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Fix handling of CheckRootlessUIDRange

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If I have multiple ranges of UIDs specified in the /etc/subuid, this check
blows up and incorrectly blocks the use of --user flag.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
This commit is contained in:
Daniel J Walsh
2020-10-05 08:34:48 -04:00
parent caace52d54
commit 30bd8ed506
1 changed files with 5 additions and 4 deletions
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9
pkg/util/utils_linux.go
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@ -60,11 +60,12 @@ func CheckRootlessUIDRange(uid int) error {
if err != nil {
return err
}
total := 0
for _, u := range uids {
// add 1 since we also map in the user's own UID
if uid > u.Size+1 {
return errors.Errorf("requested user's UID %d is too large for the rootless user namespace", uid)
}
total += u.Size
}
if uid > total {
return errors.Errorf("requested user's UID %d is too large for the rootless user namespace", uid)
}
return nil
}