Index: zaptel.h
===================================================================
--- zaptel.h	(.../1.4-orig/zaptel.h)	(révision 13)
+++ zaptel.h	(.../sysfs/zaptel.h)	(révision 20)
@@ -1134,6 +1134,39 @@
 	int	lastdetect;
 } sf_detect_state_t;
 
+
+
+#ifdef CONFIG_ZAP_UDEV
+
+/* Zaptel Sysfs defines and structures */
+
+/* @brief the default type for zaptel's devices 
+*
+* This type is currently set for zaptranscode/zapctl/zaptimer/zappseudo/zapchannel
+*/
+#define ZT_DEVICE_TYPE_DEFAULT 0
+
+/* @brief the type for channels devices */
+#define ZT_DEVICE_TYPE_CHANNEL 1
+
+/* @brief the type for spans devices */
+#define ZT_DEVICE_TYPE_SPAN    2
+/* 
+* @note the above defines may be needed even in user-space context
+* because we may expose the device type in sysfs attributes
+* or in uevent environment variables.
+*/
+
+#ifdef __KERNEL__
+/* @brief opaque structure to be added into spans and channels 
+* that represent their sysfs representation
+*/
+struct zt_sysfs_device;
+#endif /* __KERNEL__ */
+
+#endif /* CONFIG_ZAP_UDEV */
+
+
 struct zt_chan {
 #ifdef CONFIG_ZAPATA_NET
 	/* Must be first */
@@ -1341,6 +1374,11 @@
 	devfs_handle_t fhandle;  /* File handle in devfs for the channel */
 	devfs_handle_t fhandle_symlink;
 #endif /* CONFIG_DEVFS_FS */
+
+#ifdef CONFIG_ZAP_UDEV
+	/* sysfs representation of this channel */
+	struct zt_sysfs_device *sysfs_dev; 
+#endif
 };
 
 /* defines for transmit signalling */
@@ -1495,7 +1533,16 @@
 #ifdef CONFIG_ZAPTEL_WATCHDOG
 	int watchcounter;
 	int watchstate;
-#endif	
+#endif
+	
+#ifdef CONFIG_ZAP_UDEV
+	/* Opt: the span's real device (if possible to get) 
+	* drivers should set it before calling zt_register
+	*/
+	struct device *device;
+	/* sysfs representation of this span */
+	struct zt_sysfs_device *sysfs_dev;
+#endif
 };
 
 struct zt_transcoder_channel {