Questions about FORK.

Ok.. I'm working on an account system, and want to make sure that no two 
accounts have the same email address. Don't want users having duplicate 
accounts. The issue I'm having is that during account creation I'm scanning 
all the existing user accounts to see if any have the same address. I'm 
using fork() so that I don't have the entire mud come to a screeching halt 
while it scans, but for some reason, although everything in the fork() seems 
to be working fine, it doesn't set the d->connected correctly or process the 
nanny function again at the end the way I'm wanting it to. Ideas? Thansk!

- Valnir

/* Code snippet */

void check_dup_email ( DESCRIPTOR_DATA *d, char *email )
{
    DIR *user_dir;
    struct dirent *users;
    USER_DATA *usr;
    char name[MIL];
    char buf[MSL];
    bool duplicate = FALSE;
    int f;

    if ( ( f = fork() ) == (-1) )
    {
        write_to_buffer( d, "\n\r\n\r", 0 );
        write_to_buffer( d, "An error occured while trying to validate your 
email address!\n\r", 0 );
        write_to_buffer( d, "You will not be able to complete continue 
creating your account\n\r"
            "until this problem is solved. The staff has been 
contacted.\n\r\n\r"
            "Please check back soon!\n\r\n\r"
            "^e[^fPress Return to Disconnect^e]^0\n\r", 0 );

        d->connected = CON_USER_DISCONNECT;
        bug( "fork() failed in check_dup_email.", 0 );
        do_bug( NULL, "fork() failed in check_dup_email." );
        return;
    }

    if ( !f )
    {
        write_to_buffer( d, "Please wait while we scan for duplicate 
accounts.", 0 );
        process_output( d, FALSE );

        if ( ( user_dir = opendir(USER_DIR) ) != NULL )
        {
            while ( ( users = readdir(user_dir) ) != NULL )
            {
                write_to_buffer( d, ".", 0 );

                if ( !str_cmp( users->d_name, "." )
                || !str_cmp( users->d_name, ".." ) )
                    continue;

                if ( !strstr( users->d_name, ".usr" ) )
                    continue;

                /* get name from file filename - still need to parse the 
'.usr' off the filename */

                if ( ( usr = load_account( NULL, name ) ) != NULL )
                {
                    if ( !str_cmp( usr->email, email ) )
                    {
                        sprintf( buf, "Attempt to use duplicate email 
address detected. "
                            "Same as '%s'.", usr->name );
                        log_string( buf );
                        duplicate = TRUE;
                    }
                }

                unload_account( NULL, usr);
                process_output( d, FALSE );

                if ( duplicate )
                    break;
            }
        }
        else
            bug( "Could not open USER_DIR!", 0 );

        closedir( user_dir );
        write_to_buffer( d, "\n\r\n\r", 0 );

        if ( duplicate )
        {
            write_to_buffer( d, "Duplicate email found! We do not allow 
multiple accounts\n\r"
                "per player. If you have forgotten your account name, please 
contact\n\r"
                "the staff at http://www.legendofthenobles.com/?page=email 
to request\n\r"
                "your account name.\n\r\n\r"
                "^e[^fPress Return to Disconnect^e]^0\n\r", 0 );

            process_output( d, TRUE );
            d->connected = CON_USER_DISCONNECT;
        }
        else
        {
            write_to_buffer( d, "No duplicate found.\n\r", 0 );
            process_output( d, TRUE );

            d->connected = CON_CONFIRM_EMAIL;
            nanny( d, email );
        }

        exit(0);
    }

    return;
}

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