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authorAkihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>2020-09-18 02:16:25 +0900
committerAkihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>2020-09-18 02:22:25 +0900
commit661786808c8a5249e05672af1f4d9cfaef39b38e (patch)
tree448e550f29119957d11060226dc8198837770973 /vendor/github.com/moby/sys/mount
parent031ddf9c8476202c6b0c810c6c0f6a7a0040c035 (diff)
downloadpodman-661786808c8a5249e05672af1f4d9cfaef39b38e.tar.gz
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update github.com/docker/docker and relevant deps
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
Diffstat (limited to 'vendor/github.com/moby/sys/mount')
-rw-r--r--vendor/github.com/moby/sys/mount/LICENSE202
-rw-r--r--vendor/github.com/moby/sys/mount/flags.go137
-rw-r--r--vendor/github.com/moby/sys/mount/flags_freebsd.go48
-rw-r--r--vendor/github.com/moby/sys/mount/flags_linux.go87
-rw-r--r--vendor/github.com/moby/sys/mount/flags_unsupported.go30
-rw-r--r--vendor/github.com/moby/sys/mount/go.mod8
-rw-r--r--vendor/github.com/moby/sys/mount/go.sum4
-rw-r--r--vendor/github.com/moby/sys/mount/mount.go67
-rw-r--r--vendor/github.com/moby/sys/mount/mount_errors.go46
-rw-r--r--vendor/github.com/moby/sys/mount/mounter_freebsd.go59
-rw-r--r--vendor/github.com/moby/sys/mount/mounter_linux.go73
-rw-r--r--vendor/github.com/moby/sys/mount/mounter_unsupported.go7
-rw-r--r--vendor/github.com/moby/sys/mount/sharedsubtree_linux.go73
-rw-r--r--vendor/github.com/moby/sys/mount/unmount_unix.go26
-rw-r--r--vendor/github.com/moby/sys/mount/unmount_unsupported.go11
15 files changed, 878 insertions, 0 deletions
diff --git a/vendor/github.com/moby/sys/mount/LICENSE b/vendor/github.com/moby/sys/mount/LICENSE
new file mode 100644
index 000000000..d64569567
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
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+
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diff --git a/vendor/github.com/moby/sys/mount/flags.go b/vendor/github.com/moby/sys/mount/flags.go
new file mode 100644
index 000000000..d514a9d8e
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/flags.go
@@ -0,0 +1,137 @@
+package mount
+
+import (
+ "fmt"
+ "strings"
+)
+
+var flags = map[string]struct {
+ clear bool
+ flag int
+}{
+ "defaults": {false, 0},
+ "ro": {false, RDONLY},
+ "rw": {true, RDONLY},
+ "suid": {true, NOSUID},
+ "nosuid": {false, NOSUID},
+ "dev": {true, NODEV},
+ "nodev": {false, NODEV},
+ "exec": {true, NOEXEC},
+ "noexec": {false, NOEXEC},
+ "sync": {false, SYNCHRONOUS},
+ "async": {true, SYNCHRONOUS},
+ "dirsync": {false, DIRSYNC},
+ "remount": {false, REMOUNT},
+ "mand": {false, MANDLOCK},
+ "nomand": {true, MANDLOCK},
+ "atime": {true, NOATIME},
+ "noatime": {false, NOATIME},
+ "diratime": {true, NODIRATIME},
+ "nodiratime": {false, NODIRATIME},
+ "bind": {false, BIND},
+ "rbind": {false, RBIND},
+ "unbindable": {false, UNBINDABLE},
+ "runbindable": {false, RUNBINDABLE},
+ "private": {false, PRIVATE},
+ "rprivate": {false, RPRIVATE},
+ "shared": {false, SHARED},
+ "rshared": {false, RSHARED},
+ "slave": {false, SLAVE},
+ "rslave": {false, RSLAVE},
+ "relatime": {false, RELATIME},
+ "norelatime": {true, RELATIME},
+ "strictatime": {false, STRICTATIME},
+ "nostrictatime": {true, STRICTATIME},
+}
+
+var validFlags = map[string]bool{
+ "": true,
+ "size": true,
+ "mode": true,
+ "uid": true,
+ "gid": true,
+ "nr_inodes": true,
+ "nr_blocks": true,
+ "mpol": true,
+}
+
+var propagationFlags = map[string]bool{
+ "bind": true,
+ "rbind": true,
+ "unbindable": true,
+ "runbindable": true,
+ "private": true,
+ "rprivate": true,
+ "shared": true,
+ "rshared": true,
+ "slave": true,
+ "rslave": true,
+}
+
+// MergeTmpfsOptions merge mount options to make sure there is no duplicate.
+func MergeTmpfsOptions(options []string) ([]string, error) {
+ // We use collisions maps to remove duplicates.
+ // For flag, the key is the flag value (the key for propagation flag is -1)
+ // For data=value, the key is the data
+ flagCollisions := map[int]bool{}
+ dataCollisions := map[string]bool{}
+
+ var newOptions []string
+ // We process in reverse order
+ for i := len(options) - 1; i >= 0; i-- {
+ option := options[i]
+ if option == "defaults" {
+ continue
+ }
+ if f, ok := flags[option]; ok && f.flag != 0 {
+ // There is only one propagation mode
+ key := f.flag
+ if propagationFlags[option] {
+ key = -1
+ }
+ // Check to see if there is collision for flag
+ if !flagCollisions[key] {
+ // We prepend the option and add to collision map
+ newOptions = append([]string{option}, newOptions...)
+ flagCollisions[key] = true
+ }
+ continue
+ }
+ opt := strings.SplitN(option, "=", 2)
+ if len(opt) != 2 || !validFlags[opt[0]] {
+ return nil, fmt.Errorf("Invalid tmpfs option %q", opt)
+ }
+ if !dataCollisions[opt[0]] {
+ // We prepend the option and add to collision map
+ newOptions = append([]string{option}, newOptions...)
+ dataCollisions[opt[0]] = true
+ }
+ }
+
+ return newOptions, nil
+}
+
+// Parse fstab type mount options into mount() flags
+// and device specific data
+func parseOptions(options string) (int, string) {
+ var (
+ flag int
+ data []string
+ )
+
+ for _, o := range strings.Split(options, ",") {
+ // If the option does not exist in the flags table or the flag
+ // is not supported on the platform,
+ // then it is a data value for a specific fs type
+ if f, exists := flags[o]; exists && f.flag != 0 {
+ if f.clear {
+ flag &= ^f.flag
+ } else {
+ flag |= f.flag
+ }
+ } else {
+ data = append(data, o)
+ }
+ }
+ return flag, strings.Join(data, ",")
+}
diff --git a/vendor/github.com/moby/sys/mount/flags_freebsd.go b/vendor/github.com/moby/sys/mount/flags_freebsd.go
new file mode 100644
index 000000000..69c50680d
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/flags_freebsd.go
@@ -0,0 +1,48 @@
+// +build freebsd,cgo
+
+package mount
+
+/*
+#include <sys/mount.h>
+*/
+import "C"
+
+const (
+ // RDONLY will mount the filesystem as read-only.
+ RDONLY = C.MNT_RDONLY
+
+ // NOSUID will not allow set-user-identifier or set-group-identifier bits to
+ // take effect.
+ NOSUID = C.MNT_NOSUID
+
+ // NOEXEC will not allow execution of any binaries on the mounted file system.
+ NOEXEC = C.MNT_NOEXEC
+
+ // SYNCHRONOUS will allow any I/O to the file system to be done synchronously.
+ SYNCHRONOUS = C.MNT_SYNCHRONOUS
+
+ // NOATIME will not update the file access time when reading from a file.
+ NOATIME = C.MNT_NOATIME
+)
+
+// These flags are unsupported.
+const (
+ BIND = 0
+ DIRSYNC = 0
+ MANDLOCK = 0
+ NODEV = 0
+ NODIRATIME = 0
+ UNBINDABLE = 0
+ RUNBINDABLE = 0
+ PRIVATE = 0
+ RPRIVATE = 0
+ SHARED = 0
+ RSHARED = 0
+ SLAVE = 0
+ RSLAVE = 0
+ RBIND = 0
+ RELATIME = 0
+ REMOUNT = 0
+ STRICTATIME = 0
+ mntDetach = 0
+)
diff --git a/vendor/github.com/moby/sys/mount/flags_linux.go b/vendor/github.com/moby/sys/mount/flags_linux.go
new file mode 100644
index 000000000..0425d0dd6
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/flags_linux.go
@@ -0,0 +1,87 @@
+package mount
+
+import (
+ "golang.org/x/sys/unix"
+)
+
+const (
+ // RDONLY will mount the file system read-only.
+ RDONLY = unix.MS_RDONLY
+
+ // NOSUID will not allow set-user-identifier or set-group-identifier bits to
+ // take effect.
+ NOSUID = unix.MS_NOSUID
+
+ // NODEV will not interpret character or block special devices on the file
+ // system.
+ NODEV = unix.MS_NODEV
+
+ // NOEXEC will not allow execution of any binaries on the mounted file system.
+ NOEXEC = unix.MS_NOEXEC
+
+ // SYNCHRONOUS will allow I/O to the file system to be done synchronously.
+ SYNCHRONOUS = unix.MS_SYNCHRONOUS
+
+ // DIRSYNC will force all directory updates within the file system to be done
+ // synchronously. This affects the following system calls: create, link,
+ // unlink, symlink, mkdir, rmdir, mknod and rename.
+ DIRSYNC = unix.MS_DIRSYNC
+
+ // REMOUNT will attempt to remount an already-mounted file system. This is
+ // commonly used to change the mount flags for a file system, especially to
+ // make a readonly file system writeable. It does not change device or mount
+ // point.
+ REMOUNT = unix.MS_REMOUNT
+
+ // MANDLOCK will force mandatory locks on a filesystem.
+ MANDLOCK = unix.MS_MANDLOCK
+
+ // NOATIME will not update the file access time when reading from a file.
+ NOATIME = unix.MS_NOATIME
+
+ // NODIRATIME will not update the directory access time.
+ NODIRATIME = unix.MS_NODIRATIME
+
+ // BIND remounts a subtree somewhere else.
+ BIND = unix.MS_BIND
+
+ // RBIND remounts a subtree and all possible submounts somewhere else.
+ RBIND = unix.MS_BIND | unix.MS_REC
+
+ // UNBINDABLE creates a mount which cannot be cloned through a bind operation.
+ UNBINDABLE = unix.MS_UNBINDABLE
+
+ // RUNBINDABLE marks the entire mount tree as UNBINDABLE.
+ RUNBINDABLE = unix.MS_UNBINDABLE | unix.MS_REC
+
+ // PRIVATE creates a mount which carries no propagation abilities.
+ PRIVATE = unix.MS_PRIVATE
+
+ // RPRIVATE marks the entire mount tree as PRIVATE.
+ RPRIVATE = unix.MS_PRIVATE | unix.MS_REC
+
+ // SLAVE creates a mount which receives propagation from its master, but not
+ // vice versa.
+ SLAVE = unix.MS_SLAVE
+
+ // RSLAVE marks the entire mount tree as SLAVE.
+ RSLAVE = unix.MS_SLAVE | unix.MS_REC
+
+ // SHARED creates a mount which provides the ability to create mirrors of
+ // that mount such that mounts and unmounts within any of the mirrors
+ // propagate to the other mirrors.
+ SHARED = unix.MS_SHARED
+
+ // RSHARED marks the entire mount tree as SHARED.
+ RSHARED = unix.MS_SHARED | unix.MS_REC
+
+ // RELATIME updates inode access times relative to modify or change time.
+ RELATIME = unix.MS_RELATIME
+
+ // STRICTATIME allows to explicitly request full atime updates. This makes
+ // it possible for the kernel to default to relatime or noatime but still
+ // allow userspace to override it.
+ STRICTATIME = unix.MS_STRICTATIME
+
+ mntDetach = unix.MNT_DETACH
+)
diff --git a/vendor/github.com/moby/sys/mount/flags_unsupported.go b/vendor/github.com/moby/sys/mount/flags_unsupported.go
new file mode 100644
index 000000000..e1d64f6b9
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/flags_unsupported.go
@@ -0,0 +1,30 @@
+// +build !linux,!freebsd freebsd,!cgo
+
+package mount
+
+// These flags are unsupported.
+const (
+ BIND = 0
+ DIRSYNC = 0
+ MANDLOCK = 0
+ NOATIME = 0
+ NODEV = 0
+ NODIRATIME = 0
+ NOEXEC = 0
+ NOSUID = 0
+ UNBINDABLE = 0
+ RUNBINDABLE = 0
+ PRIVATE = 0
+ RPRIVATE = 0
+ SHARED = 0
+ RSHARED = 0
+ SLAVE = 0
+ RSLAVE = 0
+ RBIND = 0
+ RELATIME = 0
+ REMOUNT = 0
+ STRICTATIME = 0
+ SYNCHRONOUS = 0
+ RDONLY = 0
+ mntDetach = 0
+)
diff --git a/vendor/github.com/moby/sys/mount/go.mod b/vendor/github.com/moby/sys/mount/go.mod
new file mode 100644
index 000000000..21cef0a95
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/go.mod
@@ -0,0 +1,8 @@
+module github.com/moby/sys/mount
+
+go 1.14
+
+require (
+ github.com/moby/sys/mountinfo v0.1.0
+ golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae
+)
diff --git a/vendor/github.com/moby/sys/mount/go.sum b/vendor/github.com/moby/sys/mount/go.sum
new file mode 100644
index 000000000..ae99f8596
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/go.sum
@@ -0,0 +1,4 @@
+github.com/moby/sys/mountinfo v0.1.0 h1:r8vMRbMAFEAfiNptYVokP+nfxPJzvRuia5e2vzXtENo=
+github.com/moby/sys/mountinfo v0.1.0/go.mod h1:w2t2Avltqx8vE7gX5l+QiBKxODu2TX0+Syr3h52Tw4o=
+golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae h1:/WDfKMnPU+m5M4xB+6x4kaepxRw6jWvR5iDRdvjHgy8=
+golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
diff --git a/vendor/github.com/moby/sys/mount/mount.go b/vendor/github.com/moby/sys/mount/mount.go
new file mode 100644
index 000000000..4a7bb27b1
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/mount.go
@@ -0,0 +1,67 @@
+// +build go1.13
+
+package mount
+
+import (
+ "fmt"
+ "sort"
+
+ "github.com/moby/sys/mountinfo"
+)
+
+// Mount will mount filesystem according to the specified configuration.
+// Options must be specified like the mount or fstab unix commands:
+// "opt1=val1,opt2=val2". See flags.go for supported option flags.
+func Mount(device, target, mType, options string) error {
+ flag, data := parseOptions(options)
+ return mount(device, target, mType, uintptr(flag), data)
+}
+
+// Unmount lazily unmounts a filesystem on supported platforms, otherwise does
+// a normal unmount. If target is not a mount point, no error is returned.
+func Unmount(target string) error {
+ return unmount(target, mntDetach)
+}
+
+// RecursiveUnmount unmounts the target and all mounts underneath, starting
+// with the deepest mount first. The argument does not have to be a mount
+// point itself.
+func RecursiveUnmount(target string) error {
+ // Fast path, works if target is a mount point that can be unmounted.
+ // On Linux, mntDetach flag ensures a recursive unmount. For other
+ // platforms, if there are submounts, we'll get EBUSY (and fall back
+ // to the slow path). NOTE we do not ignore EINVAL here as target might
+ // not be a mount point itself (but there can be mounts underneath).
+ if err := unmountBare(target, mntDetach); err == nil {
+ return nil
+ }
+
+ // Slow path: get all submounts, sort, unmount one by one.
+ mounts, err := mountinfo.GetMounts(mountinfo.PrefixFilter(target))
+ if err != nil {
+ return err
+ }
+
+ // Make the deepest mount be first
+ sort.Slice(mounts, func(i, j int) bool {
+ return len(mounts[i].Mountpoint) > len(mounts[j].Mountpoint)
+ })
+
+ var suberr error
+ for i, m := range mounts {
+ err = unmount(m.Mountpoint, mntDetach)
+ if err != nil {
+ if i == len(mounts)-1 { // last mount
+ return fmt.Errorf("%w (possible cause: %s)", err, suberr)
+ }
+ // This is a submount, we can ignore the error for now,
+ // the final unmount will fail if this is a real problem.
+ // With that in mind, the _first_ failed unmount error
+ // might be the real error cause, so let's keep it.
+ if suberr == nil {
+ suberr = err
+ }
+ }
+ }
+ return nil
+}
diff --git a/vendor/github.com/moby/sys/mount/mount_errors.go b/vendor/github.com/moby/sys/mount/mount_errors.go
new file mode 100644
index 000000000..936a26373
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/mount_errors.go
@@ -0,0 +1,46 @@
+// +build !windows
+
+package mount
+
+import "strconv"
+
+// mountError records an error from mount or unmount operation
+type mountError struct {
+ op string
+ source, target string
+ flags uintptr
+ data string
+ err error
+}
+
+func (e *mountError) Error() string {
+ out := e.op + " "
+
+ if e.source != "" {
+ out += e.source + ":" + e.target
+ } else {
+ out += e.target
+ }
+
+ if e.flags != uintptr(0) {
+ out += ", flags: 0x" + strconv.FormatUint(uint64(e.flags), 16)
+ }
+ if e.data != "" {
+ out += ", data: " + e.data
+ }
+
+ out += ": " + e.err.Error()
+ return out
+}
+
+// Cause returns the underlying cause of the error.
+// This is a convention used in github.com/pkg/errors
+func (e *mountError) Cause() error {
+ return e.err
+}
+
+// Unwrap returns the underlying error.
+// This is a convention used in golang 1.13+
+func (e *mountError) Unwrap() error {
+ return e.err
+}
diff --git a/vendor/github.com/moby/sys/mount/mounter_freebsd.go b/vendor/github.com/moby/sys/mount/mounter_freebsd.go
new file mode 100644
index 000000000..3964af4f7
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/mounter_freebsd.go
@@ -0,0 +1,59 @@
+package mount
+
+/*
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/_iovec.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+*/
+import "C"
+
+import (
+ "strings"
+ "syscall"
+ "unsafe"
+)
+
+func allocateIOVecs(options []string) []C.struct_iovec {
+ out := make([]C.struct_iovec, len(options))
+ for i, option := range options {
+ out[i].iov_base = unsafe.Pointer(C.CString(option))
+ out[i].iov_len = C.size_t(len(option) + 1)
+ }
+ return out
+}
+
+func mount(device, target, mType string, flag uintptr, data string) error {
+ isNullFS := false
+
+ xs := strings.Split(data, ",")
+ for _, x := range xs {
+ if x == "bind" {
+ isNullFS = true
+ }
+ }
+
+ options := []string{"fspath", target}
+ if isNullFS {
+ options = append(options, "fstype", "nullfs", "target", device)
+ } else {
+ options = append(options, "fstype", mType, "from", device)
+ }
+ rawOptions := allocateIOVecs(options)
+ for _, rawOption := range rawOptions {
+ defer C.free(rawOption.iov_base)
+ }
+
+ if errno := C.nmount(&rawOptions[0], C.uint(len(options)), C.int(flag)); errno != 0 {
+ return &mountError{
+ op: "mount",
+ source: device,
+ target: target,
+ flags: flag,
+ err: syscall.Errno(errno),
+ }
+ }
+ return nil
+}
diff --git a/vendor/github.com/moby/sys/mount/mounter_linux.go b/vendor/github.com/moby/sys/mount/mounter_linux.go
new file mode 100644
index 000000000..0c477cc3d
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/mounter_linux.go
@@ -0,0 +1,73 @@
+package mount
+
+import (
+ "golang.org/x/sys/unix"
+)
+
+const (
+ // ptypes is the set propagation types.
+ ptypes = unix.MS_SHARED | unix.MS_PRIVATE | unix.MS_SLAVE | unix.MS_UNBINDABLE
+
+ // pflags is the full set valid flags for a change propagation call.
+ pflags = ptypes | unix.MS_REC | unix.MS_SILENT
+
+ // broflags is the combination of bind and read only
+ broflags = unix.MS_BIND | unix.MS_RDONLY
+)
+
+// isremount returns true if either device name or flags identify a remount request, false otherwise.
+func isremount(device string, flags uintptr) bool {
+ switch {
+ // We treat device "" and "none" as a remount request to provide compatibility with
+ // requests that don't explicitly set MS_REMOUNT such as those manipulating bind mounts.
+ case flags&unix.MS_REMOUNT != 0, device == "", device == "none":
+ return true
+ default:
+ return false
+ }
+}
+
+func mount(device, target, mType string, flags uintptr, data string) error {
+ oflags := flags &^ ptypes
+ if !isremount(device, flags) || data != "" {
+ // Initial call applying all non-propagation flags for mount
+ // or remount with changed data
+ if err := unix.Mount(device, target, mType, oflags, data); err != nil {
+ return &mountError{
+ op: "mount",
+ source: device,
+ target: target,
+ flags: oflags,
+ data: data,
+ err: err,
+ }
+ }
+ }
+
+ if flags&ptypes != 0 {
+ // Change the propagation type.
+ if err := unix.Mount("", target, "", flags&pflags, ""); err != nil {
+ return &mountError{
+ op: "remount",
+ target: target,
+ flags: flags & pflags,
+ err: err,
+ }
+ }
+ }
+
+ if oflags&broflags == broflags {
+ // Remount the bind to apply read only.
+ if err := unix.Mount("", target, "", oflags|unix.MS_REMOUNT, ""); err != nil {
+ return &mountError{
+ op: "remount-ro",
+ target: target,
+ flags: oflags | unix.MS_REMOUNT,
+ err: err,
+ }
+
+ }
+ }
+
+ return nil
+}
diff --git a/vendor/github.com/moby/sys/mount/mounter_unsupported.go b/vendor/github.com/moby/sys/mount/mounter_unsupported.go
new file mode 100644
index 000000000..15380671c
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/mounter_unsupported.go
@@ -0,0 +1,7 @@
+// +build !linux,!freebsd freebsd,!cgo
+
+package mount
+
+func mount(device, target, mType string, flag uintptr, data string) error {
+ panic("Not implemented")
+}
diff --git a/vendor/github.com/moby/sys/mount/sharedsubtree_linux.go b/vendor/github.com/moby/sys/mount/sharedsubtree_linux.go
new file mode 100644
index 000000000..948e6bacd
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/sharedsubtree_linux.go
@@ -0,0 +1,73 @@
+package mount
+
+import "github.com/moby/sys/mountinfo"
+
+// MakeShared ensures a mounted filesystem has the SHARED mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeShared(mountPoint string) error {
+ return ensureMountedAs(mountPoint, SHARED)
+}
+
+// MakeRShared ensures a mounted filesystem has the RSHARED mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeRShared(mountPoint string) error {
+ return ensureMountedAs(mountPoint, RSHARED)
+}
+
+// MakePrivate ensures a mounted filesystem has the PRIVATE mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakePrivate(mountPoint string) error {
+ return ensureMountedAs(mountPoint, PRIVATE)
+}
+
+// MakeRPrivate ensures a mounted filesystem has the RPRIVATE mount option
+// enabled. See the supported options in flags.go for further reference.
+func MakeRPrivate(mountPoint string) error {
+ return ensureMountedAs(mountPoint, RPRIVATE)
+}
+
+// MakeSlave ensures a mounted filesystem has the SLAVE mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeSlave(mountPoint string) error {
+ return ensureMountedAs(mountPoint, SLAVE)
+}
+
+// MakeRSlave ensures a mounted filesystem has the RSLAVE mount option enabled.
+// See the supported options in flags.go for further reference.
+func MakeRSlave(mountPoint string) error {
+ return ensureMountedAs(mountPoint, RSLAVE)
+}
+
+// MakeUnbindable ensures a mounted filesystem has the UNBINDABLE mount option
+// enabled. See the supported options in flags.go for further reference.
+func MakeUnbindable(mountPoint string) error {
+ return ensureMountedAs(mountPoint, UNBINDABLE)
+}
+
+// MakeRUnbindable ensures a mounted filesystem has the RUNBINDABLE mount
+// option enabled. See the supported options in flags.go for further reference.
+func MakeRUnbindable(mountPoint string) error {
+ return ensureMountedAs(mountPoint, RUNBINDABLE)
+}
+
+// MakeMount ensures that the file or directory given is a mount point,
+// bind mounting it to itself it case it is not.
+func MakeMount(mnt string) error {
+ mounted, err := mountinfo.Mounted(mnt)
+ if err != nil {
+ return err
+ }
+ if mounted {
+ return nil
+ }
+
+ return mount(mnt, mnt, "none", uintptr(BIND), "")
+}
+
+func ensureMountedAs(mnt string, flags int) error {
+ if err := MakeMount(mnt); err != nil {
+ return err
+ }
+
+ return mount("", mnt, "none", uintptr(flags), "")
+}
diff --git a/vendor/github.com/moby/sys/mount/unmount_unix.go b/vendor/github.com/moby/sys/mount/unmount_unix.go
new file mode 100644
index 000000000..924d059a7
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/unmount_unix.go
@@ -0,0 +1,26 @@
+// +build !windows
+
+package mount
+
+import "golang.org/x/sys/unix"
+
+func unmountBare(target string, flags int) error {
+ return unix.Unmount(target, flags)
+}
+
+func unmount(target string, flags int) error {
+ err := unmountBare(target, flags)
+ if err == nil || err == unix.EINVAL {
+ // Ignore "not mounted" error here. Note the same error
+ // can be returned if flags are invalid, so this code
+ // assumes that the flags value is always correct.
+ return nil
+ }
+
+ return &mountError{
+ op: "umount",
+ target: target,
+ flags: uintptr(flags),
+ err: err,
+ }
+}
diff --git a/vendor/github.com/moby/sys/mount/unmount_unsupported.go b/vendor/github.com/moby/sys/mount/unmount_unsupported.go
new file mode 100644
index 000000000..4d6073ec6
--- /dev/null
+++ b/vendor/github.com/moby/sys/mount/unmount_unsupported.go
@@ -0,0 +1,11 @@
+// +build windows
+
+package mount
+
+func unmountBare(_ string, _ int) error {
+ panic("Not implemented")
+}
+
+func unmount(_ string, _ int) error {
+ panic("Not implemented")
+}