DAOS-16371 il: do not return unsupported for fputs if ioil is loaded

Features: dfuse_unit
Required-githooks: true

Signed-off-by: Mohamad Chaarawi <mohamad.chaarawi@intel.com>

src/client/dfuse/il/int_posix.c

@@ -2522,15 +2522,9 @@ dfuse_fputs(char *__str, FILE *stream)
 	if (drop_reference_if_disabled(entry))
 		goto do_real_fn;
 
-	D_ERROR("Unsupported function\n");
-
-	entry->fd_err = ENOTSUP;
-
+	DISABLE_STREAM(entry, stream);
 	vector_decref(&fd_table, entry);
 
-	errno = ENOTSUP;
-	return EOF;
-
 do_real_fn:
 	return __real_fputs(__str, stream);
 }
@@ -2553,13 +2547,9 @@ dfuse_fputws(const wchar_t *ws, FILE *stream)
 	if (drop_reference_if_disabled(entry))
 		goto do_real_fn;
 
-	entry->fd_err = ENOTSUP;
-
+	DISABLE_STREAM(entry, stream);
 	vector_decref(&fd_table, entry);
 
-	errno = ENOTSUP;
-	return -1;
-
 do_real_fn:
 	return __real_fputws(ws, stream);
 }

src/tests/suite/dfuse_test.c

@@ -327,6 +327,15 @@ do_stream(void **state)
 	rc = unlinkat(root, "stream_file", 0);
 	assert_return_code(rc, errno);
 
+	fd = openat(root, "stream_file2", O_RDWR | O_CREAT | O_EXCL, S_IWUSR | S_IRUSR);
+	assert_return_code(fd, errno);
+	stream = fdopen(fd, "w+");
+	assert_non_null(stream);
+
+	rc = fputs("Hello World!\n", stream);
+	assert_true(rc >= 0);
+	fclose(stream);
+
 	rc = close(root);
 	assert_return_code(rc, errno);
 }