Imported Upstream version 16.04

[deb_dpdk.git] / lib / librte_eal / common / eal_common_errno.c

diff --git a/lib/librte_eal/common/eal_common_errno.c b/lib/librte_eal/common/eal_common_errno.c
new file mode 100644 (file)
index 0000000..de48d8e
--- /dev/null
+++ b/lib/librte_eal/common/eal_common_errno.c
@@ -0,0 +1,72 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#include <rte_per_lcore.h>
+#include <rte_errno.h>
+#include <rte_string_fns.h>
+
+RTE_DEFINE_PER_LCORE(int, _rte_errno);
+
+const char *
+rte_strerror(int errnum)
+{
+#define RETVAL_SZ 256
+       static RTE_DEFINE_PER_LCORE(char[RETVAL_SZ], retval);
+
+       /* since some implementations of strerror_r throw an error
+        * themselves if errnum is too big, we handle that case here */
+       if (errnum > RTE_MAX_ERRNO)
+               snprintf(RTE_PER_LCORE(retval), RETVAL_SZ,
+#ifdef RTE_EXEC_ENV_BSDAPP
+                               "Unknown error: %d", errnum);
+#else
+                               "Unknown error %d", errnum);
+#endif
+       else
+               switch (errnum){
+               case E_RTE_SECONDARY:
+                       return "Invalid call in secondary process";
+               case E_RTE_NO_CONFIG:
+                       return "Missing rte_config structure";
+               default:
+                       strerror_r(errnum, RTE_PER_LCORE(retval), RETVAL_SZ);
+               }
+
+       return RTE_PER_LCORE(retval);
+}