Link: https://lore.kernel.org/r/20230320125430.55367-1-hch@xxxxxx/ Suggested-by: Chaitanya Kulkarni <chaitanyak@xxxxxxxxxx> Signed-off-by: Alyssa Ross <hi@xxxxxxxxx> --- tests/loop/009 | 62 ++++++++++++++++++++++++++++++++++++++++++++++ tests/loop/009.out | 3 +++ 2 files changed, 65 insertions(+) create mode 100755 tests/loop/009 create mode 100644 tests/loop/009.out diff --git a/tests/loop/009 b/tests/loop/009 new file mode 100755 index 0000000..dfa9de3 --- /dev/null +++ b/tests/loop/009 @@ -0,0 +1,62 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-3.0+ +# Copyright 2023 Alyssa Ross +# +# Regression test for patch "loop: LOOP_CONFIGURE: send uevents for partitions". + +. tests/loop/rc + +DESCRIPTION="check that LOOP_CONFIGURE sends uevents for partitions" + +QUICK=1 + +test() { + echo "Running ${TEST_NAME}" + + # Make a disk image with a partition. + truncate -s 3MiB "$TMPDIR/img" + sfdisk "$TMPDIR/img" >"$FULL" <<EOF +label: gpt +size=1MiB +EOF + + mkfifo "$TMPDIR/mon" + timeout 5 udevadm monitor -ks block/partition >"$TMPDIR/mon" & + + # Open the fifo for reading, and wait for udevadm monitor to start. + exec 3< "$TMPDIR/mon" + read -r _ <&3 + read -r _ <&3 + read -r _ <&3 + + dev="$(losetup -f)" + + # The default udev behavior is to watch loop devices, which means that + # udevd will explicitly prompt the kernel to rescan the partitions with + # ioctl(BLKRRPART). We want to make sure we're getting uevents from + # ioctl(LOOP_CONFIGURE), so disable this udev behavior for our device to + # avoid false positives. + echo "ACTION!=\"remove\", KERNEL==\"${dev#/dev/}\", OPTIONS+=\"nowatch\"" \ + >/run/udev/rules.d/99-blktests-$$.rules + udevadm control -R + + # Open and close the loop device for writing, to trigger the inotify + # event udevd had already started listening for. + : > "$dev" + + # Wait for udev to have processed the inotify event. + udevadm control --ping + + losetup -P "$dev" "$TMPDIR/img" + + # Wait for at most 1 add event so we don't need to wait for timeout if + # we get what we're looking for. + <&3 grep -m 1 '^KERNEL\[.*\] add' | + sed -e 's/\[.*\]//' -e 's/loop[0-9]\+/loop_/g' + + rm /run/udev/rules.d/99-blktests-$$.rules + udevadm control -R + losetup -d "$dev" + + echo "Test complete" +} diff --git a/tests/loop/009.out b/tests/loop/009.out new file mode 100644 index 0000000..658dcff --- /dev/null +++ b/tests/loop/009.out @@ -0,0 +1,3 @@ +Running loop/009 +KERNEL add /devices/virtual/block/loop_/loop_p1 (block) +Test complete -- 2.37.1
