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
210
211
212
213
|
/*
Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "xlator.h"
#include "glusterfs.h"
#include "compat-errno.h"
#include "glusterd.h"
#include "glusterd-utils.h"
#include "glusterfs3.h"
#include "protocol-common.h"
#include "rpcsvc.h"
typedef ssize_t (*gfs_serialize_t) (struct iovec outmsg, void *data);
static size_t
build_volfile_path (const char *volname, char *path,
size_t path_len)
{
struct stat stbuf = {0,};
int32_t ret = -1;
glusterd_conf_t *priv = NULL;
char *vol = NULL;
char *dup_volname = NULL;
char *free_ptr = NULL;
char *tmp = NULL;
glusterd_volinfo_t *volinfo = NULL;
priv = THIS->private;
if (volname[0] != '/') {
/* Normal behavior */
dup_volname = gf_strdup (volname);
} else {
/* Bringing in NFS like behavior for mount command, */
/* With this, one can mount a volume with below cmd */
/* bash# mount -t glusterfs server:/volume /mnt/pnt */
dup_volname = gf_strdup (&volname[1]);
}
free_ptr = dup_volname;
ret = glusterd_volinfo_find (dup_volname, &volinfo);
if (ret) {
/* Split the volume name */
vol = strtok_r (dup_volname, ".", &tmp);
if (!vol)
goto out;
ret = glusterd_volinfo_find (vol, &volinfo);
if (ret)
goto out;
}
ret = snprintf (path, path_len, "%s/vols/%s/%s.vol",
priv->workdir, volinfo->volname, volname);
if (ret == -1)
goto out;
ret = stat (path, &stbuf);
if ((ret == -1) && (errno == ENOENT)) {
ret = snprintf (path, path_len, "%s/vols/%s/%s-fuse.vol",
priv->workdir, volinfo->volname, volname);
ret = stat (path, &stbuf);
}
if ((ret == -1) && (errno == ENOENT)) {
ret = snprintf (path, path_len, "%s/vols/%s/%s-tcp.vol",
priv->workdir, volinfo->volname, volname);
}
ret = 1;
out:
if (free_ptr)
GF_FREE (free_ptr);
return ret;
}
static int
xdr_to_glusterfs_req (rpcsvc_request_t *req, void *arg, gfs_serialize_t sfunc)
{
int ret = -1;
if (!req)
return -1;
ret = sfunc (req->msg[0], arg);
if (ret > 0)
ret = 0;
return ret;
}
int
server_getspec (rpcsvc_request_t *req)
{
int32_t ret = -1;
int32_t op_errno = 0;
int32_t spec_fd = -1;
size_t file_len = 0;
char filename[ZR_PATH_MAX] = {0,};
struct stat stbuf = {0,};
char *volume = NULL;
int cookie = 0;
gf_getspec_req args = {0,};
gf_getspec_rsp rsp = {0,};
if (xdr_to_glusterfs_req (req, &args, xdr_to_getspec_req)) {
//failed to decode msg;
req->rpc_err = GARBAGE_ARGS;
goto fail;
}
volume = args.key;
ret = build_volfile_path (volume, filename, sizeof (filename));
if (ret > 0) {
/* to allocate the proper buffer to hold the file data */
ret = stat (filename, &stbuf);
if (ret < 0){
gf_log ("glusterd", GF_LOG_ERROR,
"Unable to stat %s (%s)",
filename, strerror (errno));
goto fail;
}
spec_fd = open (filename, O_RDONLY);
if (spec_fd < 0) {
gf_log ("glusterd", GF_LOG_ERROR,
"Unable to open %s (%s)",
filename, strerror (errno));
goto fail;
}
ret = file_len = stbuf.st_size;
} else {
op_errno = ENOENT;
}
if (file_len) {
rsp.spec = CALLOC (file_len+1, sizeof (char));
if (!rsp.spec) {
ret = -1;
op_errno = ENOMEM;
goto fail;
}
ret = read (spec_fd, rsp.spec, file_len);
close (spec_fd);
}
/* convert to XDR */
fail:
rsp.op_ret = ret;
if (op_errno)
rsp.op_errno = gf_errno_to_error (op_errno);
if (cookie)
rsp.op_errno = cookie;
if (!rsp.spec)
rsp.spec = "";
glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
(gd_serialize_t)xdr_serialize_getspec_rsp);
if (args.key)
free (args.key);//malloced by xdr
if (rsp.spec && (strcmp (rsp.spec, "")))
free (rsp.spec);
return 0;
}
rpcsvc_actor_t gluster_handshake_actors[] = {
[GF_HNDSK_NULL] = {"NULL", GF_HNDSK_NULL, NULL, NULL, NULL },
[GF_HNDSK_GETSPEC] = {"GETSPEC", GF_HNDSK_GETSPEC, server_getspec, NULL, NULL },
};
struct rpcsvc_program gluster_handshake_prog = {
.progname = "GlusterFS Handshake",
.prognum = GLUSTER_HNDSK_PROGRAM,
.progver = GLUSTER_HNDSK_VERSION,
.actors = gluster_handshake_actors,
.numactors = GF_HNDSK_MAXVALUE,
};
|
