xdasd_unix.c File Reference

OpenXDAS Unix console/daemon functionality. More...

#include "xdasd_main.h"
#include "xdasd_log.h"
#include "xdasd_cmdline.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <unistd.h>

Go to the source code of this file.

Functions
static int	xdasd_check_pid (const char *pidfile)
	Check a pid file to see if xdasd is already running.
static int	xdasd_write_pid (const char *pidfile, pid_t pid)
	Write a pid file.
static int	xdasd_daemonize (void)
	Convert this process to a console-detached daemon.
static void	xdasd_signal_handler (int signum)
	Handles all registered signals from the system.
static int	xdasd_setup_signal_handler (void)
	Configures signal handlers for the process.
int	main (int argc, char **argv)
	The main program entry point.

---

Detailed Description

OpenXDAS Unix console/daemon functionality.

Author:

John Calcote (jcalcote@novell.com)

Attention:

Please submit patches to http://openxdas.sourceforge.net

Definition in file xdasd_unix.c.

---

Function Documentation

int main	(	int	argc,
		char **	argv
	)

The main program entry point.

Parameters:

[in]	argc	- the number of arguments in argv.
[in]	argv	- an array of argument string pointers.

Returns:

Zero on success or non-zero on failure.

For internal use only.

Definition at line 197 of file xdasd_unix.c.

References XDASCmdLine_tag::detach, XDASCmdLine_tag::runpath, xdasd_check_pid(), xdasd_daemonize(), xdasd_fatal(), xdasd_main_init(), xdasd_main_run(), xdasd_parse_cmdline(), XDASD_PIDFNAME, xdasd_setup_signal_handler(), and xdasd_write_pid().

static int xdasd_check_pid

(

const char *

pidfile

)

[static]

Check a pid file to see if xdasd is already running.

The pid file contains the PID of the process that is already running.

Parameters:

[in]

pidfile

- the name of a file to read.

Returns:

Zero on success or a non-zero value with errno set on failure.

For internal use only.

Definition at line 66 of file xdasd_unix.c.

Referenced by main().

static int xdasd_daemonize

(

void

)

[static]

Convert this process to a console-detached daemon.

Turn the calling process into a daemon (detach from tty setuid(), etc).

Returns:

Zero on success, or a non-zero value if xdasd could not daemonize (or if xdasd is already running).

For internal use only.

Definition at line 114 of file xdasd_unix.c.

Referenced by main().

static int xdasd_setup_signal_handler

(

void

)

[static]

Configures signal handlers for the process.

Configures the process to receive SIGALRM, SIGTERM, SIGHUP, SIGPIPE.

Returns:

Zero on success, or a non-zero value on failure.

For internal use only.

Definition at line 166 of file xdasd_unix.c.

References xdasd_signal_handler().

Referenced by main().

static void xdasd_signal_handler

(

int

signum

)

[static]

Handles all registered signals from the system.

Get in, get out - fast.

Parameters:

[in]

signum

- the signal number to handle.

For internal use only.

Definition at line 148 of file xdasd_unix.c.

References xdasd_set_signal(), XDASD_SIGALRM, XDASD_SIGHUP, and XDASD_SIGTERM.

Referenced by xdasd_setup_signal_handler().

static int xdasd_write_pid	(	const char *	pidfile,
		pid_t	pid
	)			[static]

Write a pid file.

Parameters:

[in]	pidfile	- the name of the file to write.
[in]	pid	- the PID value to write to pidfile.

Returns:

Zero on success, or -1 with errno set on failure.

For internal use only.

Definition at line 93 of file xdasd_unix.c.

Referenced by main().