Add unit tests for possible_cpus_array_len

[userspace-rcu.git] / tests / unit / get_cpu_mask_from_sysfs.c

diff --git a/tests/unit/get_cpu_mask_from_sysfs.c b/tests/unit/get_cpu_mask_from_sysfs.c
new file mode 100644 (file)
index 0000000..91f2ebf
--- /dev/null
+++ b/tests/unit/get_cpu_mask_from_sysfs.c
@@ -0,0 +1,30 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Copyright (C) 2022 Michael Jeanson <mjeanson@efficios.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "compat-smp.h"
+
+int main(int argc, char *argv[])
+{
+       int ret;
+       char buf[URCU_CPUMASK_SIZE];
+
+       if( argc < 2 ) {
+               fprintf(stderr, "Missing argument.\n");
+               return EXIT_FAILURE;
+       }
+
+       ret = get_cpu_mask_from_sysfs((char *) &buf, URCU_CPUMASK_SIZE, argv[1]);
+
+       printf("%s", buf);
+
+       if (ret >= 0)
+               return EXIT_SUCCESS;
+       else
+               return EXIT_FAILURE;
+}