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podman: drop checking valid rootless UID

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do not check whether the specified ID is valid in the user namespace.

crun handles this case[1], so the check in Podman prevents to get to
the OCI runtime at all.

$ podman run --user 10:0 --uidmap 0:0:1 --rm -ti fedora:33 sh -c 'id; cat /proc/self/uid_map'
uid=10(10) gid=0(root) groups=0(root),65534(nobody)
        10          0          1

[1] https://github.com/containers/crun/pull/556

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano
2020-12-11 15:35:41 +01:00
parent deb00425c2
commit f711f5a68d
4 changed files with 0 additions and 38 deletions
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5
libpod/container_internal_linux.go
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@ -424,11 +424,6 @@ func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
}
if c.config.User != "" {
if rootless.IsRootless() {
if err := util.CheckRootlessUIDRange(execUser.Uid); err != nil {
return nil, err
}
}
// User and Group must go together
g.SetProcessUID(uint32(execUser.Uid))
g.SetProcessGID(uint32(execUser.Gid))