---
name: "lindebugfs"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/lindebugfs"
---

# lindebugfs(4)

Linux file system for debugging

## NAME

**lindebugfs** – Linux file system for debugging

## SYNOPSIS

```
lindebugfs		/sys/kernel/debug	lindebugfs	rw 0 0
```

## DESCRIPTION

The debug file system, or debugfs, makes process debugging easier by providing a simple API for data transfer between the kernel and user space. Debugfs is not a general-purpose file system and should not be used as a storage medium. Instead, developers can implement the debugfs interface in their code to generate debug information about their program at runtime. FreeBSD's **lindebugfs** uses the [pseudofs(9)](/pseudofs/9.md) file system construction kit to model itself after Linux's debugfs. The **lindebugfs** API is intended for use with programs that take advantage of FreeBSD's LinuxKPI compatibility layer.

When mounted, **lindebugfs** will populate with pseudo files from any running process that calls **debugfs\_create\_file()**. Since **lindebugfs** is a pseudo file system, file contents will be generated dynamically based on program provided file operations. The current **lindebugfs** implementation formally supports seq\_file and simple\_attr\_file virtual file formats.

## EXAMPLES

Load the **lindebugfs** kernel module:

```
kldload lindebugfs
```

Mount the **lindebugfs** file system on */sys/kernel/debug*:

```
mount -t lindebugfs lindebugfs /sys/kernel/debug
```

## SEE ALSO

mount(1), [linprocfs(4)](/linprocfs/4.md), [linsysfs(4)](/linsysfs/4.md), [linux(4)](/linux/4.md), [pseudofs(9)](/pseudofs/9.md)

## HISTORY

The **lindebugfs** file system first appeared in FreeBSD 12.1.

## AUTHORS

The initial implementation for **lindebugfs** was created by Matthew Macy. This manual page was written by Jake Freeland.