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authorCsaba Henk <csaba@gluster.com>2009-08-26 21:17:22 +0400
committerMiklos Szeredi <mszeredi@suse.cz>2009-09-16 16:15:29 +0400
commit487ea5af6358cb27c994e2cf056d4ee0872e43c3 (patch)
tree26db6260934ad1743db6da6319cb7a502dd775e2 /fs/fuse/control.c
parentd6db07ded51c5fb4df2f4a32e6a41e9bb5db7fc4 (diff)
downloadlinux-487ea5af6358cb27c994e2cf056d4ee0872e43c3.tar.xz
fuse: limit user-specified values of max background requests
An untrusted user could DoS the system if s/he were allowed to accumulate an arbitrary number of pending background requests by setting the above limits to extremely high values in INIT. This patch excludes this possibility by imposing global upper limits on the possible values of per-mount "max background requests" and "congestion threshold" parameters for unprivileged FUSE filesystems. These global limits are implemented as module parameters. Signed-off-by: Csaba Henk <csaba@gluster.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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