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Merge pull request #1117 from runcom/setup-cwd

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container_create: setup cwd for containers
This commit is contained in:
Mrunal Patel 2017-11-04 05:21:26 -07:00 committed by GitHub
commit 3f9e539bde
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 51 additions and 0 deletions
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22
server/container_create.go
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@ -1141,6 +1141,12 @@ func (s *Server) createSandboxContainer(ctx context.Context, containerID string,
containerCwd = runtimeCwd
}
specgen.SetProcessCwd(containerCwd)
if err := setupWorkingDirectory(mountPoint, mountLabel, containerCwd); err != nil {
if err1 := s.StorageRuntimeServer().StopContainer(containerID); err1 != nil {
return nil, fmt.Errorf("can't umount container after cwd error %v: %v", err, err1)
}
return nil, err
}
var secretMounts []rspec.Mount
if len(s.config.DefaultMounts) > 0 {
@ -1320,3 +1326,19 @@ func clearReadOnly(m *rspec.Mount) {
}
m.Options = opt
}
func setupWorkingDirectory(rootfs, mountLabel, containerCwd string) error {
fp, err := symlink.FollowSymlinkInScope(filepath.Join(rootfs, containerCwd), rootfs)
if err != nil {
return err
}
if err := os.MkdirAll(fp, 0755); err != nil {
return err
}
if mountLabel != "" {
if err1 := label.Relabel(fp, mountLabel, true); err1 != nil && err1 != unix.ENOTSUP {
return fmt.Errorf("relabel failed %s: %v", fp, err1)
}
}
return nil
}

29
test/ctr.bats
View file

@ -953,3 +953,32 @@ function teardown() {
cleanup_pods
stop_crio
}
@test "ctr correctly setup working directory" {
start_crio
run crioctl pod run --config "$TESTDATA"/sandbox_config.json
echo "$output"
[ "$status" -eq 0 ]
pod_id="$output"
notexistcwd=$(cat "$TESTDATA"/container_config.json | python -c 'import json,sys;obj=json.load(sys.stdin);obj["working_dir"] = "/thisshouldntexistatall"; json.dump(obj, sys.stdout)')
echo "$notexistcwd" > "$TESTDIR"/container_cwd_notexist.json
run crioctl ctr create --config "$TESTDIR"/container_cwd_notexist.json --pod "$pod_id"
echo "$output"
[ "$status" -eq 0 ]
ctr_id="$output"
run crioctl ctr start --id "$ctr_id"
echo "$output"
[ "$status" -eq 0 ]
filecwd=$(cat "$TESTDATA"/container_config.json | python -c 'import json,sys;obj=json.load(sys.stdin);obj["working_dir"] = "/etc/passwd"; obj["metadata"]["name"] = "container2"; json.dump(obj, sys.stdout)')
echo "$filecwd" > "$TESTDIR"/container_cwd_file.json
run crioctl ctr create --config "$TESTDIR"/container_cwd_file.json --pod "$pod_id"
echo "$output"
[ "$status" -ne 0 ]
ctr_id="$output"
[[ "$output" =~ "not a directory" ]]
cleanup_ctrs
cleanup_pods
stop_crio
}