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Mastering Linux Kernel Development

Mastering Linux Kernel Development

By : CH Raghav Maruthi
2.9 (10)
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Mastering Linux Kernel Development

Mastering Linux Kernel Development

2.9 (10)
By: CH Raghav Maruthi

Overview of this book

Mastering Linux Kernel Development looks at the Linux kernel, its internal arrangement and design, and various core subsystems, helping you to gain significant understanding of this open source marvel. You will look at how the Linux kernel, which possesses a kind of collective intelligence thanks to its scores of contributors, remains so elegant owing to its great design. This book also looks at all the key kernel code, core data structures, functions, and macros, giving you a comprehensive foundation of the implementation details of the kernel’s core services and mechanisms. You will also look at the Linux kernel as well-designed software, which gives us insights into software design in general that are easily scalable yet fundamentally strong and safe. By the end of this book, you will have considerable understanding of and appreciation for the Linux kernel.
Table of Contents (12 chapters)
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Signal-management APIs


Applications are provided with various APIs for managing signals; we shall take a look at few of the important ones:

  1. Sigaction(): User-mode processes use the POSIX API sigaction()to examine or change the disposition of a signal. This API provides a variety of attribute flags that can further define the behavior of a signal:
 #include <signal.h>
 int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);

 The sigaction structure is defined as something like:

 struct sigaction {
 void (*sa_handler)(int);
 void (*sa_sigaction)(int, siginfo_t *, void *);
 sigset_t sa_mask;
 int sa_flags;
 void (*sa_restorer)(void);
 };
  • int signum is the identifier number of a recognized signal. sigaction() examines and sets the action to be associated with this signal.
  • const struct sigaction *actcan beassigned with the address of astruct sigactioninstance. The action specified in this structure becomes the new action bound to the signal. When the act pointer...

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