On 10/08/2014 11:30 PM, Will Deacon wrote:
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 <keesc...@chromium.org>
Signed-off-by: AKASHI Takahiro <takahiro.aka...@linaro.org>
---
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).
I will fix it.
-Takahiro AKASHI
Will
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