Date: Tue, 16 Mar 2010 15:29:32 +0100 From: Milan Obuch <freebsd-virtualization@dino.sk> To: freebsd-virtualization@freebsd.org Subject: Re: shmget and vimage Message-ID: <201003161529.33273.freebsd-virtualization@dino.sk> In-Reply-To: <201003161455.43783.freebsd-virtualization@dino.sk> References: <201003161455.43783.freebsd-virtualization@dino.sk>
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On Tuesday 16 March 2010 14:55:43 Milan Obuch wrote: > Hi, > > some time ago I built a multi network monitor using older version with > Marko Zec's vimage patch. I am trying to port it to 8-STABLE (newer > features, easier maintenance...) with partial success. > > Basically, I use shared memory as common data area across more vimages in > order to be able to generate quick summaries from in-memory data. I was not > able to get it running under freshly compiler 8-STABLE, error message is > > shmget: Function not implemented > > Has anybody any idea? Patch to test to enable use of shared memory in vnet > jails? > > Regards, > Milan > Forget to add... In my code, I use if ((shmid = shmget(shmkey,sizeof(mdc),IPC_CREAT | 0640)) == -1) err(1,"shmget"); to create a shared segment and if ((shmid = shmget(shmkey,sizeof(mdc),0)) == -1) err(1,"shmget"); to get an id for already created segment. Both are failing under non-root vimage jail, but it works under main host. At first I thought shared memory is not yet virtualized, but ipcs display existing segments in both root/main host and vnet jail.ipcrm, however, works only in non-jailed host... ipcrm: shmid(131072): : Function not implemented Regards, Milan
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