C++ (Cpp) open_logfile_or_pipe示例

示例#1

文件： log.c 项目： ATCP/mtcp

int log_error_open(server *srv) {
#ifdef HAVE_SYSLOG_H
	/* perhaps someone wants to use syslog() */
	openlog("lighttpd", LOG_CONS | LOG_PID, LOG_DAEMON);
#endif

	srv->errorlog_mode = ERRORLOG_FD;
	srv->errorlog_fd = STDERR_FILENO;

	if (srv->srvconf.errorlog_use_syslog) {
		srv->errorlog_mode = ERRORLOG_SYSLOG;
	} else if (!buffer_is_empty(srv->srvconf.errorlog_file)) {
		const char *logfile = srv->srvconf.errorlog_file->ptr;

		if (-1 == (srv->errorlog_fd = open_logfile_or_pipe(srv, logfile))) {
			return -1;
		}
		srv->errorlog_mode = (logfile[0] == '|') ? ERRORLOG_PIPE : ERRORLOG_FILE;
	}

	log_error_write(srv, __FILE__, __LINE__, "s", "server started");

	if (srv->errorlog_mode == ERRORLOG_FD && !srv->srvconf.dont_daemonize) {
		/* We can only log to stderr in dont-daemonize mode;
		 * if we do daemonize and no errorlog file is specified, we log into /dev/null
		 */
		srv->errorlog_fd = -1;
	}

	if (!buffer_is_empty(srv->srvconf.breakagelog_file)) {
		int breakage_fd;
		const char *logfile = srv->srvconf.breakagelog_file->ptr;

		if (srv->errorlog_mode == ERRORLOG_FD) {
			srv->errorlog_fd = dup(STDERR_FILENO);
#ifdef FD_CLOEXEC
			fcntl(srv->errorlog_fd, F_SETFD, FD_CLOEXEC);
#endif
		}

		if (-1 == (breakage_fd = open_logfile_or_pipe(srv, logfile))) {
			return -1;
		}

		if (STDERR_FILENO != breakage_fd) {
			dup2(breakage_fd, STDERR_FILENO);
			close(breakage_fd);
		}
	} else if (!srv->srvconf.dont_daemonize) {
		/* move stderr to /dev/null */
		openDevNull(STDERR_FILENO);
	}
	return 0;
}

示例#2

文件： log.c 项目： glensc/lighttpd

int log_error_cycle(server *srv) {
	/* only cycle if the error log is a file */

	if (srv->errorlog_mode == ERRORLOG_FILE) {
		const char *logfile = srv->srvconf.errorlog_file->ptr;
		/* already check of opening time */

		int new_fd;

		if (-1 == (new_fd = open_logfile_or_pipe(srv, logfile))) {
			/* write to old log */
			log_error_write(srv, __FILE__, __LINE__, "SSSSS",
					"cycling errorlog '", logfile,
					"' failed: ", strerror(errno),
					", falling back to syslog()");

			close(srv->errorlog_fd);
			srv->errorlog_fd = -1;
#ifdef HAVE_SYSLOG_H
			srv->errorlog_mode = ERRORLOG_SYSLOG;
#endif
		} else {
			/* ok, new log is open, close the old one */
			close(srv->errorlog_fd);
			srv->errorlog_fd = new_fd;
			fd_close_on_exec(srv->errorlog_fd);
		}
	}

	return 0;
}

示例#3

文件： log.c 项目： presidentbeef/sqwee

int log_error_open(server *srv) {
	int close_stderr = 1;

#ifdef HAVE_SYSLOG_H
	/* perhaps someone wants to use syslog() */
	openlog("lighttpd", LOG_CONS | LOG_PID, LOG_DAEMON);
#endif
	srv->errorlog_mode = ERRORLOG_STDERR;

	if (srv->srvconf.errorlog_use_syslog) {
		srv->errorlog_mode = ERRORLOG_SYSLOG;
	} else if (!buffer_is_empty(srv->srvconf.errorlog_file)) {
		const char *logfile = srv->srvconf.errorlog_file->ptr;

		if (-1 == (srv->errorlog_fd = open_logfile_or_pipe(srv, logfile))) {
			return -1;
		}
		srv->errorlog_mode = (logfile[0] == '|') ? ERRORLOG_PIPE : ERRORLOG_FILE;
	}

	log_error_write(srv, __FILE__, __LINE__, "s", "server started");

#ifdef HAVE_VALGRIND_VALGRIND_H
	/* don't close stderr for debugging purposes if run in valgrind */
	if (RUNNING_ON_VALGRIND) close_stderr = 0;
#endif

	if (srv->errorlog_mode == ERRORLOG_STDERR && srv->srvconf.dont_daemonize) {
		/* We can only log to stderr in dont-daemonize mode;
		 * if we do daemonize and no errorlog file is specified, we log into /dev/null
		 */
		close_stderr = 0;
	}

	/* move stderr to /dev/null */
	if (close_stderr) openDevNull(STDERR_FILENO);
	return 0;
}