ceph/src/seastar/dpdk/lib/librte_eal/common/eal_common_errno.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdint.h>
  35 #include <stdio.h>
  36 #include <string.h>
  37 #include <stdarg.h>
  38 #include <errno.h>
  39
  40 #include <rte_per_lcore.h>
  41 #include <rte_errno.h>
  42 #include <rte_string_fns.h>
  43
  44 RTE_DEFINE_PER_LCORE(int, _rte_errno);
  45
  46 const char *
  47 rte_strerror(int errnum)
  48 {
  49 #define RETVAL_SZ 256
  50         static RTE_DEFINE_PER_LCORE(char[RETVAL_SZ], retval);
  51
  52         /* since some implementations of strerror_r throw an error
  53          * themselves if errnum is too big, we handle that case here */
  54         if (errnum > RTE_MAX_ERRNO)
  55                 snprintf(RTE_PER_LCORE(retval), RETVAL_SZ,
  56 #ifdef RTE_EXEC_ENV_BSDAPP
  57                                 "Unknown error: %d", errnum);
  58 #else
  59                                 "Unknown error %d", errnum);
  60 #endif
  61         else
  62                 switch (errnum){
  63                 case E_RTE_SECONDARY:
  64                         return "Invalid call in secondary process";
  65                 case E_RTE_NO_CONFIG:
  66                         return "Missing rte_config structure";
  67                 default:
  68                         strerror_r(errnum, RTE_PER_LCORE(retval), RETVAL_SZ);
  69                 }
  70
  71         return RTE_PER_LCORE(retval);
  72 }