OpenSolaris Launch

1 files changed, 146 insertions, 0 deletions

diff --git a/usr/src/cmd/initpkg/swapadd.sh b/usr/src/cmd/initpkg/swapadd.sh
new file mode 100644
index 0000000000..f1bbe14602
--- /dev/null
+++ b/usr/src/cmd/initpkg/swapadd.sh
@@ -0,0 +1,146 @@
+#!/sbin/sh
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License, Version 1.0 only
+# (the "License").  You may not use this file except in compliance
+# with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+#
+# Copyright (c) 1991, 1998-1999 by Sun Microsystems, Inc.
+# All rights reserved.
+#
+# Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
+# All rights reserved.
+#
+#
+#ident	"%Z%%M%	%I%	%E% SMI"
+
+PATH=/usr/sbin:/usr/bin; export PATH
+USAGE="Usage: swapadd [-12] [file_system_table]"
+
+VFSTAB=/etc/vfstab	# Default file system table
+PASS=2			# Default to checking for existing swap
+
+#
+# Check to see if there is an entry in the fstab for a specified file and
+# mount it.  This allows swap files (e.g. nfs files) to be mounted before
+# being added for swap.
+#
+checkmount()
+{
+	while read rspecial rfsckdev rmountp rfstype rfsckpass rautomnt rmntopts
+	do
+		#
+		# Ignore comments, empty lines, and no-action lines
+		#
+		case "$rspecial" in
+		'#'* | '' | '-') continue ;;
+		esac
+
+		if [ "x$rmountp" = "x$1" ]; then
+			#
+			# If mount options are '-', default to 'rw'
+			#
+			[ "x$rmntopts" = x- ] && rmntopts=rw
+
+			if /sbin/mount -m -o $rmntopts $rspecial \
+			    >/dev/null 2>&1; then
+				echo "Mounting $rmountp for swap"
+			else
+				echo "Mount of $rmountp for swap failed"
+			fi
+			return
+		fi
+	done <$VFSTAB
+}
+
+die()
+{
+	echo "$*" >& 2
+	exit 1
+}
+
+while getopts 12 opt; do
+	case "$opt" in
+	1|2) PASS=$opt ;;
+	 \?) die "$USAGE" ;;
+	esac
+done
+shift `expr $OPTIND - 1`
+
+[ $# -gt 1 ] && die "$USAGE"
+[ $# -gt 0 ] && VFSTAB="$1"
+
+#
+# If $VFSTAB is not "-" (stdin), re-open stdin as the specified file
+#
+if [ "x$VFSTAB" != x- ]; then
+	[ -s "$VFSTAB" ] || die "swapadd: file system table ($VFSTAB) not found"
+	exec <$VFSTAB
+fi
+
+#
+# Read the file system table to find entries of file system type "swap".
+# Add the swap device or file specified in the first column.
+#
+while read special t1 t2 fstype t3 t4 t5; do
+	#
+	# Ignore comments, empty lines, and no-action lines
+	#
+	case "$special" in
+	'#'* | '' | '-') continue ;;
+	esac
+
+	#
+	# Ignore non-swap fstypes
+	#
+	[ "$fstype" != swap ] && continue
+
+	if [ $PASS = 1 ]; then
+		#
+		# Pass 1 should handle adding the swap files that
+		# are accessable immediately; block devices, files
+		# in / and /usr, and direct nfs mounted files.
+		#
+		if [ ! -b $special ]; then
+			#
+			# Read the file system table searching for mountpoints
+			# matching the swap file about to be added.
+			#
+			# NB: This won't work correctly if the file to added
+			# for swapping is a sub-directory of the mountpoint.
+			# e.g.	swapfile-> servername:/export/swap/clientname
+			# 	mountpoint-> servername:/export/swap
+			#
+			checkmount $special
+		fi
+		if [ -f $special -a -w $special -o -b $special ]; then
+			swap -$PASS -a $special >/dev/null
+		fi
+	else
+		#
+		# Pass 2 should skip all the swap already added.  If something
+		# added earlier uses the same name as something to be added
+		# later, the following test won't work. This should only happen
+		# if parts of a particular swap file are added or deleted by
+		# hand between invocations.
+		#
+		swap -l 2>/dev/null | grep '\<'${special}'\>' >/dev/null 2>&1 \
+		    || swap -$PASS -a $special >/dev/null
+	fi
+done