The following reply was made to PR kern/1781; it has been noted by GNATS.

From: Jason R Thorpe <thorpej@netbsd.org>
To: gnats-bugs@netbsd.org
Cc: 
Subject: PR/1781 CVS commit: src
Date: Thu, 23 Jun 2005 00:30:29 +0000 (UTC)

 Module Name:	src
 Committed By:	thorpej
 Date:		Thu Jun 23 00:30:29 UTC 2005
 
 Modified Files:
 	src/include: mntopts.h
 	src/lib/libc/sys: mount.2
 	src/sbin/mount: mount.8
 	src/share/man/man4: options.4
 	src/share/man/man7: symlink.7
 	src/sys/conf: files newvers.sh
 	src/sys/kern: init_main.c vfs_lookup.c vfs_syscalls.c
 	src/sys/sys: fstypes.h systm.h
 
 Log Message:
 Implement expansion of special "magic" strings in symlinks into
 system-specific values.  Submitted by Chris Demetriou in Nov 1995 (!)
 in PR kern/1781, modified only slighly by me.
 
 This is enabled on a per-mount basis with the MNT_MAGICLINKS mount
 flag.  It can be enabled at mountroot() time by building the kernel
 with the ROOTFS_MAGICLINKS option.
 
 The following magic strings are supported by the implementation:
 
 	@machine	value of MACHINE for the system
 	@machine_arch	value of MACHINE_ARCH for the system
 	@hostname	the system host name, as set with sethostname()
 	@domainname	the system domain name, as set with setdomainname()
 	@kernel_ident	the kernel config file name
 	@osrelease	the releaes number of the OS
 	@ostype		the name of the OS (always "NetBSD" for NetBSD)
 
 Example usage:
 
 	mkdir /arch/i386/bin
 	mkdir /arch/sparc/bin
 	ln -s /arch/@machine_arch/bin /bin
 
 
 To generate a diff of this commit:
 cvs rdiff -r1.5 -r1.6 src/include/mntopts.h
 cvs rdiff -r1.32 -r1.33 src/lib/libc/sys/mount.2
 cvs rdiff -r1.46 -r1.47 src/sbin/mount/mount.8
 cvs rdiff -r1.279 -r1.280 src/share/man/man4/options.4
 cvs rdiff -r1.6 -r1.7 src/share/man/man7/symlink.7
 cvs rdiff -r1.719 -r1.720 src/sys/conf/files
 cvs rdiff -r1.40 -r1.41 src/sys/conf/newvers.sh
 cvs rdiff -r1.247 -r1.248 src/sys/kern/init_main.c
 cvs rdiff -r1.60 -r1.61 src/sys/kern/vfs_lookup.c
 cvs rdiff -r1.222 -r1.223 src/sys/kern/vfs_syscalls.c
 cvs rdiff -r1.3 -r1.4 src/sys/sys/fstypes.h
 cvs rdiff -r1.178 -r1.179 src/sys/sys/systm.h
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.