linux-support 0.0.25

Comprehensive Linux support for namespaces, cgroups, processes, scheduling, parsing /proc, parsing /sys, signals, hyper threads, CPUS, NUMA nodes, unusual file descriptors, PCI devices and much, much more
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// This file is part of linux-support. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT. No part of linux-support, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2020 The developers of linux-support. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT.


/// Speculation store ('Spectre' vulnerability) bypass status.
#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[derive(Deserialize, Serialize)]
#[serde(deny_unknown_fields)]
pub enum SpeculationStoreBypassStatus
{
	/// Linux errored internally with `EINVAL`!
	Unknown,

	/// `prctl(PR_SPEC_STORE_BYPASS)` is `PR_SPEC_NOT_AFFECTED`.
	NotVulnerable,

	/// `prctl(PR_SPEC_STORE_BYPASS)` is `PR_SPEC_PRCTL | PR_SPEC_FORCE_DISABLE`.
	ThreadForceMitigated,

	/// `prctl(PR_SPEC_STORE_BYPASS)` is `PR_SPEC_PRCTL | PR_SPEC_DISABLE`.
	ThreadMitigated,

	/// `prctl(PR_SPEC_STORE_BYPASS)` is `PR_SPEC_PRCTL | PR_SPEC_ENABLE`.
	ThreadVulnerable,

	/// `prctl(PR_SPEC_STORE_BYPASS)` is `PR_SPEC_DISABLE`.
	GloballyMitigated,

	/// `prctl(PR_SPEC_STORE_BYPASS)` is any other value to those above.
	Vulnerable,
}

impl FromBytes for SpeculationStoreBypassStatus
{
	type Error = StatusStatisticParseError;

	#[inline(always)]
	fn from_bytes(value: &[u8]) -> Result<SpeculationStoreBypassStatus, Self::Error>
	{
		use self::SpeculationStoreBypassStatus::*;

		let value = match value
		{
			b"unknown" => SpeculationStoreBypassStatus::Unknown,
			b"not vulnerable" => NotVulnerable,
			b"thread force mitigated" => ThreadForceMitigated,
			b"thread mitigated" => ThreadMitigated,
			b"thread vulnerable" => ThreadVulnerable,
			b"globally mitigated" => GloballyMitigated,
			b"vulnerable" => Vulnerable,
			_ => return Err(StatusStatisticParseError::OutOfRange),
		};
		Ok(value)
	}
}