From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mZ96O-005OQO-MZ for kexec@lists.infradead.org; Sat, 09 Oct 2021 09:57:14 +0000 Received: by mail-pg1-f200.google.com with SMTP id z7-20020a63c047000000b0026b13e40309so3255804pgi.19 for ; Sat, 09 Oct 2021 02:55:16 -0700 (PDT) From: Coiby Xu Subject: [PATCH v2 1/2] kexec, KEYS: make the code in bzImage64_verify_sig generic Date: Sat, 9 Oct 2021 17:54:57 +0800 Message-Id: <20211009095458.297191-2-coxu@redhat.com> In-Reply-To: <20211009095458.297191-1-coxu@redhat.com> References: <20211009095458.297191-1-coxu@redhat.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: kexec@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, Dave Young , Will Deacon , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "maintainer:X86 ARCHITECTURE 32-BIT AND 64-BIT" , "H. Peter Anvin" , Eric Biederman , "open list:X86 ARCHITECTURE 32-BIT AND 64-BIT" The code in bzImage64_verify_sig could make use of system keyrings including .buitin_trusted_keys, .secondary_trusted_keys and .platform keyring to verify signed kernel image as PE file. Make it generic so both x86_64 and arm64 can use it. Signed-off-by: Coiby Xu --- arch/x86/kernel/kexec-bzimage64.c | 13 +------------ include/linux/kexec.h | 3 +++ kernel/kexec_file.c | 17 +++++++++++++++++ 3 files changed, 21 insertions(+), 12 deletions(-) diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c index 170d0fd68b1f..4136dd3be5a9 100644 --- a/arch/x86/kernel/kexec-bzimage64.c +++ b/arch/x86/kernel/kexec-bzimage64.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include @@ -531,17 +530,7 @@ static int bzImage64_cleanup(void *loader_data) #ifdef CONFIG_KEXEC_BZIMAGE_VERIFY_SIG static int bzImage64_verify_sig(const char *kernel, unsigned long kernel_len) { - int ret; - - ret = verify_pefile_signature(kernel, kernel_len, - VERIFY_USE_SECONDARY_KEYRING, - VERIFYING_KEXEC_PE_SIGNATURE); - if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) { - ret = verify_pefile_signature(kernel, kernel_len, - VERIFY_USE_PLATFORM_KEYRING, - VERIFYING_KEXEC_PE_SIGNATURE); - } - return ret; + return arch_kexec_kernel_verify_pe_sig(kernel, kernel_len); } #endif diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 0c994ae37729..d45f32336dbe 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -19,6 +19,7 @@ #include #include +#include #ifdef CONFIG_KEXEC_CORE #include @@ -199,6 +200,8 @@ int arch_kimage_file_post_load_cleanup(struct kimage *image); #ifdef CONFIG_KEXEC_SIG int arch_kexec_kernel_verify_sig(struct kimage *image, void *buf, unsigned long buf_len); +int arch_kexec_kernel_verify_pe_sig(const char *kernel, + unsigned long kernel_len); #endif int arch_kexec_locate_mem_hole(struct kexec_buf *kbuf); diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 33400ff051a8..0530275b7aa3 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -106,6 +106,23 @@ int __weak arch_kexec_kernel_verify_sig(struct kimage *image, void *buf, { return kexec_image_verify_sig_default(image, buf, buf_len); } + +#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION +int arch_kexec_kernel_verify_pe_sig(const char *kernel, unsigned long kernel_len) +{ + int ret; + + ret = verify_pefile_signature(kernel, kernel_len, + VERIFY_USE_SECONDARY_KEYRING, + VERIFYING_KEXEC_PE_SIGNATURE); + if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) { + ret = verify_pefile_signature(kernel, kernel_len, + VERIFY_USE_PLATFORM_KEYRING, + VERIFYING_KEXEC_PE_SIGNATURE); + } + return ret; +} +#endif #endif /* -- 2.31.1 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec