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
|
/*
Copyright (c) 2008-2012 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.
*/
#include "defaults.h"
#include "read-only-common.h"
#include "read-only-mem-types.h"
#include "read-only.h"
int32_t
mem_acct_init(xlator_t *this)
{
int ret = -1;
ret = xlator_mem_acct_init(this, gf_read_only_mt_end + 1);
if (ret)
gf_log(this->name, GF_LOG_ERROR,
"Memory accounting "
"initialization failed.");
return ret;
}
int32_t
init(xlator_t *this)
{
int ret = -1;
read_only_priv_t *priv = NULL;
if (!this->children || this->children->next) {
gf_log(this->name, GF_LOG_ERROR,
"translator not configured with exactly one child");
return -1;
}
if (!this->parents) {
gf_log(this->name, GF_LOG_WARNING, "dangling volume. check volfile ");
}
priv = GF_CALLOC(1, sizeof(*priv), gf_read_only_mt_priv_t);
if (!priv)
goto out;
this->private = priv;
GF_OPTION_INIT("read-only", priv->readonly_or_worm_enabled, bool, out);
ret = 0;
out:
return ret;
}
int
reconfigure(xlator_t *this, dict_t *options)
{
read_only_priv_t *priv = NULL;
int ret = -1;
gf_boolean_t readonly_or_worm_enabled = _gf_false;
priv = this->private;
GF_ASSERT(priv);
GF_OPTION_RECONF("read-only", readonly_or_worm_enabled, options, bool, out);
priv->readonly_or_worm_enabled = readonly_or_worm_enabled;
ret = 0;
out:
gf_log(this->name, GF_LOG_DEBUG, "returning %d", ret);
return ret;
}
void
fini(xlator_t *this)
{
read_only_priv_t *priv = NULL;
priv = this->private;
if (!priv)
return;
this->private = NULL;
GF_FREE(priv);
return;
}
struct xlator_fops fops = {
.mknod = ro_mknod,
.mkdir = ro_mkdir,
.unlink = ro_unlink,
.rmdir = ro_rmdir,
.symlink = ro_symlink,
.rename = ro_rename,
.link = ro_link,
.truncate = ro_truncate,
.open = ro_open,
.writev = ro_writev,
.setxattr = ro_setxattr,
.fsetxattr = ro_fsetxattr,
.removexattr = ro_removexattr,
.fsyncdir = ro_fsyncdir,
.ftruncate = ro_ftruncate,
.create = ro_create,
.setattr = ro_setattr,
.fsetattr = ro_fsetattr,
.xattrop = ro_xattrop,
.fxattrop = ro_fxattrop,
.inodelk = ro_inodelk,
.finodelk = ro_finodelk,
.entrylk = ro_entrylk,
.fentrylk = ro_fentrylk,
.lk = ro_lk,
.fallocate = ro_fallocate,
};
struct xlator_cbks cbks = {};
struct volume_options options[] = {
{.key = {"read-only"},
.type = GF_OPTION_TYPE_BOOL,
.default_value = "off",
/*.validate_fn = validate_boolean,*/
.op_version = {1},
.flags = OPT_FLAG_SETTABLE,
.description = "When \"on\", makes a volume read-only. It is turned "
"\"off\" by default."},
{.key = {NULL}},
};
|
