lib: remove unneeded header includes
[dpdk.git] / lib / eal / common / eal_common_errno.c
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 <stdio.h>
9 #include <string.h>
10
11 #include <rte_per_lcore.h>
12 #include <rte_errno.h>
13
14 #ifdef RTE_EXEC_ENV_WINDOWS
15 #define strerror_r(errnum, buf, buflen) strerror_s(buf, buflen, errnum)
16 #endif
17
18 RTE_DEFINE_PER_LCORE(int, _rte_errno);
19
20 const char *
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 #ifdef RTE_EXEC_ENV_WINDOWS
37                 snprintf(ret, RETVAL_SZ, "Unknown error");
38 #else
39                 snprintf(ret, RETVAL_SZ, "Unknown error%s %d", sep, errnum);
40 #endif
41         else
42                 switch (errnum){
43                 case E_RTE_SECONDARY:
44                         return "Invalid call in secondary process";
45                 case E_RTE_NO_CONFIG:
46                         return "Missing rte_config structure";
47                 default:
48                         if (strerror_r(errnum, ret, RETVAL_SZ) != 0)
49                                 snprintf(ret, RETVAL_SZ, "Unknown error%s %d",
50                                                 sep, errnum);
51                 }
52
53         return ret;
54 }