1/*
2 * lib/error.c		Error Handling
3 *
4 *	This library is free software; you can redistribute it and/or
5 *	modify it under the terms of the GNU Lesser General Public
6 *	License as published by the Free Software Foundation version 2.1
7 *	of the License.
8 *
9 * Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
10 */
11
12#include <netlink-local.h>
13#include <netlink/netlink.h>
14
15static const char *errmsg[NLE_MAX+1] = {
16[NLE_SUCCESS]		= "Success",
17[NLE_FAILURE]		= "Unspecific failure",
18[NLE_INTR]		= "Interrupted system call",
19[NLE_BAD_SOCK]		= "Bad socket",
20[NLE_AGAIN]		= "Try again",
21[NLE_NOMEM]		= "Out of memory",
22[NLE_EXIST]		= "Object exists",
23[NLE_INVAL]		= "Invalid input data or parameter",
24[NLE_RANGE]		= "Input data out of range",
25[NLE_MSGSIZE]		= "Message size not sufficient",
26[NLE_OPNOTSUPP]		= "Operation not supported",
27[NLE_AF_NOSUPPORT]	= "Address family not supported",
28[NLE_OBJ_NOTFOUND]	= "Object not found",
29[NLE_NOATTR]		= "Attribute not available",
30[NLE_MISSING_ATTR]	= "Missing attribute",
31[NLE_AF_MISMATCH]	= "Address family mismatch",
32[NLE_SEQ_MISMATCH]	= "Message sequence number mismatch",
33[NLE_MSG_OVERFLOW]	= "Kernel reported message overflow",
34[NLE_MSG_TRUNC]		= "Kernel reported truncated message",
35[NLE_NOADDR]		= "Invalid address for specified address family",
36[NLE_SRCRT_NOSUPPORT]	= "Source based routing not supported",
37[NLE_MSG_TOOSHORT]	= "Netlink message is too short",
38[NLE_MSGTYPE_NOSUPPORT]	= "Netlink message type is not supported",
39[NLE_OBJ_MISMATCH]	= "Object type does not match cache",
40[NLE_NOCACHE]		= "Unknown or invalid cache type",
41[NLE_BUSY]		= "Object busy",
42[NLE_PROTO_MISMATCH]	= "Protocol mismatch",
43[NLE_NOACCESS]		= "No Access",
44[NLE_PERM]		= "Operation not permitted",
45[NLE_PKTLOC_FILE]	= "Unable to open packet location file",
46};
47
48/**
49 * Return error message for an error code
50 * @return error message
51 */
52const char *nl_geterror(int error)
53{
54	error = abs(error);
55
56	if (error > NLE_MAX)
57		error = NLE_FAILURE;
58
59	return errmsg[error];
60}
61
62/**
63 * Print a libnl error message
64 * @arg s		error message prefix
65 *
66 * Prints the error message of the call that failed last.
67 *
68 * If s is not NULL and *s is not a null byte the argument
69 * string is printed, followed by a colon and a blank. Then
70 * the error message and a new-line.
71 */
72void nl_perror(int error, const char *s)
73{
74	if (s && *s)
75		fprintf(stderr, "%s: %s\n", s, nl_geterror(error));
76	else
77		fprintf(stderr, "%s\n", nl_geterror(error));
78}
79
80int nl_syserr2nlerr(int error)
81{
82	error = abs(error);
83
84	switch (error) {
85	case EBADF:		return NLE_BAD_SOCK;
86	case EADDRINUSE:	return NLE_EXIST;
87	case EEXIST:		return NLE_EXIST;
88	case EADDRNOTAVAIL:	return NLE_NOADDR;
89	case ENOENT:		return NLE_OBJ_NOTFOUND;
90	case EINTR:		return NLE_INTR;
91	case EAGAIN:		return NLE_AGAIN;
92	case ENOTSOCK:		return NLE_BAD_SOCK;
93	case ENOPROTOOPT:	return NLE_INVAL;
94	case EFAULT:		return NLE_INVAL;
95	case EACCES:		return NLE_NOACCESS;
96	case EINVAL:		return NLE_INVAL;
97	case ENOBUFS:		return NLE_NOMEM;
98	case ENOMEM:		return NLE_NOMEM;
99	case EAFNOSUPPORT:	return NLE_AF_NOSUPPORT;
100	case EPROTONOSUPPORT:	return NLE_PROTO_MISMATCH;
101	case EOPNOTSUPP:	return NLE_OPNOTSUPP;
102	case EPERM:		return NLE_PERM;
103	case EBUSY:		return NLE_BUSY;
104	case ERANGE:		return NLE_RANGE;
105	default:		return NLE_FAILURE;
106	}
107}
108
109/** @} */
110
111