From ecd02e3b8aa47fc1b31bea4f170775ec5b44b08d Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Sun, 05 Oct 2014 09:28:16 -0400
Subject: session: Bind mount a dir to the session dir

---
diff --git a/lib/cmd/shell.sh b/lib/cmd/shell.sh
index 9f5b6ba..c2570e0 100644
--- a/lib/cmd/shell.sh
+++ b/lib/cmd/shell.sh
@@ -24,7 +24,7 @@ use session
 cmd_shell_main()
 {
 	local root=
-	local uname_s=
+	local session_dir=
 
 	if [ ${#} -lt 1 ]; then
 		print_cmd_usage 'shell' >&2
@@ -37,28 +37,14 @@ cmd_shell_main()
 	. "${root}/etc/os-release"
 	profile_set "${ID}"
 
-	uname_s="$( (uname -s) 2>/dev/null)" || uname_s='unknown'
-	mkdir -p "${root}/prokit/wd/${$}"
-	case "${uname_s}" in
-		'Linux')
-			mount -o bind . "${root}/prokit/wd/${$}"
-			;;
-	esac
-
-	session_begin "${root}" :
+	session_begin "${root}" . :
+	session_dir="/prokit/sessions/$(session_id)"
 	if [ ${#} -eq 0 ]; then
-		chroot "${root}" /bin/sh -c "cd '/prokit/wd/${$}'; /bin/sh"
+		chroot "${root}" /bin/sh -c "cd '${session_dir}'; /bin/sh"
 		printf '\n'
 		info "$(get_msg 'cmd_shell_exiting')"
 	else
-		chroot "${root}" /bin/sh -c "cd '/prokit/wd/${$}'; ${*}"
+		chroot "${root}" /bin/sh -c "cd '${session_dir}'; ${*}"
 	fi
 	session_end
-
-	case "${uname_s}" in
-		'Linux')
-			umount "${root}/prokit/wd/${$}"
-			;;
-	esac
-	rmdir "${root}/prokit/wd/${$}"
 }
diff --git a/lib/session.sh b/lib/session.sh
index 0d66eeb..e189277 100644
--- a/lib/session.sh
+++ b/lib/session.sh
@@ -31,18 +31,21 @@ session_id=
 session_root=
 session_arch=
 session_plat=
+session_mountdir=
 session_atexit=
 
 session_begin()
 {
 	local root="${1}"
-	local atexit="${2}"
+	local mountdir="${2}"
+	local atexit="${3}"
 
 	rand
 	session_id=${rand_x}
 	session_root="${root}"
 	session_arch="$(cat "${root}/etc/proteanos_arch")"
 	session_plat="$(cat "${root}/etc/proteanos_plat")"
+	session_mountdir="${mountdir}"
 	session_atexit="${atexit}"
 
 	if ! mutex_lock_timeout "${session_root}/prokit/sessions.lock" 5; then
@@ -68,6 +71,9 @@ session_begin()
 
 	# Register the session.
 	mkdir "${session_root}/prokit/sessions/${session_id}"
+	profile_bind_mount "${session_arch}" "${session_plat}" \
+		"${session_mountdir}" \
+		"${session_root}/prokit/sessions/${session_id}"
 
 	mutex_unlock "${session_root}/prokit/sessions.lock"
 }
@@ -75,6 +81,9 @@ session_begin()
 session_end()
 {
 	# Unregister the session.
+	profile_bind_umount "${session_arch}" "${session_plat}" \
+		"${session_mountdir}" \
+		"${session_root}/prokit/sessions/${session_id}"
 	rmdir "${session_root}/prokit/sessions/${session_id}"
 
 	if ! mutex_lock_timeout "${session_root}/prokit/sessions.lock" 5; then
--
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