From: "Robert P. J. Day" <rpjday@crashcourse.ca>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: what's the purpose of MAXHOSTNAMELEN?
Date: Tue, 29 Dec 2009 14:19:30 -0500 (EST) [thread overview]
Message-ID: <alpine.LFD.2.00.0912291416230.4967@localhost> (raw)
in prepping for coalescing a lot of param.h files, i'm curious about
the purpose of this macro:
$ grep -rw MAXHOSTNAMELEN *
arch/s390/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/sparc/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/alpha/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/mn10300/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/arm/include/asm/param.h:#define MAXHOSTNAMELEN 64
arch/m32r/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/mips/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/m68k/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/xtensa/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/ia64/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/h8300/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/avr32/include/asm/param.h:#define MAXHOSTNAMELEN 64
arch/cris/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/um/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/powerpc/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/parisc/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
arch/frv/include/asm/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
include/asm-generic/param.h:#define MAXHOSTNAMELEN 64 /* max length of hostname */
include/net/sctp/structs.h:#include <asm/param.h> /* We get MAXHOSTNAMELEN. */
$
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?
rday
--
========================================================================
Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Kernel Pedantry.
Web page: http://crashcourse.ca
Twitter: http://twitter.com/rpjday
========================================================================
next reply other threads:[~2009-12-29 19:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-29 19:19 Robert P. J. Day [this message]
2009-12-29 19:28 ` what's the purpose of MAXHOSTNAMELEN? Samuel Thibault
2009-12-29 19:40 ` Jeff Garzik
2009-12-29 19:56 ` Samuel Thibault
2009-12-29 20:20 ` Jeff Garzik
2009-12-29 20:26 ` Samuel Thibault
2009-12-29 21:00 ` Vikram Dhillon
2009-12-29 20:13 ` Robert P. J. Day
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