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Diffstat (limited to 'lib/libefivar/efivar.h')
-rw-r--r-- | lib/libefivar/efivar.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/lib/libefivar/efivar.h b/lib/libefivar/efivar.h new file mode 100644 index 0000000..cba8a8e --- /dev/null +++ b/lib/libefivar/efivar.h @@ -0,0 +1,135 @@ +/*- + * 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_ */ |