On Fri, Aug 23, 2019 at 12:55:30PM -0700, Scott Branden wrote:
On 2019-08-23 5:29 a.m., Takashi Iwai wrote:
On Thu, 22 Aug 2019 21:24:45 +0200, Scott Branden wrote:
Add kernel_pread_file* support to kernel to allow for partial read of files with an offset into the file. Existing kernel_read_file functions call new kernel_pread_file functions with offset=0 and flags=KERNEL_PREAD_FLAG_WHOLE.
Would this change passes the security check like ima? I thought security_kernel_post_read_file() checks the whole content for calculating the hash...
It passes the fw_run_tests.sh. How do you test the firmware loader passes this security check?
Its not a security check per code, its an audit of the code, to ensure that no new cases are not covered and its why I had CC'd Mimi. The question lies in *if* the approach exposes a new interface which cannot be attested. Its unclear to me if we can attest currently through security modules the fallback interface, as there are not APIs with a respective callback yet.