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md/array_state in case of partition doesn't exist, so all uevents
for partitions didn't execute any SYMLINK rules
Signed-off-by: Michal Soltys <soltys@ziu.info>
There's still a slight race condition when using udevadm settle, if the
udev daemon has a pending inotify event but hasn't yet generated the
"change" uevent for it, the kernel and udev sequence numbers will match
and settle will exit.
Now udevadm settle will send a control message to udevd, which will
respond by sending SIGUSR1 back to the waiting udevadm settle once it
has completed the main loop iteration in which it received the control
message.
If there were no pending inotify events, this will simply wake up the
udev daemon and allow settle to continue. If there are pending inotify
events, they are handled first in the main loop so when settle is
continued they will have been turned into uevents and the kernel
sequence number will have been incremented.
Since the inotify event is pending for udevd when the close() system
call returns (it's queued as part of the kernel handling for that system
call), and since the kernel sequence number is incremented by writing to
the uevent file (as udevd does), this solves the race.
When the settle continues, if there were pending inotify events that
udevd had not read, they are now pending uevents which settle can wait
for.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
It might be useful in some cases not to wait for "all" events.
$ read START < /sys/kernel/uevent_seqnum
$ (do something which may create uevents)
$ udevadm settle --seq-start=$START
In my scenario, the ntfs prober did *not* detect the presence of a
ntfs filesystem (i.e. vol_id --probe-all returned *only* ext3).
However, if you examine the source of the ntfs prober, it overwrites
the uuid field of the volume_id object long before it actually
decides there's a valid filesystem there - this resulted in vol_id
returning the rather bizarre combination of type=ext3, but a uuid
populated by the ntfs prober.
https://bugs.edge.launchpad.net/ubuntu/+source/udev/+bug/337015
When building with './configure --enable-debug && make' it fails with:
udev-rules.c: In function ‘dump_token’:
udev-rules.c:366: error: ‘struct <anonymous>’ has no member named ‘i’
Signed-off-by: Michael Prokop <mika@grml.org>
So ID_MODEL and ID_VENDOR are pretty useful keys. However since we fix
them up (removing leading/trailing whitespace, converts spaces to
underscores) for use in device naming etc. we also force these fixups on
the desktop shell. And this looks pretty ugly.
The attached patch introduces the ID_MODEL_ENC and ID_VENDOR_ENC keys
that contains the encoded version of the raw strings obtained. It's
pretty similar in spirit to ID_FS_LABEL and its cousin ID_FS_LABEL_ENC.
With this patch a desktop shell can fix up these strings as it sees fit.
Note that some fixup is still needed though, for example
# /lib/udev/ata_id --export /dev/sda |grep ID_MODEL
ID_MODEL=INTEL_SSDSA2MH080G1GC
ID_MODEL_ENC=INTEL\x20SSDSA2MH080G1GC\x20\x20\x20\x20\x20\x20\x20\x20
\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
Note the trailing and leading whitespace. Anyway with the attached patch
the desktop shell should be able to display "INTEL SSDSA2MH080G1GC"
rather than "INTEL_SSDSA2MH080G1GC" to the user.
This allows you to re-process the rules if the content of the device
has been changed, most useful for block subsystem to cause vol_id to
be run again.
