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authorEric W. Biederman <ebiederm@xmission.com>2015-01-07 14:28:26 -0600
committerSimon Shields <keepcalm444@gmail.com>2016-06-30 18:21:22 +1000
commit2533a2b72074aefdbf2766857d06c39836d3e65e (patch)
treee2be78e995dfec159ab99f7af30b8ef99a60aef4 /net/ax25
parent53094f33e12e0564161fc7ebf38c222d9270e118 (diff)
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mnt: Fail collect_mounts when applied to unmounted mounts
The only users of collect_mounts are in audit_tree.c In audit_trim_trees and audit_add_tree_rule the path passed into collect_mounts is generated from kern_path passed an audit_tree pathname which is guaranteed to be an absolute path. In those cases collect_mounts is obviously intended to work on mounted paths and if a race results in paths that are unmounted when collect_mounts it is reasonable to fail early. The paths passed into audit_tag_tree don't have the absolute path check. But are used to play with fsnotify and otherwise interact with the audit_trees, so again operating only on mounted paths appears reasonable. Avoid having to worry about what happens when we try and audit unmounted filesystems by restricting collect_mounts to mounts that appear in the mount tree. Change-Id: I2edfee6d6951a2179ce8f53785b65ddb1eb95629 Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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