On 10.2.2014 21:10, Bruce Dubbs wrote: > Armin K. wrote: >> On 02/10/2014 02:50 PM, Igor Živković wrote: > >> The actual problem is logind, which can't be run without systemd since >> version 205+ due to change in cgroups handling, and that's rather a >> kernel requirement, not really enforced by systemd. >> >> The bigger problem than that is that there's no good replacement for >> logind at the moment. ConsoleKit is dead, insecure and doesn't have >> everything that people require nowadays. >> >>> * Setting up for API lock-in (having the DBus interfaces provided by >>> systemd become a necessary API that user-level programs depend on). >> >> Using D-Bus API's instead of C/C++ API's makes the code more portable. >> Several different projects can export same D-Bus API's and you can use >> them without the need to port over. Rare case, but it's possible (see >> notification daemon or policykit agent interfaces - same interfaces >> exported by several different packages). >> >> systemd also provides C API's so it's just systemd that really requires >> D-Bus now and will require kdbus later. > > Why does systemd need D-Bus? Because they pulled in login? That's > seems to be a circular argument to me. > > If you are creating a server with Apache, php, and mariadb or mysql, > where the only access is via a web browser or ssh, why do you need D-Bus > at all? > > As an example, anduin has been up 399 days and does not use D-Bus at > all. Here is the entire list of unique running processes: > > anvil > /bin/sh /usr/bin/mysqld_safe > klogd > pickup -l -t fifo -u > qmgr -l -t fifo -u > /sbin/agetty tty1 9600 > /sbin/udevd --daemon > smtpd > syslogd > /usr/bin/python /srv/mailman/bin/mailmanctl > /usr/bin/python /srv/mailman/bin/qrunner > /usr/bin/rsync --daemon > /usr/lib/postfix/master > /usr/lib/sa/sadc > /usr/sbin/fcron > /usr/sbin/httpd > /usr/sbin/mysqld > /usr/sbin/ntpd > /usr/sbin/sshd > /usr/sbin/vsftpd > > What advantages would systemd give? I can tell you the disadvantages: > less control of what is running. > > -- Bruce >
D-Bus is an IPC and such thing is needed to communicate between processes. systemd has lot of utilities and such that need to communicate with pid 1 (/sbin/init) and other components such as journald, logind, what not. -- http://linuxfromscratch.org/mailman/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
