Quoting Richard Guy Briggs (rgb@xxxxxxxxxx):
> ---
Acked-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
(some nitpicking below)
Thanks, Richard. IMO this patchset is great at the moment. Now if I
checkpoint a container, migrate it to another machine, and restart it
there, the serial numbers will no longer match, but as the creations are
all logged, userspace can track the changed snum, so I don't believe
that is a problem. (Pretty sure we've discussed that before, mostly
mentioning it here to think through it myself)
> Documentation/filesystems/proc.txt | 16 ++++++++++++++++
> 1 files changed, 16 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
> index ddc531a..c4bfd6f 100644
> --- a/Documentation/filesystems/proc.txt
> +++ b/Documentation/filesystems/proc.txt
> @@ -42,6 +42,7 @@ Table of Contents
> 3.6 /proc/<pid>/comm & /proc/<pid>/task/<tid>/comm
> 3.7 /proc/<pid>/task/<tid>/children - Information about task children
> 3.8 /proc/<pid>/fdinfo/<fd> - Information about opened file
> + 3.9 /proc/<pid>/ns/<ns>{,_snum} - Information about process namespaces
>
> 4 Configuring procfs
> 4.1 Mount options
> @@ -1744,6 +1745,21 @@ pair provide additional information particular to the objects they represent.
> optional and may be omitted if no marks created yet.
>
>
> +3.9 /proc/<pid>/ns/<nstype>{,_snum} - Information about process namespaces
> +--------------------------------------------------------------------------
> +These files provides information about the namespaces within which the process
s/provides/provide/
> +is contained. The files named only with the namespace type <nstype> contain a
> +link that lists the containing namespace' inode number in its proc filesystem.
s/'/'s/
... Maybe add "And which can be used with setns(2)."
> +The files with suffix _snum contain a link that lists the containing
> +namespace' instance serial number, unique per kernel since boot. The
s/'/'s/
> +namespace types are self-describing.
> +
> +The output format of the inode links is:
> + <nstype>:[<inode_number>]
> +The output format of the serial number links is:
> + <nstype>_snum:[<serial_number>]
> +
> +
> ------------------------------------------------------------------------------
> Configuring procfs
> ------------------------------------------------------------------------------
> --
> 1.7.1
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