From 6950e496815f69df7b50f4664b654ac6b3e4f7de Mon Sep 17 00:00:00 2001
From: John Bowler <jbowler@nslu2-linux.org>
Date: Mon, 30 May 2005 06:12:33 +0000
Subject: Initscripts patch. This changes the order of the shutdown scripts in
 openslug to ensure that the network shutdown does not happen before network
 file systems have been unmounted. It also adds some missing scripts -
 hwclock.sh (load/save the hwclock, otherwise it gets loaded but not saved, in
 the absence of NTP).  alignment.sh (added to openslug, was in 'arm' before),
 and umountfs (excluded from oe). The file system unmount scripts use
 /proc/mounts (not fstab) and unmount in the correct order (the old scripts
 only worked if nothing was mounted within a mounted file system). Scripts
 have been patched (openslug only patches) to make them work correctly with
 openslug NFS, flash and disk root and to arrange for syslog to run as long as
 possible (it's now in S/0/6, not in the user run levels). Directory struction
 of openslug-init has been tidied up, with all the initscripts in a
 sub-dirctory. initscritps-openslug is an openslug specific variant of
 initscripts which tracks it and fails safe (an update/change to initscripts
 will cause initscripts-openslug to fail rather than build strangeness).
 turnup also contains a fix for slugbug 150.

BKrev: 429aaed1D-1XOdk8brF2bP9C9EEEJQ
---
 packages/openslug-init/openslug-init-0.10/turnup | 152 +++++++++++++++++++----
 1 file changed, 129 insertions(+), 23 deletions(-)

(limited to 'packages/openslug-init/openslug-init-0.10/turnup')

diff --git a/packages/openslug-init/openslug-init-0.10/turnup b/packages/openslug-init/openslug-init-0.10/turnup
index b688bc3051..d22e15c208 100644
--- a/packages/openslug-init/openslug-init-0.10/turnup
+++ b/packages/openslug-init/openslug-init-0.10/turnup
@@ -8,6 +8,55 @@
 # force: override certain checks
 force=
 #
+# fstype new
+#  The type of the file system mounted on "new"  Outputs the last
+#  piece of information found, which should be the one for the
+#  currently visible mount!
+fstype() {
+	local cwd dev mp type options pass freq result
+	cwd="$(cd "$1"; /bin/pwd)"
+	result=
+	while read dev mp type options pass freq
+	do
+		case "$mp" in
+		"$cwd")	result="$type";;
+		esac
+	done </proc/mounts
+	echo "$result"
+}
+#
+# fsoptions arguments
+#  Collapses the mount (-o) options into a single list which is
+#  printed on stdout.  Accepts an arbitrary list of options and
+#  just joins them together.
+fsoptions() {
+	local options
+	options=
+	while test $# -gt 1
+	do
+		case "$1" in
+		-t)	shift;;
+		-o)	if test -n "$2"
+			then
+				if test -n "$options"
+				then
+					options="$options,$2"
+				else
+					options="$2"
+				fi
+			fi
+			shift;;
+		esac
+		shift
+	done
+	if test -n "$options"
+	then
+		echo "$options"
+	else
+		echo defaults
+	fi
+}
+#
 # check_rootfs [-i] <root fs directory>
 #  Make sure the candidate rootfs is empty
 check_rootfs() {
@@ -87,8 +136,8 @@ setup_dev() {
 		return 1
 	}
 	echo "done" >&2
-	# now remove the startup links which mount the ramfs on /dev
-	rm "$1"/etc/rc?.d/[KS]??devices
+	# now prevent this being done each time
+	:>"$1"/dev/.permanent
 	return 0
 }
 
@@ -128,8 +177,8 @@ setup_var() {
 		echo "turnup: /var: could not populate directory" >&2
 		return 1
 	}
-	# and remove the startup links
-	rm "$1"/etc/rc?.d/[KS]??populate-var.sh
+	# the startup link is left for the moment, this seems safer
+	#rm "$1"/etc/rc?.d/[KS]??populate-var.sh
 	# remove the /var tmpfs entry from the new /etc/fstab
 	case "$2" in
 	disk)	sed -i '\@\s/var\s\s*tmpfs\s@d' "$1"/etc/fstab
@@ -138,10 +187,9 @@ setup_var() {
 		echo "turnup: tmpfs /var mount moved to /var/tmp" >&2;;
 	esac
 	#
-	# warn the user - it's not enough to put the /var mount back, it
-	# is necessary to reinsert the populate-var.sh links!
-	echo " If you remount tmpfs on /var it must be populated at boot, use:" >&2
-	echo "        update-rc.d populate-var.sh start 37 S ." >&2
+	# Previous versions of turnup removed populate-var.sh from the
+	# startup links, this one doesn't, so /var can be made back into
+	# a tmpfs just by a change to /etc/fstab.
 	return 0
 }
 
@@ -224,6 +272,23 @@ setup_rootfs() {
 	# return code of last setup function
 }
 
+#
+# setup_fstab new fsdev fstype fsoptions
+#  Alters the /etc/fstab entry for / to refer to the correct device and
+#  have the correct type and options.  Essential for checkroot to remount
+#  / with the correct options.
+#  bad, since sed won't fail even if it changes nothing.
+setup_fstab() {
+	sed -i '\@^[^ 	]*\s\s*/\s@s@^.*$@'"$2	/	$3	$4	1  1"'@' "$1"/etc/fstab
+	egrep -q "^$2	/	$3	$4	1  1\$" "$1"/etc/fstab || {
+		echo "turnup: /etc/fstab: root(/) entry not changed" >&2
+		echo "  you probably need to check the options in /etc/fstab" >&2
+		echo "  to ensure that the root partition is mounted correctly" >&2
+		return 1
+	}
+}
+
+
 #
 # boot_rootfs <boot type> <flash file system> <sleep time> <device> [options]
 #  Change the flash partition (not the current root!) to boot off
@@ -342,7 +407,7 @@ mountflash() {
 # disk [-m] [-i] [-s<time>] <device> {options}
 #  Carefully copy the flash file system to the named device.
 disk() {
-	local setup_type sleep init device new ffs
+	local setup_type sleep init device new ffs fst fso
 
 	setup_type=disk
 	sleep=0
@@ -388,7 +453,16 @@ disk() {
 	# read only is *not* an option, this is important because the boot/disk
 	# script needs a rw file system
 	status=1
+	fst=
+	fso="$(fsoptions "$@")"
 	if mount "$@" "$device" "$new"
+	then
+		fst="$(fstype "$new")"
+		umount "$new" ||
+			echo "turnup disk: $device($new): umount does not seem to work" >&2
+	fi
+
+	if test -n "$fst" && mount -t "$fst" -o "$fso" "$device" "$new"
 	then
 		if check_rootfs $init "$new" && {
 			test -z "$init" || {
@@ -397,14 +471,20 @@ disk() {
 			}
 		   }
 		then
+			setup_fstab "$new" "$device" "$fst" "$fso"
 			status=0
 		fi
 
 		# clean up the disk.  It is worrying if this umount fails!
-		umount "$new" || {
+		umount "$new" || test "$force" = "-f" || {
 			echo "turnup disk: $device: umount failed" >&2
 			echo "  you must unmount this device cleanly yourself, then use" >&2
-			echo "  the -i option to boot from the device" >&2
+			if test -z "$init"
+			then
+				echo "  turnup with the -f option to boot from the device" >&2
+			else
+				echo "  turnup without the -i option to boot from the device" >&2
+			fi
 			status=1
 		}
 
@@ -412,10 +492,15 @@ disk() {
 		if test $status -eq 0
 		then
 			# memsticks boot like disks, so ignore the -m
-			boot_rootfs disk "$ffs" "$sleep" "$device" "$@"
+			boot_rootfs disk "$ffs" "$sleep" "$device" -t "$fst" -o "$fso"
 		fi
 	else
 		echo "turnup disk: $device($*): unable to mount device on $new" >&2
+		# If it worked first time
+		if test -n "$fst"
+		then
+			echo "  options used: -t $fst -o $fso [error in this script]" >&2
+		fi
 	fi
 
 	# clean up the flash file system
@@ -501,7 +586,19 @@ nfs() {
 	# read only is *not* an option, this is important because the boot/disk
 	# script needs a rw file system
 	status=1
-	if mount -t nfs -o nolock,noatime,hard,intr,rsize=1024,wsize=1024,"$@" "$nfsroot" "$new"
+	fst=
+	# These settings for for NFS, something better will probably have to
+	# be done to support other network file systems.
+	nfsopt="nolock,noatime,hard,intr,rsize=1024,wsize=1024"
+	fso="$(fsoptions -o "$nfsopt" "$@")"
+	if mount -o "$nfsopt" "$@" "$nfsroot" "$new"
+	then
+		fst="$(fstype "$new")"
+		umount "$new" ||
+			echo "turnup nfs: $nfsroot($new): umount does not seem to work" >&2
+	fi
+
+	if test -n "$fst" && mount -t "$fst" -o "$fso" "$nfsroot" "$new"
 	then
 		if :>"$new"/ttt && test -O "$new"/ttt && rm "$new"/ttt
 		then
@@ -512,19 +609,25 @@ nfs() {
 				}
 			   }
 			then
+				setup_fstab "$new" "$nfsroot" "$fst" "$fso"
 				status=0
 			fi
 		else
-			echo "turnup nfs: $nfsroot: partition must be mounted no_root_squash" >&2
+			echo "turnup nfs: $nfsroot: partition must be exported no_root_squash" >&2
 		fi
 
 		# clean up the disk.  It is worrying if this umount fails!
-		umount "$new" || {
+		umount "$new" || test "$force" = "-f" || {
 			echo "turnup nfs: $nfsroot: umount failed" >&2
 			if test $status -eq 0
 			then
 				echo "  you must unmount this partition cleanly yourself, then use" >&2
-				echo "  the -i option to boot from the NFS root" >&2
+				if test -z "$init"
+				then
+					echo "  turnup with the -f option to boot from the NFS root" >&2
+				else
+					echo "  turnup without the -i option to boot from the NFS root" >&2
+				fi
 				status=1
 			fi
 		}
@@ -533,11 +636,15 @@ nfs() {
 		if test $status -eq 0
 		then
 			# the options used are exactly those which worked before.
-			boot_rootfs nfs "$ffs" 0 "$nfsroot" -t nfs \
-				-o nolock,noatime,hard,intr,rsize=1024,wsize=1024,"$@"
+			boot_rootfs nfs "$ffs" 0 "$nfsroot" -t nfs -o "$fso"
 		fi
 	else
-		echo "turnup disk: $nfsroot($*): unable to mount device on $new" >&2
+		echo "turnup nfs: $nfsroot($*): unable to mount device on $new" >&2
+		# If it worked first time
+		if test -n "$fst"
+		then
+			echo "  options obtained: -t $fst -o $fso" >&2
+		fi
 	fi
 
 	# clean up the flash file system
@@ -588,10 +695,9 @@ usage: turnup command [options]
     partition must be available to be mounted without root id
     sqashing (i.e. root must be root) and it will be selected
     as the root file system for subsequent reboots.
-    The options are added to the -o list, therefore to give
-    additional flag arguments specify an empty first option.
-    The options may be used to override the defaults just by
-    specifying the new value.
+    A default set of -o options are provided, additional options
+    may be given on the command line (multiple -o options will
+    be combined into a single -o).
   flash
     Revert to booting from the flash disk on next reboot.
   ram
-- 
cgit v1.2.3