mirror of
https://github.com/morgan9e/systemd
synced 2026-04-15 00:47:10 +09:00
0d76f1c423
09fbff57fc introduced new knob
for such functionality. However, that seems unnecessary.
The mount option string is ubiquitous in that all of fstab,
kernel cmdline, credentials, systemd-mount, ... speak it.
And we already have x-systemd.device-bound= that's parsed
by pid1 instead of fstab-generator. It feels hence more natural
for graceful options to be an extension of that, rather than
its own property.
There's also one nice side effect that the setting itself
is now more graceful for systemd versions not supporting
such feature.
190 lines
8.2 KiB
Bash
Executable File
190 lines
8.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -eux
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set -o pipefail
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# shellcheck source=test/units/util.sh
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. "$(dirname "$0")"/util.sh
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at_exit() {
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set +e
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[[ -n "${LOOP:-}" ]] && losetup -d "$LOOP"
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[[ -n "${WORK_DIR:-}" ]] && rm -fr "$WORK_DIR"
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}
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(! systemd-detect-virt -cq)
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trap at_exit EXIT
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WORK_DIR="$(mktemp -d)"
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mkdir -p "$WORK_DIR/mnt"
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systemd-mount --list
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systemd-mount --list --full
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systemd-mount --list --no-legend
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systemd-mount --list --no-pager
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systemd-mount --list --quiet
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systemd-mount --list --json=pretty
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# tmpfs
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mkdir -p "$WORK_DIR/mnt/foo/bar"
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systemd-mount --tmpfs "$WORK_DIR/mnt/foo"
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test ! -d "$WORK_DIR/mnt/foo/bar"
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touch "$WORK_DIR/mnt/foo/baz"
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systemd-umount "$WORK_DIR/mnt/foo"
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test -d "$WORK_DIR/mnt/foo/bar"
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test ! -e "$WORK_DIR/mnt/foo/baz"
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# overlay
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systemd-mount --type=overlay --options="lowerdir=/etc,upperdir=$WORK_DIR/upper,workdir=$WORK_DIR/work" /etc "$WORK_DIR/overlay"
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touch "$WORK_DIR/overlay/foo"
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test -e "$WORK_DIR/upper/foo"
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systemd-umount "$WORK_DIR/overlay"
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# Set up a simple block device for further tests
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dd if=/dev/zero of="$WORK_DIR/simple.img" bs=1M count=16
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mkfs.ext4 -L sd-mount-test "$WORK_DIR/simple.img"
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LOOP="$(losetup --show --find "$WORK_DIR/simple.img")"
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udevadm wait --timeout 60 --settle "$LOOP"
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# Also wait for the .device unit for the loop device is active. Otherwise, the .device unit activation
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# that is triggered by the .mount unit introduced by systemd-mount below may time out.
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timeout 60 bash -c "until systemctl is-active $LOOP; do sleep 1; done"
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mount "$LOOP" "$WORK_DIR/mnt"
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touch "$WORK_DIR/mnt/foo.bar"
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umount "$LOOP"
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(! mountpoint "$WORK_DIR/mnt")
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# Wait for the mount unit to be unloaded. Otherwise, creation of the transient unit below may fail.
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MOUNT_UNIT=$(systemd-escape --path --suffix=mount "$WORK_DIR/mnt")
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timeout 60 bash -c "while [[ -n \$(systemctl list-units --all --no-legend $MOUNT_UNIT) ]]; do sleep 1; done"
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# Mount with both source and destination set
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systemd-mount "$LOOP" "$WORK_DIR/mnt"
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systemctl status "$WORK_DIR/mnt"
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systemd-mount --list --full
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test -e "$WORK_DIR/mnt/foo.bar"
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systemd-umount "$WORK_DIR/mnt"
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# Same thing, but with explicitly specified filesystem and disabled filesystem check
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systemd-mount --type=ext4 --fsck=no --collect "$LOOP" "$WORK_DIR/mnt"
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systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").mount"
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test -e "$WORK_DIR/mnt/foo.bar"
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systemd-mount --umount "$LOOP"
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# Discover additional metadata (unit description should now contain filesystem label)
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systemd-mount --no-ask-password --discover "$LOOP" "$WORK_DIR/mnt"
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test -e "$WORK_DIR/mnt/foo.bar"
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systemctl show -P Description "$WORK_DIR/mnt" | grep -q sd-mount-test
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systemd-umount "$WORK_DIR/mnt"
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# Set a unit description
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systemd-mount --description="Very Important Unit" "$LOOP" "$WORK_DIR/mnt"
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test -e "$WORK_DIR/mnt/foo.bar"
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systemctl show -P Description "$WORK_DIR/mnt" | grep -q "Very Important Unit"
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systemd-umount "$WORK_DIR/mnt"
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# Set a property
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systemd-mount --property="Description=Foo Bar" "$LOOP" "$WORK_DIR/mnt"
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test -e "$WORK_DIR/mnt/foo.bar"
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systemctl show -P Description "$WORK_DIR/mnt" | grep -q "Foo Bar"
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systemd-umount "$WORK_DIR/mnt"
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# Set mount options
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systemd-mount --options=ro,x-foo-bar "$LOOP" "$WORK_DIR/mnt"
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test -e "$WORK_DIR/mnt/foo.bar"
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systemctl show -P Options "$WORK_DIR/mnt" | grep -Eq "(^ro|,ro)"
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systemctl show -P Options "$WORK_DIR/mnt" | grep -q "x-foo-bar"
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systemd-umount "$WORK_DIR/mnt"
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# Mount with only source set
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systemd-mount "$LOOP"
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systemctl status /run/media/system/sd-mount-test
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systemd-mount --list --full
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test -e /run/media/system/sd-mount-test/foo.bar
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systemd-umount LABEL=sd-mount-test
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# Automount
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systemd-mount --automount=yes "$LOOP" "$WORK_DIR/mnt"
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systemd-mount --list --full
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systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").automount"
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[[ "$(systemctl show -P ActiveState "$WORK_DIR/mnt")" == inactive ]]
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test -e "$WORK_DIR/mnt/foo.bar"
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systemctl status "$WORK_DIR/mnt"
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systemd-umount "$WORK_DIR/mnt"
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# Automount + automount-specific property
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systemd-mount -A --automount-property="Description=Bar Baz" "$LOOP" "$WORK_DIR/mnt"
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systemctl show -P Description "$(systemd-escape --path "$WORK_DIR/mnt").automount" | grep -q "Bar Baz"
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test -e "$WORK_DIR/mnt/foo.bar"
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# Call --umount via --machine=, first with a relative path (bad) and then with
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# an absolute one (good)
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(! systemd-umount --machine=.host "$(realpath --relative-to=. "$WORK_DIR/mnt")")
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systemd-umount --machine=.host "$WORK_DIR/mnt"
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# ext4 doesn't support uid=/gid=
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(! systemd-mount -t ext4 --owner=testuser "$LOOP" "$WORK_DIR/mnt")
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# Automount + --bind-device
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systemd-mount --automount=yes --bind-device --timeout-idle-sec=1 "$LOOP" "$WORK_DIR/mnt"
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systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").automount"
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# Trigger the automount
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test -e "$WORK_DIR/mnt/foo.bar"
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# Wait until it's idle again
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sleep 1.5
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# Safety net for slower/overloaded systems
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timeout 10s bash -c "while systemctl is-active -q $WORK_DIR/mnt; do sleep .2; done"
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systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").automount"
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# Disassemble the underlying block device
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losetup -d "$LOOP"
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unset LOOP
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# The automount unit should disappear once the underlying blockdev is gone
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timeout 10s bash -c "while systemctl status '$(systemd-escape --path "$WORK_DIR/mnt".automount)'; do sleep .2; done"
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# Mount a disk image
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systemd-mount --discover "$WORK_DIR/simple.img"
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# We can access files in the image even if the loopback block device is not initialized by udevd.
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test -e /run/media/system/simple.img/foo.bar
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# systemd-mount --list and systemd-umount require the loopback block device is initialized by udevd.
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udevadm settle --timeout 30
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assert_in "/dev/loop.* ext4 +sd-mount-test" "$(systemd-mount --list --full)"
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LOOP_AUTO=$(systemd-mount --list --full --no-legend | awk '$7 == "sd-mount-test" { print $1 }')
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LOOP_AUTO_DEVPATH=$(udevadm info --query property --property DEVPATH --value "$LOOP_AUTO")
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systemd-umount "$WORK_DIR/simple.img"
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# Wait for 'change' uevent for the device with DISK_MEDIA_CHANGE=1.
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# After the event, the backing_file attribute should be removed.
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timeout 60 bash -c "while [[ -e /sys/$LOOP_AUTO_DEVPATH/loop/backing_file ]]; do sleep 1; done"
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# --owner + vfat
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#
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# Create a vfat image, as ext4 doesn't support uid=/gid= fixating for all
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# files/directories
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dd if=/dev/zero of="$WORK_DIR/owner-vfat.img" bs=1M count=16
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mkfs.vfat -n owner-vfat "$WORK_DIR/owner-vfat.img"
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LOOP="$(losetup --show --find "$WORK_DIR/owner-vfat.img")"
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# If the synthesized uevent triggered by inotify event has been processed earlier than the kernel finishes to
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# attach the backing file, then SYSTEMD_READY=0 is set for the device. As a workaround, monitor sysattr
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# and re-trigger uevent after that.
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LOOP_DEVPATH=$(udevadm info --query property --property DEVPATH --value "$LOOP")
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timeout 60 bash -c "until [[ -e /sys/$LOOP_DEVPATH/loop/backing_file ]]; do sleep 1; done"
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udevadm trigger --settle "$LOOP"
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# Also wait for the .device unit for the loop device is active. Otherwise, the .device unit activation
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# that is triggered by the .mount unit introduced by systemd-mount below may time out.
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if ! timeout 60 bash -c "until systemctl is-active $LOOP; do sleep 1; done"; then
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# For debugging issue like
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# https://github.com/systemd/systemd/issues/32680#issuecomment-2120959238
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# https://github.com/systemd/systemd/issues/32680#issuecomment-2122074805
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udevadm info "$LOOP"
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udevadm info --attribute-walk "$LOOP"
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cat /sys/"$(udevadm info --query property --property DEVPATH --value "$LOOP")"/loop/backing_file || :
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false
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fi
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# Mount it and check the UID/GID
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[[ "$(stat -c "%U:%G" "$WORK_DIR/mnt")" == "root:root" ]]
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systemd-mount --owner=testuser "$LOOP" "$WORK_DIR/mnt"
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systemctl status "$WORK_DIR/mnt"
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[[ "$(stat -c "%U:%G" "$WORK_DIR/mnt")" == "testuser:testuser" ]]
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touch "$WORK_DIR/mnt/hello"
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[[ "$(stat -c "%U:%G" "$WORK_DIR/mnt/hello")" == "testuser:testuser" ]]
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systemd-umount LABEL=owner-vfat
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# Make sure that graceful mount options work
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GRACEFULTEST="/tmp/graceful/$RANDOM"
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systemd-mount --tmpfs --options="x-systemd.graceful-option=idefinitelydontexist,x-systemd.graceful-option=nr_inodes=4711,x-systemd.graceful-option=idonexisteither" "$GRACEFULTEST"
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findmnt -n -o options "$GRACEFULTEST"
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findmnt -n -o options "$GRACEFULTEST" | grep -q nr_inodes=4711
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umount "$GRACEFULTEST"
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