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Revision 1.7, Tue Dec 4 22:09:01 2007 UTC (16 years, 4 months ago) by mjf
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, mjf-devfs2-base2, mjf-devfs2-base, mjf-devfs2, mjf-devfs-base, matt-premerge-20091211, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-premerge-20101231, matt-mips64-base2, matt-armv6-nbase, matt-armv6-base, khorben-n900, keiichi-mipv6-base, keiichi-mipv6, jym-xensuspend-nbase, jym-xensuspend-base, jym-xensuspend, hpcarm-cleanup-nbase, hpcarm-cleanup-base, cube-autoconf-base, cube-autoconf, cherry-xenmp-base, cherry-xenmp, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2, agc-symver-base, agc-symver
Branch point for: mjf-devfs
Changes since 1.6: +3 -3 lines 

Implement a new magic string for magic symlinks, @ruid, which exapnds to the
real user id of the process and use this magic string for per-user tmp.
This should fix PR/35687

Kernel parts reviewed by wrstuden@

#!/bin/sh
#
# $NetBSD: perusertmp,v 1.7 2007/12/04 22:09:01 mjf Exp $
#

# PROVIDE: perusertmp
# REQUIRE: mountall
# BEFORE:  cleartmp

$_rc_subr_loaded . /etc/rc.subr

name="perusertmp"
rcvar="per_user_tmp"
start_cmd="perusertmp_start"
stop_cmd=":"

perusertmp_start()
{
	echo "Preparing per-user /tmp."

	# If /tmp is a mount point, we can't do anything.
	if [ -d "/tmp" ]; then
		local mount_point

		mount_point=$(cd /tmp && /bin/df . | /usr/bin/tail -1 | /usr/bin/awk '{print $6}')
		if [ "${mount_point}" = "/tmp" ]; then
			echo "WARNING: /tmp is mounted."
			exit 1
		fi
	fi

	# Enable magic symlinks.
	/sbin/sysctl -qw vfs.generic.magiclinks=1

	# Fixup real temporary directory.
	if [ ! -d ${per_user_tmp_dir} ]; then
		/bin/mkdir -p ${per_user_tmp_dir}
	fi
	/usr/sbin/chown root:wheel ${per_user_tmp_dir}
	/bin/chmod 0555 ${per_user_tmp_dir}

	# Create magic link for /tmp.
	if [ "$(/usr/bin/readlink /tmp)" != ${per_user_tmp_dir}/@ruid ]; then
		/bin/rm -rf /tmp
		/bin/ln -s ${per_user_tmp_dir}/@ruid /tmp
	fi
}

load_rc_config $name
run_rc_command "$1"