diff --git a/src/lv_draw/lv_img_decoder.c b/src/lv_draw/lv_img_decoder.c
index e52a170b5..5c1144124 100644
--- a/src/lv_draw/lv_img_decoder.c
+++ b/src/lv_draw/lv_img_decoder.c
@@ -277,13 +277,12 @@ lv_res_t lv_img_decoder_built_in_info(lv_img_decoder_t * decoder, const void * s
     }
 #if LV_USE_FILESYSTEM
     else if(src_type == LV_IMG_SRC_FILE) {
-        lv_fs_file_t file;
-        lv_fs_res_t res;
+        lv_fs_file_t * f;
         uint32_t rn;
-        res = lv_fs_open(&file, src, LV_FS_MODE_RD);
-        if(res == LV_FS_RES_OK) {
-            res = lv_fs_read(&file, header, sizeof(lv_img_header_t), &rn);
-            lv_fs_close(&file);
+        f = lv_fs_open(src, LV_FS_MODE_RD);
+        if(f) {
+            lv_fs_res_t res = lv_fs_read(f, header, sizeof(lv_img_header_t), &rn);
+            lv_fs_close(f);
             if(res != LV_FS_RES_OK || rn != sizeof(lv_img_header_t)) {
                 LV_LOG_WARN("Image get info get read file header");
                 return LV_RES_INV;
@@ -325,9 +324,8 @@ lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder
         /*Support only "*.bin" files*/
         if(strcmp(lv_fs_get_ext(dsc->src), "bin")) return LV_RES_INV;
 
-        lv_fs_file_t f;
-        lv_fs_res_t res = lv_fs_open(&f, dsc->src, LV_FS_MODE_RD);
-        if(res != LV_FS_RES_OK) {
+        lv_fs_file_t * f = lv_fs_open(dsc->src, LV_FS_MODE_RD);
+        if(f == NULL) {
             LV_LOG_WARN("Built-in image decoder can't open the file");
             return LV_RES_INV;
         }
@@ -344,16 +342,7 @@ lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder
         }
 
         lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
-        user_data->f = lv_mem_alloc(sizeof(f));
-        LV_ASSERT_MEM(user_data->f);
-        if(user_data->f == NULL) {
-            LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
-            lv_img_decoder_built_in_close(decoder, dsc);
-            return LV_RES_INV;
-        }
-
-        _lv_memcpy_small(user_data->f, &f, sizeof(f));
-
+        user_data->f = f;
 #else
         LV_LOG_WARN("Image built-in decoder cannot read file because LV_USE_FILESYSTEM = 0");
         return LV_RES_INV;
@@ -415,7 +404,7 @@ lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder
         if(dsc->src_type == LV_IMG_SRC_FILE) {
             /*Read the palette from file*/
 #if LV_USE_FILESYSTEM
-            lv_fs_seek(user_data->f, 4); /*Skip the header*/
+            lv_fs_seek(user_data->f, 4, LV_FS_SEEK_SET); /*Skip the header*/
             lv_color32_t cur_color;
             uint32_t i;
             for(i = 0; i < palette_size; i++) {
@@ -525,7 +514,6 @@ void lv_img_decoder_built_in_close(lv_img_decoder_t * decoder, lv_img_decoder_ds
 #if LV_USE_FILESYSTEM
         if(user_data->f) {
             lv_fs_close(user_data->f);
-            lv_mem_free(user_data->f);
         }
 #endif
         if(user_data->palette) lv_mem_free(user_data->palette);
@@ -552,7 +540,7 @@ static lv_res_t lv_img_decoder_built_in_line_true_color(lv_img_decoder_dsc_t * d
 
     uint32_t pos = ((y * dsc->header.w + x) * px_size) >> 3;
     pos += 4; /*Skip the header*/
-    res = lv_fs_seek(user_data->f, pos);
+    res = lv_fs_seek(user_data->f, pos, LV_FS_SEEK_SET);
     if(res != LV_FS_RES_OK) {
         LV_LOG_WARN("Built-in image decoder seek failed");
         return LV_RES_INV;
@@ -654,7 +642,7 @@ static lv_res_t lv_img_decoder_built_in_line_alpha(lv_img_decoder_dsc_t * dsc, l
     }
     else {
 #if LV_USE_FILESYSTEM
-        lv_fs_seek(user_data->f, ofs + 4); /*+4 to skip the header*/
+        lv_fs_seek(user_data->f, ofs + 4, LV_FS_SEEK_SET); /*+4 to skip the header*/
         lv_fs_read(user_data->f, fs_buf, w, NULL);
         data_tmp = fs_buf;
 #else
@@ -740,7 +728,7 @@ static lv_res_t lv_img_decoder_built_in_line_indexed(lv_img_decoder_dsc_t * dsc,
     }
     else {
 #if LV_USE_FILESYSTEM
-        lv_fs_seek(user_data->f, ofs + 4); /*+4 to skip the header*/
+        lv_fs_seek(user_data->f, ofs + 4, LV_FS_SEEK_SET); /*+4 to skip the header*/
         lv_fs_read(user_data->f, fs_buf, w, NULL);
         data_tmp = fs_buf;
 #else
diff --git a/src/lv_font/lv_font_loader.c b/src/lv_font/lv_font_loader.c
index 7cde8370d..8c45611ce 100644
--- a/src/lv_font/lv_font_loader.c
+++ b/src/lv_font/lv_font_loader.c
@@ -93,11 +93,11 @@ lv_font_t * lv_font_load(const char * font_name)
     lv_font_t * font = lv_mem_alloc(sizeof(lv_font_t));
     memset(font, 0, sizeof(lv_font_t));
 
-    lv_fs_file_t file;
-    lv_fs_res_t res = lv_fs_open(&file, font_name, LV_FS_MODE_RD);
+    lv_fs_file_t * file;
+    file = lv_fs_open(font_name, LV_FS_MODE_RD);
 
-    if(res == LV_FS_RES_OK) {
-        success = lvgl_load_font(&file, font);
+    if(file) {
+        success = lvgl_load_font(file, font);
     }
 
     if(!success) {
@@ -111,7 +111,7 @@ lv_font_t * lv_font_load(const char * font_name)
         font = NULL;
     }
 
-    lv_fs_close(&file);
+    lv_fs_close(file);
 
     return font;
 }
@@ -234,7 +234,7 @@ static int read_bits_signed(bit_iterator_t * it, int n_bits, lv_fs_res_t * res)
 
 static int read_label(lv_fs_file_t * fp, int start, const char * label)
 {
-    lv_fs_seek(fp, start);
+    lv_fs_seek(fp, start, LV_FS_SEEK_SET);
 
     uint32_t length;
     char buf[4];
@@ -265,7 +265,7 @@ static bool load_cmaps_tables(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_ds
     }
 
     for(unsigned int i = 0; i < font_dsc->cmap_num; ++i) {
-        lv_fs_res_t res = lv_fs_seek(fp, cmaps_start + cmap_table[i].data_offset);
+        lv_fs_res_t res = lv_fs_seek(fp, cmaps_start + cmap_table[i].data_offset, LV_FS_SEEK_SET);
         if(res != LV_FS_RES_OK) {
             return false;
         }
@@ -379,7 +379,7 @@ static int32_t load_glyph(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc,
     for(unsigned int i = 0; i < loca_count; ++i) {
         lv_font_fmt_txt_glyph_dsc_t * gdsc = &glyph_dsc[i];
 
-        lv_fs_res_t res = lv_fs_seek(fp, start + glyph_offset[i]);
+        lv_fs_res_t res = lv_fs_seek(fp, start + glyph_offset[i], LV_FS_SEEK_SET);
         if(res != LV_FS_RES_OK) {
             return -1;
         }
@@ -445,7 +445,7 @@ static int32_t load_glyph(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc,
     cur_bmp_size = 0;
 
     for(unsigned int i = 1; i < loca_count; ++i) {
-        lv_fs_res_t res = lv_fs_seek(fp, start + glyph_offset[i]);
+        lv_fs_res_t res = lv_fs_seek(fp, start + glyph_offset[i], LV_FS_SEEK_SET);
         if(res != LV_FS_RES_OK) {
             return -1;
         }
diff --git a/src/lv_misc/lv_fs.c b/src/lv_misc/lv_fs.c
index 475fcab52..fbf6e7de0 100644
--- a/src/lv_misc/lv_fs.c
+++ b/src/lv_misc/lv_fs.c
@@ -83,51 +83,52 @@ bool lv_fs_is_ready(char letter)
  * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-lv_fs_res_t lv_fs_open(lv_fs_file_t * file_p, const char * path, lv_fs_mode_t mode)
+void * lv_fs_open(const char * path, lv_fs_mode_t mode)
 {
-    file_p->drv    = NULL;
-    file_p->file_d = NULL;
-
-    if(path == NULL) return LV_FS_RES_INV_PARAM;
-
-    char letter = path[0];
-
-    file_p->drv = lv_fs_get_drv(letter);
-
-    if(file_p->drv == NULL) {
-        file_p->file_d = NULL;
-        return LV_FS_RES_NOT_EX;
+    if(path == NULL) {
+        LV_LOG_WARN("Can't open file: path is NULL");
+        return NULL;
     }
 
-    if(file_p->drv->ready_cb != NULL) {
-        if(file_p->drv->ready_cb(file_p->drv) == false) {
-            file_p->drv    = NULL;
-            file_p->file_d = NULL;
-            return LV_FS_RES_HW_ERR;
+    char letter = path[0];
+    lv_fs_drv_t * drv = lv_fs_get_drv(letter);
+
+
+    if(drv == NULL) {
+        LV_LOG_WARN("Can't open file (%s): unknown driver letter", path);
+        return NULL;
+    }
+
+    if(drv->ready_cb) {
+        if(drv->ready_cb(drv) == false) {
+            LV_LOG_WARN("Can't open file (%s): driver not ready", path);
+            return NULL;
         }
     }
 
-    file_p->file_d = lv_mem_alloc(file_p->drv->file_size);
-    LV_ASSERT_MEM(file_p->file_d);
-    if(file_p->file_d == NULL) {
-        file_p->drv = NULL;
-        return LV_FS_RES_OUT_OF_MEM; /* Out of memory */
+    if(drv->open_cb == NULL) {
+        LV_LOG_WARN("Can't open file (%s): open function not exists", path);
+        return NULL;
     }
 
-    if(file_p->drv->open_cb == NULL) {
-        return LV_FS_RES_NOT_IMP;
+    lv_fs_file_t * file_p = lv_mem_alloc(sizeof(lv_fs_file_t));
+    if(file_p == NULL) {
+        LV_LOG_WARN("Can't open file (%s): out of memory", path);
+        return NULL;
     }
 
+    file_p->drv = drv;
+    file_p->file_d = NULL;
+
     const char * real_path = lv_fs_get_real_path(path);
-    lv_fs_res_t res        = file_p->drv->open_cb(file_p->drv, file_p->file_d, real_path, mode);
+    file_p->file_d = drv->open_cb(drv, real_path, mode);
 
-    if(res != LV_FS_RES_OK) {
-        lv_mem_free(file_p->file_d);
-        file_p->file_d = NULL;
-        file_p->drv    = NULL;
+    if(file_p->file_d == NULL || file_p->file_d == (void*)(-1)) {
+        lv_mem_free(file_p);
+        return NULL;
     }
 
-    return res;
+    return file_p;
 }
 
 /**
@@ -147,10 +148,7 @@ lv_fs_res_t lv_fs_close(lv_fs_file_t * file_p)
 
     lv_fs_res_t res = file_p->drv->close_cb(file_p->drv, file_p->file_d);
 
-    lv_mem_free(file_p->file_d); /*Clean up*/
-    file_p->file_d = NULL;
-    file_p->drv    = NULL;
-    file_p->file_d = NULL;
+    lv_mem_free(file_p); /*Clean up*/
 
     return res;
 }
@@ -234,7 +232,7 @@ lv_fs_res_t lv_fs_write(lv_fs_file_t * file_p, const void * buf, uint32_t btw, u
  * @param pos the new position expressed in bytes index (0: start of file)
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-lv_fs_res_t lv_fs_seek(lv_fs_file_t * file_p, uint32_t pos)
+lv_fs_res_t lv_fs_seek(lv_fs_file_t * file_p, uint32_t pos, lv_fs_whence_t whence)
 {
     if(file_p->drv == NULL) {
         return LV_FS_RES_INV_PARAM;
@@ -244,7 +242,7 @@ lv_fs_res_t lv_fs_seek(lv_fs_file_t * file_p, uint32_t pos)
         return LV_FS_RES_NOT_IMP;
     }
 
-    lv_fs_res_t res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, pos);
+    lv_fs_res_t res = file_p->drv->seek_cb(file_p->drv, file_p->file_d, pos, whence);
 
     return res;
 }
diff --git a/src/lv_misc/lv_fs.h b/src/lv_misc/lv_fs.h
index 5000d8c20..00eebadc1 100644
--- a/src/lv_misc/lv_fs.h
+++ b/src/lv_misc/lv_fs.h
@@ -52,7 +52,7 @@ enum {
 typedef uint8_t lv_fs_res_t;
 
 /**
- * Filesystem mode.
+ * File open mode.
  */
 enum {
     LV_FS_MODE_WR = 0x01,
@@ -60,18 +60,28 @@ enum {
 };
 typedef uint8_t lv_fs_mode_t;
 
+
+/**
+ * Seek modes.
+ */
+enum {
+    LV_FS_SEEK_SET = 0x00,
+    LV_FS_SEEK_CUR = 0x01,
+    LV_FS_SEEK_END = 0x02,
+};
+typedef uint8_t lv_fs_whence_t;
+
 typedef struct _lv_fs_drv_t {
     char letter;
-    uint16_t file_size;
     uint16_t rddir_size;
     bool (*ready_cb)(struct _lv_fs_drv_t * drv);
 
-    lv_fs_res_t (*open_cb)(struct _lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode);
+    void * (*open_cb)(struct _lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
     lv_fs_res_t (*close_cb)(struct _lv_fs_drv_t * drv, void * file_p);
     lv_fs_res_t (*remove_cb)(struct _lv_fs_drv_t * drv, const char * fn);
     lv_fs_res_t (*read_cb)(struct _lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
     lv_fs_res_t (*write_cb)(struct _lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
-    lv_fs_res_t (*seek_cb)(struct _lv_fs_drv_t * drv, void * file_p, uint32_t pos);
+    lv_fs_res_t (*seek_cb)(struct _lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
     lv_fs_res_t (*tell_cb)(struct _lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
     lv_fs_res_t (*trunc_cb)(struct _lv_fs_drv_t * drv, void * file_p);
     lv_fs_res_t (*size_cb)(struct _lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
@@ -143,7 +153,7 @@ bool lv_fs_is_ready(char letter);
  * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-lv_fs_res_t lv_fs_open(lv_fs_file_t * file_p, const char * path, lv_fs_mode_t mode);
+void * lv_fs_open(const char * path, lv_fs_mode_t mode);
 
 /**
  * Close an already opened file
@@ -185,7 +195,7 @@ lv_fs_res_t lv_fs_write(lv_fs_file_t * file_p, const void * buf, uint32_t btw, u
  * @param pos the new position expressed in bytes index (0: start of file)
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-lv_fs_res_t lv_fs_seek(lv_fs_file_t * file_p, uint32_t pos);
+lv_fs_res_t lv_fs_seek(lv_fs_file_t * file_p, uint32_t pos, lv_fs_whence_t whence);
 
 /**
  * Give the position of the read write pointer
diff --git a/tests/lv_test_core/lv_test_font_loader.c b/tests/lv_test_core/lv_test_font_loader.c
index 56a42c2d8..6cb64866a 100644
--- a/tests/lv_test_core/lv_test_font_loader.c
+++ b/tests/lv_test_core/lv_test_font_loader.c
@@ -51,9 +51,9 @@ extern lv_font_t font_3;
 void lv_test_font_loader(void)
 {
 #if LV_USE_FILESYSTEM
-    lv_font_t * font_1_bin = lv_font_load("f:font_1.fnt");
-    lv_font_t * font_2_bin = lv_font_load("f:font_2.fnt");
-    lv_font_t * font_3_bin = lv_font_load("f:font_3.fnt");
+    lv_font_t * font_1_bin = lv_font_load("F:font_1.fnt");
+    lv_font_t * font_2_bin = lv_font_load("F:font_2.fnt");
+    lv_font_t * font_3_bin = lv_font_load("F:font_3.fnt");
 
     compare_fonts(&font_1, font_1_bin);
     compare_fonts(&font_2, font_2_bin);
diff --git a/tests/lv_test_main.c b/tests/lv_test_main.c
index f1fd224cc..beaa4685d 100644
--- a/tests/lv_test_main.c
+++ b/tests/lv_test_main.c
@@ -28,23 +28,21 @@ int main(void)
 
 
 #if LV_USE_FILESYSTEM
-static lv_fs_res_t open_cb(struct _lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode)
+static void * open_cb(struct _lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
 {
     (void) drv;
     (void) mode;
 
     FILE * fp = fopen(path, "rb"); // only reading is supported
 
-    *((FILE **)file_p) = fp;
-    return NULL == fp ? LV_FS_RES_UNKNOWN : LV_FS_RES_OK;
+    return fp;
 }
 
 static lv_fs_res_t close_cb(struct _lv_fs_drv_t * drv, void * file_p)
 {
     (void) drv;
 
-    FILE * fp = *((FILE **) file_p);
-    fclose(fp);
+    fclose(file_p);
     return LV_FS_RES_OK;
 }
 
@@ -52,17 +50,30 @@ static lv_fs_res_t read_cb(struct _lv_fs_drv_t * drv, void * file_p, void * buf,
 {
     (void) drv;
 
-    FILE * fp = *((FILE **) file_p);
-    *br = fread(buf, 1, btr, fp);
+    *br = fread(buf, 1, btr, file_p);
     return (*br <= 0) ? LV_FS_RES_UNKNOWN : LV_FS_RES_OK;
 }
 
-static lv_fs_res_t seek_cb(struct _lv_fs_drv_t * drv, void * file_p, uint32_t pos)
+static lv_fs_res_t seek_cb(struct _lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t w)
 {
     (void) drv;
 
-    FILE * fp = *((FILE **) file_p);
-    fseek (fp, pos, SEEK_SET);
+    uint32_t w2;
+    switch(w) {
+    case LV_FS_SEEK_SET:
+        w2 = SEEK_SET;
+        break;
+    case LV_FS_SEEK_CUR:
+        w2 = SEEK_CUR;
+        break;
+    case LV_FS_SEEK_END:
+        w2 = SEEK_END;
+        break;
+    default:
+        w2 = SEEK_SET;
+    }
+
+    fseek (file_p, pos, w2);
 
     return LV_FS_RES_OK;
 }
@@ -71,17 +82,11 @@ static lv_fs_res_t tell_cb(struct _lv_fs_drv_t * drv, void * file_p, uint32_t *
 {
     (void) drv;
 
-    FILE * fp = *((FILE **) file_p);
-    *pos_p = ftell(fp);
+    *pos_p = ftell(file_p);
 
     return LV_FS_RES_OK;
 }
 
-static bool ready_cb(struct _lv_fs_drv_t * drv)
-{
-    (void) drv;
-    return true;
-}
 #endif
 
 static void hal_init(void)
@@ -101,9 +106,7 @@ static void hal_init(void)
     lv_fs_drv_t drv;
     lv_fs_drv_init(&drv);                     /*Basic initialization*/
 
-    drv.letter = 'f';                         /*An uppercase letter to identify the drive */
-    drv.file_size = sizeof(FILE *);   /*Size required to store a file object*/
-    drv.ready_cb = ready_cb;               /*Callback to tell if the drive is ready to use */
+    drv.letter = 'F';                         /*An uppercase letter to identify the drive */
     drv.open_cb = open_cb;                 /*Callback to open a file */
     drv.close_cb = close_cb;               /*Callback to close a file */
     drv.read_cb = read_cb;                 /*Callback to read a file */