errno2result.c revision 290001 
1/*
2 * Copyright (C) 2004, 2005, 2007, 2008  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2000-2002  Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* $Id: errno2result.c,v 1.17 2008/09/12 04:46:25 marka Exp $ */
19
20#include <config.h>
21
22#include <winsock2.h>
23#include "errno2result.h"
24#include <isc/result.h>
25#include <isc/strerror.h>
26#include <isc/util.h>
27
28/*
29 * Convert a POSIX errno value into an isc_result_t.  The
30 * list of supported errno values is not complete; new users
31 * of this function should add any expected errors that are
32 * not already there.
33 */
34isc_result_t
35isc__errno2resultx(int posixerrno, const char *file, int line) {
36	char strbuf[ISC_STRERRORSIZE];
37
38	switch (posixerrno) {
39	case ENOTDIR:
40	case WSAELOOP:
41	case WSAEINVAL:
42	case EINVAL:		/* XXX sometimes this is not for files */
43	case ENAMETOOLONG:
44	case WSAENAMETOOLONG:
45	case EBADF:
46	case WSAEBADF:
47		return (ISC_R_INVALIDFILE);
48	case ENOENT:
49		return (ISC_R_FILENOTFOUND);
50	case EACCES:
51	case WSAEACCES:
52	case EPERM:
53		return (ISC_R_NOPERM);
54	case EEXIST:
55		return (ISC_R_FILEEXISTS);
56	case EIO:
57		return (ISC_R_IOERROR);
58	case ENOMEM:
59		return (ISC_R_NOMEMORY);
60	case ENFILE:
61	case EMFILE:
62	case WSAEMFILE:
63		return (ISC_R_TOOMANYOPENFILES);
64	case ERROR_CANCELLED:
65		return (ISC_R_CANCELED);
66	case ERROR_CONNECTION_REFUSED:
67	case WSAECONNREFUSED:
68		return (ISC_R_CONNREFUSED);
69	case WSAENOTCONN:
70	case ERROR_CONNECTION_INVALID:
71		return (ISC_R_NOTCONNECTED);
72	case ERROR_HOST_UNREACHABLE:
73	case WSAEHOSTUNREACH:
74		return (ISC_R_HOSTUNREACH);
75	case ERROR_NETWORK_UNREACHABLE:
76	case WSAENETUNREACH:
77		return (ISC_R_NETUNREACH);
78	case ERROR_NO_NETWORK:
79		return (ISC_R_NETUNREACH);
80	case ERROR_PORT_UNREACHABLE:
81		return (ISC_R_HOSTUNREACH);
82	case ERROR_SEM_TIMEOUT:
83		return (ISC_R_TIMEDOUT);
84	case WSAECONNRESET:
85	case WSAENETRESET:
86	case WSAECONNABORTED:
87	case WSAEDISCON:
88	case ERROR_OPERATION_ABORTED:
89	case ERROR_CONNECTION_ABORTED:
90	case ERROR_REQUEST_ABORTED:
91		return (ISC_R_CONNECTIONRESET);
92	case WSAEADDRNOTAVAIL:
93		return (ISC_R_ADDRNOTAVAIL);
94	case ERROR_NETNAME_DELETED:
95	case WSAENETDOWN:
96		return (ISC_R_NETUNREACH);
97	case WSAEHOSTDOWN:
98		return (ISC_R_HOSTUNREACH);
99	case WSAENOBUFS:
100		return (ISC_R_NORESOURCES);
101	default:
102		isc__strerror(posixerrno, strbuf, sizeof(strbuf));
103		UNEXPECTED_ERROR(file, line, "unable to convert errno "
104				 "to isc_result: %d: %s", posixerrno, strbuf);
105		/*
106		 * XXXDCL would be nice if perhaps this function could
107		 * return the system's error string, so the caller
108		 * might have something more descriptive than "unexpected
109		 * error" to log with.
110		 */
111		return (ISC_R_UNEXPECTED);
112	}
113}
114