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/*-
* Copyright (c) 2016 Netflix, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _EFIVAR_H_
#define _EFIVAR_H_
#include <uuid.h>
#include <sys/efi.h>
#include <sys/endian.h>
#include <stdint.h>
/* Shoud these be elsewhere ? */
#define EFI_VARIABLE_NON_VOLATILE 0x00000001
#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x00000002
#define EFI_VARIABLE_RUNTIME_ACCESS 0x00000004
#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x00000008
#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x00000010
#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS \
0x00000020
#define EFI_VARIABLE_APPEND_WRITE 0x00000040
#if 0 /* todo */
#define EFI_VARIABLE_HAS_AUTH_HEADER
#define EFI_VARIABLE_HAS_SIGNATURE
#endif
#ifndef _EFIVAR_EFI_GUID_T_DEF
#define _EFIVAR_EFI_GUID_T_DEF
typedef uuid_t efi_guid_t;
#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), (d) >> 8, (d) & 0xff, \
{ (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) & 0xff, (d) >> 8, \
{ (e0), (e1), (e2), (e3), (e4), (e5) }})
#endif
#define EFI_GLOBAL_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa0d, \
0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
int efi_append_variable(efi_guid_t guid, const char *name,
uint8_t *data, size_t data_size, uint32_t attributes);
int efi_del_variable(efi_guid_t guid, const char *name);
int efi_get_variable(efi_guid_t guid, const char *name,
uint8_t **data, size_t *data_size, uint32_t *attributes);
int efi_get_variable_attributes(efi_guid_t guid, const char *name,
uint32_t *attributes);
int efi_get_variable_size(efi_guid_t guid, const char *name, size_t *size);
int efi_get_next_variable_name(efi_guid_t **guid, char **name);
int efi_guid_cmp(const efi_guid_t *guid1, const efi_guid_t *guid2);
int efi_guid_is_zero(const efi_guid_t *guid1);
int efi_guid_to_name(efi_guid_t *guid, char **name);
int efi_guid_to_symbol(efi_guid_t *guid, char **symbol);
int efi_guid_to_str(const efi_guid_t *guid, char **sp);
int efi_name_to_guid(const char *name, efi_guid_t *guid);
int efi_set_variable(efi_guid_t guid, const char *name,
uint8_t *data, size_t data_size, uint32_t attributes, mode_t mode);
int efi_str_to_guid(const char *s, efi_guid_t *guid);
int efi_variables_supported(void);
/* FreeBSD extensions */
struct uuid_table
{
const char *uuid_str;
const char *name;
efi_guid_t guid;
};
int efi_known_guid(struct uuid_table **);
extern const efi_guid_t efi_guid_empty;
/* Stubs that are expected, but aren't really used */
static inline int
efi_error_get(unsigned int n __unused, char ** const fn __unused,
char ** const func __unused, int *line __unused,
char ** const msg __unused, int *err __unused)
{
return 0;
}
static inline int
efi_error_set(const char *fn __unused, const char *func __unused,
int line __unused, int err __unused, const char *fmt __unused, ...)
{
return 0;
}
static inline void
efi_error_clear(void)
{
}
static inline int
efi_error(const char *fmt __unused, ...)
{
return 0;
}
static inline int
efi_error_val(int val __unused, const char *fmt __unused, ...)
{
return 0;
}
#endif /* _EFIVAR_H_ */
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