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 < RTE_DIM(std_errs); 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 < RTE_DIM(rte_errs); 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); 88