io_func.cpp File Reference

#include "can_man.h"
#include <devctl.h>

Include dependency graph for io_func.cpp:

Functions
int	io_devctl (resmgr_context_t *ctp, io_devctl_t *msg, iofunc_ocb_t *io_ocb)
int	io_open (resmgr_context_t *ctp, io_open_t *msg, RESMGR_HANDLE_T *handle, void *extra)

Detailed Description

io_func.cpp

Replacement functions for the default iofunc functions in the DAS resource manager.

Author

Abdul Rahman Kreidieh

Version

1.0.0

Date

February 26, 2019

Function Documentation

io_devctl()

int io_devctl	(	resmgr_context_t *	ctp,
		io_devctl_t *	msg,
		iofunc_ocb_t *	io_ocb
	)

set up "data" to point to the data area after the devctl msg struct this pointer is the same for input message and output message type save dcmd field and clear message header when data is to be returned in the reply, ctp->iov is set up, otherwise no data is returned

io_open()

int io_open	(	resmgr_context_t *	ctp,
		io_open_t *	msg,
		RESMGR_HANDLE_T *	handle,
		void *	extra
	)

Handler for _IO_CONNECT of CAN messages.

This is used to initialize resource manager function tables with CAN specific function for open().

Parameters

ctp	A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.
msg	A pointer to the io_open_t structure that contains the message that the resource manager received. For more information, see the documentation for iofunc_open().
handle	A pointer to the iofunc_attr_t structure that defines the characteristics of the device that the resource manager is controlling.
extra	Extra information from the library. If you're calling iofunc_open_default() from a resource manager's open() function (see resmgr_connect_funcs_t), simply pass the extra argument that's passed to open().

Returns

EOK - Successful completion.
ENOSPC - There's insufficient memory to allocate the OCB.
ENOMEM - There's insufficient memory to allocate an internal data structure required by resmgr_open_bind().