Re: /dev/shm

Shane Kerr wrote:

>On 2002-06-28 11:55:28 -0300, Alexandre P. Nunes wrote:
>  
>
>>I'm just new to ngpt. While trying ngpt-2.0.0, I figure out it
>>requires (well, programs fails to run without) /dev/shm mounted, which
>>I personally don't use. I've found quite a few programs which required
>>it, and patched them to don't do it. I personally don't think a low
>>level library, like ngpt, should.
>>    
>>
>
><snip/>
>
>I agree with this.  Using /dev/shm means that no chroot() application
>can use NGPT, e.g. Apache or BIND 9.  Solaris depends on /dev/mem for
>it's POSIX threads, and therefore doesn't support chroot() pthread apps,
>a limitation I'd hate to see added to Linux!
>
>  
>
One could use mount --bind /dev/shm /whatever, I personally think that's 
unclean even for only one chroot()ed environment, tough. Even worse for 
some people who have lots of it. mmaping() a file which is already 
backended in virtual memory is rather strange. Having /dev/shm as a 
requirement for anything is rather strange. IMHO, of course.


Cheers,

Alexandre