Golang system.Umask函數代碼示例

本文整理匯總了Golang中github.com/dotcloud/docker/pkg/system.Umask函數的典型用法代碼示例。如果您正苦於以下問題：Golang Umask函數的具體用法？Golang Umask怎麽用？Golang Umask使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。

在下文中一共展示了Umask函數的13個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: Setup

// Setup initializes the proper /dev/console inside the rootfs path
func Setup(rootfs, consolePath, mountLabel string) error {
	oldMask := system.Umask(0000)
	defer system.Umask(oldMask)

	if err := os.Chmod(consolePath, 0600); err != nil {
		return err
	}
	if err := os.Chown(consolePath, 0, 0); err != nil {
		return err
	}
	if err := label.SetFileLabel(consolePath, mountLabel); err != nil {
		return fmt.Errorf("set file label %s %s", consolePath, err)
	}

	dest := filepath.Join(rootfs, "dev/console")

	f, err := os.Create(dest)
	if err != nil && !os.IsExist(err) {
		return fmt.Errorf("create %s %s", dest, err)
	}
	if f != nil {
		f.Close()
	}

	if err := system.Mount(consolePath, dest, "bind", syscall.MS_BIND, ""); err != nil {
		return fmt.Errorf("bind %s to %s %s", consolePath, dest, err)
	}
	return nil
}

開發者ID:Emsu，項目名稱:docker，代碼行數:30，代碼來源:console.go

示例2: setupConsole

// setupConsole ensures that the container has a proper /dev/console setup
func setupConsole(rootfs, console string) error {
	oldMask := system.Umask(0000)
	defer system.Umask(oldMask)

	stat, err := os.Stat(console)
	if err != nil {
		return fmt.Errorf("stat console %s %s", console, err)
	}
	var (
		st   = stat.Sys().(*syscall.Stat_t)
		dest = filepath.Join(rootfs, "dev/console")
	)
	if err := os.Remove(dest); err != nil && !os.IsNotExist(err) {
		return fmt.Errorf("remove %s %s", dest, err)
	}
	if err := os.Chmod(console, 0600); err != nil {
		return err
	}
	if err := os.Chown(console, 0, 0); err != nil {
		return err
	}
	if err := system.Mknod(dest, (st.Mode&^07777)|0600, int(st.Rdev)); err != nil {
		return fmt.Errorf("mknod %s %s", dest, err)
	}
	if err := system.Mount(console, dest, "bind", syscall.MS_BIND, ""); err != nil {
		return fmt.Errorf("bind %s to %s %s", console, dest, err)
	}
	return nil
}

開發者ID:hsg4ok，項目名稱:docker，代碼行數:30，代碼來源:mount.go

示例3: Setup

// Setup initializes the proper /dev/console inside the rootfs path
func Setup(rootfs, consolePath, mountLabel string) error {
	oldMask := system.Umask(0000)
	defer system.Umask(oldMask)

	stat, err := os.Stat(consolePath)
	if err != nil {
		return fmt.Errorf("stat console %s %s", consolePath, err)
	}
	var (
		st   = stat.Sys().(*syscall.Stat_t)
		dest = filepath.Join(rootfs, "dev/console")
	)
	if err := os.Remove(dest); err != nil && !os.IsNotExist(err) {
		return fmt.Errorf("remove %s %s", dest, err)
	}
	if err := os.Chmod(consolePath, 0600); err != nil {
		return err
	}
	if err := os.Chown(consolePath, 0, 0); err != nil {
		return err
	}
	if err := system.Mknod(dest, (st.Mode&^07777)|0600, int(st.Rdev)); err != nil {
		return fmt.Errorf("mknod %s %s", dest, err)
	}
	if err := label.SetFileLabel(consolePath, mountLabel); err != nil {
		return fmt.Errorf("set file label %s %s", dest, err)
	}
	return nil
}

開發者ID:B-Rich，項目名稱:docker，代碼行數:30，代碼來源:console.go

示例4: CopyN

// CopyN copies the device node from the host into the rootfs
func CopyN(rootfs string, nodesToCopy []string) error {
	oldMask := system.Umask(0000)
	defer system.Umask(oldMask)

	for _, node := range nodesToCopy {
		if err := Copy(rootfs, node); err != nil {
			return err
		}
	}
	return nil
}

開發者ID:jmmills，項目名稱:docker，代碼行數:12，代碼來源:nodes.go

示例5: CreateDeviceNodes

// Create the device nodes in the container.
func CreateDeviceNodes(rootfs string, nodesToCreate []*devices.Device) error {
	oldMask := system.Umask(0000)
	defer system.Umask(oldMask)

	for _, node := range nodesToCreate {
		if err := CreateDeviceNode(rootfs, node); err != nil {
			return err
		}
	}
	return nil
}

開發者ID:Blackbaud-GregWyne，項目名稱:docker，代碼行數:12，代碼來源:nodes.go

示例6: setupNewMountNamespace

// setupNewMountNamespace is used to initialize a new mount namespace for an new
// container in the rootfs that is specified.
//
// There is no need to unmount the new mounts because as soon as the mount namespace
// is no longer in use, the mounts will be removed automatically
func setupNewMountNamespace(rootfs, console string, readonly bool) error {
	// mount as slave so that the new mounts do not propagate to the host
	if err := system.Mount("", "/", "", syscall.MS_SLAVE|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mounting / as slave %s", err)
	}
	if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mouting %s as bind %s", rootfs, err)
	}
	if readonly {
		if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REMOUNT|syscall.MS_RDONLY|syscall.MS_REC, ""); err != nil {
			return fmt.Errorf("mounting %s as readonly %s", rootfs, err)
		}
	}
	if err := mountSystem(rootfs); err != nil {
		return fmt.Errorf("mount system %s", err)
	}
	if err := copyDevNodes(rootfs); err != nil {
		return fmt.Errorf("copy dev nodes %s", err)
	}
	// In non-privileged mode, this fails. Discard the error.
	setupLoopbackDevices(rootfs)
	if err := setupDev(rootfs); err != nil {
		return err
	}
	if console != "" {
		if err := setupPtmx(rootfs, console); err != nil {
			return err
		}
	}
	if err := system.Chdir(rootfs); err != nil {
		return fmt.Errorf("chdir into %s %s", rootfs, err)
	}

	pivotDir, err := ioutil.TempDir(rootfs, ".pivot_root")
	if err != nil {
		return fmt.Errorf("can't create pivot_root dir %s", pivotDir, err)
	}
	if err := system.Pivotroot(rootfs, pivotDir); err != nil {
		return fmt.Errorf("pivot_root %s", err)
	}
	if err := system.Chdir("/"); err != nil {
		return fmt.Errorf("chdir / %s", err)
	}

	// path to pivot dir now changed, update
	pivotDir = filepath.Join("/", filepath.Base(pivotDir))

	if err := system.Unmount(pivotDir, syscall.MNT_DETACH); err != nil {
		return fmt.Errorf("unmount pivot_root dir %s", err)
	}

	if err := os.Remove(pivotDir); err != nil {
		return fmt.Errorf("remove pivot_root dir %s", err)
	}

	system.Umask(0022)

	return nil
}

開發者ID:hsg4ok，項目名稱:docker，代碼行數:64，代碼來源:mount.go

示例7: copyDevNodes

// copyDevNodes mknods the hosts devices so the new container has access to them
func copyDevNodes(rootfs string) error {
	oldMask := system.Umask(0000)
	defer system.Umask(oldMask)

	for _, node := range []string{
		"null",
		"zero",
		"full",
		"random",
		"urandom",
		"tty",
	} {
		if err := copyDevNode(rootfs, node); err != nil {
			return err
		}
	}
	return nil
}

開發者ID:hsg4ok，項目名稱:docker，代碼行數:19，代碼來源:mount.go

示例8: InitializeMountNamespace

// InitializeMountNamespace setups up the devices, mount points, and filesystems for use inside a
// new mount namepsace
func InitializeMountNamespace(rootfs, console string, container *libcontainer.Container) error {
	var (
		err  error
		flag = syscall.MS_PRIVATE
	)
	if container.NoPivotRoot {
		flag = syscall.MS_SLAVE
	}
	if err := system.Mount("", "/", "", uintptr(flag|syscall.MS_REC), ""); err != nil {
		return fmt.Errorf("mounting / with flags %X %s", (flag | syscall.MS_REC), err)
	}
	if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mouting %s as bind %s", rootfs, err)
	}
	if err := mountSystem(rootfs, container); err != nil {
		return fmt.Errorf("mount system %s", err)
	}
	if err := setupBindmounts(rootfs, container.Mounts); err != nil {
		return fmt.Errorf("bind mounts %s", err)
	}
	if err := nodes.CopyN(rootfs, nodes.DefaultNodes, true); err != nil {
		return fmt.Errorf("copy dev nodes %s", err)
	}
	if err := nodes.CopyN(rootfs, nodes.AdditionalNodes, false); err != nil {
		return fmt.Errorf("copy additional dev nodes %s", err)
	}
	if err := SetupPtmx(rootfs, console, container.Context["mount_label"]); err != nil {
		return err
	}
	if err := setupDevSymlinks(rootfs); err != nil {
		return fmt.Errorf("dev symlinks %s", err)
	}
	if err := system.Chdir(rootfs); err != nil {
		return fmt.Errorf("chdir into %s %s", rootfs, err)
	}

	if container.NoPivotRoot {
		err = MsMoveRoot(rootfs)
	} else {
		err = PivotRoot(rootfs)
	}
	if err != nil {
		return err
	}

	if container.ReadonlyFs {
		if err := SetReadonly(); err != nil {
			return fmt.Errorf("set readonly %s", err)
		}
	}

	system.Umask(0022)

	return nil
}

開發者ID:jmccrohan，項目名稱:docker，代碼行數:57，代碼來源:init.go

示例9: InitializeMountNamespace

// InitializeMountNamespace setups up the devices, mount points, and filesystems for use inside a
// new mount namepsace
func InitializeMountNamespace(rootfs, console string, container *libcontainer.Container) error {
	var (
		err  error
		flag = syscall.MS_PRIVATE
	)
	if container.NoPivotRoot {
		flag = syscall.MS_SLAVE
	}
	if err := system.Mount("", "/", "", uintptr(flag|syscall.MS_REC), ""); err != nil {
		return fmt.Errorf("mounting / as slave %s", err)
	}
	if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mouting %s as bind %s", rootfs, err)
	}
	if err := mountSystem(rootfs, container); err != nil {
		return fmt.Errorf("mount system %s", err)
	}
	if err := setupBindmounts(rootfs, container.Mounts); err != nil {
		return fmt.Errorf("bind mounts %s", err)
	}
	if err := nodes.CopyN(rootfs, nodes.DefaultNodes); err != nil {
		return fmt.Errorf("copy dev nodes %s", err)
	}
	if restrictionPath := container.Context["restriction_path"]; restrictionPath != "" {
		if err := restrict.Restrict(rootfs, restrictionPath); err != nil {
			return fmt.Errorf("restrict %s", err)
		}
	}
	if err := SetupPtmx(rootfs, console, container.Context["mount_label"]); err != nil {
		return err
	}
	if err := system.Chdir(rootfs); err != nil {
		return fmt.Errorf("chdir into %s %s", rootfs, err)
	}

	if container.NoPivotRoot {
		err = MsMoveRoot(rootfs)
	} else {
		err = PivotRoot(rootfs)
	}
	if err != nil {
		return err
	}

	if container.ReadonlyFs {
		if err := SetReadonly(); err != nil {
			return fmt.Errorf("set readonly %s", err)
		}
	}

	system.Umask(0022)

	return nil
}

開發者ID:volker-schukai，項目名稱:docker，代碼行數:56，代碼來源:init.go

示例10: InitializeMountNamespace

// InitializeMountNamespace sets up the devices, mount points, and filesystems for use inside a
// new mount namespace.
func InitializeMountNamespace(rootfs, console string, mountConfig *MountConfig) error {
	var (
		err  error
		flag = syscall.MS_PRIVATE
	)
	if mountConfig.NoPivotRoot {
		flag = syscall.MS_SLAVE
	}
	if err := system.Mount("", "/", "", uintptr(flag|syscall.MS_REC), ""); err != nil {
		return fmt.Errorf("mounting / with flags %X %s", (flag | syscall.MS_REC), err)
	}
	if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mouting %s as bind %s", rootfs, err)
	}
	if err := mountSystem(rootfs, mountConfig); err != nil {
		return fmt.Errorf("mount system %s", err)
	}
	if err := setupBindmounts(rootfs, mountConfig); err != nil {
		return fmt.Errorf("bind mounts %s", err)
	}
	if err := nodes.CreateDeviceNodes(rootfs, mountConfig.DeviceNodes); err != nil {
		return fmt.Errorf("create device nodes %s", err)
	}
	if err := SetupPtmx(rootfs, console, mountConfig.MountLabel); err != nil {
		return err
	}
	if err := setupDevSymlinks(rootfs); err != nil {
		return fmt.Errorf("dev symlinks %s", err)
	}
	if err := system.Chdir(rootfs); err != nil {
		return fmt.Errorf("chdir into %s %s", rootfs, err)
	}

	if mountConfig.NoPivotRoot {
		err = MsMoveRoot(rootfs)
	} else {
		err = PivotRoot(rootfs)
	}
	if err != nil {
		return err
	}

	if mountConfig.ReadonlyFs {
		if err := SetReadonly(); err != nil {
			return fmt.Errorf("set readonly %s", err)
		}
	}

	system.Umask(0022)

	return nil
}

開發者ID:hwpaas，項目名稱:docker，代碼行數:54，代碼來源:init.go

示例11: setupNewMountNamespace

// setupNewMountNamespace is used to initialize a new mount namespace for an new
// container in the rootfs that is specified.
//
// There is no need to unmount the new mounts because as soon as the mount namespace
// is no longer in use, the mounts will be removed automatically
func setupNewMountNamespace(rootfs, console string, readonly, noPivotRoot bool) error {
	flag := syscall.MS_PRIVATE
	if noPivotRoot {
		flag = syscall.MS_SLAVE
	}
	if err := system.Mount("", "/", "", uintptr(flag|syscall.MS_REC), ""); err != nil {
		return fmt.Errorf("mounting / as slave %s", err)
	}
	if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mouting %s as bind %s", rootfs, err)
	}
	if readonly {
		if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REMOUNT|syscall.MS_RDONLY|syscall.MS_REC, ""); err != nil {
			return fmt.Errorf("mounting %s as readonly %s", rootfs, err)
		}
	}
	if err := mountSystem(rootfs); err != nil {
		return fmt.Errorf("mount system %s", err)
	}
	if err := copyDevNodes(rootfs); err != nil {
		return fmt.Errorf("copy dev nodes %s", err)
	}
	// In non-privileged mode, this fails. Discard the error.
	setupLoopbackDevices(rootfs)
	if err := setupDev(rootfs); err != nil {
		return err
	}
	if console != "" {
		if err := setupPtmx(rootfs, console); err != nil {
			return err
		}
	}
	if err := system.Chdir(rootfs); err != nil {
		return fmt.Errorf("chdir into %s %s", rootfs, err)
	}

	if noPivotRoot {
		if err := rootMsMove(rootfs); err != nil {
			return err
		}
	} else {
		if err := rootPivot(rootfs); err != nil {
			return err
		}
	}

	system.Umask(0022)

	return nil
}

開發者ID:kippandrew，項目名稱:docker，代碼行數:55，代碼來源:mount.go

示例12: setupNewMountNamespace

// setupNewMountNamespace is used to initialize a new mount namespace for an new
// container in the rootfs that is specified.
//
// There is no need to unmount the new mounts because as soon as the mount namespace
// is no longer in use, the mounts will be removed automatically
func setupNewMountNamespace(rootfs, console string, readonly bool) error {
	// mount as slave so that the new mounts do not propagate to the host
	if err := system.Mount("", "/", "", syscall.MS_SLAVE|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mounting / as slave %s", err)
	}
	if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mouting %s as bind %s", rootfs, err)
	}
	if readonly {
		if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REMOUNT|syscall.MS_RDONLY|syscall.MS_REC, ""); err != nil {
			return fmt.Errorf("mounting %s as readonly %s", rootfs, err)
		}
	}
	if err := mountSystem(rootfs); err != nil {
		return fmt.Errorf("mount system %s", err)
	}
	if err := copyDevNodes(rootfs); err != nil {
		return fmt.Errorf("copy dev nodes %s", err)
	}
	// In non-privileged mode, this fails. Discard the error.
	setupLoopbackDevices(rootfs)
	if err := setupDev(rootfs); err != nil {
		return err
	}
	if console != "" {
		if err := setupPtmx(rootfs, console); err != nil {
			return err
		}
	}
	if err := system.Chdir(rootfs); err != nil {
		return fmt.Errorf("chdir into %s %s", rootfs, err)
	}
	if err := system.Mount(rootfs, "/", "", syscall.MS_MOVE, ""); err != nil {
		return fmt.Errorf("mount move %s into / %s", rootfs, err)
	}
	if err := system.Chroot("."); err != nil {
		return fmt.Errorf("chroot . %s", err)
	}
	if err := system.Chdir("/"); err != nil {
		return fmt.Errorf("chdir / %s", err)
	}

	system.Umask(0022)

	return nil
}

開發者ID:Rovanion，項目名稱:docker，代碼行數:51，代碼來源:mount.go

示例13: setupNewMountNamespace

// setupNewMountNamespace is used to initialize a new mount namespace for an new
// container in the rootfs that is specified.
//
// There is no need to unmount the new mounts because as soon as the mount namespace
// is no longer in use, the mounts will be removed automatically
func setupNewMountNamespace(rootfs string, bindMounts []libcontainer.Mount, console string, readonly, noPivotRoot bool, mountLabel string) error {
	flag := syscall.MS_PRIVATE
	if noPivotRoot {
		flag = syscall.MS_SLAVE
	}
	if err := system.Mount("", "/", "", uintptr(flag|syscall.MS_REC), ""); err != nil {
		return fmt.Errorf("mounting / as slave %s", err)
	}
	if err := system.Mount(rootfs, rootfs, "bind", syscall.MS_BIND|syscall.MS_REC, ""); err != nil {
		return fmt.Errorf("mouting %s as bind %s", rootfs, err)
	}
	if err := mountSystem(rootfs, mountLabel); err != nil {
		return fmt.Errorf("mount system %s", err)
	}

	for _, m := range bindMounts {
		flags := syscall.MS_BIND | syscall.MS_REC
		if !m.Writable {
			flags = flags | syscall.MS_RDONLY
		}
		dest := filepath.Join(rootfs, m.Destination)
		if err := system.Mount(m.Source, dest, "bind", uintptr(flags), ""); err != nil {
			return fmt.Errorf("mounting %s into %s %s", m.Source, dest, err)
		}
		if m.Private {
			if err := system.Mount("", dest, "none", uintptr(syscall.MS_PRIVATE), ""); err != nil {
				return fmt.Errorf("mounting %s private %s", dest, err)
			}
		}
	}

	if err := copyDevNodes(rootfs); err != nil {
		return fmt.Errorf("copy dev nodes %s", err)
	}
	// In non-privileged mode, this fails. Discard the error.
	setupLoopbackDevices(rootfs)
	if err := setupPtmx(rootfs, console, mountLabel); err != nil {
		return err
	}
	if err := system.Chdir(rootfs); err != nil {
		return fmt.Errorf("chdir into %s %s", rootfs, err)
	}

	if noPivotRoot {
		if err := rootMsMove(rootfs); err != nil {
			return err
		}
	} else {
		if err := rootPivot(rootfs); err != nil {
			return err
		}
	}

	if readonly {
		if err := system.Mount("/", "/", "bind", syscall.MS_BIND|syscall.MS_REMOUNT|syscall.MS_RDONLY|syscall.MS_REC, ""); err != nil {
			return fmt.Errorf("mounting %s as readonly %s", rootfs, err)
		}
	}

	system.Umask(0022)

	return nil
}

開發者ID:rajatpandit，項目名稱:docker，代碼行數:68，代碼來源:mount.go

注：本文中的github.com/dotcloud/docker/pkg/system.Umask函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。