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/*
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_T_H
#define _CLIENT_T_H
#include "glusterfs/glusterfs.h"
#include "glusterfs/locking.h" /* for gf_lock_t, not included by glusterfs.h */
#include "glusterfs/atomic.h" /* for gf_atomic_t */
/* auth_data structure is required by RPC layer. But as it is also used in
* client_t structure validation, comparision, it is critical that it is defined
* in the larger scope of libglusterfs, instead of libgfrpc. With this change,
* even RPC will use this structure */
#define GF_CLIENTT_AUTH_BYTES 400
typedef struct client_auth_data {
int flavour;
int datalen;
char authdata[GF_CLIENTT_AUTH_BYTES];
} client_auth_data_t;
struct client_ctx {
void *ctx_key;
void *ctx_value;
};
typedef struct _client {
struct {
/* e.g. protocol/server stashes its ctx here */
gf_lock_t lock;
unsigned short count;
struct client_ctx *ctx;
} scratch_ctx;
gf_atomic_t bind;
gf_atomic_t count;
xlator_t *bound_xl;
xlator_t *this;
int tbl_index;
char *client_uid;
char *client_name;
struct {
int flavour;
size_t len;
char *data;
char *username;
char *passwd;
} auth;
/* subdir_mount */
char *subdir_mount;
inode_t *subdir_inode;
uuid_t subdir_gfid;
int32_t opversion;
/* Variable to save fd_count for detach brick */
gf_atomic_t fd_cnt;
} client_t;
#define GF_CLIENTCTX_INITIAL_SIZE 8
struct client_table_entry {
client_t *client;
int next_free;
};
typedef struct client_table_entry cliententry_t;
struct clienttable {
unsigned int max_clients;
gf_lock_t lock;
cliententry_t *cliententries;
int first_free;
client_t *local;
};
typedef struct clienttable clienttable_t;
#define GF_CLIENTTABLE_INITIAL_SIZE 128
/* Signifies no more entries in the client table. */
#define GF_CLIENTTABLE_END -1
/* This is used to invalidate
* the next_free value in an cliententry that has been allocated
*/
#define GF_CLIENTENTRY_ALLOCATED -2
void
gf_client_put(client_t *client, gf_boolean_t *detached);
clienttable_t *
gf_clienttable_alloc(void);
client_t *
gf_client_ref(client_t *client);
void
gf_client_unref(client_t *client);
int
gf_client_dump_fdtable_to_dict(xlator_t *this, dict_t *dict);
int
gf_client_dump_fdtable(xlator_t *this);
int
gf_client_dump_inodes_to_dict(xlator_t *this, dict_t *dict);
int
gf_client_dump_inodes(xlator_t *this);
void *
client_ctx_set(client_t *client, void *key, void *value);
int
client_ctx_get(client_t *client, void *key, void **value);
int
client_ctx_del(client_t *client, void *key, void **value);
void
client_ctx_dump(client_t *client, char *prefix);
int
gf_client_dump_fdtables_to_dict(xlator_t *this, dict_t *dict);
int
gf_client_dump_fdtables(xlator_t *this);
int
gf_client_dump_inodes_to_dict(xlator_t *this, dict_t *dict);
int
gf_client_dump_inodes(xlator_t *this);
int
gf_client_disconnect(client_t *client);
client_t *
gf_client_get(xlator_t *this, client_auth_data_t *cred, char *client_uid,
char *subdir_mount);
#endif /* _CLIENT_T_H */
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