wutdevoptab: Fake st_ino value

libraries/wutdevoptab/devoptab_fsa_utils.cpp

@@ -73,10 +73,16 @@ time_t __wut_fsa_translate_time(FSTime timeValue) {
    return (timeValue /1000000) + EPOCH_DIFF_SECS(WIIU_FSTIME_EPOCH_YEAR);
 }
 
-void __wut_fsa_translate_stat(FSAClientHandle handle, FSStat* fsStat, struct stat* posStat) {
+static int __wut_fsa_info_fake_value_t = 0;
+void __wut_fsa_translate_stat(FSAClientHandle clientHandle, FSStat* fsStat, struct stat* posStat) {
    memset(posStat, 0, sizeof(struct stat));
-   posStat->st_ino = fsStat->entryId;
-   posStat->st_dev = (dev_t) handle;
+   posStat->st_dev = (dev_t) clientHandle;
+   // To have std::filesystem::copy support, we have to have unique st_ino values for two different files
+   // It's not really possible to get a unique value per file on Wii U, so instead we give everything a unique value.
+   // This means identifying the same file by st_ino would not work properly, but Cafe OS only allows us to open each file
+   // only once anyway.
+   // TODO: replace with hash of canonicalized path
+   posStat->st_ino = __wut_fsa_info_fake_value_t++;
    posStat->st_mode = __wut_fsa_translate_stat_mode(fsStat);
    posStat->st_nlink = 1;
    posStat->st_uid = fsStat->owner;