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SubjectRe: Sysctl syscall
Andi Kleen wrote:
> Hasso Tepper <> 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.


Hasso Tepper
Elion Enterprises Ltd. [AS3249]
Data Communication Network Administrator
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