Messages in this thread | | | Date | Sun, 15 Jun 2014 10:05:47 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [RFC 0/2] __vdso_findsym |
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On 06/15/2014 07:35 AM, Rich Felker wrote: > > 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". >
What the fsck are you smoking? There is immense value in providing a stable and very well-defined data structure, which also happens to be what dynamic linkers already want to consume. Providing a helper for crippled libc applications has potential value. Shaving a few hundred bytes off static applications is a very weak argument, simply because it is such a small fraction of the enormous cost of a static application, and static applications are problematic in a number of other ways, especially the lack of ability to fix bugs.
Treating the kernel as an ersatz dynamic library for "static" applications is kind of silly -- after all, why not provide an entire libc in the vdso? I have actually seen people advocate for doing that.
-hpa
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