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daemon-windows: Ability to handle windows service calls.

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The visioned workflow that this piece of code should work with is:
* Create a windows service through a startup script with
a tool like 'sc'
ex:  sc create ovsdb-server binpath=
 "C:\openvswitch\usr\sbin\ovsdb-server.exe -vconsole:off
-vsyslog:off -vfile:info --remote=ptcp:6632:127.0.0.1 --log-file
--service-monitor --service"

* Start the service from the startup script.
ex: sc start ovsdb-server

* Terminate the service during shutdown process.
ex: sc stop ovsdb-server

* Abrupt termination will restart the service.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Gurucharan Shetty
2014-01-16 16:16:24 -08:00
parent 80e448834d
commit fda546bd0b
8 changed files with 417 additions and 5 deletions
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46
lib/daemon.h
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@@ -21,6 +21,22 @@
#include <stdbool.h>
#include <sys/types.h>
/* This file provides an interface for utilities to run in the background
* as daemons on POSIX platforms like Linux or as services on Windows platform.
* Some of the functionalities defined in this file are only applicable to
* POSIX platforms and some are applicable only on Windows. As such, the
* function definitions unique to each platform are separated out with
* ifdef macros. More descriptive comments on individual functions are provided
* in daemon.c (for Linux) and daemon-windows.c (for Windows).
* The DAEMON_OPTION_ENUMS, DAEMON_LONG_OPTIONS and DAEMON_OPTION_HANDLERS
* macros are useful for parsing command-line options in individual utilities.
* For e.g., the command-line option "--detach" is recognized on Linux
* and results in calling the set_detach() function. The same option is not
* recognized on Windows platform.
*/
#ifndef _WIN32
#define DAEMON_OPTION_ENUMS \
OPT_DETACH, \
OPT_NO_CHDIR, \
@@ -56,17 +72,39 @@
daemon_set_monitor(); \
break;
void set_detach(void);
void daemon_set_monitor(void);
void set_pidfile(const char *name);
void set_no_chdir(void);
void set_detach(void);
void ignore_existing_pidfile(void);
pid_t read_pidfile(const char *name);
#else
#define DAEMON_OPTION_ENUMS \
OPT_SERVICE, \
OPT_SERVICE_MONITOR
#define DAEMON_LONG_OPTIONS \
{"service", no_argument, NULL, OPT_SERVICE}, \
{"service-monitor", no_argument, NULL, OPT_SERVICE_MONITOR}
#define DAEMON_OPTION_HANDLERS \
case OPT_SERVICE: \
break; \
\
case OPT_SERVICE_MONITOR: \
break;
void control_handler(DWORD request);
#endif /* _WIN32 */
bool get_detach(void);
void daemon_set_monitor(void);
void daemon_save_fd(int fd);
void daemonize(void);
void daemonize_start(void);
void daemonize_complete(void);
void ignore_existing_pidfile(void);
void daemon_usage(void);
pid_t read_pidfile(const char *name);
void service_start(int *argcp, char **argvp[]);
void service_stop(void);
bool should_service_stop(void);
#endif /* daemon.h */