ceph/src/seastar/dpdk/app/test/test_errno.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdint.h>
   6 #include <stdio.h>
   7 #include <stdarg.h>
   8 #include <errno.h>
   9 #include <string.h>
  10 #include <rte_per_lcore.h>
  11 #include <rte_errno.h>
  12 #include <rte_string_fns.h>
  13
  14 #include "test.h"
  15
  16 static int
  17 test_errno(void)
  18 {
  19         const char *rte_retval;
  20         const char *libc_retval;
  21 #ifdef RTE_EXEC_ENV_FREEBSD
  22         /* BSD has a colon in the string, unlike linux */
  23         const char unknown_code_result[] = "Unknown error: %d";
  24 #else
  25         const char unknown_code_result[] = "Unknown error %d";
  26 #endif
  27         char expected_libc_retval[sizeof(unknown_code_result)+3];
  28
  29         /* use a small selection of standard errors for testing */
  30         int std_errs[] = {EAGAIN, EBADF, EACCES, EINTR, EINVAL};
  31         /* test ALL registered RTE error codes for overlap */
  32         int rte_errs[] = {E_RTE_SECONDARY, E_RTE_NO_CONFIG};
  33         unsigned i;
  34
  35         rte_errno = 0;
  36         if (rte_errno != 0)
  37                 return -1;
  38         /* check for standard errors we return the same as libc */
  39         for (i = 0; i < sizeof(std_errs)/sizeof(std_errs[0]); i++){
  40                 rte_retval = rte_strerror(std_errs[i]);
  41                 libc_retval = strerror(std_errs[i]);
  42                 printf("rte_strerror: '%s', strerror: '%s'\n",
  43                                 rte_retval, libc_retval);
  44                 if (strcmp(rte_retval, libc_retval) != 0)
  45                         return -1;
  46         }
  47         /* for rte-specific errors ensure we return a different string
  48          * and that the string for libc is for an unknown error
  49          */
  50         for (i = 0; i < sizeof(rte_errs)/sizeof(rte_errs[0]); i++){
  51                 rte_retval = rte_strerror(rte_errs[i]);
  52                 libc_retval = strerror(rte_errs[i]);
  53                 printf("rte_strerror: '%s', strerror: '%s'\n",
  54                                 rte_retval, libc_retval);
  55                 if (strcmp(rte_retval, libc_retval) == 0)
  56                         return -1;
  57                 /* generate appropriate error string for unknown error number
  58                  * and then check that this is what we got back. If not, we have
  59                  * a duplicate error number that conflicts with errno.h */
  60                 snprintf(expected_libc_retval, sizeof(expected_libc_retval),
  61                                 unknown_code_result, rte_errs[i]);
  62                 if ((strcmp(expected_libc_retval, libc_retval) != 0) &&
  63                                 (strcmp("", libc_retval) != 0)){
  64                         printf("Error, duplicate error code %d\n", rte_errs[i]);
  65                         return -1;
  66                 }
  67         }
  68
  69         /* ensure that beyond RTE_MAX_ERRNO, we always get an unknown code */
  70         rte_retval = rte_strerror(RTE_MAX_ERRNO + 1);
  71         libc_retval = strerror(RTE_MAX_ERRNO + 1);
  72         snprintf(expected_libc_retval, sizeof(expected_libc_retval),
  73                         unknown_code_result, RTE_MAX_ERRNO + 1);
  74         printf("rte_strerror: '%s', strerror: '%s'\n",
  75                         rte_retval, libc_retval);
  76         if ((strcmp(rte_retval, libc_retval) != 0) ||
  77                         (strcmp(expected_libc_retval, libc_retval) != 0)){
  78                 if (strcmp("", libc_retval) != 0){
  79                         printf("Failed test for RTE_MAX_ERRNO + 1 value\n");
  80                         return -1;
  81                 }
  82         }
  83
  84         return 0;
  85 }
  86
  87 REGISTER_TEST_COMMAND(errno_autotest, test_errno);