[PATCH] Updatd the README

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greg@kroah.com 2003-10-17 01:39:19 -07:00 committed by Greg KH
parent fc1c2fd8b1
commit bf3ca56fd4
1 changed files with 32 additions and 17 deletions

49
README
View File

@ -6,32 +6,47 @@ files in the docs/ directory.
To use:
- Edit the udev.h file and replace the following variables with values
that make sense for your system:
#define UDEV_ROOT "/udev/"
#define MKNOD "/bin/mknod"
The only value most people will have to change is the UDEV_ROOT
variable, as I doubt you really want device nodes to be created in my
home directory :)
- You must be running a 2.6 version of the Linux kernel.
- Run make to build the project.
- 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 sysfs is mounted.
- 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.
- Point /proc/sys/kernel/hotplug at the location of the udev binary that
is created. Then plug some block devices in, or other types of
devices that create dev files in sysfs. An easy way to do this,
without any hardware is to use the scsi_debug module to create virtual
scsi devices.
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
- Watch as the nodes get created and removed.
- Build the project:
make
- 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
Yes this is a really rough first cut, I know. It's mostly a proof of
concept that this can actually work. See the TODO file for a list of
Things are still quite rough, and it's a bit beyond proof of concept
code. 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 know.
greg k-h
greg@kroah.com