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9422ce83c2
Loopback block devices are agressively reused, without being removed in between. This means various inode attributes on their device nodes will – so far – remain in effect between uses of the devices. Since there are applications which change access mode/ownership of such devices after attaching files to them, let's undo this again when we detect them to be unused again. Fixes: #37745
17 lines
910 B
Plaintext
17 lines
910 B
Plaintext
# do not edit this file, it will be overwritten on update
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# enable in-kernel media-presence polling
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ACTION=="add", SUBSYSTEM=="module", KERNEL=="block", ATTR{parameters/events_dfl_poll_msecs}=="0", \
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ATTR{parameters/events_dfl_poll_msecs}="2000"
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# forward scsi device event to corresponding block device
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ACTION=="change", SUBSYSTEM=="scsi", ENV{DEVTYPE}=="scsi_device", TEST=="block", ATTR{block/*/uevent}="change"
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# watch metadata changes, caused by tools closing the device node which was opened for writing
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ACTION!="remove", SUBSYSTEM=="block", \
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KERNEL=="loop*|mmcblk*[0-9]|msblk*[0-9]|mspblk*[0-9]|nvme*|sd*|vd*|xvd*|bcache*|cciss*|dasd*|ubd*|ubi*|scm*|pmem*|nbd*|zd*|rbd*|zram*|ublkb*", \
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OPTIONS+="watch"
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# Reset access rights to each loopback device once it gets detached.
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SUBSYSTEM=="block", ACTION=="change", ENV{DISK_MEDIA_CHANGE}=="1", TEST!="loop/backing_file", GROUP="disk", MODE="660"
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