On Mon, Feb 2, 2015 at 10:08 AM, Serge Hallyn <serge.hal...@ubuntu.com> wrote: > Quoting Casey Schaufler (ca...@schaufler-ca.com): >> I'm game to participate in such an effort. The POSIX scheme >> is workable, but given that it's 20 years old and hasn't >> developed real traction it's hard to call it successful. > > Over the years we've several times discussed possible reasons for this > and how to help. I personally think it's two things: 1. lack of > toolchain and fs support. The fact that we cannot to this day enable > ping using capabilities by default because of cpio, tar and non-xattr > filesystems is disheartening. 2. It's hard for users and applications > to know what caps they need. yes the API is a bear to use, but we can > hide that behind fancier libraries. But using capabilities requires too > much in-depth knowledge of precisely what caps you might need for > whatever operations library may now do when you asked for something.
None of this could address the problem here, though: if I hold a capability and I want to pass that capability to an exec'd helper, I shouldn't need the fs's help to do this. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
