fs: add GetFileSystemAttribute cmd

nx/include/switch/services/fs.h

@@ -326,6 +326,38 @@ typedef enum {
     FsFileSystemQueryId_IsValidSignedSystemPartitionOnSdCard    = 2,  ///< [8.0.0+]
 } FsFileSystemQueryId;
 
+/// FileSystemAttribute
+typedef struct {
+    bool directory_name_length_max_has_value;
+    bool file_name_length_max_has_value;
+    bool directory_path_length_max_has_value;
+    bool file_path_length_max_has_value;
+    bool utf16_create_directory_path_length_max_has_value;
+    bool utf16_delete_directory_path_length_max_has_value;
+    bool utf16_rename_source_directory_path_length_max_has_value;
+    bool utf16_rename_destination_directory_path_length_max_has_value;
+    bool utf16_open_directory_path_length_max_has_value;
+    bool utf16_directory_name_length_max_has_value;
+    bool utf16_file_name_length_max_has_value;
+    bool utf16_directory_path_length_max_has_value;
+    bool utf16_file_path_length_max_has_value;
+    u8 reserved1[0x1B];
+    s32 directory_name_length_max;
+    s32 file_name_length_max;
+    s32 directory_path_length_max;
+    s32 file_path_length_max;
+    s32 utf16_create_directory_path_length_max;
+    s32 utf16_delete_directory_path_length_max;
+    s32 utf16_rename_source_directory_path_length_max;
+    s32 utf16_rename_destination_directory_path_length_max;
+    s32 utf16_open_directory_path_length_max;
+    s32 utf16_directory_name_length_max;
+    s32 utf16_file_name_length_max;
+    s32 utf16_directory_path_length_max;
+    s32 utf16_file_path_length_max;
+    u8 reserved2[0x64];
+} FsFileSystemAttribute;
+
 /// FsPriority
 typedef enum {
     FsPriority_Normal     = 0,
@@ -591,6 +623,7 @@ Result fsFsGetTotalSpace(FsFileSystem* fs, const char* path, s64* out);
 Result fsFsGetFileTimeStampRaw(FsFileSystem* fs, const char* path, FsTimeStampRaw *out); ///< [3.0.0+]
 Result fsFsCleanDirectoryRecursively(FsFileSystem* fs, const char* path); ///< [3.0.0+]
 Result fsFsQueryEntry(FsFileSystem* fs, void *out, size_t out_size, const void *in, size_t in_size, const char* path, FsFileSystemQueryId query_id); ///< [4.0.0+]
+Result fsFsGetFileSystemAttribute(FsFileSystem* fs, FsFileSystemAttribute *out); ///< [15.0.0+]
 void fsFsClose(FsFileSystem* fs);
 
 /// Uses \ref fsFsQueryEntry to set the archive bit on the specified absolute directory path.

nx/source/services/fs.c

@@ -937,6 +937,13 @@ Result fsFsQueryEntry(FsFileSystem* fs, void *out, size_t out_size, const void *
     );
 }
 
+Result fsFsGetFileSystemAttribute(FsFileSystem* fs, FsFileSystemAttribute *out) {
+    if (hosversionBefore(15,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    return _fsObjectDispatchOut(&fs->s, 16, *out);
+}
+
 Result fsFsSetConcatenationFileAttribute(FsFileSystem* fs, const char *path) {
     return fsFsQueryEntry(fs, NULL, 0, NULL, 0, path, FsFileSystemQueryId_SetConcatenationFileAttribute);
 }
@@ -1231,7 +1238,7 @@ Result fsDeviceOperatorGetGameCardDeviceCertificate(FsDeviceOperator* d, const F
         FsGameCardHandle handle;
         s64 buffer_size;
     } in = { *handle, size };
-    
+
     return _fsObjectDispatchIn(&d->s, 206, in,
         .buffer_attrs = { SfBufferAttr_HipcMapAlias | SfBufferAttr_Out },
         .buffers = { { dst, dst_size } });
@@ -1256,7 +1263,7 @@ Result fsDeviceOperatorGetGameCardDeviceId(FsDeviceOperator* d, void* dst, size_
 Result fsDeviceOperatorChallengeCardExistence(FsDeviceOperator* d, const FsGameCardHandle* handle, void* dst, size_t dst_size, void* seed, size_t seed_size, void* value, size_t value_size) {
     if (hosversionBefore(8,0,0))
         return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
-    
+
     return _fsObjectDispatchIn(&d->s, 219, *handle,
         .buffer_attrs = {
             SfBufferAttr_HipcMapAlias | SfBufferAttr_Out,