This file is indexed.

/usr/include/efivar/efivar.h is in libefivar-dev 0.23-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
/*
 * libefivar - library for the manipulation of EFI variables
 * Copyright 2012-2014 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef EFIVAR_H
#define EFIVAR_H 1

#include <endian.h>
#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <byteswap.h>

typedef struct {
	uint32_t	a;
	uint16_t	b;
	uint16_t	c;
	uint16_t	d;
	uint8_t		e[6];
} efi_guid_t;

#ifndef EFIVAR_BUILD_ENVIRONMENT
#include <efivar-guids.h>
#endif

#if BYTE_ORDER == LITTLE_ENDIAN
#define EFI_GUID(a,b,c,d,e0,e1,e2,e3,e4,e5) \
((efi_guid_t) {(a), (b), (c), bswap_16(d), { (e0), (e1), (e2), (e3), (e4), (e5) }})
#else
#define EFI_GUID(a,b,c,d,e0,e1,e2,e3,e4,e5) \
((efi_guid_t) {(a), (b), (c), (d), { (e0), (e1), (e2), (e3), (e4), (e5) }})
#endif

#define EFI_GLOBAL_GUID EFI_GUID(0x8be4df61,0x93ca,0x11d2,0xaa0d,0x00,0xe0,0x98,0x03,0x2b,0x8c)

#define EFI_VARIABLE_NON_VOLATILE	0x0000000000000001
#define EFI_VARIABLE_BOOTSERVICE_ACCESS	0x0000000000000002
#define EFI_VARIABLE_RUNTIME_ACCESS	0x0000000000000004
#define EFI_VARIABLE_HARDWARE_ERROR_RECORD	0x0000000000000008
#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS	0x0000000000000010
#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
#define EFI_VARIABLE_APPEND_WRITE	0x0000000000000040

#define EFI_VARIABLE_HAS_AUTH_HEADER	0x0000000100000000
#define EFI_VARIABLE_HAS_SIGNATURE	0x0000000200000000

extern int efi_variables_supported(void);
extern int efi_get_variable_size(efi_guid_t guid, const char *name,
				 size_t *size)
				__attribute__((__nonnull__ (2, 3)));
extern int efi_get_variable_attributes(efi_guid_t, const char *name,
				       uint32_t *attributes)
				__attribute__((__nonnull__ (2, 3)));
extern int efi_get_variable(efi_guid_t guid, const char *name, uint8_t **data,
			    size_t *data_size, uint32_t *attributes)
				__attribute__((__nonnull__ (2, 3, 4, 5)));
extern int efi_del_variable(efi_guid_t guid, const char *name)
				__attribute__((__nonnull__ (2)));
extern int _efi_set_variable(efi_guid_t guid, const char *name,
			     uint8_t *data, size_t data_size,
			     uint32_t attributes, mode_t mode)
			    __attribute__((__nonnull__ (2, 3)));
extern int _efi_set_variable_variadic(efi_guid_t guid, const char *name,
				      uint8_t *data, size_t data_size,
				      uint32_t attributes, ...);
				     __attribute__((__nonnull__ (2, 3)))
extern inline int
__attribute__((__gnu_inline__))
__attribute__((__artificial__))
__attribute__((__visibility__ ("default")))
efi_set_variable(efi_guid_t guid, const char *name,
			       uint8_t *data, size_t data_size,
			       uint32_t attributes, ...)
{
	if (__builtin_va_arg_pack_len() != 0 &&
			__builtin_va_arg_pack_len() != 1) {
		errno = EINVAL;
		return -1;
	}

	if (__builtin_va_arg_pack_len() == 0)
		return _efi_set_variable(guid, name, data, data_size,
					 attributes, 0644);

	return _efi_set_variable_variadic(guid, name, data, data_size,
					  attributes, __builtin_va_arg_pack());
}

extern int efi_append_variable(efi_guid_t guid, const char *name,
			       uint8_t *data, size_t data_size,
			       uint32_t attributes)
			      __attribute__((__nonnull__ (2, 3)));
extern int efi_get_next_variable_name(efi_guid_t **guid, char **name)
			      __attribute__((__nonnull__ (1, 2)));
extern int efi_chmod_variable(efi_guid_t guid, const char *name, mode_t mode)
			      __attribute__((__nonnull__ (2)));

extern int efi_str_to_guid(const char *s, efi_guid_t *guid)
			  __attribute__((__nonnull__ (1, 2)));
extern int efi_guid_to_str(const efi_guid_t *guid, char **sp)
			  __attribute__((__nonnull__ (1)));
extern int efi_guid_to_id_guid(const efi_guid_t *guid, char **sp)
			      __attribute__((__nonnull__ (1)));
extern int efi_guid_to_symbol(efi_guid_t *guid, char **symbol)
			     __attribute__((__nonnull__ (1, 2)));
extern int efi_guid_to_name(efi_guid_t *guid, char **name)
			   __attribute__((__nonnull__ (1, 2)));
extern int efi_name_to_guid(const char *name, efi_guid_t *guid)
			   __attribute__((__nonnull__ (1, 2)));
extern int efi_id_guid_to_guid(const char *name, efi_guid_t *guid)
			      __attribute__((__nonnull__ (1, 2)));
extern int efi_symbol_to_guid(const char *symbol, efi_guid_t *guid)
			     __attribute__((__nonnull__ (1, 2)));

static inline int
__attribute__ ((unused))
__attribute__((__nonnull__ (1, 2)))
efi_guid_cmp(const efi_guid_t *a, const efi_guid_t *b)
{
	return memcmp(a, b, sizeof (efi_guid_t));
}

extern const efi_guid_t efi_guid_zero;

static inline int
__attribute__ ((unused))
__attribute__((__nonnull__ (1)))
efi_guid_is_zero(const efi_guid_t *guid)
{
	return !efi_guid_cmp(guid,&efi_guid_zero);
}
extern int
efi_guid_is_empty(const efi_guid_t *guid)
__attribute__ ((unused))
__attribute__((__nonnull__ (1)))
__attribute__((__visibility__ ("default")))
__attribute__ ((weak, alias ("efi_guid_is_zero")));

/* import / export functions */
typedef struct efi_variable efi_variable_t;

extern ssize_t efi_variable_import(uint8_t *data, size_t size,
				efi_variable_t **var)
			__attribute__((__nonnull__ (1, 3)));
extern ssize_t efi_variable_export(efi_variable_t *var, uint8_t *data,
				size_t size)
			__attribute__((__nonnull__ (1)));

extern efi_variable_t *efi_variable_alloc(void)
			__attribute__((__visibility__ ("default")));
extern void efi_variable_free(efi_variable_t *var, int free_data);

extern int efi_variable_set_name(efi_variable_t *var, char *name)
			__attribute__((__nonnull__ (1, 2)));
extern char *efi_variable_get_name(efi_variable_t *var)
			__attribute__((__visibility__ ("default")))
			__attribute__((__nonnull__ (1)));

extern int efi_variable_set_guid(efi_variable_t *var, efi_guid_t *guid)
			__attribute__((__nonnull__ (1, 2)));
extern int efi_variable_get_guid(efi_variable_t *var, efi_guid_t **guid)
			__attribute__((__nonnull__ (1, 2)));

extern int efi_variable_set_data(efi_variable_t *var, uint8_t *data,
				size_t size)
			__attribute__((__nonnull__ (1, 2)));
extern ssize_t efi_variable_get_data(efi_variable_t *var, uint8_t **data,
				size_t *size)
			__attribute__((__nonnull__ (1, 2, 3)));

extern int efi_variable_set_attributes(efi_variable_t *var, uint64_t attrs)
			__attribute__((__nonnull__ (1)));
extern int efi_variable_get_attributes(efi_variable_t *var, uint64_t *attrs)
			__attribute__((__nonnull__ (1, 2)));

extern int efi_variable_realize(efi_variable_t *var)
			__attribute__((__nonnull__ (1)));

#include <efivar-dp.h>

#endif /* EFIVAR_H */