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authorEric W. Biederman <ebiederm@xmission.com>2012-12-27 22:27:29 -0800
committerEric W. Biederman <ebiederm@xmission.com>2013-01-26 22:12:04 -0800
commit0bd14b4fd72afd5df41e9fd59f356740f22fceba (patch)
treebf1bc8dfa507ca40970927efb2dd87b4f5bdd416 /init
parentc61a2810a2161986353705b44d9503e6bb079f4f (diff)
downloadvexpress-lsk-0bd14b4fd72afd5df41e9fd59f356740f22fceba.tar.gz
userns: Allow any uid or gid mappings that don't overlap.
When I initially wrote the code for /proc/<pid>/uid_map. I was lazy and avoided duplicate mappings by the simple expedient of ensuring the first number in a new extent was greater than any number in the previous extent. Unfortunately that precludes a number of valid mappings, and someone noticed and complained. So use a simple check to ensure that ranges in the mapping extents don't overlap. Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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