Re: How to know write end of FIFO has closed

From: Barry Margolin (barmar_at_alum.mit.edu)
Date: 01/21/05 

Date: Thu, 20 Jan 2005 22:50:58 -0500

In article <1106220462.714260.102690@f14g2000cwb.googlegroups.com>,
 sandeep_onsite@yahoo.com wrote:

> Hi,
>
> How to check write end of a FIFO has been closed?
> My problem:
>
> My Linux syslog daemon(syslogd) is sending the syslog messages to a
> FIFO. my application daemon program keeps reading from FIFO using
> blocking read() call.
> When syslogd terminates, read() call always returns 0 bytes, indicating
> EOF. But how do I confirm 0 bytes read was due to syslogd closing the
> write end of the FIFO. Is there any way to check that write end is
> closed.

EOF on a pipe means that the write end was closed. 

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***

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