Date: Wed, 20 Oct 2010 00:44:43 -0700 From: "Constantine A. Murenin" <mureninc@gmail.com> To: Alexander Best <arundel@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: addition of sysctl nodes after compile time Message-ID: <AANLkTikyC-mtMAnRrO5=3k=UVsF30n1wP6YLKxbTr78k@mail.gmail.com> In-Reply-To: <20101019233656.GA84316@freebsd.org> References: <20101019233656.GA84316@freebsd.org>
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On 19 October 2010 16:36, Alexander Best <arundel@freebsd.org> wrote: > hi there, > > i stumbled upon this note in the BUGS section of the cd(4) manual: > > =A0 =A0"There is no mechanism currently to set different minimum and maxi= mum > =A0 =A0 timeouts for different CD changers; the timeout values set by the= kernel > =A0 =A0 options or the sysctl variables apply to all LUN-based CD changer= s in the > =A0 =A0 system. =A0It is possible to implement such support, but the sysc= tl imple- > =A0 =A0 mentation at least would be rather inelegant, because of the curr= ent > =A0 =A0 inability of the sysctl code to handle the addition of nodes afte= r com- > =A0 =A0 pile time. =A0Thus, it would take one dynamically sized sysctl va= riable and > =A0 =A0 a userland utility to get/set the timeout values. =A0Implementati= on of sep- > =A0 =A0 arate timeouts for different CD devices in the kernel config file= would > =A0 =A0 likely require modification of config(8) to support the two timeo= uts when > =A0 =A0 hardwiring cd devices." > > does this limitation still exist? > > cheers. > alex No, the limitation is no longer present. See sysctl_add_oid(9) for more details. C.
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