openSUSE Packaging

Download

packaging@lists.opensuse.org

September 2006

14 participants
11 discussions

[opensuse-packaging] triggerd: idea how to get rid many SuSEconfig scripts and simplify scriptlets
by Stanislav Brabec 04 Sep '06

04 Sep '06

Hallo. I have been thinking about getting rid many of SuSEconfig scripts and making scriptlets more effective (call them once per transaction instead of four times per package). Because modification of RPM seems to be not acceptable, I tried to find a solution, which will work with unmodified RPM: Create a new daemon, running by default: triggerd triggerd can be an inotify based software and will have a configuration in /etc/trigger.d/. Each file there will contain a list of paths. If anything in specified path will change, script with the same name will be started with arguments saying, which directory (and maybe which file) have been changed. Specified path can be file, directory or recursive directory search. There will be a special flag (file), which will block/postpone the script calling. Paths: /etc/trigger.d/*: Configuration files. /usr/lib/trigger/*: Trigger scripts. /var/lib/triggerd/postpone/*: Postpone flags. Postpone calling of scripts until file here disappears. This daemon can obsolete many SuSEconfig scripts and even make scriptlets run faster - for example ldconfig: /etc/trigger.d/ldconfig: Symlink to /etc/ld.co.conf /usr/lib/trigger/ldconfig: Probably symlink to /sbin/ldconfig %pre touch var/lib/triggerd/postpone/ldconfig %preun touch var/lib/triggerd/postpone/ldconfig %posttrans if !.....zypp_is_running... ; then rm var/lib/triggerd/postpone/ldconfig fi In zypp: After completing of "transaction": rm var/lib/triggerd/postpone/ldconfig Transaction stuff in zypp / yast is not yet connected with RPM, so this is a work-around. RPM %posttrans will detect, that YaST/zypp is running, and will not delete postpone flag. zypp will delete it, when it will reach end of the "transaction" (i. e. if PreReq of next package has to be resolved or package list is complete). This implementation can replace all ocurrences of ldconfig except calls in "self prerequiring" scriptlets - scriptlets, which require working binaries from the same package. -- Best Regards / S pozdravem, Stanislav Brabec software developer --------------------------------------------------------------------- SUSE LINUX, s. r. o. e-mail: sbrabec(a)suse.cz Lihovarská 1060/12 tel: +420 284 028 966 190 00 Praha 9 fax: +420 284 028 951 Czech Republic http://www.suse.cz/ --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse-packaging+unsubscribe(a)opensuse.org For additional commands, e-mail: opensuse-packaging+help(a)opensuse.org

4 4