[PATCH v7 09/12] evm: Deprecate EVM_ALLOW_METADATA_WRITES
From: Roberto Sassu <roberto.sassu@huawei.com>
Date: 2021-05-14 15:29:38
Also in:
linux-security-module, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
This patch deprecates the usage of EVM_ALLOW_METADATA_WRITES, as it is no longer necessary. All the issues that prevent the usage of EVM portable signatures just with a public key loaded have been solved. This flag will remain available for a short time to ensure that users are able to use EVM without it. Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> --- Documentation/ABI/testing/evm | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/Documentation/ABI/testing/evm b/Documentation/ABI/testing/evm
index 2243b72e4110..553fd8a33e56 100644
--- a/Documentation/ABI/testing/evm
+++ b/Documentation/ABI/testing/evm@@ -24,7 +24,7 @@ Description: 1 Enable digital signature validation 2 Permit modification of EVM-protected metadata at runtime. Not supported if HMAC validation and - creation is enabled. + creation is enabled (deprecated). 31 Disable further runtime modification of EVM policy === ==================================================
@@ -47,7 +47,13 @@ Description: will enable digital signature validation, permit modification of EVM-protected metadata and - disable all further modification of policy + disable all further modification of policy. This option is now + deprecated in favor of:: + + echo 0x80000002 ><securityfs>/evm + + as the outstanding issues that prevent the usage of EVM portable + signatures have been solved. Echoing a value is additive, the new value is added to the existing initialization flags.
--
2.25.1