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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_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;
} 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;
inode_t *inode;
uint64_t ino;
uint64_t gen;
char is_dir;
char released;
int32_t flags;
int32_t wbflags;
fd_lk_ctx_t *lk_ctx;
pthread_mutex_t mutex;
lk_heal_state_t lk_heal_state;
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;
uint32_t wbflags;
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 */
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