Messages in this thread | | | Date | Wed, 6 Oct 2004 07:43:05 +0100 | From | Russell King <> | Subject | Re: [PATCH] Console: fall back to /dev/null when no console is availlable |
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On Wed, Oct 06, 2004 at 12:36:21AM +0200, Andries Brouwer wrote: > On Tue, Oct 05, 2004 at 09:27:12PM +0100, Russell King wrote: > > There's a related problem. /sbin/hotplug. I keep seeing odd failures > > from /sbin/hotplug scripts which go away when I ensure that fd0,1,2 are > > directed at something real. > > Yes. In principle, user space must be able to handle the case > where no fds 0,1,2 are available. For example in mount.c: > > while((fd = open("/dev/null", O_RDWR)) == 0 || fd == 1) ; > if (fd > 2) > close(fd); > > or so.
That's all well and good in theory, but do you really think that every single userspace program handles this case correctly?
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/ 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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