On Tuesday 10 May 2005 02:18, Goswin von Brederlow <[EMAIL PROTECTED]> wrote: > Russell Coker <[EMAIL PROTECTED]> writes: > > It seems to me that /usr/libexec is a better name for such things, and > > having the same directory names used across distributions provides real > > benefits (copying config files and binaries from other distributions when > > a bug stops a server working and it's REALLY important to get it fixed > > fast). > > > > Should we change some of these to /usr/libexec? > > That would be /usr/libexec/arch-os/postfix vs /usr/lib/arch-os/postfix > then. > > If you consider any change then please include the multiarch changes > at the same time. No point doing 2 transitions for etch.
Why would it be desirable to have arch-os directories under libexec? By definition anything in libexec is a program that is a part of another program. In the case of Postfix there are many cooperating programs running with different privs (different UID and different SE Linux domain) that are used for different aspects of Postfix functionality. Why would you want one of those programs to be 32bit and another to be 64bit? Firstly there is little performance to be gained by running Postfix 64bit. Any performance issues that a Postfix server will experience will be related to disk IO (not a word size issue) or the speed of external programs such as virus scanners and Postgrey (which interoperate with Postfix via TCP sockets and have no inter-dependencies on word size etc). Secondly there is no benefit to using different word sizes for different parts of Postfix. I can't imagine any reason for using different word sizes. There is a possibility of having Postfix call external shared objects which may make some dependencies on word size. But if you have two shared objects one of which is 32bit and another 64bit then trying to get Postfix processes to use both will be a losing game. AFAIK there is no design documentation which precisely states which Postfix sub-process will use a given shared object. Finally no-one has tested Postfix for such things. I think that Postfix is very well written and should work even if you had parts of it being 64bit and parts being 32bit. But this is not tested or guaranteed. If there was a bug in this regard then it could have security implications, do you want to take the chance? -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/ Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
