From ae68bec75cf59e8a530dbc55f320f7bb0be9a62b Mon Sep 17 00:00:00 2001 From: Daniel J Walsh Date: Tue, 6 Nov 2018 06:26:35 -0500 Subject: Don't fail if /etc/passwd or /etc/group does not exists Container images can be created without passwd or group file, currently if one of these containers gets run with a --user flag the container blows up complaining about t a missing /etc/passwd file. We just need to check if the error on read is ENOEXIST then allow the read to return, not fail. Signed-off-by: Daniel J Walsh --- libpod/container_internal.go | 4 ++-- pkg/lookup/lookup.go | 8 +++++--- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/libpod/container_internal.go b/libpod/container_internal.go index d928c4aed..558099e82 100644 --- a/libpod/container_internal.go +++ b/libpod/container_internal.go @@ -5,7 +5,6 @@ import ( "context" "encoding/json" "fmt" - "github.com/opencontainers/runc/libcontainer/user" "io" "io/ioutil" "os" @@ -25,6 +24,7 @@ import ( "github.com/containers/storage/pkg/archive" "github.com/containers/storage/pkg/chrootarchive" "github.com/containers/storage/pkg/mount" + "github.com/opencontainers/runc/libcontainer/user" spec "github.com/opencontainers/runtime-spec/specs-go" "github.com/opencontainers/runtime-tools/generate" "github.com/opencontainers/selinux/go-selinux/label" @@ -1069,7 +1069,7 @@ func (c *Container) generatePasswd() (string, error) { } originPasswdFile := filepath.Join(c.state.Mountpoint, "/etc/passwd") orig, err := ioutil.ReadFile(originPasswdFile) - if err != nil { + if err != nil && !os.IsNotExist(err) { return "", errors.Wrapf(err, "unable to read passwd file %s", originPasswdFile) } diff --git a/pkg/lookup/lookup.go b/pkg/lookup/lookup.go index b27e2a724..a9d975b4b 100644 --- a/pkg/lookup/lookup.go +++ b/pkg/lookup/lookup.go @@ -1,10 +1,12 @@ package lookup import ( + "os" + "strconv" + "github.com/cyphar/filepath-securejoin" "github.com/opencontainers/runc/libcontainer/user" "github.com/sirupsen/logrus" - "strconv" ) const ( @@ -116,7 +118,7 @@ func GetUser(containerMount, userIDorName string) (*user.User, error) { } return u.Uid == uid }) - if err != nil { + if err != nil && !os.IsNotExist(err) { return nil, err } if len(users) > 0 { @@ -146,7 +148,7 @@ func GetGroup(containerMount, groupIDorName string) (*user.Group, error) { } return g.Gid == gid }) - if err != nil { + if err != nil && !os.IsNotExist(err) { return nil, err } if len(groups) > 0 { -- cgit v1.2.3-54-g00ecf