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mount_namespaces.7: Explain how a namespace's mount point list is initialized 

Provide a more detailed explanation of the initialization of
the mount point list in a new mount namespace.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2019-10-08 22:51:59 +02:00
parent 47b69a37cf
commit 534755eed9
1 changed files with 15 additions and 4 deletions
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19
man7/mount_namespaces.7
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@ -48,15 +48,26 @@ resides.
(All of the processes that reside in the same mount namespace
will see the same view in these files.)
.PP
When a process creates a new mount namespace using
A new mount namespace is created using either
.BR clone (2)
or
.BR unshare (2)
with the
.BR CLONE_NEWNS
flag, the mount point list for the new namespace is a
.I copy
of the caller's mount point list.
flag.
When a new mount namespace is created,
its mount point list is initialized as follows:
.IP * 3
If the namespace is created using
.BR clone (2),
the mount point list of the child's namespace is a copy
of the mount point list in the parent's namespace.
.IP *
If the namespace is created using
.BR unshare (2),
the mount point list of the new namespace is a copy of
the mount point list in the caller's previous mount namespace.
.PP
Subsequent modifications to the mount point list
.RB ( mount (2)
and