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For added protection, ignore any unicast message received on the
netlink socket or any multicast message on the kernel group not
received from the kernel.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
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Sebastian Krahmer wrote:
> it should reserve 4 times not 3 times len :)
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The netlink socket is now used by udev event processes. We should take
care not to pass it to the programs they execute. This is the same way
the inotify fd was handled.
Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
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Instead of of our own private monitor socket, we send the
processed event back to our netlink socket, to the multicast
group 2 -- so any number of users can listen to udev events,
just like they can listen to kernel emitted events on group 1.
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$ extras/usb_id/usb_id -x /class/tty/ttyUSB1
ID_VENDOR=HUAWEI_Technology
ID_VENDOR_ENC=HUAWEI\x20Technology
ID_VENDOR_ID=12d1
ID_MODEL=HUAWEI_Mobile
ID_MODEL_ENC=HUAWEI\x20Mobile
ID_MODEL_ID=1003
ID_REVISION=0000
ID_SERIAL=HUAWEI_Technology_HUAWEI_Mobile
ID_TYPE=generic
ID_BUS=usb
ID_USB_INTERFACES=:ffffff:080650:
ID_USB_INTERFACE_NUM=01
ID_USB_DRIVER=option
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The driver's name changed in the 2.6.28 timeframe.
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On Wed, Mar 18, 2009 at 16:00, Matthias Schwarzott <zzam@gentoo.org> wrote:
found out how the error occurs:
It is a difference between
A. udevadm test /sys/class/mem/null/
and
B. udevadm test /sys/class/mem/null
Case A was the case that showed the error behaviour. It seems udevadm is
confused by the trailing slash. This behaviour seems to be there since ages.
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Patch from Gerardo Exequiel Pozzi.
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The documentation for the --offset option wasn't in complete
sentences.
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
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Include a table of what the CMOS types are, and note that nothing
will be created unless the -t option is specified. Also clean up
the formatting and bump the date.
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
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Include usage information on the -d/--debug flag. Also bump the date.
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
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Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
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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>
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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>
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Because you added the symbol volume_id_set_uuid_sub() in commit
14e18278, you have to increase the library minor version.
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Some broken tools get confused following links to /sys, switch
to link targets carrying the devpath instead of the syspath, like
the queue links.
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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
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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
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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>
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