Re: shmctl portability problem - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: shmctl portability problem
Date
Msg-id 200201040459.g044xgm23040@candle.pha.pa.us
Whole thread Raw
In response to shmctl portability problem  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
> The easy "fix" of taking EIDRM to be an allowable return code scares
> me.  At least on HPUX, the documented implication of this return code
> is that the shmem segment is marked for deletion but is not yet gone
> because there are still processes attached to it.  That would be
> exactly the scenario after a postmaster crash and manual "ipcrm" if
> there were any old backends still alive.  So, it seems to me that
> accepting EIDRM would defeat the entire point of this test, at least
> on some platforms.
> 
> Comments?  Is 2.4.7 simply broken and returning the wrong errno?
> If not, what should we do?

Seems we have to contact linux kernel guys or dig into the kernel
ourselves to see why that is being returned.  I do have EIDRM in BSD/OS.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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