arch/arm: support seccomp [LWN.net]

From:		Kees Cook <keescook@chromium.org>
To:		linux-kernel@vger.kernel.org
Subject:		[PATCH v4 0/4] arch/arm: support seccomp
Date:		Thu, 8 Nov 2012 12:59:29 -0800
Message-ID:		<1352408373-25047-1-git-send-email-keescook@chromium.org>
Cc:		Russell King <linux@arm.linux.org.uk>, Will Deacon <will.deacon@arm.com>, Geremy Condra <gcondra@google.com>, Catalin Marinas <catalin.marinas@arm.com>, Al Viro <viro@zeniv.linux.org.uk>, Kees Cook <keescook@chromium.org>, Will Drewry <wad@chromium.org>
Archive-link:		Article, Thread

This adds support for seccomp BPF to ARM. When built with the seccomp
improvement patch waiting in linux-next ("seccomp: Make syscall skipping
and nr changes more consistent"), this passes the seccomp regression
test suite: https://github.com/redpig/seccomp

Thanks,

-Kees

---
v4:
 - fixed syscall_get_arch, thanks to Will Deacon.
v3:
 - updates suggested by Russell King:
   - reduced scope of expansion
   - leveraged TIF_SYSCALL_WORK bit mask
   - fixed syscall==-1 short-circuit logic
v2:
 - expanded ptrace_syscall_trace() into both callers and do
   secure_computing() hookup there, as requested by Al Viro.



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