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 EMSGSIZE, /* ERR_MSGSIZE -13 Message too long. */
63 ENODEV, /* ERR_NODEV -14 No such device. */
64 ENXIO, /* ERR_NODEVADDR -15 No such device or address. */
65 EDESTADDRREQ, /* ERR_NODEST -16 socket is not connection-mode & no peer address is set. */
66 ENETDOWN, /* ERR_NETDOWN -17 Network is down. */
67 EAFNOSUPPORT, /* ERR_AFNOSUPP -18 Address family not supported by protocol. */
68 EADDRNOTAVAIL, /* ERR_NOADDR -19 Cannot assign requested address */
69 EOPNOTSUPP, /* ERR_OPNOTSUPP -20 Operation not supported on transport endpoint */
70 ENETUNREACH, /* ERR_NETUNREACH -21 No route to the network */
71 ETIMEDOUT, /* ERR_CONNECTIMEOUT -22 Connection request timedout */
72 EPIPE, /* ERR_PIPE -23 PIPE Error. */
73 EAFNOSUPPORT, /* ERR_AFNOSUPPORT -24 AF not supported */
74 ENOPROTOOPT, /* ERR_NOPROTOOPT -25 Protocol not available */
75 EACCES, /* ERR_ACCESS -26 Error to access */
76 ENFILE, /* ERR_NFILE -27 Socket out of resources */
77 EIO, /* ERR_RESERVE3 -28 Reserved for future use */
78 EIO, /* ERR_RESERVE4 -29 Reserved for future use */
79 EIO, /* ERR_RESERVE5 -30 Reserved for future use */
80 EIO, /* ERR_RESERVE6 -31 Reserved for future use */
81 EIO, /* ERR_RESERVE7 -32 Reserved for future use */
82 ECONNABORTED, /* ERR_ABRT -33 Connection aborted. */
83 ECONNRESET, /* ERR_RST -34 Connection reset. */
84 ENOTCONN, /* ERR_CLSD -35 Connection closed. */
85 EIO, /* ERR_ARG -36 Illegal argument. */
86 ECONNREFUSED, /* ERR_CONNREFUSED -37 Connection refused. */
87 -2, /* ERR_MAX_VAL -38 Invalid error */
88 };
89
90 int
err_to_errno(err_t err)91 err_to_errno(err_t err)
92 {
93 if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_to_errno_table))) {
94 return EIO;
95 }
96 return err_to_errno_table[-err];
97 }
98 #endif /* !NO_SYS */
99
100 #ifdef LWIP_DEBUG
101
102 static const char *err_strerr[] = {
103 "Ok.", /* ERR_OK 0 */
104 "Out of memory error.", /* ERR_MEM -1 */
105 "Buffer error.", /* ERR_BUF -2 */
106 "Timeout.", /* ERR_TIMEOUT -3 */
107 "Routing problem.", /* ERR_RTE -4 */
108 "Operation in progress.", /* ERR_INPROGRESS -5 */
109 "Illegal value.", /* ERR_VAL -6 */
110 "Operation would block.", /* ERR_WOULDBLOCK -7 */
111 "Address in use.", /* ERR_USE -8 */
112 "Already connecting.", /* ERR_ALREADY -9 */
113 "Already connected.", /* ERR_ISCONN -10 */
114 "Not connected.", /* ERR_CONN -11 */
115 "Low-level netif error.", /* ERR_IF -12 */
116 "Message too long.", /* ERR_MSGSIZE -13 */
117 "No such device.", /* ERR_NODEV -14 */
118 "No such device or address.", /* ERR_NODEVADDR -15 */
119 "socket is not connection-mode & no peer address is set.", /* ERR_NODEST -16 */
120 "Network is down.", /* ERR_NETDOWN -17 */
121 "Address family not supported by protocol.", /* ERR_AFNOSUPP -18 */
122 "Cannot assign requested address", /* ERR_NOADDR -19 */
123 "Operation not supported on transport endpoint", /* ERR_OPNOTSUPP -20 */
124 "No route to the network", /* ERR_NETUNREACH -21 */
125 "Connection request timedout", /* ERR_CONNECTIMEOUT -22 */
126 "PIPE Error.", /* ERR_PIPE -23 */
127 "AF not supported", /* ERR_AFNOSUPPORT -24 */
128 "Protocol not available", /* ERR_NOPROTOOPT -25 */
129 "Reserved for future use", /* ERR_RESERVE1 -26 */
130 "Reserved for future use", /* ERR_RESERVE2 -27 */
131 "Reserved for future use", /* ERR_RESERVE3 -28 */
132 "Reserved for future use", /* ERR_RESERVE4 -29 */
133 "Reserved for future use", /* ERR_RESERVE5 -30 */
134 "Reserved for future use", /* ERR_RESERVE6 -31 */
135 "Reserved for future use", /* ERR_RESERVE7 -32 */
136 "Connection aborted.", /* ERR_ABRT -33 */
137 "Connection reset.", /* ERR_RST -34 */
138 "Connection closed.", /* ERR_CLSD -35 */
139 "Illegal argument.", /* ERR_ARG -36 */
140 "Connection refused.", /* ERR_CONNREFUSED -37 */
141 "Invalid error code" /* ERR_MAX_VAL -38 */
142 };
143
144 /**
145 * Convert an lwip internal error to a string representation.
146 *
147 * @param err an lwip internal err_t
148 * @return a string representation for err
149 */
150 const char *
lwip_strerr(err_t err)151 lwip_strerr(err_t err)
152 {
153 if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_strerr))) {
154 return "Unknown error.";
155 }
156 return err_strerr[-err];
157 }
158
159 #endif /* LWIP_DEBUG */
160