diff options
| author |   Andrey Vagin <avagin@openvz.org> | 2016-09-06 00:47:15 -0700 |
|---|---|---|
| committer |   Eric W. Biederman <ebiederm@xmission.com> | 2016-09-22 19:59:41 -0500 |
| commit | a7306ed8d94af729ecef8b6e37506a1c6fc14788 (patch) | |
| tree | 0d45320911d2a339bc0abd6bacd5703c7308c08c /include/uapi/linux/nsfs.h | |
| parent | nsfs: add ioctl to get an owning user namespace for ns file descriptor (diff) | |
| download | linux-dev-a7306ed8d94af729ecef8b6e37506a1c6fc14788.tar.xz linux-dev-a7306ed8d94af729ecef8b6e37506a1c6fc14788.zip | |
nsfs: add ioctl to get a parent namespace
Pid and user namepaces are hierarchical. There is no way to discover
parent-child relationships.
In a future we will use this interface to dump and restore nested
namespaces.
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'include/uapi/linux/nsfs.h')
| -rw-r--r-- | include/uapi/linux/nsfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/nsfs.h b/include/uapi/linux/nsfs.h index 5cacd5c1b5d7..3af617230d1b 100644 --- a/include/uapi/linux/nsfs.h +++ b/include/uapi/linux/nsfs.h @@ -7,5 +7,7 @@ /* Returns a file descriptor that refers to an owning user namespace */ #define NS_GET_USERNS _IO(NSIO, 0x1) +/* Returns a file descriptor that refers to a parent namespace */ +#define NS_GET_PARENT _IO(NSIO, 0x2) #endif /* __LINUX_NSFS_H */ |