[Bug 236558] Re: sysctl: permission denied

[AceLan Kao]

dino99,

I think it does not a kernel bug or an issue. It just doesn't have the read permission for "sysctl" to read the data from it.
As you can see in the "/proc/sys" directory, not all the files are readable, some of them are only have write permission. That means you can't read any data from it and inside kernel source, it doesn't implement the read function for the file.

% ls -l /proc/sys/kernel/cad_pid /proc/sys/fs/binfmt_misc/register /proc/sys/net/ipv4/route/flush /proc/sys/net/ipv6/route/flush
--w------- 1 root root 0 2010-06-22 09:35 /proc/sys/fs/binfmt_misc/register
-rw------- 1 root root 0 2010-06-25 14:11 /proc/sys/kernel/cad_pid
--w------- 1 root root 0 2010-06-25 14:12 /proc/sys/net/ipv4/route/flush
--w------- 1 root root 0 2010-06-25 14:12 /proc/sys/net/ipv6/route/flush

So, I'm going to close this bug if you can accept my explanation.

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sysctl: permission denied
https://bugs.launchpad.net/bugs/236558
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