ahDaemonize.C File Reference

Implementation of daemonization functionality. More...

#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <string.h>
#include <ah-signal.H>
#include <ah-errors.H>
#include <ahDaemonize.H>

Include dependency graph for ahDaemonize.C:

Go to the source code of this file.

Functions
void	daemonize (const char *program_name, int facility)
	Converts the calling process into a Unix daemon.

Detailed Description

Implementation of daemonization functionality.

Definition in file ahDaemonize.C.

Function Documentation

daemonize()

void daemonize	(	const char *	program_name,
		int	facility = LOG_DAEMON
	)

Converts the calling process into a Unix daemon.

Parameters

program_name	Name of the program (for syslog identification)
facility	The syslog facility to use (default: LOG_DAEMON)

Exceptions

std::runtime_error	if daemonization fails
std::invalid_argument	if program_name is null or empty

Note

Based on daemon_init from "The Unix Network Programming" by Richard Stevens

This function will:

• Fork and terminate the parent process
• Create a new session
• Change the working directory to root
• Clear the file mode creation mask
• Close all open file descriptors
• Redirect stdin, stdout, and stderr to /dev/null
• Initialize syslog logging

Warning

This function should be called early in program execution

After calling this function, the process will be running in the background

#include <ahDaemonize.H>
 
int main(int argc, char *argv[]) {
    try {
        daemonize("my_daemon", LOG_DAEMON);
        // Daemon code here
    } catch (const std::exception& e) {
        syslog(LOG_ERR, "Failed to daemonize: %s", e.what());
        return 1;
    }
    return 0;
}

Definition at line 78 of file ahDaemonize.C.

References ah_invalid_argument_if, ah_runtime_error_if, and Aleph::daemonized.