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From: Demi Marie Obenour <demiobenour@gmail.com>
To: minijail@chromium.org
Cc: Alyssa Ross <hi@alyssa.is>,
	Spectrum OS Development <devel@spectrum-os.org>
Subject: Can't get minijail0 working without bind-mounting /
Date: Sun, 23 Nov 2025 01:38:03 -0500	[thread overview]
Message-ID: <92968d96-fa34-41ea-8594-62e6691ad479@gmail.com> (raw)


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I'm trying to get minijail0 to work without bind-mounting /, and I'm
running into lots of problems.  So far:

- Unprivileged user namespaces fail due to -EPERM in a mount syscall.

- Mounting a tmpfs over / always causes the program to be executed
  to not be found.

- `sudo ./minijail0.sh -v --profile=minimalistic-mountns /bin/ls`
  works, but doesn't actually do any sandboxing as it bind-mounts `/`.

Are there examples of how to use minijail0 properly?  Alternatively,
can I use it purely for seccomp and Landlock, and use bubblewrap to
handle namespacing?
-- 
Sincerely,
Demi Marie Obenour (she/her/hers)

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             reply	other threads:[~2025-11-23  6:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-23  6:38 Demi Marie Obenour [this message]
2025-11-23 18:21 ` Can't get minijail0 working without bind-mounting / Demi Marie Obenour
2025-11-24 19:57   ` [minijail] " Mike Frysinger

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