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| author | Eric W. Biederman | 2010-06-13 05:28:03 +0200 |
|---|---|---|
| committer | David S. Miller | 2010-06-16 23:55:34 +0200 |
| commit | 5c1469de7545a35a16ff2b902e217044a7d2f8a5 (patch) | |
| tree | 2a3b48da4dab1516234633ee5e71766801210e49 /include/linux/socket.h | |
| parent | scm: Reorder scm_cookie. (diff) | |
| download | kernel-qcow2-linux-5c1469de7545a35a16ff2b902e217044a7d2f8a5.tar.gz kernel-qcow2-linux-5c1469de7545a35a16ff2b902e217044a7d2f8a5.tar.xz kernel-qcow2-linux-5c1469de7545a35a16ff2b902e217044a7d2f8a5.zip | |
user_ns: Introduce user_nsmap_uid and user_ns_map_gid.
Define what happens when a we view a uid from one user_namespace
in another user_namepece.
- If the user namespaces are the same no mapping is necessary.
- For most cases of difference use overflowuid and overflowgid,
the uid and gid currently used for 16bit apis when we have a 32bit uid
that does fit in 16bits. Effectively the situation is the same,
we want to return a uid or gid that is not assigned to any user.
- For the case when we happen to be mapping the uid or gid of the
creator of the target user namespace use uid 0 and gid as confusing
that user with root is not a problem.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/socket.h')
0 files changed, 0 insertions, 0 deletions