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authorEric W. Biederman <ebiederm@xmission.com>2006-12-08 02:39:55 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:29:03 -0800
commitcf9f151c7257683f489df85f94baf408d1d5694a (patch)
tree1b5db0f87d39bb7b83c86e0fb286a1f80f860922 /fs/inotify_user.c
parent6b1b60f41eef3ba7b188fd72f1d6de478aafd93c (diff)
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[PATCH] sysctl: simplify sysctl_uts_string
The binary interface to the namespace sysctls was never implemented resulting in some really weird things if you attempted to use sys_sysctl to read your hostname for example. This patch series simples the code a little and implements the binary sysctl interface. In testing this patch series I discovered that our 32bit compatibility for the binary sysctl interface is imperfect. In particular KERN_SHMMAX and KERN_SMMALL are size_t sized quantities and are returned as 8 bytes on to 32bit binaries using a x86_64 kernel. However this has existing for a long time so it is not a new regression with the namespace work. Gads the whole sysctl thing needs work before it stops being easy to shoot yourself in the foot. Looking forward a little bit we need a better way to handle sysctls and namespaces as our current technique will not work for the network namespace. I think something based on the current overlapping sysctl trees will work but the proc side needs to be redone before we can use it. This patch: Introduce get_uts() and put_uts() (used later) and remove most of the special cases for when UTS namespace is compiled in. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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