This patch implements the seccomp BPF_S_ANC_SECCOMP_LD_W instruction in ARM JIT.
Signed-off-by: Xi Wang <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Will Drewry <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Russell King <[email protected]> Cc: David Laight <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Nicolas Schichan <[email protected]> --- arch/arm/net/bpf_jit_32.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index 073b085..9bfce464 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -19,6 +19,7 @@ #include <linux/if_vlan.h> #include <asm/cacheflush.h> #include <asm/hwcap.h> +#include <asm/syscall.h> #include "bpf_jit_32.h" @@ -845,6 +846,19 @@ b_epilogue: off = offsetof(struct sk_buff, queue_mapping); emit(ARM_LDRH_I(r_A, r_skb, off), ctx); break; +#ifdef CONFIG_SECCOMP_FILTER + case BPF_S_ANC_SECCOMP_LD_W: + if (k == offsetof(struct seccomp_data, arch)) { + emit_mov_i(r_A, AUDIT_ARCH_ARM, ctx); + break; + } + ctx->seen |= SEEN_CALL; + emit_mov_i(ARM_R3, (u32)seccomp_bpf_load, ctx); + emit_mov_i(ARM_R0, k, ctx); + emit_blx_r(ARM_R3, ctx); + emit(ARM_MOV_R(r_A, ARM_R0), ctx); + break; +#endif default: return -1; } -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
