--- trunk/udev/udev-cd-aliases-generator.rules.magellan	2008/03/22 18:06:28	512
+++ trunk/udev/udev-cd-aliases-generator.rules.magellan	2009/10/13 10:46:20	884
@@ -1,9 +1,29 @@
 # /etc/udev/rules/75-cd-aliases-generatory.rules:  device naming rules for udev
-# $Header: /root/magellan-cvs/src/udev/udev-cd-aliases-generator.rules.magellan,v 1.2 2008-03-22 18:06:06 niro Exp $
+# $Header: /root/magellan-cvs/src/udev/udev-cd-aliases-generator.rules.magellan,v 1.4 2009-10-13 10:46:20 niro Exp $
+#
+# There are a number of modifiers that are allowed to be used in some
+# of the different fields. They provide the following subsitutions:
+# %n - the "kernel number" of the device.
+#      For example, 'sda3' has a "kernel number" of '3'
+# %k - the kernel name for the device.
+# %M - the kernel major number for the device
+# %m - the kernel minor number for the device
+# %b - the bus id for the device
+# %c - the string returned by the PROGRAM. (Note, this doesn't work within
+#      the PROGRAM field for the obvious reason.)
+# %s{filename} - the content of a sysfs attribute.
+# %% - the '%' char itself.
+#
+# Try not to modify this file, if you wish to change things, create a new rule
+# file that can be run before this one.
+#
 
 # these rules generate rules for the /dev/{cdrom,dvd,...} symlinks
 
-# the path of removable devices changes frequently
-ACTION=="add", SUBSYSTEM=="block", SUBSYSTEMS=="usb|ieee1394", ENV{ID_CDROM}=="?*", ENV{GENERATED}!="?*", PROGRAM="write_cd_rules by-id", SYMLINK+="%c"
+# the "path" of usb/ieee1394 devices changes frequently, use "id"
+ACTION=="add", SUBSYSTEM=="block", SUBSYSTEMS=="usb|ieee1394", ENV{ID_CDROM}=="?*", ENV{GENERATED}!="?*", \
+  PROGRAM="write_cd_rules by-id", SYMLINK+="%c", GOTO="persistent_cd_end"
 
 ACTION=="add", SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{GENERATED}!="?*", PROGRAM="write_cd_rules", SYMLINK+="%c"
+
+LABEL="persistent_cd_end"