generic sys_sigaction() and compat_sys_sigaction()

conditional on OLD_SIGACTION/COMPAT_OLD_SIGACTION

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 0d53ab4f79c5..e20b8b404ae9 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -299,6 +299,15 @@ struct compat_robust_list_head {
         compat_uptr_t                   list_op_pending;
 };
 
+#ifdef CONFIG_COMPAT_OLD_SIGACTION
+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;
+};
+#endif
+
 struct compat_statfs;
 struct compat_statfs64;
 struct compat_old_linux_dirent;
@@ -383,6 +392,11 @@ int get_compat_sigevent(struct sigevent *event,
                 const struct compat_sigevent __user *u_event);
 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
                                   struct compat_siginfo __user *uinfo);
+#ifdef CONFIG_COMPAT_OLD_SIGACTION
+asmlinkage long compat_sys_sigaction(int sig,
+                                   const struct compat_old_sigaction __user *act,
+                                   struct compat_old_sigaction __user *oact);
+#endif
 
 static inline int compat_timeval_compare(struct compat_timeval *lhs,
                                         struct compat_timeval *rhs)