Re: [PATCH] Add finit_module syscall for Linux

[Mike Frysinger <vapier at gentoo dot org>]

On Tuesday 22 January 2013 23:06:06 Kees Cook wrote:
> On Tue, Jan 22, 2013 at 7:34 PM, Mike Frysinger <vapier@gentoo.org> wrote:
> > On Tuesday 22 January 2013 22:16:38 Joseph S. Myers wrote:
> >> On Tue, 22 Jan 2013, Kees Cook wrote:
> >> > This adds the new Linux finit_module() syscall.
> >> 
> >> There's no point in adding syscalls to syscalls.list without at least
> >> adding a symbol version so the function is actually exported from
> >> libc.so. Note that in the kexec_load discussion last May / June, doubts
> >> were expressed about whether some existing module-related syscalls
> >> really should have had functions in glibc.
> > 
> > the lack of a header file that exports prototypes for these functions
> > seems like bad form too (not a new issue to finit_module)
> 
> I got the impression those were auto-generated from syscalls.list
> (which contains the prototype in an encoded for ("i:isi" in
> finit_module's case). And that this generation is what converts the
> syscall into return value and errno?

syscalls.list auto generates the simple funcs in glibc that are glorified 
syscall() calls, but they don't (afaik) generate headers.  grepping installed 
glibc headers doesn't show any match that i can see either.
-mike

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