Set linux credential store path.

PiperOrigin-RevId: 791932855

internal/platform/implementation/g3/BUILD

@@ -15,6 +15,16 @@ load("@rules_cc//cc:cc_library.bzl", "cc_library")
 # limitations under the License.
 licenses(["notice"])
 
+cc_library(
+    name = "linux_path_util",
+    hdrs = ["linux_path_util.h"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//internal/base:file_path",
+        "//internal/base:files",
+    ],
+)
+
 cc_library(
     name = "types",
     testonly = True,
@@ -37,6 +47,7 @@ cc_library(
     ],
     visibility = ["//visibility:private"],
     deps = [
+        ":linux_path_util",
         ":preferences_repository",
         "//internal/base:file_path",
         "//internal/base:files",

internal/platform/implementation/g3/device_info.h

@@ -15,7 +15,6 @@
 #ifndef PLATFORM_IMPL_G3_DEVICE_INFO_H_
 #define PLATFORM_IMPL_G3_DEVICE_INFO_H_
 
-#include <cstdlib>
 #include <functional>
 #include <optional>
 #include <string>
@@ -26,6 +25,7 @@
 #include "internal/base/file_path.h"
 #include "internal/base/files.h"
 #include "internal/platform/implementation/device_info.h"
+#include "internal/platform/implementation/g3/linux_path_util.h"
 
 namespace nearby {
 namespace g3 {
@@ -49,14 +49,7 @@ class DeviceInfo : public api::DeviceInfo {
   }
 
   std::optional<FilePath> GetLocalAppDataPath() const override {
-    const char* home_dir = getenv("HOME");
-    if (home_dir == nullptr) {
-      return Files::GetTemporaryDirectory();
-    }
-    // Yhis matches the .NET LocalAppData directory on Linux.
-    return FilePath(home_dir)
-        .append(FilePath(".local"))
-        .append(FilePath("share"));
+    return GetAppDataPath();
   }
 
   std::optional<FilePath> GetCommonAppDataPath() const override {

internal/platform/implementation/g3/linux_path_util.h

@@ -0,0 +1,36 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_G3_LINUX_PATH_UTIL_H_
+#define THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_G3_LINUX_PATH_UTIL_H_
+
+#include <cstdlib>
+
+#include "internal/base/file_path.h"
+#include "internal/base/files.h"
+
+namespace nearby::g3 {
+
+inline FilePath GetAppDataPath() {
+  const char* home_dir = getenv("HOME");
+  if (home_dir == nullptr) {
+    return Files::GetTemporaryDirectory();
+  }
+  // This matches the .NET LocalAppData directory on Linux.
+  return FilePath(home_dir).append(FilePath(".local/share"));
+}
+
+}  // namespace nearby::g3
+
+#endif  // THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_G3_LINUX_PATH_UTIL_H_