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- Xref: sparky comp.unix.programmer:4404 comp.unix.misc:3334
- Path: sparky!uunet!mcsun!ieunet!!bsullivn
- From: bsullivn@sc.sni.ie (Bryan O'Sullivan)
- Newsgroups: comp.unix.programmer,comp.unix.misc
- Subject: Re: Process & Signal Question
- Message-ID: <163@sc.sni.ie>
- Date: 18 Aug 92 09:42:15 GMT
- Article-I.D.: sc.163
- References: <Bt5tp0.9JI@gumby.ocs.com>
- Reply-To: bryan@sc.sni.ie
- Organization: Siemens-Nixdorf Software Development Centre, Dublin
- Lines: 22
- X-Newsreader: Tin 1.1 PL3
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-
-
- obi@gumby.ocs.com (Kuryan Obi Thomas) writes:
-
- : A vague memory tells me that on System V machines, demand-paged
- : executables which are in use (being executed) can't be overwritten. If you
- : could, horrid things would happen to the running process when it tried to
- : demand page from the executable. I believe the errno you get if you try to
- : open such an executable image for writing is ETXTBSY (Text File busy).
-
- : Could someone confirm or deny this?
-
- Our SVR4/386 boxen certainly allow a demand-paged executable to be
- overwritten when it's in use, thus causing the executing program to
- crash. This is very annoying, but it could be just a feature of the
- port of SVR4 we use.
-
- -- Bryan
-
- --
- Bryan O'Sullivan +353-1-767551 x225
- Siemens-Nixdorf Informationssysteme AG bryan@sc.sni.ie
- Software Development Centre "Theory like mist on eyeglasses.
- Dublin Obscure facts." -- Charlie Chan
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