Remove stale pidfiles in the respawn loop

Signed-off-by: fbt <fbt@fleshless.org>

ssm

@@ -186,6 +186,14 @@ svc() {
 	while true; do
 		job_success = 0 # Needs to be reset
 
+		# Remove stale pidfiles some services may leave behind
+		# If a pidfile exists at this point in the code, it should be stale.
+		if service_pidfile_remove_stale; then
+			if ! svc_pidfile == "$service_pidfile"; then
+				service_pidfile is file && rm -f "$service_pidfile"
+			fi
+		fi
+
 		# Spawn the process and record the PID
 		spawn "$@" & job_pid = "$!"
 
@@ -369,6 +377,7 @@ start() {
 	service_running && return 3
 	service_command is file || return 9
 
+	# Preform cgroup checks
 	if cgroups; then
 		if service_cgroup_exclusive; then
 			service_cgroup_procs is empty || return 15
@@ -591,6 +600,7 @@ var service_cgroup_kill_signal = 15 # The signal to send to the stray cgroup mem
 var service_cgroup_cleanup = 0 # Clean up the cgroup when the main PID exits. Uses service_cgroup_kill_signal.
 var service_success_exit = 0 # Array, takes exit codes that are to be treated as successful termination.
 var service_pidfile_timeout = 15 # How long to wait for unmanaged services to create their pidfiles.
+var service_pidfile_remove_stale = 1 # Remove stale pidfiles from unmanaged services.
 
 # Global config
 var cgroups = 0 # Enable cgroup-related functions