Added support for getting file timestamps via 3.0.0+ fsFsGetFileTimeStampRaw, *stat() timestamps are now set when fsFsGetFileTimeStampRaw is successful. This is now used in fsdev_open() for supporting fstat. The sysver is now checked in fsFsCleanDirectoryRecursively(). Closes #204.

nx/include/switch/services/fs.h

@@ -83,6 +83,15 @@ typedef struct
     u8 unk_x38[0x28];   ///< Unknown. Usually zeros?
 } PACKED FsSaveDataInfo;
 
+typedef struct
+{
+    u64 created;  ///< POSIX timestamp.
+    u64 modified; ///< POSIX timestamp.
+    u64 accessed; ///< POSIX timestamp.
+    u8 is_valid;  ///< 0x1 when the timestamps are set.
+    u8 padding[7];
+} PACKED FsTimeStampRaw;
+
 typedef enum {
     ENTRYTYPE_DIR = 0,
     ENTRYTYPE_FILE = 1
@@ -211,11 +220,12 @@ Result fsFsOpenDirectory(FsFileSystem* fs, const char* path, int flags, FsDir* o
 Result fsFsCommit(FsFileSystem* fs);
 Result fsFsGetFreeSpace(FsFileSystem* fs, const char* path, u64* out);
 Result fsFsGetTotalSpace(FsFileSystem* fs, const char* path, u64* out);
-Result fsFsCleanDirectoryRecursively(FsFileSystem* fs, const char* path);
+Result fsFsGetFileTimeStampRaw(FsFileSystem* fs, const char* path, FsTimeStampRaw *out);/// 3.0.0+
-Result fsFsQueryEntry(FsFileSystem* fs, void *out, size_t out_size, const void *in, size_t in_size, const char* path, FsFileSystemQueryType query_type);
+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, FsFileSystemQueryType query_type);/// 4.0.0+
 void fsFsClose(FsFileSystem* fs);
 
-/// Uses fsFsQueryEntry to set the archive bit on the specified absolute directory path.
+/// Uses \ref fsFsQueryEntry to set the archive bit on the specified absolute directory path.
 /// This will cause HOS to treat the directory as if it were a file containing the directory's concatenated contents.
 Result fsFsSetArchiveBit(FsFileSystem* fs, const char *path);
 

nx/source/runtime/devices/fs_dev.c

@@ -55,6 +55,7 @@ typedef struct
   FsFile fd;
   int    flags;  /*! Flags used in open(2) */
   u64    offset; /*! Current file offset */
+  FsTimeStampRaw timestamps;
 } fsdev_file_t;
 
 /*! fsdev devoptab */
@@ -581,6 +582,10 @@ fsdev_open(struct _reent *r,
     file->fd     = fd;
     file->flags  = (flags & (O_ACCMODE|O_APPEND|O_SYNC));
     file->offset = 0;
+
+    memset(&file->timestamps, 0, sizeof(file->timestamps));
+    rc = fsFsGetFileTimeStampRaw(&device->fs, fs_path, &file->timestamps);//Result can be ignored since output is only set on success, etc.
+
     return 0;
   }
 
@@ -924,6 +929,14 @@ fsdev_fstat(struct _reent *r,
     st->st_size = (off_t)size;
     st->st_nlink = 1;
     st->st_mode = S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
+
+    if(file->timestamps.is_valid)
+    {
+      st->st_ctime = file->timestamps.created;
+      st->st_mtime = file->timestamps.modified;
+      st->st_atime = file->timestamps.accessed;
+    }
+
     return 0;
   }
 
@@ -948,8 +961,10 @@ fsdev_stat(struct _reent *r,
   FsFile  fd;
   FsDir   fdir;
   Result  rc;
+  int     ret=0;
   char    fs_path[FS_MAX_PATH];
   fsdev_fsdevice *device = NULL;
+  FsTimeStampRaw timestamps = {0};
   FsEntryType type;
 
   if(fsdev_getfspath(r, file, &device, fs_path)==-1)
@@ -974,10 +989,21 @@ fsdev_stat(struct _reent *r,
       if(R_SUCCEEDED(rc = fsFsOpenFile(&device->fs, fs_path, FS_OPEN_READ, &fd)))
       {
         fsdev_file_t tmpfd = { .fd = fd };
-        rc = fsdev_fstat(r, &tmpfd, st);
+        ret = fsdev_fstat(r, &tmpfd, st);
         fsFileClose(&fd);
 
-        return rc;
+        if(ret==0)
+        {
+          rc = fsFsGetFileTimeStampRaw(&device->fs, fs_path, &timestamps);
+          if(R_SUCCEEDED(rc) && timestamps.is_valid)
+          {
+            st->st_ctime = timestamps.created;
+            st->st_mtime = timestamps.modified;
+            st->st_atime = timestamps.accessed;
+          }
+        }
+
+        return ret;
       }
     }
     else

nx/source/services/fs.c

@@ -975,6 +975,9 @@ Result fsFsGetTotalSpace(FsFileSystem* fs, const char* path, u64* out) {
 }
 
 Result fsFsCleanDirectoryRecursively(FsFileSystem* fs, const char* path) {
+    if (!kernelAbove300())
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
     IpcCommand c;
     ipcInitialize(&c);
     ipcAddSendStatic(&c, path, FS_MAX_PATH, 0);
@@ -1007,6 +1010,48 @@ Result fsFsCleanDirectoryRecursively(FsFileSystem* fs, const char* path) {
     return rc;
 }
 
+Result fsFsGetFileTimeStampRaw(FsFileSystem* fs, const char* path, FsTimeStampRaw *out) {
+    if (!kernelAbove300())
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    char send_path[FS_MAX_PATH] = {0};
+    strncpy(send_path, path, sizeof(send_path)-1);
+
+    IpcCommand c;
+    ipcInitialize(&c);
+    ipcAddSendStatic(&c, send_path, sizeof(send_path), 0);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+    } *raw;
+
+    raw = serviceIpcPrepareHeader(&fs->s, &c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 14;
+
+    Result rc = serviceIpcDispatch(&fs->s);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        struct {
+            u64 magic;
+            u64 result;
+            FsTimeStampRaw out;
+        } *resp;
+
+        serviceIpcParse(&fs->s, &r, sizeof(*resp));
+        resp = r.Raw;
+
+        rc = resp->result;
+
+        if (R_SUCCEEDED(rc) && out) *out = resp->out;
+    }
+
+    return rc;
+}
+
 Result fsFsQueryEntry(FsFileSystem* fs, void *out, size_t out_size, const void *in, size_t in_size, const char* path, FsFileSystemQueryType query_type) {
     if (!kernelAbove400())
         return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);