1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
5 /* Use XSI-compliant portable version of strerror_r() */
6 #undef _GNU_SOURCE
7
8 #include <stdint.h>
9 #include <stdio.h>
10 #include <string.h>
11 #include <stdarg.h>
12 #include <errno.h>
13
14 #include <rte_per_lcore.h>
15 #include <rte_errno.h>
16 #include <rte_string_fns.h>
17
18 RTE_DEFINE_PER_LCORE(int, _rte_errno);
19
20 const char *
rte_strerror(int errnum)21 rte_strerror(int errnum)
22 {
23 /* BSD puts a colon in the "unknown error" messages, Linux doesn't */
24 #ifdef RTE_EXEC_ENV_FREEBSD
25 static const char *sep = ":";
26 #else
27 static const char *sep = "";
28 #endif
29 #define RETVAL_SZ 256
30 static RTE_DEFINE_PER_LCORE(char[RETVAL_SZ], retval);
31 char *ret = RTE_PER_LCORE(retval);
32
33 /* since some implementations of strerror_r throw an error
34 * themselves if errnum is too big, we handle that case here */
35 if (errnum >= RTE_MAX_ERRNO)
36 snprintf(ret, RETVAL_SZ, "Unknown error%s %d", sep, errnum);
37 else
38 switch (errnum){
39 case E_RTE_SECONDARY:
40 return "Invalid call in secondary process";
41 case E_RTE_NO_CONFIG:
42 return "Missing rte_config structure";
43 default:
44 if (strerror_r(errnum, ret, RETVAL_SZ) != 0)
45 snprintf(ret, RETVAL_SZ, "Unknown error%s %d",
46 sep, errnum);
47 }
48
49 return ret;
50 }
51