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Not needed now that it's in extras.
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bah, this took me forever to figure out why I couldn't build with klibc on
on box...
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On Mon, Mar 15, 2004 at 09:28:17PM +0100, Kay Sievers wrote:
> Here is a first simple and pretty stupid try to make a simple tool for
> composing of a udev rule.
>
> It reads the udevdb to get all currently handled devices and presents a
> list, where you can choose the device to compose the rule for.
>
> The composed rule is just printed out in a window, nothing else by now.
>
> Do we want something like this?
> Nevermind, I always wanted to know, how this newt thing works :)
Here is the next step, I still can't sleep and there are to many patches
pending to make something useful :)
Cause nobody wanted to play with me, I've made a screenshot.
The device list is sorted in alphabetical order now and if there are only
a few recently discovered devices, they are placed on top of the list.
For those who want to have a look:
http://vrfy.org/projects/udev/udevruler.png
The patch applies on top of today's mmap() patch. The db format is
changed to have the file and line number of the applied rule. So it
should be easy to edit the matching rule with this beast. It compiles
with "make all udevruler".
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Here we replace the various fgets() with a mmap() call for the config
file reading, due to the reported performance problems with klibc.
Thanks to Patrick's testing, it makes a very small, close to nothing
speed gain for libc users, but a 6 times speed increase for klibc users
with a 1000 line config file.
I've created a udev_lib.[hc] for this and also moved all the generic
stuff from udev.h in there and uninlined the functions.
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Here are the missing pieces for udevtest. A simple man page is added,
the blacklist is removed, cause it can't work without having a subsystem.
The Makefile removes all manpages now with a uninstall and installs
udevtest in /usr/bin/.
Any old version from /sbin/ should be deleted by hand.
The only expected argument is the sysfs devpath, here I changed it to be
more tolerant to the input. The path may now be specified with or
without a leading slash and optionally with the /sys moutpoint prepended.
I hope this will end the confusion about the use of this program :)
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klibc has a target make spotless, this patch makes it possible to clean
the whole udev tree and start from scratch.
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current klibc uses regparm on i386. This leads to nice segfaults in all
udev apps. Using the content of the just included MCONFIG file fixes it.
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Here we rename the former tiny $(HELPER) to $(INFO)
cause it's no longer only a helper :)
And install it in /usr/bin instead of /sbin cause any user
may want to call it and we don't need it on startup.
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grrr...robert...
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On Mon, 2004-03-01 at 20:08, Robert Love wrote:
> Ack, I did not even see that! Thanks.
>
> Let's rip that out, and always use the new built-in logic to determine
> what initscript to install.
Hm, looks like we do not need the %{lsb} and USE_LSB logic at all,
anymore.
Here is the patch, updated, removing both completely.
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<harald@redhat.com>
This can be used instead of the start_udev script for systems
that do not have a shell, or some other problem...
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We want to kill udevd after installing a new version, cause the event
contains a magic with the version number of udev.
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Based on a patch from Daniel J Walsh <dwalsh@redhat.com>
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Should get rid of some more error reports of libsysfs header issues.
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Here is the missing man page for udevd/udevsend.
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Also fix up some other dependancy issues in the Makefile.
Thanks to Olaf Hering <olh@suse.de> for pointing them out.
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On Mon, Feb 09, 2004 at 05:41:15AM +0100, Kay Sievers wrote:
> It seems that today was just another udev-sunday for me :)
>
> Here is a working patch to compile udevd with klibc.
>
> It's sweet the static binary takes 6 kbytes and it runs
> with only 80 kbytes virtual memory.
>
> I changed a few peaces and added a siginterrupt.c file to klibc.
> We may check with hpa to get the changes upstream?
So here is the next try :)
hpa, for good reason, didn't like my changes to klibc.
He will dump signal() completely from klibc instead, so here we switch to
sigaction() and keep udevd working with klibc.
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Once again, patch to make logging a config option.
Reason for this (since you asked for it):
- In our setup it is easy (although still annoying) .. just edit the
ebuild, add logging support (or remove it) and rebuild. For say a
binary distro, having the logging is useful for debugging some
times, but its more a once of, or rare thing, as you do not add or
change config files every day. Sure, we can have logging by
default, but many do not want ~300 lines of extra debugging in their
logs is not pleasant, and they will complain. Rebuilding the
package for that binary package (given the users it is targeted to)
is usually not within most users grasp.
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On Fri, Feb 06, 2004 at 01:08:24AM -0500, Chris Friesen wrote:
>
> Kay, you said "unless we can get rid of _all_ the threads or at least
> getting faster, I don't want to change it."
>
> Well how about we get rid of all the threads, *and* we get faster?
Yes, we are twice as fast now on my box :)
> This patch applies to current bk trees, and does the following:
>
> 1) Switch to DGRAM sockets rather than STREAM. This simplifies things
> as mentioned in the previous message.
>
> 2) Invalid sequence numbers are mapped to -1 rather than zero, since
> zero is a valid sequence number (I think). Also, this allows for real
> speed tests using scripts starting at a zero sequence number, since that
> is what the initial expected sequence number is.
>
> 3) Get rid of all threading. This is the biggie. Some highlights:
> a) timeout using setitimer() and SIGALRM
> b) async child death notification via SIGCHLD
> c) these two signal handlers do nothing but raise volatile flags,
> all the
> work is done in the main loop
> d) locking no longer required
I cleaned up the rest of the comments, the whitespace and a few names to match
the whole thing. Please recheck it. Test script is switched to work on subsystem
'test' to let udev ignore it.
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As Chris Friesen <chris_friesen@sympatico.ca> suggested, here we switch
the unix domains socket path to abstract namespace and get rid of the
socket file in the filesystem.
Hey, this was new to me today. So here a few words:
Linux supports a abstract namespace for sockets. We don't need a
physical file on the filesystem but only a unique string magically
starting with the '\0' character.
strace with real file:
connect(3, {sa_family=AF_UNIX, path="/udev/.udevd.sock"}, 110)
strace with abstract namespace:
connect(3, {sa_family=AF_UNIX, path=@udevd}, 110)
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