For example... I believe there was manual expanding... in the past.

#define GET_CAN_EXPAND "sudo raspi-config nonint get_can_expand"
#define EXPAND_FS "sudo raspi-config nonint do_expand_rootfs"
#define GET_HOSTNAME "sudo raspi-config nonint get_hostname"
#define SET_HOSTNAME "sudo raspi-config nonint do_hostname %s"
#define GET_BOOT_CLI "sudo raspi-config nonint get_boot_cli"
#define GET_AUTOLOGIN "sudo raspi-config nonint get_autologin"
#define SET_BOOT_CLI "sudo raspi-config nonint do_boot_behaviour B1"
#define SET_BOOT_CLIA "sudo raspi-config nonint do_boot_behaviour B2"
#define SET_BOOT_GUI "sudo raspi-config nonint do_boot_behaviour B3"
#define SET_BOOT_GUIA "sudo raspi-config nonint do_boot_behaviour B4"
#define GET_BOOT_WAIT "sudo raspi-config nonint get_boot_wait"
#define SET_BOOT_WAIT "sudo raspi-config nonint do_boot_wait %d"
#define GET_SPLASH "sudo raspi-config nonint get_boot_splash"
#define SET_SPLASH "sudo raspi-config nonint do_boot_splash %d"
#define GET_OVERSCAN "sudo raspi-config nonint get_overscan"
#define SET_OVERSCAN "sudo raspi-config nonint do_overscan %d"
#define GET_CAMERA "sudo raspi-config nonint get_camera"
#define SET_CAMERA "sudo raspi-config nonint do_camera %d"
#define GET_SSH "sudo raspi-config nonint get_ssh"
#define SET_SSH "sudo raspi-config nonint do_ssh %d"
#define GET_VNC "sudo raspi-config nonint get_vnc"
#define SET_VNC "sudo raspi-config nonint do_vnc %d"
#define GET_SPI "sudo raspi-config nonint get_spi"
#define SET_SPI "sudo raspi-config nonint do_spi %d"
#define GET_I2C "sudo raspi-config nonint get_i2c"
#define SET_I2C "sudo raspi-config nonint do_i2c %d"
#define GET_SERIAL "sudo raspi-config nonint get_serial"
#define GET_SERIALHW "sudo raspi-config nonint get_serial_hw"
#define SET_SERIAL "sudo raspi-config nonint do_serial %d"
#define GET_1WIRE "sudo raspi-config nonint get_onewire"
#define SET_1WIRE "sudo raspi-config nonint do_onewire %d"
#define GET_RGPIO "sudo raspi-config nonint get_rgpio"
#define SET_RGPIO "sudo raspi-config nonint do_rgpio %d"
#define GET_PI_TYPE "sudo raspi-config nonint get_pi_type"
#define GET_OVERCLOCK "sudo raspi-config nonint get_config_var arm_freq /boot/config.txt"
#define SET_OVERCLOCK "sudo raspi-config nonint do_overclock %s"
#define GET_GPU_MEM "sudo raspi-config nonint get_config_var gpu_mem /boot/config.txt"
#define GET_GPU_MEM_256 "sudo raspi-config nonint get_config_var gpu_mem_256 /boot/config.txt"
#define GET_GPU_MEM_512 "sudo raspi-config nonint get_config_var gpu_mem_512 /boot/config.txt"
#define GET_GPU_MEM_1K "sudo raspi-config nonint get_config_var gpu_mem_1024 /boot/config.txt"
#define SET_GPU_MEM "sudo raspi-config nonint do_memory_split %d"
#define GET_HDMI_GROUP "sudo raspi-config nonint get_config_var hdmi_group /boot/config.txt"
#define GET_HDMI_MODE "sudo raspi-config nonint get_config_var hdmi_mode /boot/config.txt"
#define SET_HDMI_GP_MOD "sudo raspi-config nonint do_resolution %d %d"
#define GET_WIFI_CTRY "sudo raspi-config nonint get_wifi_country"
#define SET_WIFI_CTRY "sudo raspi-config nonint do_wifi_country %s"
#define CHANGE_PASSWD "(echo "%s" ; echo "%s" ; echo "%s") | passwd"