summaryrefslogtreecommitdiffstats
path: root/xlators/protocol/server/src/server.h
blob: d552940be2a410dcf258e25111da2984087a82df (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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
/*
  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 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_H
#define _SERVER_H

#include <pthread.h>

#include "rpcsvc.h"

#include "fd.h"
#include "protocol-common.h"
#include "server-mem-types.h"
#include "glusterfs3.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;
        uint64_t          owner;
        pid_t             pid;
};

struct _lock_table {
        struct list_head  inodelk_lockers;
        struct list_head  entrylk_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;
        xlator_t           *this;
};

typedef struct _server_connection server_connection_t;


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

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

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

int server_null (rpcsvc_request_t *req);

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

struct server_conf {
        rpcsvc_t               *rpc;
        struct rpcsvc_config    rpc_conf;
        int                     inode_lru_limit;
        gf_boolean_t            verify_volfile;
        gf_boolean_t            trace;
        char                   *conf_dir;
        struct _volfile_ctx    *volfile;

        dict_t                 *auth_modules;
        pthread_mutex_t         mutex;
        struct list_head        conns;
        struct list_head        xprt_list;
};
typedef struct server_conf 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;
        u_char                 gfid[16];
        u_char                 pargfid[16];
        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
resolve_and_resume (call_frame_t *frame, server_resume_fn_t fn);

struct _server_state {
        server_connection_t  *conn;
        rpc_transport_t      *xprt;
        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 iovec      payload_vector[MAX_IOVEC];
        int               payload_count;
        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;
};

extern struct rpcsvc_program gluster_handshake_prog;
extern struct rpcsvc_program glusterfs3_1_fop_prog;
extern struct rpcsvc_program gluster_ping_prog;

typedef ssize_t (*gfs_serialize_t) (struct iovec outmsg, void *args);

int
server_submit_reply (call_frame_t *frame, rpcsvc_request_t *req, void *arg,
                     struct iovec *payload, int payloadcount,
                     struct iobref *iobref, gfs_serialize_t sfunc);

int xdr_to_glusterfs_req (rpcsvc_request_t *req, void *arg,
                          gfs_serialize_t sfunc);

int gf_server_check_setxattr_cmd (call_frame_t *frame, dict_t *dict);
int gf_server_check_getxattr_cmd (call_frame_t *frame, const char *name);

#endif /* !_SERVER_H */