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Linux System Programming Techniques

You're reading from   Linux System Programming Techniques Become a proficient Linux system programmer using expert recipes and techniques

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Product type Paperback
Published in May 2021
Publisher Packt
ISBN-13 9781789951288
Length 432 pages
Edition 1st Edition
Tools
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Author (1):
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Jack-Benny Persson Jack-Benny Persson
Author Profile Icon Jack-Benny Persson
Jack-Benny Persson
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Toc

Table of Contents (14) Chapters Close

Preface 1. Chapter 1: Getting the Necessary Tools and Writing Our First Linux Programs 2. Chapter 2: Making Your Programs Easy to Script FREE CHAPTER 3. Chapter 3: Diving Deep into C in Linux 4. Chapter 4: Handling Errors in Your Programs 5. Chapter 5: Working with File I/O and Filesystem Operations 6. Chapter 6: Spawning Processes and Using Job Control 7. Chapter 7: Using systemd to Handle Your Daemons 8. Chapter 8: Creating Shared Libraries 9. Chapter 9: Terminal I/O and Changing Terminal Behavior 10. Chapter 10: Using Different Kinds of IPC 11. Chapter 11: Using Threads in Your Programs 12. Chapter 12: Debugging Your Programs 13. Other Books You May Enjoy

FIFO – building the receiver

In the previous recipe, we wrote a program that creates a FIFO and writes a message to it. We also tested it using cat to receive the messages. In this recipe, we'll write a C program that reads from the FIFO.

Reading from a FIFO isn't any different than reading from a regular file, or let's say, stdin.

Getting ready

Before you start this recipe, it's best if you complete the previous recipe first. We'll use the program from the previous recipe to write data to the FIFO that we'll receive in this recipe.

You'll also need the usual tools; that is, the GCC compiler, the Make tool, and the generic Makefile.

How to do it…

In this recipe, we'll write a receiving program for the sender we wrote in the previous recipe. Let's get started:

  1. Write the following code in a file and save it as fifo-receiver.c. We will open the FIFO with a file stream and then read it character by character...
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