rem: return vfs_open(path, st, omode, false);
add: return vfs_open(path, omode, false);
context: user_open(const char *upath, stream_type st, int omode){	char path[SYS_MAX_PATH_LEN];	int rc;dprintf("user_open\n");	if ((addr)upath >= KERNEL_BASE && (addr)upath <= KERNEL_TOP)		return ERR_VM_BAD_USER_MEMORY;	rc = user_strncpy(path, upath, SYS_MAX_PATH_LEN-1);	if(rc < 0)		return rc;	path[SYS_MAX_PATH_LEN-1] = 0;dprintf("calling vfs_open(%s)\n", path);	return vfs_open(path, st, omode, false);}