Date: Thu, 23 Nov 2000 15:47:48 +0200 From: Peter Pentchev <roam@orbitel.bg> To: Konstantin Chuguev <Konstantin.Chuguev@dante.org.uk> Cc: Dmitry Sychov <accelware@accelware.com>, hackers@FreeBSD.ORG Subject: Re: dlopen() Message-ID: <20001123154748.C7746@ringworld.oblivion.bg> In-Reply-To: <3A1D1E52.95A9E626@dante.org.uk>; from Konstantin.Chuguev@dante.org.uk on Thu, Nov 23, 2000 at 01:40:34PM %2B0000 References: <001001c05552$45913f80$0e61bec3@dima> <3A1D1E52.95A9E626@dante.org.uk>
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On Thu, Nov 23, 2000 at 01:40:34PM +0000, Konstantin Chuguev wrote: > Dmitry Sychov wrote: > > > Greetings. > > > > Is it safe to remove the *.so file after it is loaded > > into the process space and addresses to its > > functions are gotten? > > It's safe to remove it as soon as it's been opened. > The file will still exist in the filesystem, only there won't be any > references to it from any directories, so you won't be able to open it > by its name. The file will be really removed from the file system when > you close your file descriptor. So the original poster's question is better translated as 'does the dynamic loader ever close and reopen a file after the initial loading, so it could accidentally open the new version of the library and use the old addresses'? I'd guess the answer is 'no' - the dynamic loader most probably opens the file once, and mmap()'s the needed functions; I might very well be wrong though. G'luck, Peter -- This sentence is false. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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