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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2013-03-22 07:19:11 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2014-09-13 20:16:02 -0700 |
| commit | c3f29a89b549cce484762e58404d6c643ea6b098 (patch) | |
| tree | 3e68231158da10d350424b7b0455f7137f721871 | |
| parent | b6462f75197fc4c7699b26a741507501bd55ef41 (diff) | |
| download | man-pages-c3f29a89b549cce484762e58404d6c643ea6b098.tar.gz | |
user_namespaces.7: Move discussion of availability of user namespaces to NOTES
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man7/user_namespaces.7 | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/man7/user_namespaces.7 b/man7/user_namespaces.7 index 319a139bac..afc3234df2 100644 --- a/man7/user_namespaces.7 +++ b/man7/user_namespaces.7 @@ -46,20 +46,6 @@ while at the same time having a user ID of 0 inside the namespace; in other words, the process has full privileges for operations inside the user namespace, but is unprivileged for operations outside the namespace. - -Use of user namespaces requires a kernel that is configured with the -.B CONFIG_USER_NS -option. -User namespaces require support in a range of subsystems across -the kernel. -When an unsupported subsystem is configured into the kernel, -it is not possible to configure user namespaces support. -As at Linux 3.8, most relevant subsystems support user namespaces, -but there are a number of file systems that do not. -Linux 3.9 added user namespaces support for many of the remaining -unsupported file systems: -Plan 9 (9P), Andrew File System (AFS), Ceph, CIFS, CODA, NFS, and OCFS2. -XFS support for user namespaces is not yet available. .\" .\" ============================================================ .\" @@ -574,6 +560,20 @@ because of their potential to confuse set-user-ID-root applications. In general, it becomes safe to allow the root user in a user namespace to use those features because it is impossible, while in a user namespace, to gain more privilege than the root user of a user namespace has. +.SS Availability +Use of user namespaces requires a kernel that is configured with the +.B CONFIG_USER_NS +option. +User namespaces require support in a range of subsystems across +the kernel. +When an unsupported subsystem is configured into the kernel, +it is not possible to configure user namespaces support. +As at Linux 3.8, most relevant subsystems support user namespaces, +but there are a number of file systems that do not. +Linux 3.9 added user namespaces support for many of the remaining +unsupported file systems: +Plan 9 (9P), Andrew File System (AFS), Ceph, CIFS, CODA, NFS, and OCFS2. +XFS support for user namespaces is not yet available. .SH EXAMPLE The program below is designed to allow experimenting with user namespaces, as well as other types of namespaces. |