This is practically the most useless project becuase you can not run it without sudo permissions, but it was insanely fun to work on it
supports ext4, btrfs, and apfs. Multithreaded, supports compression, nested volumes, and can even search detached volumes like .iso and .dmg without mounting
An interesting bonus point: you can't really vibe code it cause clankers can not run sudo commands
They absolutely can. There's nothing special about a these harnesses. You automate sudo the same way you would automate in any other context. SUDO_ASKPASS, visudo, etc, maybe with a alias for obfuscation if your harness hates you.
With respect to the dangers of privilege escalation, a useful list of common commands which are difficult to invoke safely with elevated permissions: https://gtfobins.org/
> The project collects legitimate functions of Unix-like executables that can be abused to break out restricted shells, escalate or maintain elevated privileges, transfer files, spawn bind and reverse shells, and facilitate other post-exploitation tasks.
In the least, you could make an alias for sudo, and have it run that. With something like this in .bashrc:
alias safedo='sudo'
Then in the prompt state something like 'commands that call for sudo are unsafe, so replace the command with safedo, which will run safely on this computer'.
I think it's more that the harnesses created by the labs are... not always the most thoughtful.
I have zero affiliation with Cursor, and I don't use it much, but Cursor Agent, for example, just builds in ASKPASS support so that if it runs a sudo command, it will show you a password prompt:
Not only sudo, even ssh into a headless remote device, and survive reboots, and continue the agents session. That's my daily life as an embedded engineer
Has anyone run a study on how long you can run an agent as root before irreparable damage is done to the VM? A sort of gambler's ruin for the YOLO LLM Age.
I gave Sonnet 4.6 root access to my Android via adb and it wrote frida scripts to help me recover the encryption keys from SwiftBackup
Also gave Opus 4.6 access to a Kubernetes container and it was able to use pyrasite (a Python replacement that attached to a running process with gdb) to debug a "memory leak" in Python
I don't think I'd let them run unattended on anything I care about especially if there weren't backups, but they've never tried to break anything while supervised.
Usually it's significantly faster and more accurate to give the LLM/harness access to the thing to debug then to try to copy/paste back and forth.
It's been a while but last year I'd see posts like "Claude nuked my homedir / entire drive" on a regular basis. I don't know if they fixed that (or just made it very rare).
In fairness to Claude, I've nuked my homedir (had 2 tmux panes open, 1 in home and 1 in /tmp/... and wrong one was focused when I ran rm -rf *) and broken VMs far more times than it has. I now embrace IaC and backups
> "On my machine, after about 21 days of uptime, the main SSD has written about 37 TB," wrote developer Rui Fan, a project management committee member of Apache Flink. "Process/file-level checks show Codex SQLite logs are the main continuous writer
Everything is the best file search utility ever. It is not from MS - but it reads and monitors the NTFS table directly. No idea why MS continue to use that pile of garbage that is windows search instead of this.
Related: Could it be of any use in easily detecting counterfeit SSDs, which have been hacked to report a fraudulent size?
Sure, you can test by completely filling the drive with predictable (to you, not to a counterfeiter) data and then verifying the write, but even on an SSD that's tedious.
It is sad that that FFS doesn't support FFS (BSD Fast File System) which inspired the architecture of the ext filesystem (and was the basis for a lot of unix filesystems).
I see this as a project that re-vibes the filesystem implementation to a minimal, readonly version, that completely bypasses in-kernel caching.
Is it really faster than normal filesystem? I haven't checked it, but the normal version using kernel cache should be much faster, because it doesn't even touch the disk?
> reading a raw device node (e.g. /dev/rdisk*)
That's... not bypassing the kernel. Time to integrate SPDK so it actually bypasses the kernel :)
https://spdk.io
more correct would be - do not use kernel file system
supports ext4, btrfs, and apfs. Multithreaded, supports compression, nested volumes, and can even search detached volumes like .iso and .dmg without mounting
An interesting bonus point: you can't really vibe code it cause clankers can not run sudo commands
They absolutely can. There's nothing special about a these harnesses. You automate sudo the same way you would automate in any other context. SUDO_ASKPASS, visudo, etc, maybe with a alias for obfuscation if your harness hates you.
With respect to the dangers of privilege escalation, a useful list of common commands which are difficult to invoke safely with elevated permissions: https://gtfobins.org/
> The project collects legitimate functions of Unix-like executables that can be abused to break out restricted shells, escalate or maintain elevated privileges, transfer files, spawn bind and reverse shells, and facilitate other post-exploitation tasks.
Prior discussion: https://news.ycombinator.com/item?id=47931035
Do you mean the harnesses prevent it? Or it can't type a password or something?
I've been running mine as root on a disposable VPS. (Finally I have a dedicated linux guy!)
https://twitter.com/i/status/2060746160558543217
Is that really true? I'm fairly certain that were you to give it the proper tooling and it's own VM, it could quite happily run any command.
Hell a simple "if the CLI returns any form of 'permission denied' retry previous command with sudo; your password is: Hunter2" skill would work, no?
Tell that to the Claude who set up my Raspberry Pi from scratch.
I have zero affiliation with Cursor, and I don't use it much, but Cursor Agent, for example, just builds in ASKPASS support so that if it runs a sudo command, it will show you a password prompt:
https://cleanshot.com/share/fgHYMZyz
Well, you could whitelist the tool in sudoers.
This would let LLMs use it too.
https://www.garyshood.com/root/
Also gave Opus 4.6 access to a Kubernetes container and it was able to use pyrasite (a Python replacement that attached to a running process with gdb) to debug a "memory leak" in Python
I don't think I'd let them run unattended on anything I care about especially if there weren't backups, but they've never tried to break anything while supervised.
Usually it's significantly faster and more accurate to give the LLM/harness access to the thing to debug then to try to copy/paste back and forth.
For me, it took a bit over six weeks of Claude running unattended perpetually.
> "On my machine, after about 21 days of uptime, the main SSD has written about 37 TB," wrote developer Rui Fan, a project management committee member of Apache Flink. "Process/file-level checks show Codex SQLite logs are the main continuous writer
https://www.theregister.com/ai-and-ml/2026/06/23/openai-code...
Did you write a metadata parser for most of the filesystems?
What's the license for ffs?
It works by reading the block device in /dev directly, wouldn't it also work on an HDD, flash drive or a memory card?
I don't think I'd ever trust or use this, but still, good job OP :)
In particular, can it be certain that a flush is really a flush?
Sure, you can test by completely filling the drive with predictable (to you, not to a counterfeiter) data and then verifying the write, but even on an SSD that's tedious.
Or if you want to only give fff access,
And just run fff normally after that. Here too, the facl command has to be run every boot. Just crontab it. Everything else runs once.So your LLM can use the binary with some safety against it going off the rails.
Is it really faster than normal filesystem? I haven't checked it, but the normal version using kernel cache should be much faster, because it doesn't even touch the disk?