Messages in this thread |  | | Subject | Re: 2.2.X patch query (with initial PATCH against 2.2.17) | Date | Tue, 31 Oct 2000 16:38:00 -0300 | From | Horst von Brand <> |
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Dominik Kubla <dominik.kubla@uni-mainz.de> said: > On Tue, Oct 31, 2000 at 01:38:56PM +0000, Riley Williams wrote: > ... > > Also, part of my plan was to check that the disk is already in this > > non-standard format, and refuse to dump if not. This would ensure that > > doing so didn't overwrite somebody's master boot disk by accident, as > > such disks will not normally be in this non-standard format.
> Just write a magic number somewhere to the disk and mark these blocks > bad in the fat. Then just check if the blocks are marked as bad and > contain the magic number. No need for a special disk format per se...
Why any filesystem at all? Just dump the whole on the diskette in the drive. If root doesn't know what they are doing fiddling with SysRq, they deserve it in any case. No FAT, MS-DOS, VFAT or whatever. Just a plain formated diskette. Remember, this has to be absolutely as simple and robust as possible, and have minimal impact on the rest of the kernel (no "must now pull in RW-floppy-format + fat + msdos modules to do SysRq-D", no "<foo> must be built into the kernel for SysRq-D to work" (at most "floppy in kernel", more can be hard to swallow in limited environments where this will be most needed as the only/principal way of looking at logs)). -- Dr. Horst H. von Brand mailto:vonbrand@inf.utfsm.cl Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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