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 22 #ifndef RTE_EXEC_ENV_WINDOWS 23 #ifdef RTE_EXEC_ENV_FREEBSD 24 /* BSD has a colon in the string, unlike linux */ 25 const char unknown_code_result[] = "Unknown error: %d"; 26 #else 27 const char unknown_code_result[] = "Unknown error %d"; 28 #endif 29 char expected_libc_retval[sizeof(unknown_code_result) + 3]; 30 #else 31 /* Windows doesn't return error number for error greater than MAX_errno*/ 32 static const char expected_libc_retval[] = "Unknown error"; 33 #endif 34 35 /* use a small selection of standard errors for testing */ 36 int std_errs[] = {EAGAIN, EBADF, EACCES, EINTR, EINVAL}; 37 /* test ALL registered RTE error codes for overlap */ 38 int rte_errs[] = {E_RTE_SECONDARY, E_RTE_NO_CONFIG}; 39 unsigned i; 40 41 rte_errno = 0; 42 if (rte_errno != 0) 43 return -1; 44 /* check for standard errors we return the same as libc */ 45 for (i = 0; i < RTE_DIM(std_errs); i++) { 46 rte_retval = rte_strerror(std_errs[i]); 47 libc_retval = strerror(std_errs[i]); 48 printf("rte_strerror: '%s', strerror: '%s'\n", 49 rte_retval, libc_retval); 50 if (strcmp(rte_retval, libc_retval) != 0) 51 return -1; 52 } 53 /* for rte-specific errors ensure we return a different string 54 * and that the string for libc is for an unknown error 55 */ 56 for (i = 0; i < RTE_DIM(rte_errs); i++) { 57 rte_retval = rte_strerror(rte_errs[i]); 58 libc_retval = strerror(rte_errs[i]); 59 printf("rte_strerror: '%s', strerror: '%s'\n", 60 rte_retval, libc_retval); 61 if (strcmp(rte_retval, libc_retval) == 0) 62 return -1; 63 #ifndef RTE_EXEC_ENV_WINDOWS 64 /* generate appropriate error string for unknown error number 65 * and then check that this is what we got back. If not, we have 66 * a duplicate error number that conflicts with errno.h */ 67 snprintf(expected_libc_retval, sizeof(expected_libc_retval), 68 unknown_code_result, rte_errs[i]); 69 #endif 70 if ((strcmp(expected_libc_retval, libc_retval) != 0) && 71 (strcmp("", libc_retval) != 0)){ 72 printf("Error, duplicate error code %d\n", rte_errs[i]); 73 return -1; 74 } 75 } 76 77 /* ensure that beyond RTE_MAX_ERRNO, we always get an unknown code */ 78 rte_retval = rte_strerror(RTE_MAX_ERRNO + 1); 79 libc_retval = strerror(RTE_MAX_ERRNO + 1); 80 #ifndef RTE_EXEC_ENV_WINDOWS 81 snprintf(expected_libc_retval, sizeof(expected_libc_retval), 82 unknown_code_result, RTE_MAX_ERRNO + 1); 83 #endif 84 printf("rte_strerror: '%s', strerror: '%s'\n", 85 rte_retval, libc_retval); 86 if ((strcmp(rte_retval, libc_retval) != 0) || 87 (strcmp(expected_libc_retval, libc_retval) != 0)){ 88 if (strcmp("", libc_retval) != 0){ 89 printf("Failed test for RTE_MAX_ERRNO + 1 value\n"); 90 return -1; 91 } 92 } 93 94 return 0; 95 } 96 97 REGISTER_TEST_COMMAND(errno_autotest, test_errno); 98