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Fri, 30 Oct 2020 06:09:11 +0000 Received: from AM6PR04MB4919.eurprd04.prod.outlook.com ([fe80::f063:76fc:db1a:905b]) by AM6PR04MB4919.eurprd04.prod.outlook.com ([fe80::f063:76fc:db1a:905b%6]) with mapi id 15.20.3477.035; Fri, 30 Oct 2020 06:09:11 +0000 From: Chester Lin To: ardb@kernel.org, zohar@linux.ibm.com, jmorris@namei.org, serge@hallyn.com, dmitry.kasatkin@gmail.com, catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com CC: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, x86@kernel.org, jlee@suse.com, clin@suse.com Subject: [PATCH v3 0/3] add ima_arch support for ARM64 Date: Fri, 30 Oct 2020 14:08:37 +0800 Message-ID: <20201030060840.1810-1-clin@suse.com> X-Mailer: git-send-email 2.28.0 X-Originating-IP: [36.225.26.227] X-ClientProxiedBy: HK0PR01CA0049.apcprd01.prod.exchangelabs.com (2603:1096:203:a6::13) To AM6PR04MB4919.eurprd04.prod.outlook.com (2603:10a6:20b:c::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (36.225.26.227) by HK0PR01CA0049.apcprd01.prod.exchangelabs.com (2603:1096:203:a6::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3499.19 via Frontend Transport; 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Some IMA functions can check arch-specific status before running. For example, the ima_load_data function or the boot param "ima_appraise=" should not be executed when UEFI secure boot is enabled. We want to fill the gap in order to complete the IMA support on ARM64. Changes in v3: - Generalize efi_get_secureboot() so both ima_arch and efistub can reuse it. - Implement ima_get_efi_secureboot() as the replacement of get_sb_mode() so x86 and arm64 can share the same logic. Changes in v2: - Separate get_sb_mode() from x86 so all EFI-based architectures can reuse the same function. - Refactor arch/arm64/kernel/ima_arch.c based on Ard's patch[1]. Test platforms: - ARM64: QEMU [aarch64-virt] + EDK2/OVMF - ARM64: NXP LX2160A-RDB + EDK2 - X86_64: Dell Lattitude 7490 + (BIOS 1.14.0 01/22/2020) [1] https://www.spinics.net/lists/linux-efi/msg20645.html Chester Lin (3): efi: generalize efi_get_secureboot ima: remove get_sb_mode() and create ima_get_efi_secureboot() arm64/ima: add ima_arch support arch/arm64/Kconfig | 1 + arch/arm64/kernel/Makefile | 2 + arch/arm64/kernel/ima_arch.c | 43 +++++++++++++ arch/x86/kernel/ima_arch.c | 69 +++++--------------- drivers/firmware/efi/libstub/Makefile | 2 +- drivers/firmware/efi/libstub/efi-stub.c | 2 +- drivers/firmware/efi/libstub/efistub.h | 22 ++++--- drivers/firmware/efi/libstub/secureboot.c | 76 ----------------------- drivers/firmware/efi/libstub/x86-stub.c | 2 +- include/linux/efi.h | 41 +++++++++++- include/linux/ima.h | 10 +++ security/integrity/ima/Makefile | 1 + security/integrity/ima/ima_efi.c | 26 ++++++++ 13 files changed, 154 insertions(+), 143 deletions(-) create mode 100644 arch/arm64/kernel/ima_arch.c delete mode 100644 drivers/firmware/efi/libstub/secureboot.c create mode 100644 security/integrity/ima/ima_efi.c