1 files changed, 87 insertions, 0 deletions
diff --git a/src/spdk/dpdk/app/test/test_errno.c b/src/spdk/dpdk/app/test/test_errno.c
new file mode 100644
index 000000000..3ff0456a5
--- /dev/null
+++ b/src/spdk/dpdk/app/test/test_errno.c
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <string.h>
+#include <rte_per_lcore.h>
+#include <rte_errno.h>
+#include <rte_string_fns.h>
+
+#include "test.h"
+
+static int
+test_errno(void)
+{
+	const char *rte_retval;
+	const char *libc_retval;
+#ifdef RTE_EXEC_ENV_FREEBSD
+	/* BSD has a colon in the string, unlike linux */
+	const char unknown_code_result[] = "Unknown error: %d";
+#else
+	const char unknown_code_result[] = "Unknown error %d";
+#endif
+	char expected_libc_retval[sizeof(unknown_code_result)+3];
+
+	/* use a small selection of standard errors for testing */
+	int std_errs[] = {EAGAIN, EBADF, EACCES, EINTR, EINVAL};
+	/* test ALL registered RTE error codes for overlap */
+	int rte_errs[] = {E_RTE_SECONDARY, E_RTE_NO_CONFIG};
+	unsigned i;
+
+	rte_errno = 0;
+	if (rte_errno != 0)
+		return -1;
+	/* check for standard errors we return the same as libc */
+	for (i = 0; i < RTE_DIM(std_errs); i++) {
+		rte_retval = rte_strerror(std_errs[i]);
+		libc_retval = strerror(std_errs[i]);
+		printf("rte_strerror: '%s', strerror: '%s'\n",
+				rte_retval, libc_retval);
+		if (strcmp(rte_retval, libc_retval) != 0)
+			return -1;
+	}
+	/* for rte-specific errors ensure we return a different string
+	 * and that the string for libc is for an unknown error
+	 */
+	for (i = 0; i < RTE_DIM(rte_errs); i++) {
+		rte_retval = rte_strerror(rte_errs[i]);
+		libc_retval = strerror(rte_errs[i]);
+		printf("rte_strerror: '%s', strerror: '%s'\n",
+				rte_retval, libc_retval);
+		if (strcmp(rte_retval, libc_retval) == 0)
+			return -1;
+		/* generate appropriate error string for unknown error number
+		 * and then check that this is what we got back. If not, we have
+		 * a duplicate error number that conflicts with errno.h */
+		snprintf(expected_libc_retval, sizeof(expected_libc_retval),
+				unknown_code_result, rte_errs[i]);
+		if ((strcmp(expected_libc_retval, libc_retval) != 0) &&
+				(strcmp("", libc_retval) != 0)){
+			printf("Error, duplicate error code %d\n", rte_errs[i]);
+			return -1;
+		}
+	}
+
+	/* ensure that beyond RTE_MAX_ERRNO, we always get an unknown code */
+	rte_retval = rte_strerror(RTE_MAX_ERRNO + 1);
+	libc_retval = strerror(RTE_MAX_ERRNO + 1);
+	snprintf(expected_libc_retval, sizeof(expected_libc_retval),
+			unknown_code_result, RTE_MAX_ERRNO + 1);
+	printf("rte_strerror: '%s', strerror: '%s'\n",
+			rte_retval, libc_retval);
+	if ((strcmp(rte_retval, libc_retval) != 0) ||
+			(strcmp(expected_libc_retval, libc_retval) != 0)){
+		if (strcmp("", libc_retval) != 0){
+			printf("Failed test for RTE_MAX_ERRNO + 1 value\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+REGISTER_TEST_COMMAND(errno_autotest, test_errno);