EPSIAE » eneraptor

/*

* ioctl.c − the process to use ioctl's to control the kernel module

*

* Until now we could have used cat for input and output. But now

* we need to do ioctl's, which require writing our own process.

*/

/*

* device specifics, such as ioctl numbers and the

* major device file.

*/

#include "drv_comm.h"

#include "generator.h"

#include <stdio.h>

#include <stdlib.h>

#include <syslog.h>

#include <fcntl.h>            /* open */

#include <unistd.h>            /* exit */

//#include <sys/ioctl.h>  /* ioctl */

/*

* Functions for the ioctl calls

*/

ioctl_set_msg_1(int file_desc, char *message)

{

        int ret_val;

        ret_val = ioctl(file_desc, IOCTL_SET_MSG_1, message);

        if (ret_val < 0) {

                printf("ioctl_set_msg failed:%d\n", ret_val);

                exit(-1);

        }

}

ioctl_set_msg_2(int file_desc, char *message)

{

        int ret_val;

        ret_val = ioctl(file_desc, IOCTL_SET_MSG_2, message);

        if (ret_val < 0) {

                printf("ioctl_set_msg failed:%d\n", ret_val);

                exit(-1);

        }

}

ioctl_set_msg_3(int file_desc, char *message)

{

        int ret_val;

        ret_val = ioctl(file_desc, IOCTL_SET_MSG_3, message);

        if (ret_val < 0) {

                printf("ioctl_set_msg failed:%d\n", ret_val);

                exit(-1);

        }

}

ioctl_set_msg_4(int file_desc, char *message)

{

        int ret_val;

        ret_val = ioctl(file_desc, IOCTL_SET_MSG_4, message);

        if (ret_val < 0) {

                printf("ioctl_set_msg failed:%d\n", ret_val);

                exit(-1);

        }

}

ioctl_set_msg_5(int file_desc, char *message)

{

        int ret_val;

        ret_val = ioctl(file_desc, IOCTL_SET_MSG_5, message);

        if (ret_val < 0) {

                printf("ioctl_set_msg failed:%d\n", ret_val);

                exit(-1);

        }

}

ioctl_set_msg_6(int file_desc, char *message)

{

        int ret_val;

        ret_val = ioctl(file_desc, IOCTL_SET_MSG_6, message);

        if (ret_val < 0) {

                printf("ioctl_set_msg failed:%d\n", ret_val);

                exit(-1);

        }

}

void set_device_value(const char *dev, int devIdx)

{

    //TODO use mutex?

    int file_desc;

        char *msg = int_to_str(generate_value());

        file_desc = open(dev, 0);

        if (file_desc < 0) {

                printf("Can't open device file: %s\n", dev);

        }

        else{

                //printf("Open device file: %s\n", dev);

                switch(devIdx)

                {

                    case 1:

                //printf("Setting message dev %d\n", devIdx);

                ioctl_set_msg_1(file_desc, msg);

                break;

                    case 2:

                //printf("Setting message dev %d\n", devIdx);

                ioctl_set_msg_2(file_desc, msg);

                break;

                    case 3:

                //printf("Setting message dev %d\n", devIdx);

                ioctl_set_msg_3(file_desc, msg);

                break;

                    case 4:

                //printf("Setting message dev %d\n", devIdx);

                ioctl_set_msg_4(file_desc, msg);

                break;

                    case 5:

                //printf("Setting message dev %d\n", devIdx);

                ioctl_set_msg_5(file_desc, msg);

                break;

                    case 6:

                //printf("Setting message dev %d\n", devIdx);

                ioctl_set_msg_6(file_desc, msg);

                break;

                }

        syslog(LOG_MAIL, "%s:%s", dev, msg);

        // TODO syslog

        }

        close(file_desc);

}