summaryrefslogtreecommitdiffstats
path: root/xlators/protocol/client/src/client.h
blob: 9241eefa3aa706ee013ed8ab7627e8ff69dba1d1 (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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/*
  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.
*/

#ifndef _CLIENT_H
#define _CLIENT_H

#include <pthread.h>
#include <stdint.h>

#include "rpc-clnt.h"
#include "list.h"
#include "inode.h"
#include "client-mem-types.h"
#include "protocol-common.h"
#include "glusterfs3.h"
#include "fd-lk.h"

/* FIXME: Needs to be defined in a common file */
#define CLIENT_CMD_CONNECT    "trusted.glusterfs.client-connect"
#define CLIENT_CMD_DISCONNECT "trusted.glusterfs.client-disconnect"
#define CLIENT_DUMP_LOCKS     "trusted.glusterfs.clientlk-dump"
#define GF_MAX_SOCKET_WINDOW_SIZE  (1 * GF_UNIT_MB)
#define GF_MIN_SOCKET_WINDOW_SIZE  (0)

typedef enum {
        GF_LK_HEAL_IN_PROGRESS,
        GF_LK_HEAL_DONE,
} lk_heal_state_t;

#define CLIENT_GET_REMOTE_FD(conf, fd, remote_fd, op_errno, label)      \
        do {                                                            \
                clnt_fd_ctx_t      *fdctx    = NULL;                    \
                pthread_mutex_lock (&conf->lock);                       \
                {                                                       \
                        fdctx = this_fd_get_ctx (fd, THIS);             \
                }                                                       \
                pthread_mutex_unlock (&conf->lock);                     \
                if (!fdctx) {                                           \
                        remote_fd = -2;                                 \
                } else {                                                \
                        remote_fd = fdctx->remote_fd;                   \
                }                                                       \
                if (remote_fd == -1) {                                  \
                        gf_log (THIS->name, GF_LOG_WARNING, " (%s) "    \
                                "remote_fd is -1. EBADFD",              \
                                uuid_utoa (fd->inode->gfid));           \
                        op_errno = EBADFD;                              \
                        goto label;                                     \
                }                                                       \
        } while (0);

#define CLIENT_STACK_UNWIND(op, frame, params ...) do {             \
                clnt_local_t *__local = frame->local;               \
                frame->local = NULL;                                \
                STACK_UNWIND_STRICT (op, frame, params);            \
                client_local_wipe (__local);                        \
        } while (0)


struct clnt_options {
        char *remote_subvolume;
        int   ping_timeout;
};

typedef struct clnt_conf {
        struct rpc_clnt       *rpc;
        struct clnt_options    opt;
        struct rpc_clnt_config rpc_conf;
	struct list_head       saved_fds;
        pthread_mutex_t        lock;
        int                    connecting;
        int                    connected;

        rpc_clnt_prog_t       *fops;
        rpc_clnt_prog_t       *mgmt;
        rpc_clnt_prog_t       *handshake;
        rpc_clnt_prog_t       *dump;

        uint64_t               reopen_fd_count; /* Count of fds reopened after a
                                                   connection is established */
        gf_lock_t              rec_lock;
        int                    skip_notify;

        int                    last_sent_event; /* Flag used to make sure we are
                                                   not repeating the same event
                                                   which was sent earlier */
        char                   portmap_err_logged; /* flag used to prevent
                                                      excessive logging */
        char                   need_different_port; /* flag used to change the
                                                       portmap path in case of
                                                       'tcp,rdma' on server */
        gf_boolean_t           lk_heal;
        uint16_t               lk_version; /* this variable is used to distinguish
                                              client-server transaction while
                                              performing lock healing */
        struct timeval         grace_tv;
        gf_timer_t            *grace_timer;
        gf_boolean_t           grace_timer_needed; /* The state of this flag will
                                                      be used to decide whether
                                                      a new grace-timer must be
                                                      registered or not. False
                                                      means dont register, true
                                                      means register */
        char                   parent_down;
	gf_boolean_t           quick_reconnect; /* When reconnecting after
						   portmap query, do not let
						   the reconnection happen after
						   the usual 3-second wait
						*/
        gf_boolean_t           filter_o_direct; /* if set, filter O_DIRECT from
                                                   the flags list of open() */
} clnt_conf_t;

typedef struct _client_fd_ctx {
        struct list_head  sfd_pos;      /*  Stores the reference to this
                                            fd's position in the saved_fds list.
                                        */
        int64_t           remote_fd;
        char              is_dir;
        char              released;
        int32_t           flags;
        fd_lk_ctx_t      *lk_ctx;
        pthread_mutex_t   mutex;
        lk_heal_state_t   lk_heal_state;
        uuid_t            gfid;
        struct list_head  lock_list;     /* List of all granted locks on this fd */
} clnt_fd_ctx_t;

typedef struct _client_posix_lock {
        fd_t              *fd;            /* The fd on which the lk operation was made */

        struct gf_flock    user_flock;    /* the flock supplied by the user */
        off_t              fl_start;
        off_t              fl_end;
        short              fl_type;
        int32_t            cmd;           /* the cmd for the lock call */
        gf_lkowner_t       owner; /* lock owner from fuse */
        struct list_head   list;          /* reference used to add to the fdctx list of locks */
} client_posix_lock_t;

typedef struct client_local {
        loc_t                loc;
        loc_t                loc2;
        fd_t                *fd;
        clnt_fd_ctx_t       *fdctx;
        uint32_t             flags;
        struct iobref       *iobref;

        client_posix_lock_t *client_lock;
        gf_lkowner_t         owner;
        int32_t              cmd;
        struct list_head     lock_list;
        pthread_mutex_t      mutex;
        char           *name;
} clnt_local_t;

typedef struct client_args {
        loc_t              *loc;
        fd_t               *fd;
        const char         *linkname;
        struct iobref      *iobref;
        struct iovec       *vector;
        dict_t             *xattr;
        struct iatt        *stbuf;
        loc_t              *oldloc;
        loc_t              *newloc;
        const char         *name;
        struct gf_flock    *flock;
        const char         *volume;
        const char         *basename;
        off_t               offset;
        int32_t             mask;
        int32_t             cmd;
        size_t              size;
        mode_t              mode;
        dev_t               rdev;
        int32_t             flags;
        int32_t             count;
        int32_t             datasync;
        entrylk_cmd         cmd_entrylk;
        entrylk_type        type;
        gf_xattrop_flags_t  optype;
        int32_t             valid;
        int32_t             len;

        mode_t              umask;
        dict_t             *xdata;
} clnt_args_t;

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

clnt_fd_ctx_t *this_fd_get_ctx (fd_t *file, xlator_t *this);
clnt_fd_ctx_t *this_fd_del_ctx (fd_t *file, xlator_t *this);
void this_fd_set_ctx (fd_t *file, xlator_t *this, loc_t *loc,
                      clnt_fd_ctx_t *ctx);

int client_local_wipe (clnt_local_t *local);
int client_submit_request (xlator_t *this, void *req,
                           call_frame_t *frame, rpc_clnt_prog_t *prog,
                           int procnum, fop_cbk_fn_t cbk,
                           struct iobref *iobref,
                           struct iovec *rsphdr, int rsphdr_count,
                           struct iovec *rsp_payload, int rsp_count,
                           struct iobref *rsp_iobref, xdrproc_t xdrproc);

int protocol_client_reopendir (xlator_t *this, clnt_fd_ctx_t *fdctx);
int protocol_client_reopen (xlator_t *this, clnt_fd_ctx_t *fdctx);

int unserialize_rsp_dirent (struct gfs3_readdir_rsp *rsp, gf_dirent_t *entries);
int unserialize_rsp_direntp (xlator_t *this, fd_t *fd,
                             struct gfs3_readdirp_rsp *rsp, gf_dirent_t *entries);

int clnt_readdir_rsp_cleanup (gfs3_readdir_rsp *rsp);
int clnt_readdirp_rsp_cleanup (gfs3_readdirp_rsp *rsp);
int client_attempt_lock_recovery (xlator_t *this, clnt_fd_ctx_t *fdctx);
int32_t delete_granted_locks_owner (fd_t *fd, gf_lkowner_t *owner);
int client_add_lock_for_recovery (fd_t *fd, struct gf_flock *flock,
                                  gf_lkowner_t *owner, int32_t cmd);
uint64_t decrement_reopen_fd_count (xlator_t *this, clnt_conf_t *conf);
int32_t delete_granted_locks_fd (clnt_fd_ctx_t *fdctx);
int32_t client_cmd_to_gf_cmd (int32_t cmd, int32_t *gf_cmd);
void client_save_number_fds (clnt_conf_t *conf, int count);
int dump_client_locks (inode_t *inode);
int client_notify_parents_child_up (xlator_t *this);
int32_t is_client_dump_locks_cmd (char *name);
int32_t client_dump_locks (char *name, inode_t *inode,
                           dict_t *dict);
int client_fdctx_destroy (xlator_t *this, clnt_fd_ctx_t *fdctx);

uint32_t client_get_lk_ver (clnt_conf_t *conf);

int32_t client_type_to_gf_type (short l_type);

int client_mark_fd_bad (xlator_t *this);

int client_set_lk_version (xlator_t *this);

int client_fd_lk_list_empty (fd_lk_ctx_t *lk_ctx, gf_boolean_t use_try_lock);
#endif /* !_CLIENT_H */