Example #1
0
File: init.go Project: tdr130/oz
func (st *initState) bindWhitelist(fsys *fs.Filesystem, wlist []oz.WhitelistItem) error {
	if wlist == nil {
		return nil
	}
	for _, wl := range wlist {
		flags := 0
		if wl.CanCreate {
			flags |= fs.BindCanCreate
		}
		if wl.Ignore {
			flags |= fs.BindIgnore
		}
		if wl.ReadOnly {
			flags |= fs.BindReadOnly
		}
		if wl.Force {
			flags |= fs.BindForce
		}
		if wl.NoFollow {
			flags |= fs.BindNoFollow
		}
		if wl.Path == "" {
			continue
		}
		if err := fsys.BindTo(wl.Path, wl.Target, flags, st.display, st.user); err != nil {
			return err
		}
	}
	return nil
}
Example #2
0
File: mount.go Project: drptbl/oz
func mount(fpath string, fsys *fs.Filesystem, log *logging.Logger) {
	if _, err := os.Stat(fpath); err == nil {
		//log.Notice("Adding file `%s`.", fpath)
		if err := fsys.BindPath(fpath, fs.BindCanCreate, nil); err != nil {
			log.Error("%v while adding `%s`!", err, fpath)
			os.Exit(1)
		}
	}
}
Example #3
0
File: init.go Project: drptbl/oz
func (st *initState) applyBlacklist(fsys *fs.Filesystem, blist []oz.BlacklistItem) error {
	if blist == nil {
		return nil
	}
	for _, bl := range blist {
		if err := fsys.BlacklistPath(bl.Path, st.user); err != nil {
			return err
		}
	}
	return nil
}
Example #4
0
File: mount.go Project: tdr130/oz
func unmount(fpath string, fsys *fs.Filesystem, log *logging.Logger) {
	sbpath := path.Join(fsys.Root(), fpath)
	if _, err := os.Stat(sbpath); err == nil {
		//log.Notice("Removing file `%s`.", fpath)
		if err := fsys.UnbindPath(fpath); err != nil {
			log.Error("%v", err)
			os.Exit(1)
		}
	} else {
		log.Warning("%v", err)
	}
}
Example #5
0
File: init.go Project: drptbl/oz
func (st *initState) bindWhitelist(fsys *fs.Filesystem, wlist []oz.WhitelistItem) error {
	if wlist == nil {
		return nil
	}
	for _, wl := range wlist {
		flags := fs.BindCanCreate
		if wl.ReadOnly {
			flags |= fs.BindReadOnly
		}
		if err := fsys.BindPath(wl.Path, flags, st.user); err != nil {
			return err
		}
	}
	return nil
}
Example #6
0
File: mount.go Project: tdr130/oz
func mount(fpath string, readonly bool, fsys *fs.Filesystem, log *logging.Logger) {
	//log.Notice("Adding file `%s`.", fpath)
	// TODO: Check if target is empty directory (and not a mountpoint) and allow the bind in that case
	if _, err := os.Stat(fpath); err != nil {
		log.Error("%v", err)
		os.Exit(1)
	}
	flags := 0 //fs.BindCanCreate
	if readonly {
		flags |= fs.BindReadOnly
	}
	if err := fsys.BindPath(fpath, flags, -1, nil); err != nil {
		log.Error("%v", err)
		os.Exit(1)
	}
}
Example #7
0
File: rootfs.go Project: Safe3/oz
func setupRootfs(fsys *fs.Filesystem, uid, gid uint32, useFullDev bool) error {
	if err := os.MkdirAll(fsys.Root(), 0755); err != nil {
		return fmt.Errorf("could not create rootfs path '%s': %v", fsys.Root(), err)
	}

	if err := syscall.Mount("", "/", "", syscall.MS_PRIVATE|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("failed to set MS_PRIVATE on '%s': %v", "/", err)
	}

	flags := uintptr(syscall.MS_NOSUID | syscall.MS_NOEXEC | syscall.MS_NODEV)
	if err := syscall.Mount("", fsys.Root(), "tmpfs", flags, "mode=755,gid=0"); err != nil {
		return fmt.Errorf("failed to mount tmpfs on '%s': %v", fsys.Root(), err)
	}

	if err := syscall.Mount("", fsys.Root(), "", syscall.MS_PRIVATE, ""); err != nil {
		return fmt.Errorf("failed to set MS_PRIVATE on '%s': %v", fsys.Root(), err)
	}

	for _, p := range basicBindDirs {
		if err := fsys.BindPath(p, fs.BindReadOnly, nil); err != nil {
			return fmt.Errorf("failed to bind directory '%s': %v", p, err)
		}
	}

	for _, p := range basicEmptyDirs {
		if err := fsys.CreateEmptyDir(p); err != nil {
			return fmt.Errorf("failed to create empty directory '%s': %v", p, err)
		}
	}

	rup := path.Join(fsys.Root(), "/run/user", strconv.FormatUint(uint64(uid), 10))
	if err := os.MkdirAll(rup, 0700); err != nil {
		return fmt.Errorf("failed to create user rundir: %v", err)
	}
	if err := os.Chown(rup, int(uid), int(gid)); err != nil {
		return fmt.Errorf("failed to chiwn user rundir: %v", err)
	}

	dp := path.Join(fsys.Root(), "dev")
	if err := syscall.Mount("", dp, "tmpfs", syscall.MS_NOSUID|syscall.MS_NOEXEC, "mode=755"); err != nil {
		return err

	}
	if !useFullDev {
		for _, d := range basicDevices {
			if err := fsys.CreateDevice(d.path, d.dev, d.mode, d.gid); err != nil {
				return err
			}
		}
	}

	tp := path.Join(fsys.Root(), "/tmp")
	tflags := uintptr(syscall.MS_NODEV | syscall.MS_NOSUID | syscall.MS_NOEXEC | syscall.MS_REC)
	if err := syscall.Mount("", tp, "tmpfs", tflags, "mode=777"); err != nil {
		return err
	}

	for _, sl := range append(basicSymlinks, deviceSymlinks...) {
		if err := fsys.CreateSymlink(sl[0], sl[1]); err != nil {
			return err
		}
	}

	if err := fsys.CreateBlacklistPaths(); err != nil {
		return err
	}

	for _, bl := range basicBlacklist {
		if err := fsys.BlacklistPath(bl, nil); err != nil {
			return err
		}
	}
	return nil
}
Example #8
0
File: rootfs.go Project: drptbl/oz
func setupRootfs(fsys *fs.Filesystem) error {
	if err := os.MkdirAll(fsys.Root(), 0755); err != nil {
		return fmt.Errorf("could not create rootfs path '%s': %v", fsys.Root(), err)
	}

	if err := syscall.Mount("", "/", "", syscall.MS_PRIVATE|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("failed to set MS_PRIVATE on '%s': %v", "/", err)
	}

	flags := uintptr(syscall.MS_NOSUID | syscall.MS_NOEXEC | syscall.MS_NODEV)
	if err := syscall.Mount("", fsys.Root(), "tmpfs", flags, "mode=755,gid=0"); err != nil {
		return fmt.Errorf("failed to mount tmpfs on '%s': %v", fsys.Root(), err)
	}

	if err := syscall.Mount("", fsys.Root(), "", syscall.MS_PRIVATE, ""); err != nil {
		return fmt.Errorf("failed to set MS_PRIVATE on '%s': %v", fsys.Root(), err)
	}

	for _, p := range basicBindDirs {
		if err := fsys.BindPath(p, fs.BindReadOnly, nil); err != nil {
			return fmt.Errorf("failed to bind directory '%s': %v", p, err)
		}
	}

	for _, p := range basicEmptyDirs {
		if err := fsys.CreateEmptyDir(p); err != nil {
			return fmt.Errorf("failed to create empty directory '%s': %v", p, err)
		}
	}

	dp := path.Join(fsys.Root(), "dev")
	if err := syscall.Mount("", dp, "tmpfs", syscall.MS_NOSUID|syscall.MS_NOEXEC, "mode=755"); err != nil {
		return err

	}
	for _, d := range basicDevices {
		if err := fsys.CreateDevice(d.path, d.dev, d.mode); err != nil {
			return err
		}
	}

	for _, sl := range append(basicSymlinks, deviceSymlinks...) {
		if err := fsys.CreateSymlink(sl[0], sl[1]); err != nil {
			return err
		}
	}

	if err := fsys.CreateBlacklistPaths(); err != nil {
		return err
	}

	for _, bl := range basicBlacklist {
		if err := fsys.BlacklistPath(bl, nil); err != nil {
			return err
		}
	}
	return nil
}