[Buildroot] [PATCH v2 09/15] fakedate: new package
Jérôme Pouiller
jezz at sysmic.org
Sat Nov 19 13:24:24 UTC 2016
Hello,
On Friday 18 November 2016 12:48:06 Thomas Petazzoni wrote:
> On Fri, 18 Nov 2016 10:10:18 +0100, Jérôme Pouiller wrote:
[...]
> > +PATH=/bin:/usr/bin
>
> It is not really nice to override the PATH. I guess you want to remove
> $(HOST_DIR)/usr/bin from the PATH to not call yourself recursively, but
> I think we should do better than assuming /bin:/usr/bin is OK.
My initial idea was something based on:
sed "s/@@DATE_CMD@@/`which date`/"
However, I worried about people who add $HOST_DIR in their $PATH and
call host-fakedate-reinstall.
However, stripping $(dirname $0) from PATH during runtime seems a good
idea. I will try that.
> > +LOG=/dev/null
>
> This variable is used by?
In my initial version, I logged calls to fakedate in $BUILD_DIR.
I removed the log file, but it may be convenient to easily restore it
if necessary.
> > +if [ -n "$SOURCE_DATE_EPOCH" ]; then
> > + INHIBIT=0
> > + for i in "$@"; do
> > + case $i in
> > + -d|-[!-]*d|--date=*|-f|-[!-]*f|--file=*)
> > + INHIBIT=1
> > + ;;
> > + esac
> > + done
> > + if [ $INHIBIT -eq 0 ]; then
> > + echo "date: Warning: using \$SOURCE_DATE_EPOCH instead of true time" >&2
> > + echo "Catch call to date from `pwd` with parameters: '$@'" >> $LOG
> > + exec date -d "@$SOURCE_DATE_EPOCH" "$@"
> > + fi
> > +fi
> > +
> > +exec date "$@"
>
> Could you explain a bit the logic here?
If this script is called with '--date', '--file' or any aliases of
these option, just call `date' as usual. Else, this script force
returned date.
BR,
--
Jérôme Pouiller, Sysmic
Embedded Linux specialist
http://www.sysmic.fr
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