From: takahiro.akashi@linaro.org (AKASHI Takahiro)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 0/3] arm64: Add seccomp support
Date: Tue, 22 Jul 2014 18:14:56 +0900 [thread overview]
Message-ID: <1406020499-5537-1-git-send-email-takahiro.akashi@linaro.org> (raw)
(Please apply this patch after my audit patch in order to avoid some
conflict on arm64/Kconfig.)
This patch enables secure computing (system call filtering) on arm64.
System calls can be allowed or denied by loaded bpf-style rules.
Architecture specific part is to run secure_computing() on syscall entry
and check the result. See [3/3]
Prerequisites are:
* "arm64: Add audit support" patch
This code is tested on ARMv8 fast model using
* libseccomp v2.1.1 with modifications for arm64 and verified by its "live"
tests, 20, 21 and 24.
* modified version of Kees' seccomp test for 'changing/skipping a syscall'
behavior
Changes v4 -> v5:
* rebased to v3.16-rc
* add patch [1/3] to allow ptrace to change a system call
(please note that this patch should be applied even without seccomp.)
Changes v3 -> v4:
* removed the following patch and moved it to "arm64: prerequisites for
audit and ftrace" patchset since it is required for audit and ftrace in
case of !COMPAT, too.
"arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h"
Changes v2 -> v3:
* removed unnecessary 'type cast' operations [2/3]
* check for a return value (-1) of secure_computing() explicitly [2/3]
* aligned with the patch, "arm64: split syscall_trace() into separate
functions for enter/exit" [2/3]
* changed default of CONFIG_SECCOMP to n [2/3]
Changes v1 -> v2:
* added generic seccomp.h for arm64 to utilize it [1,2/3]
* changed syscall_trace() to return more meaningful value (-EPERM)
on seccomp failure case [2/3]
* aligned with the change in "arm64: make a single hook to syscall_trace()
for all syscall features" v2 [2/3]
* removed is_compat_task() definition from compat.h [3/3]
AKASHI Takahiro (3):
arm64: ptrace: reload a syscall number after ptrace operations
asm-generic: Add generic seccomp.h for secure computing mode 1
arm64: Add seccomp support
arch/arm64/Kconfig | 14 ++++++++++++++
arch/arm64/include/asm/seccomp.h | 25 +++++++++++++++++++++++++
arch/arm64/include/asm/unistd.h | 3 +++
arch/arm64/kernel/entry.S | 2 ++
arch/arm64/kernel/ptrace.c | 18 ++++++++++++++++++
include/asm-generic/seccomp.h | 28 ++++++++++++++++++++++++++++
6 files changed, 90 insertions(+)
create mode 100644 arch/arm64/include/asm/seccomp.h
create mode 100644 include/asm-generic/seccomp.h
--
1.7.9.5
next reply other threads:[~2014-07-22 9:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-22 9:14 AKASHI Takahiro [this message]
2014-07-22 9:14 ` [PATCH v5 1/3] arm64: ptrace: reload a syscall number after ptrace operations AKASHI Takahiro
2014-07-22 20:15 ` Kees Cook
2014-07-23 7:03 ` AKASHI Takahiro
2014-07-23 8:25 ` Will Deacon
2014-07-23 9:09 ` AKASHI Takahiro
2014-07-23 15:13 ` Kees Cook
2014-07-24 3:54 ` Andy Lutomirski
2014-07-24 5:57 ` AKASHI Takahiro
2014-07-24 15:01 ` Andy Lutomirski
2014-07-25 10:36 ` AKASHI Takahiro
2014-07-25 11:03 ` Will Deacon
2014-07-29 6:49 ` AKASHI Takahiro
2014-07-29 13:26 ` Will Deacon
2014-07-22 9:14 ` [PATCH v5 2/3] asm-generic: Add generic seccomp.h for secure computing mode 1 AKASHI Takahiro
2014-07-24 3:40 ` Andy Lutomirski
2014-07-24 4:41 ` Kees Cook
2014-07-24 5:17 ` AKASHI Takahiro
2014-07-24 14:57 ` Andy Lutomirski
2014-07-25 8:52 ` AKASHI Takahiro
2014-07-22 9:14 ` [PATCH v5 3/3] arm64: Add seccomp support AKASHI Takahiro
2014-07-24 3:52 ` Andy Lutomirski
2014-07-24 5:40 ` AKASHI Takahiro
2014-07-24 15:00 ` Andy Lutomirski
2014-07-24 15:16 ` Catalin Marinas
2014-07-25 9:37 ` AKASHI Takahiro
2014-08-05 15:08 ` Kees Cook
2014-08-08 7:35 ` AKASHI Takahiro
2014-08-11 9:24 ` Will Deacon
2014-08-12 6:57 ` AKASHI Takahiro
2014-08-12 9:40 ` Will Deacon
2014-08-12 11:17 ` AKASHI Takahiro
2014-08-15 14:33 ` Will Deacon
2014-07-22 20:16 ` [PATCH v5 0/3] " Kees Cook
2014-07-23 7:09 ` AKASHI Takahiro
2014-07-23 15:36 ` Kees Cook
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