sh: seccomp support.

This hooks up the seccomp thread flag and associated callback from the
syscall tracer.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index cb992c3d6b71..0ae541107f3f 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -483,6 +483,23 @@ config CRASH_DUMP
 
           For more details see Documentation/kdump/kdump.txt
 
+config SECCOMP
+        bool "Enable seccomp to safely compute untrusted bytecode"
+        depends on PROC_FS
+        default y
+        help
+          This kernel feature is useful for number crunching applications
+          that may need to compute untrusted bytecode during their
+          execution. By using pipes or other transports made available to
+          the process as file descriptors supporting the read/write
+          syscalls, it's possible to isolate those applications in
+          their own address space using seccomp. Once seccomp is
+          enabled via prctl, it cannot be disabled and the task is only
+          allowed to execute a few safe syscalls defined by each seccomp
+          mode.
+
+          If unsure, say N.
+
 config SMP
         bool "Symmetric multi-processing support"
         depends on SYS_SUPPORTS_SMP