831bec1163
We started out having Linux compatible libefivar interfaces. This was in anticipation of porting the GPL'd efibootmgr to FreeBSD via a port. However, since we need that functionality in the base, that port isn't going to happened. It also appears that efivar is a private library that's not used much outside a command line util and efibootmgr. Reduce compatibility with the Linux version a little by removing the mode parameter to efi_set_variable (which was unused on FreeBSD, and not set to something useful in the code we'd written). Also remove some efi error routines that were never implemented and existed only to placate early GPL efibootmgr porting experiments. Suggested by: Matt Williams Sponsored by: Netflix
103 lines
3.8 KiB
C
103 lines
3.8 KiB
C
/*-
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* Copyright (c) 2016 Netflix, Inc.
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* All rights reserved.
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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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* in this position and unchanged.
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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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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