Messages in this thread | | | Date | Tue, 29 Dec 2009 16:00:35 -0500 | Subject | Re: what's the purpose of MAXHOSTNAMELEN? | From | Vikram Dhillon <> |
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I care about Hurd :D, but yah as it is mentioned before, would it sometime in future be possible to remove this from the kernel ?
Regards, Vikram Dhillon
~~~ There are lots of Linux users who don't care how the kernel works, but only want to use it. That is a tribute to how good Linux is. -- Linus Torvalds
On Tue, Dec 29, 2009 at 3:20 PM, Jeff Garzik <jeff@garzik.org> wrote: > On 12/29/2009 02:56 PM, Samuel Thibault wrote: >> >> Jeff Garzik, le Tue 29 Dec 2009 14:40:05 -0500, a écrit : >>> >>> On 12/29/2009 02:19 PM, Robert P. J. Day wrote: >>>> >>>> arch/s390/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max >>>> length of hostname */ >>>> >>>> so lots of people define it but no one uses it. it *is* exported to >>>> user space in /usr/include/asm/param.h, but i still have no idea what >>>> it's for in user space. obsolete? >>> >>> According to RFC 1034, "Each node has a label, which is zero to 63 >>> octets in length" >> >> That's for Internet networks. Other kinds of networks could implement >> more. It could make sense to restrict ourself to Internet standards, >> but we don't :) > > Er huh? That was a description of the origin of the limit. > > And as a point of fact, we do restrict ourself to that: > > #define __NEW_UTS_LEN 64 > > struct new_utsname { > char sysname[__NEW_UTS_LEN + 1]; > char nodename[__NEW_UTS_LEN + 1]; > > > >>> What is it used for in userspace, and why is it export from the kernel? >> >> Gethostname, typically, but also all kinds of functions that provide a >> hostname. It's also quite often completely badly used, for instance for >> getnameinfo()... >> >> You have Debian's list on >> http://unstable.buildd.net/buildd/hurd-i386_Failed.html > > No one cares about Hurd. > > Jeff > > > > > -- > 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/ > -- 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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