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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/* Copyright 2007-2010 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <assert.h> /* assert */
#include <errno.h> /* errno */
#include <string.h> /* strerror */
#include <libipset/debug.h> /* D() */
#include <libipset/data.h> /* ipset_data_get */
#include <libipset/session.h> /* ipset_err */
#include <libipset/types.h> /* struct ipset_type */
#include <libipset/utils.h> /* STRNEQ */
#include <libipset/errcode.h> /* prototypes */
#include <libipset/linux_ip_set_bitmap.h> /* bitmap specific errcodes */
#include <libipset/linux_ip_set_hash.h> /* hash specific errcodes */
#include <libipset/linux_ip_set_list.h> /* list specific errcodes */
/* Core kernel error codes */
static const struct ipset_errcode_table core_errcode_table[] = {
/* Generic error codes */
{ ENOENT, 0,
"The set with the given name does not exist" },
{ EMSGSIZE, 0,
"Kernel error received: message could not be created" },
{ IPSET_ERR_PROTOCOL, 0,
"Kernel error received: ipset protocol error" },
/* CREATE specific error codes */
{ EEXIST, IPSET_CMD_CREATE,
"Set cannot be created: set with the same name already exists" },
{ IPSET_ERR_FIND_TYPE, 0,
"Kernel error received: set type not supported" },
{ IPSET_ERR_MAX_SETS, 0,
"Kernel error received: maximal number of sets reached, "
"cannot create more." },
{ IPSET_ERR_INVALID_NETMASK, 0,
"The value of the netmask parameter is invalid" },
{ IPSET_ERR_INVALID_MARKMASK, 0,
"The value of the markmask parameter is invalid" },
{ IPSET_ERR_INVALID_FAMILY, 0,
"Protocol family not supported by the set type" },
/* DESTROY specific error codes */
{ IPSET_ERR_BUSY, IPSET_CMD_DESTROY,
"Set cannot be destroyed: it is in use by a kernel component" },
/* FLUSH specific error codes */
/* RENAME specific error codes */
{ IPSET_ERR_EXIST_SETNAME2, IPSET_CMD_RENAME,
"Set cannot be renamed: a set with the new name already exists" },
{ IPSET_ERR_REFERENCED, IPSET_CMD_RENAME,
"Set cannot be renamed: it is in use by another system" },
/* SWAP specific error codes */
{ IPSET_ERR_EXIST_SETNAME2, IPSET_CMD_SWAP,
"Sets cannot be swapped: the second set does not exist" },
{ IPSET_ERR_TYPE_MISMATCH, IPSET_CMD_SWAP,
"The sets cannot be swapped: their type does not match" },
/* LIST/SAVE specific error codes */
/* Generic (CADT) error codes */
{ IPSET_ERR_INVALID_CIDR, 0,
"The value of the CIDR parameter of the IP address is invalid" },
{ IPSET_ERR_TIMEOUT, 0,
"Timeout cannot be used: set was created without timeout support" },
{ IPSET_ERR_IPADDR_IPV4, 0,
"An IPv4 address is expected, but not received" },
{ IPSET_ERR_IPADDR_IPV6, 0,
"An IPv6 address is expected, but not received" },
{ IPSET_ERR_COUNTER, 0,
"Packet/byte counters cannot be used: set was created without counter support" },
{ IPSET_ERR_COMMENT, 0,
"Comment cannot be used: set was created without comment support" },
{ IPSET_ERR_SKBINFO, 0,
"Skbinfo mapping cannot be used: set was created without skbinfo support" },
/* ADD specific error codes */
{ IPSET_ERR_EXIST, IPSET_CMD_ADD,
"Element cannot be added to the set: it's already added" },
/* DEL specific error codes */
{ IPSET_ERR_EXIST, IPSET_CMD_DEL,
"Element cannot be deleted from the set: it's not added" },
/* TEST specific error codes */
/* HEADER specific error codes */
/* TYPE specific error codes */
{ EEXIST, IPSET_CMD_TYPE,
"Kernel error received: set type does not supported" },
/* PROTOCOL specific error codes */
{ },
};
/* Bitmap type-specific error codes */
static const struct ipset_errcode_table bitmap_errcode_table[] = {
/* Generic (CADT) error codes */
{ IPSET_ERR_BITMAP_RANGE, 0,
"Element is out of the range of the set" },
{ IPSET_ERR_BITMAP_RANGE_SIZE, IPSET_CMD_CREATE,
"The range you specified exceeds the size limit of the set type" },
{ },
};
/* Hash type-specific error codes */
static const struct ipset_errcode_table hash_errcode_table[] = {
/* Generic (CADT) error codes */
{ IPSET_ERR_HASH_FULL, 0,
"Hash is full, cannot add more elements" },
{ IPSET_ERR_HASH_ELEM, 0,
"Null-valued element, cannot be stored in a hash type of set" },
{ IPSET_ERR_INVALID_PROTO, 0,
"Invalid protocol specified" },
{ IPSET_ERR_MISSING_PROTO, 0,
"Protocol missing, but must be specified" },
{ IPSET_ERR_HASH_RANGE_UNSUPPORTED, 0,
"Range is not supported in the \"net\" component of the element" },
{ IPSET_ERR_HASH_RANGE, 0,
"Invalid range, covers the whole address space" },
{ },
};
/* List type-specific error codes */
static const struct ipset_errcode_table list_errcode_table[] = {
/* Generic (CADT) error codes */
{ IPSET_ERR_NAME, 0,
"Set to be added/deleted/tested as element does not exist." },
{ IPSET_ERR_LOOP, 0,
"Sets with list:set type cannot be added to the set." },
{ IPSET_ERR_BEFORE, 0,
"No reference set specified." },
{ IPSET_ERR_NAMEREF, 0,
"The set to which you referred with 'before' or 'after' "
"does not exist." },
{ IPSET_ERR_LIST_FULL, 0,
"The set is full, more elements cannot be added." },
{ IPSET_ERR_REF_EXIST, 0,
"The set to which you referred with 'before' or 'after' "
"is not added to the set." },
{ },
};
/* Match set type names */
#define MATCH_TYPENAME(a, b) STRNEQ(a, b, strlen(b))
/**
* ipset_errcode - interpret a kernel error code
* @session: session structure
* @errcode: errcode
*
* Find the error code and print the appropriate
* error message into the error buffer.
*
* Returns -1.
*/
int
ipset_errcode(struct ipset_session *session, enum ipset_cmd cmd, int errcode)
{
const struct ipset_errcode_table *table = core_errcode_table;
int i, generic;
if (errcode >= IPSET_ERR_TYPE_SPECIFIC) {
const struct ipset_type *type;
type = ipset_saved_type(session);
if (type) {
if (MATCH_TYPENAME(type->name, "bitmap:"))
table = bitmap_errcode_table;
else if (MATCH_TYPENAME(type->name, "hash:"))
table = hash_errcode_table;
else if (MATCH_TYPENAME(type->name, "list:"))
table = list_errcode_table;
}
}
retry:
for (i = 0, generic = -1; table[i].errcode; i++) {
if (table[i].errcode == errcode &&
(table[i].cmd == cmd || table[i].cmd == 0)) {
if (table[i].cmd == 0) {
generic = i;
continue;
}
return ipset_err(session, table[i].message);
}
}
if (generic != -1)
return ipset_err(session, table[generic].message);
/* Fall back to the core table */
if (table != core_errcode_table) {
table = core_errcode_table;
goto retry;
}
if (errcode < IPSET_ERR_PRIVATE)
return ipset_err(session, "Kernel error received: %s",
strerror(errcode));
else
return ipset_err(session,
"Undecoded error %u received from kernel",
errcode);
}
|
