Code Snipplets

reading multiple eventinterfaces with select

/*
sample by Eric Weiss eric@eric-weiss.de
*/
#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/input.h>
int
main(void) {
    fd_set rfds;
    struct timeval tv;
    int retval;
    struct input_event evt;
    struct input_event evt1;
    int file,file1;
    int a;
   /* Watch stdin (fd 0) to see when it has input. */
    file=open("/dev/input/event7",O_NONBLOCK +O_ASYNC+O_RDONLY);
    file1=open("/dev/input/event1",O_NONBLOCK +O_ASYNC+O_RDONLY);
    printf(  "fds %i , %i \n",file,file1);

   /* Wait up to five seconds. */
    while(1)
      {
        tv.tv_sec = 1;
        tv.tv_usec = 0;
    FD_ZERO(&rfds);
    FD_SET(file, &rfds);
    FD_SET(file1, &rfds);
        retval = select(5, &rfds, NULL, NULL, &tv);
        printf("retval %i\n",retval);
        if( FD_ISSET(file, &rfds))
          {
            read(file,&evt, sizeof(struct input_event));
            printf("event:  %i %i %i %i\n", evt.code,evt.value,evt.type,retval);
          }
        if( FD_ISSET(file1, &rfds))
          {
            read(file1,&evt1, sizeof(struct input_event));
            printf("event1:  %i %i %i %i\n", evt1.code,evt1.value,evt1.type,retval);
          }
          
        if ( evt.type == EV_KEY)
          {
            printf ("%i %i %i\n",evt.type,evt.value,evt.code);
          }
      }
    
    /* Don't rely on the value of tv now! */

   if (retval == -1)
        perror("select()");
    else if (retval)
        printf("Data is available now.\n");
        /* FD_ISSET(0, &rfds) will be true. */
    else
        printf("No data within five seconds.\n");

   return 0;
}

Virtualbox Networking

/etc/network/interfaces

auto br0
iface br0 inet static
address 172.16.0.1
netmask 255.255.255.0
broadcast 172.16.0.255
bridge_ports vbox0 vbox1 vbox2
post-up VBoxAddIF vbox1 ew br0
post-up VBoxAddIF vbox2 ew br0

~./Virtualbox/bridge_setup

#!/bin/sh
set -e
BRIDGE="br0"
case "${1}" in
        "up" )
                # Get the last vbox interface that was created or "" if none
                TAP=$(cat /proc/net/dev | grep vbox | tail -n 1 | cut -d":" -f1 | sed 's/\s*vbox\(\.*\)/\1/')
                # If there was no previous interface then set to -1 (this is sothe += works)
                [ "${TAP}" = "" ] && TAP=-1
                # Increment TAP
                let "TAP+=1"
                # prepend vbox onto the TAP no
                TAP="vbox${TAP}"
                # Create the new TAP device
                sudo VBoxTunctl -b -u $(whoami) -t ${TAP}
                # Bring up the TAP (without an ip)
                sudo ifconfig ${TAP} up
                # Add the TAP to the Bridge
                sudo brctl addif ${BRIDGE} ${TAP}
                # Echo the name of the TAP so VirtualBox knows which one to use
                # on lenny the echo must be commented for virtuabox to work correctly
                echo ${TAP}
                ;;
        "down" )
                # VirtualBox tells us which TAP it used
                TAP=${3}
                # Bring the TAP down
                sudo ifconfig ${TAP} down
                # Remove the TAP
                sudo VBoxTunctl -d ${TAP} > /dev/null 2>&1
                ;;
esac

Bacula

shitty SQL_ACII <> UTF-8 problem

psql -U bacula --password  -h localhost postgres
alter database bacula rename to baculaold;
pg_dump -h localhost -U bacula baculaold > bacula.sql
createdb -E SQL_ASCII -O bacula bacula -T template0
psql -U bacula --password  -h localhost postgres < bacula.sql

create initrd

find . | cpio --create --format='newc' | gzip   > /tmp/newinitrd