Re: install/56303: On a fresh installation, /tmp on sparc64 is not sticky

[RVP <rvp%SDF.ORG@localhost>]

The following reply was made to PR install/56303; it has been noted by GNATS.

From: RVP <rvp%SDF.ORG@localhost>
To: Andreas Gustafsson <gson%gson.org@localhost>
Cc: martin%netbsd.org@localhost, gnats-bugs%netbsd.org@localhost, roland.illig%gmx.de@localhost,
        Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>, vezhlys%gmail.com@localhost
Subject: Re: install/56303: On a fresh installation, /tmp on sparc64 is not
 sticky
Date: Tue, 27 Jul 2021 05:48:32 +0000 (UTC)

   This message is in MIME format.  The first part should be readable text,
   while the remaining parts are likely unreadable without MIME-aware tools.
 
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 On Mon, 26 Jul 2021, Andreas Gustafsson wrote:
 
 > Martin Husemann wrote:
 >>  I wonder if this is the same underlying cause (my guess: a tar(1) bug)
 >>  that causes PR install/56326, but I have no idea how to catch it
 >>  (besides sprinkling some kind of logging into the tar binary).
 >
 > Have you looked at rvp's test script and patch?  I couldn't reproduce
 > the problem using the script on -9/amd64, and I don't fully understand
 > the patch, but this line in progress.c which is removed by the patch
 > certainly looks wrong because it's testing errno when no error has
 > occurred:
 >
 >  if (deadpid != -1 && errno == EINTR)
 >
 > I wonder if changing it to this would be sufficient:
 >
 >  if (deadpid == -1 && errno == EINTR)
 >
 
 On Mon, 26 Jul 2021, Izumi Tsutsui wrote:
 
 > Not 100% reproducible, but happens again on 9.2 to 9.2 upgrade:
 > ---
 > -rwxr-xr-x   1 root  wheel  20688364 May 12 13:15 netbsd
 > -rwxr-xr-x   1 root  wheel  13237760 Jul 26 13:52 netbsd17eUKh
 > ---
 >
 
 I'm not able to reproduce this on my HW--might have to set up an
 i386/Sparc Qemu (instructions welcome) to really chase this down,
 but this looks like what happens if the input to tar closes
 unexpectedly (or, you do Ctrl-C in the middle of extraction).
 
 As I noted before, the current progress sometimes loses the status
 of the gzip command, so, I've modified, and simplified, progress.c
 slightly so that it returns a proper exit code every time.
 
 Please try this new version; then we can see what causes tar to
 abort mid-stream.
 
 Thanks,
 -RVP
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