test_errno.c revision 97f17497
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 <stdarg.h>
37#include <errno.h>
38#include <string.h>
39#include <rte_per_lcore.h>
40#include <rte_errno.h>
41#include <rte_string_fns.h>
42
43#include "test.h"
44
45static int
46test_errno(void)
47{
48	const char *rte_retval;
49	const char *libc_retval;
50#ifdef RTE_EXEC_ENV_BSDAPP
51	/* BSD has a colon in the string, unlike linux */
52	const char unknown_code_result[] = "Unknown error: %d";
53#else
54	const char unknown_code_result[] = "Unknown error %d";
55#endif
56	char expected_libc_retval[sizeof(unknown_code_result)+3];
57
58	/* use a small selection of standard errors for testing */
59	int std_errs[] = {EAGAIN, EBADF, EACCES, EINTR, EINVAL};
60	/* test ALL registered RTE error codes for overlap */
61	int rte_errs[] = {E_RTE_SECONDARY, E_RTE_NO_CONFIG};
62	unsigned i;
63
64	rte_errno = 0;
65	if (rte_errno != 0)
66		return -1;
67	/* check for standard errors we return the same as libc */
68	for (i = 0; i < sizeof(std_errs)/sizeof(std_errs[0]); i++){
69		rte_retval = rte_strerror(std_errs[i]);
70		libc_retval = strerror(std_errs[i]);
71		printf("rte_strerror: '%s', strerror: '%s'\n",
72				rte_retval, libc_retval);
73		if (strcmp(rte_retval, libc_retval) != 0)
74			return -1;
75	}
76	/* for rte-specific errors ensure we return a different string
77	 * and that the string for libc is for an unknown error
78	 */
79	for (i = 0; i < sizeof(rte_errs)/sizeof(rte_errs[0]); i++){
80		rte_retval = rte_strerror(rte_errs[i]);
81		libc_retval = strerror(rte_errs[i]);
82		printf("rte_strerror: '%s', strerror: '%s'\n",
83				rte_retval, libc_retval);
84		if (strcmp(rte_retval, libc_retval) == 0)
85			return -1;
86		/* generate appropriate error string for unknown error number
87		 * and then check that this is what we got back. If not, we have
88		 * a duplicate error number that conflicts with errno.h */
89		snprintf(expected_libc_retval, sizeof(expected_libc_retval),
90				unknown_code_result, rte_errs[i]);
91		if ((strcmp(expected_libc_retval, libc_retval) != 0) &&
92				(strcmp("", libc_retval) != 0)){
93			printf("Error, duplicate error code %d\n", rte_errs[i]);
94			return -1;
95		}
96	}
97
98	/* ensure that beyond RTE_MAX_ERRNO, we always get an unknown code */
99	rte_retval = rte_strerror(RTE_MAX_ERRNO + 1);
100	libc_retval = strerror(RTE_MAX_ERRNO + 1);
101	snprintf(expected_libc_retval, sizeof(expected_libc_retval),
102			unknown_code_result, RTE_MAX_ERRNO + 1);
103	printf("rte_strerror: '%s', strerror: '%s'\n",
104			rte_retval, libc_retval);
105	if ((strcmp(rte_retval, libc_retval) != 0) ||
106			(strcmp(expected_libc_retval, libc_retval) != 0)){
107		if (strcmp("", libc_retval) != 0){
108			printf("Failed test for RTE_MAX_ERRNO + 1 value\n");
109			return -1;
110		}
111	}
112
113	return 0;
114}
115
116static struct test_command errno_cmd = {
117	.command = "errno_autotest",
118	.callback = test_errno,
119};
120REGISTER_TEST_COMMAND(errno_cmd);
121