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Small patch to fix the evaluation logic for the return value of getenv()
in udev_config.c file. Basically, the actual values for the environment
variables "UDEV_NO_SLEEP" and "UDEV_NO_DEVD" were not being checked.
For example UDEV_NO_SLEEP could have been set to false but the line:
if (getenv("UDEV_NO_SLEEP") != NULL)
in this case would always evaluate to true, since getenv() returns
char*, thus the "udev_sleep" variable would be set incorrectly. The
patch makes sure to check the value returned by getenv() not just if
getenv() returned a value. Hope this made sense. Thanks,
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On Tue, May 11, 2004 at 04:54:44PM -0700, Greg KH wrote:
> On Tue, May 11, 2004 at 01:16:41PM +0200, Kay Sievers wrote:
> > Hi,
> > the execution of udev depends on the proper fuction of udevd, the
> > serializing daemon. If we can't connect to udevd within a 20 second we
> > give up and the request to create a node is lost. Hope this never happens,
> > but a broken udevd may prevent udev from working.
> >
> > What do you think? Should we call the udev binary directly from udevsend
> > instead of discarding the event? This way we would create the node, regardless
> > of the state of udevd. It would be 20 seconds later and maybe not in the right
> > sequence order - but the node will propably be there.
> >
> > Does it sound sane? What do you think?
>
> That sounds like a good "failsafe" thing to do.
Here we go:
Add a fallback udev call to udevsend. If udevsend is unable to send the
event to udevd, we call the udev binary instead of doing nothing and exiting.
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to do it...
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HAL has a real solution now.
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Here is a update to extras/volume_id/*
o The device is now specified by the DEVPATH in the environment,
it's no longer needed to pass the major/minor to the callout.
o leading spaces and slashes are now removed from the returned string
and spaces are replaced by underscore, to not to confuse udev.
o Arnd Bergmann <arnd@arndb.de> provided the code to recognize s390
dasd disk labels. The -d switch tries to read the main block device
instead of the partition.
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From Lucas de Souza Santos <lucasdss@yahoo.com.br>
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On Fri, Apr 30, 2004 at 03:29:54PM -0700, Greg KH wrote:
> On Thu, Apr 29, 2004 at 11:04:46PM +0200, Kay Sievers wrote:
> > Hi,
> > here is a small udev toy, which enables udev to name partitions by
> > its filesystem label or uuid's.
> >
> > The following udev rule:
> >
> > KERNEL="sd*", PROGRAM="/sbin/udev_volume_id -M%M -m%m -u", SYMLINK="%c"
> >
> > creates a symlink with the uuid read from the filesystem. If no label or
> > uuid is found the program exits with nonzero and the rule will fail.
> >
> > ext2, ext3, reiserfs, xfs, jfs, vfat, msdos volume labels are supported,
> > ntfs and swap partitions can be recognized.
> >
> > It's possible to compile with klibc and the static binary takes 13kb.
>
> Very nice, I was wondering who was going to use that library to make
> such a tool. This is even better as we can use klibc for it.
Here is a update, which supports iso9660 and udf labels.
Not very useful in the udev case, but I've added it for hal,
so we just catch up with the latest version.
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here is a small udev toy, which enables udev to name partitions by
its filesystem label or uuid's.
The following udev rule:
KERNEL="sd*", PROGRAM="/sbin/udev_volume_id -M%M -m%m -u", SYMLINK="%c"
creates a symlink with the uuid read from the filesystem. If no label or
uuid is found the program exits with nonzero and the rule will fail.
ext2, ext3, reiserfs, xfs, jfs, vfat, msdos volume labels are supported,
ntfs and swap partitions can be recognized.
It's possible to compile with klibc and the static binary takes 13kb.
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Based on a munged patch from Olaf Hering <olh@suse.de>
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Here we catch up, after the default config changes.
o the man page is updated to reflect the new default config
o /etc/udev/rules.d/ + permissions.d/ dirs are created now
o udev.rules is installed in /etc/udev/rules.d/50-udev.rules
so the user can easily order the files by prepending a number.
(RedHat has the same name in the last rpm.)
o defined directory names in the Makefile are all without slashes now,
not the first half with and the remaining without.
o all binaries are uninstalled now
o leading slashes in config values are now removed or prepended while the
config is parsed, so we are more robust if the usere changes something.
o replaced the macros from udev_config.c with real code, cause we can
skip if the value matches and not useless iterate over the remaining
fields.
o config parsing errors are logged with info() now, fixes the bug where
we report a error with debug_parse(), even when there isn't one
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name, instead of just the whole name.
This lets /etc/dev.d/sound/ work better.
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Sorry for the late email regarding the gcov code coverage information
for udev. For those of you who have not yet noticed, udev can now be
compiled with gcov support and provide code coverage analysis. All
pertinent scripts and information can be found in the udev tree. Please
refer to "README-gcov_for_udev" for detailed information on compiling
gcov into udev and obtaining code coverage analysis. I've enclosed a
patch that updates the README-gcov_for_udev. Also, "udev-test.pl" in
udev/test/ was expanded to test symlinks, permissions, and some lack of
node creation a little more thoroughly. All comments and feedback would
be greatly welcomed. Also, any extra testing would be appreciated.
Thanks,
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On Sat, Apr 17, 2004 at 03:30:29AM +0200, Kay Sievers wrote:
> On Sat, Apr 17, 2004 at 02:04:55AM +0200, Kay Sievers wrote:
> > On Fri, Apr 16, 2004 at 04:04:42PM -0700, Greg KH wrote:
> > > Oh, and if you run the latest udev_test.pl, we have a bunch more tests,
> > > including a few that fail, if you were looking for something to do :)
> >
> > Will do it. We need to change apply_format(). I tries to expand the '%%'
> > with the next iteration over the string and removes the '%'.
The tests are all successful now.
If this patch breaks something else, we simply have too few tests :)
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permission files.
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/etc/dev.d/default/ usage
Thanks to Red Hat for them.
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<ogasawara@osdl.org>
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Here is the fix for extras/seliux/*
o install the binary in /sbin/
o add symlink to /etc/dev.d/ with suffix .dev
o removed the undefined udev_log variable
o fixed compiler warnings
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Here's an update for the writing udev rules document.
- Minor corrections/clarifications
- Added info about using NAME{all_partitions}
- Added more info about udevinfo, simplifying the rule-writing process
You can ignore the diff I sent you yesterday - according to the 20040415 bk
snapshot on codemonkey.org, you haven't applied it yet. This patch
incorporates that update, and some other changes I just made.
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Thanks to Yin, Hu <hu.yin@intel.com>, who made a nice perl script to test the
expected behavior of the udevd sequence number handling. The test sends
different SEQNUM sequences to udevd, while analyzing the reordering and timeout
handling of udevd.
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language.
Many thanks to jack_mort <mort_jack@yahoo.fr> for helping track this down.
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<ogasawara@osdl.org>
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<dan@reactivated.net>
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On Sun, Apr 11, 2004 at 03:51:07AM +0200, Kay Sievers wrote:
> Here we change extras/dbus/* to
> o install the binary in /etc/dev.d
> o append .dev to the binary
> o add David's copyright
> o add the listener script to watch the sent dbus messages
> o removed the undefined udev_log variable
> o switch printf() to dbg()
Here we install the binary in /usr/sbin/ and symlink it to
/etc/dev.d/ with the .dev suffix.
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Thanks to Dan Weber <dan@mirrorlynx.com> for the info.
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Thanks to Marcel Holtmann <marcel@holtmann.org> for the information.
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Originally by Marco d'Itri <md@Linux.IT>
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Fix the devpath string for unhandled netdev's.
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It seems that the transition from DEVNODE to DEVNAME wasn't done
everywhere. This broke udev_dbus for me.
Attached patch does the transition in the places it wasn't done yet.
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Based on a patch from Olaf Hering we remove the node now only if the
requested dev_t is different from the already existing node, so any
run of udevstart should preserve the inode number of the node file.
syslog while the right node is already there:
creating device node '/udev/hda'
make_node: preserve file '/udev/hda', cause it has correct dev_t
make_node: chmod(/udev/hda, 060600)
syslog for wrong file already there:
creating device node '/udev/hda'
make_node: already present file '/udev/hda' unlinked
make_node: chmod(/udev/hda, 060600)
syslog for directory with same name already there:
creating device node '/udev/hda'
make_node: unlink(/udev/hda) failed with error '21'
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Here we switch the msg_dump() to #define instead of commenting it out.
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Here we get the netdev handling for udevruler, after all information
is available now in the udev database. It also fixes the way libsysfs is
used.
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Small cleanup of the wording in the udev. man page.
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Small change, to put the config informations for handled network
interfaces into the database.
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I have a very slow Bluetooth adapter hotplug event call, so we need
to increase the event timeout to something larger than 6 seconds.
Apr 1 02:54:08 pim udevsend[12119]: main: DEVPATH = '/class/tty/ttyUB0'
Apr 1 02:54:08 pim udevsend[12119]: main: SEQNUM = '340'
Apr 1 02:54:08 pim udevsend[12120]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1'
Apr 1 02:54:08 pim udevsend[12120]: main: SEQNUM = '344'
Apr 1 02:54:09 pim udevsend[12133]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.1'
Apr 1 02:54:09 pim udevsend[12133]: main: SEQNUM = '342'
Apr 1 02:54:10 pim udevsend[12136]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.2'
Apr 1 02:54:10 pim udevsend[12136]: main: SEQNUM = '343'
Apr 1 02:54:13 pim udevsend[12141]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0'
Apr 1 02:54:13 pim udevsend[12141]: main: SEQNUM = '341'
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Sorry, udevstart needs a small cleanup after my recent copy/pastes.
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the install.
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