validation: add args validation for process

Signed-off-by: Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>

Author: Ma Shimiao

validate.go

@@ -45,9 +45,9 @@ var (
 )
 
 var bundleValidateCommand = cli.Command{
-	Name:  "validate",
-	Usage: "validate a OCI bundle",
-	Flags: bundleValidateFlags,
+	Name:   "validate",
+	Usage:  "validate a OCI bundle",
+	Flags:  bundleValidateFlags,
 	Before: before,
 	Action: func(context *cli.Context) error {
 		inputPath := context.String("path")
@@ -170,6 +170,17 @@ func checkProcess(process rspec.Process, rootfs string) {
 		}
 	}
 
+	if len(process.Args) < 1 {
+		logrus.Fatalf("args should not be empty")
+	}
+	command := process.Args[0]
+	if filepath.IsAbs(command) {
+		cmdPath := path.Join(rootfs, command)
+		if _, err := os.Stat(cmdPath); err != nil {
+			logrus.Fatalf("Cannot find the command path %q", cmdPath)
+		}
+	}
+
 	for index := 0; index < len(process.Capabilities); index++ {
 		capability := process.Capabilities[index]
 		if !capValid(capability) {