[maemo-developers] HAL context initializing failure

[From: Dave Neary]

Hi Pallavi,

Pallavi Kandhare wrote:
> I did include the sample code in my previous mail.

This code does not compile - there is no main function declaration, no
header declarations, no compilation instructions... An extra 6 lines and
it is a compilable cut & paste, without it you are requiring people to
know a certain number of things before helping. Like I said, please do a
little extra to make it easy for people to help.

> I am including the code again for your reference:
> I am getting the error "_HAL context initializing failure_" in my below code
> When i debug the code it says unable to access memory at 0x0.


#include <stdio.h>
#include <dbus/dbus.h>
#include <libhal.h>

int main (void)
{
> DBusConnection *connection;
> DBusError error;
> LibHalContext *ctx;
> dbus_error_init(&error);
> if((connection = dbus_bus_get(DBUS_BUS_SYSTEM,&error)) == NULL)
> {
> printf("Error %s\n",error.message);
> return 1;
> }
> if ( dbus_error_is_set(&error) )
> {
> printf("Unable to connect to DBus: %s\n",error.message);
> return 1;
> }
> if((ctx = libhal_ctx_new())==NULL)
> {
> printf("Error %s\n",error.message);
> return 1;
> }
> if ( !libhal_ctx_set_dbus_connection(ctx, connection) )
> {
> printf("Error %s\n",error.message);
> return 1;
> }
> if ( !libhal_ctx_init(ctx, &error) )
> {
> printf("Hal context initializing failure %s\n",error.message);
> return 1;
> }
> else
> {
>    printf("Success");
>    return 0;
> }
}

Compiled with
gcc -ggdb  `pkg-config --cflags hal dbus-1` hal_context.c -o hal_context
`pkg-config --libs hal dbus-1`

It looks like HAL is not running on your OS. This code works fine for
me. Check if hald is in the process list.

Cheers,
Dave.

-- 
maemo.org docsmaster
Email: dneary at maemo.org
Jabber: bolsh at jabber.org