From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Martin Subject: [RFC PATCH 1/2] ELF: UAPI and Kconfig additions for ELF program properties Date: Tue, 20 Aug 2019 10:57:42 +0100 Message-ID: <1566295063-7387-2-git-send-email-Dave.Martin@arm.com> References: <1566295063-7387-1-git-send-email-Dave.Martin@arm.com> Return-path: In-Reply-To: <1566295063-7387-1-git-send-email-Dave.Martin@arm.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, Kees Cook , Thomas Gleixner , Jann Horn , "H.J. Lu" , Eugene Syromiatnikov , Florian Weimer , Yu-cheng Yu , Peter Zijlstra List-Id: linux-arch.vger.kernel.org Pull the basic ELF definitions from Yu-Cheng Yu's series. Signed-off-by: Yu-cheng Yu Signed-off-by: Dave Martin --- This patch should be merged with the next patch. I kept it seprate for now to document where this code came from. --- fs/Kconfig.binfmt | 3 +++ include/uapi/linux/elf.h | 7 +++++++ 2 files changed, 10 insertions(+) diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt index 62dc4f5..d2cfe07 100644 --- a/fs/Kconfig.binfmt +++ b/fs/Kconfig.binfmt @@ -36,6 +36,9 @@ config COMPAT_BINFMT_ELF config ARCH_BINFMT_ELF_STATE bool +config ARCH_USE_GNU_PROPERTY + bool + config BINFMT_ELF_FDPIC bool "Kernel support for FDPIC ELF binaries" default y if !BINFMT_ELF diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h index 34c02e4..a3eaad9 100644 --- a/include/uapi/linux/elf.h +++ b/include/uapi/linux/elf.h @@ -36,6 +36,7 @@ typedef __s64 Elf64_Sxword; #define PT_LOPROC 0x70000000 #define PT_HIPROC 0x7fffffff #define PT_GNU_EH_FRAME 0x6474e550 +#define PT_GNU_PROPERTY 0x6474e553 #define PT_GNU_STACK (PT_LOOS + 0x474e551) @@ -443,4 +444,10 @@ typedef struct elf64_note { Elf64_Word n_type; /* Content type */ } Elf64_Nhdr; +/* NT_GNU_PROPERTY_TYPE_0 header */ +struct gnu_property { + __u32 pr_type; + __u32 pr_datasz; +}; + #endif /* _UAPI_LINUX_ELF_H */ -- 2.1.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from foss.arm.com ([217.140.110.172]:37860 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728414AbfHTJ6b (ORCPT ); Tue, 20 Aug 2019 05:58:31 -0400 From: Dave Martin Subject: [RFC PATCH 1/2] ELF: UAPI and Kconfig additions for ELF program properties Date: Tue, 20 Aug 2019 10:57:42 +0100 Message-ID: <1566295063-7387-2-git-send-email-Dave.Martin@arm.com> In-Reply-To: <1566295063-7387-1-git-send-email-Dave.Martin@arm.com> References: <1566295063-7387-1-git-send-email-Dave.Martin@arm.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, Kees Cook , Thomas Gleixner , Jann Horn , "H.J. Lu" , Eugene Syromiatnikov , Florian Weimer , Yu-cheng Yu , Peter Zijlstra Message-ID: <20190820095742.0xU8qRgyq9amLn_VeS7X-Iav5FFl_eJkpMNMrDu5HLY@z> Pull the basic ELF definitions from Yu-Cheng Yu's series. Signed-off-by: Yu-cheng Yu Signed-off-by: Dave Martin --- This patch should be merged with the next patch. I kept it seprate for now to document where this code came from. --- fs/Kconfig.binfmt | 3 +++ include/uapi/linux/elf.h | 7 +++++++ 2 files changed, 10 insertions(+) diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt index 62dc4f5..d2cfe07 100644 --- a/fs/Kconfig.binfmt +++ b/fs/Kconfig.binfmt @@ -36,6 +36,9 @@ config COMPAT_BINFMT_ELF config ARCH_BINFMT_ELF_STATE bool +config ARCH_USE_GNU_PROPERTY + bool + config BINFMT_ELF_FDPIC bool "Kernel support for FDPIC ELF binaries" default y if !BINFMT_ELF diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h index 34c02e4..a3eaad9 100644 --- a/include/uapi/linux/elf.h +++ b/include/uapi/linux/elf.h @@ -36,6 +36,7 @@ typedef __s64 Elf64_Sxword; #define PT_LOPROC 0x70000000 #define PT_HIPROC 0x7fffffff #define PT_GNU_EH_FRAME 0x6474e550 +#define PT_GNU_PROPERTY 0x6474e553 #define PT_GNU_STACK (PT_LOOS + 0x474e551) @@ -443,4 +444,10 @@ typedef struct elf64_note { Elf64_Word n_type; /* Content type */ } Elf64_Nhdr; +/* NT_GNU_PROPERTY_TYPE_0 header */ +struct gnu_property { + __u32 pr_type; + __u32 pr_datasz; +}; + #endif /* _UAPI_LINUX_ELF_H */ -- 2.1.4