feat(fsdrv): add posix lseek() error checking (#3444)

Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
lvgl · Sep 20, 2022 · 7aa1cc6 · 7aa1cc6
1 parent 3026af5
commit 7aa1cc6
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/src/extra/libs/fsdrv/lv_fs_posix.c b/src/extra/libs/fsdrv/lv_fs_posix.c
@@ -176,8 +176,8 @@ static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf,
 static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
 {
     LV_UNUSED(drv);
-    lseek((lv_uintptr_t)file_p, pos, whence);
-    return LV_FS_RES_OK;
+    off_t offset = lseek((lv_uintptr_t)file_p, pos, whence);
+    return offset < 0 ? LV_FS_RES_FS_ERR : LV_FS_RES_OK;
 }
 
 /**
@@ -191,8 +191,9 @@ static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs
 static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
 {
     LV_UNUSED(drv);
-    *pos_p = lseek((lv_uintptr_t)file_p, 0, SEEK_CUR);
-    return LV_FS_RES_OK;
+    off_t offset = lseek((lv_uintptr_t)file_p, 0, SEEK_CUR);
+    *pos_p = offset;
+    return offset < 0 ? LV_FS_RES_FS_ERR : LV_FS_RES_OK;
 }
 
 #ifdef WIN32