diff options
| -rw-r--r-- | libpod/container_internal.go | 10 | ||||
| -rw-r--r-- | libpod/diff.go | 5 | ||||
| -rw-r--r-- | test/system/030-run.bats | 14 |
3 files changed, 27 insertions, 2 deletions
diff --git a/libpod/container_internal.go b/libpod/container_internal.go index 53b85a466..9af652409 100644 --- a/libpod/container_internal.go +++ b/libpod/container_internal.go @@ -1530,6 +1530,16 @@ func (c *Container) mountStorage() (_ string, deferredErr error) { }() } + // If /etc/mtab does not exist in container image, then we need to + // create it, so that mount command within the container will work. + mtab := filepath.Join(mountPoint, "/etc/mtab") + if err := os.MkdirAll(filepath.Dir(mtab), 0755); err != nil { + return "", errors.Wrap(err, "error creating mtab directory") + } + if err = os.Symlink("/proc/mounts", mtab); err != nil && !os.IsExist(err) { + return "", err + } + // Request a mount of all named volumes for _, v := range c.config.NamedVolumes { vol, err := c.mountNamedVolume(v, mountPoint) diff --git a/libpod/diff.go b/libpod/diff.go index 6ce8d809a..c5a53478b 100644 --- a/libpod/diff.go +++ b/libpod/diff.go @@ -7,7 +7,7 @@ import ( "github.com/pkg/errors" ) -var containerMounts = map[string]bool{ +var initInodes = map[string]bool{ "/dev": true, "/etc/hostname": true, "/etc/hosts": true, @@ -17,6 +17,7 @@ var containerMounts = map[string]bool{ "/run/.containerenv": true, "/run/secrets": true, "/sys": true, + "/etc/mtab": true, } // GetDiff returns the differences between the two images, layers, or containers @@ -36,7 +37,7 @@ func (r *Runtime) GetDiff(from, to string) ([]archive.Change, error) { changes, err := r.store.Changes(fromLayer, toLayer) if err == nil { for _, c := range changes { - if containerMounts[c.Path] { + if initInodes[c.Path] { continue } rchanges = append(rchanges, c) diff --git a/test/system/030-run.bats b/test/system/030-run.bats index 9a136ff13..e12c32ef5 100644 --- a/test/system/030-run.bats +++ b/test/system/030-run.bats @@ -690,4 +690,18 @@ json-file | f run_podman rm $cid } +@test "podman run no /etc/mtab " { + tmpdir=$PODMAN_TMPDIR/build-test + mkdir -p $tmpdir + + cat >$tmpdir/Dockerfile <<EOF +FROM $IMAGE +RUN rm /etc/mtab +EOF + expected="'/etc/mtab' -> '/proc/mounts'" + run_podman build -t nomtab $tmpdir + run_podman run --rm nomtab stat -c %N /etc/mtab + is "$output" "$expected" "/etc/mtab should be created" +} + # vim: filetype=sh |