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dbus: fix ujail configuration

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Running dbus as an unprivileged user fails for two reasons: Cannot write pid file
and cannot read the installed policies:

 Tue Aug  5 17:12:41 2025 daemon.info dbus-daemon[8568]: jail: exec-ing /usr/bin/dbus-daemon
 Tue Aug  5 17:12:41 2025 daemon.info dbus-daemon[8585]: Encountered error 'Failed to open "/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf": Permission denied' while parsing '/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf'
 Tue Aug  5 17:12:41 2025 daemon.err dbus-daemon[8568]: dbus-daemon[8585]: Encountered error 'Failed to open "/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf": Permission denied' while parsing '/etc/dbus-1/system.d/org.freedesktop.ModemManager1.conf'
 Tue Aug  5 17:12:41 2025 daemon.warn dbus-daemon[8585]: Failed to start message bus: Failed to open "/var/run/dbus.pid": Permission denied
 Tue Aug  5 17:12:41 2025 daemon.err dbus-daemon[8568]: dbus-daemon[8585]: Failed to start message bus: Failed to open "/var/run/dbus.pid": Permission denied
 Tue Aug  5 17:12:41 2025 daemon.info dbus-daemon[8568]: jail: jail (8585) exited with exit: 1

Fix by dropping the pid file when running unprivileged and changing the owner
of the installed policies.

Fixes: f238d6dd09 ("dbus: run as regular user rather than as root")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
This commit is contained in:
Bjørn Mork
2025-08-05 17:34:42 +02:00
committed by Robert Marko
parent 8b84b03b94
commit 2749f0a3af
2 changed files with 3 additions and 1 deletions
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2
utils/dbus/Makefile
View File

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=dbus PKG_NAME:=dbus
PKG_VERSION:=1.16.2 PKG_VERSION:=1.16.2
PKG_RELEASE:=2 PKG_RELEASE:=3
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=https://dbus.freedesktop.org/releases/dbus PKG_SOURCE_URL:=https://dbus.freedesktop.org/releases/dbus

2
utils/dbus/files/dbus.init
View File

@@ -15,6 +15,7 @@ start_service() {
mkdir -m 0755 -p /var/lib/dbus mkdir -m 0755 -p /var/lib/dbus
mkdir -m 0755 -p /var/run/dbus mkdir -m 0755 -p /var/run/dbus
chown dbus:dbus /var/lib/dbus /var/run/dbus chown dbus:dbus /var/lib/dbus /var/run/dbus
chown -R dbus:dbus /etc/dbus-1
[ -x /usr/bin/dbus-uuidgen ] && /usr/bin/dbus-uuidgen --ensure [ -x /usr/bin/dbus-uuidgen ] && /usr/bin/dbus-uuidgen --ensure
@@ -26,6 +27,7 @@ start_service() {
procd_set_param stdout 1 procd_set_param stdout 1
procd_set_param stderr 1 procd_set_param stderr 1
[ -x /sbin/ujail -a -e /etc/capabilities/dbus.json ] && { [ -x /sbin/ujail -a -e /etc/capabilities/dbus.json ] && {
procd_append_param command --nopidfile
procd_add_jail dbus procd_add_jail dbus
procd_set_param user dbus procd_set_param user dbus
procd_set_param group dbus procd_set_param group dbus