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On 01/09/2014 05:29 PM, Rick "Zero_Chaos" Farina wrote: |
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> |
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> On 01/09/2014 05:21 PM, Michał Górny wrote: |
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>> Dnia 2014-01-09, o godz. 17:06:52 |
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>> "Anthony G. Basile" <blueness@g.o> napisał(a): |
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>> |
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>>> On 01/09/2014 04:57 PM, Pacho Ramos wrote: |
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>>>> What are the advantages of disabling SSP to deserve that "special" |
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>>>> handling via USE flag or easily disabling it appending the flag? |
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>>> There are some cases where ssp could break things. I know of once case |
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>>> right now, but its somewhat exotic. Also, sometimes we *want* to break |
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>>> things for testing. I'm thinking here of instance where we want to test |
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>>> a pax hardened kernel to see if it catches abuses of memory which would |
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>>> otherwise be caught by executables emitted from a hardened toolchain. |
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>>> Take a look at the app-admin/paxtest suite. |
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>> Just to be clear, are we talking about potential system-wide breakage |
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>> or single, specific packages being broken by SSP? In other words, are |
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>> there cases when people will really want to disable SSP completely? |
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>> |
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>> Unless I'm misunderstanding something, your examples sound like you |
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>> just want -fno-stack-protector per-package. I don't really think you |
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>> actually want to rebuild whole gcc just to do some testing on a single |
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>> package... |
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>> |
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> Or just as easily set -fno-stack-protector in CFLAGS in make.conf. |
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> |
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> I never felt manipulating cflags with use flags was a great idea, but in |
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> this case is does feel extra pointless. |
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> |
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> Personally I don't feel this is needed, and the added benefit of |
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> clearing up a bogus "noblah" use flag makes me smile. |
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> |
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> Zorry, do we really need this flag? |
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> |
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> |
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toolchain.eclass currently uses nossp as well as nopie. You'd have to |
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rework that to get rid of the flag. |
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|
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-- |
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Anthony G. Basile, Ph.D. |
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Gentoo Linux Developer [Hardened] |
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E-Mail : blueness@g.o |
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GnuPG FP : 1FED FAD9 D82C 52A5 3BAB DC79 9384 FA6E F52D 4BBA |
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GnuPG ID : F52D4BBA |
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