summaryrefslogtreecommitdiffstats
path: root/lib/isc/unix/errno2result.c
blob: 6f752df97b14dde3aba5dcddf196b60417e0a587 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

/*! \file */

#include "errno2result.h"
#include <stdbool.h>

#include <isc/platform.h>
#include <isc/result.h>
#include <isc/strerr.h>
#include <isc/string.h>
#include <isc/util.h>

/*%
 * Convert a POSIX errno value into an isc_result_t.  The
 * list of supported errno values is not complete; new users
 * of this function should add any expected errors that are
 * not already there.
 */
isc_result_t
isc___errno2result(int posixerrno, bool dolog, const char *file,
		   unsigned int line) {
	char strbuf[ISC_STRERRORSIZE];

	switch (posixerrno) {
	case ENOTDIR:
	case ELOOP:
	case EINVAL: /* XXX sometimes this is not for files */
	case ENAMETOOLONG:
	case EBADF:
		return (ISC_R_INVALIDFILE);
	case ENOENT:
		return (ISC_R_FILENOTFOUND);
	case EACCES:
	case EPERM:
		return (ISC_R_NOPERM);
	case EEXIST:
		return (ISC_R_FILEEXISTS);
	case EIO:
		return (ISC_R_IOERROR);
	case ENOMEM:
		return (ISC_R_NOMEMORY);
	case ENFILE:
	case EMFILE:
		return (ISC_R_TOOMANYOPENFILES);
#ifdef EDQUOT
	case EDQUOT:
		return (ISC_R_DISCQUOTA);
#endif /* ifdef EDQUOT */
	case ENOSPC:
		return (ISC_R_DISCFULL);
#ifdef EOVERFLOW
	case EOVERFLOW:
		return (ISC_R_RANGE);
#endif /* ifdef EOVERFLOW */
	case EPIPE:
#ifdef ECONNRESET
	case ECONNRESET:
#endif /* ifdef ECONNRESET */
#ifdef ECONNABORTED
	case ECONNABORTED:
#endif /* ifdef ECONNABORTED */
		return (ISC_R_CONNECTIONRESET);
#ifdef ENOTCONN
	case ENOTCONN:
		return (ISC_R_NOTCONNECTED);
#endif /* ifdef ENOTCONN */
#ifdef ETIMEDOUT
	case ETIMEDOUT:
		return (ISC_R_TIMEDOUT);
#endif /* ifdef ETIMEDOUT */
#ifdef ENOBUFS
	case ENOBUFS:
		return (ISC_R_NORESOURCES);
#endif /* ifdef ENOBUFS */
#ifdef EAFNOSUPPORT
	case EAFNOSUPPORT:
		return (ISC_R_FAMILYNOSUPPORT);
#endif /* ifdef EAFNOSUPPORT */
#ifdef ENETDOWN
	case ENETDOWN:
		return (ISC_R_NETDOWN);
#endif /* ifdef ENETDOWN */
#ifdef EHOSTDOWN
	case EHOSTDOWN:
		return (ISC_R_HOSTDOWN);
#endif /* ifdef EHOSTDOWN */
#ifdef ENETUNREACH
	case ENETUNREACH:
		return (ISC_R_NETUNREACH);
#endif /* ifdef ENETUNREACH */
#ifdef EHOSTUNREACH
	case EHOSTUNREACH:
		return (ISC_R_HOSTUNREACH);
#endif /* ifdef EHOSTUNREACH */
#ifdef EADDRINUSE
	case EADDRINUSE:
		return (ISC_R_ADDRINUSE);
#endif /* ifdef EADDRINUSE */
	case EADDRNOTAVAIL:
		return (ISC_R_ADDRNOTAVAIL);
	case ECONNREFUSED:
		return (ISC_R_CONNREFUSED);
	default:
		if (dolog) {
			strerror_r(posixerrno, strbuf, sizeof(strbuf));
			UNEXPECTED_ERROR(file, line,
					 "unable to convert errno "
					 "to isc_result: %d: %s",
					 posixerrno, strbuf);
		}
		/*
		 * XXXDCL would be nice if perhaps this function could
		 * return the system's error string, so the caller
		 * might have something more descriptive than "unexpected
		 * error" to log with.
		 */
		return (ISC_R_UNEXPECTED);
	}
}