powerpc/ima: Define trusted boot policy (1917855f) · Commits · 戴 / test

arch/powerpc/kernel/ima_arch.c

+32 −1

Original line number	Diff line number	Diff line
		@@ -30,6 +30,32 @@ static const char *const secure_rules[] = {
		NULL
		};

		/*
		* The "trusted_rules" are enabled only on "trustedboot" enabled systems.
		* These rules add the kexec kernel image and kernel modules file hashes to
		* the IMA measurement list.
		*/
		static const char *const trusted_rules[] = {
		"measure func=KEXEC_KERNEL_CHECK",
		"measure func=MODULE_CHECK",
		NULL
		};

		/*
		* The "secure_and_trusted_rules" contains rules for both the secure boot and
		* trusted boot. The "template=ima-modsig" option includes the appended
		* signature, when available, in the IMA measurement list.
		*/
		static const char *const secure_and_trusted_rules[] = {
		"measure func=KEXEC_KERNEL_CHECK template=ima-modsig",
		"measure func=MODULE_CHECK template=ima-modsig",
		"appraise func=KEXEC_KERNEL_CHECK appraise_type=imasig\|modsig",
		#ifndef CONFIG_MODULE_SIG_FORCE
		"appraise func=MODULE_CHECK appraise_type=imasig\|modsig",
		#endif
		NULL
		};

		/*
		* Returns the relevant IMA arch-specific policies based on the system secure
		* boot state.
		@@ -37,7 +63,12 @@ static const char *const secure_rules[] = {
		const char const arch_get_ima_policy(void)
		{
		if (is_ppc_secureboot_enabled())
		if (is_ppc_trustedboot_enabled())
		return secure_and_trusted_rules;
		else
		return secure_rules;
		else if (is_ppc_trustedboot_enabled())
		return trusted_rules;

		return NULL;
		}