On Sun, Jun 15, 2014 at 04:25:37PM +0200, Mikael Pettersson wrote: > Andy Lutomirski writes: > > The idea is to add AT_VDSO_FINDSYM pointing at __vdso_findsym. This > > implements __vdso_findsym. > > > > This would make it easier for runtimes that don't otherwise implement > > ELF loaders to use the vdso. > > > > Thoughts? > > I'm opposed to this based on the principle that the kernel should NOT > be a dumping ground for random code that user-space can and should > implement for itself. As long as the vdso is correctly formatted ELF, > then parsing it is easy, and the kernel should not care at all if or > how user-space accesses it.
Arguably, it was a mistake for the kernel to expose a virtual ELF to begin with, and it should just have exposed a "lookup function by name" operation to begin with. Yes this can be done in userspace, but I see it more as a matter of "fixing a broken API design". Rich -- 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/
