| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Devrim Gündüz <devrim(at)gunduz(dot)org>, pgsql-hackers(at)postgresql(dot)org, philip(dot)dub(at)microsoft(dot)com, jelte(dot)fennema(at)microsoft(dot)com |
| Subject: | Re: initdb --pwfile /dev/zero |
| Date: | 2021-09-17 18:48:42 |
| Message-ID: | 1346090.1631904522@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> A colleague tried PG 14 internally and it failed during cluster creation, when
> using the PGDG rpm packages. A bit of debugging shows that the problem is
> that the packaging script specifies the password using --pwfile /dev/zero.
> In 14+ this turns out to lead to an endless loop in pg_get_line_append().
Well, that's because that file will source an infinite amount of stuff.
> I think we still ought to make pg_get_line() a
> bit more resilient against '\0'?
I don't think '\0' is the problem. The only fix for this would be to
re-introduce some fixed limit on how long a line we'll read, which
I'm not too thrilled about. I think this is better classified as
user error.
regards, tom lane
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