wrappers: Add sigaction

examples/mprotect.rs

@@ -22,20 +22,7 @@ fn handle_segfault(sig: i32) {
 }
 
 fn main() {
-    #[cfg(nc_has_sa_restorer)]
-    let sa = nc::sigaction_t {
-        sa_handler: handle_segfault as nc::sighandler_t,
-        sa_flags: nc::SA_RESTART | nc::SA_RESTORER,
-        sa_restorer: nc::restore::get_sa_restorer(),
-        ..nc::sigaction_t::default()
-    };
-    #[cfg(target_arch = "riscv64")]
-    #[cfg(not(nc_has_sa_restorer))]
-    let sa = nc::sigaction_t {
-        sa_handler: handle_segfault as nc::sighandler_t,
-        sa_flags: nc::SA_RESTART,
-        ..nc::sigaction_t::default()
-    };
+    let sa = nc::new_sigaction(handle_segfault);
     let ret = unsafe { nc::rt_sigaction(nc::SIGSEGV, Some(&sa), None) };
     assert!(ret.is_ok());
 

src/wrappers/mod.rs

@@ -35,3 +35,6 @@ mod alarm;
     )
 ))]
 pub use alarm::alarm;
+
+mod sigaction;
+pub use sigaction::new_sigaction;

src/wrappers/sigaction.rs

@@ -0,0 +1,26 @@
+// Copyright (c) 2024 Xu Shaohua <shaohua@biofan.org>. All rights reserved.
+// Use of this source is governed by Apache-2.0 License that can be found
+// in the LICENSE file.
+
+#![allow(clippy::module_name_repetitions)]
+
+use crate::{sigaction_t, sighandler_t, SA_RESTART};
+
+#[cfg(nc_has_sa_restorer)]
+pub fn new_sigaction(handler: fn(i32)) -> sigaction_t {
+    sigaction_t {
+        sa_handler: handler as sighandler_t,
+        sa_flags: SA_RESTART | crate::SA_RESTORER,
+        sa_restorer: crate::restore::get_sa_restorer(),
+        ..sigaction_t::default()
+    }
+}
+
+#[cfg(not(nc_has_sa_restorer))]
+pub fn new_sigaction(handler: fn(i32)) -> sigaction_t {
+    sigaction_t {
+        sa_handler: handler as sighandler_t,
+        sa_flags: SA_RESTART,
+        ..sigaction_t::default()
+    }
+}