Using the Go Programming Language in Practice
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Meeting Agenda 4:30 – 6:00 PM, Wednesday, Nov 2Nd, 2016 Lyons Town Hall
Meeting Agenda 4:30 – 6:00 PM, Wednesday, Nov 2nd, 2016 Lyons Town Hall I. Roll Call, Agenda, Minutes • Amendments to Agenda • Approve Minutes from Oct 19th • UEB Officers and Member Lead Areas • Upcoming Meetings - Nov 12, 2016 9 AM or 1 PM - Lyons Boards and Commissions Training - Lyons Nov 9. 8 AM - Northern Water Fall Water Users Meeting - Longmont, Best Western 1850 Industrial Cir. Dec 2nd - CAMU Fall Meeting - Fairfield & Woods in Denver, CO II. Audience Business III. Liaison Updates • Board of Trustees Update - MEAN meeting Report • Staff, Engineering Update - Honeywell Savings Gaurantee IV. Continued Business ● Town Utility Account tracking V. New Business ● Water/Wastewater Rate and CIP Study Presentation RG & Assoc. VI. Parking Lot • 2017 Utility FUnd Budget, Pipe Water rates for 2017 Budget, • Reserve/Rate Stabilization Funds • Wastewater Pretreatment Policy • LRAP INF 2.2.1 • Municipal Code Corrections UEB Meeting Minutes, 19 Oct 2016 Meeting Time and Location: Began at 4:30 at Town Hall. Attendance:, Aaron Caplan, Lee Hall, Coco Gordon, John Cowdry, Chuck Keim, Dan Reitz, Jay Stott Staff: Kyle Miller Liaisons: Guests: Amendments to Agenda: Welcomed Jay Stott as the newest member of the UEB. Previous Minutes: . Reviewed and modified Oct 5th Minutes under Water Wastewater CIP to add “Areas where there is no looping of the water mains need looping. It was emphasized to try and coordinate getting water, and wastewater done first in areas that need paving.” Aaron had not followed up with Parks and Rec to find out if they were budgeting for water usage. He would do so. Then approved minutes. -
Also Includes Slides and Contents From
The Compilation Toolchain Cross-Compilation for Embedded Systems Prof. Andrea Marongiu ([email protected]) Toolchain The toolchain is a set of development tools used in association with source code or binaries generated from the source code • Enables development in a programming language (e.g., C/C++) • It is used for a lot of operations such as a) Compilation b) Preparing Libraries Most common toolchain is the c) Reading a binary file (or part of it) GNU toolchain which is part of d) Debugging the GNU project • Normally it contains a) Compiler : Generate object files from source code files b) Linker: Link object files together to build a binary file c) Library Archiver: To group a set of object files into a library file d) Debugger: To debug the binary file while running e) And other tools The GNU Toolchain GNU (GNU’s Not Unix) The GNU toolchain has played a vital role in the development of the Linux kernel, BSD, and software for embedded systems. The GNU project produced a set of programming tools. Parts of the toolchain we will use are: -gcc: (GNU Compiler Collection): suite of compilers for many programming languages -binutils: Suite of tools including linker (ld), assembler (gas) -gdb: Code debugging tool -libc: Subset of standard C library (assuming a C compiler). -bash: free Unix shell (Bourne-again shell). Default shell on GNU/Linux systems and Mac OSX. Also ported to Microsoft Windows. -make: automation tool for compilation and build Program development tools The process of converting source code to an executable binary image requires several steps, each with its own tool. -
FPGA BASED RECONFIGURABLE BODY AREA NETWORK USING Nios II and Uclinux
FPGA BASED RECONFIGURABLE BODY AREA NETWORK USING Nios II AND uClinux A Thesis Submitted to the College of Graduate Studies and Research in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Department of Electrical and Computer Engineering University of Saskatchewan by Anthony Voykin Saskatoon, Saskatchewan, Canada c Copyright Anthony Voykin, April 2013. All rights reserved. Permission to Use In presenting this thesis in partial fulfillment of the requirements for a Postgraduate degree from the University of Saskatchewan, it is agreed that the Libraries of this University may make it freely available for inspection. Permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professors who supervised this thesis work or, in their absence, by the Head of the Department of Electrical and Computer Engineering or the Dean of the College of Graduate Studies and Research at the University of Saskatchewan. Any copying, publication, or use of this thesis, or parts thereof, for financial gain without the written permission of the author is strictly prohibited. Proper recognition shall be given to the author and to the University of Saskatchewan in any scholarly use which may be made of any material in this thesis. Request for permission to copy or to make any other use of material in this thesis in whole or in part should be addressed to: Head of the Department of Electrical and Computer Engineering 57 Campus Drive University of Saskatchewan Saskatoon, Saskatchewan, Canada S7N 5A9 i Acknowledgments I would like to thank my advisors Professor Ron Bolton and Professor Francis Bui for providing me with guidance and support necessary to complete my thesis work. -
Embedded Linux Systems with the Yocto Project™
OPEN SOURCE SOFTWARE DEVELOPMENT SERIES Embedded Linux Systems with the Yocto Project" FREE SAMPLE CHAPTER SHARE WITH OTHERS �f, � � � � Embedded Linux Systems with the Yocto ProjectTM This page intentionally left blank Embedded Linux Systems with the Yocto ProjectTM Rudolf J. Streif Boston • Columbus • Indianapolis • New York • San Francisco • Amsterdam • Cape Town Dubai • London • Madrid • Milan • Munich • Paris • Montreal • Toronto • Delhi • Mexico City São Paulo • Sidney • Hong Kong • Seoul • Singapore • Taipei • Tokyo Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and the publisher was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals. The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein. For information about buying this title in bulk quantities, or for special sales opportunities (which may include electronic versions; custom cover designs; and content particular to your business, training goals, marketing focus, or branding interests), please contact our corporate sales depart- ment at [email protected] or (800) 382-3419. For government sales inquiries, please contact [email protected]. For questions about sales outside the U.S., please contact [email protected]. Visit us on the Web: informit.com Cataloging-in-Publication Data is on file with the Library of Congress. -
Embedded System Setting up Development Environment
Embedded System Setting up Development Environment Tool chain installation GCC tool chain includes gcc compiler,assembler, linker, and other related utilities. (root@host)#rpm –ivh armtools-2.95.3- 5.i386.rpm Add /usr/local/gnu-2.95.3/bin to the searching path. (root@host)# export PATH=/usr/local/gnu- 2.95.3/bin:$PATH Setting up Development Environment Installing uClibc (root@host)#rpm –ivh uClibc-0.9.5- 1.i386.rpm The uClibc will be installed in /usr/local/uClibc-0.9.5 Building busybox BusyBox: The Swiss Army Knife of Embedded Linux Official site: http://busybox.net Install the BusyBox Configure the function of busybox Modify Makefile make Configure the function of busybox Config.h // This file defines the feature set to be compiled into busybox. // When you turn things off here, they won’t be compiled in at all. // //// This file is parsed by sed. You MUST use single line comments. // i.e., //#define BB_BLAH // // BusyBox Applications //#define BB_ADJTIMEX //#define BB_AR #define BB_ASH … # If you are running a cross compiler, you may want to set this # to something more interesting, like “powerpc-linux-“. CROSS = arm-elf- CC = $(CROSS)gcc … CROSS_CFLAGS+= -nostdinc –I$(LIBCDIR)/include –I$(GCCINCDIR) #Add below LIBCDIR=/usr/local/uClibc-0.9.5/linux-2.0.x GCCINCDIR=/usr/local/gnu-2.95.3/lib/gcc-lib/arm-elf/2.95/include Modify Makefile # If you are running a cross compiler, you may want to set this # to something more interesting, like “powerpc-linux-“. CROSS = arm-elf- CC = $(CROSS)gcc … CROSS_CFLAGS+= -nostdinc –I$(LIBCDIR)/include -
Cp 99, Other Filing/Pleading, 11/12/2014
BINGHAM Catherine Wang Brett P. Ferenchak catherine. wang@ bingham. com [email protected] November 11, 2014 Via Overnight Courier and E-Mail Oregon Public Utility Commission Attn: Filing Center 550 Capitol Street, N.E. Suite 215 Salem, OR 97301-2551 [email protected] Re: Business Telecom, LLC d/b/a EarthLink Business I Notification of Conversion and Associated Name Change Dear Sir or Madam: Business Telecom, LLC d/b/a EarthLink Business I (formerly known as Business Telecom, Inc. d/b/a EarthLink Business III) (the "Company") hereby notifies the Commission (1) that the Company converted from a North Carolina corporation to a North Carolina limited liability company' and (2) of the associated name change to "Business Telecom, LLC d/b/a EarthLink Business 1." The Company requests that the Commission update its records, including the Company's Certificate,2 to reflect the conversion and associate name change and, to the extent necessary, approve these changes. Attached hereto are the Company's conversion documents and updated authorization to transact business in Oregon and trade name registration. Beijing Boston Frankfurt Hartford Hong Kong London los Angeles New York Orange County San Francisco Santa Monica Silicon Valley Tokyo Washington The conversion of the Company to a limited liability company was merely a change in its corporate form -the conversion was accomplished through the filing of Articles of Bingham McCutchen LLP Conversion in North Carolina and did not entail any merger or other transactions interrupting 2020 K Street NW Washington, DC the existence of the Company. 20006-1806 2 The Company is authorized to provide interexchange telecommunications services pursuant to Order No. -
Smashing the Stack Protector for Fun and Profit
Smashing the Stack Protector for Fun and Profit Bruno Bierbaumer1 ( ), Julian Kirsch1, Thomas Kittel1, Aurélien Francillon2, and Apostolis Zarras3 1 Technical University of Munich, Munich, Germany [email protected] 2 EURECOM, Sophia Antipolis, France 3 Maastricht University, Maastricht, Netherlands Abstract. Software exploitation has been proven to be a lucrative busi- ness for cybercriminals. Unfortunately, protecting software against attacks is a long-lasting endeavor that is still under active research. However, certain software-hardening schemes are already incorporated into current compilers and are actively used to make software exploitation a compli- cated procedure for the adversaries. Stack canaries are such a protection mechanism. Stack canaries aim to prevent control flow hijack by detecting corruption of a specific value on the program’s stack. Careful design and implementation of this conceptually straightforward mechanism is crucial to defeat stack-based control flow detours. In this paper, we examine 17 different stack canary implementations across multiple versions of the most popular Operating Systems running on various architectures. We systematically compare critical implementation details and introduce one new generic attack vector which allows bypassing stack canaries on current Linux systems running up-to-date multi-threaded software altogether. We release an open-source framework (CookieCrumbler) that identifies the characteristics of stack canaries on any platform it is compiled on and we propose mitigation techniques against stack-based attacks. Although stack canaries may appear obsolete, we show that when they are used correctly, they can prevent intrusions which even the more sophisticated solutions may potentially fail to block. 1 Introduction Buffer overflow vulnerabilities are as old as the Internet itself. -
Operating Systems and Applications for Embedded Systems >>> Toolchains
>>> Operating Systems And Applications For Embedded Systems >>> Toolchains Name: Mariusz Naumowicz Date: 31 sierpnia 2018 [~]$ _ [1/19] >>> Plan 1. Toolchain Toolchain Main component of GNU toolchain C library Finding a toolchain 2. crosstool-NG crosstool-NG Installing Anatomy of a toolchain Information about cross-compiler Configruation Most interesting features Sysroot Other tools POSIX functions AP [~]$ _ [2/19] >>> Toolchain A toolchain is the set of tools that compiles source code into executables that can run on your target device, and includes a compiler, a linker, and run-time libraries. [1. Toolchain]$ _ [3/19] >>> Main component of GNU toolchain * Binutils: A set of binary utilities including the assembler, and the linker, ld. It is available at http://www.gnu.org/software/binutils/. * GNU Compiler Collection (GCC): These are the compilers for C and other languages which, depending on the version of GCC, include C++, Objective-C, Objective-C++, Java, Fortran, Ada, and Go. They all use a common back-end which produces assembler code which is fed to the GNU assembler. It is available at http://gcc.gnu.org/. * C library: A standardized API based on the POSIX specification which is the principle interface to the operating system kernel from applications. There are several C libraries to consider, see the following section. [1. Toolchain]$ _ [4/19] >>> C library * glibc: Available at http://www.gnu.org/software/libc. It is the standard GNU C library. It is big and, until recently, not very configurable, but it is the most complete implementation of the POSIX API. * eglibc: Available at http://www.eglibc.org/home. -
A Review on Elliptic Curve Cryptography for Embedded Systems
International Journal of Computer Science & Information Technology (IJCSIT), Vol 3, No 3, June 2011 A REVIEW ON ELLIPTIC CURVE CRYPTOGRAPHY FOR EMBEDDED SYSTEMS Rahat Afreen 1 and S.C. Mehrotra 2 1Tom Patrick Institute of Computer & I.T, Dr. Rafiq Zakaria Campus, Rauza Bagh, Aurangabad. (Maharashtra) INDIA [email protected] 2Department of C.S. & I.T., Dr. B.A.M. University, Aurangabad. (Maharashtra) INDIA [email protected] ABSTRACT Importance of Elliptic Curves in Cryptography was independently proposed by Neal Koblitz and Victor Miller in 1985.Since then, Elliptic curve cryptography or ECC has evolved as a vast field for public key cryptography (PKC) systems. In PKC system, we use separate keys to encode and decode the data. Since one of the keys is distributed publicly in PKC systems, the strength of security depends on large key size. The mathematical problems of prime factorization and discrete logarithm are previously used in PKC systems. ECC has proved to provide same level of security with relatively small key sizes. The research in the field of ECC is mostly focused on its implementation on application specific systems. Such systems have restricted resources like storage, processing speed and domain specific CPU architecture. KEYWORDS Elliptic curve cryptography Public Key Cryptography, embedded systems, Elliptic Curve Digital Signature Algorithm ( ECDSA), Elliptic Curve Diffie Hellman Key Exchange (ECDH) 1. INTRODUCTION The changing global scenario shows an elegant merging of computing and communication in such a way that computers with wired communication are being rapidly replaced to smaller handheld embedded computers using wireless communication in almost every field. This has increased data privacy and security requirements. -
Porting Musl to the M3 Microkernel TU Dresden
Porting Musl to the M3 microkernel TU Dresden Sherif Abdalazim, Nils Asmussen May 8, 2018 Contents 1 Abstract 2 2 Introduction 3 2.1 Background.............................. 3 2.2 M3................................... 4 3 Picking a C library 5 3.1 C libraries design factors . 5 3.2 Alternative C libraries . 5 4 Porting Musl 7 4.1 M3andMuslbuildsystems ..................... 7 4.1.1 Scons ............................. 7 4.1.2 GNUAutotools........................ 7 4.1.3 Integrating Autotools with Scons . 8 4.2 Repositoryconfiguration. 8 4.3 Compilation.............................. 8 4.4 Testing ................................ 9 4.4.1 Syscalls ............................ 9 5 Evaluation 10 5.1 PortingBusyboxcoreutils . 10 6 Conclusion 12 1 Chapter 1 Abstract Today’s processing workloads require the usage of heterogeneous multiproces- sors to utilize the benefits of specialized processors and accelerators. This has, in turn, motivated new Operating System (OS) designs to manage these het- erogeneous processors and accelerators systematically. M3 [9] is an OS following the microkernel approach. M3 uses a hardware/- software co-design to exploit the heterogeneous systems in a seamless and effi- cient form. It achieves that by abstracting the heterogeneity of the cores via a Data Transfer Unit (DTU). The DTU abstracts the heterogeneity of the cores and accelerators so that they can communicate systematically. I have been working to enhance the programming environment in M3 by porting a C library to M3. I have evaluated different C library implementations like the GNU C Library (glibc), Musl, and uClibc. I decided to port Musl as it has a relatively small code base with fewer configurations. It is simpler to port, and it started to gain more ground in embedded systems which are also a perfect match for M3 applications. -
Rockjit: Securing Just-In-Time Compilation Using Modular Control-Flow Integrity
RockJIT: Securing Just-In-Time Compilation Using Modular Control-Flow Integrity Ben Niu Gang Tan Lehigh University Lehigh University 19 Memorial Dr West 19 Memorial Dr West Bethlehem, PA, 18015 Bethlehem, PA, 18015 [email protected] [email protected] ABSTRACT For performance, modern managed language implementations Managed languages such as JavaScript are popular. For perfor- adopt Just-In-Time (JIT) compilation. Instead of performing pure mance, modern implementations of managed languages adopt Just- interpretation, a JIT compiler dynamically compiles programs into In-Time (JIT) compilation. The danger to a JIT compiler is that an native code and performs optimization on the fly based on informa- attacker can often control the input program and use it to trigger a tion collected through runtime profiling. JIT compilation in man- vulnerability in the JIT compiler to launch code injection or JIT aged languages is the key to high performance, which is often the spraying attacks. In this paper, we propose a general approach only metric when comparing JIT engines, as seen in the case of called RockJIT to securing JIT compilers through Control-Flow JavaScript. Hereafter, we use the term JITted code for native code Integrity (CFI). RockJIT builds a fine-grained control-flow graph that is dynamically generated by a JIT compiler, and code heap for from the source code of the JIT compiler and dynamically up- memory pages that hold JITted code. dates the control-flow policy when new code is generated on the fly. In terms of security, JIT brings its own set of challenges. First, a Through evaluation on Google’s V8 JavaScript engine, we demon- JIT compiler is large and usually written in C/C++, which lacks strate that RockJIT can enforce strong security on a JIT compiler, memory safety. -
User's Manual
rBOX610 Linux Software User’s Manual Disclaimers This manual has been carefully checked and believed to contain accurate information. Axiomtek Co., Ltd. assumes no responsibility for any infringements of patents or any third party’s rights, and any liability arising from such use. Axiomtek does not warrant or assume any legal liability or responsibility for the accuracy, completeness or usefulness of any information in this document. Axiomtek does not make any commitment to update the information in this manual. Axiomtek reserves the right to change or revise this document and/or product at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Axiomtek Co., Ltd. Trademarks Acknowledgments Axiomtek is a trademark of Axiomtek Co., Ltd. ® Windows is a trademark of Microsoft Corporation. Other brand names and trademarks are the properties and registered brands of their respective owners. Copyright 2014 Axiomtek Co., Ltd. All Rights Reserved February 2014, Version A2 Printed in Taiwan ii Table of Contents Disclaimers ..................................................................................................... ii Chapter 1 Introduction ............................................. 1 1.1 Specifications ...................................................................................... 2 Chapter 2 Getting Started ......................................