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Fix userns-remap option when username & UID match

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Signed-off-by: Grant Millar <rid@cylo.io>
This commit is contained in:
Grant Millar 2021-02-09 16:13:35 +00:00
parent 1c39b1c44c
commit 2ad187fd4a
1 changed files with 38 additions and 25 deletions
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63
pkg/idtools/idtools_unix.go
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@ -245,38 +245,51 @@ func NewIdentityMapping(name string) (*IdentityMapping, error) {
return nil, fmt.Errorf("Could not get user for username %s: %v", name, err)
}
uid := strconv.Itoa(usr.Uid)
subuidRangesWithUserName, err := parseSubuid(name)
subuidRanges, err := lookupSubUIDRanges(usr)
if err != nil {
return nil, err
}
subgidRangesWithUserName, err := parseSubgid(name)
subgidRanges, err := lookupSubGIDRanges(usr)
if err != nil {
return nil, err
}
subuidRangesWithUID, err := parseSubuid(uid)
if err != nil {
return nil, err
}
subgidRangesWithUID, err := parseSubgid(uid)
if err != nil {
return nil, err
}
subuidRanges := append(subuidRangesWithUserName, subuidRangesWithUID...)
subgidRanges := append(subgidRangesWithUserName, subgidRangesWithUID...)
if len(subuidRanges) == 0 {
return nil, errors.Errorf("no subuid ranges found for user %q", name)
}
if len(subgidRanges) == 0 {
return nil, errors.Errorf("no subgid ranges found for user %q", name)
}
return &IdentityMapping{
uids: createIDMap(subuidRanges),
gids: createIDMap(subgidRanges),
uids: subuidRanges,
gids: subgidRanges,
}, nil
}
func lookupSubUIDRanges(usr user.User) ([]IDMap, error) {
rangeList, err := parseSubuid(strconv.Itoa(usr.Uid))
if err != nil {
return nil, err
}
if len(rangeList) == 0 {
rangeList, err = parseSubuid(usr.Name)
if err != nil {
return nil, err
}
}
if len(rangeList) == 0 {
return nil, errors.Errorf("no subuid ranges found for user %q", usr.Name)
}
return createIDMap(rangeList), nil
}
func lookupSubGIDRanges(usr user.User) ([]IDMap, error) {
rangeList, err := parseSubgid(strconv.Itoa(usr.Uid))
if err != nil {
return nil, err
}
if len(rangeList) == 0 {
rangeList, err = parseSubgid(usr.Name)
if err != nil {
return nil, err
}
}
if len(rangeList) == 0 {
return nil, errors.Errorf("no subgid ranges found for user %q", usr.Name)
}
return createIDMap(rangeList), nil
}