diff options
Diffstat (limited to 'erts/emulator/drivers/unix/ttsl_drv.c')
| -rw-r--r-- | erts/emulator/drivers/unix/ttsl_drv.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/erts/emulator/drivers/unix/ttsl_drv.c b/erts/emulator/drivers/unix/ttsl_drv.c index 28c6cc0f94..d2a524cb6c 100644 --- a/erts/emulator/drivers/unix/ttsl_drv.c +++ b/erts/emulator/drivers/unix/ttsl_drv.c @@ -394,6 +394,8 @@ static ErlDrvSSizeT ttysl_control(ErlDrvData drv_data, { char resbuff[2*sizeof(Uint32)]; ErlDrvSizeT res_size; + + command -= ERTS_TTYSL_DRV_CONTROL_MAGIC_NUMBER; switch (command) { case CTRL_OP_GET_WINSIZE: { @@ -419,7 +421,7 @@ static ErlDrvSSizeT ttysl_control(ErlDrvData drv_data, } break; default: - return 0; + return -1; } if (rlen < res_size) { *rbuf = driver_alloc(res_size); |