Date: Fri, 5 Apr 1996 06:50:40 +0400 (MSD) From: =?KOI8-R?Q?=E1=CE=C4=D2=C5=CA_=FE=C5=D2=CE=CF=D7?= (aka Andrey A. Chernov, Black Mage) <ache@astral.msk.su> To: joerg_wunsch@uriah.heep.sax.de Cc: freebsd-current@FreeBSD.org Subject: Re: adjkerntz (was: cvs commit: src/usr.sbin/tzsetup ...) Message-ID: <199604050250.GAA00789@astral.msk.su> In-Reply-To: <199604040743.JAA19358@uriah.heep.sax.de> from "J Wunsch" at "Apr 4, 96 09:43:14 am"
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> As =?KOI8-R?Q?=E1=CE=C4=D2=C5=CA_=FE=C5=D2=CE=CF=D7?= wrote: > > > > msdosfs? MSDOS' idea of a timezone is broken by design (i.e., it > > > doesn't have an idea about it at all). Someone in Australia could > > > > It have an idea: local time zone. > > But that sucks when it comes to communication with other machines in > other timezones. Of course, it is one of well-known DOS/Win features. This problem usually solves into file-transfer programs (send timezone), or in the archivers (store files under UTC or add timezone offset to the archive). > Well, but that's a crock. Send a tar file over, and the contents of > the tar file will have invalid timestamps. Not to speak about IP > services like FTP, and the many possibilities to have timestamps > hidden somewhere in the archive files. Tar isn't DOS/Win archiver, so what you expect? Proper FTP software under DOS/Win must count timezone. > > msdosfs use adjkerntz kernel variable to calculate local timezone > > for DOS files, check msdosfs sources. > > That's a hack. Probably the best one you can do (and note that hacks > might often be useful, e.g. vfork() is another useful hack, or has at > least been one in times where COW wasn't available). What if i don't > use msdosfs but use mtools instead? (Like i do btw., whenever there's > an occasion to handle a DOS floppy. As you could guess, this is only I don't think it is hack. It is only way to handle Local Timezone FS'es. > rarely the case for me.) What if i use my own package to export/ > import DOS files? (Yes, i really wrote one as paywork years ago. It Your package must handle timezone in this case. > > Proper DOS/Windows software sends timezone offset of your DOS > > with any file times. > > How? There's no commonly agreed protocol. I cannot remember any DOS No, each software implement its own protocol. > installation program that would even ask for a timezone? Despite, you Win95 asks for timezone. DOS have TZ environment variable (all C implmentations handle it). -- Andrey A. Chernov : And I rest so composedly, /Now, in my bed, ache@astral.msk.su : That any beholder /Might fancy me dead - http://dt.demos.su/~ache : Might start at beholding me, /Thinking me dead. RELCOM Team,FreeBSD Team : E.A.Poe From "For Annie" 1849
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