Fix: couldn't run command su in existing ns with an active process.

usr/sbin/orjail

@@ -86,13 +86,18 @@ printvn() {
  VERBOSE=$OLDVERBOSE
 }
 
+# run a command as another user
+# Note: sudo and su syntax is slightly different and, more importantly, passing
+# su arguments with spaces needs escaping quotes and/or possibly spaces; YMMV.
+# Ex. orjail ls "/tmp/a\\ b" # systems with su but without sudo
 run () {
  if [ "$SUDOBIN" ]; then
  $SUDOBIN -u "$USERNAME" "$@"
  else
  su "$USERNAME" -c "$*"
  fi
 }
+
 # exec no output
 eno() {
  if [ "$VERBOSE" != y ]; then
@@ -240,7 +245,7 @@ if [ "$1" = "--inside" ]; then
  print G " * Executing..."
 
  run "$@"
- exit
+ exit $?
 fi
 
 # The tool
@@ -637,7 +642,12 @@ if [ $USEFIREJAIL = y ]; then
 else #or without
  if [ $NAMESPACE_EXIST = y ]; then
  pid=$(ip netns pids "$NAME" | tail -1)
- nsenter -p -n -i -m -t "$pid" "$SUDOBIN" -u "$USERNAME" "$@"
+ # This is like function run() - read comments there
+ if [ "$SUDOBIN" ]; then
+ nsenter -p -n -i -m -t "$pid" "$SUDOBIN" -u "$USERNAME" "$@"
+ else
+ nsenter -p -n -i -m -t "$pid" su "$USERNAME" -c "$*"
+ fi
  else
  ip netns exec "$NAME" \
  unshare --ipc --fork --pid --mount --mount-proc \