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Here is the patch, that should prevent all of the known deadlocks with
corrupt tdb databases we discovered.
Thanks to Frank Steiner <fsteiner-mail@bio.ifi.lmu.de>, who tested all this
endlessly with a NFS mounted /dev. The conclusion is, that udev will not work
on filesystems without proper record locking, but we should prevent the
endless loops anyway. This patch implements:
o recovery from a corrupted udev database. udev will continue
without database support now, instead of doing nothing. So the node should
be generated in any case, remove will obviously not work for custom names.
o added iteration limits to the tdb-code at the places we discovered endless
loops. In the case tdb tries to find more than 100.000 entries with the
same hash, we better give up :)
o prevent a {all_partitions} loop caused by corrupt db data
o log all tdb errors to syslog
o switch sleep() to usleep() cause we want to use alarm()
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We should be consistent in our madness...
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handle some slow machines.
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Here is an update to wait_for_sysfs to print the udev version to syslog,
let hardware net interfaces wait again for the device link and
revert the video4linux to wait for the device. The error here was caused
by a out-of-tree media-driver, that needs the fix, not the our program.
I've added a small comment for that to the log as I expect more of this
to show up and the recent desktop integration work depends heavily on proper
sysfs support, so the drivers should be fixed.
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the rest of the world :(
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You should also remove etc/dev.d/default/dbus.dev which does not exist
anymore.
BTW, please remove etc/init.d/udev.debian because it is broken.
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out in debugging problems.
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Cset exclude: greg@kroah.com|ChangeSet|20041007204001|14326
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do not expect device symlinks for
This makes it a lot easier to test for these devices, otherwise the list would have gotten very large
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debug messages.
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Here is the file to wait for the bluetooth class, as it is not a "dev"
file. udev waits for 10 seconds here too.
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Here is the correction for the dev.d/ scripts too. We should pass
the right argv[0] here too. A script may depend on the right value, as
udev does with udev/udevstart.
Here is the old version:
[pid 4692] execve("/etc/dev.d/default/log.dev", ["./udev", "block"], [/* 41 vars */]) = 0
this the new one:
[pid 9832] execve("/etc/dev.d/default/log.dev", ["/etc/dev.d/default/log.dev", "block"], [/* 41 vars */]) = 0
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> Sorry, I left my debug code in.
Oops, just realized it now. You've applied a older version and not the
latest. Here is a new patch to catch up.
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also clean out some stuff in the makefile that was never getting used.
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when udevstart was running we didn't set the environment and the
subsystem argument for the callouts the dev.d/ scripts.
Here is a fix, that sets that with every udevstart iteration, corrects
argv[0] to be the basename() only not the whole path and adds a test
for invoking callouts without arguments.
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This is now a standalone package.
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Here is an update to the latest volume_id which fixes a few bugs with
FAT volumes.
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selinux wants a clean fd set, so better close all open fds
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posted by Steve Grubb on https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=130351
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posted by Steve Grubb on https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=130351
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see what is going on.
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and I told them to follow the proper coding style... bleah...
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Daniel Walsh's working selinux patch
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for "make install"
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Here is a revised version of the patch. Again, it modifies the Makefile
to respect the prefix= setting when putting paths to
/etc/udev/{rules.s,permissions.d} into the built /etc/udev/udev.conf
file. It also changes the Makefile to create this file at "make" time,
not "make install" time. This allows for udevdir to be specified at
"make" time (thus putting the correct path into udev.conf), but not
specified at "make install" time (thus allowing the installation to
proceed without trying to use the wrong directory).
Submitted By: Kevin P. Fleming <kpfleming@linuxfromscratch.org>
Date: 2004-09-16
Initial Package Version: 032
Origin: David Jensen
Description: correct udev's Makefile and template config file
to respect the "prefix=" setting supplied when it is built; also
build etc/udev/udev.conf at "make" time, not "make install" time
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On Tue, Sep 21, 2004 at 07:17:34PM +0200, Kay Sievers wrote:
> During the integration of HAL into the linux hotplug system, we dicover
> every week a new signaling path that fails cause of the delayed
> population of the sysfs files, which are connected by symlinks and
> appear in something like a random order in userspace.
>
> It's pretty complicated to understand the connection between all these
> files for all the different subsystems with all the exceptions, so most
> of the users simply sleep a few seconds, but that is not acceptable for
> our integration work.
>
> Here I try to get all the special knowledge about that behavior together
> and place that in a simple binary. That program _must_ run first of all
> other hotplug processsing and every later script, udev or HAL all can get
> rid of the wild guesses about the right time sysfs is ready.
>
> It will not only wait for the "dev"-file events we handle with udev, also
> for every /device-device with the corresponding bus link.
>
> It is provided as a patch against the current udev tree and a "install" will
> place the new program in the hotplug.d directory:
>
> [kay@pim ~]$ tree /etc/hotplug.d/
> /etc/hotplug.d/
> `-- default
> |-- 00-wait_for_sysfs.hotplug -> /sbin/wait_for_sysfs
> |-- 10-udev.hotplug -> /sbin/udevsend
> |-- 20-hal.hotplug -> /usr/libexec/hal.hotplug
> |-- default.hotplug
> `-- log.hotplug
>
>
> For now, it logs the result of the waiting to syslog, to catch any
> device, that needs special treatment. All newly discovered delay problems,
> device black/whitelist updates should go into that program and we may remove
> that kind of specialisation from all the other hotplug programs.
>
> Any patches, reports, testing is more than welcome.
>
> Sample debug:
> Sep 21 18:44:07 localhost kernel: usb 3-2: new full speed USB device using address 12
> Sep 21 18:44:07 localhost kernel: hub 3-2:1.0: USB hub found
> Sep 21 18:44:07 localhost kernel: hub 3-2:1.0: 2 ports detected
> Sep 21 18:44:07 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/devices/pci0000:00/0000:00:1d.1/usb3/3-2'
> Sep 21 18:44:07 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2:1.0'
> Sep 21 18:44:08 localhost kernel: usb 3-2.1: new full speed USB device using address 13
> Sep 21 18:44:08 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/class/usb/lp0'
> Sep 21 18:44:08 localhost kernel: drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 13 if 0 alt 1 proto 2 vid 0x067B pid 0x2305
> Sep 21 18:44:08 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2.1/3-2.1:1.0'
> Sep 21 18:44:08 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2.1'
> Sep 21 18:44:08 localhost udev: configured rule in '/etc/udev/rules.d/50-udev.rules' at line 29 applied, 'lp0' becomes 'usb/%k'
> Sep 21 18:44:08 localhost udev: creating device node '/udev/usb/lp0'
> Sep 21 18:44:09 localhost kernel: usb 3-2.2: new full speed USB device using address 14
> Sep 21 18:44:09 localhost kernel: pl2303 3-2.2:1.0: PL-2303 converter detected
> Sep 21 18:44:09 localhost kernel: usb 3-2.2: PL-2303 converter now attached to ttyUSB0
> Sep 21 18:44:09 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2.2'
> Sep 21 18:44:09 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2.2/3-2.2:1.0'
> Sep 21 18:44:09 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/devices/pci0000:00/0000:00:1d.1/usb3/3-2/3-2.2/3-2.2:1.0/ttyUSB0'
> Sep 21 18:44:09 localhost 00-wait_for_sysfs.hotplug: result: waiting for sysfs successful '/class/tty/ttyUSB0'
> Sep 21 18:44:09 localhost udev: creating device node '/udev/ttyUSB0'
New version with more devices excluded from /device-link saerch and
a better maching for device names.
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Here's a patch updating udev's copy of scsi_id to version 0.6.
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Based on a patch from Kay Sievers <kay.sievers@vrfy.org>
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Let's try it another way:
We define BLKGETSIZE64 in udev-volume_id.c now, cause including <fs.h>
does also not work with klibc. This hopefully fixes your compile problem
too.
Also included is an update to udev_volume_id with the latest fixes for
volume_id. It adds a simple logging file to map the debug function, that
we can use exactly the same files in HAL and udev.
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