=== added file 'bin/ssh-slave'
--- bin/ssh-slave	1970-01-01 00:00:00 +0000
+++ bin/ssh-slave	2015-10-14 19:22:19 +0000
@@ -0,0 +1,78 @@
+#!/bin/zsh
+have_log=0
+die() {
+	(($#)) && print -r - "$*" >&2
+	for jnum jtext in ${(kv)jobtexts}; do
+		kill %$jnum
+	done
+	exit 1
+}
+
+noconnect=(
+	-o ControlMaster=no
+	-o PubkeyAuthentication=no
+	-o KbdInteractiveAuthentication=no
+	-o PasswordAuthentication=no
+)
+
+# prevent logging to syslog instead of stderr
+filtered=()
+for arg in "$@"; do
+	case $arg in
+		(--*) filtered+=$arg;;
+		(-o*) filtered+=$arg;;
+		(-y);;
+		(-*) filtered+=${arg/y/};;
+		(*) filtered+=$arg;;
+	esac
+done
+
+check="$( ssh -O check "$filtered[@]" 2>&1 )"
+if (($?)); then
+	for line in ${(f)check}; do
+		if [[ $line == 'Control socket connect('* ]]; then
+			master_path=${${check%)*}#*\(}
+		fi
+	done
+	[[ -z $master_path ]] && die 'could not determine master path'
+	[[ $master_path != */.ssh/master-* ]] && die master path $master_path failed sanity check
+	svdir=${master_path:h}/service
+	svname=${master_path:t}
+	s=$svdir/$svname
+	mkdir -p $s
+	print -r - 'args=(' ${(q)@} ')' >$s/args
+	if [[ -n $DISPLAY ]]; then
+		print -r export DISPLAY=${(q)DISPLAY}
+		print -r export SSH_ASKPASS=/usr/bin/x11-ssh-askpass
+	fi >> $s/args
+	touch $s/down
+	[[ -a $s/run ]] && rm $s/run
+	ln -s ${commands[sv.ssh-master.run]} $s/run
+	[[ -a $s/check ]] && rm $s/check
+	ln -s ${commands[sv.ssh-master.check]} $s/check
+	if [[ -o xtrace ]]; then
+		zsh -x ${commands[usv.bg]} $svdir || die
+	else
+		usv.bg $svdir || die
+	fi
+	while ! [[ -e $s/supervise/control ]]; do
+		sleep 0.1
+	done
+	have_log=0
+	if [[ -r /var/log/msg/current ]]; then
+		tail -F -n 0 /var/log/msg/current | grep ' ssh\[[0-9]\+\]: ' >&2 &
+		have_log=1
+	fi
+	printf o >$s/supervise/control || die
+	out=$(sv -w 15 check $s 2>&1$) || die $out
+	if (($have_log)); then
+		for jnum jtext in ${(kv)jobtexts}; do
+			kill %$jnum
+		done
+		wait
+	fi
+	if [[ "$(<$s/supervise/stat)" != run* ]];then
+		die 'could not start ssh master'
+	fi
+fi
+exec ssh $noconnect "$@"

=== added file 'bin/sv.ssh-master.check'
--- bin/sv.ssh-master.check	1970-01-01 00:00:00 +0000
+++ bin/sv.ssh-master.check	2014-02-14 02:27:12 +0000
@@ -0,0 +1,3 @@
+#!/bin/zsh
+source ./args
+ssh -O check "${args[@]}" &>/dev/null

=== added file 'bin/sv.ssh-master.run'
--- bin/sv.ssh-master.run	1970-01-01 00:00:00 +0000
+++ bin/sv.ssh-master.run	2014-02-14 02:27:12 +0000
@@ -0,0 +1,19 @@
+#!/bin/zsh
+
+autoload find_ssh_agent; find_ssh_agent
+source ./args
+
+# check for already running master or stale socket
+check="$( command ssh -O check "$args[@]" 2>&1 )"
+if (($?)); then
+	for line in ${(f)check}; do
+		if [[ $line == 'Control socket connect('* ]]; then
+			master_path=${${check%)*}#*\(}
+		fi
+	done
+	[[ -a $master_path ]] && rm $master_path
+else
+	command ssh -O exit "$args[@]"
+fi
+
+exec ssh -y -n -o LogLevel=VERBOSE -o ControlMaster=yes -N "${args[@]}"

=== added symlink 'ssh-slave'
=== target is u'bin/ssh-slave'
=== added symlink 'sv.ssh-master.check'
=== target is u'bin/sv.ssh-master.check'
=== added symlink 'sv.ssh-master.run'
=== target is u'bin/sv.ssh-master.run'