[PATCH 1/2] arm64: Add seccomp support
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2014-02-18 15:39:06
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On Fri, Feb 07, 2014 at 10:11:31AM +0000, AKASHI Takahiro wrote:
quoted hunk ↗ jump to hunk
--- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c@@ -26,6 +26,7 @@ #include <linux/smp.h> #include <linux/ptrace.h> #include <linux/user.h> +#include <linux/seccomp.h> #include <linux/security.h> #include <linux/init.h> #include <linux/signal.h>@@ -1064,6 +1065,10 @@ asmlinkage int syscall_trace(int dir, struct pt_regs *regs) { unsigned long saved_reg; + if (!dir && secure_computing((int)regs->syscallno)) + /* seccomp failures shouldn't expose any additional code. */ + return -1;
That's only restricted to the arm64 code but could we use a more meaningful error number? -- Catalin