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-rw-r--r--arch/arm64/Kconfig1
-rw-r--r--arch/arm64/kernel/signal32.c45
2 files changed, 1 insertions, 45 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 24dce47..1f27c58 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -210,6 +210,7 @@ config COMPAT
select COMPAT_BINFMT_ELF
select HAVE_UID16
select OLD_SIGSUSPEND3
+ select COMPAT_OLD_SIGACTION
help
This option enables support for a 32-bit EL0 running under a 64-bit
kernel at EL1. AArch32-specific components such as system calls,
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
index 892b9df..92ada01 100644
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -28,13 +28,6 @@
#include <asm/uaccess.h>
#include <asm/unistd32.h>
-struct compat_old_sigaction {
- compat_uptr_t sa_handler;
- compat_old_sigset_t sa_mask;
- compat_ulong_t sa_flags;
- compat_uptr_t sa_restorer;
-};
-
struct compat_sigcontext {
/* We always set these two fields to 0 */
compat_ulong_t trap_no;
@@ -326,44 +319,6 @@ static int compat_restore_vfp_context(struct compat_vfp_sigframe __user *frame)
return err ? -EFAULT : 0;
}
-asmlinkage int compat_sys_sigaction(int sig,
- const struct compat_old_sigaction __user *act,
- struct compat_old_sigaction __user *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
- compat_old_sigset_t mask;
- compat_uptr_t handler, restorer;
-
- if (act) {
- if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
- __get_user(handler, &act->sa_handler) ||
- __get_user(restorer, &act->sa_restorer) ||
- __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
- __get_user(mask, &act->sa_mask))
- return -EFAULT;
-
- new_ka.sa.sa_handler = compat_ptr(handler);
- new_ka.sa.sa_restorer = compat_ptr(restorer);
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
- __put_user(ptr_to_compat(old_ka.sa.sa_handler),
- &oact->sa_handler) ||
- __put_user(ptr_to_compat(old_ka.sa.sa_restorer),
- &oact->sa_restorer) ||
- __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
- __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
- return -EFAULT;
- }
-
- return ret;
-}
-
static int compat_restore_sigframe(struct pt_regs *regs,
struct compat_sigframe __user *sf)
{
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