internal/telemetry: remove DetectLibDl

ddtrace/tracer/telemetry.go

@@ -7,10 +7,8 @@ package tracer
 
 import (
 	"fmt"
-	"runtime"
 	"strings"
 
-	"gopkg.in/DataDog/dd-trace-go.v1/internal/osinfo"
 	"gopkg.in/DataDog/dd-trace-go.v1/internal/telemetry"
 )
 
@@ -102,11 +100,5 @@ func startTelemetry(c *config) {
 			telemetryConfigs = append(telemetryConfigs, telemetry.Configuration{Name: "orchestrion_" + k, Value: v})
 		}
 	}
-	if runtime.GOOS == "linux" {
-		if path := osinfo.DetectLibDl("/"); path != "" {
-			// Help collect data on the libdl path for Linux
-			telemetryConfigs = append(telemetryConfigs, telemetry.Configuration{Name: "osinfo_libdl_path", Value: path})
-		}
-	}
 	telemetry.GlobalClient.ProductChange(telemetry.NamespaceTracers, true, telemetryConfigs)
 }

internal/appsec/telemetry.go

@@ -9,7 +9,6 @@ import (
 	"runtime"
 
 	waf "github.com/DataDog/go-libddwaf/v2"
-	"gopkg.in/DataDog/dd-trace-go.v1/internal/osinfo"
 	"gopkg.in/DataDog/dd-trace-go.v1/internal/telemetry"
 )
 
@@ -44,9 +43,6 @@ func newAppsecTelemetry() *appsecTelemetry {
 	configs := make([]telemetry.Configuration, len(staticConfigs)+1, len(staticConfigs)+2)
 	configs[0] = telemetry.Configuration{Name: "cgo_enabled", Value: cgoEnabled}
 	copy(configs[1:], staticConfigs)
-	if runtime.GOOS == "linux" {
-		configs = append(configs, telemetry.Configuration{Name: "osinfo_libdl_path", Value: osinfo.DetectLibDl("/")})
-	}
 
 	return &appsecTelemetry{
 		configs: configs,

internal/osinfo/osinfo.go

@@ -6,14 +6,6 @@
 // Package osinfo provides information about the current operating system release
 package osinfo
 
-import (
-	"io/fs"
-	"os"
-	"path"
-	"runtime"
-	"sync"
-)
-
 // OSName returns the name of the operating system, including the distribution
 // for Linux when possible.
 func OSName() string {
@@ -27,49 +19,3 @@ func OSVersion() string {
 	// call out to OS-specific implementation
 	return osVersion()
 }
-
-var (
-	detectLibDlOnce sync.Once
-	detectedLibDl   string
-)
-
-// DetectLibDl returns the path to libdl.so if present under one of the
-// traditional library paths (under `/lib`, `/lib64`, `/usr/lib`, etc...). This
-// is a no-op on platforms other than Linux. The lookup is done exactly once,
-// and the result will be re-used by subsequent calls.
-func DetectLibDl(root string) string {
-	if runtime.GOOS != "linux" {
-		return ""
-	}
-
-	detectLibDlOnce.Do(func() { detectedLibDl = detectLibDl(root, os.DirFS(root)) })
-	return detectedLibDl
-}
-
-// detectLibDl is the testable implementation of DetectLibDl.
-func detectLibDl(root string, fsys fs.FS) string {
-	prefixes := [...]string{
-		"lib",
-		"lib64",
-		"usr/lib",
-		"usr/lib64",
-		"usr/local/lib",
-		"usr/local/lib64",
-	}
-
-	var result string
-	for _, prefix := range prefixes {
-		_ = fs.WalkDir(fsys, prefix, func(path string, dir fs.DirEntry, err error) error {
-			if dir == nil || dir.IsDir() || dir.Name() != "libdl.so.2" {
-				return nil
-			}
-			// Found it!
-			result = path
-			return fs.SkipDir // TODO: fs.SkipAll once 1.20+ is the minimum supported Go version
-		})
-		if result != "" {
-			return path.Join(root, result)
-		}
-	}
-	return ""
-}