint16_t **options);

int efi_loader_get_device_part_uuid(sd_id128_t *u);
int efi_loader_get_boot_usec(usec_t *firmware, usec_t *loader);

int efi_loader_get_entries(char ***ret);

bool efi_loader_entry_name_valid(const char *s);

int efi_loader_get_features(uint64_t *ret);

#else

static inline bool is_efi_boot(void) {
        return false;
}

static inline bool is_efi_secure_boot(void) {
        return false;
}

static inline bool is_efi_secure_boot_setup_mode(void) {
        return false;
}

static inline int efi_reboot_to_firmware_supported(void) {
        return -EOPNOTSUPP;
}

static inline int efi_get_reboot_to_firmware(void) {
        return -EOPNOTSUPP;
}

static inline int efi_set_reboot_to_firmware(bool value) {
        return -EOPNOTSUPP;
}

static inline int efi_get_variable(sd_id128_t vendor, const char *name, uint32_t *attribute, void **value, size_t *size) {
        return -EOPNOTSUPP;
}

static inline int efi_get_variable_string(sd_id128_t vendor, const char *name, char **p) {
        return -EOPNOTSUPP;
}

static inline int efi_set_variable(sd_id128_t vendor, const char *name, const void *value, size_t size) {
        return -EOPNOTSUPP;
}

static inline int efi_set_variable_string(sd_id128_t vendor, const char *name, const char *p) {
        return -EOPNOTSUPP;
}

static inline int efi_get_boot_option(uint16_t nr, char **title, sd_id128_t *part_uuid, char **path, bool *active) {
        return -EOPNOTSUPP;
}

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) {
        return -EOPNOTSUPP;
}

static inline int efi_remove_boot_option(uint16_t id) {
        return -EOPNOTSUPP;
}

static inline int efi_get_boot_order(uint16_t **order) {
        return -EOPNOTSUPP;
}

static inline int efi_set_boot_order(uint16_t *order, size_t n) {
        return -EOPNOTSUPP;
}

static inline int efi_get_boot_options(uint16_t **options) {
        return -EOPNOTSUPP;
}

static inline int efi_loader_get_device_part_uuid(sd_id128_t *u) {
        return -EOPNOTSUPP;
}

static inline int efi_loader_get_boot_usec(usec_t *firmware, usec_t *loader) {
        return -EOPNOTSUPP;
}

static inline int efi_loader_get_entries(char ***ret) {
        return -EOPNOTSUPP;
}

static inline int efi_loader_get_features(uint64_t *ret) {
        return -EOPNOTSUPP;
}

#endif

char *efi_tilt_backslashes(char *s);