Messages in this thread | | | Subject | Re: ownership/permissions of cpio initrd | Date | Tue, 05 Dec 2006 17:07:49 -0300 | From | "Horst H. von Brand" <> |
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Marty Leisner <linux@rochester.rr.com> wrote: > I'm working on an embedded system with the 2.6 kernel -- cpio > initrd was a new feature I'm looking at (and very welcome). > > The major advantage I see is you don't have MAKE a filesystem > on the build host (doing cross development). So you don't have > to be root.
> But its "useful" to change permissions/ownership of the initrd > files at times...
> Since a cpio is just a userspace created string of bits, I suppose > you can apply a set of ownership/permissions to files IN the archive > by playing with the bits...
The easy way out is to unpack the initrd, fix permissions, and repack. That requires root, though (it creates devices).
> Does such a tool exist? Comments? Seems very useful in order to > avoid being root...
I'd use sudo(1) + specially cooked commands to unpack/pack an initrd. It is a bit more work, but gives you extra flexibility (i.e., not just futzing around with permissions, can also add/replace/edit/rename/delete files, ... using bog standard tools). -- Dr. Horst H. von Brand User #22616 counter.li.org Departamento de Informatica Fono: +56 32 2654431 Universidad Tecnica Federico Santa Maria +56 32 2654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 2797513 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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