From: Demi Marie Obenour <demiobenour@gmail.com>
To: Spectrum OS Development <devel@spectrum-os.org>
Cc: Alyssa Ross <hi@alyssa.is>, Demi Marie Obenour <demiobenour@gmail.com>
Subject: [PATCH] host/rootfs: Avoid using bwrap to enter new PID namespace
Date: Thu, 09 Jul 2026 19:46:57 -0400 [thread overview]
Message-ID: <20260709-s6-pid-namespaces-v1-1-61a56abd1e7c@gmail.com> (raw)
s6-supervise can do so directly with less overhead.
Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com>
---
host/rootfs/file-list.mk | 2 ++
.../template/data/service/spectrum-router/flag-newpidns | 0
.../service/vm-services/template/data/service/spectrum-router/run | 5 ++++-
.../vm-services/template/data/service/vhost-user-gpu/flag-newpidns | 0
.../service/vm-services/template/data/service/vhost-user-gpu/run | 7 ++++---
5 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/host/rootfs/file-list.mk b/host/rootfs/file-list.mk
index 3899d620717fc97f42e669e5313c4100dcf5b1cd..951cb2e9f0af05839ef5e9c0b5384c13e56622ff 100644
--- a/host/rootfs/file-list.mk
+++ b/host/rootfs/file-list.mk
@@ -30,10 +30,12 @@ FILES = \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/dbus/notification-fd \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/dbus/run \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/down \
+ image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/flag-newpidns \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/notification-fd \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/run \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-fs/notification-fd \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-fs/run \
+ image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/flag-newpidns \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/notification-fd \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run \
image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/xdg-desktop-portal-spectrum-host/notification-fd \
diff --git a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/flag-newpidns b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/flag-newpidns
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/run b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/run
index 3de58c27facc78c48176d8f9a6dd1827ac926f1a..ce84ed951de1a179d1430faae412fe4c1a2fb1f1 100755
--- a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/run
+++ b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/spectrum-router/run
@@ -25,7 +25,10 @@ if {
s6-setuidgid router
bwrap
- --unshare-all
+ --unshare-net
+ --unshare-ipc
+ --unshare-uts
+ --unshare-cgroup
--unshare-user
--dev-bind / /
--setenv RUST_LOG spectrum-router=debug,info
diff --git a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/flag-newpidns b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/flag-newpidns
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run
index c3bfafe02ec6d2ee418fe56b033bbc4c7a73b186..f5c0f15184f0e72457f9c0bfa546590b9308eb9c 100755
--- a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run
+++ b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run
@@ -17,9 +17,10 @@ s6-applyuidgid -UzG 15 # wayland
s6-ipcserverd -1c 1
bwrap
- --unshare-all
- # --unshare-all only implies --unshare-user-try.
- # Make this more than a "try".
+ --unshare-net
+ --unshare-ipc
+ --unshare-uts
+ --unshare-cgroup
--unshare-user
--bind $WAYLAND_DISPLAY $WAYLAND_DISPLAY
--ro-bind /usr /usr
---
base-commit: 89f8c9238616b43e48b21e2eade41e061b006cd8
change-id: 20260709-s6-pid-namespaces-43b626d690cb
--
Sincerely,
Demi Marie Obenour (she/her/hers)
next reply other threads:[~2026-07-10 13:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-09 23:46 Demi Marie Obenour [this message]
2026-07-10 14:39 ` [PATCH] host/rootfs: Avoid using bwrap to enter new PID namespace Alyssa Ross
2026-07-10 17:09 ` Demi Marie Obenour
2026-07-13 9:01 ` Alyssa Ross
2026-07-13 14:17 ` Demi Marie Obenour
2026-07-15 10:15 ` Alyssa Ross
2026-07-15 16:51 ` Demi Marie Obenour
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