+ else if(obj->my_dev->read_only)
+ yaffsfs_SetError(-EACCES);
+ else if( new_size < 0 || new_size > YAFFS_MAX_FILE_SIZE)
+ yaffsfs_SetError(-EINVAL);
+ else
+ /* resize the file */
+ result = yaffs_resize_file(obj,new_size);
+ yaffsfs_Unlock();
+
+ return (result) ? 0 : -1;
+
+}
+
+off_t yaffs_lseek(int fd, off_t offset, int whence)
+{
+ yaffsfs_Handle *h = NULL;
+ struct yaffs_obj *obj = NULL;
+ int pos = -1;
+ int fSize = -1;
+
+ yaffsfs_Lock();
+ h = yaffsfs_GetHandlePointer(fd);
+ obj = yaffsfs_GetHandleObject(fd);
+
+ if(!h || !obj){
+ /* bad handle */
+ yaffsfs_SetError(-EBADF);
+ } else {
+ if(whence == SEEK_SET){
+ if(offset >= 0)
+ pos = offset;
+ } else if(whence == SEEK_CUR) {
+ if( (h->position + offset) >= 0)
+ pos = (h->position + offset);
+ } else if(whence == SEEK_END) {
+ fSize = yaffs_get_obj_length(obj);
+ if(fSize >= 0 && (fSize + offset) >= 0)
+ pos = fSize + offset;
+ }
+
+ if(pos >= 0)
+ h->position = pos;