vmm: error if landlock can't be enabled - #7335
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Since the user has to explicitly ask for Landlock to be enabled in Cloud Hypervisor, it's surprising that, even when they've done that, Landlock will silently not be enabled if the kernel doesn't support it. To prevent accidental absence of a desired security protection, exit with an error if Landlock, or the one feature of it we use in Cloud Hypervisor (file access) is not supported. Signed-off-by: Alyssa Ross <[email protected]>
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Since the user has to explicitly ask for Landlock to be enabled in Cloud Hypervisor, it's surprising that, even when they've done that, Landlock will silently not be enabled if the kernel doesn't support it.
To prevent accidental absence of a desired security protection, exit with an error if Landlock, or the one feature of it we use in Cloud Hypervisor (file access) is not supported.