41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
From 13a69d9c2a2a474ed8a433820370fa5e6a62e60c Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Mon, 9 May 2016 14:15:17 -0400
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Subject: [PATCH] Add some grub_dprintf() in the secure boot verify code.
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Signed-off-by: Peter Jones <pjones@redhat.com>
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---
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grub-core/loader/efi/linux.c | 16 +++++++++++++---
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1 file changed, 13 insertions(+), 3 deletions(-)
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diff --git a/grub-core/loader/efi/linux.c b/grub-core/loader/efi/linux.c
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index 2a7024134da..7fe7201a388 100644
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--- a/grub-core/loader/efi/linux.c
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+++ b/grub-core/loader/efi/linux.c
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@@ -43,12 +43,22 @@ grub_linuxefi_secure_validate (void *data, grub_uint32_t size)
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shim_lock = grub_efi_locate_protocol(&guid, NULL);
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grub_dprintf ("secureboot", "shim_lock: %p\n", shim_lock);
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if (!shim_lock)
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- return 0;
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+ {
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+ grub_dprintf ("secureboot", "shim not available\n");
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+ return 0;
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+ }
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- status = shim_lock->verify(data, size);
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+ grub_dprintf ("secureboot", "Asking shim to verify kernel signature\n");
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+ status = shim_lock->verify (data, size);
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grub_dprintf ("secureboot", "shim_lock->verify(): %ld\n", status);
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if (status == GRUB_EFI_SUCCESS)
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- return 1;
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+ {
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+ grub_dprintf ("secureboot", "Kernel signature verification passed\n");
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+ return 1;
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+ }
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+
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+ grub_dprintf ("secureboot", "Kernel signature verification failed (0x%lx)\n",
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+ (unsigned long) status);
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return -1;
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}
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