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CONFIG_EVM_EXTRA_SMACK_XATTRS: Additional SMACK xattrs

General informations

The Linux kernel configuration item CONFIG_EVM_EXTRA_SMACK_XATTRS:

Help text

Include additional SMACK xattrs for HMAC calculation.

In addition to the original security xattrs (eg. security.selinux, security.SMACK64, security.capability, and security.ima) included in the HMAC calculation, enabling this option includes newly defined Smack xattrs: security.SMACK64EXEC, security.SMACK64TRANSMUTE and security.SMACK64MMAP.

WARNING: changing the HMAC calculation method or adding additional info to the calculation, requires existing EVM labeled file systems to be relabeled.

Hardware

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