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utils: do not generate duplicate range

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do not generate a duplicated range when --userns=keep-id:uid=0 or
--userns=keep-id:gid=0 are used.

Closes: https://github.com/containers/podman/issues/22078

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano
2024-03-18 22:16:58 +01:00
parent 0e38815387
commit 816c7279e1
2 changed files with 16 additions and 2 deletions
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4
pkg/util/utils.go
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@ -195,7 +195,7 @@ func getRootlessKeepIDMapping(uid, gid int, uids, gids []idtools.IDMap) (*stypes
options.UIDMap, options.GIDMap = nil, nil
if len(uids) > 0 {
if len(uids) > 0 && uid != 0 {
options.UIDMap = append(options.UIDMap, idtools.IDMap{ContainerID: 0, HostID: 1, Size: min(uid, maxUID)})
}
options.UIDMap = append(options.UIDMap, idtools.IDMap{ContainerID: uid, HostID: 0, Size: 1})
@ -203,7 +203,7 @@ func getRootlessKeepIDMapping(uid, gid int, uids, gids []idtools.IDMap) (*stypes
options.UIDMap = append(options.UIDMap, idtools.IDMap{ContainerID: uid + 1, HostID: uid + 1, Size: maxUID - uid})
}
if len(gids) > 0 {
if len(gids) > 0 && gid != 0 {
options.GIDMap = append(options.GIDMap, idtools.IDMap{ContainerID: 0, HostID: 1, Size: min(gid, maxGID)})
}
options.GIDMap = append(options.GIDMap, idtools.IDMap{ContainerID: gid, HostID: 0, Size: 1})