access efi variables

From: Arend van Spriel
Date: Fri Sep 13 2013 - 11:37:46 EST


I need to obtain a uefi variable so I went looking at the API in include/linux/efi.h. I found the following definition:

/*
* The maximum size of VariableName + Data = 1024
* Therefore, it's reasonable to save that much
* space in each part of the structure,
* and we use a page for reading/writing.
*/

struct efi_variable {
efi_char16_t VariableName[1024/sizeof(efi_char16_t)];
efi_guid_t VendorGuid;
unsigned long DataSize;
__u8 Data[1024];
efi_status_t Status;
__u32 Attributes;
} __attribute__((packed));

But according to the specs the variable I need to obtain is 2k bytes. Should I expect trouble :-p

Regards,
Arend

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/