vendor: update moby/sys for darwin support

The mount package of darwin requires to retrive mountinfo to check if
the target of unmount if still mounted or not.  Thus pull the upstreamed
version of moby/sys to support this operation.

Signed-off-by: Hajime Tazaki <thehajime@gmail.com>

vendor/github.com/moby/sys/mountinfo/mounted_unix.go

@@ -1,4 +1,4 @@
-// +build linux freebsd,cgo openbsd,cgo
+// +build linux freebsd,cgo openbsd,cgo darwin,cgo
 
 package mountinfo
 

vendor/github.com/moby/sys/mountinfo/mountinfo_bsd.go

@@ -1,4 +1,4 @@
-// +build freebsd,cgo openbsd,cgo
+// +build freebsd,cgo openbsd,cgo darwin,cgo
 
 package mountinfo
 
@@ -21,7 +21,7 @@ func parseMountTable(filter FilterFunc) ([]*Info, error) {
 
 	count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT))
 	if count == 0 {
-		return nil, fmt.Errorf("Failed to call getmntinfo")
+		return nil, fmt.Errorf("failed to call getmntinfo")
 	}
 
 	var entries []C.struct_statfs

vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go

@@ -52,7 +52,7 @@ func GetMountsFromReader(r io.Reader, filter FilterFunc) ([]*Info, error) {
 		numFields := len(fields)
 		if numFields < 10 {
 			// should be at least 10 fields
-			return nil, fmt.Errorf("Parsing '%s' failed: not enough fields (%d)", text, numFields)
+			return nil, fmt.Errorf("parsing '%s' failed: not enough fields (%d)", text, numFields)
 		}
 
 		// separator field
@@ -67,7 +67,7 @@ func GetMountsFromReader(r io.Reader, filter FilterFunc) ([]*Info, error) {
 		for fields[sepIdx] != "-" {
 			sepIdx--
 			if sepIdx == 5 {
-				return nil, fmt.Errorf("Parsing '%s' failed: missing - separator", text)
+				return nil, fmt.Errorf("parsing '%s' failed: missing - separator", text)
 			}
 		}
 
@@ -75,46 +75,39 @@ func GetMountsFromReader(r io.Reader, filter FilterFunc) ([]*Info, error) {
 
 		p.Mountpoint, err = unescape(fields[4])
 		if err != nil {
-			return nil, fmt.Errorf("Parsing '%s' failed: mount point: %w", fields[4], err)
+			return nil, fmt.Errorf("parsing '%s' failed: mount point: %w", fields[4], err)
 		}
 		p.FSType, err = unescape(fields[sepIdx+1])
 		if err != nil {
-			return nil, fmt.Errorf("Parsing '%s' failed: fstype: %w", fields[sepIdx+1], err)
+			return nil, fmt.Errorf("parsing '%s' failed: fstype: %w", fields[sepIdx+1], err)
 		}
 		p.Source, err = unescape(fields[sepIdx+2])
 		if err != nil {
-			return nil, fmt.Errorf("Parsing '%s' failed: source: %w", fields[sepIdx+2], err)
+			return nil, fmt.Errorf("parsing '%s' failed: source: %w", fields[sepIdx+2], err)
 		}
 		p.VFSOptions = fields[sepIdx+3]
 
 		// ignore any numbers parsing errors, as there should not be any
 		p.ID, _ = strconv.Atoi(fields[0])
 		p.Parent, _ = strconv.Atoi(fields[1])
-		mm := strings.Split(fields[2], ":")
+		mm := strings.SplitN(fields[2], ":", 3)
 		if len(mm) != 2 {
-			return nil, fmt.Errorf("Parsing '%s' failed: unexpected minor:major pair %s", text, mm)
+			return nil, fmt.Errorf("parsing '%s' failed: unexpected major:minor pair %s", text, mm)
 		}
 		p.Major, _ = strconv.Atoi(mm[0])
 		p.Minor, _ = strconv.Atoi(mm[1])
 
 		p.Root, err = unescape(fields[3])
 		if err != nil {
-			return nil, fmt.Errorf("Parsing '%s' failed: root: %w", fields[3], err)
+			return nil, fmt.Errorf("parsing '%s' failed: root: %w", fields[3], err)
 		}
 
 		p.Options = fields[5]
 
 		// zero or more optional fields
-		switch {
-		case sepIdx == 6:
-			// zero, do nothing
-		case sepIdx == 7:
-			p.Optional = fields[6]
-		default:
-			p.Optional = strings.Join(fields[6:sepIdx-1], " ")
-		}
+		p.Optional = strings.Join(fields[6:sepIdx], " ")
 
-		// Run the filter after parsing all of the fields.
+		// Run the filter after parsing all fields.
 		var skip, stop bool
 		if filter != nil {
 			skip, stop = filter(p)

vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go

@@ -1,4 +1,4 @@
-// +build !windows,!linux,!freebsd,!openbsd freebsd,!cgo openbsd,!cgo
+// +build !windows,!linux,!freebsd,!openbsd,!darwin freebsd,!cgo openbsd,!cgo darwin,!cgo
 
 package mountinfo