rust: Add rust_ffi_static vendor ramdisk Support

Similar to our vendor support, this adds support for linking rust static
libraries to vendor ramdisk cc modules.

A bug fix is also included where a restriction against setting rust_ffi
vendor-specific was not being enforced.

Bug: 179397942
Test: Example modules link, Soong tests pass.
Change-Id: I737cdf0c2f49ab349bcea2a0429e6298ebc1313e
diff --git a/rust/image_test.go b/rust/image_test.go
index fd71962..1515aa2 100644
--- a/rust/image_test.go
+++ b/rust/image_test.go
@@ -21,7 +21,7 @@
 	"android/soong/cc"
 )
 
-// Test that cc_binaries can link against rust_ffi_static libraries.
+// Test that cc modules can link against vendor_available rust_ffi_static libraries.
 func TestVendorLinkage(t *testing.T) {
 	ctx := testRust(t, `
 			cc_binary {
@@ -44,9 +44,33 @@
 	}
 }
 
+// Test that cc modules can link against vendor_ramdisk_available rust_ffi_static libraries.
+func TestVendorRamdiskLinkage(t *testing.T) {
+	ctx := testRust(t, `
+			cc_library_static {
+				name: "libcc_vendor_ramdisk",
+				static_libs: ["libfoo_vendor_ramdisk"],
+				system_shared_libs: [],
+				vendor_ramdisk_available: true,
+			}
+			rust_ffi_static {
+				name: "libfoo_vendor_ramdisk",
+				crate_name: "foo",
+				srcs: ["foo.rs"],
+				vendor_ramdisk_available: true,
+			}
+		`)
+
+	vendorRamdiskLibrary := ctx.ModuleForTests("libcc_vendor_ramdisk", "android_vendor_ramdisk_arm64_armv8-a_static").Module().(*cc.Module)
+
+	if !android.InList("libfoo_vendor_ramdisk.vendor_ramdisk", vendorRamdiskLibrary.Properties.AndroidMkStaticLibs) {
+		t.Errorf("libcc_vendor_ramdisk should have a dependency on libfoo_vendor_ramdisk")
+	}
+}
+
 // Test that shared libraries cannot be made vendor available until proper support is added.
 func TestForbiddenVendorLinkage(t *testing.T) {
-	testRustError(t, "can only be set for rust_ffi_static modules", `
+	testRustError(t, "cannot be set for rust_ffi or rust_ffi_shared modules.", `
 		rust_ffi_shared {
 			name: "libfoo_vendor",
 			crate_name: "foo",
@@ -54,6 +78,14 @@
 			vendor_available: true,
 		}
 	`)
+	testRustError(t, "cannot be set for rust_ffi or rust_ffi_shared modules.", `
+		rust_ffi_shared {
+			name: "libfoo_vendor",
+			crate_name: "foo",
+			srcs: ["foo.rs"],
+			vendor_ramdisk_available: true,
+		}
+	`)
 	testRustError(t, "Rust vendor specific modules are currently only supported for rust_ffi_static modules.", `
 		rust_ffi {
 			name: "libfoo_vendor",
@@ -70,4 +102,13 @@
 			vendor: true,
 		}
 	`)
+	testRustError(t, "Rust vendor specific modules are currently only supported for rust_ffi_static modules.", `
+		rust_binary {
+			name: "foo_vendor",
+			crate_name: "foo",
+			srcs: ["foo.rs"],
+			vendor: true,
+		}
+	`)
+
 }