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Quick summary: easyroot under diablo doesn't allow me to chmod/chown files.

Details:
Up till now, I have been using OS2007 with becomeroot, with no surprises - always worked as expected. Yesterday, I upgraded to diablo and installed easyroot. I then switched to root (both 'sudo gainroot' and 'root' methods give essentially the same results). The switch appears to work: that is, 'whoami' responds 'root', and the 'sudo gainroot' version takes me to the root directory as expected. However I'm a little doubtful whether I am _really_ gaining root privileges, as I set up a root passwd, but this password is not required during the root gaining process.

Anyway, the main problem is this. I have a directory of files that I need to make executable (well, really only a few need to be executable, but I'm lazy...). Currently, they have ownership 'user root' and permissions 644. 'chmod 755 *' or 'chmod a+x *' appear to work (that is, there are no error messages), but the file permissions don't actually change. On the other hand, 'chown root *' fails, giving "Operation not permitted" for each file.

In case it's relevant:
.The file system (on mmc2) appears to be writable (for example, I can copy the whole directory with no problems - but the copy ends up with the same permissions, and I am unable to change them either).
.What I'm trying to install is the kbdd package.

Any suggestions would be greatly appreciated.

It's vfat that you are having trouble with. There is no concept of "owner" and the mount is specifically noexec so you can't run binaries off the mount point either.

i can find rootsh, but can not find easyroot in maemo repository extras or extras devel.

Its 3rd party; see this thread.

rootsh is a replacement which should be used as it's easily accessed through Extras.

It can be used instead of easyroot or becomeroot in all circumstances.