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