Udev-extraconf works correctly with sysvinit in the aspect of
automounting
block devices. But it has a serious problem in case of systemd.
Block devices
automounted by udev is unaccessible to host space(out of udevd's
private
namespace). For example, we cannot format those block devices.
e.g.
root@qemux86:~# mkfs.ext4 /dev/sda1
mke2fs 1.43.8 (1-Jan-2018)
/dev/sda1 contains a ext4 file system
last mounted on Tue Apr 3 06:22:41 2018
Proceed anyway? (y,N) y
/dev/sda1 is apparently in use by the system; will not make a
filesystem here!
Other distributions has no such problem, because they use a series
of rules to
manager block devices. Different types of block devices match
different rules.
But udev-extraconf just use one rule, automount.rules, which
results in this
problem.
The 'systemd-mount' command is recommended by the systemd
community to solve such
problems.
This patch makes use of 'systemd-mount' to solve the above problem.
[YOCTO #12644]
Signed-off-by: Hongzhi.Song <hongzhi.s...@windriver.com>
---
meta/recipes-core/udev/udev-extraconf/mount.sh | 83
++++++++++++++++++++------
meta/recipes-core/udev/udev-extraconf_1.1.bb | 3 +
2 files changed, 69 insertions(+), 17 deletions(-)
diff --git a/meta/recipes-core/udev/udev-extraconf/mount.sh
b/meta/recipes-core/udev/udev-extraconf/mount.sh
index d760328..067d4e2 100644
--- a/meta/recipes-core/udev/udev-extraconf/mount.sh
+++ b/meta/recipes-core/udev/udev-extraconf/mount.sh
@@ -4,10 +4,28 @@
#
# Attempt to mount any added block devices and umount any
removed devices
+BASE_INIT="`readlink "@base_sbindir@/init"`"
+INIT_SYSTEMD="@systemd_unitdir@/systemd"
+
+if [ "x$BASE_INIT" = "x$INIT_SYSTEMD" ];then
+ # systemd as init uses systemd-mount to mount block devices
+ MOUNT="/usr/bin/systemd-mount"
+ UMOUNT="/usr/bin/systemd-umount"
+
+ if [ -x $MOUNT ] && [ -x $UMOUNT ];
+ then
+ logger "Using systemd-mount to finish mount"
+ else
+ logger "Linux init is using systemd, so please install
systemd-mount to finish mount"
+ exit 1
+ fi
+else
+ MOUNT="/bin/mount"
+ UMOUNT="/bin/umount"
+fi
-MOUNT="/bin/mount"
PMOUNT="/usr/bin/pmount"
-UMOUNT="/bin/umount"
+
for line in `grep -h -v ^# /etc/udev/mount.blacklist
/etc/udev/mount.blacklist.d/*`
do
if [ ` expr match "$DEVNAME" "$line" ` -gt 0 ];
@@ -17,7 +35,35 @@ do
fi
done
-automount() {
+automount_systemd() {
+ name="`basename "$DEVNAME"`"
+
+ [ -d "/run/media/$name" ] || mkdir -p "/run/media/$name"
+
+ MOUNT="$MOUNT -o silent"
+
+ # If filesystemtype is vfat, change the ownership group to
'disk', and
+ # grant it with w/r/x permissions.
+ case $ID_FS_TYPE in
+ vfat|fat)
+ MOUNT="$MOUNT -o umask=007,gid=`awk -F':' '/^disk/{print
$3}' /etc/group`"
+ ;;
+ # TODO
+ *)
+ ;;
+ esac
+
+ if ! $MOUNT --no-block -t auto $DEVNAME "/run/media/$name"
+ then
+ #logger "mount.sh/automount" "$MOUNT -t auto $DEVNAME
\"/run/media/$name\" failed!"
+ rm_dir "/run/media/$name"
+ else
+ logger "mount.sh/automount" "Auto-mount of
[/run/media/$name] successful"
+ touch "/tmp/.automount-$name"
+ fi
+}
+
+automount() {
name="`basename "$DEVNAME"`"
! test -d "/run/media/$name" && mkdir -p "/run/media/$name"
@@ -26,7 +72,7 @@ automount() {
then
MOUNT="$MOUNT -o silent"
fi
-
+
# If filesystem type is vfat, change the ownership group to
'disk', and
# grant it with w/r/x permissions.
case $ID_FS_TYPE in
@@ -68,23 +114,26 @@ if [ "$ACTION" = "add" ] && [ -n "$DEVNAME" ]
&& [ -n "$ID_FS_TYPE" -o "$media_t
elif [ -x $MOUNT ]; then
$MOUNT $DEVNAME 2> /dev/null
fi
-
+
# If the device isn't mounted at this point, it isn't
# configured in fstab (note the root filesystem can show up as
# /dev/root in /proc/mounts, so check the device number too)
- if expr $MAJOR "*" 256 + $MINOR != `stat -c %d /`; then
- grep -q "^$DEVNAME " /proc/mounts || automount
- fi
+ if expr $MAJOR "*" 256 + $MINOR != `stat -c %d /`; then
+ if [ "`basename $MOUNT`" = "systemd-mount" ];then
+ grep -q "^$DEVNAME " /proc/mounts || automount_systemd
+ else
+ grep -q "^$DEVNAME " /proc/mounts || automount
+ fi
+ fi
fi
-
if [ "$ACTION" = "remove" ] || [ "$ACTION" = "change" ] && [ -x
"$UMOUNT" ] && [ -n "$DEVNAME" ]; then
- for mnt in `cat /proc/mounts | grep "$DEVNAME" | cut -f 2 -d
" " `
- do
- $UMOUNT $mnt
- done
-
- # Remove empty directories from auto-mounter
- name="`basename "$DEVNAME"`"
- test -e "/tmp/.automount-$name" && rm_dir "/run/media/$name"
+ for mnt in `cat /proc/mounts | grep "$DEVNAME" | cut -f 2 -d
" " `
+ do
+ $UMOUNT $mnt
+ done
+
+ # Remove empty directories from auto-mounter
+ name="`basename "$DEVNAME"`"
+ test -e "/tmp/.automount-$name" && rm_dir "/run/media/$name"
fi
diff --git a/meta/recipes-core/udev/udev-extraconf_1.1.bb
b/meta/recipes-core/udev/udev-extraconf_1.1.bb
index 43a1cff..90f933d 100644
--- a/meta/recipes-core/udev/udev-extraconf_1.1.bb
+++ b/meta/recipes-core/udev/udev-extraconf_1.1.bb
@@ -29,6 +29,9 @@ do_install() {
install -d ${D}${sysconfdir}/udev/scripts/
install -m 0755 ${WORKDIR}/mount.sh
${D}${sysconfdir}/udev/scripts/mount.sh
+ sed -i 's|@systemd_unitdir@|${systemd_unitdir}|g'
${D}${sysconfdir}/udev/scripts/mount.sh
+ sed -i 's|@base_sbindir@|${base_sbindir}|g'
${D}${sysconfdir}/udev/scripts/mount.sh
+
install -m 0755 ${WORKDIR}/network.sh
${D}${sysconfdir}/udev/scripts
}
