test/units/TEST-87-AUX-UTILS-VM.mount.sh

   1 #!/usr/bin/env bash
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   3 set -eux
   4 set -o pipefail
   5
   6 # shellcheck source=test/units/util.sh
   7 . "$(dirname "$0")"/util.sh
   8
   9 at_exit() {
  10     set +e
  11
  12     [[ -n "${LOOP:-}" ]] && losetup -d "$LOOP"
  13     [[ -n "${WORK_DIR:-}" ]] && rm -fr "$WORK_DIR"
  14 }
  15
  16 (! systemd-detect-virt -cq)
  17
  18 trap at_exit EXIT
  19
  20 WORK_DIR="$(mktemp -d)"
  21 mkdir -p "$WORK_DIR/mnt"
  22
  23 systemd-mount --list
  24 systemd-mount --list --full
  25 systemd-mount --list --no-legend
  26 systemd-mount --list --no-pager
  27 systemd-mount --list --quiet
  28 systemd-mount --list --json=pretty
  29
  30 # tmpfs
  31 mkdir -p "$WORK_DIR/mnt/foo/bar"
  32 systemd-mount --tmpfs "$WORK_DIR/mnt/foo"
  33 test ! -d "$WORK_DIR/mnt/foo/bar"
  34 touch "$WORK_DIR/mnt/foo/baz"
  35 systemd-umount "$WORK_DIR/mnt/foo"
  36 test -d "$WORK_DIR/mnt/foo/bar"
  37 test ! -e "$WORK_DIR/mnt/foo/baz"
  38
  39 # overlay
  40 systemd-mount --type=overlay --options="lowerdir=/etc,upperdir=$WORK_DIR/upper,workdir=$WORK_DIR/work" /etc "$WORK_DIR/overlay"
  41 touch "$WORK_DIR/overlay/foo"
  42 test -e "$WORK_DIR/upper/foo"
  43 systemd-umount "$WORK_DIR/overlay"
  44
  45 # Set up a simple block device for further tests
  46 dd if=/dev/zero of="$WORK_DIR/simple.img" bs=1M count=16
  47 mkfs.ext4 -L sd-mount-test "$WORK_DIR/simple.img"
  48 LOOP="$(losetup --show --find "$WORK_DIR/simple.img")"
  49 udevadm wait --timeout 60 --settle "$LOOP"
  50 # Also wait for the .device unit for the loop device is active. Otherwise, the .device unit activation
  51 # that is triggered by the .mount unit introduced by systemd-mount below may time out.
  52 timeout 60 bash -c "until systemctl is-active $LOOP; do sleep 1; done"
  53 mount "$LOOP" "$WORK_DIR/mnt"
  54 touch "$WORK_DIR/mnt/foo.bar"
  55 umount "$LOOP"
  56 (! mountpoint "$WORK_DIR/mnt")
  57 # Wait for the mount unit to be unloaded. Otherwise, creation of the transient unit below may fail.
  58 MOUNT_UNIT=$(systemd-escape --path --suffix=mount "$WORK_DIR/mnt")
  59 timeout 60 bash -c "while [[ -n \$(systemctl list-units --all --no-legend $MOUNT_UNIT) ]]; do sleep 1; done"
  60
  61 # Mount with both source and destination set
  62 systemd-mount "$LOOP" "$WORK_DIR/mnt"
  63 systemctl status "$WORK_DIR/mnt"
  64 systemd-mount --list --full
  65 test -e "$WORK_DIR/mnt/foo.bar"
  66 systemd-umount "$WORK_DIR/mnt"
  67 # Same thing, but with explicitly specified filesystem and disabled filesystem check
  68 systemd-mount --type=ext4 --fsck=no --collect "$LOOP" "$WORK_DIR/mnt"
  69 systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").mount"
  70 test -e "$WORK_DIR/mnt/foo.bar"
  71 systemd-mount --umount "$LOOP"
  72 # Discover additional metadata (unit description should now contain filesystem label)
  73 systemd-mount --no-ask-password --discover "$LOOP" "$WORK_DIR/mnt"
  74 test -e "$WORK_DIR/mnt/foo.bar"
  75 systemctl show -P Description "$WORK_DIR/mnt" | grep -q sd-mount-test
  76 systemd-umount "$WORK_DIR/mnt"
  77 # Set a unit description
  78 systemd-mount --description="Very Important Unit" "$LOOP" "$WORK_DIR/mnt"
  79 test -e "$WORK_DIR/mnt/foo.bar"
  80 systemctl show -P Description "$WORK_DIR/mnt" | grep -q "Very Important Unit"
  81 systemd-umount "$WORK_DIR/mnt"
  82 # Set a property
  83 systemd-mount --property="Description=Foo Bar" "$LOOP" "$WORK_DIR/mnt"
  84 test -e "$WORK_DIR/mnt/foo.bar"
  85 systemctl show -P Description "$WORK_DIR/mnt" | grep -q "Foo Bar"
  86 systemd-umount "$WORK_DIR/mnt"
  87 # Set mount options
  88 systemd-mount --options=ro,x-foo-bar "$LOOP" "$WORK_DIR/mnt"
  89 test -e "$WORK_DIR/mnt/foo.bar"
  90 systemctl show -P Options "$WORK_DIR/mnt" | grep -Eq "(^ro|,ro)"
  91 systemctl show -P Options "$WORK_DIR/mnt" | grep -q "x-foo-bar"
  92 systemd-umount "$WORK_DIR/mnt"
  93
  94 # Mount with only source set
  95 systemd-mount "$LOOP"
  96 systemctl status /run/media/system/sd-mount-test
  97 systemd-mount --list --full
  98 test -e /run/media/system/sd-mount-test/foo.bar
  99 systemd-umount LABEL=sd-mount-test
 100
 101 # Automount
 102 systemd-mount --automount=yes "$LOOP" "$WORK_DIR/mnt"
 103 systemd-mount --list --full
 104 systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").automount"
 105 [[ "$(systemctl show -P ActiveState "$WORK_DIR/mnt")" == inactive ]]
 106 test -e "$WORK_DIR/mnt/foo.bar"
 107 systemctl status "$WORK_DIR/mnt"
 108 systemd-umount "$WORK_DIR/mnt"
 109 # Automount + automount-specific property
 110 systemd-mount -A --automount-property="Description=Bar Baz" "$LOOP" "$WORK_DIR/mnt"
 111 systemctl show -P Description "$(systemd-escape --path "$WORK_DIR/mnt").automount" | grep -q "Bar Baz"
 112 test -e "$WORK_DIR/mnt/foo.bar"
 113 # Call --umount via --machine=, first with a relative path (bad) and then with
 114 # an absolute one (good)
 115 (! systemd-umount --machine=.host "$(realpath --relative-to=. "$WORK_DIR/mnt")")
 116 systemd-umount --machine=.host "$WORK_DIR/mnt"
 117
 118 # ext4 doesn't support uid=/gid=
 119 (! systemd-mount -t ext4 --owner=testuser "$LOOP" "$WORK_DIR/mnt")
 120
 121 # Automount + --bind-device
 122 systemd-mount --automount=yes --bind-device --timeout-idle-sec=1 "$LOOP" "$WORK_DIR/mnt"
 123 systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").automount"
 124 # Trigger the automount
 125 test -e "$WORK_DIR/mnt/foo.bar"
 126 # Wait until it's idle again
 127 sleep 1.5
 128 # Safety net for slower/overloaded systems
 129 timeout 10s bash -c "while systemctl is-active -q $WORK_DIR/mnt; do sleep .2; done"
 130 systemctl status "$(systemd-escape --path "$WORK_DIR/mnt").automount"
 131 # Disassemble the underlying block device
 132 losetup -d "$LOOP"
 133 unset LOOP
 134 # The automount unit should disappear once the underlying blockdev is gone
 135 timeout 10s bash -c "while systemctl status '$(systemd-escape --path "$WORK_DIR/mnt".automount)'; do sleep .2; done"
 136
 137 # Mount a disk image
 138 systemd-mount --discover "$WORK_DIR/simple.img"
 139 # We can access files in the image even if the loopback block device is not initialized by udevd.
 140 test -e /run/media/system/simple.img/foo.bar
 141 # systemd-mount --list and systemd-umount require the loopback block device is initialized by udevd.
 142 udevadm settle --timeout 30
 143 assert_in "/dev/loop.* ext4 +sd-mount-test" "$(systemd-mount --list --full)"
 144 LOOP_AUTO=$(systemd-mount --list --full --no-legend | awk '$7 == "sd-mount-test" { print $1 }')
 145 LOOP_AUTO_DEVPATH=$(udevadm info --query property --property DEVPATH --value "$LOOP_AUTO")
 146 systemd-umount "$WORK_DIR/simple.img"
 147 # Wait for 'change' uevent for the device with DISK_MEDIA_CHANGE=1.
 148 # After the event, the backing_file attribute should be removed.
 149 timeout 60 bash -c "while [[ -e /sys/$LOOP_AUTO_DEVPATH/loop/backing_file ]]; do sleep 1; done"
 150
 151 # --owner + vfat
 152 #
 153 # Create a vfat image, as ext4 doesn't support uid=/gid= fixating for all
 154 # files/directories
 155 dd if=/dev/zero of="$WORK_DIR/owner-vfat.img" bs=1M count=16
 156 mkfs.vfat -n owner-vfat "$WORK_DIR/owner-vfat.img"
 157 LOOP="$(losetup --show --find "$WORK_DIR/owner-vfat.img")"
 158 # If the synthesized uevent triggered by inotify event has been processed earlier than the kernel finishes to
 159 # attach the backing file, then SYSTEMD_READY=0 is set for the device. As a workaround, monitor sysattr
 160 # and re-trigger uevent after that.
 161 LOOP_DEVPATH=$(udevadm info --query property --property DEVPATH --value "$LOOP")
 162 timeout 60 bash -c "until [[ -e /sys/$LOOP_DEVPATH/loop/backing_file ]]; do sleep 1; done"
 163 udevadm trigger --settle "$LOOP"
 164 # Also wait for the .device unit for the loop device is active. Otherwise, the .device unit activation
 165 # that is triggered by the .mount unit introduced by systemd-mount below may time out.
 166 if ! timeout 60 bash -c "until systemctl is-active $LOOP; do sleep 1; done"; then
 167     # For debugging issue like
 168     # https://github.com/systemd/systemd/issues/32680#issuecomment-2120959238
 169     # https://github.com/systemd/systemd/issues/32680#issuecomment-2122074805
 170     udevadm info "$LOOP"
 171     udevadm info --attribute-walk "$LOOP"
 172     cat /sys/"$(udevadm info --query property --property DEVPATH --value "$LOOP")"/loop/backing_file || :
 173     false
 174 fi
 175 # Mount it and check the UID/GID
 176 [[ "$(stat -c "%U:%G" "$WORK_DIR/mnt")" == "root:root" ]]
 177 systemd-mount --owner=testuser "$LOOP" "$WORK_DIR/mnt"
 178 systemctl status "$WORK_DIR/mnt"
 179 [[ "$(stat -c "%U:%G" "$WORK_DIR/mnt")" == "testuser:testuser" ]]
 180 touch "$WORK_DIR/mnt/hello"
 181 [[ "$(stat -c "%U:%G" "$WORK_DIR/mnt/hello")" == "testuser:testuser" ]]
 182 systemd-umount LABEL=owner-vfat
 183
 184 # Mkae sure that graceful mount options work
 185 GRACEFULTEST="/tmp/graceful/$RANDOM"
 186 systemd-mount --tmpfs -p GracefulOptions=idefinitelydontexist,nr_inodes=4711,idonexisteither "$GRACEFULTEST"
 187 findmnt -n -o options "$GRACEFULTEST"
 188 findmnt -n -o options "$GRACEFULTEST" | grep -q nr_inodes=4711
 189 umount "$GRACEFULTEST"