Insert link to self in post

For Feed purposes, I’d like images in my posts to link back to the actual post:

[a href=”take me to this post”][img src=”my image”][/a]

While I could manually enter the full path of the url as plain html, it would be awfully nice to grab the post’s url automatically:

[a href=”[?php Get_My_Url();?] …

My understanding is that putting php code into WP 2.3.2 posts is somewhat problematic.

Is there any kind of shortcut available within posts to grab the post’s url?

Andy