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
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 };
47
48 /**
49 * Return error message for an error code
50 * @return error message
51 */
nl_geterror(int error)52 const 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 */
nl_perror(int error,const char * s)72 void 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
nl_syserr2nlerr(int error)80 int 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