Do the file timestamps in ISOs matter ?
Thomas Schmitt
scdbackup at gmx.net
Fri Sep 2 13:37:30 UTC 2016
Hi,
i wrote:
> > new program option: --set_all_file_dates [...]
Chris Lamb wrote:
> I believe this option is entirely unnecessary. No need to
> complicate things.
It is architecturally needed, because if SOURCE_DATE_EPOCH sets the
default, there must be some option to set non-default values, especially
the value which is default without SOURCE_DATE_EPOCH.
I decided to let SOURCE_DATE_EPOCH only set the defaults of existing
and new options, in order to protect ISO producers like grub-mkrescue from
negative effects by overriding their program options.
(grub-mkrescue uses --modification-date= to set the text in ISO 9660 field
Volume Modification Date, so that GRUB command
search --fs-uuid --set YYYY-MM-DD-hh-mm-ss-cc
can look it up.)
Not to forget that it offers those users a workaround, who do not agree
with the final decision about the question posed here, but want to use
SOURCE_DATE_EPOCH nevertheless.
Have a nice day :)
Thomas
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