Re: [chrony-dev] [GIT] chrony/chrony.git branch master updated. 4.0-pre3-5-g7d3798d

[Vincent Blut <vincent.debian@xxxxxxx>]

On 2020-09-01T14:30+0200, Miroslav Lichvar wrote:
> On Tue, Sep 01, 2020 at 02:08:06PM +0200, Vincent Blut wrote:
> > Hi Miroslav,
> >
> > On 2020-09-01T12:11+0200, git@xxxxxxxxxxxxx wrote:
> > > commit 9ca250755f139c2383ada58198ecfcd7a22954a1
> > > Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
> > > Date:   Mon Aug 31 15:13:39 2020 +0200
> > >
> > >    sys_linux: allow lstat and readlink in seccomp filter
> > >
> > >    These syscalls seem to be needed when gnutls is loading system trusted
> > >    certificates due to p11-kit >= 0.23.21 getting the program name from
> > >    /proc/self/exe.
> >
> > readlinkat() should be added for arm64 and riscv64, then. Patch attached.
>
> Ok. Thanks.
>
> Did you reproduce the issue on those platforms, or do you know how glibc
> implements realpath() there?

It’s just that these two architectures take their generic system call 
definition from “include/uapi/asm-generic/unistd.h” where __NR_readlink 
is not defined. readlinkat() being a superset of readlink(), there is no 
point for recent architectures to support the latter.

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