/* Copyright (c) 2008-2012 Red Hat, Inc. 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 #include #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; typedef enum { DEFAULT_REMOTE_FD = 0, FALLBACK_TO_ANON_FD = 1 } clnt_remote_fd_flags_t; #define CLIENT_GET_REMOTE_FD(xl, fd, flags, remote_fd, op_errno, label) \ do { \ int _ret = 0; \ _ret = client_get_remote_fd (xl, fd, flags, &remote_fd);\ if (_ret < 0) { \ op_errno = errno; \ goto label; \ } \ if (remote_fd == -1) { \ gf_log (xl->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 disconnect_err_logged; /* flag used to prevent excessive disconnect 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 timespec grace_ts; 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() */ /* set volume is the op which results in creating/re-using * the conn-id and is called once per connection, this remembers * how manytimes set_volume is called */ uint64_t setvol_count; } 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; void (*reopen_done) (struct _client_fd_ctx*, xlator_t *); struct list_head lock_list; /* List of all granted locks on this fd */ int32_t reopen_attempts; } 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; gf_boolean_t attempt_reopen; } 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 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); 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); void client_default_reopen_done (clnt_fd_ctx_t *fdctx, xlator_t *this); void client_attempt_reopen (fd_t *fd, xlator_t *this); int client_get_remote_fd (xlator_t *this, fd_t *fd, int flags, int64_t *remote_fd); int client_fd_fop_prepare_local (call_frame_t *frame, fd_t *fd, int64_t remote_fd); gf_boolean_t __is_fd_reopen_in_progress (clnt_fd_ctx_t *fdctx); #endif /* !_CLIENT_H */