Golang system.Unmount函数代码示例

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本文整理汇总了Golang中github.com/dotcloud/docker/pkg/system.Unmount函数的典型用法代码示例。如果您正苦于以下问题：Golang Unmount函数的具体用法？Golang Unmount怎么用？Golang Unmount使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Unmount函数的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: 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
}

开发者ID:hsg4ok，项目名称:docker，代码行数:64，代码来源:mount.go

示例2: remountProc

// remountProc is used to detach and remount the proc filesystem
// commonly needed with running a new process inside an existing container
func remountProc() error {
	if err := system.Unmount("/proc", syscall.MNT_DETACH); err != nil {
		return err
	}
	if err := system.Mount("proc", "/proc", "proc", uintptr(defaultMountFlags), ""); err != nil {
		return err
	}
	return nil
}

开发者ID:hsg4ok，项目名称:docker，代码行数:11，代码来源:mount.go

示例3: remountSys

func remountSys() error {
	if err := system.Unmount("/sys", syscall.MNT_DETACH); err != nil {
		if err != syscall.EINVAL {
			return err
		}
	} else {
		if err := system.Mount("sysfs", "/sys", "sysfs", uintptr(defaultMountFlags), ""); err != nil {
			return err
		}
	}
	return nil
}

开发者ID:hsg4ok，项目名称:docker，代码行数:12，代码来源:mount.go

示例4: PivotRoot

func PivotRoot(rootfs string) error {
	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)
	}
	return os.Remove(pivotDir)
}

开发者ID:B-Rich，项目名称:docker，代码行数:18，代码来源:pivotroot.go

注：本文中的github.com/dotcloud/docker/pkg/system.Unmount函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。