Linux Internals - Radar Tech

Course Content

Fundamental Concepts

Library Fundamentals
Static Linker and Dynamic Linker
Creation and use of Static and dynamic libraries
Constructors and destructors
ELF and Program Execution
ldconfig
Dynamically Loaded Libraries
GOT, PLT, and Lazy Binding
ABI, SYSV

Memory Management

File I/O

Advanced File I/O

Processes Management

Signals

Threads

Synchronization

IPC

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Course Content

Fundamental Concepts

Library Fundamentals

Static Linker and Dynamic Linker

Creation and use of Static and dynamic libraries

Constructors and destructors

ELF and Program Execution

ldconfig

Dynamically Loaded Libraries

GOT, PLT, and Lazy Binding

ABI, SYSV

Memory Management

Virtual addressing (Virtual Memory)

No VM VS Virtual Memory

Benefits of using VM

Process Memory Layout

Segments or Mappings

Stack allocation and deallocation

Dynamic memory allocation and deallocation

Demand paging, Locking Memory, and Memory Protection

Linux Common Memory Issues and Test cases

GDB, Valgrind, and Sanitizer tools

File I/O

Over View

Open(), create(), read(), write(), and close ()

File Descriptor and Open file relation

Accessing file attributes

Modifying File Offset

File mode

Changing file attributes

Advanced File I/O

Scatter – Gather I/O

File I/O Via Memory Mapping

DIO and AIO

Multiplexing or Async blocking I/O or Alternative I/O Models

Linux I/O architecture

Processes Management

Converting a Program into a Process

Process IDs

Memory Layout of a Process and Process Address Space

Kernel Process Address Space

Process Scheduler

Process Creation and Termination Calls

Executing Programs

Signals

Overview of Signals

Signal Disposition

Useful Signal-Related Functions

Signal Types and Categories

Generation of Signal and Delivery

Signal Handler and Designing Async Signal Handler

Threads

Concurrency and Need for Concurrency

Pthreads Library

Thread Creation and Termination

Thread ID’s

Joining a Thread

Detaching a Thread and Thread Attributes

Signals and Threads

Threads and Process Control

Synchronization

Shared Resources and Critical Section

Atomic Operations

Mutex and Insights of Mutex

Locking, Unlocking, and Deadlock

Mutex vs Spinlocks

Reader-Writer Locks and Producer Consumer

Condition Variables

IPC

Pipes

FIFO

Semaphores

Shared Memory

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