skip some musl constants

Author: gnzlbg

libc-test/build.rs

@@ -2357,6 +2357,9 @@ fn test_linux(target: &str) {
 
     cfg.skip_struct(move |ty| {
         match ty {
+            // Not available in the current sanitized musl kernel headers:
+            "input_mask" if musl => true,
+
             // FIXME: is this necessary?
             "sockaddr_nl" if musl => true,
 
@@ -2406,6 +2409,18 @@ fn test_linux(target: &str) {
             | "F_SEAL_GROW"
             | "F_SEAL_WRITE" => true,
 
+            // The musl-sanitized kernel headers used in CI
+            // target the Linux kernel 3.x and do not contain the
+            // following constants:
+            //
+            // Require Linux kernel 4.x:
+            | "RENAME_NOREPLACE"
+            | "RENAME_EXCHANGE"
+            | "RENAME_WHITEOUT"
+            // Require Linux kernel 5.x:
+            | "MSG_COPY"
+                => true,
+
             // FIXME: deprecated: not available in any header
             // See: https://github.com/rust-lang/libc/issues/1356
             "ENOATTR" => true,