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eudev: create static-nodes in init script

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dev in modules.devname should be populated in /dev on boot.  remove
create static mode from udevd will make these devices cannot be
populated. Since commit [1], when use sysVinit, devices like
/dev/net/tun will not be created.

more info:
udevd in systemd also remove create static mode in udevd, but using
service kmod-static-nodes.service and systemd-tmpfiles-setup-dev.service
in systemd to create these node, so systemd works well.

For sysV, parse kmod static-nodes and generate the device nodes in init

[1] https://gitweb.gentoo.org/proj/eudev.git/commit/?id=2b7abd5ec9cc47a8b895df6db77fb1537c6f1a39

(From OE-Core rev: 10940ee60864500f037a73d8bde8d74f9917959c)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Changqing Li
2022-05-20 19:05:09 +08:00
committed by Richard Purdie
parent d14c6c45fc
commit 35e9ce18f5
2 changed files with 39 additions and 0 deletions
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37
meta/recipes-core/udev/eudev/init
View File

@@ -23,6 +23,42 @@ kill_udevd () {
[ -n "$pid" ] && kill $pid
}
make_static_nodes () {
[ -e /lib/modules/$(uname -r)/modules.devname ] || return 0
[ -x @KMOD@ ] || return 0
#output to /proc/self/fd/1 since /dev/stdout not created by udevd yet
@KMOD@ static-nodes --format=tmpfiles --output=/proc/self/fd/1 |
while read TTYPE TPATH TMODE TUSER TGROUP TAGE TARG; do
case "${TTYPE}" in
'd')
test -d "${TPATH}" || mkdir -p -m "${TMODE}" "${TPATH}"
;;
'c!')
if [ ! -c "${TPATH}" ]; then
old_ifs="${IFS}"
IFS=:
set -- ${TARG}
IFS="${old_ifs}"
mknod -m "${TMODE}" "${TPATH}" c "$@"
fi
;;
*)
echo "Unparseable line (${TTYPE} ${TPATH} ${TMODE} ${TUSER} ${TGROUP} ${TAGE} ${TARG})"
return 1
;;
esac
if [ "${TUSER}" != "-" ]; then
chown "${TUSER}" "${TPATH}"
fi
if [ "${TGROUP}" != "-" ]; then
chgrp "${TGROUP}" "${TPATH}"
fi
done
}
case "$1" in
start)
export ACTION=add
@@ -51,6 +87,7 @@ case "$1" in
# make_extra_nodes
kill_udevd > "/dev/null" 2>&1
make_static_nodes
# trigger the sorted events
[ -e /proc/sys/kernel/hotplug ] && printf '\0\n' >/proc/sys/kernel/hotplug
@UDEVD@ -d

2
meta/recipes-core/udev/eudev_3.2.11.bb
View File

@@ -41,6 +41,7 @@ do_install:append() {
install -d ${D}${sysconfdir}/init.d
install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
sed -i s%@UDEVD@%${base_sbindir}/udevd% ${D}${sysconfdir}/init.d/udev
sed -i s%@KMOD@%${base_bindir}/kmod% ${D}${sysconfdir}/init.d/udev
install -d ${D}${sysconfdir}/udev/rules.d
install -m 0644 ${WORKDIR}/local.rules ${D}${sysconfdir}/udev/rules.d/local.rules
@@ -73,6 +74,7 @@ FILES:libudev = "${base_libdir}/libudev.so.*"
FILES:eudev-hwdb = "${sysconfdir}/udev/hwdb.d"
RDEPENDS:eudev-hwdb += "eudev"
RDEPENDS:eudev += "kmod"
RPROVIDES:${PN} = "hotplug udev"
RPROVIDES:eudev-hwdb += "udev-hwdb"