Date: Thu, 19 Dec 1996 10:27:55 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: james@wgold.demon.co.uk (James Mansion) Cc: hackers@FreeBSD.ORG Subject: Re: mmap pain Message-ID: <199612182357.KAA01883@genesis.atrad.adelaide.edu.au> In-Reply-To: <32B7E11E.22@wgold.demon.co.uk> from James Mansion at "Dec 18, 96 12:18:38 pm"
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James Mansion stands accused of saying: > > Is there any (preferably generic) way to tell whether a file > has no (other) open descriptors attached to it and can be unlinked? Um, if you unlink it and someone else has it open, that's not going to hurt them; it'll disappear from the filesystem namespace (as intended), but will still exist until they close it or exit. It's actually quite common to mmap a file for parent/child communication, unlink it and then fork. > James -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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