From 542d8fe95f66c0a3aabb9d964c260a0b3b9aaae8 Mon Sep 17 00:00:00 2001 From: Daniel J Walsh Date: Fri, 9 Nov 2018 11:22:44 -0500 Subject: Better document rootless containers Need to return an error pointing user in right direction if rootless podman fails, because of no /etc/subuid or /etc/subgid files. Also fix up man pages to better describe rootless podman. Signed-off-by: Daniel J Walsh --- pkg/rootless/rootless_linux.go | 3 +++ 1 file changed, 3 insertions(+) (limited to 'pkg') diff --git a/pkg/rootless/rootless_linux.go b/pkg/rootless/rootless_linux.go index 5c45f2694..ff8c8fe34 100644 --- a/pkg/rootless/rootless_linux.go +++ b/pkg/rootless/rootless_linux.go @@ -187,6 +187,9 @@ func BecomeRootInUserNS() (bool, int, error) { if username == "" { user, err := user.LookupId(fmt.Sprintf("%d", os.Getuid())) if err != nil && os.Getenv("PODMAN_ALLOW_SINGLE_ID_MAPPING_IN_USERNS") == "" { + if os.IsNotExist(err) { + return false, 0, errors.Wrapf(err, "/etc/subuid or /etc/subgid does not exist, see subuid/subgid man pages for information on these files") + } return false, 0, errors.Wrapf(err, "could not find user by UID nor USER env was set") } if err == nil { -- cgit v1.2.3-54-g00ecf