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/*
Copyright (c) 2010-2011 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"
#include "timer.h"
#define DEFAULT_BLOCK_SIZE 4194304 /* 4MB */
#define DEFAULT_VOLUME_FILE_PATH CONFDIR "/glusterfs.vol"
#define GF_MAX_SOCKET_WINDOW_SIZE (1 * GF_UNIT_MB)
#define GF_MIN_SOCKET_WINDOW_SIZE (0)
typedef enum {
INTERNAL_LOCKS = 1,
POSIX_LOCKS = 2,
} server_lock_flags_t;
typedef struct _server_state server_state_t;
struct _locker {
struct list_head lockers;
char *volume;
loc_t loc;
fd_t *fd;
gf_lkowner_t owner;
pid_t pid;
};
struct _lock_table {
struct list_head inodelk_lockers;
struct list_head entrylk_lockers;
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 bind_ref;
pthread_mutex_t lock;
fdtable_t *fdtable;
struct _lock_table *ltable;
gf_timer_t *timer;
xlator_t *bound_xl;
xlator_t *this;
uint32_t lk_version;
};
typedef struct _server_connection server_connection_t;
server_connection_t *
server_connection_get (xlator_t *this, const char *id);
server_connection_t *
server_connection_put (xlator_t *this, server_connection_t *conn,
gf_boolean_t *detached);
server_connection_t*
server_conn_unref (server_connection_t *conn);
server_connection_t*
server_conn_ref (server_connection_t *conn);
int
server_connection_cleanup (xlator_t *this, server_connection_t *conn,
int32_t flags);
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;
gf_boolean_t lk_heal; /* If true means lock self
heal is on else off. */
char *conf_dir;
struct _volfile_ctx *volfile;
struct timeval grace_tv;
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;
inode_t *inode;
};
typedef struct {
server_resolve_type_t type;
int64_t fd_no;
u_char gfid[16];
u_char pargfid[16];
char *path;
char *bname;
int op_ret;
int op_errno;
loc_t resolve_loc;
} 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;
int32_t 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;
dict_t *xdata;
mode_t umask;
};
extern struct rpcsvc_program gluster_handshake_prog;
extern struct rpcsvc_program glusterfs3_3_fop_prog;
extern struct rpcsvc_program gluster_ping_prog;
int
server_submit_reply (call_frame_t *frame, rpcsvc_request_t *req, void *arg,
struct iovec *payload, int payloadcount,
struct iobref *iobref, xdrproc_t xdrproc);
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 */
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