ima: Support platform keyring for kernel appraisal

On secure boot enabled systems, the bootloader verifies the kernel
image and possibly the initramfs signatures based on a set of keys. A
soft reboot(kexec) of the system, with the same kernel image and
initramfs, requires access to the original keys to verify the
signatures.

This patch allows IMA-appraisal access to those original keys, now
loaded on the platform keyring, needed for verifying the kernel image
and initramfs signatures.

[[email protected]: only use platform keyring if it's enabled (Thiago)]
Signed-off-by: Nayna Jain <[email protected]>
Reviewed-by: Mimi Zohar <[email protected]>
Acked-by: Serge Hallyn <[email protected]>
Reviewed-by: James Morris <[email protected]>
Reviewed-by: Thiago Jung Bauermann <[email protected]>
Signed-off-by: Mimi Zohar <[email protected]>

0 files changed, 0 insertions, 0 deletions