From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Wed, 8 Oct 2014 15:30:59 +0100 Subject: [PATCH v7 5/6] arm64: add SIGSYS siginfo for compat task In-Reply-To: <1412243176-16192-6-git-send-email-takahiro.akashi@linaro.org> References: <1412243176-16192-1-git-send-email-takahiro.akashi@linaro.org> <1412243176-16192-6-git-send-email-takahiro.akashi@linaro.org> Message-ID: <20141008143059.GS26140@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Oct 02, 2014 at 10:46:15AM +0100, AKASHI Takahiro wrote: > SIGSYS is primarily used in secure computing to notify tracer. > This patch allows signal handler on compat task to get correct information > with SA_SIGINFO specified when this signal is delivered. > > Reviewed-by: Kees Cook > Signed-off-by: AKASHI Takahiro > --- > arch/arm64/include/asm/compat.h | 7 +++++++ > arch/arm64/kernel/signal32.c | 6 ++++++ > 2 files changed, 13 insertions(+) > > diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h > index 253e33b..c877915 100644 > --- a/arch/arm64/include/asm/compat.h > +++ b/arch/arm64/include/asm/compat.h > @@ -205,6 +205,13 @@ typedef struct compat_siginfo { > compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ > int _fd; > } _sigpoll; > + > + /* SIGSYS */ > + struct { > + compat_uptr_t _call_addr; /* calling user insn */ > + int _syscall; /* triggering system call number */ > + unsigned int _arch; /* AUDIT_ARCH_* of syscall */ nit, but compat_uint_t looks better here (I have no idea why I didn't do this for the signed int types, but hey). Will