summaryrefslogtreecommitdiffstats
path: root/arch/arm64/Kconfig
diff options
context:
space:
mode:
authorAKASHI Takahiro <takahiro.akashi@linaro.org>2014-11-28 05:26:39 +0000
committerWill Deacon <will.deacon@arm.com>2014-11-28 10:24:59 +0000
commita1ae65b219416a72c15577bd4c8c11174fffbb8b (patch)
tree653e0ac5fd6ffd3beb5dc78755a9f89602bc5b56 /arch/arm64/Kconfig
parentcc5e9097c9aad6b186a568c534e26746d6bfa483 (diff)
downloadlinux-a1ae65b219416a72c15577bd4c8c11174fffbb8b.tar.bz2
arm64: add seccomp support
secure_computing() is called first in syscall_trace_enter() so that a system call will be aborted quickly without doing succeeding syscall tracing if seccomp rules want to deny that system call. On compat task, syscall numbers for system calls allowed in seccomp mode 1 are different from those on normal tasks, and so _NR_seccomp_xxx_32's need to be redefined. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/Kconfig')
-rw-r--r--arch/arm64/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f5412d628ff6..7c79c6494379 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -38,6 +38,7 @@ config ARM64
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KGDB
+ select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_BPF_JIT
select HAVE_C_RECORDMCOUNT
@@ -455,6 +456,19 @@ config ARCH_HAS_CACHE_LINE_SIZE
source "mm/Kconfig"
+config SECCOMP
+ bool "Enable seccomp to safely compute untrusted bytecode"
+ ---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(PR_SET_SECCOMP), it cannot be disabled
+ and the task is only allowed to execute a few safe syscalls
+ defined by each seccomp mode.
+
config XEN_DOM0
def_bool y
depends on XEN