libkrun: remove redundant "net" checks

We had cfg! checks for net on methods that are only present if net is
enabled, so let's remove them.

Suggested-by: Matej Hrica <[email protected]>
Signed-off-by: Sergio Lopez <[email protected]>

Author: slp

src/libkrun/src/lib.rs

@@ -768,10 +768,6 @@ pub unsafe extern "C" fn krun_add_net_unixstream(
     features: u32,
     flags: u32,
 ) -> i32 {
-    if cfg!(not(feature = "net")) {
-        return -libc::ENOTSUP;
-    }
-
     let path = if !c_path.is_null() {
         match CStr::from_ptr(c_path).to_str() {
             Ok(path) => Some(PathBuf::from(path)),
@@ -828,10 +824,6 @@ pub unsafe extern "C" fn krun_add_net_unixgram(
     features: u32,
     flags: u32,
 ) -> i32 {
-    if cfg!(not(feature = "net")) {
-        return -libc::ENOTSUP;
-    }
-
     let path = if !c_path.is_null() {
         match CStr::from_ptr(c_path).to_str() {
             Ok(path) => Some(PathBuf::from(path)),
@@ -888,10 +880,6 @@ pub unsafe extern "C" fn krun_add_net_tap(
     features: u32,
     flags: u32,
 ) -> i32 {
-    if cfg!(not(feature = "net")) {
-        return -libc::ENOTSUP;
-    }
-
     let tap_name = match CStr::from_ptr(c_tap_name).to_str() {
         Ok(tap_name) => tap_name.to_string(),
         Err(e) => {
@@ -935,6 +923,19 @@ pub unsafe extern "C" fn krun_add_net_tap(
     KRUN_SUCCESS
 }
 
+#[allow(clippy::missing_safety_doc)]
+#[no_mangle]
+#[cfg(all(not(target_os = "linux"), feature = "net"))]
+pub unsafe extern "C" fn krun_add_net_tap(
+    _ctx_id: u32,
+    _c_tap_name: *const c_char,
+    _c_mac: *const u8,
+    _features: u32,
+    _flags: u32,
+) -> i32 {
+    -libc::EINVAL
+}
+
 #[allow(clippy::missing_safety_doc)]
 #[no_mangle]
 #[cfg(feature = "net")]
@@ -943,10 +944,6 @@ pub unsafe extern "C" fn krun_set_passt_fd(ctx_id: u32, fd: c_int) -> i32 {
         return -libc::EINVAL;
     }
 
-    if cfg!(not(feature = "net")) {
-        return -libc::ENOTSUP;
-    }
-
     match CTX_MAP.lock().unwrap().entry(ctx_id) {
         Entry::Occupied(mut ctx_cfg) => {
             let cfg = ctx_cfg.get_mut();
@@ -971,10 +968,6 @@ pub unsafe extern "C" fn krun_set_passt_fd(ctx_id: u32, fd: c_int) -> i32 {
 #[no_mangle]
 #[cfg(feature = "net")]
 pub unsafe extern "C" fn krun_set_gvproxy_path(ctx_id: u32, c_path: *const c_char) -> i32 {
-    if cfg!(not(feature = "net")) {
-        return -libc::ENOTSUP;
-    }
-
     let path_str = match CStr::from_ptr(c_path).to_str() {
         Ok(path) => path,
         Err(e) => {