Hi All,

How do i detect insertion/removal of external devices like SD card, USB devices etc., in my program, which should be running in thread. If single API is available, it will be too good. Otherwise, please suggest me the how to achieve that.

Regards,
Pramod`

Greetingz!

For most USB, FireWire, and Hot-Pluggable SCSI devices, you should catch an entry in your syslog. On a Linux system, you want to watch the /var/log/messages file. However, check your /etc/syslog.conf or /etc/syslog-ng.conf file to be sure.

As for detecting SD card insertion and removal. If it's a built-in SD card reader, the syslog method above should apply. However, if it's an external USB card reader, there's a good chance that nothing will get reported. (I've had several multi-format card readers fail to detect when a new card was inserted, typically I wind up having to unplug/replug the reader.)

Click the thumbs-up if this helps!

use dbus+hald.

Hi,
is it possible to help me foe implementation in C programming? Or how should i prooced? Could u please give me the alogrithm?

dbus is messaging system. Application "connect" to this bus an listen. When some event in some app happend dbus delivers this event to another subscribed on this event app.
hald generates some event when kernel reports when some new device was found. You need to make your program dbus-client capable and listen for hald events. I think you can find some documentation on the site. There are examples should be somewhere too.
http://dbus.freedesktop.org/doc/dbus-tutorial.html
http://docs.sun.com/app/docs/doc/819-2252/hal-5?a=view
http://allinweb.blogspot.com/2009/04...act-layer.html
http://madison-project.wdfiles.com/l...l_Tutorial.pdf
Good luck!
If you finish please make some post. What you get, problems and so on. Im going to use hal in future maybe I event will have the same task as you do.
ps. Of course you can watch on syslog event directly. I mean solution was proposed in post above. If you need simple solution do that way. But I would do it with hald.