Sockets, Shellcode, Porting, and Coding: Reverse Engineering Exploits and Tool Coding for Security Professionals

Syscall Reference

This appendix includes several descriptions of useful

system calls. For more complete information about the

system calls available on Linux and FreeBSD, take a look

at the syscall man pages and the header files they refer

to. Before trying to implement a system call in

assembly, first try it out in a simple C program. That

way you can become familiar with the system call’s

behavior, and this will allow you to write better code.

Appendix D

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642 Appendix D • Syscall Reference

exit( int )

The exit system call allows you to terminate a process. It only requires one argument, an

integer that will be ...