USFS(4)

USFS(4) 💅

okay bestie, welcome to USFS(4) from the Kernel Interfaces Manual — section 4, the kernel-side girlypop zone. This page is all about usfs, aka USB device side support for bulk only transport mass storage. Let's get into it 🫶

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🌸 NAME 🌸

usfs — USB device side support for bulk only transport mass storage. that's the whole vibe, no cap.

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✨ SYNOPSIS ✨

If you wanna compile this driver into the kernel, drop these lines into your kernel configuration file, exactly like this:

device usb
device usfs

Alternatively, to load the driver as a module at boot time, put this line in loader.conf(5):

usfs_load="YES"

slay, module loading era 💖

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🦋 DESCRIPTION 🦋

⚠️ real talk first: this driver is obsolete. Users are advised to use cfumass(4) instead. like, the manual literally says it. so bestie, go check out cfumass(4) 💀

The usfs driver provides support for emulating an USB mass storage device when the USB stack is activated in USB device side mode — that means the usb_template(4) module is loaded and the hw.usb.template sysctl is set to 0. iykyk 👑

Upon attach, the driver creates a RAM disk which can be read and written. iconic behavior, honestly 🎀

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🌈 SEE ALSO 🌈

• cfumass(4) — the one the manual tells you to use instead, periodt.
• umass(4) — another SEE ALSO cutie.
• usb(4) — yes, that USB.
• usb_template(4) — the module mentioned above, bestie.

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🎀 HISTORY 🎀

The usfs driver appeared in FreeBSD 8.0 — a whole era 💜

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xoxo, this page's source/version is Debian, dated May 17, 2018, and it's the USFS(4) manual page. slay 💅✨