/proc/kmsg blocks with O_NONBLOCK, read() should return 0 with EAGAIN

[Graham Swallow]

/proc/kmsg  blocks with O_NONBLOCK, read() should return 0 with EAGAIN

	fd = open( "/proc/kmsg", O_RDONLY|O_NONBLOCK );
	...
	poll() -- says read it

	len = read(fd,buff,len); // first read is fine
	...
	len = read(fd,buff,len); // second read blocks

I call read() a second time, because I'm feeling lucky,
(this is library code, which also reads from sockets).

I expected it to return 0 with errno==EAGAIN.
Instead it waits:  do_syslog(2,buf,count); 

I'm not on this list, so please raise a ticket, linux-2.4.23,

   thanks
--
   Graham
   Information-Cascade (at) ntlworld.com
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