PSEUDOFS(9)

✨ PSEUDOFS(9) ✨

okay so bestie, you found the manual page for pseudofs — the pseudo file system construction kit 💅 and ngl, it's giving kernel developer main character energy. This one lives in the Kernel Developer's Manual, section 9, and it's literally your blueprint for building fake-but-real filesystems. slay.

🎀 NAME 🎀

pseudofs — pseudo file system construction kit 🧰✨

🌸 SYNOPSIS 🌸

#include <fs/pseudofs/pseudofs.h>

that's it. that's the whole include. no cap. 🫶

💖 DESCRIPTION 💖

okay so here's the tea 🍓 — the pseudofs module hands you an abstract API for pseudo-file systems, like procfs(5) and linprocfs(5). it's basically the bestie who does all the annoying stuff for you so you don't have to.

it takes care of all the hairy bits, and bestie, there are a LOT of hairy bits 😭:

• interfacing with the VFS system — the way it just handles that for you? iconic.
• enforcing access control 🔒
• keeping track of file numbers 🔢
• cloning files and directories that are process-specific 👯♀️

so what's your job in all this? you're the consumer module — the module that implements the actual guts of the file system. all you gotta provide is:

• the directory structure, which is represented by a collection of structures declared and initialized by macros provided by pseudofs 🪄
• callbacks that report file attributes 📋
• callbacks that write the actual file contents into sbufs ✍️

and that's it!! the rest? not your problem. periodt. 👑

🦋 SEE ALSO 🦋

• linprocfs(5)
• linsysfs(5)
• procfs(5)
• sbuf(9)
• vnode(9)

go read those too, iykyk 💜

🌈 HISTORY 🌈

the pseudofs module appeared in FreeBSD 5.0. vintage. lowkey a legend. ✨

👑 AUTHORS 👑

the pseudofs module and this manual page were written by Dag-Erling Smørgrav <des@FreeBSD.org>. thank you for your service, king 🫡💖

and that's a wrap on the Debian build, dated April 20, 2007 — yes bestie, this page is old enough to have its own vibe, and it still ate 💅✨ stay hydrated, go write a filesystem, mwah 🎀