1/*- 2 * Copyright (c) 2010 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: releng/10.2/lib/libefi/efi_getvar.c 203181 2010-01-30 04:24:03Z marcel $"); 29 30#include <libefi.h> 31#include <stdlib.h> 32 33#include "libefi_int.h" 34 35/* 36 * EFI_STATUS 37 * GetVariable( 38 * IN CHAR16 *VariableName, 39 * IN EFI_GUID *VendorGuid, 40 * OUT UINT32 *Attributes OPTIONAL, 41 * IN OUT UINTN *DataSize, 42 * OUT VOID *Data 43 * ); 44 */ 45 46int 47efi_getvar(char *name, uuid_t *vendor, uint32_t *attrib, size_t *datasize, 48 void *data) 49{ 50 struct iodev_efivar_req req; 51 int error; 52 53 req.namesize = 0; 54 error = libefi_utf8_to_ucs2(name, &req.namesize, &req.name); 55 if (error) 56 return (error); 57 58 req.vendor = *vendor; 59 req.datasize = *datasize; 60 req.data = data; 61 req.access = IODEV_EFIVAR_GETVAR; 62 error = libefi_efivar(&req); 63 *datasize = req.datasize; 64 if (!error && attrib != NULL) 65 *attrib = req.attrib; 66 free(req.name); 67 return (error); 68} 69