1 /**
2 * @file
3 * Error Management module
4 *
5 */
6
7 /*
8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without modification,
12 * are permitted provided that the following conditions are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright notice,
15 * this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright notice,
17 * this list of conditions and the following disclaimer in the documentation
18 * and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
31 * OF SUCH DAMAGE.
32 *
33 * This file is part of the lwIP TCP/IP stack.
34 *
35 * Author: Adam Dunkels <adam@sics.se>
36 *
37 */
38
39 #include "lwip/err.h"
40 #include "lwip/def.h"
41 #include "lwip/sys.h"
42
43 #include "lwip/errno.h"
44
45 #if !NO_SYS
46 /** Table to quickly map an lwIP error (err_t) to a socket error
47 * by using -err as an index */
48 static const int err_to_errno_table[] = {
49 0, /* ERR_OK 0 No error, everything OK. */
50 ENOMEM, /* ERR_MEM -1 Out of memory error. */
51 ENOBUFS, /* ERR_BUF -2 Buffer error. */
52 EWOULDBLOCK, /* ERR_TIMEOUT -3 Timeout */
53 EHOSTUNREACH, /* ERR_RTE -4 Routing problem. */
54 EINPROGRESS, /* ERR_INPROGRESS -5 Operation in progress */
55 EINVAL, /* ERR_VAL -6 Illegal value. */
56 EWOULDBLOCK, /* ERR_WOULDBLOCK -7 Operation would block. */
57 EADDRINUSE, /* ERR_USE -8 Address in use. */
58 EALREADY, /* ERR_ALREADY -9 Already connecting. */
59 EISCONN, /* ERR_ISCONN -10 Conn already established.*/
60 ENOTCONN, /* ERR_CONN -11 Not connected. */
61 -1, /* ERR_IF -12 Low-level netif error */
62 ECONNABORTED, /* ERR_ABRT -13 Connection aborted. */
63 ECONNRESET, /* ERR_RST -14 Connection reset. */
64 ENOTCONN, /* ERR_CLSD -15 Connection closed. */
65 EIO /* ERR_ARG -16 Illegal argument. */
66 };
67
68 int
err_to_errno(err_t err)69 err_to_errno(err_t err)
70 {
71 if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_to_errno_table))) {
72 return EIO;
73 }
74 return err_to_errno_table[-err];
75 }
76 #endif /* !NO_SYS */
77
78 #ifdef LWIP_DEBUG
79
80 static const char *err_strerr[] = {
81 "Ok.", /* ERR_OK 0 */
82 "Out of memory error.", /* ERR_MEM -1 */
83 "Buffer error.", /* ERR_BUF -2 */
84 "Timeout.", /* ERR_TIMEOUT -3 */
85 "Routing problem.", /* ERR_RTE -4 */
86 "Operation in progress.", /* ERR_INPROGRESS -5 */
87 "Illegal value.", /* ERR_VAL -6 */
88 "Operation would block.", /* ERR_WOULDBLOCK -7 */
89 "Address in use.", /* ERR_USE -8 */
90 "Already connecting.", /* ERR_ALREADY -9 */
91 "Already connected.", /* ERR_ISCONN -10 */
92 "Not connected.", /* ERR_CONN -11 */
93 "Low-level netif error.", /* ERR_IF -12 */
94 "Connection aborted.", /* ERR_ABRT -13 */
95 "Connection reset.", /* ERR_RST -14 */
96 "Connection closed.", /* ERR_CLSD -15 */
97 "Illegal argument." /* ERR_ARG -16 */
98 };
99
100 /**
101 * Convert an lwip internal error to a string representation.
102 *
103 * @param err an lwip internal err_t
104 * @return a string representation for err
105 */
106 const char *
lwip_strerr(err_t err)107 lwip_strerr(err_t err)
108 {
109 if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_strerr))) {
110 return "Unknown error.";
111 }
112 return err_strerr[-err];
113 }
114
115 #endif /* LWIP_DEBUG */
116