Move todo function stub reorganization. (#116)

 - Move `dl*` stubs into their own module.
 - Move more functions that can be wrappers around `rustix` to their
   section in todo.rs
 - Move `initgroups` to the NSS category.
 - Move `if_*` functions to the NSS categorry.

Author: sunfishcode

c-scape/src/process_.rs

@@ -264,24 +264,6 @@ unsafe extern "C" fn dlsym(handle: *mut c_void, symbol: *const c_char) -> *mut c
     }
 }
 
-#[no_mangle]
-unsafe extern "C" fn dlclose() {
-    //libc!(libc::dlclose());
-    unimplemented!("dlclose")
-}
-
-#[no_mangle]
-unsafe extern "C" fn dlerror() {
-    //libc!(libc::dlerror());
-    unimplemented!("dlerror")
-}
-
-#[no_mangle]
-unsafe extern "C" fn dlopen() {
-    //libc!(libc::dlopen());
-    unimplemented!("dlopen")
-}
-
 #[no_mangle]
 unsafe extern "C" fn sched_yield() -> c_int {
     libc!(libc::sched_yield());

c-scape/src/todo.rs

@@ -3,6 +3,7 @@
 
 mod aio;
 mod cat;
+mod dl;
 mod fenv;
 mod jmp;
 mod locale;
@@ -52,6 +53,26 @@ unsafe extern "C" fn eaccess() {
 unsafe extern "C" fn timerfd_gettime() {
     todo!("timerfd_gettime")
 }
+#[no_mangle]
+unsafe extern "C" fn preadv2() {
+    todo!("preadv2")
+}
+#[no_mangle]
+unsafe extern "C" fn pwritev2() {
+    todo!("pwritev2")
+}
+#[no_mangle]
+unsafe extern "C" fn preadv64v2() {
+    todo!("preadv64v2")
+}
+#[no_mangle]
+unsafe extern "C" fn pwritev64v2() {
+    todo!("pwritev64v2")
+}
+#[no_mangle]
+unsafe extern "C" fn reboot() {
+    todo!("reboot")
+}
 
 // `_chk` versions of functions we have implemented, so we just need to add
 // wrappers with extra checks.
@@ -237,10 +258,6 @@ unsafe extern "C" fn gethostbyname() {
     todo!("gethostbyname")
 }
 #[no_mangle]
-unsafe extern "C" fn if_indextoname() {
-    todo!("if_indextoname")
-}
-#[no_mangle]
 unsafe extern "C" fn getgrent_r() {
     todo!("getgrent_r")
 }
@@ -256,6 +273,26 @@ unsafe extern "C" fn getspent_r() {
 unsafe extern "C" fn gethostbyname_r() {
     todo!("gethostbyname_r")
 }
+#[no_mangle]
+unsafe extern "C" fn initgroups() {
+    todo!("initgroups")
+}
+#[no_mangle]
+unsafe extern "C" fn if_indextoname() {
+    todo!("if_indextoname")
+}
+#[no_mangle]
+unsafe extern "C" fn if_nametoindex() {
+    todo!("if_nametoindex")
+}
+#[no_mangle]
+unsafe extern "C" fn if_nameindex() {
+    todo!("if_nameindex")
+}
+#[no_mangle]
+unsafe extern "C" fn if_freenameindex() {
+    todo!("if_freenameindex")
+}
 
 // Additional functions.
 
@@ -280,10 +317,6 @@ unsafe extern "C" fn setfsgid() {
     todo!("setfsgid")
 }
 #[no_mangle]
-unsafe extern "C" fn initgroups() {
-    todo!("initgroups")
-}
-#[no_mangle]
 unsafe extern "C" fn strftime() {
     todo!("strftime")
 }
@@ -320,10 +353,6 @@ unsafe extern "C" fn getresuid() {
     todo!("getresuid")
 }
 #[no_mangle]
-unsafe extern "C" fn if_nametoindex() {
-    todo!("if_nametoindex")
-}
-#[no_mangle]
 unsafe extern "C" fn ppoll() {
     todo!("ppoll")
 }
@@ -1069,22 +1098,6 @@ unsafe extern "C" fn wait4() {
     todo!("wait4")
 }
 #[no_mangle]
-unsafe extern "C" fn preadv2() {
-    todo!("preadv2")
-}
-#[no_mangle]
-unsafe extern "C" fn pwritev2() {
-    todo!("pwritev2")
-}
-#[no_mangle]
-unsafe extern "C" fn preadv64v2() {
-    todo!("preadv64v2")
-}
-#[no_mangle]
-unsafe extern "C" fn pwritev64v2() {
-    todo!("pwritev64v2")
-}
-#[no_mangle]
 unsafe extern "C" fn profil() {
     todo!("profil")
 }
@@ -1097,10 +1110,6 @@ unsafe extern "C" fn readahead() {
     todo!("readahead")
 }
 #[no_mangle]
-unsafe extern "C" fn reboot() {
-    todo!("reboot")
-}
-#[no_mangle]
 unsafe extern "C" fn remap_file_pages() {
     todo!("remap_file_pages")
 }
@@ -1133,18 +1142,6 @@ unsafe extern "C" fn __open_2() {
     todo!("__open_2")
 }
 #[no_mangle]
-unsafe extern "C" fn if_nameindex() {
-    todo!("if_nameindex")
-}
-#[no_mangle]
-unsafe extern "C" fn if_freenameindex() {
-    todo!("if_freenameindex")
-}
-#[no_mangle]
-unsafe extern "C" fn dladdr() {
-    todo!("dladdr")
-}
-#[no_mangle]
 unsafe extern "C" fn wordexp() {
     todo!("wordexp")
 }

c-scape/src/todo/dl.rs

@@ -0,0 +1,16 @@
+#[no_mangle]
+unsafe extern "C" fn dladdr() {
+    todo!("dladdr")
+}
+#[no_mangle]
+unsafe extern "C" fn dlclose() {
+    todo!("dlclose")
+}
+#[no_mangle]
+unsafe extern "C" fn dlerror() {
+    todo!("dlerror")
+}
+#[no_mangle]
+unsafe extern "C" fn dlopen() {
+    todo!("dlopen")
+}