From: Demi Marie Obenour <demiobenour@gmail.com>
To: Alyssa Ross <hi@alyssa.is>, devel@spectrum-os.org
Subject: Re: [PATCH v2 5/8] host/rootfs: create a per-VM user namespace
Date: Fri, 12 Dec 2025 13:02:16 -0500 [thread overview]
Message-ID: <643d01a0-3dcc-4a79-81fa-6648272666ce@gmail.com> (raw)
In-Reply-To: <20251211162145.124509-10-hi@alyssa.is>
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On 12/11/25 11:21, Alyssa Ross wrote:
> The document portal has to be root to mount its fuse filesystem. This
> needs to be a shared namespace because virtiofsd needs to be in the
> same mount namespace as the document portal so that it sees the fuse
> filesystem, so we create a per-VM persistent user namespace.
>
> Signed-off-by: Alyssa Ross <hi@alyssa.is>
I think it would be cleanest to have a per-VM supervisor process that
spawns each process in the correct namespace. This avoids having
to manually unmount anything. This is definitely out of scope for
now, though. Since a per-VM supervisor is needed for cgroup support,
I think this should wait until cgroup support is done.
--
Sincerely,
Demi Marie Obenour (she/her/hers)
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next prev parent reply other threads:[~2025-12-12 18:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-11 16:21 [PATCH v2 1/8] host/rootfs: create dbus socket externally Alyssa Ross
2025-12-11 16:21 ` [PATCH v2 2/8] host/rootfs: move vsock sockets out of VM dir Alyssa Ross
2025-12-11 16:21 ` [PATCH v2 3/8] host/rootfs: move portal bus socket " Alyssa Ross
2025-12-11 16:21 ` [PATCH v2 4/8] host/rootfs: run xdg-desktop-portal-spectrum-host as non-root Alyssa Ross
2025-12-11 16:21 ` [PATCH v2 5/8] host/rootfs: create a per-VM user namespace Alyssa Ross
2025-12-12 18:02 ` Demi Marie Obenour [this message]
2025-12-11 16:21 ` [PATCH v2 6/8] host/rootfs: move xdp runtime dir out of VM dir Alyssa Ross
2025-12-11 16:21 ` [PATCH v2 7/8] host/rootfs: move fs directory out of VM directory Alyssa Ross
2025-12-11 16:21 ` [PATCH v2 8/8] host/rootfs: run filesystem daemons as non-root Alyssa Ross
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