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Backports of patch from systemd git to stable distributions
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ogasawara@osdl.org 738e5c3f28 [PATCH] gcov for udev
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,
2005-04-26 21:35:16 -07:00
docs [PATCH] add hints for red hat users from Leann Ogasawara <ogasawara@osdl.org> 2005-04-26 21:35:15 -07:00
etc [PATCH] added rules for tun and raw devices 2005-04-26 21:35:16 -07:00
extras [PATCH] udev_selinux changes 2005-04-26 21:35:15 -07:00
klibc [PATCH] fix offsetof() define in klibc. 2005-04-26 21:32:27 -07:00
libsysfs [PATCH] udevd race conditions and performance, assorted cleanups - take 2 2005-04-26 21:35:13 -07:00
tdb [PATCH] make spotless 2005-04-26 21:35:10 -07:00
test [PATCH] udevd test script 2005-04-26 21:35:15 -07:00
ChangeLog [PATCH] v024 release 2005-04-26 21:35:15 -07:00
COPYING [PATCH] added initial documentation and gpl license 2005-04-26 21:00:32 -07:00
dev_d.c [PATCH] DEVNODE -> DEVNAME transition fixes 2005-04-26 21:35:15 -07:00
FAQ [PATCH] add a question/answer about automounting usb devices to the FAQ. 2005-04-26 21:35:10 -07:00
HOWTO-udev_for_dev [PATCH] fix HOWTO-udev_for_dev for udevdir 2005-04-26 21:35:10 -07:00
klibc_fixups.c [PATCH] udevd race conditions and performance, assorted cleanups - take 2 2005-04-26 21:35:13 -07:00
klibc_fixups.h [PATCH] udevd race conditions and performance, assorted cleanups - take 2 2005-04-26 21:35:13 -07:00
list.h [PATCH] Initial namedev parsing of config files 2005-04-26 21:01:38 -07:00
logging.h [PATCH] overall trivial trivial cleanup 2005-04-26 21:35:08 -07:00
make_gcov.sh [PATCH] add scripts to run gcov for udev from Leann Ogasawara <ogasawara@osdl.org> 2005-04-26 21:35:15 -07:00
Makefile [PATCH] Fix build process for users who have LC_ALL set to a non-english language. 2005-04-26 21:35:15 -07:00
namedev_parse.c [PATCH] dev_d.c file sorting and cleanup 2005-04-26 21:35:12 -07:00
namedev.c [PATCH] fix test regressions 2005-04-26 21:35:16 -07:00
namedev.h [PATCH] dev_d.c file sorting and cleanup 2005-04-26 21:35:12 -07:00
README [PATCH] remove USE_DBUS and USE_SELINUX flags from the README as they are no longer present. 2005-04-26 21:35:11 -07:00
README-gcov_for_udev [PATCH] gcov for udev 2005-04-26 21:35:16 -07:00
run_gcov.sh [PATCH] add scripts to run gcov for udev from Leann Ogasawara <ogasawara@osdl.org> 2005-04-26 21:35:15 -07:00
TODO [PATCH] update the TODO list as we already have a devfs config file. 2005-04-26 21:35:07 -07:00
udev_config.c [PATCH] DEVPATH for netdev 2005-04-26 21:35:13 -07:00
udev_lib.c [PATCH] DEVNODE -> DEVNAME transition fixes 2005-04-26 21:35:15 -07:00
udev_lib.h [PATCH] DEVNODE -> DEVNAME transition fixes 2005-04-26 21:35:15 -07:00
udev-add.c [PATCH] fix devpath for netdev 2005-04-26 21:35:15 -07:00
udev-remove.c [PATCH] DEVPATH for netdev 2005-04-26 21:35:13 -07:00
udev.8.in [PATCH] man page cleanup 2005-04-26 21:35:14 -07:00
udev.c [PATCH] hmm, handle net devices with udev? 2005-04-26 21:35:12 -07:00
udev.h [PATCH] DEVPATH for netdev 2005-04-26 21:35:13 -07:00
udev.spec [PATCH] v024 release 2005-04-26 21:35:15 -07:00
udevd.8 [PATCH] increase udevd event timeout 2005-04-26 21:35:14 -07:00
udevd.c [PATCH] udevd test script 2005-04-26 21:35:15 -07:00
udevd.h [PATCH] increase udevd event timeout 2005-04-26 21:35:14 -07:00
udevdb.c [PATCH] netdev - udevdb+dev.d changes 2005-04-26 21:35:13 -07:00
udevdb.h [PATCH] udev - reverse user query options 2005-04-26 21:13:17 -07:00
udevinfo.8 [PATCH] update bk ignore list some more. 2005-04-26 21:35:14 -07:00
udevinfo.c [PATCH] netdev - udevdb+dev.d changes 2005-04-26 21:35:13 -07:00
udevruler.c [PATCH] handle netdev in udevruler 2005-04-26 21:35:14 -07:00
udevsend.c [PATCH] udevd race conditions and performance, assorted cleanups - take 2 2005-04-26 21:35:13 -07:00
udevstart.8 [PATCH] update bk ignore list some more. 2005-04-26 21:35:14 -07:00
udevstart.c [PATCH] udevstart fix 2005-04-26 21:35:14 -07:00
udevtest.8 [PATCH] update bk ignore list some more. 2005-04-26 21:35:14 -07:00
udevtest.c [PATCH] handle the subsytem if provided in udevtest. 2005-04-26 21:35:14 -07:00

udev - a userspace implementation of devfs

For more information on the design, and structure of this project, see the
files in the docs/ directory.

To use:

- You must be running a 2.6 version of the Linux kernel.

- Your 2.6 kernel must have had CONFIG_HOTPLUG enabled when it was built.

- Make sure sysfs is mounted.  udev will figure out where sysfs is mounted, but
  the traditional place for it is at /sys.  You can mount it by hand by running:
  	mount -t sysfs none /sys

- Make sure you have the latest version of the linux-hotplug scripts.  They are
  available at linux-hotplug.sf.net or from your local kernel.org mirror at:
	kernel.org/pub/linux/utils/kernel/hotplug/
  They are required in order for udev to work properly.

  If for some reason you do not install the hotplug scripts, you must tell the
  kernel to point the hotplug binary at wherever you install udev at.  This can
  be done by:
	echo "/sbin/udev" > /proc/sys/kernel/hotplug

- Build the project:
	make

  Note:
      There are a number of different flags that you can use when building
      udev.  They are as follows:
	prefix
		set this to the default root that you want udev to be
		installed into.  This works just like the 'configure --prefix'
		script does.  Default value is ''.  Only override this if you
		really know what you are doing.
	USE_KLIBC
		if set to 'true', udev is built and linked against the
		included version of klibc.  Default value is 'false'.
	USE_LOG
		if set to 'true', udev will emit messages to the syslog when
		it creates or removes device nodes.  This is helpful to see
		what udev is doing.  This is enabled by default.  Note, if you
		are building udev against klibc it is recommended that you
		disable this option (due to klibc's syslog implementation.)
	DEBUG
		if set to 'true', debugging messages will be sent to the syslog
		as udev is run.  Default value is 'false'.
	KERNEL_DIR
		If this is not set it will default to /lib/modules/`uname -r`/build
		This is used if USE_KLIBC=true to find the kernel include
		directory that klibc needs to build against.  This must be set
		if you are not building udev while running a 2.6 kernel.

      So, if you want to build udev using klibc with debugging messages, you
      would do:
	make USE_KLIBC=true DEBUG=true

- Install the project:
	make install

  This will put the udev binary in /sbin, create the /udev and /etc/udev
  directories, and place the udev configuration files in /etc/udev.  You
  will probably want to edit the namedev.* files to create custom naming
  rules.  More info on how the config files are set up are contained in
  comments in the files, and is located in the documentation.

- Add and remove devices from the system and marvel as nodes are created
  and removed in /udev/ based on the device types.

- If you later get sick of it, uninstall it:
	make uninstall


Things are still quite rough, but it should work properly.  If nothing
seems to happen, make sure your build worked properly by running the
udev-test.pl script as root in the test/ subdirectory of the udev source
tree.

Development and documentation help is very much appreciated, see the TODO
file for a list of things left to be done.


Any comment/questions/concerns please let me and the other udev developers
know by sending a message to the linux-hotplug-devel mailing list at:
	linux-hotplug-devel@lists.sourceforge.net

greg k-h
greg@kroah.com