| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
| Cc: | Magnus Hagander <magnus(at)hagander(dot)net>, Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL-documentation <pgsql-docs(at)postgresql(dot)org>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] Moving tablespaces |
| Date: | 2011-12-04 17:07:31 |
| Message-ID: | 26148.1323018451@sss.pgh.pa.us |
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| Lists: | pgsql-docs pgsql-hackers |
Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> On 12/04/2011 11:41 AM, Tom Lane wrote:
>> Hm, how portable is symlink-reading? If we can actually do that
>> without big headaches, then +1.
> I wondered that, specifically about Windows junction points, but we seem
> to have support for it already in dirmod.c::pgreadlink(). Surely there's
> no other currently supported platform where it would even be a question?
readlink is required by Single Unix Spec v2 (1997), which is what we've
been treating as our baseline expectation for Unix-oid platforms for
awhile now. Given that we dealt with the Windows side already, I don't
see a problem with making this assumption. At worst we'd end up needing
a couple more emulations in src/port, since surely there's *some* way to
do it on any platform with symlinks.
regards, tom lane
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