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# Makefile for udev
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#
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# Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
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#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
[PATCH] add udev logging to info log
On Thu, Jan 15, 2004 at 05:14:16AM +0100, Kay Sievers wrote:
> On Wed, Jan 14, 2004 at 01:10:43PM -0800, Greg KH wrote:
> > On Wed, Jan 14, 2004 at 02:34:26PM -0600, Clay Haapala wrote:
> > > On Wed, 14 Jan 2004, Chris Friesen spake thusly:
> > > >
> > > > Maybe for ones with a matching rule, you could print something like:
> > > >
> > > >
> > > Is the act of printing/syslogging a rule in an of itself?
> >
> > No, as currently the only way stuff ends up in the syslog is if
> > DEBUG=true is used on the build line.
> >
> > But it's sounding like we might want to change that... :)
>
> How about this in the syslog after connect/disconnect?
>
> Jan 15 05:07:45 pim udev[28007]: configured rule in '/etc/udev/udev.rules' at line 17 applied, 'video*' becomes 'video/webcam%n'
> Jan 15 05:07:45 pim udev[28007]: creating device node '/udev/video/webcam0'
> Jan 15 05:07:47 pim udev[28015]: removing device node '/udev/video/webcam0'
Here is a slightly better version. I've created a logging.h file and
moved the debug macros from udev.h in there.
If you type:
'make' - you will get a binary that prints one or two lines to syslog
if a device node is created or deleted
'make LOG=false' - you get a binary that prints asolutely nothing
'make DEBUG=true' - the same as today, it will print all debug lines
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# Set the following to control the use of syslog
# Set it to `false' to remove all logging
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USE_LOG = true
[PATCH] add udev logging to info log
On Thu, Jan 15, 2004 at 05:14:16AM +0100, Kay Sievers wrote:
> On Wed, Jan 14, 2004 at 01:10:43PM -0800, Greg KH wrote:
> > On Wed, Jan 14, 2004 at 02:34:26PM -0600, Clay Haapala wrote:
> > > On Wed, 14 Jan 2004, Chris Friesen spake thusly:
> > > >
> > > > Maybe for ones with a matching rule, you could print something like:
> > > >
> > > >
> > > Is the act of printing/syslogging a rule in an of itself?
> >
> > No, as currently the only way stuff ends up in the syslog is if
> > DEBUG=true is used on the build line.
> >
> > But it's sounding like we might want to change that... :)
>
> How about this in the syslog after connect/disconnect?
>
> Jan 15 05:07:45 pim udev[28007]: configured rule in '/etc/udev/udev.rules' at line 17 applied, 'video*' becomes 'video/webcam%n'
> Jan 15 05:07:45 pim udev[28007]: creating device node '/udev/video/webcam0'
> Jan 15 05:07:47 pim udev[28015]: removing device node '/udev/video/webcam0'
Here is a slightly better version. I've created a logging.h file and
moved the debug macros from udev.h in there.
If you type:
'make' - you will get a binary that prints one or two lines to syslog
if a device node is created or deleted
'make LOG=false' - you get a binary that prints asolutely nothing
'make DEBUG=true' - the same as today, it will print all debug lines
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# Set the following to `true' to log the debug
# and make a unstripped, unoptimized binary.
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# Leave this set to `false' for production use.
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DEBUG = false
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# Set this to compile with Security-Enhanced Linux support.
USE_SELINUX = false
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ROOT = udev
[PATCH] spilt udev into pieces
On Thu, Jan 22, 2004 at 01:27:45AM +0100, Kay Sievers wrote:
> On Wed, Jan 21, 2004 at 02:38:25PM +0100, Kay Sievers wrote:
> > On Thu, Jan 15, 2004 at 01:45:10PM -0800, Greg KH wrote:
> > > On Thu, Jan 15, 2004 at 10:36:25PM +0800, Ling, Xiaofeng wrote:
> > > > Hi, Greg
> > > > I wrote a simple implementation for the two pieces
> > > > of send and receive hotplug event,
> > > > use a message queue and a list for the out of order
> > > > hotplug event. It also has a timeout timer of 3 seconds.
> > > > They are now separate program. the file nseq is the test script.
> > > > Could you have a look to see wether it is feasible?
> > > > If so, I'll continue to merge with udev.
> > >
> > > Yes, very nice start. Please continue on.
> > >
> > > One minor comment, please stick with the kernel coding style when you
> > > are writing new code for udev.
> >
> > I took the code from Xiaofeng, cleaned the whitespace, renamed some bits,
> > tweaked the debugging, added the udev exec and created a patch for the current tree.
> >
> > It seems functional now, by simply executing our current udev (dirty hack).
> > It reorders the incoming events and if one is missing it delays the
> > execution of the following ones up to a maximum of 10 seconds.
> >
> > Test script is included, but you can't mix hotplug sequence numbers and
> > test script numbers, it will result in waiting for the missing numbers :)
>
> Hey, nobody want's to play with me?
> So here I'm chatting with myself :)
>
> This is the next version with signal handling for resetting the expected
> signal number. I changed the behaviour of the timeout to skip all
> missing events at once and to proceed with the next event in the queue.
>
> So it's now possible to use the test script at any time, cause it resets
> the daemon, if real hotplug event coming in later all missing nimbers will
> be skipped after a timeout of 10 seconds and the queued events are applied.
Here is the next updated updated version to apply to the lastet udev.
I've added infrastructure for getting the state of the IPC queue in the
sender and set the program to exec by the daemon. Also the magic key id
is replaced by the usual key generation by path/nr.
It looks promising, I use it on my machine and my 4in1 USB-flash-reader
connect/disconnect emits the events "randomly" but udevd is able to
reorder it and calls our normal udev in the right order.
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DAEMON = udevd
SENDER = udevsend
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INFO = udevinfo
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TESTER = udevtest
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STARTER = udevstart
[PATCH] finally solve the bad sysfs-timing for all of us
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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WAIT = wait_for_sysfs
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VERSION = 045
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INSTALL_DIR = /usr/local/bin
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RELEASE_NAME = $( ROOT) -$( VERSION)
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LOCAL_CFG_DIR = etc/udev
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HOTPLUG_EXEC = $( ROOT)
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DESTDIR =
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KERNEL_DIR = /lib/modules/${ shell uname -r } /build
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# override this to make udev look in a different location for it's config files
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prefix =
exec_prefix = ${ prefix }
etcdir = ${ prefix } /etc
sbindir = ${ exec_prefix } /sbin
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usrbindir = ${ exec_prefix } /usr/bin
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mandir = ${ prefix } /usr/share/man
hotplugdir = ${ etcdir } /hotplug.d/default
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configdir = ${ etcdir } /udev
initdir = ${ etcdir } /init.d
dev_ddir = ${ etcdir } /dev.d
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srcdir = .
INSTALL = /usr/bin/install -c
INSTALL_PROGRAM = ${ INSTALL }
INSTALL_DATA = ${ INSTALL } -m 644
INSTALL_SCRIPT = ${ INSTALL_PROGRAM }
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# To build any of the extras programs, run with:
# make EXTRAS="extras/a extras/b"
EXTRAS =
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# place to put our device nodes
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udevdir = ${ prefix } /udev
udevdb = ${ udevdir } /.udevdb
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# Comment out this line to build with something other
# than the local version of klibc
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#USE_KLIBC = true
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# make the build silent (well, at least the udev part) Set this
# to something else to make it noisy again.
V = false
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# set up PWD so that older versions of make will work with our build.
PWD = $( shell pwd )
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# If you are running a cross compiler, you may want to set this
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# to something more interesting, like "arm-linux-". If you want
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# to compile vs uClibc, that can be done here as well.
CROSS = #/usr/i386-linux-uclibc/usr/bin/i386-uclibc-
CC = $( CROSS) gcc
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LD = $( CROSS) gcc
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AR = $( CROSS) ar
STRIP = $( CROSS) strip
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RANLIB = $( CROSS) ranlib
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HOSTCC = gcc
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export CROSS CC AR STRIP RANLIB CFLAGS LDFLAGS LIB_OBJS ARCH_LIB_OBJS CRT0
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# code taken from uClibc to determine the current arch
ARCH := ${ shell $( CC) -dumpmachine | sed -e s '/-.*//' -e 's/i.86/i386/' -e 's/sparc.*/sparc/' \
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-e 's/arm.*/arm/g' -e 's/m68k.*/m68k/' -e 's/powerpc/ppc/g' }
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# code taken from uClibc to determine the gcc include dir
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GCCINCDIR := ${ shell LC_ALL=C $( CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp" }
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# code taken from uClibc to determine the libgcc.a filename
GCC_LIB := $( shell $( CC) -print-libgcc-file-name )
# use '-Os' optimization if available, else use -O2
OPTIMIZATION := ${ shell if $( CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
then echo "-Os" ; else echo "-O2" ; fi }
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# add -Wredundant-decls when libsysfs gets cleaned up
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WARNINGS := -Wall
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CFLAGS := -pipe
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i f e q ( $( strip $ ( USE_LOG ) ) , t r u e )
[PATCH] add udev logging to info log
On Thu, Jan 15, 2004 at 05:14:16AM +0100, Kay Sievers wrote:
> On Wed, Jan 14, 2004 at 01:10:43PM -0800, Greg KH wrote:
> > On Wed, Jan 14, 2004 at 02:34:26PM -0600, Clay Haapala wrote:
> > > On Wed, 14 Jan 2004, Chris Friesen spake thusly:
> > > >
> > > > Maybe for ones with a matching rule, you could print something like:
> > > >
> > > >
> > > Is the act of printing/syslogging a rule in an of itself?
> >
> > No, as currently the only way stuff ends up in the syslog is if
> > DEBUG=true is used on the build line.
> >
> > But it's sounding like we might want to change that... :)
>
> How about this in the syslog after connect/disconnect?
>
> Jan 15 05:07:45 pim udev[28007]: configured rule in '/etc/udev/udev.rules' at line 17 applied, 'video*' becomes 'video/webcam%n'
> Jan 15 05:07:45 pim udev[28007]: creating device node '/udev/video/webcam0'
> Jan 15 05:07:47 pim udev[28015]: removing device node '/udev/video/webcam0'
Here is a slightly better version. I've created a logging.h file and
moved the debug macros from udev.h in there.
If you type:
'make' - you will get a binary that prints one or two lines to syslog
if a device node is created or deleted
'make LOG=false' - you get a binary that prints asolutely nothing
'make DEBUG=true' - the same as today, it will print all debug lines
2004-01-16 08:53:20 +03:00
CFLAGS += -DLOG
e n d i f
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# if DEBUG is enabled, then we do not strip or optimize
i f e q ( $( strip $ ( DEBUG ) ) , t r u e )
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CFLAGS += -O1 -g -DDEBUG -D_GNU_SOURCE
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LDFLAGS += -Wl,-warn-common
STRIPCMD = /bin/true -Since_we_are_debugging
e l s e
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CFLAGS += $( OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
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LDFLAGS += -s -Wl,-warn-common
STRIPCMD = $( STRIP) -s --remove-section= .note --remove-section= .comment
e n d i f
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# If we are using our version of klibc, then we need to build, link it, and then
# link udev against it statically.
# Otherwise, use glibc and link dynamically.
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i f e q ( $( strip $ ( USE_KLIBC ) ) , t r u e )
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KLIBC_FIXUPS_DIR = $( PWD) /klibc_fixups
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KLIBC_BASE = $( PWD) /klibc
KLIBC_DIR = $( KLIBC_BASE) /klibc
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INCLUDE_DIR := $( KLIBC_BASE) /include
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LINUX_INCLUDE_DIR := $( KERNEL_DIR) /include
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include $( KLIBC_DIR) /arch/$( ARCH) /MCONFIG
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# arch specific objects
ARCH_LIB_OBJS = \
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$( KLIBC_DIR) /libc.a
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CRT0 = $( KLIBC_DIR) /crt0.o
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LIBC = $( ARCH_LIB_OBJS) $( LIB_OBJS) $( CRT0)
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CFLAGS += $( WARNINGS) -nostdinc \
$( OPTFLAGS) \
-D__KLIBC__ -fno-builtin-printf \
-I$( KLIBC_FIXUPS_DIR) \
-include $( KLIBC_FIXUPS_DIR) /klibc_fixups.h \
-I$( INCLUDE_DIR) \
-I$( INCLUDE_DIR) /arch/$( ARCH) \
-I$( INCLUDE_DIR) /bits$( BITSIZE) \
-I$( GCCINCDIR) \
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-I$( LINUX_INCLUDE_DIR)
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LIB_OBJS =
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LDFLAGS = --static --nostdlib -nostartfiles -nodefaultlibs
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e l s e
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WARNINGS += -Wshadow -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
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CRT0 =
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LIBC =
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CFLAGS += $( WARNINGS) -I$( GCCINCDIR)
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LIB_OBJS = -lc
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LDFLAGS =
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e n d i f
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i f e q ( $( strip $ ( USE_SELINUX ) ) , t r u e )
CFLAGS += -DUSE_SELINUX
LIB_OBJS += -lselinux
e n d i f
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CFLAGS += -I$( PWD) /libsysfs/sysfs \
-I$( PWD) /libsysfs
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# config files automatically generated
GEN_CONFIGS = $( LOCAL_CFG_DIR) /udev.conf
all : $( ROOT ) $( SENDER ) $( DAEMON ) $( INFO ) $( TESTER ) $( WAIT ) $( GEN_CONFIGS )
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@extras= " $( EXTRAS) " ; for target in $$ extras ; do \
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echo $$ target ; \
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$( MAKE) prefix = $( prefix) \
LD = " $( LD) " \
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SYSFS = " $( SYSFS) " \
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KERNEL_DIR = " $( KERNEL_DIR) " \
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QUIET = " @ $( PWD) /ccdv " \
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-C $$ target $@ ; \
done ; \
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$(ARCH_LIB_OBJS) : $( CRT 0)
$(CRT0) :
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@if [ ! -r klibc/linux ] ; then \
ln -f -s $( KERNEL_DIR) klibc/linux; \
fi
$( MAKE) -C klibc SUBDIRS = klibc
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SYSFS = $( PWD) /libsysfs/sysfs_bus.o \
$( PWD) /libsysfs/sysfs_class.o \
$( PWD) /libsysfs/sysfs_device.o \
$( PWD) /libsysfs/sysfs_dir.o \
$( PWD) /libsysfs/sysfs_driver.o \
$( PWD) /libsysfs/sysfs_utils.o \
$( PWD) /libsysfs/dlist.o
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OBJS = udev_lib.o \
udev_config.o \
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udev_add.o \
udev_remove.o \
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udev_sysfs.o \
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udev_db.o \
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namedev.o \
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namedev_parse.o \
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dev_d.o \
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$( SYSFS)
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HEADERS = udev.h \
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udev_lib.h \
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namedev.h \
udev_version.h \
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udev_db.h \
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udev_sysfs.h \
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logging.h \
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selinux.h \
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list.h
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i f e q ( $( strip $ ( USE_KLIBC ) ) , t r u e )
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HEADERS += klibc_fixups/klibc_fixups.h \
klibc_fixups/mntent.h \
klibc_fixups/pwd.h
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OBJS += klibc_fixups/klibc_fixups.o
KLIBC_FIXUP = klibc_fixups/klibc_fixups.o
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e n d i f
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i f e q ( $( strip $ ( V ) ) , f a l s e )
QUIET = @./ccdv
HOST_PROGS = ccdv
e l s e
QUIET =
HOST_PROGS =
e n d i f
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# header files automatically generated
GEN_HEADERS = udev_version.h
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ccdv :
@echo "Building ccdv"
@$( HOSTCC) -O1 ccdv.c -o ccdv
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# Rules on how to create the generated header files
udev_version.h :
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@echo "Creating udev_version.h"
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@echo \# define UDEV_VERSION \" $( VERSION) \" > $@
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@echo \# define UDEV_ROOT \" $( udevdir) \" >> $@
@echo \# define UDEV_DB \" $( udevdb) \" >> $@
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@echo \# define UDEV_CONFIG_DIR \" $( configdir) \" >> $@
@echo \# define UDEV_CONFIG_FILE \" $( configdir) /udev.conf\" >> $@
@echo \# define UDEV_RULES_FILE \" $( configdir) /rules.d\" >> $@
@echo \# define UDEV_PERMISSION_FILE \" $( configdir) /permissions.d\" >> $@
@echo \# define UDEV_LOG_DEFAULT \" yes\" >> $@
@echo \# define UDEV_BIN \" $( DESTDIR) $( sbindir) /udev\" >> $@
@echo \# define UDEVD_BIN \" $( DESTDIR) $( sbindir) /udevd\" >> $@
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# Rules on how to create the generated config files
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$(LOCAL_CFG_DIR)/udev.conf :
sed -e " s:@udevdir@: $( udevdir) : " -e " s:@configdir@: $( configdir) : " < $( LOCAL_CFG_DIR) /udev.conf.in > $@
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GEN_MANPAGES = udev.8
GEN_MANPAGESIN = udev.8.in
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# Rules on how to create the man pages
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$(GEN_MANPAGES) : $( GEN_MANPAGESIN )
sed -e " s:@udevdir@: $( udevdir) : " < $@ .in > $@
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$(OBJS) : $( GEN_HEADERS ) $( HOST_PROGS )
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$(ROOT).o : $( GEN_HEADERS ) $( HOST_PROGS )
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$(TESTER).o : $( GEN_HEADERS ) $( HOST_PROGS )
$(INFO).o : $( GEN_HEADERS ) $( HOST_PROGS )
$(DAEMON).o : $( GEN_HEADERS ) $( HOST_PROGS )
$(SENDER).o : $( GEN_HEADERS ) $( HOST_PROGS )
$(STARTER).o : $( GEN_HEADERS ) $( HOST_PROGS )
$(WAIT).o : $( GEN_HEADERS ) $( HOST_PROGS )
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$(ROOT) : $( LIBC ) $( ROOT ) .o udev_start .o $( OBJS ) $( HEADERS ) $( GEN_MANPAGES )
$( QUIET) $( LD) $( LDFLAGS) -o $@ $( CRT0) udev.o udev_start.o $( OBJS) $( LIB_OBJS) $( ARCH_LIB_OBJS)
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$( QUIET) $( STRIPCMD) $@
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$(TESTER) : $( LIBC ) $( TESTER ) .o $( OBJS ) $( HEADERS )
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$( QUIET) $( LD) $( LDFLAGS) -o $@ $( CRT0) udevtest.o $( OBJS) $( LIB_OBJS) $( ARCH_LIB_OBJS)
$( QUIET) $( STRIPCMD) $@
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$(INFO) : $( LIBC ) $( INFO ) .o $( OBJS ) $( HEADERS )
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$( QUIET) $( LD) $( LDFLAGS) -o $@ $( CRT0) udevinfo.o udev_lib.o udev_config.o udev_db.o $( SYSFS) $( LIB_OBJS) $( ARCH_LIB_OBJS)
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$( QUIET) $( STRIPCMD) $@
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$(DAEMON) : $( LIBC ) $( DAEMON ) .o $( OBJS ) udevd .h
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$( QUIET) $( LD) $( LDFLAGS) -o $@ $( CRT0) udevd.o udev_lib.o $( KLIBC_FIXUP) $( LIB_OBJS) $( ARCH_LIB_OBJS)
$( QUIET) $( STRIPCMD) $@
[PATCH] spilt udev into pieces
On Thu, Jan 22, 2004 at 01:27:45AM +0100, Kay Sievers wrote:
> On Wed, Jan 21, 2004 at 02:38:25PM +0100, Kay Sievers wrote:
> > On Thu, Jan 15, 2004 at 01:45:10PM -0800, Greg KH wrote:
> > > On Thu, Jan 15, 2004 at 10:36:25PM +0800, Ling, Xiaofeng wrote:
> > > > Hi, Greg
> > > > I wrote a simple implementation for the two pieces
> > > > of send and receive hotplug event,
> > > > use a message queue and a list for the out of order
> > > > hotplug event. It also has a timeout timer of 3 seconds.
> > > > They are now separate program. the file nseq is the test script.
> > > > Could you have a look to see wether it is feasible?
> > > > If so, I'll continue to merge with udev.
> > >
> > > Yes, very nice start. Please continue on.
> > >
> > > One minor comment, please stick with the kernel coding style when you
> > > are writing new code for udev.
> >
> > I took the code from Xiaofeng, cleaned the whitespace, renamed some bits,
> > tweaked the debugging, added the udev exec and created a patch for the current tree.
> >
> > It seems functional now, by simply executing our current udev (dirty hack).
> > It reorders the incoming events and if one is missing it delays the
> > execution of the following ones up to a maximum of 10 seconds.
> >
> > Test script is included, but you can't mix hotplug sequence numbers and
> > test script numbers, it will result in waiting for the missing numbers :)
>
> Hey, nobody want's to play with me?
> So here I'm chatting with myself :)
>
> This is the next version with signal handling for resetting the expected
> signal number. I changed the behaviour of the timeout to skip all
> missing events at once and to proceed with the next event in the queue.
>
> So it's now possible to use the test script at any time, cause it resets
> the daemon, if real hotplug event coming in later all missing nimbers will
> be skipped after a timeout of 10 seconds and the queued events are applied.
Here is the next updated updated version to apply to the lastet udev.
I've added infrastructure for getting the state of the IPC queue in the
sender and set the program to exec by the daemon. Also the magic key id
is replaced by the usual key generation by path/nr.
It looks promising, I use it on my machine and my 4in1 USB-flash-reader
connect/disconnect emits the events "randomly" but udevd is able to
reorder it and calls our normal udev in the right order.
2004-01-23 11:28:57 +03:00
2004-10-06 06:01:12 +04:00
$(SENDER) : $( LIBC ) $( SENDER ) .o $( OBJS ) udevd .h
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$( QUIET) $( LD) $( LDFLAGS) -o $@ $( CRT0) udevsend.o $( LIB_OBJS) $( ARCH_LIB_OBJS)
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$( QUIET) $( STRIPCMD) $@
[PATCH] spilt udev into pieces
On Thu, Jan 22, 2004 at 01:27:45AM +0100, Kay Sievers wrote:
> On Wed, Jan 21, 2004 at 02:38:25PM +0100, Kay Sievers wrote:
> > On Thu, Jan 15, 2004 at 01:45:10PM -0800, Greg KH wrote:
> > > On Thu, Jan 15, 2004 at 10:36:25PM +0800, Ling, Xiaofeng wrote:
> > > > Hi, Greg
> > > > I wrote a simple implementation for the two pieces
> > > > of send and receive hotplug event,
> > > > use a message queue and a list for the out of order
> > > > hotplug event. It also has a timeout timer of 3 seconds.
> > > > They are now separate program. the file nseq is the test script.
> > > > Could you have a look to see wether it is feasible?
> > > > If so, I'll continue to merge with udev.
> > >
> > > Yes, very nice start. Please continue on.
> > >
> > > One minor comment, please stick with the kernel coding style when you
> > > are writing new code for udev.
> >
> > I took the code from Xiaofeng, cleaned the whitespace, renamed some bits,
> > tweaked the debugging, added the udev exec and created a patch for the current tree.
> >
> > It seems functional now, by simply executing our current udev (dirty hack).
> > It reorders the incoming events and if one is missing it delays the
> > execution of the following ones up to a maximum of 10 seconds.
> >
> > Test script is included, but you can't mix hotplug sequence numbers and
> > test script numbers, it will result in waiting for the missing numbers :)
>
> Hey, nobody want's to play with me?
> So here I'm chatting with myself :)
>
> This is the next version with signal handling for resetting the expected
> signal number. I changed the behaviour of the timeout to skip all
> missing events at once and to proceed with the next event in the queue.
>
> So it's now possible to use the test script at any time, cause it resets
> the daemon, if real hotplug event coming in later all missing nimbers will
> be skipped after a timeout of 10 seconds and the queued events are applied.
Here is the next updated updated version to apply to the lastet udev.
I've added infrastructure for getting the state of the IPC queue in the
sender and set the program to exec by the daemon. Also the magic key id
is replaced by the usual key generation by path/nr.
It looks promising, I use it on my machine and my 4in1 USB-flash-reader
connect/disconnect emits the events "randomly" but udevd is able to
reorder it and calls our normal udev in the right order.
2004-01-23 11:28:57 +03:00
[PATCH] finally solve the bad sysfs-timing for all of us
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.
2004-10-06 08:35:39 +04:00
$(WAIT) : $( WAIT ) .o $( OBJS ) $( HEADERS ) $( LIBC )
2004-10-19 15:37:22 +04:00
$( QUIET) $( LD) $( LDFLAGS) -o $@ $( CRT0) $( WAIT) .o udev_sysfs.o udev_lib.o udev_config.o $( SYSFS) $( LIB_OBJS) $( ARCH_LIB_OBJS)
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$( QUIET) $( STRIPCMD) $@
#.c.o:
# $(CC) $(CFLAGS) $(DEFS) $(CPPFLAGS) -c -o $@ $<
.c.o :
$( QUIET) $( CC) $( CFLAGS) -c -o $@ $<
[PATCH] finally solve the bad sysfs-timing for all of us
On Tue, Sep 21, 2004 at 07:17:34PM +0200, Kay Sievers wrote:
> During the integration of HAL into the linux hotplug system, we dicover
> every week a new signaling path that fails cause of the delayed
> population of the sysfs files, which are connected by symlinks and
> appear in something like a random order in userspace.
>
> It's pretty complicated to understand the connection between all these
> files for all the different subsystems with all the exceptions, so most
> of the users simply sleep a few seconds, but that is not acceptable for
> our integration work.
>
> Here I try to get all the special knowledge about that behavior together
> and place that in a simple binary. That program _must_ run first of all
> other hotplug processsing and every later script, udev or HAL all can get
> rid of the wild guesses about the right time sysfs is ready.
>
> It will not only wait for the "dev"-file events we handle with udev, also
> for every /device-device with the corresponding bus link.
>
> It is provided as a patch against the current udev tree and a "install" will
> place the new program in the hotplug.d directory:
>
> [kay@pim ~]$ 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.
2004-10-06 08:35:39 +04:00
2005-04-27 07:59:47 +04:00
clean :
-find . \( -not -type d \) -and \( -name '*~' -o -name '*.[oas]' \) -type f -print \
| xargs rm -f
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-rm -f core $( ROOT) $( GEN_HEADERS) $( GEN_CONFIGS) $( GEN_MANPAGES) $( INFO) $( DAEMON) $( SENDER) $( TESTER) $( WAIT)
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-rm -f ccdv
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$( MAKE) -C klibc clean
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@extras= " $( EXTRAS) " ; for target in $$ extras ; do \
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echo $$ target ; \
$( MAKE) prefix = $( prefix) LD = " $( LD) " SYSFS = " $( SYSFS) " \
-C $$ target $@ ; \
done ; \
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spotless : clean
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$( MAKE) -C klibc spotless
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-rm -f klibc/linux
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DISTFILES = $( shell find . \( -not -name '.' \) -print | grep -v -e CVS -e "\.tar\.gz" -e "\/\." -e releases -e BitKeeper -e SCCS -e test/sys | sort )
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DISTDIR := $( RELEASE_NAME)
srcdir = .
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release : spotless
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-rm -rf $( DISTDIR)
mkdir $( DISTDIR)
chmod 777 $( DISTDIR)
bk export $( DISTDIR)
tar -c $( DISTDIR) | gzip -9 > $( RELEASE_NAME) .tar.gz
rm -rf $( DISTDIR)
@echo " $( RELEASE_NAME) .tar.gz created "
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small_release : $( DISTFILES ) spotless
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# @echo $(DISTFILES)
@-rm -rf $( DISTDIR)
@mkdir $( DISTDIR)
@-chmod 777 $( DISTDIR)
@for file in $( DISTFILES) ; do \
if test -d $$ file; then \
mkdir $( DISTDIR) /$$ file; \
else \
cp -p $$ file $( DISTDIR) /$$ file; \
fi ; \
done
@tar -c $( DISTDIR) | gzip -9 > $( RELEASE_NAME) .tar.gz
@rm -rf $( DISTDIR)
@echo " Built $( RELEASE_NAME) .tar.gz "
2003-10-17 08:18:40 +04:00
2004-10-14 12:42:33 +04:00
install-initscript : etc /init .d /udev etc /init .d /udev .init .LSB
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@if [ -f /etc/redhat-release ] ; then \
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$( INSTALL_DATA) -D etc/init.d/udev $( DESTDIR) $( initdir) /udev; \
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elif [ -f /etc/SuSE-release ] ; then \
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$( INSTALL_DATA) -D etc/init.d/udev.init.LSB $( DESTDIR) $( initdir) /udev; \
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fi
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install-config :
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$( INSTALL) -d $( DESTDIR) $( configdir) /rules.d
$( INSTALL) -d $( DESTDIR) $( configdir) /permissions.d
@if [ ! -r $( DESTDIR) $( configdir) /udev.conf ] ; then \
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echo $( INSTALL_DATA) $( LOCAL_CFG_DIR) /udev.conf $( DESTDIR) $( configdir) ; \
$( INSTALL_DATA) $( LOCAL_CFG_DIR) /udev.conf $( DESTDIR) $( configdir) ; \
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fi
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@if [ ! -r $( DESTDIR) $( configdir) /rules.d/50-udev.rules ] ; then \
echo $( INSTALL_DATA) $( LOCAL_CFG_DIR) /udev.rules $( DESTDIR) $( configdir) /rules.d/50-udev.rules; \
$( INSTALL_DATA) $( LOCAL_CFG_DIR) /udev.rules $( DESTDIR) $( configdir) /rules.d/50-udev.rules; \
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fi
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@if [ ! -r $( DESTDIR) $( configdir) /permissions.d/50-udev.permissions ] ; then \
echo $( INSTALL_DATA) $( LOCAL_CFG_DIR) /udev.permissions $( DESTDIR) $( configdir) /permissions.d/50-udev.permissions; \
$( INSTALL_DATA) $( LOCAL_CFG_DIR) /udev.permissions $( DESTDIR) $( configdir) /permissions.d/50-udev.permissions; \
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fi
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install-dev.d :
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$( INSTALL) -d $( DESTDIR) $( dev_ddir) /default
$( INSTALL_PROGRAM) -D etc/dev.d/net/hotplug.dev $( DESTDIR) $( dev_ddir) /net/hotplug.dev
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uninstall-dev.d :
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- rm $( dev_ddir) /net/hotplug.dev
- rmdir $( dev_ddir) /net
- rmdir $( dev_ddir) /default
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- rmdir $( dev_ddir)
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2004-04-02 12:01:58 +04:00
install-man :
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$( INSTALL_DATA) -D udev.8 $( DESTDIR) $( mandir) /man8/udev.8
$( INSTALL_DATA) -D udevinfo.8 $( DESTDIR) $( mandir) /man8/udevinfo.8
$( INSTALL_DATA) -D udevtest.8 $( DESTDIR) $( mandir) /man8/udevtest.8
$( INSTALL_DATA) -D udevstart.8 $( DESTDIR) $( mandir) /man8/udevstart.8
$( INSTALL_DATA) -D udevd.8 $( DESTDIR) $( mandir) /man8/udevd.8
- ln -f -s udevd.8 $( DESTDIR) $( mandir) /man8/udevsend.8
uninstall-man :
- rm $( mandir) /man8/udev.8
- rm $( mandir) /man8/udevinfo.8
- rm $( mandir) /man8/udevtest.8
- rm $( mandir) /man8/udevstart.8
- rm $( mandir) /man8/udevd.8
- rm $( mandir) /man8/udevsend.8
install : install -initscript install -config install -man install -dev .d all
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$( INSTALL) -d $( DESTDIR) $( udevdir)
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$( INSTALL) -d $( DESTDIR) $( hotplugdir)
$( INSTALL_PROGRAM) -D $( ROOT) $( DESTDIR) $( sbindir) /$( ROOT)
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$( INSTALL_PROGRAM) -D $( DAEMON) $( DESTDIR) $( sbindir) /$( DAEMON)
$( INSTALL_PROGRAM) -D $( SENDER) $( DESTDIR) $( sbindir) /$( SENDER)
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$( INSTALL_PROGRAM) -D $( INFO) $( DESTDIR) $( usrbindir) /$( INFO)
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$( INSTALL_PROGRAM) -D $( TESTER) $( DESTDIR) $( usrbindir) /$( TESTER)
[PATCH] finally solve the bad sysfs-timing for all of us
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.
2004-10-06 08:35:39 +04:00
$( INSTALL_PROGRAM) -D $( WAIT) $( DESTDIR) $( sbindir) /$( WAIT)
- ln -f -s $( sbindir) /udev $( DESTDIR) $( sbindir) /$( STARTER)
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- ln -f -s $( sbindir) /$( SENDER) $( DESTDIR) $( hotplugdir) /10-udev.hotplug
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- ln -f -s $( sbindir) /$( WAIT) $( DESTDIR) $( hotplugdir) /05-wait_for_sysfs.hotplug
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i f n d e f D E S T D I R
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- killall $( DAEMON)
- rm -rf $( udevdb)
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e n d i f
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@extras= " $( EXTRAS) " ; for target in $$ extras ; do \
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echo $$ target ; \
$( MAKE) prefix = $( prefix) LD = " $( LD) " SYSFS = " $( SYSFS) " \
-C $$ target $@ ; \
done ; \
2003-10-17 11:19:04 +04:00
2004-04-02 11:47:23 +04:00
uninstall : uninstall -man uninstall -dev .d
2004-09-05 20:05:32 +04:00
- rm $( hotplugdir) /10-udev.hotplug
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- rm $( hotplugdir) /05-wait_for_sysfs.hotplug
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- rm $( configdir) /rules.d/50-udev.rules
- rm $( configdir) /permissions.d/50-udev.permissions
2003-12-03 12:08:46 +03:00
- rm $( configdir) /udev.conf
2004-04-24 08:50:27 +04:00
- rmdir $( configdir) /rules.d
- rmdir $( configdir) /permissions.d
- rmdir $( configdir)
2003-12-17 10:30:15 +03:00
- rm $( initdir) /udev
2003-10-17 11:19:04 +04:00
- rm $( sbindir) /$( ROOT)
2004-02-02 19:00:07 +03:00
- rm $( sbindir) /$( DAEMON)
- rm $( sbindir) /$( SENDER)
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- rm $( sbindir) /$( STARTER)
2004-03-03 10:49:08 +03:00
- rm $( usrbindir) /$( INFO)
2004-04-24 08:50:27 +04:00
- rm $( usrbindir) /$( TESTER)
[PATCH] finally solve the bad sysfs-timing for all of us
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.
2004-10-06 08:35:39 +04:00
- rm $( usrbindir) /$( WAIT)
2003-10-17 11:19:04 +04:00
- rmdir $( hotplugdir)
2004-11-06 16:28:01 +03:00
- rm -rf $( udevdb)
2003-10-17 11:19:04 +04:00
- rmdir $( udevdir)
2004-11-06 16:28:01 +03:00
- killall $( DAEMON)
2003-12-18 05:32:53 +03:00
@extras= " $( EXTRAS) " ; for target in $$ extras ; do \
2003-12-07 20:04:49 +03:00
echo $$ target ; \
$( MAKE) prefix = $( prefix) LD = " $( LD) " SYSFS = " $( SYSFS) " \
-C $$ target $@ ; \
done ; \
2004-10-28 19:19:13 +04:00
test : all
2004-11-11 05:11:40 +03:00
@ cd test && ./udev-test.pl