Expose si_addr on siginfo_t. Refs #716

Author: alex

src/unix/notbsd/linux/other/mod.rs

@@ -1,5 +1,92 @@
 pub type __priority_which_t = ::c_uint;
 
+#[repr(C)]
+#[derive(Copy, Clone)]
+struct addr_bnd_t {
+    lower: *mut ::c_void,
+    upper: *mut ::c_void,
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+union sigfault_t_anonymous_union {
+    addr_bnd: addr_bnd_t,
+    pkey: u32,
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+struct sigfault_t {
+    addr: *mut ::c_void,
+    #[cfg(target_arch = "sparc")]
+    trapno: ::c_int,
+    addr_lsb: ::c_short,
+    anonymous_union: sigfault_t_anonymous_union,
+}
+
+#[repr(C, packed)]
+#[derive(Copy, Clone)]
+union sifields_t {
+    _pad: [::c_int; 29],
+    sigfault: sigfault_t,
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct siginfo_t {
+    pub si_signo: ::c_int,
+    pub si_errno: ::c_int,
+    pub si_code: ::c_int,
+    sifields: sifields_t,
+    #[cfg(target_arch = "x86_64")]
+    _align: [u64; 0],
+    #[cfg(not(target_arch = "x86_64"))]
+    _align: [usize; 0],
+}
+
+impl ::fmt::Debug for sigfault_t_anonymous_union {
+    fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+        // TODO: no idea how to tell which of the members is used
+        f.debug_struct("sigfault_t_anonymous_union")
+            .finish()
+    }
+}
+
+impl ::fmt::Debug for sigfault_t {
+    fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+        // TODO: include trapno on Sparc
+        f.debug_struct("sigfault_t")
+            .field("addr", &self.addr)
+            .field("addr_lsb", &self.addr_lsb)
+            .field("anonymous_union", &self.anonymous_union)
+            .finish()
+    }
+}
+
+impl ::fmt::Debug for sifields_t {
+    fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+        // No way to print anything more detailed without the discriminant from siginfo_t
+        f.debug_struct("sifields_t").finish()
+    }
+}
+
+impl siginfo_t {
+    pub unsafe fn si_addr(&self) -> *mut ::c_void {
+        self.sifields.sigfault.addr
+    }
+}
+
+impl ::fmt::Debug for siginfo_t {
+    fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+        // TODO: include fields from sifields
+        f.debug_struct("siginfo_t")
+            .field("si_signo", &self.si_signo)
+            .field("si_errno", &self.si_errno)
+            .field("si_code", &self.si_code)
+            .finish()
+    }
+}
+
 s! {
     pub struct aiocb {
         pub aio_fildes: ::c_int,
@@ -44,17 +131,6 @@ s! {
         pub ss_size: ::size_t
     }
 
-    pub struct siginfo_t {
-        pub si_signo: ::c_int,
-        pub si_errno: ::c_int,
-        pub si_code: ::c_int,
-        pub _pad: [::c_int; 29],
-        #[cfg(target_arch = "x86_64")]
-        _align: [u64; 0],
-        #[cfg(not(target_arch = "x86_64"))]
-        _align: [usize; 0],
-    }
-
     pub struct glob64_t {
         pub gl_pathc: ::size_t,
         pub gl_pathv: *mut *mut ::c_char,