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openvswitch/lib/daemon.h
Justin Pettit 91a1e24d09 daemon: Provide option to not chdir to root
By default, Open vSwitch daemons change their working directories to the
root directory.  This commit provides a --no-chdir option to prevent this
behavior.
2009-08-06 18:04:36 -07:00

63 lines
2.1 KiB
C

/*
* Copyright (c) 2008 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef DAEMON_H
#define DAEMON_H 1
#include <limits.h>
#include <stdbool.h>
#include <sys/types.h>
enum {
OPT_NO_CHDIR = UCHAR_MAX + 2048
};
#define DAEMON_LONG_OPTIONS \
{"detach", no_argument, 0, 'D'}, \
{"no-chdir", no_argument, 0, OPT_NO_CHDIR}, \
{"force", no_argument, 0, 'f'}, \
{"pidfile", optional_argument, 0, 'P'}
#define DAEMON_OPTION_HANDLERS \
case 'D': \
set_detach(); \
break; \
\
case OPT_NO_CHDIR: \
set_no_chdir(); \
break; \
\
case 'P': \
set_pidfile(optarg); \
break; \
\
case 'f': \
ignore_existing_pidfile(); \
break;
char *make_pidfile_name(const char *name);
void set_pidfile(const char *name);
const char *get_pidfile(void);
void set_no_chdir(void);
void set_detach(void);
void daemonize(void);
void die_if_already_running(void);
void ignore_existing_pidfile(void);
void daemon_usage(void);
pid_t read_pidfile(const char *name);
#endif /* daemon.h */