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chrootuser: default to GID 0 when given a numeric --user

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When we're given a numeric --user value, default to GID 0 if the numeric
ID doesn't correspond to a user entry in /etc/passwd that can provide us
with the user's primary group ID.

Make sure that GetAdditionalGroupsForUser() returns wrapped errors.

Also test various user:group forms.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

Closes: #728
Approved by: mheon
This commit is contained in:
Nalin Dahyabhai
2018-05-04 11:26:56 -04:00
committed by Atomic Bot
parent 796d6c894a
commit e686269da3
4 changed files with 45 additions and 14 deletions
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4
pkg/chrootuser/user_basic.go
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@ -17,3 +17,7 @@ func lookupGroupInContainer(rootdir, groupname string) (uint64, error) {
func lookupGroupForUIDInContainer(rootdir string, userid uint64) (string, uint64, error) {
return "", 0, errors.New("primary group lookup by uid not supported")
}
func lookupAdditionalGroupsForUIDInContainer(rootdir string, userid uint64) (gid []uint32, err error) {
return nil, errors.New("supplemental groups list lookup by uid not supported")
}