update README

[elogind.git] / README

diff --git a/README b/README
index 148217d16a3e1b9f59e2612e5df053aa4669ab85..5a8d4cc0b3ea9ea8808bec0dd9327efe43a55eb3 100644 (file)
--- a/README
+++ b/README
@@ -13,7 +13,7 @@ Tools and rules shipped by udev are not public API and may change at any time.
 Never call any private tool in /lib/udev from any external application; it might
 just go away in the next release. Access to udev information is only offered
 by udevadm and libudev. Tools and rules in /lib/udev and the entire contents of
 Never call any private tool in /lib/udev from any external application; it might
 just go away in the next release. Access to udev information is only offered
 by udevadm and libudev. Tools and rules in /lib/udev and the entire contents of

-the /dev/.udev directory are private to udev and do change whenever needed.
+the /run/udev directory are private to udev and do change whenever needed.

 
 Requirements:
   - Version 2.6.34 of the Linux kernel with sysfs, procfs, signalfd, inotify,
 
 Requirements:
   - Version 2.6.34 of the Linux kernel with sysfs, procfs, signalfd, inotify,


@@ -59,21 +59,21 @@ Requirements:
     available.
 
   - Some udev extras have external dependencies like:
     available.
 
   - Some udev extras have external dependencies like:

-      libacl, libglib2, libusb, usbutils, pciutils, and gperf.
+      libacl, libglib2, usbutils, pciutils, and gperf.

     All these extras can be disabled with configure options.
 
 Setup:
   - At bootup, the /dev directory should get the 'devtmpfs' filesystem
     mounted. Udev manages the permissions and ownership of the kernel-created
     device nodes, and udev possibly creates additional symlinks. If needed, udev also
     All these extras can be disabled with configure options.
 
 Setup:
   - At bootup, the /dev directory should get the 'devtmpfs' filesystem
     mounted. Udev manages the permissions and ownership of the kernel-created
     device nodes, and udev possibly creates additional symlinks. If needed, udev also

-    works on an empty 'tmpfs' filesystem, but some static device nodes like
-    /dev/null, /dev/console, /dev/kmsg are needed to be able to start udev itself.
+    works on an empty 'tmpfs' filesystem, but some device nodes like
+    /dev/null, /dev/console, /dev/kmsg should be created before udevd is started.

 
   - The udev daemon should be started to handle device events sent by the kernel.
 
   - The udev daemon should be started to handle device events sent by the kernel.

-    During bootup, the kernel can be asked to send events for all already existing
-    devices so that they too can be configured by udev. This is usually done by:
-      /sbin/udevadm trigger --type=subsystems
-      /sbin/udevadm trigger --type=devices
+    During bootup, the events for already existing devices can be replayed, so
+    that they are configured by udev. This is usually done by:
+      /sbin/udevadm trigger --action=add --type=subsystems
+      /sbin/udevadm trigger --action=add --type=devices

 
   - Restarting the daemon never applies any rules to existing devices.
 
 
   - Restarting the daemon never applies any rules to existing devices.
 


@@ -82,13 +82,13 @@ Setup:
 
 Operation:
   - Based on events the kernel sends out on device creation/removal, udev
 
 Operation:
   - Based on events the kernel sends out on device creation/removal, udev

-    creates/removes device nodes in the /dev directory.
+    creates/removes device nodes and symlinks in the /dev directory.

 
   - All kernel events are matched against a set of specified rules, which
     possibly hook into the event processing and load required kernel
     modules to set up devices. For all devices, the kernel exports a major/minor
     number; if needed, udev creates a device node with the default kernel
 
   - All kernel events are matched against a set of specified rules, which
     possibly hook into the event processing and load required kernel
     modules to set up devices. For all devices, the kernel exports a major/minor
     number; if needed, udev creates a device node with the default kernel

-    name. If specified, udev applies permissions/ownership to the device
+    device name. If specified, udev applies permissions/ownership to the device

     node, creates additional symlinks pointing to the node, and executes
     programs to handle the device.
 
     node, creates additional symlinks pointing to the node, and executes
     programs to handle the device.