quotes_handler: Rewind measured boot log file

[ansasaki]

Rewind the file before reading its content.

Fixes: #383

Signed-off-by: Anderson Toshiyuki Sasaki ansasaki@redhat.com

[THS-on]

The measured boot log should never change after boot, so we just could keep it in memory instead of reading it again.

[maugustosilva]

I can confirm this single line change indeed fixes the problem. LGTM

[ansasaki]

The measured boot log should never change after boot, so we just could keep it in memory instead of reading it again.

This is probably the best solution. I'll make the changes towards this.

[lukehinds]

Just a nit, can the unwrap be error handled instead (I figure rewind is an Option or Result). Perhaps even .except with a meaningful error message.

EDIT: just noticed its a draft, so the above might already be your intent.

[ansasaki]

@maugustosilva Could you please check if this fixes the issue?

[ansasaki]

After some discussion, it was decided to revert the change to simply add a rewind. There is no clear benefit on holding several KB of data on memory all the time to avoid rewinding and re-reading the file which is on a memory-based file system.

[maugustosilva]

Tested both solutions, and both pass all my tests.

[ansasaki]

@lkatalin @lukehinds @ashcrow Could you review/approve this?