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* nstool: Detect what namespaces target is inDavid Gibson2023-04-081-14/+143
| | | | | | | | | | Give nstool the ability to detect what namespaces the target process is in, relative to where it's called. That is, those namespace types for which the target is not in the same namespace as the caller. For now, just print this information with "info", which can be useful for debugging. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Replace "pid" subcommand with "info" subcommandDavid Gibson2023-04-081-11/+49
| | | | | | | | | The new subcommand gives more information about the holder process and its namespace, and may be further extended in future. Add some options which give the old behaviour for existing scripts. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Split some command line parsing and socket setup to subcommandsDavid Gibson2023-04-081-34/+68
| | | | | | | | This will make it easier to differentiate the options to those commands further in future. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Move description of its operation modes from comment to usageDavid Gibson2023-04-081-15/+11
| | | | | | | Easier to see it there. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Reverse parameters to nstoolDavid Gibson2023-04-081-14/+14
| | | | | | | | Having the "subcommand" first is more conventional and will make it more natural for future extensions I have planned. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Rename nsholder to nstoolDavid Gibson2023-04-081-0/+139
In preparation for extending what it does. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>