Originally Posted by Knolly
What exactly does Fix Permissions in CWM do? Whenever I run it as part of installing the Google Wallet hack, it stops a good chunk of my programs from working without uninstalling and then reinstalling them from the market.
It pretty much does what the name implies. It goes through the phone and sets the correct permissions for apps, and I guess other files as well (read write execute). If they aren't set correctly they won't work right.
If you look in /system/app/ you'll see all the files have the same permissions. rw-r--r--. Each set of permissions is really 3 different users (owner, group, and others). so owner has read and write permission, group and other only have read access. none of them get execute access.