/*
ctdb database library
Copyright (C) Andrew Tridgell 2006
This program 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.
This program 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 .
*/
#ifndef _CTDB_PRIVATE_H
#define _CTDB_PRIVATE_H
#include "ctdb.h"
#include
#include
/* location of daemon socket */
#define CTDB_PATH "/tmp/ctdb.socket"
/* default ctdb port number */
#define CTDB_PORT 4379
/* we must align packets to ensure ctdb works on all architectures (eg. sparc) */
#define CTDB_DS_ALIGNMENT 8
#define CTDB_NULL_FUNC 0xFF000001
#define CTDB_FETCH_FUNC 0xFF000002
/*
a tcp connection description
*/
struct ctdb_tcp_connection {
struct sockaddr_in saddr;
struct sockaddr_in daddr;
};
/* the wire representation for a tcp tickle array */
struct ctdb_tcp_wire_array {
uint32_t num;
struct ctdb_tcp_connection connections[1];
};
/* the list of tcp tickles used by get/set tcp tickle list */
struct ctdb_control_tcp_tickle_list {
uint32_t vnn;
struct ctdb_tcp_wire_array tickles;
};
/*
array of tcp connections
*/
struct ctdb_tcp_array {
uint32_t num;
struct ctdb_tcp_connection *connections;
};
/* all tunable variables go in here */
struct ctdb_tunable {
uint32_t max_redirect_count;
uint32_t seqnum_frequency;
uint32_t control_timeout;
uint32_t traverse_timeout;
uint32_t keepalive_interval;
uint32_t keepalive_limit;
uint32_t max_lacount;
uint32_t recover_timeout;
uint32_t recover_interval;
uint32_t election_timeout;
uint32_t takeover_timeout;
uint32_t monitor_interval;
uint32_t tickle_update_interval;
uint32_t script_timeout;
uint32_t recovery_grace_period;
uint32_t recovery_ban_period;
uint32_t database_hash_size;
uint32_t rerecovery_timeout;
};
/*
an installed ctdb remote call
*/
struct ctdb_registered_call {
struct ctdb_registered_call *next, *prev;
uint32_t id;
ctdb_fn_t fn;
};
/*
this address structure might need to be generalised later for some
transports
*/
struct ctdb_address {
const char *address;
int port;
};
/*
check a vnn is valid
*/
#define ctdb_validate_vnn(ctdb, vnn) (((uint32_t)(vnn)) < (ctdb)->num_nodes)
/* called from the queue code when a packet comes in. Called with data==NULL
on error */
typedef void (*ctdb_queue_cb_fn_t)(uint8_t *data, size_t length,
void *private_data);
/* used for callbacks in ctdb_control requests */
typedef void (*ctdb_control_callback_fn_t)(struct ctdb_context *,
int32_t status, TDB_DATA data,
const char *errormsg,
void *private_data);
/*
structure describing a connected client in the daemon
*/
struct ctdb_client {
struct ctdb_context *ctdb;
int fd;
struct ctdb_queue *queue;
uint32_t client_id;
pid_t pid;
struct ctdb_tcp_list *tcp_list;
};
/*
state associated with one node
*/
struct ctdb_node {
struct ctdb_context *ctdb;
struct ctdb_address address;
const char *name; /* for debug messages */
void *private_data; /* private to transport */
uint32_t vnn;
#define NODE_FLAGS_DISCONNECTED 0x00000001 /* node isn't connected */
#define NODE_FLAGS_UNHEALTHY 0x00000002 /* monitoring says node is unhealthy */
#define NODE_FLAGS_PERMANENTLY_DISABLED 0x00000004 /* administrator has disabled node */
#define NODE_FLAGS_BANNED 0x00000008 /* recovery daemon has banned the node */
#define NODE_FLAGS_DISABLED (NODE_FLAGS_UNHEALTHY|NODE_FLAGS_PERMANENTLY_DISABLED)
#define NODE_FLAGS_INACTIVE (NODE_FLAGS_DISCONNECTED|NODE_FLAGS_BANNED)
uint32_t flags;
/* used by the dead node monitoring */
uint32_t dead_count;
uint32_t rx_cnt;
uint32_t tx_cnt;
/* a list of controls pending to this node, so we can time them out quickly
if the node becomes disconnected */
struct daemon_control_state *pending_controls;
/* the public address of this node, if known */
const char *public_address;
uint8_t public_netmask_bits;
/* the node number that has taken over this nodes public address, if any.
If not taken over, then set to -1 */
int32_t takeover_vnn;
/* List of clients to tickle for this public address */
struct ctdb_tcp_array *tcp_array;
/* whether we need to update the other nodes with changes to our list
of connected clients */
bool tcp_update_needed;
};
/*
transport specific methods
*/
struct ctdb_methods {
int (*initialise)(struct ctdb_context *); /* initialise transport structures */
int (*start)(struct ctdb_context *); /* start protocol processing */
int (*add_node)(struct ctdb_node *); /* setup a new node */
int (*queue_pkt)(struct ctdb_node *, uint8_t *data, uint32_t length);
void *(*allocate_pkt)(TALLOC_CTX *mem_ctx, size_t );
void (*shutdown)(struct ctdb_context *); /* shutdown transport */
};
/*
transport calls up to the ctdb layer
*/
struct ctdb_upcalls {
/* recv_pkt is called when a packet comes in */
void (*recv_pkt)(struct ctdb_context *, uint8_t *data, uint32_t length);
/* node_dead is called when an attempt to send to a node fails */
void (*node_dead)(struct ctdb_node *);
/* node_connected is called when a connection to a node is established */
void (*node_connected)(struct ctdb_node *);
};
/* list of message handlers - needs to be changed to a more efficient data
structure so we can find a message handler given a srvid quickly */
struct ctdb_message_list {
struct ctdb_context *ctdb;
struct ctdb_message_list *next, *prev;
uint64_t srvid;
ctdb_message_fn_t message_handler;
void *message_private;
};
/* additional data required for the daemon mode */
struct ctdb_daemon_data {
int sd;
char *name;
struct ctdb_queue *queue;
};
/*
ctdb status information
*/
struct ctdb_statistics {
uint32_t num_clients;
uint32_t frozen;
uint32_t recovering;
uint32_t client_packets_sent;
uint32_t client_packets_recv;
uint32_t node_packets_sent;
uint32_t node_packets_recv;
uint32_t keepalive_packets_sent;
uint32_t keepalive_packets_recv;
struct {
uint32_t req_call;
uint32_t reply_call;
uint32_t req_dmaster;
uint32_t reply_dmaster;
uint32_t reply_error;
uint32_t req_message;
uint32_t req_control;
uint32_t reply_control;
} node;
struct {
uint32_t req_call;
uint32_t req_message;
uint32_t req_control;
} client;
struct {
uint32_t call;
uint32_t control;
uint32_t traverse;
} timeouts;
uint32_t total_calls;
uint32_t pending_calls;
uint32_t lockwait_calls;
uint32_t pending_lockwait_calls;
uint32_t memory_used;
uint32_t __last_counter; /* hack for control_statistics_all */
uint32_t max_hop_count;
double max_call_latency;
double max_lockwait_latency;
};
/* table that contains the mapping between a hash value and lmaster
*/
struct ctdb_vnn_map {
uint32_t generation;
uint32_t size;
uint32_t *map;
};
/*
a wire representation of the vnn map
*/
struct ctdb_vnn_map_wire {
uint32_t generation;
uint32_t size;
uint32_t map[1];
};
/* a structure that contains the elements required for the write record
control
*/
struct ctdb_write_record {
uint32_t dbid;
uint32_t keylen;
uint32_t datalen;
unsigned char blob[1];
};
enum ctdb_freeze_mode {CTDB_FREEZE_NONE, CTDB_FREEZE_PENDING, CTDB_FREEZE_FROZEN};
#define CTDB_MONITORING_ACTIVE 0
#define CTDB_MONITORING_DISABLED 1
/* information about IP takeover */
struct ctdb_takeover {
bool enabled;
const char *interface;
const char *event_script;
TALLOC_CTX *last_ctx;
};
/* main state of the ctdb daemon */
struct ctdb_context {
struct event_context *ev;
uint32_t recovery_mode;
uint32_t monitoring_mode;
TALLOC_CTX *monitor_context;
TALLOC_CTX *tickle_update_context;
struct ctdb_tunable tunable;
enum ctdb_freeze_mode freeze_mode;
struct ctdb_freeze_handle *freeze_handle;
struct ctdb_address address;
const char *name;
const char *db_directory;
const char *transport;
const char *logfile;
char *node_list_file;
char *recovery_lock_file;
int recovery_lock_fd;
uint32_t vnn; /* our own vnn */
uint32_t num_nodes;
uint32_t num_connected;
unsigned flags;
struct idr_context *idr;
uint16_t idr_cnt;
struct ctdb_node **nodes; /* array of nodes in the cluster - indexed by vnn */
char *err_msg;
const struct ctdb_methods *methods; /* transport methods */
const struct ctdb_upcalls *upcalls; /* transport upcalls */
void *private_data; /* private to transport */
struct ctdb_db_context *db_list;
struct ctdb_message_list *message_list;
struct ctdb_daemon_data daemon;
struct ctdb_statistics statistics;
struct ctdb_vnn_map *vnn_map;
uint32_t num_clients;
uint32_t recovery_master;
struct ctdb_call_state *pending_calls;
struct ctdb_takeover takeover;
struct ctdb_client_ip *client_ip_list;
bool do_setsched;
void *saved_scheduler_param;
struct ctdb_kill_tcp *killtcp;
};
struct ctdb_db_context {
struct ctdb_db_context *next, *prev;
struct ctdb_context *ctdb;
uint32_t db_id;
const char *db_name;
const char *db_path;
struct tdb_wrap *ltdb;
struct ctdb_registered_call *calls; /* list of registered calls */
uint32_t seqnum;
struct timed_event *te;
};
#define CTDB_NO_MEMORY(ctdb, p) do { if (!(p)) { \
DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
return -1; }} while (0)
#define CTDB_NO_MEMORY_VOID(ctdb, p) do { if (!(p)) { \
DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
}} while (0)
#define CTDB_NO_MEMORY_NULL(ctdb, p) do { if (!(p)) { \
DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
ctdb_set_error(ctdb, "Out of memory at %s:%d", __FILE__, __LINE__); \
return NULL; }} while (0)
#define CTDB_NO_MEMORY_FATAL(ctdb, p) do { if (!(p)) { \
DEBUG(0,("Out of memory for %s at %s\n", #p, __location__)); \
ctdb_fatal(ctdb, "Out of memory in " __location__ ); \
}} while (0)
/*
the extended header for records in the ltdb
*/
struct ctdb_ltdb_header {
uint64_t rsn;
uint32_t dmaster;
uint32_t laccessor;
uint32_t lacount;
};
enum ctdb_controls {CTDB_CONTROL_PROCESS_EXISTS = 0,
CTDB_CONTROL_STATISTICS = 1,
/* #2 removed */
CTDB_CONTROL_PING = 3,
CTDB_CONTROL_GETDBPATH = 4,
CTDB_CONTROL_GETVNNMAP = 5,
CTDB_CONTROL_SETVNNMAP = 6,
CTDB_CONTROL_GET_DEBUG = 7,
CTDB_CONTROL_SET_DEBUG = 8,
CTDB_CONTROL_GET_DBMAP = 9,
CTDB_CONTROL_GET_NODEMAP = 10,
CTDB_CONTROL_SET_DMASTER = 11,
/* #12 removed */
CTDB_CONTROL_PULL_DB = 13,
CTDB_CONTROL_PUSH_DB = 14,
CTDB_CONTROL_GET_RECMODE = 15,
CTDB_CONTROL_SET_RECMODE = 16,
CTDB_CONTROL_STATISTICS_RESET = 17,
CTDB_CONTROL_DB_ATTACH = 18,
CTDB_CONTROL_SET_CALL = 19,
CTDB_CONTROL_TRAVERSE_START = 20,
CTDB_CONTROL_TRAVERSE_ALL = 21,
CTDB_CONTROL_TRAVERSE_DATA = 22,
CTDB_CONTROL_REGISTER_SRVID = 23,
CTDB_CONTROL_DEREGISTER_SRVID = 24,
CTDB_CONTROL_GET_DBNAME = 25,
CTDB_CONTROL_ENABLE_SEQNUM = 26,
CTDB_CONTROL_UPDATE_SEQNUM = 27,
/* #28 removed */
CTDB_CONTROL_DUMP_MEMORY = 29,
CTDB_CONTROL_GET_PID = 30,
CTDB_CONTROL_GET_RECMASTER = 31,
CTDB_CONTROL_SET_RECMASTER = 32,
CTDB_CONTROL_FREEZE = 33,
CTDB_CONTROL_THAW = 34,
CTDB_CONTROL_GET_VNN = 35,
CTDB_CONTROL_SHUTDOWN = 36,
CTDB_CONTROL_GET_MONMODE = 37,
CTDB_CONTROL_SET_MONMODE = 38,
CTDB_CONTROL_MAX_RSN = 39,
CTDB_CONTROL_SET_RSN_NONEMPTY = 40,
CTDB_CONTROL_DELETE_LOW_RSN = 41,
CTDB_CONTROL_TAKEOVER_IP = 42,
CTDB_CONTROL_RELEASE_IP = 43,
CTDB_CONTROL_TCP_CLIENT = 44,
CTDB_CONTROL_TCP_ADD = 45,
CTDB_CONTROL_TCP_REMOVE = 46,
CTDB_CONTROL_STARTUP = 47,
CTDB_CONTROL_SET_TUNABLE = 48,
CTDB_CONTROL_GET_TUNABLE = 49,
CTDB_CONTROL_LIST_TUNABLES = 50,
CTDB_CONTROL_GET_PUBLIC_IPS = 51,
CTDB_CONTROL_MODIFY_FLAGS = 52,
CTDB_CONTROL_GET_ALL_TUNABLES = 53,
CTDB_CONTROL_KILL_TCP = 54,
CTDB_CONTROL_GET_TCP_TICKLE_LIST = 55,
CTDB_CONTROL_SET_TCP_TICKLE_LIST = 56,
};
/*
structure passed in ctdb_control_set_rsn_nonempty
*/
struct ctdb_control_set_rsn_nonempty {
uint32_t db_id;
uint64_t rsn;
};
/*
structure passed in ctdb_control_delete_low_rsn
*/
struct ctdb_control_delete_low_rsn {
uint32_t db_id;
uint64_t rsn;
};
/*
structure passed in set_call control
*/
struct ctdb_control_set_call {
uint32_t db_id;
ctdb_fn_t fn;
uint32_t id;
};
/*
struct for tcp_client control
*/
struct ctdb_control_tcp {
struct sockaddr_in src;
struct sockaddr_in dest;
};
/*
struct for kill_tcp control
*/
struct ctdb_control_killtcp {
struct sockaddr_in src;
struct sockaddr_in dst;
};
/*
struct for tcp_add and tcp_remove controls
*/
struct ctdb_control_tcp_vnn {
uint32_t vnn;
struct sockaddr_in src;
struct sockaddr_in dest;
};
/*
structure used for CTDB_SRVID_NODE_FLAGS_CHANGED
*/
struct ctdb_node_flag_change {
uint32_t vnn;
uint32_t flags;
};
/*
structure to change flags on a node
*/
struct ctdb_node_modflags {
uint32_t set;
uint32_t clear;
};
/*
struct for admin setting a ban
*/
struct ctdb_ban_info {
uint32_t vnn;
uint32_t ban_time;
};
enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};
#define CTDB_LMASTER_ANY 0xffffffff
/*
state of a in-progress ctdb call
*/
struct ctdb_call_state {
struct ctdb_call_state *next, *prev;
enum call_state state;
uint32_t reqid;
struct ctdb_req_call *c;
struct ctdb_db_context *ctdb_db;
const char *errmsg;
struct ctdb_call call;
uint32_t generation;
struct {
void (*fn)(struct ctdb_call_state *);
void *private_data;
} async;
};
/* used for fetch_lock */
struct ctdb_fetch_handle {
struct ctdb_db_context *ctdb_db;
TDB_DATA key;
TDB_DATA *data;
struct ctdb_ltdb_header header;
};
/*
operation IDs
*/
enum ctdb_operation {
CTDB_REQ_CALL = 0,
CTDB_REPLY_CALL = 1,
CTDB_REQ_DMASTER = 2,
CTDB_REPLY_DMASTER = 3,
CTDB_REPLY_ERROR = 4,
CTDB_REQ_MESSAGE = 5,
/* #6 removed */
CTDB_REQ_CONTROL = 7,
CTDB_REPLY_CONTROL = 8,
CTDB_REQ_KEEPALIVE = 9,
};
#define CTDB_MAGIC 0x43544442 /* CTDB */
#define CTDB_VERSION 1
/*
packet structures
*/
struct ctdb_req_header {
uint32_t length;
uint32_t ctdb_magic;
uint32_t ctdb_version;
uint32_t generation;
uint32_t operation;
uint32_t destnode;
uint32_t srcnode;
uint32_t reqid;
};
struct ctdb_req_call {
struct ctdb_req_header hdr;
uint32_t flags;
uint32_t db_id;
uint32_t callid;
uint32_t hopcount;
uint32_t keylen;
uint32_t calldatalen;
uint8_t data[1]; /* key[] followed by calldata[] */
};
struct ctdb_reply_call {
struct ctdb_req_header hdr;
uint32_t status;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_reply_error {
struct ctdb_req_header hdr;
uint32_t status;
uint32_t msglen;
uint8_t msg[1];
};
struct ctdb_req_dmaster {
struct ctdb_req_header hdr;
uint32_t db_id;
uint64_t rsn;
uint32_t dmaster;
uint32_t keylen;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_reply_dmaster {
struct ctdb_req_header hdr;
uint32_t db_id;
uint64_t rsn;
uint32_t keylen;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_req_message {
struct ctdb_req_header hdr;
uint64_t srvid;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_req_getdbpath {
struct ctdb_req_header hdr;
uint32_t db_id;
};
struct ctdb_reply_getdbpath {
struct ctdb_req_header hdr;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_req_control {
struct ctdb_req_header hdr;
uint32_t opcode;
uint64_t srvid;
uint32_t client_id;
#define CTDB_CTRL_FLAG_NOREPLY 1
uint32_t flags;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_reply_control {
struct ctdb_req_header hdr;
int32_t status;
uint32_t datalen;
uint32_t errorlen;
uint8_t data[1];
};
struct ctdb_req_keepalive {
struct ctdb_req_header hdr;
};
/* internal prototypes */
void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
bool ctdb_same_address(struct ctdb_address *a1, struct ctdb_address *a2);
int ctdb_parse_address(struct ctdb_context *ctdb,
TALLOC_CTX *mem_ctx, const char *str,
struct ctdb_address *address);
uint32_t ctdb_hash(const TDB_DATA *key);
uint32_t ctdb_hash_string(const char *str);
void ctdb_request_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
void ctdb_request_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
void ctdb_request_message(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
void ctdb_reply_dmaster(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
void ctdb_reply_call(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
void ctdb_reply_error(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
TDB_DATA key, struct ctdb_ltdb_header *header,
TALLOC_CTX *mem_ctx, TDB_DATA *data);
int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
struct ctdb_ltdb_header *header, TDB_DATA data);
void ctdb_queue_packet(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
int ctdb_ltdb_lock_requeue(struct ctdb_db_context *ctdb_db,
TDB_DATA key, struct ctdb_req_header *hdr,
void (*recv_pkt)(void *, struct ctdb_req_header *),
void *recv_context, bool ignore_generation);
int ctdb_ltdb_lock_fetch_requeue(struct ctdb_db_context *ctdb_db,
TDB_DATA key, struct ctdb_ltdb_header *header,
struct ctdb_req_header *hdr, TDB_DATA *data,
void (*recv_pkt)(void *, struct ctdb_req_header *),
void *recv_context, bool ignore_generation);
void ctdb_input_pkt(struct ctdb_context *ctdb, struct ctdb_req_header *);
struct ctdb_call_state *ctdb_call_local_send(struct ctdb_db_context *ctdb_db,
struct ctdb_call *call,
struct ctdb_ltdb_header *header,
TDB_DATA *data);
int ctdbd_start(struct ctdb_context *ctdb);
struct ctdb_call_state *ctdbd_call_send(struct ctdb_db_context *ctdb_db, struct ctdb_call *call);
int ctdbd_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
/*
queue a packet for sending
*/
int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
/*
setup the fd used by the queue
*/
int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
/*
setup a packet queue on a socket
*/
struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
TALLOC_CTX *mem_ctx, int fd, int alignment,
ctdb_queue_cb_fn_t callback,
void *private_data);
/*
allocate a packet for use in client<->daemon communication
*/
struct ctdb_req_header *_ctdbd_allocate_pkt(struct ctdb_context *ctdb,
TALLOC_CTX *mem_ctx,
enum ctdb_operation operation,
size_t length, size_t slength,
const char *type);
#define ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, type) \
(type *)_ctdbd_allocate_pkt(ctdb, mem_ctx, operation, length, sizeof(type), #type)
struct ctdb_req_header *_ctdb_transport_allocate(struct ctdb_context *ctdb,
TALLOC_CTX *mem_ctx,
enum ctdb_operation operation,
size_t length, size_t slength,
const char *type);
#define ctdb_transport_allocate(ctdb, mem_ctx, operation, length, type) \
(type *)_ctdb_transport_allocate(ctdb, mem_ctx, operation, length, sizeof(type), #type)
/*
lock a record in the ltdb, given a key
*/
int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
/*
unlock a record in the ltdb, given a key
*/
int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
/*
make a ctdb call to the local daemon - async send. Called from client context.
This constructs a ctdb_call request and queues it for processing.
This call never blocks.
*/
struct ctdb_call_state *ctdb_client_call_send(struct ctdb_db_context *ctdb_db,
struct ctdb_call *call);
/*
make a recv call to the local ctdb daemon - called from client context
This is called when the program wants to wait for a ctdb_call to complete and get the
results. This call will block unless the call has already completed.
*/
int ctdb_client_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
int ctdb_daemon_set_message_handler(struct ctdb_context *ctdb, uint64_t srvid,
ctdb_message_fn_t handler,
void *private_data);
int ctdb_client_send_message(struct ctdb_context *ctdb, uint32_t vnn,
uint64_t srvid, TDB_DATA data);
/*
send a ctdb message
*/
int ctdb_daemon_send_message(struct ctdb_context *ctdb, uint32_t vnn,
uint64_t srvid, TDB_DATA data);
struct lockwait_handle *ctdb_lockwait(struct ctdb_db_context *ctdb_db,
TDB_DATA key,
void (*callback)(void *), void *private_data);
struct ctdb_call_state *ctdb_daemon_call_send(struct ctdb_db_context *ctdb_db,
struct ctdb_call *call);
int ctdb_daemon_call_recv(struct ctdb_call_state *state, struct ctdb_call *call);
struct ctdb_call_state *ctdb_daemon_call_send_remote(struct ctdb_db_context *ctdb_db,
struct ctdb_call *call,
struct ctdb_ltdb_header *header);
int ctdb_call_local(struct ctdb_db_context *ctdb_db, struct ctdb_call *call,
struct ctdb_ltdb_header *header, TALLOC_CTX *mem_ctx, TDB_DATA *data,
uint32_t caller);
#define ctdb_reqid_find(ctdb, reqid, type) (type *)_ctdb_reqid_find(ctdb, reqid, #type, __location__)
void ctdb_recv_raw_pkt(void *p, uint8_t *data, uint32_t length);
int ctdb_socket_connect(struct ctdb_context *ctdb);
void ctdb_latency(double *latency, struct timeval t);
uint32_t ctdb_reqid_new(struct ctdb_context *ctdb, void *state);
void *_ctdb_reqid_find(struct ctdb_context *ctdb, uint32_t reqid, const char *type, const char *location);
void ctdb_reqid_remove(struct ctdb_context *ctdb, uint32_t reqid);
void ctdb_request_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
void ctdb_reply_control(struct ctdb_context *ctdb, struct ctdb_req_header *hdr);
int ctdb_daemon_send_control(struct ctdb_context *ctdb, uint32_t destnode,
uint64_t srvid, uint32_t opcode, uint32_t client_id, uint32_t flags,
TDB_DATA data,
ctdb_control_callback_fn_t callback,
void *private_data);
int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
TDB_DATA *outdata);
int ctdb_daemon_set_call(struct ctdb_context *ctdb, uint32_t db_id,
ctdb_fn_t fn, int id);
int ctdb_control(struct ctdb_context *ctdb, uint32_t destnode, uint64_t srvid,
uint32_t opcode, uint32_t flags, TDB_DATA data,
TALLOC_CTX *mem_ctx, TDB_DATA *outdata, int32_t *status,
struct timeval *timeout, char **errormsg);
#define CHECK_CONTROL_DATA_SIZE(size) do { \
if (indata.dsize != size) { \
DEBUG(0,(__location__ " Invalid data size in opcode %u. Got %u expected %u\n", \
opcode, (unsigned)indata.dsize, (unsigned)size)); \
return -1; \
} \
} while (0)
int ctdb_control_getvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
int ctdb_control_setvnnmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
int ctdb_control_getdbmap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
int ctdb_control_getnodemap(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
int ctdb_control_writerecord(struct ctdb_context *ctdb, uint32_t opcode, TDB_DATA indata, TDB_DATA *outdata);
struct ctdb_traverse_start {
uint32_t db_id;
uint32_t reqid;
uint64_t srvid;
};
/*
structure used to pass record data between the child and parent
*/
struct ctdb_rec_data {
uint32_t length;
uint32_t reqid;
uint32_t keylen;
uint32_t datalen;
uint8_t data[1];
};
/* structure used for pulldb control */
struct ctdb_control_pulldb {
uint32_t db_id;
uint32_t lmaster;
};
/* structure used for pulldb control */
struct ctdb_control_pulldb_reply {
uint32_t db_id;
uint32_t count;
uint8_t data[1];
};
/* set dmaster control structure */
struct ctdb_control_set_dmaster {
uint32_t db_id;
uint32_t dmaster;
};
/*
structure for setting a tunable
*/
struct ctdb_control_set_tunable {
uint32_t value;
uint32_t length;
uint8_t name[1];
};
/*
structure for getting a tunable
*/
struct ctdb_control_get_tunable {
uint32_t length;
uint8_t name[1];
};
/*
structure for listing tunables
*/
struct ctdb_control_list_tunable {
uint32_t length;
/* returns a : separated list of tunable names */
uint8_t data[1];
};
/* table that contains a list of all nodes a ctdb knows about and their
status
*/
struct ctdb_node_and_flags {
uint32_t vnn;
uint32_t flags;
struct sockaddr_in sin;
};
struct ctdb_node_map {
uint32_t num;
struct ctdb_node_and_flags nodes[1];
};
int32_t ctdb_control_traverse_start(struct ctdb_context *ctdb, TDB_DATA indata,
TDB_DATA *outdata, uint32_t srcnode);
int32_t ctdb_control_traverse_all(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
int32_t ctdb_control_traverse_data(struct ctdb_context *ctdb, TDB_DATA data, TDB_DATA *outdata);
int ctdb_dispatch_message(struct ctdb_context *ctdb, uint64_t srvid, TDB_DATA data);
int daemon_register_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
int ctdb_deregister_message_handler(struct ctdb_context *ctdb, uint64_t srvid, void *private_data);
int daemon_deregister_message_handler(struct ctdb_context *ctdb, uint32_t client_id, uint64_t srvid);
int32_t ctdb_ltdb_enable_seqnum(struct ctdb_context *ctdb, uint32_t db_id);
int32_t ctdb_ltdb_update_seqnum(struct ctdb_context *ctdb, uint32_t db_id, uint32_t srcnode);
int32_t ctdb_ltdb_set_seqnum_frequency(struct ctdb_context *ctdb, uint32_t frequency);
struct ctdb_rec_data *ctdb_marshall_record(TALLOC_CTX *mem_ctx, uint32_t reqid, TDB_DATA key, TDB_DATA data);
int32_t ctdb_control_pull_db(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
int32_t ctdb_control_push_db(struct ctdb_context *ctdb, TDB_DATA indata);
int32_t ctdb_control_set_dmaster(struct ctdb_context *ctdb, TDB_DATA indata);
int32_t ctdb_control_set_recmode(struct ctdb_context *ctdb,
struct ctdb_req_control *c,
TDB_DATA indata, bool *async_reply,
const char **errormsg);
void ctdb_request_control_reply(struct ctdb_context *ctdb, struct ctdb_req_control *c,
TDB_DATA *outdata, int32_t status, const char *errormsg);
int32_t ctdb_control_freeze(struct ctdb_context *ctdb, struct ctdb_req_control *c, bool *async_reply);
int32_t ctdb_control_thaw(struct ctdb_context *ctdb);
int ctdb_start_recoverd(struct ctdb_context *ctdb);
uint32_t ctdb_get_num_active_nodes(struct ctdb_context *ctdb);
void ctdb_stop_monitoring(struct ctdb_context *ctdb);
void ctdb_start_monitoring(struct ctdb_context *ctdb);
void ctdb_start_tcp_tickle_update(struct ctdb_context *ctdb);
void ctdb_send_keepalive(struct ctdb_context *ctdb, uint32_t destnode);
void ctdb_daemon_cancel_controls(struct ctdb_context *ctdb, struct ctdb_node *node);
void ctdb_call_resend_all(struct ctdb_context *ctdb);
void ctdb_node_dead(struct ctdb_node *node);
void ctdb_node_connected(struct ctdb_node *node);
bool ctdb_blocking_freeze(struct ctdb_context *ctdb);
int32_t ctdb_control_max_rsn(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
int32_t ctdb_control_set_rsn_nonempty(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
int32_t ctdb_control_delete_low_rsn(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
int ctdb_ctrl_get_max_rsn(struct ctdb_context *ctdb, struct timeval timeout,
uint32_t destnode, uint32_t db_id, uint64_t *max_rsn);
int ctdb_ctrl_set_rsn_nonempty(struct ctdb_context *ctdb, struct timeval timeout,
uint32_t destnode, uint32_t db_id, uint64_t rsn);
int ctdb_ctrl_delete_low_rsn(struct ctdb_context *ctdb, struct timeval timeout,
uint32_t destnode, uint32_t db_id, uint64_t rsn);
void ctdb_set_scheduler(struct ctdb_context *ctdb);
void ctdb_restore_scheduler(struct ctdb_context *ctdb);
int32_t ctdb_control_takeover_ip(struct ctdb_context *ctdb,
struct ctdb_req_control *c,
TDB_DATA indata,
bool *async_reply);
int32_t ctdb_control_release_ip(struct ctdb_context *ctdb,
struct ctdb_req_control *c,
TDB_DATA indata,
bool *async_reply);
struct ctdb_public_ip {
uint32_t vnn;
uint32_t takeover_vnn;
struct sockaddr_in sin;
};
int ctdb_ctrl_takeover_ip(struct ctdb_context *ctdb, struct timeval timeout,
uint32_t destnode, struct ctdb_public_ip *ip);
int ctdb_ctrl_release_ip(struct ctdb_context *ctdb, struct timeval timeout,
uint32_t destnode, struct ctdb_public_ip *ip);
struct ctdb_all_public_ips {
uint32_t num;
struct ctdb_public_ip ips[1];
};
int32_t ctdb_control_get_public_ips(struct ctdb_context *ctdb, struct ctdb_req_control *c, TDB_DATA *outdata);
int ctdb_ctrl_get_public_ips(struct ctdb_context *ctdb,
struct timeval timeout, uint32_t destnode,
TALLOC_CTX *mem_ctx, struct ctdb_all_public_ips **ips);
/* from takeover/system.c */
int ctdb_sys_send_arp(const struct sockaddr_in *saddr, const char *iface);
bool ctdb_sys_have_ip(const char *ip);
int ctdb_sys_send_tcp(int fd,
const struct sockaddr_in *dest,
const struct sockaddr_in *src,
uint32_t seq, uint32_t ack, int rst);
int ctdb_set_public_addresses(struct ctdb_context *ctdb, const char *alist);
int ctdb_set_event_script(struct ctdb_context *ctdb, const char *script);
int ctdb_takeover_run(struct ctdb_context *ctdb, struct ctdb_node_map *nodemap);
int32_t ctdb_control_tcp_client(struct ctdb_context *ctdb, uint32_t client_id,
TDB_DATA indata);
int32_t ctdb_control_tcp_add(struct ctdb_context *ctdb, TDB_DATA indata);
int32_t ctdb_control_tcp_remove(struct ctdb_context *ctdb, TDB_DATA indata);
int32_t ctdb_control_startup(struct ctdb_context *ctdb, uint32_t vnn);
int32_t ctdb_control_kill_tcp(struct ctdb_context *ctdb, TDB_DATA indata);
int32_t ctdb_control_get_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata, TDB_DATA *outdata);
int32_t ctdb_control_set_tcp_tickle_list(struct ctdb_context *ctdb, TDB_DATA indata);
void ctdb_takeover_client_destructor_hook(struct ctdb_client *client);
int ctdb_event_script(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
int ctdb_event_script_callback(struct ctdb_context *ctdb,
struct timeval timeout,
TALLOC_CTX *mem_ctx,
void (*callback)(struct ctdb_context *, int, void *),
void *private_data,
const char *fmt, ...) PRINTF_ATTRIBUTE(6,7);
void ctdb_release_all_ips(struct ctdb_context *ctdb);
void set_nonblocking(int fd);
void set_close_on_exec(int fd);
bool ctdb_recovery_lock(struct ctdb_context *ctdb, bool keep);
int ctdb_set_recovery_lock_file(struct ctdb_context *ctdb, const char *file);
int32_t ctdb_control_get_tunable(struct ctdb_context *ctdb, TDB_DATA indata,
TDB_DATA *outdata);
int32_t ctdb_control_set_tunable(struct ctdb_context *ctdb, TDB_DATA indata);
int32_t ctdb_control_list_tunables(struct ctdb_context *ctdb, TDB_DATA *outdata);
void ctdb_tunables_set_defaults(struct ctdb_context *ctdb);
int32_t ctdb_control_modflags(struct ctdb_context *ctdb, TDB_DATA indata);
int ctdb_ctrl_get_all_tunables(struct ctdb_context *ctdb,
struct timeval timeout,
uint32_t destnode,
struct ctdb_tunable *tunables);
void ctdb_start_freeze(struct ctdb_context *ctdb);
bool parse_ip_port(const char *s, struct sockaddr_in *ip);
int ctdb_sys_open_capture_socket(const char *iface, void **private_data);
int ctdb_sys_close_capture_socket(void *private_data);
int ctdb_sys_open_sending_socket(void);
int ctdb_sys_read_tcp_packet(int s, void *private_data, struct sockaddr_in *src, struct sockaddr_in *dst,
uint32_t *ack_seq, uint32_t *seq);
int ctdb_ctrl_killtcp(struct ctdb_context *ctdb,
struct timeval timeout,
uint32_t destnode,
struct ctdb_control_killtcp *killtcp);
int ctdb_ctrl_get_tcp_tickles(struct ctdb_context *ctdb,
struct timeval timeout,
uint32_t destnode,
TALLOC_CTX *mem_ctx,
uint32_t vnn,
struct ctdb_control_tcp_tickle_list **list);
#endif