[Pkg-libburnia-devel] Reproducible patches for libisoburn and libisofs
lamby at debian.org
Fri Aug 19 16:22:05 UTC 2016
> > *iff* SOURCE_DATE_EPOCH is set:
> > - mtimes are taken from stat(2). [The FS creator is responsible for
> > ensuring they are reproducible, possibly by some "clamping" call
> > to `find -newermt | xargs touch …`.]
> > - atime is copied from mtime [as FS creator "can't" set that].
> > - ctime is copied from mtime [ditto].
> man 2 utime promises to set atime and xorriso tries to restore it when
> extracting files to disk.
I put "can't" in quotes as there is no pervasive/widespread shell-level
tool for this (cf. touch(1)) so I stand by this.
> But for ctime i know no portable method.
> Export SOURCE_DATE_EPOCH and forget about any other time issues which
> you don't create yourself by own xorriso arguments.
I'm sorry but I don't quite follow and I don't want to read what I want
to read. Please could you clarify exactly the behaviour in this case?
> Looks like --set_all_file_dates is losing its only user even before it
> gets released.
(Which is good; the less options the better IMHO.)
> > I am therefore not testing them from
> > the "Debian" point of view and ACKs are simply my own testcases.
> Any ACK or NAK is highly welcome.
I'm sure; I was just trying to avoid the case of — heaven forbid we broke
the Debian CD creation! — that we would get the blame as ACKing on their
: :' : Chris Lamb
`. `'` lamby at debian.org / chris-lamb.co.uk
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