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syz-extract-constants
Defining and extracting kernel constants for syzkaller syzlang descriptions
tasks/syzkaller-ppdev-syzlang/environment/skills/syz-extract-constants/SKILL.md
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# Defining Constants in Syzlang
## Overview
Syzkaller needs to know the actual values of kernel constants (ioctl numbers, flags, etc.) to generate valid fuzzing programs. There are two ways to provide these values:
1. **Manual `.const` file** - Define constants directly in a companion file
2. **`syz-extract` tool** - Extract values from kernel source headers (requires kernel source)
## Method 1: Manual Constants File (Recommended when no kernel source)
Create a `.const` file alongside your `.txt` file with the constant values:
### File naming