fuse: add benchmarking support for FUSE

This change adds the following:
-  Add support for containerizing syscall tests for FUSE
-  Mount tmpfs in the container so we can run benchmarks against it
-  Run the server in a background process
-  benchmarks for fuse syscall

Co-authored-by: Ridwan Sharif <ridwanmsharif@google.com>

2 files changed, 30 insertions, 0 deletions

diff --git a/pkg/test/dockerutil/container.go b/pkg/test/dockerutil/container.go
index 64d17f661..727be26b2 100644
--- a/pkg/test/dockerutil/container.go
+++ b/pkg/test/dockerutil/container.go
@@ -136,6 +136,11 @@ func MakeNativeContainer(ctx context.Context, logger testutil.Logger) *Container
 	}
 }
 
+// Runtime returns the runtime of the container.
+func (c *Container) Runtime() string {
+	return c.runtime
+}
+
 // AddProfile adds a profile to this container.
 func (c *Container) AddProfile(p Profile) {
 	c.profiles = append(c.profiles, p)
@@ -541,3 +546,8 @@ func (c *Container) CleanUp(ctx context.Context) {
 	// Forget all mounts.
 	c.mounts = nil
 }
+
+// CopyErr returns the error that happened during copy.
+func (c *Container) CopyErr() error {
+	return c.copyErr
+}
diff --git a/pkg/test/dockerutil/dockerutil.go b/pkg/test/dockerutil/dockerutil.go
index 7027df1a5..a2d7e8c85 100644
--- a/pkg/test/dockerutil/dockerutil.go
+++ b/pkg/test/dockerutil/dockerutil.go
@@ -121,6 +121,26 @@ func UsingVFS2() (bool, error) {
 	return false, nil
 }
 
+// UsingFUSE returns true if the 'runtime' has the fuse flag set.
+func UsingFUSE() (bool, error) {
+	rMap, err := runtimeMap()
+	if err != nil {
+		return false, err
+	}
+
+	list, ok := rMap["runtimeArgs"].([]interface{})
+	if !ok {
+		return false, fmt.Errorf("unexpected format: %v", rMap)
+	}
+
+	for _, element := range list {
+		if element == "--fuse" {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
 func runtimeMap() (map[string]interface{}, error) {
 	// Read the configuration data; the file must exist.
 	configBytes, err := ioutil.ReadFile(*config)