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authorAKASHI Takahiro <takahiro.akashi@linaro.org>2014-11-28 08:26:38 +0300
committerWill Deacon <will.deacon@arm.com>2014-11-28 13:24:59 +0300
commitcc5e9097c9aad6b186a568c534e26746d6bfa483 (patch)
tree2136fca62197665c6740bfac8f35a4d4841efb9c /arch/arm64/kernel/signal32.c
parente185fab7e13087cbd1f7e281d2698f07dbcdd44e (diff)
downloadlinux-cc5e9097c9aad6b186a568c534e26746d6bfa483.tar.xz
arm64: add SIGSYS siginfo for compat task
SIGSYS is primarily used in secure computing to notify tracer of syscall events. 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 <keescook@chromium.org> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/signal32.c')
-rw-r--r--arch/arm64/kernel/signal32.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
index 1b9ad02837cf..5a1ba6e80d4e 100644
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -186,6 +186,12 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
err |= __put_user(from->si_uid, &to->si_uid);
err |= __put_user((compat_uptr_t)(unsigned long)from->si_ptr, &to->si_ptr);
break;
+ case __SI_SYS:
+ err |= __put_user((compat_uptr_t)(unsigned long)
+ from->si_call_addr, &to->si_call_addr);
+ err |= __put_user(from->si_syscall, &to->si_syscall);
+ err |= __put_user(from->si_arch, &to->si_arch);
+ break;
default: /* this is just in case for now ... */
err |= __put_user(from->si_pid, &to->si_pid);
err |= __put_user(from->si_uid, &to->si_uid);