From 755fa5ccf0834abdb7e50a1cb06fad618f6c9af6 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Mon, 9 May 2016 14:15:17 -0400 Subject: [PATCH] Add some grub_dprintf() in the secure boot verify code. Signed-off-by: Peter Jones --- grub-core/loader/efi/linux.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/grub-core/loader/efi/linux.c b/grub-core/loader/efi/linux.c index 2a7024134da..7fe7201a388 100644 --- a/grub-core/loader/efi/linux.c +++ b/grub-core/loader/efi/linux.c @@ -43,12 +43,22 @@ grub_linuxefi_secure_validate (void *data, grub_uint32_t size) shim_lock = grub_efi_locate_protocol(&guid, NULL); grub_dprintf ("secureboot", "shim_lock: %p\n", shim_lock); if (!shim_lock) - return 0; + { + grub_dprintf ("secureboot", "shim not available\n"); + return 0; + } - status = shim_lock->verify(data, size); + grub_dprintf ("secureboot", "Asking shim to verify kernel signature\n"); + status = shim_lock->verify (data, size); grub_dprintf ("secureboot", "shim_lock->verify(): %ld\n", status); if (status == GRUB_EFI_SUCCESS) - return 1; + { + grub_dprintf ("secureboot", "Kernel signature verification passed\n"); + return 1; + } + + grub_dprintf ("secureboot", "Kernel signature verification failed (0x%lx)\n", + (unsigned long) status); return -1; }