Can a PIPE input be FLUSHED?

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2 total messages Started by Rod Tolosa Wed, 05 Aug 1998 00:00

#95

Author: Rod Tolosa
Date: Wed, 05 Aug 1998 00:00

9 lines
1045 bytes

I'm reading from a pipe file that I created using mknod -p.

What I'd like to do is when I open up the file or at certain
times, be able to FLUSH any input on this pipe.

I checked ioctl calls, socket calls, include files, and the pipe.c
source code. I could not find anything.

Does anyone know what command I can use for this?

Re: Can a PIPE input be FLUSHED?

#96

Author: H. Peter Anvin
Date: Thu, 06 Aug 1998 00:00

25 lines
1898 bytes

Followup to:  <35C8C4A1.93FCECDC@dvsystems.com>
By author:    Rod Tolosa <rod@dvsystems.com>
In newsgroup: comp.os.linux.development.system
> 
 > I'm reading from a pipe file that I created using mknod -p.
 > 
 > What I'd like to do is when I open up the file or at certain
 > times, be able to FLUSH any input on this pipe.
 > 
 > I checked ioctl calls, socket calls, include files, and the pipe.c
 > source code. I could not find anything.
 > 
 > Does anyone know what command I can use for this?
 >

 open() it with O_NONBLOCK set and keep reading until you get EAGAIN.
 Then the pipe is empty.

	-hpa

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