kbdattach.c File Reference

#include <linux/serio.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>

Include dependency graph for kbdattach.c:

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Defines
#define	ION_LDISC   N_MOUSE
#define	ION_SERIO_TYPE   SERIO_STOWAWAY
#define	ION_SERIO_FLAGS   CS8
#define	ION_SERIO_SPEED   B115200
Functions
static void	setline (int fd, int flags, int speed)
int	main (int argc, char **argv)

---

Define Documentation

#define ION_LDISC   N_MOUSE

Copyright (C) 2008 iRex Technologies B.V. All rights reserved.

Based on inputattach.c by Vojtech Pavlik

Definition at line 57 of file kbdattach.c.

Referenced by main().

#define ION_SERIO_FLAGS   CS8

Definition at line 59 of file kbdattach.c.

Referenced by main().

#define ION_SERIO_SPEED   B115200

Definition at line 60 of file kbdattach.c.

Referenced by main().

#define ION_SERIO_TYPE   SERIO_STOWAWAY

Definition at line 58 of file kbdattach.c.

Referenced by main().

---

Function Documentation

int main	(	int	argc,
		char **	argv
	)

Definition at line 79 of file kbdattach.c.

References fd, ION_LDISC, ION_SERIO_FLAGS, ION_SERIO_SPEED, ION_SERIO_TYPE, and setline().

{
    unsigned long devt;
    int ldisc;
    int fd;
   
    // open device
    if ((fd = open(argv[1], O_RDWR | O_NOCTTY | O_NONBLOCK)) < 0) {
        fprintf(stderr, "kbdattach: can't open device\n");
        return 1;
    }

    // set speed and flags
    setline(fd, ION_SERIO_FLAGS, ION_SERIO_SPEED);

    // flush input junk
    // while (!readchar(fd, &c, 100)); 
    // do device init if required

    // set line discipline
    ldisc = ION_LDISC; 
    if(ioctl(fd, TIOCSETD, &ldisc)) {
        fprintf(stderr, "kbdattach: can't set line discipline\n"); 
        return 1;
    }

    // set device type
    devt = ION_SERIO_TYPE;
    if(ioctl(fd, SPIOCSTYPE, &devt)) {
        fprintf(stderr, "kbdattach: can't set device type\n");
        return 1;
    }

    daemon(0,0);

    read(fd, NULL, 0);

    // reset line discipline
    ldisc = 0;
    ioctl(fd, TIOCSETD, &ldisc);
    close(fd);

    return 0;
}

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static void setline	(	int	fd,
		int	flags,
		int	speed
	)			[static]

Definition at line 145 of file kbdattach.c.

Referenced by main().

{
    struct termios t;

    tcgetattr(fd, &t);

    t.c_cflag = flags | CREAD | HUPCL | CLOCAL;
    t.c_iflag = IGNBRK | IGNPAR;
    t.c_oflag = 0;
    t.c_lflag = 0;
    t.c_cc[VMIN ] = 1;
    t.c_cc[VTIME] = 0;

    cfsetispeed(&t, speed);
    cfsetospeed(&t, speed);

    tcsetattr(fd, TCSANOW, &t);
}

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