* [PATCH 1/1] image.bbclass: avoid boot error on read-only systemd image
2014-10-21 6:30 [PATCH 0/1] image.bbclass: avoid boot error on read-only systemd image Chen Qi
@ 2014-10-21 6:30 ` Chen Qi
2014-12-19 8:12 ` [PATCH 0/1] " ChenQi
1 sibling, 0 replies; 3+ messages in thread
From: Chen Qi @ 2014-10-21 6:30 UTC (permalink / raw)
To: openembedded-core
New version of systemd implements a new feature of updating /etc
or /var when needed at boot. For details, please see link below.
Opointer.de/blog/projects/stateless.html
For now, at boot time, the systemd-sysusers.service would update user
database files (/etc/passwd, /etc/group, etc.) according to the configuration
files under /usr/lib/sysusers.d. This step is necessary for other systemd
services to work correctly. Examples of such services are systemd-resolved
and systemd-tmpfiles-setup.
The problem is that on a read-only file system, that is, if /etc is read-only,
the user database files could not be updated, causing failures of services.
This patch fixes this problem by adding users/groups at rootfs time.
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
---
meta/classes/image.bbclass | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index 940bdb6..56109a0 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -225,6 +225,27 @@ read_only_rootfs_hook () {
fi
fi
fi
+
+ if ${@bb.utils.contains("DISTRO_FEATURES", "systemd", "true", "false", d)}; then
+ # Update user database files so that services don't fail for a read-only systemd system
+ for conffile in ${IMAGE_ROOTFS}/usr/lib/sysusers.d/systemd.conf ${IMAGE_ROOTFS}/usr/lib/sysusers.d/systemd-remote.conf; do
+ [ -e $conffile ] || continue
+ grep -v "^#" $conffile | sed -e '/^$/d' | while read type name id comment; do
+ if [ "$type" = "u" ]; then
+ useradd_params=""
+ [ "$id" != "-" ] && useradd_params="$useradd_params --uid $id"
+ [ "$comment" != "-" ] && useradd_params="$useradd_params --comment $comment"
+ useradd_params="$useradd_params --system $name"
+ eval useradd --root ${IMAGE_ROOTFS} $useradd_params || true
+ elif [ "$type" = "g" ]; then
+ groupadd_params=""
+ [ "$id" != "-" ] && groupadd_params="$groupadd_params --gid $id"
+ groupadd_params="$groupadd_params --system $name"
+ eval groupadd --root ${IMAGE_ROOTFS} $groupadd_params || true
+ fi
+ done
+ done
+ fi
}
PACKAGE_EXCLUDE ??= ""
--
1.9.1
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