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
|
/*
Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef _CHANGELOG_MISC_H
#define _CHANGELOG_MISC_H
#include "glusterfs.h"
#include "common-utils.h"
#define CHANGELOG_MAX_TYPE 3
#define CHANGELOG_FILE_NAME "CHANGELOG"
#define CHANGELOG_VERSION_MAJOR 1
#define CHANGELOG_VERSION_MINOR 0
#define CHANGELOG_UNIX_SOCK DEFAULT_VAR_RUN_DIRECTORY"/changelog-%s.sock"
/**
* header starts with the version and the format of the changelog.
* 'version' not much of a use now.
*/
#define CHANGELOG_HEADER \
"GlusterFS Changelog | version: v%d.%d | encoding : %d\n"
#define CHANGELOG_MAKE_SOCKET_PATH(brick_path, sockpath, len) do { \
char md5_sum[MD5_DIGEST_LENGTH*2+1] = {0,}; \
md5_wrapper((unsigned char *) brick_path, \
strlen(brick_path), \
md5_sum); \
(void) snprintf (sockpath, len, \
CHANGELOG_UNIX_SOCK, md5_sum); \
} while (0)
/**
* ... used by libgfchangelog.
*/
#define CHANGELOG_GET_ENCODING(fd, buffer, len, enc, enc_len) do { \
FILE *fp; \
int fd_dup, maj, min; \
\
enc = -1; \
fd_dup = dup (fd); \
\
if (fd_dup != -1) { \
fp = fdopen (fd_dup, "r"); \
if (fp) { \
if (fgets (buffer, len, fp)) { \
elen = strlen (buffer); \
sscanf (buffer, \
CHANGELOG_HEADER, \
&maj, &min, &enc); \
} \
fclose (fp); \
} else { \
close (fd_dup); \
} \
} \
} while (0)
/**
* everything after 'CHANGELOG_TYPE_ENTRY' are internal types
* (ie. none of the fops trigger this type of event), hence
* CHANGELOG_MAX_TYPE = 3
*/
typedef enum {
CHANGELOG_TYPE_DATA = 0,
CHANGELOG_TYPE_METADATA,
CHANGELOG_TYPE_ENTRY,
CHANGELOG_TYPE_ROLLOVER,
CHANGELOG_TYPE_FSYNC,
} changelog_log_type;
/* operation modes - RT for now */
typedef enum {
CHANGELOG_MODE_RT = 0,
} changelog_mode_t;
/* encoder types */
typedef enum {
CHANGELOG_ENCODE_MIN = 0,
CHANGELOG_ENCODE_BINARY,
CHANGELOG_ENCODE_ASCII,
CHANGELOG_ENCODE_MAX,
} changelog_encoder_t;
#define CHANGELOG_VALID_ENCODING(enc) \
(enc > CHANGELOG_ENCODE_MIN && enc < CHANGELOG_ENCODE_MAX)
#define CHANGELOG_TYPE_IS_ENTRY(type) (type == CHANGELOG_TYPE_ENTRY)
#define CHANGELOG_TYPE_IS_ROLLOVER(type) (type == CHANGELOG_TYPE_ROLLOVER)
#define CHANGELOG_TYPE_IS_FSYNC(type) (type == CHANGELOG_TYPE_FSYNC)
#endif /* _CHANGELOG_MISC_H */
|
