Re: [PATCH] efi: Do not import certificates from UEFI Secure Boot for T2 Macs

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> ie, can you try something like this?
> 
> diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c
> index f3e54f6616f0..01cbd4811d1e 100644
> --- a/drivers/firmware/efi/runtime-wrappers.c
> +++ b/drivers/firmware/efi/runtime-wrappers.c
> @@ -32,6 +32,8 @@
> #include <linux/stringify.h>
> #include <linux/workqueue.h>
> #include <linux/completion.h>
> +#include <linux/ucs2_string.h>
> +#include <linux/slab.h>
> 
> #include <asm/efi.h>
> 
> @@ -203,6 +205,21 @@ static void efi_call_rts(struct work_struct *work)
> 				       (efi_time_t *)arg2);
> 		break;
> 	case EFI_GET_VARIABLE:
> +		unsigned long utf8_name_size;
> +		char *utf8_name;
> +		char guid_str[sizeof(efi_guid_t)+1];
> +
> +		utf8_name_size = ucs2_utf8size((efi_char16_t *)arg1);
> +		utf8_name = kmalloc(utf8_name_size+1, GFP_KERNEL);
> +		if (!utf8_name) {
> +			printk(KERN_INFO "failed to allocate UTF8 buffer\n");
> +			break;
> +		}
> +
> +		ucs2_as_utf8(utf8_name, (efi_char16_t *)arg1, utf8_name_size + 1);
> +		efi_guid_to_str((efi_guid_t *)arg2, guid_str);
> +
> +		printk(KERN_INFO "Reading EFI variable %s-%s\n", utf8_name, guid_str);
> 		status = efi_call_virt(get_variable, (efi_char16_t *)arg1,
> 				       (efi_guid_t *)arg2, (u32 *)arg3,
> 				       (unsigned long *)arg4, (void *)arg5);

Looks like there is some error in this patch


drivers/firmware/efi/runtime-wrappers.c:208:3: error: a label can only be part of a statement and a declaration is not a statement
  208 |   unsigned long utf8_name_size;
      |   ^~~~~~~~
drivers/firmware/efi/runtime-wrappers.c:209:3: error: expected expression before ‘char’
  209 |   char *utf8_name;
      |   ^~~~
drivers/firmware/efi/runtime-wrappers.c:210:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
  210 |   char guid_str[sizeof(efi_guid_t)+1];
      |   ^~~~
drivers/firmware/efi/runtime-wrappers.c:213:3: error: ‘utf8_name’ undeclared (first use in this function)
  213 |   utf8_name = kmalloc(utf8_name_size+1, GFP_KERNEL);
      |   ^~~~~~~~~
drivers/firmware/efi/runtime-wrappers.c:213:3: note: each undeclared identifier is reported only once for each function it appears in
make[6]: *** [scripts/Makefile.build:287: drivers/firmware/efi/runtime-wrappers.o] Error 1
make[5]: *** [scripts/Makefile.build:549: drivers/firmware/efi] Error 2
make[4]: *** [scripts/Makefile.build:549: drivers/firmware] Error 2
make[4]: *** Waiting for unfinished jobs....





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