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
|
/* The (in-memory) format of a log record.
*
* A log record is sequence of nodes of different syntaxes. A log
* record is described by a pointer to its root node.
* The most important node type is literal text, which is always
* assumed if no other syntax is detected. A full list of syntaxes
* can be found below.
*
* Copyright 2015 Rainer Gerhards
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LOGRECORD_H_INCLUDED
#define LOGRECORD_H_INCLUDED
#include <stdint.h>
/* log record node syntaxes
* This "enumeration" starts at 0 and increments for each new
* syntax. Note that we do not use an enum type so that we can
* streamline the in-memory representation. For large sets of
* log records to be held in main memory, this is important.
*/
#define LRN_SYNTAX_LITERAL_TEXT 0
#define LRN_SYNTAX_IPV4 1
#define LRN_SYNTAX_INT_POSITIVE 2
#define LRN_SYNTAX_DATE_RFC3164 3
struct logrec_node {
struct logrec_node *next; /* NULL: end of record */
int8_t ntype;
union {
char *ltext; /* the literal text */
int64_t number; /* all integer types */
} val;
};
typedef struct logrec_node logrecord_t;
#endif /* ifndef LOGRECORD_H_INCLUDED */
|