evmsrvstart man page on HP-UX

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EvmSrvStart(3)							EvmSrvStart(3)

       EvmSrvStart(), EvmSrvMessageGet() - event service functions

       is not currently supported for general use.

       EVM Support Library

       service_name  The  name	for  this service.  The name must be a service
		     defined in the EVM daemon configuration file,
		      .CR /etc/evmdaemon.conf .

       arg_string    If this operand is not NULL, it is written to the connec‐
		     tion when the service is started.

       transport     Specify  the type of connection to be made to the daemon.
		     Because EVM currently supports only local connection  the
		     daemon,  transport	 must  always be set to NULL.  If this
		     argument is not NULL, an error occurs.

		     EVM does not support remote connection.

       connection    For this is  the  return  operand.	 The  calling  routine
		     passes this value to when it is done with the connection.

		     For  this	is  the	 service connection that is read for a

       event	     If this operand is not NULL on return, it contains an EVM
		     event returned by the service.

       msg	     If	 this  operand	is  not	 NULL on return, it contains a
		     character string returned by the service.

       errmsg	     If this operand is not NULL on  return,  it  contains  an
		     error message character string returned by the service.

       info	     If	 this  operand	is  not	 NULL  on  return, it contains
		     numeric information returned by the service.

       The routine creates a service connection to the EVM daemon,  requesting
       that the service identified as service_name be started.	If the service
       is known to the daemon, it is started as a child process of the daemon,
       and  the	 connection  is	 transferred  to  the service process.	If the
       arg_string is not NULL, the function then appends a  newline  character
       to it and writes it to the connection.

       The  routine  reads a single EVM service protocol message from the ser‐
       vice connection identified by connection and returns it to the  caller.
       The  message  may be a procedural protocol message, indicating that the
       service has started or terminated, or it may  carry  data.   Procedural
       messages are handled by the API function.  Data messages may be any one
       of the following:

	      ·	 An EVM event returned to the caller in event

	      ·	 A character string returned to the caller in msg

	      ·	 An error character string returned to the caller in errmsg

       In each of these cases, the data is returned to the caller only if  the
       address	passed	to  the	 function as the corresponding argument is not

       The function returns a non-null value in at most one  of	 these	return
       arguments,  and	sets the others to NULL.  If the incoming message does
       not include data (for example, if it is a protocol  message  indicating
       that  the service is terminating) all three of the arguments are set to

       The message may carry one information item, which is returned  if  info
       is  not	NULL.	This value is used in the service termination protocol
       message to indicate the exit code of the service process.

       is not currently supported for general use.

       If a non-null pointer was  supplied  as	the  appropriate  argument,  a
       received	 data  message	is  available  in one of the three data return

       The service indicated that it was terminating. If the caller passed a
	      non-null data argument,  the  service  process's	exit  code  is
	      returned in the info operand.

       The service connection was closed by the service before a service
	      termination  message was received. This value is returned if the
	      caller continues to attempt the call after the service has  been

       The value of is not set.

       /etc/evmdaemon.conf evmd configuration file




   Event Management

   Event Connection

   EVM Events


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