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-private/netlink.h>
13 #include <netlink/netlink.h>
14
15 static 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 [NLE_PARSE_ERR] = "Unable to parse object",
47 [NLE_NODEV] = "No such device",
48 [NLE_IMMUTABLE] = "Immutable attribute",
49 [NLE_DUMP_INTR] = "Dump inconsistency detected, interrupted",
50 };
51
52 /**
53 * Return error message for an error code
54 * @return error message
55 */
nl_geterror(int error)56 const char *nl_geterror(int error)
57 {
58 error = abs(error);
59
60 if (error > NLE_MAX)
61 error = NLE_FAILURE;
62
63 return errmsg[error];
64 }
65
66 /**
67 * Print a libnl error message
68 * @arg s error message prefix
69 *
70 * Prints the error message of the call that failed last.
71 *
72 * If s is not NULL and *s is not a null byte the argument
73 * string is printed, followed by a colon and a blank. Then
74 * the error message and a new-line.
75 */
nl_perror(int error,const char * s)76 void nl_perror(int error, const char *s)
77 {
78 if (s && *s)
79 fprintf(stderr, "%s: %s\n", s, nl_geterror(error));
80 else
81 fprintf(stderr, "%s\n", nl_geterror(error));
82 }
83
nl_syserr2nlerr(int error)84 int nl_syserr2nlerr(int error)
85 {
86 error = abs(error);
87
88 switch (error) {
89 case EBADF: return NLE_BAD_SOCK;
90 case EADDRINUSE: return NLE_EXIST;
91 case EEXIST: return NLE_EXIST;
92 case EADDRNOTAVAIL: return NLE_NOADDR;
93 case ESRCH: /* fall through */
94 case ENOENT: return NLE_OBJ_NOTFOUND;
95 case EINTR: return NLE_INTR;
96 case EAGAIN: return NLE_AGAIN;
97 case ENOTSOCK: return NLE_BAD_SOCK;
98 case ENOPROTOOPT: return NLE_INVAL;
99 case EFAULT: return NLE_INVAL;
100 case EACCES: return NLE_NOACCESS;
101 case EINVAL: return NLE_INVAL;
102 case ENOBUFS: return NLE_NOMEM;
103 case ENOMEM: return NLE_NOMEM;
104 case EAFNOSUPPORT: return NLE_AF_NOSUPPORT;
105 case EPROTONOSUPPORT: return NLE_PROTO_MISMATCH;
106 case EOPNOTSUPP: return NLE_OPNOTSUPP;
107 case EPERM: return NLE_PERM;
108 case EBUSY: return NLE_BUSY;
109 case ERANGE: return NLE_RANGE;
110 case ENODEV: return NLE_NODEV;
111 default: return NLE_FAILURE;
112 }
113 }
114
115 /** @} */
116
117