vendor: update github.com/containerd/continuity

Signed-off-by: Edward Pilatowicz <edward.pilatowicz@oracle.com>

vendor/github.com/containerd/continuity/devices/devices.go

@@ -0,0 +1,5 @@
+package devices
+
+import "fmt"
+
+var ErrNotSupported = fmt.Errorf("not supported")

vendor/github.com/containerd/continuity/devices/devices_darwin.go

@@ -0,0 +1,15 @@
+package devices
+
+// from /usr/include/sys/types.h
+
+func getmajor(dev int32) uint64 {
+	return (uint64(dev) >> 24) & 0xff
+}
+
+func getminor(dev int32) uint64 {
+	return uint64(dev) & 0xffffff
+}
+
+func makedev(major int, minor int) int {
+	return ((major << 24) | minor)
+}

vendor/github.com/containerd/continuity/devices/devices_dummy.go

@@ -0,0 +1,23 @@
+// +build solaris,!cgo
+
+//
+// Implementing the functions below requires cgo support.  Non-cgo stubs
+// versions are defined below to enable cross-compilation of source code
+// that depends on these functions, but the resultant cross-compiled
+// binaries cannot actually be used.  If the stub function(s) below are
+// actually invoked they will cause the calling process to exit.
+//
+
+package devices
+
+func getmajor(dev uint64) uint64 {
+	panic("getmajor() support requires cgo.")
+}
+
+func getminor(dev uint64) uint64 {
+	panic("getminor() support requires cgo.")
+}
+
+func makedev(major int, minor int) int {
+	panic("makedev() support requires cgo.")
+}

vendor/github.com/containerd/continuity/devices/devices_freebsd.go

@@ -0,0 +1,15 @@
+package devices
+
+// from /usr/include/sys/types.h
+
+func getmajor(dev uint32) uint64 {
+	return (uint64(dev) >> 24) & 0xff
+}
+
+func getminor(dev uint32) uint64 {
+	return uint64(dev) & 0xffffff
+}
+
+func makedev(major int, minor int) int {
+	return ((major << 24) | minor)
+}

vendor/github.com/containerd/continuity/devices/devices_linux.go

@@ -0,0 +1,15 @@
+package devices
+
+// from /usr/include/linux/kdev_t.h
+
+func getmajor(dev uint64) uint64 {
+	return dev >> 8
+}
+
+func getminor(dev uint64) uint64 {
+	return dev & 0xff
+}
+
+func makedev(major int, minor int) int {
+	return ((major << 8) | minor)
+}

vendor/github.com/containerd/continuity/devices/devices_solaris.go

@@ -0,0 +1,18 @@
+// +build cgo
+
+package devices
+
+//#include <sys/mkdev.h>
+import "C"
+
+func getmajor(dev uint64) uint64 {
+	return uint64(C.major(C.dev_t(dev)))
+}
+
+func getminor(dev uint64) uint64 {
+	return uint64(C.minor(C.dev_t(dev)))
+}
+
+func makedev(major int, minor int) int {
+	return int(C.makedev(C.major_t(major), C.minor_t(minor)))
+}

vendor/github.com/containerd/continuity/devices/devices_unix.go

@@ -0,0 +1,55 @@
+// +build linux darwin freebsd solaris
+
+package devices
+
+import (
+	"fmt"
+	"os"
+	"syscall"
+)
+
+func DeviceInfo(fi os.FileInfo) (uint64, uint64, error) {
+	sys, ok := fi.Sys().(*syscall.Stat_t)
+	if !ok {
+		return 0, 0, fmt.Errorf("cannot extract device from os.FileInfo")
+	}
+
+	return getmajor(sys.Rdev), getminor(sys.Rdev), nil
+}
+
+// mknod provides a shortcut for syscall.Mknod
+func Mknod(p string, mode os.FileMode, maj, min int) error {
+	var (
+		m   = syscallMode(mode.Perm())
+		dev int
+	)
+
+	if mode&os.ModeDevice != 0 {
+		dev = makedev(maj, min)
+
+		if mode&os.ModeCharDevice != 0 {
+			m |= syscall.S_IFCHR
+		} else {
+			m |= syscall.S_IFBLK
+		}
+	} else if mode&os.ModeNamedPipe != 0 {
+		m |= syscall.S_IFIFO
+	}
+
+	return syscall.Mknod(p, m, dev)
+}
+
+// syscallMode returns the syscall-specific mode bits from Go's portable mode bits.
+func syscallMode(i os.FileMode) (o uint32) {
+	o |= uint32(i.Perm())
+	if i&os.ModeSetuid != 0 {
+		o |= syscall.S_ISUID
+	}
+	if i&os.ModeSetgid != 0 {
+		o |= syscall.S_ISGID
+	}
+	if i&os.ModeSticky != 0 {
+		o |= syscall.S_ISVTX
+	}
+	return
+}

vendor/github.com/containerd/continuity/devices/devices_windows.go

@@ -0,0 +1,11 @@
+package devices
+
+import (
+	"os"
+
+	"github.com/pkg/errors"
+)
+
+func DeviceInfo(fi os.FileInfo) (uint64, uint64, error) {
+	return 0, 0, errors.Wrap(ErrNotSupported, "cannot get device info on windows")
+}