Migrate from android::String path functions to std::filesystem

Bug: 295394788
Test: m checkbuild
Change-Id: I7efdc32872d00c066b9a874d774e5ecdc5e53722

2 files changed, 6 insertions, 4 deletions

diff --git a/cmds/cmd/Android.bp b/cmds/cmd/Android.bp
index c3d2601444..27ef78854c 100644
--- a/cmds/cmd/Android.bp
+++ b/cmds/cmd/Android.bp
@@ -27,6 +27,9 @@ cc_library_static {
         "libselinux",
         "libbinder",
     ],
+    whole_static_libs: [
+        "libc++fs",
+    ],
 
     cflags: [
         "-Wall",
diff --git a/cmds/cmd/cmd.cpp b/cmds/cmd/cmd.cpp
index b7273987b6..0ce7711574 100644
--- a/cmds/cmd/cmd.cpp
+++ b/cmds/cmd/cmd.cpp
@@ -27,6 +27,7 @@
 #include <utils/Mutex.h>
 #include <utils/Vector.h>
 
+#include <filesystem>
 #include <getopt.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -69,10 +70,8 @@ public:
     virtual int openFile(const String16& path, const String16& seLinuxContext,
             const String16& mode) {
         String8 path8(path);
-        char cwd[256];
-        getcwd(cwd, 256);
-        String8 fullPath(cwd);
-        fullPath.appendPath(path8);
+        auto fullPath = std::filesystem::current_path();
+        fullPath /= path8.c_str();
         if (!mActive) {
             mErrorLog << "Open attempt after active for: " << fullPath << endl;
             return -EPERM;