From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <43E2CF02.7060008@surferz.net>
Date: Thu,  2 Feb 2006 22:33:22 -0500
From: Marina Brown <marina@surferz.net>
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To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Van Jacobsen's network stack restructure
References: <4f9b14f1f51c8780568bd394ad4c8918@quanstro.net>
	<20060203014226.GA979@cs.helsinki.fi>
In-Reply-To: <20060203014226.GA979@cs.helsinki.fi>
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Aki M Nyrhinen wrote:

>On Thu, Feb 02, 2006 at 05:43:49PM +0000, quanstro@quanstro.net wrote:
>  
>
>>On Thu Feb  2 11:57:10 CST 2006, forsyth@vitanuova.com wrote:
>>    
>>
>>>yes, i supposed it could be something along those lines but i didn't make my point clear.
>>>if it is along those lines, it breaks something that even sockets didn't break.
>>>at the moment, i get a file descriptor that i can pass to anything that does read and write.
>>>      
>>>
>>definately not true on linux. udp and netlink sockets would be a counter example.
>>    
>>
>
>sorry, are you claiming that the attached program (horror.c) does not
>work on (some) linux?
>
>  
>

Works on my ubantu linux box and a freebsd 5.2.1 box i have.

-- Marina Brown

>this is what in my understanding VJ's stuff would break.
>
>	Aki
>
>  
>
>------------------------------------------------------------------------
>
>
>#include <sys/socket.h>
>#include <netinet/in.h>
>#include <unistd.h>
>
>int
>main(void)
>{
>	int fd;
>	struct sockaddr_in sa;
>	sa.sin_family = AF_INET;
>	sa.sin_addr.s_addr = htonl(0x7F000001);
>	sa.sin_port = htons(5555);
>	switch(fork()){
>	case 0:
>		fd = socket(PF_INET, SOCK_DGRAM, 0);
>		bind(fd, (struct sockaddr*)&sa, sizeof sa);
>		dup2(fd, 0);
>		execl("/bin/cat", "cat", NULL);
>	default:
>		fd = socket(PF_INET, SOCK_DGRAM, 0);
>		connect(fd, (struct sockaddr*)&sa, sizeof sa);
>		dup2(fd, 1);
>		execl("/bin/cat", "cat", NULL);
>	}
>	return 0;
>}
>
>  
>