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Proof-of-concept: set up necessary idmappings for userns_mode=auto in Container.create() #499

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Proof-of-concept: set up necessary idmappings for userns_mode=auto in Container.create() #499

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27 changes: 27 additions & 0 deletions podman/domain/containers_create.py
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Original file line number Diff line number Diff line change
Expand Up @@ -739,6 +739,33 @@ def parse_host_port(_container_port, _protocol, _host):
if "userns_mode" in args:
params["userns"] = {"nsmode": args.pop("userns_mode")}

# proof-of-concept
def merge_dicts(d1, d2):
for dk in d2:
if dk in d1:
if not isinstance(d1[dk], dict) or not isinstance(d2[dk], dict):
d1[dk] = d2[dk]
else:
d1[dk] = merge_dicts(d1[dk], d2[dk])
else:
d1[dk] = d2[dk]
return d1

default_idmappings = {
"AutoUserNs": False if params["userns"]["nsmode"] != "auto" else True,
"AutoUserNsOpts": None if params["userns"]["nsmode"] != "auto" else {
"AdditionalUIDMappings": None,
"AdditionalGIDMappings": None,
"PasswdFile": "",
"GroupFile": "",
"InitialSize": 0,
"Size": 0,
},
}

old_idmappings = params.get("idmappings") or {}
params.update(idmappings=merge_dicts(default_idmappings, old_idmappings))

if "uts_mode" in args:
params["utsns"] = {"nsmode": args.pop("uts_mode")}

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