| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Christoph Berg <myon(at)debian(dot)org> |
| Cc: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>, petar(at)smokva(dot)net, pgsql-bugs(at)lists(dot)postgresql(dot)org |
| Subject: | Re: BUG #15120: use of getcwd(3)/chdir(2) during path resolution (exec.c) |
| Date: | 2018-03-17 20:47:16 |
| Message-ID: | 20793.1521319636@sss.pgh.pa.us |
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| Lists: | pgsql-bugs |
Christoph Berg <myon(at)debian(dot)org> writes:
> Re: Andrew Gierth 2018-03-17 <87in9uhbco(dot)fsf(at)news-spur(dot)riddles(dot)org(dot)uk>
>> Tom> I think your example of "sudo /usr/bin/pg_ctl" is pretty
>> Tom> artificial; who'd bother spelling that out?
>>
>> Not necessarily exactly like that, but we do occasionally get this issue
>> coming up on the IRC channel.
> It's absolutely not artificial. I can easily trigger the message from
> my home directory:
> $ chmod 700 .
> $ sudo -u postgres psql
> could not change directory to "/home/cbe": Permission denied
No, I think you missed my point: I thought typing "sudo ... /usr/bin/pg_ctl"
rather than just "sudo ... pg_ctl" seemed artificial. Your example
doesn't exactly contradict that. It's relevant here because it affects
whether or not argv[0] is already an absolute path.
regards, tom lane
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