Date: Sun, 21 Jun 2020 22:02:00 +0000 From: Teran McKinney <sega01@go-beyond.org> To: Alfonso Siciliano <alfix86@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: An option to ignore sysctl CTLFLAG_ANYBODY Message-ID: <20200621220200.GA55789@daemon> In-Reply-To: <20200621045803.70a373337b6df186fabc54ac@gmail.com> References: <20200618172721.GA28529@daemon> <20200621045803.70a373337b6df186fabc54ac@gmail.com>
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On 2020-06-21 04-58-03 , Alfonso Siciliano wrote: > This new change to kern_sysctl.c should solve the problem: > > https://github.com/freebsd/freebsd/blob/master/sys/kern/kern_sysctl.c#L2122 > from > /* Is this sysctl writable by only privileged users? */ > if (req->newptr && !(oid->oid_kind & CTLFLAG_ANYBODY)) { > to > /* > * Is this sysctl writable? Does it belong to the undocumented interface > * or sysctlinfo? > */ > if (req->newptr && !(SYSCTL_CHILDREN(&sysctl___sysctl) == oid->oid_parent)) { > > > Testing > > % uname -K > 1300093 > % sysctl hw.ncpu > hw.ncpu: 1 > % nsysctl -NatGv hw.snd.default_unit > hw.snd.default_unit: integer: RD WR RW ANYBODY TUN RDTUN RWTUN NOFETCH: 0 > % sysctl hw.snd.default_unit > hw.snd.default_unit: 0 > % sysctl hw.snd.default_unit=1 > hw.snd.default_unit: 0 > sysctl: hw.snd.default_unit=1: Operation not permitted > > > Alfonso > > --- > Alfonso S. Siciliano > http://alfix.gitlab.io > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" Hi Alfonso, Your patch works perfectly. Thank you so much! I appreciate it. Sincerely, Teran
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