Message-ID: <4563342B.9050500@zytor.com>
Date: Tue, 21 Nov 2006 09:15:23 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Michal Schmidt <xschmi00@stud.feec.vutbr.cz>
CC: Simon Richter <Simon.Richter@hogyros.de>, linux-kernel@vger.kernel.org
Subject: Re: RFC: implement daemon() in the kernel
References: <4561ABB4.6090700@hogyros.de> <45624A91.3010604@zytor.com> <4562C741.800@stud.feec.vutbr.cz>
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Michal Schmidt wrote:
> H. Peter Anvin wrote:
>> Simon Richter wrote:
>>> int daemon(int nochdir, int noclose)
>>> {
>>>     if(!nochdir)
>>>         chdir("/");
>>>
>>>     if(!noclose)
>>>     {
>>>         int fd = open("/dev/null", O_RDWR);
>>>         dup2(fd, 0);
>>>         dup2(fd, 1);
>>>         dup2(fd, 2);
>>>         close(fd);
>>>     }
>>>
>>>     if(fork() > 0)
>>
>> ... that should be if (fork() == 0) ...
> 
> Are you sure? fork()==0 means we're the child, but it's the parent who 
> should exit, isn't it?
> 

Oh, right, of course.  Thinko; the lack of error handling confused me. 
I did that right in the assembly code.

	-hpa
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