tests: Handle ENOSYS in qemu on cross-arch emulation

 We may get ENOSYS from qemu userspace emulation not implementing the ioctl.

Signed-off-by: Colin Walters <[email protected]>

.github/workflows/test.yaml

@@ -141,7 +141,7 @@ jobs:
             ./hacking/installdeps.sh
             meson setup build --werror
             meson compile -C build
-            meson test -C build --timeout-multiplier 10
+            env CFS_TEST_ARCH_EMULATION=${{ matrix.arch }} meson test -C build --timeout-multiplier 10
       - name: Upload log
         uses: actions/upload-artifact@v4
         if: always()

tests/test-lcfs.c

@@ -88,7 +88,9 @@ static void test_no_verity(void)
 	int r = lcfs_fd_measure_fsverity(digest, tmpfd);
 	int errsv = errno;
 	assert(r != 0);
-	assert(errsv == ENOVERITY);
+	// We may get ENOSYS from qemu userspace emulation not implementing the ioctl
+	if (getenv("CFS_TEST_ARCH_EMULATION") == NULL)
+		assert(errsv == ENOVERITY);
 	close(tmpfd);
 }