votequorum_context_set(3) [centos man page]

VOTEQUORUM_CONTEXT_SET(3)			    Corosync Cluster Engine Programmer's Manual 			 VOTEQUORUM_CONTEXT_SET(3)

NAME

       votequorum_context_set - Sets the context variable for a VOTEQUORUM instance

SYNOPSIS

       #include <corosync/votequorum.h>

       int votequorum_context_set(votequorum_handle_t handle, void *context);

DESCRIPTION

       The  votequorum_context_set  function is used to set the context variable for a votequorum instance. It has no meaning insire libvotequorum
       itself and will not be touched by the library. It can be retrieved using votequorum_context_get(3)

RETURN VALUE

       This call returns the CS_OK value if successful, otherwise an error is returned.

ERRORS

       CS_ERR_TRY_AGAIN Resource temporarily unavailable

       CS_ERR_INVALID_PARAM Invalid argument

       CS_ERR_ACCESS Permission denied

       CS_ERR_LIBRARY The connection failed

       CS_ERR_INTERRUPT System call inturrupted by a signal

       CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported

       CS_ERR_MESSAGE_ERROR Incorrect auth message received

       CS_ERR_NO_MEMORY Not enough memory to completed the requested task

SEE ALSO

       votequorum_overview(8),	votequorum_initialize(3),  votequorum_finalize(3),   votequorum_getinfo(3),   votequorum_trackstart(3),   votequo-
       rum_trackstop(3),  votequorum_fd_get(3),  votequorum_dispatch(3),  votequorum_context_set(3),  votequorum_context_get(3), votequorum_setex-
       pected(3), votequorum_setvotes(3)

corosync Man Page						    2014-06-10						 VOTEQUORUM_CONTEXT_SET(3)

VOTEQUORUM_INITIALIZE(3)			    Corosync Cluster Engine Programmer's Manual 			  VOTEQUORUM_INITIALIZE(3)

NAME

       votequorum_initialize - Create a new connection to the VoteQuorum service

SYNOPSIS

       #include <corosync/votequorum.h>

       int votequorum_initialize(votequorum_handle_t *handle, votequorum_callbacks_t *callbacks);

DESCRIPTION

       The votequorum_initialize function is used to initialize a connection to the vote-based quorum database API.

       Each  application  may  have several connections to the votequorum API.	Each application uses the handle argument to uniquely identify the
       connection.  The handle argument is then used in other function calls to identify the connection to be  used  for  communication  with  the
       votequorum service.

       Every  time  the  voting  configuraton  changes	(eg  a node joins or leave the cluster), the callback is called.  The callback function is
       described by the following type definitions:

       typedef void (*votequorum_notification_fn_t) (
	    votequorum_handle_t handle,
	    uint64_t context,
	    uint32_t quorate,
	    uint32_t node_list_entries,
	    votequorum_node_t node_list[]
	    );

       Every time the expected votes are changed, the callback is called.  The expected votes callback function is described by the following type
       definitions:

       typedef void (*votequorum_expectedvotes_notification_fn_t) (
	       votequorum_handle_t handle,
	       uint64_t context,
	       uint32_t expected_votes);

       The callbacks argument is of the type:

       typedef struct {
	    votequorum_notification_fn_t votequorum_notify_fn;
	    votequorum_expectedvotes_notification_fn_t votequorum_expectedvotes_notify_fn;
       } votequorum_callbacks_t;

       When a configuration change occurs, the callback is called from the votequorum_dispatch() function.

RETURN VALUE

       This call returns the CS_OK value if successful, otherwise an error is returned.

ERRORS

       CS_ERR_TRY_AGAIN Resource temporarily unavailable

       CS_ERR_INVALID_PARAM Invalid argument

       CS_ERR_ACCESS Permission denied

       CS_ERR_LIBRARY The connection failed

       CS_ERR_INTERRUPT System call inturrupted by a signal

       CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported

       CS_ERR_MESSAGE_ERROR Incorrect auth message received

       CS_ERR_NO_MEMORY Not enough memory to completed the requested task

SEE ALSO

       votequorum_overview(8),	 votequorum_finalize(3),   votequorum_getinfo(3),   votequorum_trackstart(3),	votequorum_trackstop(3),  votequo-
       rum_fd_get(3),	votequorum_dispatch(3),   votequorum_context_set(3),   votequorum_context_get(3),   votequorum_setexpected(3),	  votequo-
       rum_setvotes(3)

corosync Man Page						    2014-06-10						  VOTEQUORUM_INITIALIZE(3)