static int ne_set_kernel_param()

in drivers/virt/nitro_enclaves/ne_misc_dev.c [515:552]

• 26 lines of code
• 5 McCabe index (conditional complexity)

static int ne_set_kernel_param(const char *val, const struct kernel_param *kp)
{
	char error_val[] = "";
	int rc = -EINVAL;

	if (!capable(CAP_SYS_ADMIN))
		return -EPERM;

	if (ne_check_enclaves_created()) {
		pr_err("%s: The CPU pool is used by enclave(s)\n", ne_misc_dev.name);

		return -EPERM;
	}

	ne_teardown_cpu_pool();

	rc = ne_setup_cpu_pool(val);
	if (rc < 0) {
		pr_err("%s: Error in setup CPU pool [rc=%d]\n", ne_misc_dev.name, rc);

		param_set_copystring(error_val, kp);

		return rc;
	}

	rc = param_set_copystring(val, kp);
	if (rc < 0) {
		pr_err("%s: Error in param set copystring [rc=%d]\n", ne_misc_dev.name, rc);

		ne_teardown_cpu_pool();

		param_set_copystring(error_val, kp);

		return rc;
	}

	return 0;
}