Date: Fri, 12 Jan 2001 10:02:23 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Jason Smethers <jsmethers@pdq.net> Cc: hackers@FreeBSD.org Subject: RE: Mutexs: checking for initialization Message-ID: <XFMail.010112100223.jhb@FreeBSD.org> In-Reply-To: <00a701c07c4c$61db61e0$edcf1f40@pdq.net>
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On 12-Jan-01 Jason Smethers wrote: > I've got some kernel code that passes untrusted data containing mutic. > I'd like to be able to check if the mutic have been initialized and > return an error if they haven't. As of now I don't see a standard way > of checking for initialization. I'd like to do it this way to abstract > out the way things are locked, and in FreeBSD's case the mutex's > description. > > I known I can do this other ways, but it'd be nice if there was a > standard way to check for this. Just a thought, or else I'd have a > diff =O. Umm, well, you could write a function that walked the all_mtx list and checked if the mutex was in that list. However, I think that you are using the wrong tool for your problem here. :) I'm not sure validating mutexes is the way to validate all the data you are receiving. > Thanks > - Jason -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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