[JDEV] patch: jabberd-1.4 logfile rotation

[Ralph Siemsen]

A minor update for anyone who is using this patch... writing the logs in 
synchronous mode really slows things down... you just want the regular 
buffered stdout, and unbuffered stderr, so remove the O_SYNC from the 
open() call in this section of the patch:

> +
> +/* Redirect stdout/stderr to a logfile instead */
> +void redirect_logs(char *filename)
> +{
> +	/* Try to open the specified logfile for writing */
> +	int fd;
> +	fd = open(logfilename, O_WRONLY|O_CREAT|O_APPEND|O_SYNC, 0640);
> +	if (fd == -1) {
> +		printf("Fatal: could not open logfile %s\n", logfilename);
> +		exit(0);
> +	}
> +	/* Re-open the stdout/stderr streams on the logfile instead */
> +	dup2(fd, STDOUT_FILENO);
> +	dup2(fd, STDERR_FILENO);
> +	close(fd);
> +}