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79240b9eaf
All the go-lint work forced any existing "Uid" -> "UID", but seems to not have the same rules for Gid, so stat package has calls UID() and Gid(). Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
84 lines
3.1 KiB
Go
84 lines
3.1 KiB
Go
// +build experimental
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package main
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import (
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/docker/docker/pkg/system"
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"github.com/go-check/check"
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)
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func (s *DockerSuite) TestExperimentalVersion(c *check.C) {
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out, _ := dockerCmd(c, "version")
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for _, line := range strings.Split(out, "\n") {
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if strings.HasPrefix(line, "Experimental (client):") || strings.HasPrefix(line, "Experimental (server):") {
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c.Assert(line, check.Matches, "*true")
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}
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}
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out, _ = dockerCmd(c, "-v")
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if !strings.Contains(out, ", experimental") {
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c.Fatalf("docker version did not contain experimental: %s", out)
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}
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}
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// user namespaces test: run daemon with remapped root setting
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// 1. validate uid/gid maps are set properly
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// 2. verify that files created are owned by remapped root
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func (s *DockerDaemonSuite) TestDaemonUserNamespaceRootSetting(c *check.C) {
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testRequires(c, NativeExecDriver)
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testRequires(c, SameHostDaemon)
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c.Assert(s.d.StartWithBusybox("--userns-remap", "default"), check.IsNil)
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tmpDir, err := ioutil.TempDir("", "userns")
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if err != nil {
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c.Fatal(err)
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}
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defer os.RemoveAll(tmpDir)
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// we need to find the uid and gid of the remapped root from the daemon's root dir info
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uidgid := strings.Split(filepath.Base(s.d.root), ".")
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c.Assert(len(uidgid), check.Equals, 2, check.Commentf("Should have gotten uid/gid strings from root dirname: %s", filepath.Base(s.d.root)))
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uid, err := strconv.Atoi(uidgid[0])
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c.Assert(err, check.IsNil, check.Commentf("Can't parse uid: %v", err))
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gid, err := strconv.Atoi(uidgid[1])
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c.Assert(err, check.IsNil, check.Commentf("Can't parse gid: %v", err))
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//writeable by the remapped root UID/GID pair
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c.Assert(os.Chown(tmpDir, uid, gid), check.IsNil)
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out, err := s.d.Cmd("run", "-d", "--name", "userns", "-v", tmpDir+":/goofy", "busybox", "sh", "-c", "touch /goofy/testfile; top")
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c.Assert(err, check.IsNil, check.Commentf("Output: %s", out))
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pid, err := s.d.Cmd("inspect", "--format='{{.State.Pid}}'", "userns")
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if err != nil {
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c.Fatalf("Could not inspect running container: out: %q; err: %v", pid, err)
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}
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// check the uid and gid maps for the PID to ensure root is remapped
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// (cmd = cat /proc/<pid>/uid_map | grep -E '0\s+9999\s+1')
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out, rc1, err := runCommandPipelineWithOutput(
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exec.Command("cat", "/proc/"+strings.TrimSpace(pid)+"/uid_map"),
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exec.Command("grep", "-E", fmt.Sprintf("0[[:space:]]+%d[[:space:]]+", uid)))
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c.Assert(rc1, check.Equals, 0, check.Commentf("Didn't match uid_map: output: %s", out))
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out, rc2, err := runCommandPipelineWithOutput(
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exec.Command("cat", "/proc/"+strings.TrimSpace(pid)+"/gid_map"),
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exec.Command("grep", "-E", fmt.Sprintf("0[[:space:]]+%d[[:space:]]+", gid)))
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c.Assert(rc2, check.Equals, 0, check.Commentf("Didn't match gid_map: output: %s", out))
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// check that the touched file is owned by remapped uid:gid
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stat, err := system.Stat(filepath.Join(tmpDir, "testfile"))
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if err != nil {
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c.Fatal(err)
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}
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c.Assert(stat.UID(), check.Equals, uint32(uid), check.Commentf("Touched file not owned by remapped root UID"))
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c.Assert(stat.GID(), check.Equals, uint32(gid), check.Commentf("Touched file not owned by remapped root GID"))
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}
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