[PATCH] add documentation about the BUS key being optional for the CALLOUT rule.

[elogind.git] / udev.8

diff --git a/udev.8 b/udev.8
index 5e411282fff4b3f1b20e09ebc479565aa1dfe8b7..0a0640ad8c95d633e76cd2704f95d86077bc63ed 100644 (file)
--- a/udev.8
+++ b/udev.8
@@ -106,7 +106,10 @@ The line format is:
 where valid methods with corresponding keys are:
 .TP
 .B CALLOUT
-calling external program, that returns a string to match
+calling external program, that returns a string to match.  The 
+.BR BUS 
+key is optional, but if specified, the sysfs device bus must be able to be
+detemined by a "device" symlink.
 .br
 .RB "keys: " BUS ", " PROGRAM ", " ID
 .TP
@@ -142,6 +145,9 @@ fields support simple printf-like string substitution:
 The "kernel number" of the device.
 for example, 'sda3' has a "kernel number" of '3'
 .TP
+.B %k
+The "kernel name" for the device.
+.TP
 .B %M
 The kernel major number for the device.
 .TP