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Diffstat (limited to 'lib/libefi/efi_getvar.c')
-rw-r--r-- | lib/libefi/efi_getvar.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/lib/libefi/efi_getvar.c b/lib/libefi/efi_getvar.c new file mode 100644 index 0000000..97e842e --- /dev/null +++ b/lib/libefi/efi_getvar.c @@ -0,0 +1,68 @@ +/*- + * Copyright (c) 2010 Marcel Moolenaar + * 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. + * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <libefi.h> +#include <stdlib.h> + +#include "libefi_int.h" + +/* + * EFI_STATUS + * GetVariable( + * IN CHAR16 *VariableName, + * IN EFI_GUID *VendorGuid, + * OUT UINT32 *Attributes OPTIONAL, + * IN OUT UINTN *DataSize, + * OUT VOID *Data + * ); + */ + +int +efi_getvar(char *name, uuid_t *vendor, uint32_t *attrib, size_t *datasize, + void *data) +{ + struct iodev_efivar_req req; + int error; + + req.namesize = 0; + error = libefi_utf8_to_ucs2(name, &req.namesize, &req.name); + if (error) + return (error); + + req.vendor = *vendor; + req.datasize = *datasize; + req.data = data; + req.access = IODEV_EFIVAR_GETVAR; + error = libefi_efivar(&req); + *datasize = req.datasize; + if (!error && attrib != NULL) + *attrib = req.attrib; + free(req.name); + return (error); +} |