summaryrefslogtreecommitdiffstats
path: root/xlators/protocol/legacy/server/src/server-protocol.h
blob: e2e1738e969b5d718f213c78d393767059a2611c (plain)
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
/*
  Copyright (c) 2006-2009 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 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
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see
  <http://www.gnu.org/licenses/>.
*/

#ifndef _SERVER_PROTOCOL_H_
#define _SERVER_PROTOCOL_H_

#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif

#include <pthread.h>

#include "glusterfs.h"
#include "xlator.h"
#include "logging.h"
#include "call-stub.h"
#include "fd.h"
#include "byte-order.h"
#include "server-mem-types.h"
#include "authenticate.h"
#include "transport.h"

#define DEFAULT_BLOCK_SIZE         4194304   /* 4MB */
#define DEFAULT_VOLUME_FILE_PATH   CONFDIR "/glusterfs.vol"

typedef struct _server_state server_state_t;

struct _locker {
	struct list_head  lockers;
        char             *volume;
	loc_t             loc;
	fd_t             *fd;
	pid_t             pid;
};

struct _lock_table {
	struct list_head  file_lockers;
	struct list_head  dir_lockers;
	gf_lock_t         lock;
	size_t            count;
};


/* private structure per connection (transport object)
 * used as transport_t->xl_private
 */
struct _server_connection {
	struct list_head    list;
	char               *id;
	int                 ref;
        int                 active_transports;
	pthread_mutex_t     lock;
	char                disconnected;
	fdtable_t          *fdtable; 
	struct _lock_table *ltable;
	xlator_t           *bound_xl;
};

typedef struct _server_connection server_connection_t;


server_connection_t *
gf_server_connection_get (xlator_t *this, const char *id);

void
gf_server_connection_put (xlator_t *this, server_connection_t *conn);

int
gf_server_connection_cleanup (xlator_t *this, server_connection_t *conn);

struct _volfile_ctx {
        struct _volfile_ctx *next;
        char                *key;
        uint32_t             checksum;
};

typedef struct {
        struct _volfile_ctx *volfile;

	dict_t           *auth_modules;
	transport_t      *trans;
	int32_t           max_block_size;
	int32_t           inode_lru_limit;
	pthread_mutex_t   mutex;
	struct list_head  conns;
        gf_boolean_t      verify_volfile_checksum;
        gf_boolean_t      trace;
} server_conf_t;


typedef enum {
        RESOLVE_MUST = 1,
        RESOLVE_NOT,
        RESOLVE_MAY,
        RESOLVE_DONTCARE,
        RESOLVE_EXACT
} server_resolve_type_t;


struct resolve_comp {
        char      *basename;
        ino_t      ino;
        uint64_t   gen;
        inode_t   *inode;
};

typedef struct {
        server_resolve_type_t  type;
        uint64_t               fd_no;
        ino_t                  ino;
        uint64_t               gen;
        ino_t                  par;
        char                  *path;
        char                  *bname;
	char                  *resolved;
        int                    op_ret;
        int                    op_errno;
        loc_t                  deep_loc;
        struct resolve_comp   *components;
        int                    comp_count;
} server_resolve_t;


typedef int (*server_resume_fn_t) (call_frame_t *frame, xlator_t *bound_xl);

int
gf_resolve_and_resume (call_frame_t *frame, server_resume_fn_t fn);

struct _server_state {
	transport_t      *trans;
	xlator_t         *bound_xl;
        inode_table_t    *itable;

        server_resume_fn_t resume_fn;

	loc_t             loc;
	loc_t             loc2;
        server_resolve_t  resolve;
        server_resolve_t  resolve2;

        /* used within resolve_and_resume */
        loc_t            *loc_now;
        server_resolve_t *resolve_now;

        struct iatt       stbuf;
        int               valid;

	fd_t             *fd;
        dict_t           *params;
	int               flags;
        int               wbflags;
        struct iobuf     *iobuf;
        struct iobref    *iobref;

	size_t            size;
	off_t             offset;
	mode_t            mode;
	dev_t             dev;
	size_t            nr_count;
	int               cmd;
	int               type;
	char             *name;
	int               name_len;

	int               mask;
	char              is_revalidate;
	dict_t           *dict;
	struct gf_flock      flock;
        const char       *volume;
        dir_entry_t      *entry;
};


#endif