Re: semaphore usage "port based"? - Mailing list pgsql-hackers

From Kris Kennaway
Subject Re: semaphore usage "port based"?
Date
Msg-id 20060403031157.GA57914@xor.obsecurity.org
Whole thread Raw
In response to Re: semaphore usage "port based"?  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On Sun, Apr 02, 2006 at 11:08:11PM -0400, Tom Lane wrote:

> I venture that FBSD 6 has decided to return ESRCH (no such process)
> where FBSD 4 returned some other error that acknowledged that the
> process did exist (EPERM would be a reasonable guess).
>
> If this is the story, then FBSD have broken their system and must revert
> their change.  They do not have kernel behavior that totally hides the
> existence of the other process, and therefore having some calls that
> pretend it's not there is simply inconsistent.

I'm guessing it's a deliberate change to prevent the information
leakage between jails.

Kris

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