vendor: bump c/common to v0.49.2-0.20220929111928-2d1b45ae2423

[NO NEW TESTS NEEDED]
[NO TESTS NEEDED]

Signed-off-by: Aditya R <arajan@redhat.com>

vendor/github.com/opencontainers/selinux/go-selinux/doc.go

@@ -9,6 +9,5 @@ Usage:
 	if selinux.EnforceMode() != selinux.Enforcing {
 		selinux.SetEnforceMode(selinux.Enforcing)
 	}
-
 */
 package selinux

vendor/github.com/opencontainers/selinux/go-selinux/label/label_linux.go

@@ -3,8 +3,6 @@ package label
 import (
 	"errors"
 	"fmt"
-	"os"
-	"os/user"
 	"strings"
 
 	"github.com/opencontainers/selinux/go-selinux"
@@ -113,50 +111,6 @@ func Relabel(path string, fileLabel string, shared bool) error {
 		return nil
 	}
 
-	exclude_paths := map[string]bool{
-		"/":           true,
-		"/bin":        true,
-		"/boot":       true,
-		"/dev":        true,
-		"/etc":        true,
-		"/etc/passwd": true,
-		"/etc/pki":    true,
-		"/etc/shadow": true,
-		"/home":       true,
-		"/lib":        true,
-		"/lib64":      true,
-		"/media":      true,
-		"/opt":        true,
-		"/proc":       true,
-		"/root":       true,
-		"/run":        true,
-		"/sbin":       true,
-		"/srv":        true,
-		"/sys":        true,
-		"/tmp":        true,
-		"/usr":        true,
-		"/var":        true,
-		"/var/lib":    true,
-		"/var/log":    true,
-	}
-
-	if home := os.Getenv("HOME"); home != "" {
-		exclude_paths[home] = true
-	}
-
-	if sudoUser := os.Getenv("SUDO_USER"); sudoUser != "" {
-		if usr, err := user.Lookup(sudoUser); err == nil {
-			exclude_paths[usr.HomeDir] = true
-		}
-	}
-
-	if path != "/" {
-		path = strings.TrimSuffix(path, "/")
-	}
-	if exclude_paths[path] {
-		return fmt.Errorf("SELinux relabeling of %s is not allowed", path)
-	}
-
 	if shared {
 		c, err := selinux.NewContext(fileLabel)
 		if err != nil {

vendor/github.com/opencontainers/selinux/go-selinux/label/label_stub.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package label

vendor/github.com/opencontainers/selinux/go-selinux/rchcon.go

@@ -1,3 +1,4 @@
+//go:build linux && go1.16
 // +build linux,go1.16
 
 package selinux
@@ -11,7 +12,18 @@ import (
 )
 
 func rchcon(fpath, label string) error {
+	fastMode := false
+	// If the current label matches the new label, assume
+	// other labels are correct.
+	if cLabel, err := lFileLabel(fpath); err == nil && cLabel == label {
+		fastMode = true
+	}
 	return pwalkdir.Walk(fpath, func(p string, _ fs.DirEntry, _ error) error {
+		if fastMode {
+			if cLabel, err := lFileLabel(fpath); err == nil && cLabel == label {
+				return nil
+			}
+		}
 		e := lSetFileLabel(p, label)
 		// Walk a file tree can race with removal, so ignore ENOENT.
 		if errors.Is(e, os.ErrNotExist) {

vendor/github.com/opencontainers/selinux/go-selinux/rchcon_go115.go

@@ -1,3 +1,4 @@
+//go:build linux && !go1.16
 // +build linux,!go1.16
 
 package selinux

vendor/github.com/opencontainers/selinux/go-selinux/selinux_linux.go

@@ -11,6 +11,7 @@ import (
 	"io/ioutil"
 	"math/big"
 	"os"
+	"os/user"
 	"path"
 	"path/filepath"
 	"strconv"
@@ -1072,21 +1073,6 @@ func copyLevel(src, dest string) (string, error) {
 	return tcon.Get(), nil
 }
 
-// Prevent users from relabeling system files
-func badPrefix(fpath string) error {
-	if fpath == "" {
-		return ErrEmptyPath
-	}
-
-	badPrefixes := []string{"/usr"}
-	for _, prefix := range badPrefixes {
-		if strings.HasPrefix(fpath, prefix) {
-			return fmt.Errorf("relabeling content in %s is not allowed", prefix)
-		}
-	}
-	return nil
-}
-
 // chcon changes the fpath file object to the SELinux label label.
 // If fpath is a directory and recurse is true, then chcon walks the
 // directory tree setting the label.
@@ -1097,12 +1083,70 @@ func chcon(fpath string, label string, recurse bool) error {
 	if label == "" {
 		return nil
 	}
-	if err := badPrefix(fpath); err != nil {
-		return err
+
+	exclude_paths := map[string]bool{
+		"/":           true,
+		"/bin":        true,
+		"/boot":       true,
+		"/dev":        true,
+		"/etc":        true,
+		"/etc/passwd": true,
+		"/etc/pki":    true,
+		"/etc/shadow": true,
+		"/home":       true,
+		"/lib":        true,
+		"/lib64":      true,
+		"/media":      true,
+		"/opt":        true,
+		"/proc":       true,
+		"/root":       true,
+		"/run":        true,
+		"/sbin":       true,
+		"/srv":        true,
+		"/sys":        true,
+		"/tmp":        true,
+		"/usr":        true,
+		"/var":        true,
+		"/var/lib":    true,
+		"/var/log":    true,
+	}
+
+	if home := os.Getenv("HOME"); home != "" {
+		exclude_paths[home] = true
+	}
+
+	if sudoUser := os.Getenv("SUDO_USER"); sudoUser != "" {
+		if usr, err := user.Lookup(sudoUser); err == nil {
+			exclude_paths[usr.HomeDir] = true
+		}
+	}
+
+	if fpath != "/" {
+		fpath = strings.TrimSuffix(fpath, "/")
+	}
+	if exclude_paths[fpath] {
+		return fmt.Errorf("SELinux relabeling of %s is not allowed", fpath)
 	}
 
 	if !recurse {
-		return setFileLabel(fpath, label)
+		err := lSetFileLabel(fpath, label)
+		if err != nil {
+			// Check if file doesn't exist, must have been removed
+			if errors.Is(err, os.ErrNotExist) {
+				return nil
+			}
+			// Check if current label is correct on disk
+			flabel, nerr := lFileLabel(fpath)
+			if nerr == nil && flabel == label {
+				return nil
+			}
+			// Check if file doesn't exist, must have been removed
+			if errors.Is(nerr, os.ErrNotExist) {
+				return nil
+			}
+			return err
+		}
+		return nil
 	}
 
 	return rchcon(fpath, label)

vendor/github.com/opencontainers/selinux/go-selinux/selinux_stub.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package selinux