bump c/common to v0.44.0

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

vendor/github.com/containers/common/pkg/config/config.go

@@ -167,7 +167,7 @@ type ContainersConfig struct {
 
 	// RootlessNetworking depicts the "kind" of networking for rootless
 	// containers.  Valid options are `slirp4netns` and `cni`. Default is
-	// `slirp4netns`
+	// `slirp4netns` on Linux, and `cni` on non-Linux OSes.
 	RootlessNetworking string `toml:"rootless_networking,omitempty"`
 
 	// SeccompProfile is the seccomp.json profile path which is used as the
@@ -234,6 +234,10 @@ type EngineConfig struct {
 	// EventsLogger determines where events should be logged.
 	EventsLogger string `toml:"events_logger,omitempty"`
 
+	// HelperBinariesDir is a list of directories which are used to search for
+	// helper binaries.
+	HelperBinariesDir []string `toml:"helper_binaries_dir"`
+
 	// configuration files. When the same filename is present in in
 	// multiple directories, the file in the directory listed last in
 	// this slice takes precedence.
@@ -1126,3 +1130,21 @@ func (c *Config) ActiveDestination() (uri, identity string, err error) {
 	}
 	return "", "", errors.New("no service destination configured")
 }
+
+// FindHelperBinary will search the given binary name in the configured directories.
+// If searchPATH is set to true it will also search in $PATH.
+func (c *Config) FindHelperBinary(name string, searchPATH bool) (string, error) {
+	for _, path := range c.Engine.HelperBinariesDir {
+		fullpath := filepath.Join(path, name)
+		if fi, err := os.Stat(fullpath); err == nil && fi.Mode().IsRegular() {
+			return fullpath, nil
+		}
+	}
+	if searchPATH {
+		return exec.LookPath(name)
+	}
+	if len(c.Engine.HelperBinariesDir) == 0 {
+		return "", errors.Errorf("could not find %q because there are no helper binary directories configured", name)
+	}
+	return "", errors.Errorf("could not find %q in one of %v", name, c.Engine.HelperBinariesDir)
+}