sys-boot/os-prober : shamelessly take all the patches from openSUSE Factory to make it work

1 files changed, 131 insertions, 0 deletions

diff --git a/sys-boot/os-prober/files/os-prober-btrfs-always-detect-default.patch b/sys-boot/os-prober/files/os-prober-btrfs-always-detect-default.patch
new file mode 100644
index 00000000..d8ebe56f
--- /dev/null
+++ b/sys-boot/os-prober/files/os-prober-btrfs-always-detect-default.patch
@@ -0,0 +1,131 @@
+Index: os-prober/linux-boot-prober
+===================================================================
+--- os-prober.orig/linux-boot-prober
++++ os-prober/linux-boot-prober
+@@ -67,7 +67,12 @@ if [ "$type" = btrfs ]; then
+ 	fi
+ 	if [ -z "$mpoint" ]; then
+ 		# mount the btrfs root
+-		if ! mount -o subvol=$subvol -t btrfs -U $UUID "$tmpmnt" 2>/dev/null; then
++
++		if [ -n "$subvol" ]; then
++			opts="-o subvol=$subvol"
++		fi
++
++		if ! mount $opts -t btrfs -U $UUID "$tmpmnt" 2>/dev/null; then
+ 			warn "error mounting btrfs subvol=$subvol UUID=$UUID"
+ 			umount "$tmpmnt/boot" 2>/dev/null
+ 			umount "$tmpmnt" 2>/dev/null
+Index: os-prober/os-probes/common/50mounted-tests
+===================================================================
+--- os-prober.orig/os-probes/common/50mounted-tests
++++ os-prober/os-probes/common/50mounted-tests
+@@ -114,6 +114,47 @@ if [ "$types" != "btrfs" ]; then
+ 	exit 1
+ fi
+ 
++probe_subvol ()
++{
++	local subvol=$1
++	local partition=$2
++	local UUID=$3
++	local tmpmnt=$4
++
++	mounted=
++	mpoint="$(grep btrfs /proc/self/mountinfo | grep "$partition " | grep "/$subvol " | cut -d ' ' -f 5)"
++	ret=1
++
++	if [ -n "$subvol" ]; then
++		opts="-o subvol=$subvol"
++	fi
++
++	if [ -n "$mpoint" ]; then
++		if [ "x$mpoint" = "x/" ]; then
++			continue # this is the root for the running system
++  		fi
++		mounted=1
++	else
++		# again, do not mount btrfs ro
++		mount -t btrfs $opts -U "$UUID" "$tmpmnt"
++		mpoint="$tmpmnt"
++	fi
++	test="/usr/lib/os-probes/mounted/90linux-distro"
++	if [ -f "$test" ] && [ -x "$test" ]; then
++		debug "running subtest $test"
++		if "$test" "$partition" "$mpoint" btrfs "UUID=$UUID" "subvol=$subvol"; then
++			debug "os found by subtest $test on subvol $subvol"
++			ret=0
++		fi
++	fi
++	if [ -z "$mounted" ]; then
++		if ! umount "$tmpmnt"; then
++			warn "failed to umount $tmpmnt"
++		fi
++	fi
++	return $ret
++}
++
+ # all btrfs processing here.  Handle both unmounted and
+ # mounted subvolumes.
+ if [ "$types" = btrfs ]; then
+@@ -136,45 +177,23 @@ if [ "$types" = btrfs ]; then
+             rmdir "$tmpmnt" || true
+             exit 1
+         fi
+-	if [ -z "$subvols" ]; then
+-		debug "no subvols found on btrfs volume $UUID"
+-		exit 1
+-	fi
++
+ 	found=
+-        for subvol in $subvols; do
+-		debug "begin btrfs processing for $UUID subvol=$subvol"
+-                if [ "$subvol" != "$defaultvol" ]; then
+-			if echo "$rosubvols" | grep -q -x "$subvol"; then
+-				continue
+-			fi
+-			if echo "$sssubvols" | grep -q -x "$subvol"; then
+-				continue
+-			fi
+-		fi
+-		mounted=
+-		mpoint="$(grep btrfs /proc/self/mountinfo | grep "$partition " | grep "/$subvol " | cut -d ' ' -f 5)"
+-		if [ -n "$mpoint" ]; then
+-			if [ "x$mpoint" = "x/" ]; then
+-				continue # this is the root for the running system
+-			fi
+-			mounted=1
+-		else
+-			# again, do not mount btrfs ro
+-			mount -t btrfs -o subvol="$subvol" -U "$UUID" "$tmpmnt"
+-			mpoint="$tmpmnt"
+-		fi
+-		test="/usr/lib/os-probes/mounted/90linux-distro"
+-		if [ -f "$test" ] && [ -x "$test" ]; then
+-			debug "running subtest $test"
+-			if "$test" "$partition" "$mpoint" btrfs "UUID=$UUID" "subvol=$subvol"; then
+-				debug "os found by subtest $test on subvol $subvol"
+-				found=1
+-			fi
++	# Always probe subvol or root set as default
++	if probe_subvol "$defaultvol" "$partition" "$UUID" "$tmpmnt"; then
++		found=1
++	fi
++
++	# Probe any other OS on subvol
++	for subvol in $subvols; do
++		if echo "$rosubvols" | grep -q -x "$subvol" ||
++		   echo "$sssubvols" | grep -q -x "$subvol" ||
++		   echo "$defaultvol" | grep -q -x "$subvol"; then
++			continue
+ 		fi
+-		if [ -z "$mounted" ]; then
+-			if ! umount "$tmpmnt"; then
+-			    warn "failed to umount $tmpmnt"
+-			fi
++		debug "begin btrfs processing for $UUID subvol=$subvol"
++		if probe_subvol "$subvol" "$partition" "$UUID" "$tmpmnt"; then
++			found=1
+ 		fi
+ 	done
+ 	rmdir "$tmpmnt" || true