linux-kernel - Re: Sysctl syscall

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 17 Nov 2006 10:07:57 +0200
From:	Hasso Tepper <hasso@...pak.ee>
To:	Andi Kleen <ak@...e.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Sysctl syscall

Andi Kleen wrote:
> Hasso Tepper <hasso@...pak.ee> writes:
> > 2.4 and 2.6 kernels and would work with capabilities
> > (sys/capability.h)? Accessing `/proc/sys' directly isn't such
> > alternative as it doesn't work with capabilities.
>
> What do you mean with "/proc/sys doesn't work with capabilities"?

I have process which drops root privileges after startup and retains only 
some privileges using CAP_NET_ADMIN and CAP_SYS_ADMIN capabilities.
I can change values in /proc/sys/net/ipv[46]/* (like turning forwarding 
on/off) from this process using sysctl syscall, but I can't write 
directly into /proc/sys/net/ipv[46]/* from it.


regards,
 
-- 
Hasso Tepper
Elion Enterprises Ltd. [AS3249]
Data Communication Network Administrator
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/