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/*
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 "authenticate.h"
#include "fd.h"
#include "byte-order.h"
#define DEFAULT_BLOCK_SIZE 4194304 /* 4MB */
#define DEFAULT_VOLUME_FILE_PATH CONFDIR "/glusterfs.vol"
#define TRANSPORTS_PER_SERVER_CONN 2
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;
transport_t *transports[TRANSPORTS_PER_SERVER_CONN];
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 *
server_connection_get (xlator_t *this, const char *id, transport_t *trans);
void
server_connection_put (xlator_t *this, server_connection_t *conn);
int
server_connection_destroy (xlator_t *this, server_connection_t *conn);
int
server_connection_cleanup (xlator_t *this, server_connection_t *conn, transport_t *trans);
int
server_nop_cbk (call_frame_t *frame, void *cookie,
xlator_t *this, int32_t op_ret, int32_t op_errno);
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;
char *subvol_list;
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
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 stat stbuf;
int valid;
fd_t *fd;
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 flock flock;
const char *volume;
dir_entry_t *entry;
};
#endif
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