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security: Only show prompt when unlocking #45

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merged 1 commit into from
Jun 24, 2024
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crawfxrd
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Do not show the unlock prompt when the system is already unlocked or preparing to lock.

Do not show the unlock prompt when the system is already unlocked or
preparing to lock.

Signed-off-by: Tim Crawford <[email protected]>
@crawfxrd crawfxrd marked this pull request as ready for review June 18, 2024 19:24
@crawfxrd crawfxrd requested review from jackpot51 and a team June 18, 2024 19:24
@leviport leviport self-assigned this Jun 19, 2024
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I now only see the prompt when the state is PrepareUnlock.

If the state is PrepareUnlock but I've only rebooted the machine, I still get a pointless prompt, since completing this prompt does not change the state from PrepareUnlock. This makes the ectool script seem broken. However, if I shut down like the prompt tells me to, the state does change like it should after I complete the prompt.

Another observation: after locking or unlocking with the ectool script and shutting down, the machine reboots itself automatically without having to press the power button. This doesn't really have anything to do with this PR, but I found it interesting enough to mention.

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Machine must be shutdown after unlocking to go from PREPARE_UNLOCK to UNLOCK. The EC has special logic to set ME_WE and automatically power back on.

@jackpot51 jackpot51 merged commit 771911a into master Jun 24, 2024
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@jackpot51 jackpot51 deleted the unlock-prompt branch June 24, 2024 19:36
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3 participants