init/initd/svclist.c

/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
 * Copyright (C) 2018 - David Oberhollenzer
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include "init.h"

static service_t *running = NULL;	/* currently supervised services */
static int singleshot = 0;		/* active singleshot services */

bool svclist_have_singleshot(void)
{
	return singleshot > 0;
}

void svclist_add(service_t *svc)
{
	svc->next = running;
	running = svc;

	if (svc->type == SVC_ONCE)
		singleshot += 1;
}

service_t *svclist_remove(pid_t pid)
{
	service_t *prev = NULL, *svc = running;

	while (svc != NULL) {
		if (svc->pid == pid) {
			if (prev != NULL) {
				prev->next = svc->next;
			} else {
				running = svc->next;
			}
			svc->next = NULL;

			if (svc->type == SVC_ONCE)
				singleshot -= 1;
			break;
		}

		prev = svc;
		svc = svc->next;
	}

	return svc;
}