libnl: /data/src/libnl3/lib/error.c Source File

libnl 3.7.0

error.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
4 */
5
6 #include <netlink-private/netlink.h>
7 #include <netlink/netlink.h>
8
9 static const char *errmsg[NLE_MAX+1] = {
10 [NLE_SUCCESS] = "Success",
11 [NLE_FAILURE] = "Unspecific failure",
12 [NLE_INTR] = "Interrupted system call",
13 [NLE_BAD_SOCK] = "Bad socket",
14 [NLE_AGAIN] = "Try again",
15 [NLE_NOMEM] = "Out of memory",
16 [NLE_EXIST] = "Object exists",
17 [NLE_INVAL] = "Invalid input data or parameter",
18 [NLE_RANGE] = "Input data out of range",
19 [NLE_MSGSIZE] = "Message size not sufficient",
20 [NLE_OPNOTSUPP] = "Operation not supported",
21 [NLE_AF_NOSUPPORT] = "Address family not supported",
22 [NLE_OBJ_NOTFOUND] = "Object not found",
23 [NLE_NOATTR] = "Attribute not available",
24 [NLE_MISSING_ATTR] = "Missing attribute",
25 [NLE_AF_MISMATCH] = "Address family mismatch",
26 [NLE_SEQ_MISMATCH] = "Message sequence number mismatch",
27 [NLE_MSG_OVERFLOW] = "Kernel reported message overflow",
28 [NLE_MSG_TRUNC] = "Kernel reported truncated message",
29 [NLE_NOADDR] = "Invalid address for specified address family",
30 [NLE_SRCRT_NOSUPPORT] = "Source based routing not supported",
31 [NLE_MSG_TOOSHORT] = "Netlink message is too short",
32 [NLE_MSGTYPE_NOSUPPORT] = "Netlink message type is not supported",
33 [NLE_OBJ_MISMATCH] = "Object type does not match cache",
34 [NLE_NOCACHE] = "Unknown or invalid cache type",
35 [NLE_BUSY] = "Object busy",
36 [NLE_PROTO_MISMATCH] = "Protocol mismatch",
37 [NLE_NOACCESS] = "No Access",
38 [NLE_PERM] = "Operation not permitted",
39 [NLE_PKTLOC_FILE] = "Unable to open packet location file",
40 [NLE_PARSE_ERR] = "Unable to parse object",
41 [NLE_NODEV] = "No such device",
42 [NLE_IMMUTABLE] = "Immutable attribute",
43 [NLE_DUMP_INTR] = "Dump inconsistency detected, interrupted",
44 [NLE_ATTRSIZE] = "Attribute max length exceeded",
45 };
46
47 /**
48 * Return error message for an error code
49 * @return error message
50 */
51 const char *nl_geterror(int error)
52 {
53 error = abs(error);
54
55 if (error > NLE_MAX)
56 error = NLE_FAILURE;
57
58 return errmsg[error];
59 }
60
61 /**
62 * Print a libnl error message
63 * @arg s error message prefix
64 *
65 * Prints the error message of the call that failed last.
66 *
67 * If s is not NULL and *s is not a null byte the argument
68 * string is printed, followed by a colon and a blank. Then
69 * the error message and a new-line.
70 */
71 void nl_perror(int error, const char *s)
72 {
73 if (s && *s)
74 fprintf(stderr, "%s: %s\n", s, nl_geterror(error));
75 else
76 fprintf(stderr, "%s\n", nl_geterror(error));
77 }
78
79 int nl_syserr2nlerr(int error)
80 {
81 error = abs(error);
82
83 switch (error) {
84 case EBADF: return NLE_BAD_SOCK;
85 case EADDRINUSE: return NLE_EXIST;
86 case EEXIST: return NLE_EXIST;
87 case EADDRNOTAVAIL: return NLE_NOADDR;
88 case ESRCH: /* fall through */
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 case ENODEV: return NLE_NODEV;
106 default: return NLE_FAILURE;
107 }
108 }
109
110 /** @} */
111