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Re: PostgreSQL 8.0.3, AIX 5.1, getaddrinfo, AI_NUMERICHOST

From: "Logan O'Sullivan Bruns" <logan(at)gedanken(dot)org>
To: "Mohan, Ross" <RMohan(at)arbinet(dot)com>
Cc: pgsql-ports(at)postgresql(dot)org
Subject: Re: PostgreSQL 8.0.3, AIX 5.1, getaddrinfo, AI_NUMERICHOST
Date: 2005-08-08 20:09:37
Message-ID: 20050808200937.GV6200@pravda.gedanken.org (view raw or flat)
Thread:
Lists: pgsql-ports
I only have access to AIX5.1. On 5.1 the relevant prototype and
defines are in netdb.h.

The man page for has:

struct addrinfo {

  int               ai_flags;          /* AI_PASSIVE, AI_CANONNAME */

Note the absence of AI_NUMERICHOST. It isn't mentioned anywhere in the
man page but it is present in the header. Perhaps it wasn't a complete
implementation for 5.1 but they fixed it by 5.3? 

  - logan

On Mon, Aug 08, 2005 at 06:30:01PM -0000, Mohan, Ross wrote:
> Apparently something amiss. 
> 
> even on AIX5.3, the getaddrinfo.h is ONLY present courtesy of PG distro. 
> 
> 
> I found that odd. 
> 
> 
> But: it's there, and it does the right thing (ver8.0.2)
> 
> 
> -----Original Message-----
> From: pgsql-ports-owner(at)postgresql(dot)org [mailto:pgsql-ports-owner(at)postgresql(dot)org] On Behalf Of Mohan, Ross
> Sent: Monday, August 08, 2005 10:20 AM
> To: pgsql-ports(at)postgresql(dot)org
> Subject: Re: [PORTS] PostgreSQL 8.0.3, AIX 5.1, getaddrinfo, AI_NUMERICHOST
> 
> 
> Wow, nice catch, nice analysis. Checking now whether my AIX5.2/3 boxes set this correctly. 
> 				
> 
> -----Original Message-----
> From: pgsql-ports-owner(at)postgresql(dot)org [mailto:pgsql-ports-owner(at)postgresql(dot)org] On Behalf Of Logan O'Sullivan Bruns
> Sent: Wednesday, August 03, 2005 8:04 PM
> To: pgsql-ports(at)postgresql(dot)org
> Subject: [PORTS] PostgreSQL 8.0.3, AIX 5.1, getaddrinfo, AI_NUMERICHOST
> 
> 
> Hello everyone,
> 
> I ran into a minor bug with PostgreSQL 8.0.3 compiled with xlc on AIX 5.1 (5100-04). Basically it worked fine connecting via unix domain sockets but when you connected to it using TCP/IP with JDBC the child process would SEGV. I tracked the problem to a call to getaddrinfo while evaluating the host based access control rules.
> 
> The code in function parse_hba on line 752 of hba.c sets the ai_flags member of the addrinfo struct to AI_NUMERICHOST. This is eventually passed into a call to getaddrinfo that results in the SEGV. The manual page from the box implies that at least this version of AIX does not the AI_NUMERICHOST flag. (As opposed to, say, Solaris which clearly
> does.)
> 
> Ifdefing the code so that ai_flags is set to zero on AIX fixes the problem.
> 
> Anyway, I hope this is helpful to someone or the right place to send such notes. Please let me know if you need any additional information.
> 
> Thanks,
>   logan
> 
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Next:From: Tom LaneDate: 2005-08-08 21:06:11
Subject: Re: PostgreSQL 8.0.3, AIX 5.1, getaddrinfo, AI_NUMERICHOST
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Subject: Re: PostgreSQL 8.0.3, AIX 5.1, getaddrinfo, AI_NUMERICHOST

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