1 /*
2 * Copyright (C) 2004, 2005, 2007, 2011, 2012 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 /* $Id$ */
19
20 /*! \file */
21
22 #include <config.h>
23
24 #include <isc/result.h>
25 #include <isc/strerror.h>
26 #include <isc/util.h>
27
28 #include "errno2result.h"
29
30 /*%
31 * Convert a POSIX errno value into an isc_result_t. The
32 * list of supported errno values is not complete; new users
33 * of this function should add any expected errors that are
34 * not already there.
35 */
36 isc_result_t
isc___errno2result(int posixerrno,const char * file,unsigned int line)37 isc___errno2result(int posixerrno, const char *file, unsigned int line) {
38 char strbuf[ISC_STRERRORSIZE];
39
40 switch (posixerrno) {
41 case ENOTDIR:
42 case ELOOP:
43 case EINVAL: /* XXX sometimes this is not for files */
44 case ENAMETOOLONG:
45 case EBADF:
46 return (ISC_R_INVALIDFILE);
47 case ENOENT:
48 return (ISC_R_FILENOTFOUND);
49 case EACCES:
50 case EPERM:
51 return (ISC_R_NOPERM);
52 case EEXIST:
53 return (ISC_R_FILEEXISTS);
54 case EIO:
55 return (ISC_R_IOERROR);
56 case ENOMEM:
57 return (ISC_R_NOMEMORY);
58 case ENFILE:
59 case EMFILE:
60 return (ISC_R_TOOMANYOPENFILES);
61 case EPIPE:
62 #ifdef ECONNRESET
63 case ECONNRESET:
64 #endif
65 #ifdef ECONNABORTED
66 case ECONNABORTED:
67 #endif
68 return (ISC_R_CONNECTIONRESET);
69 #ifdef ENOTCONN
70 case ENOTCONN:
71 return (ISC_R_NOTCONNECTED);
72 #endif
73 #ifdef ETIMEDOUT
74 case ETIMEDOUT:
75 return (ISC_R_TIMEDOUT);
76 #endif
77 #ifdef ENOBUFS
78 case ENOBUFS:
79 return (ISC_R_NORESOURCES);
80 #endif
81 #ifdef EAFNOSUPPORT
82 case EAFNOSUPPORT:
83 return (ISC_R_FAMILYNOSUPPORT);
84 #endif
85 #ifdef ENETDOWN
86 case ENETDOWN:
87 return (ISC_R_NETDOWN);
88 #endif
89 #ifdef EHOSTDOWN
90 case EHOSTDOWN:
91 return (ISC_R_HOSTDOWN);
92 #endif
93 #ifdef ENETUNREACH
94 case ENETUNREACH:
95 return (ISC_R_NETUNREACH);
96 #endif
97 #ifdef EHOSTUNREACH
98 case EHOSTUNREACH:
99 return (ISC_R_HOSTUNREACH);
100 #endif
101 #ifdef EADDRINUSE
102 case EADDRINUSE:
103 return (ISC_R_ADDRINUSE);
104 #endif
105 case EADDRNOTAVAIL:
106 return (ISC_R_ADDRNOTAVAIL);
107 case ECONNREFUSED:
108 return (ISC_R_CONNREFUSED);
109 default:
110 isc__strerror(posixerrno, strbuf, sizeof(strbuf));
111 UNEXPECTED_ERROR(file, line, "unable to convert errno "
112 "to isc_result: %d: %s",
113 posixerrno, strbuf);
114 /*
115 * XXXDCL would be nice if perhaps this function could
116 * return the system's error string, so the caller
117 * might have something more descriptive than "unexpected
118 * error" to log with.
119 */
120 return (ISC_R_UNEXPECTED);
121 }
122 }
123