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stand/efi/libefi/efienv.c
- This file was copied from stand/efi/include/efizfs.h.
| /*- | /*- | ||||
| * Copyright (c) 2016 Eric McCorkle | * Copyright (c) 2018 Netflix, Inc. | ||||
| * All rights reserved. | * All rights reserved. | ||||
| * | * | ||||
| * Redistribution and use in source and binary forms, with or without | * Redistribution and use in source and binary forms, with or without | ||||
| * modification, are permitted provided that the following conditions | * modification, are permitted provided that the following conditions | ||||
| * are met: | * are met: | ||||
| * 1. Redistributions of source code must retain the above copyright | * 1. Redistributions of source code must retain the above copyright | ||||
| * notice, this list of conditions and the following disclaimer. | * notice, this list of conditions and the following disclaimer. | ||||
| * 2. Redistributions in binary form must reproduce the above copyright | * 2. Redistributions in binary form must reproduce the above copyright | ||||
| * notice, this list of conditions and the following disclaimer in the | * notice, this list of conditions and the following disclaimer in the | ||||
| * documentation and/or other materials provided with the distribution. | * documentation and/or other materials provided with the distribution. | ||||
| * | * | ||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | ||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | ||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | * 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 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
| * SUCH DAMAGE. | * SUCH DAMAGE. | ||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | */ | ||||
| #include <stdint.h> | #include <sys/cdefs.h> | ||||
| #include <stdbool.h> | __FBSDID("$FreeBSD$"); | ||||
| #ifndef _EFIZFS_H_ | #include <stand.h> | ||||
| #define _EFIZFS_H_ | #include <efi.h> | ||||
| #include <efichar.h> | |||||
| #include <efilib.h> | |||||
| #ifdef EFI_ZFS_BOOT | static EFI_GUID FreeBSDBootVarGUID = FREEBSD_BOOT_VAR_GUID; | ||||
| typedef STAILQ_HEAD(zfsinfo_list, zfsinfo) zfsinfo_list_t; | static EFI_GUID GlobalBootVarGUID = UEFI_BOOT_VAR_GUID; | ||||
| typedef struct zfsinfo | EFI_STATUS | ||||
| efi_getenv(EFI_GUID *g, const char *v, void *data, size_t *len) | |||||
| { | { | ||||
| STAILQ_ENTRY(zfsinfo) zi_link; | size_t ul; | ||||
| EFI_HANDLE zi_handle; | CHAR16 *uv; | ||||
| uint64_t zi_pool_guid; | UINT32 attr; | ||||
| } zfsinfo_t; | UINTN dl; | ||||
| EFI_STATUS rv; | |||||
| extern uint64_t pool_guid; | uv = NULL; | ||||
| if (utf8_to_ucs2(v, &uv, &ul) != 0) | |||||
| return (EFI_OUT_OF_RESOURCES); | |||||
| dl = *len; | |||||
| rv = RS->GetVariable(uv, g, &attr, &dl, data); | |||||
| if (rv == EFI_SUCCESS) | |||||
| *len = dl; | |||||
| free(uv); | |||||
| return (rv); | |||||
| } | |||||
| extern void efi_zfs_probe(void); | EFI_STATUS | ||||
| extern zfsinfo_list_t *efizfs_get_zfsinfo_list(void); | efi_global_getenv(const char *v, void *data, size_t *len) | ||||
| extern bool efi_zfs_is_preferred(EFI_HANDLE *h); | { | ||||
| extern EFI_HANDLE efizfs_get_handle_by_guid(uint64_t); | |||||
| #endif | return (efi_getenv(&GlobalBootVarGUID, v, data, len)); | ||||
| } | |||||
| #endif | EFI_STATUS | ||||
| efi_freebsd_getenv(const char *v, void *data, size_t *len) | |||||
| { | |||||
| return (efi_getenv(&FreeBSDBootVarGUID, v, data, len)); | |||||
| } | |||||
| EFI_STATUS | |||||
| efi_setenv_freebsd_wcs(const char *varname, CHAR16 *valstr) | |||||
| { | |||||
| CHAR16 *var = NULL; | |||||
| size_t len; | |||||
| EFI_STATUS rv; | |||||
| if (utf8_to_ucs2(varname, &var, &len) != 0) | |||||
| return (EFI_OUT_OF_RESOURCES); | |||||
| rv = RS->SetVariable(var, &FreeBSDBootVarGUID, | |||||
| EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS, | |||||
| (ucs2len(valstr) + 1) * sizeof(efi_char), valstr); | |||||
| free(var); | |||||
| return (rv); | |||||
| } | |||||