The following bug has been logged online:

Bug reference: 1467
Logged by: Florian Hars
Email address: hars@bik-gmbh.de
PostgreSQL version: 8.0.1
Operating system: All
Description: fe_connect doesn't handle EINTR right
Details:

The file pgsql/src/interfaces/libpq/fe-connect.c contains the code fragment

retry_connect:
if (connect(conn->sock, addr_cur->ai_addr,
addr_cur->ai_addrlen) < 0)
{
if (SOCK_ERRNO == EINTR)
/* Interrupted system call - just try again */
goto retry_connect;
}

This is not in accordance with a strict legalistic reading of the POSIX
spec, according to which connect is not restartable so that you have to use
select or poll after connect returned with EINTR.

See
http://www.eleves.ens.fr:8080/home/m...nect-intr.html
for the ugly details, your code should work on Linux, but not on Solaris or
(Free|Open)BSD.

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TIP 4: Don't 'kill -9' the postmaster

I think this has been corrected in 8.1.

---------------------------------------------------------------------------

Florian Hars wrote:
>
> The following bug has been logged online:
>
> Bug reference: 1467
> Logged by: Florian Hars
> Email address: hars@bik-gmbh.de
> PostgreSQL version: 8.0.1
> Operating system: All
> Description: fe_connect doesn't handle EINTR right
> Details:
>
> The file pgsql/src/interfaces/libpq/fe-connect.c contains the code fragment
>
> retry_connect:
> if (connect(conn->sock, addr_cur->ai_addr,
> addr_cur->ai_addrlen) < 0)
> {
> if (SOCK_ERRNO == EINTR)
> /* Interrupted system call - just try again */
> goto retry_connect;
> }
>
> This is not in accordance with a strict legalistic reading of the POSIX
> spec, according to which connect is not restartable so that you have to use
> select or poll after connect returned with EINTR.
>
> See
> http://www.eleves.ens.fr:8080/home/m...nect-intr.html
> for the ugly details, your code should work on Linux, but not on Solaris or
> (Free|Open)BSD.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>

--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073

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