Date: Thu, 2 Nov 2000 17:11:53 -0600 From: "G. Adam Stanislav" <adam@whizkidtech.net> To: Dag-Erling Smorgrav <des@ofug.org> Cc: Michael Bacarella <mbac@mmap.nyct.net>, hackers@FreeBSD.ORG Subject: Re: Kernel calls, are they documented somewhere? Message-ID: <20001102171153.A228@whizkidtech.net> In-Reply-To: <xzp3dhasqax.fsf@flood.ping.uio.no>; from des@ofug.org on Thu, Nov 02, 2000 at 09:59:02AM %2B0100 References: <20001101222558.A408@whizkidtech.net> <20001102001202.A14447@mmap.nyct.net> <xzp3dhasqax.fsf@flood.ping.uio.no>
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On Thu, Nov 02, 2000 at 09:59:02AM +0100, Dag-Erling Smorgrav wrote: >Adam, it's really quite simple: if the carry flag is set, the syscall >failed, and the value returned is the errno (in your example, open(2) >returned 2, which is ENOENT, i.e. the file didn't exist). If it >succeeded, the value returned is the result (a file descriptor in >open(2)'s case). Aha! Thank you (and everyone else who answered). That did the trick. I just knew FreeBSD would use a simple and elegant solution, and this one is both. Thanks again! Adam -- Don't send me spam, I'm a vegetarian To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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