The Linux kernel user-space API guide

While much of the kernel’s user-space API is documented elsewhere (particularly in the man-pages project), some user-space information can also be found in the kernel tree itself. This manual is intended to be the place where this information is gathered.

Table of contents

• No New Privileges Flag
• Seccomp BPF (SECure COMPuting with filters)
  • Introduction
  • What it isn’t
  • Usage
  • Return values
  • Pitfalls
  • Example
  • Sysctls
  • Adding architecture support
  • Caveats
• unshare system call
  • Change Log
  • Contents
  • 1) Overview
  • 2) Benefits
  • 3) Cost
  • 4) Requirements
  • 5) Functional Specification
  • 6) High Level Design
  • 7) Low Level Design
  • 8) Test Specification
  • 9) Future Work
• Speculation Control
  • PR_GET_SPECULATION_CTRL
  • PR_SET_SPECULATION_CTRL
  • Common error codes
  • PR_SET_SPECULATION_CTRL error codes
  • Speculation misfeature controls