fsutils/examples: Include unistd.h explicitly

to get the prototypes or macros are defined in it

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

canutils/libobd2/obd_sendrequest.c

@@ -30,6 +30,8 @@
 #include <stdlib.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
+
 #include <nuttx/can/can.h>
 
 #include "canutils/obd.h"

canutils/libobd2/obd_waitresponse.c

@@ -31,6 +31,8 @@
 #include <string.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
+
 #include <nuttx/can/can.h>
 
 #include "canutils/obd.h"
@@ -48,8 +50,8 @@
  *   Wait for a message from ECUs with requested PID that was sent using
  *   obd_send_request().
  *
- *   It will return an error case it doesn't receive the msg after the elapsed
- *   "timeout" time.
+ *   It will return an error case it doesn't receive the msg after the
+ *   elapsed "timeout" time.
  *
  ****************************************************************************/
 
@@ -109,10 +111,10 @@ int obd_wait_response(FAR struct obd_dev_s *dev, uint8_t opmode, uint8_t pid,
 
       /* Check if we received a Response Message */
 
-      if ((extended && dev->can_rxmsg.cm_hdr.ch_id == OBD_PID_EXT_RESPONSE) || \
+      if ((extended &&
+           dev->can_rxmsg.cm_hdr.ch_id == OBD_PID_EXT_RESPONSE) ||
           (!extended && dev->can_rxmsg.cm_hdr.ch_id == OBD_PID_STD_RESPONSE))
         {
-
           /* Check if the Response if for the PID we are interested! */
 
           if (dev->can_rxmsg.cm_data[1] == (opmode + OBD_RESP_BASE) && \

examples/abntcodi/abntcodi_main.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * apps/examples/hello/abntcodi_main.c
+ * apps/examples/abntcodi/abntcodi_main.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -28,6 +28,7 @@
 #include <fcntl.h>
 #include <syslog.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #include "industry/abnt_codi.h"
 
@@ -45,20 +46,22 @@ void print_abnt_codi(FAR struct abnt_codi_proto_s *proto)
          proto->end_act_dem);
   printf("Current Bill Indicator: %d\n", proto->bill_indicator);
   printf("Reactive Interval Indicator: %d\n", proto->react_interval);
-  printf("Capacitive Reactive Pulses are used to calculate consumption: %s\n",
-         boolstr(proto->react_cap_pulse));
+  printf("Capacitive Reactive Pulses are used to calculate consumption: "
+         "%s\n", boolstr(proto->react_cap_pulse));
   printf("Inductive Reactive Pulses are used to calculate consumption: %s\n",
          boolstr(proto->react_ind_pulse));
   printf("Segment type: %s\n",
          proto->segment_type == SEGMENT_PEEK     ? "PEEK"        :
          proto->segment_type == SEGMENT_OUT_PEEK ? "OUT OF PEEK" :
-         proto->segment_type == SEGMENT_RESERVED ? "RESERVED"    : "UNKNOWN");
+         proto->segment_type == SEGMENT_RESERVED ? "RESERVED"    :
+                                                   "UNKNOWN");
   printf("Charges type: %s\n",
          proto->charge_type == CHARGES_BLUE        ? "BLUE"       :
          proto->charge_type == CHARGES_GREEN       ? "GREEN"      :
-         proto->charge_type == CHARGES_IRRIGATORS  ? "IRRIGATORS" : "OTHERS");
-  printf("Number of Active pulses since the beginning of current demand: %d\n",
-         proto->pulses_act_dem);
+         proto->charge_type == CHARGES_IRRIGATORS  ? "IRRIGATORS" :
+                                                     "OTHERS");
+  printf("Number of Active pulses since the beginning of current demand: "
+         "%d\n", proto->pulses_act_dem);
   printf("Number of Reactive pulses since beginning of current demand: %d\n",
          proto->pulses_react_dem);
 }

examples/ajoystick/ajoy_main.c

@@ -32,6 +32,7 @@
 #include <errno.h>
 #include <fixedmath.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/input/ajoystick.h>
 

examples/alarm/alarm_main.c

@@ -32,6 +32,7 @@
 #include <fcntl.h>
 #include <sched.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/timers/rtc.h>
 

examples/apa102/apa102_main.c

@@ -30,6 +30,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include <nuttx/leds/apa102.h>
 
@@ -59,7 +60,8 @@ struct apa102_ledstrip_s ledstrip[NUM_LEDS];
  *   Converts a color from HSV to RGB.
  *
  *   Note: This function is based on Pololu example:
- *   https://github.com/pololu/apa102-arduino/blob/master/examples/Rainbow/Rainbow.ino
+ *   https://github.com/pololu/apa102-arduino/blob/master/examples/Rainbow/
+ *   Rainbow.ino
  *
  * Input Parameters:
  *   h is hue, as a number between 0 and 360.
@@ -79,7 +81,7 @@ static struct apa102_ledstrip_s hsvtorgb(uint16_t h, uint8_t s, uint8_t v)
   uint8_t g = 0;
   uint8_t b = 0;
 
-  switch((h / 60) % 6)
+  switch ((h / 60) % 6)
     {
       case 0:
         r = v;

examples/apds9960/apds9960_main.c

@@ -28,6 +28,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/apds9960.h>
 

examples/bmi160/sixaxis_main.c

@@ -26,6 +26,7 @@
 #include <inttypes.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/bmi160.h>
 

examples/bridge/bridge_main.c

@@ -28,6 +28,7 @@
 #include <sched.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <net/if.h>
 #include <arpa/inet.h>

examples/buttons/buttons_main.c

@@ -33,6 +33,7 @@
 #include <fcntl.h>
 #include <sched.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/input/buttons.h>
 

examples/calib_udelay/calib_udelay_main.c

@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Pre-processor Definitions

examples/camera/camera_main.c

@@ -32,6 +32,7 @@
 #include <sys/time.h>
 #include <sys/ioctl.h>
 #include <time.h>
+#include <unistd.h>
 
 #include <nuttx/video/video.h>
 

examples/can/can_main.c

@@ -34,6 +34,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/can/can.h>
 

examples/chrono/chrono_main.c

@@ -32,6 +32,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <time.h>
+#include <unistd.h>
 #include <sys/time.h>
 
 #include <nuttx/input/buttons.h>

examples/djoystick/djoy_main.c

@@ -31,6 +31,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/input/djoystick.h>
 

examples/esp32_himem/esp32_himem_main.c

@@ -23,11 +23,13 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
+
 #include <stdio.h>
 #include <fcntl.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <assert.h>
+#include <unistd.h>
 
 #include <nuttx/himem/himem.h>
 

examples/fboverlay/fboverlay_main.c

@@ -30,6 +30,8 @@
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <errno.h>
+#include <unistd.h>
+
 #include <nuttx/video/fb.h>
 
 #include <nuttx/config.h>

examples/foc/foc_device.c

@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <assert.h>
+#include <unistd.h>
 
 #include "foc_debug.h"
 #include "foc_device.h"

examples/foc/foc_fixed16_thr.c

@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <assert.h>
+#include <unistd.h>
 
 #include <dspb16.h>
 

examples/foc/foc_float_thr.c

@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <assert.h>
+#include <unistd.h>
 
 #include <dsp.h>
 

examples/foc/foc_intf.c

@@ -28,6 +28,7 @@
 #include <fcntl.h>
 #include <assert.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <sys/ioctl.h>
 

examples/ft80x/ft80x_coprocessor.c

@@ -30,6 +30,7 @@
 #include <nuttx/config.h>
 
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/lcd/ft80x.h>
 

examples/fxos8700cq_test/fxos8700cq_main.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * apps/examples/fxos8700cq/fxos8700cq_main.c
+ * apps/examples/fxos8700cq_test/fxos8700cq_main.c
  * fxos8700cq motion sensor sample application
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -24,8 +24,10 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
+
 #include <fcntl.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/fxos8700cq.h>
 

examples/gpio/gpio_main.c

@@ -32,6 +32,7 @@
 #include <fcntl.h>
 #include <signal.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/ioexpander/gpio.h>
 

examples/gps/gps_main.c

@@ -28,6 +28,7 @@
 #include <fcntl.h>
 #include <wchar.h>
 #include <syslog.h>
+#include <unistd.h>
 
 #include "minmea/minmea.h"
 

examples/hdc1008_demo/hdc1008_main.c

@@ -31,6 +31,7 @@
 
 #include <fcntl.h>
 #include <stdio.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Pre-processor Definitions

examples/i2schar/i2schar_receiver.c

@@ -30,6 +30,7 @@
 #include <pthread.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/audio/audio.h>
 

examples/i2schar/i2schar_transmitter.c

@@ -30,6 +30,7 @@
 #include <pthread.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/audio/audio.h>
 

examples/i2sloop/i2sloop_main.c

@@ -34,6 +34,7 @@
 #include <string.h>
 #include <assert.h>
 #include <signal.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Private Data

examples/ipcfg/ipcfg_main.c

@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include <fcntl.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <arpa/inet.h>
 

examples/isl29023/isl29023_main.c

@@ -31,6 +31,7 @@
 
 #include <fcntl.h>
 #include <stdio.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Pre-processor Definitions

examples/leds/leds_main.c

@@ -32,6 +32,7 @@
 #include <sched.h>
 #include <errno.h>
 #include <signal.h>
+#include <unistd.h>
 
 #include <nuttx/leds/userled.h>
 

examples/lis3dsh_reader/lis3dsh_reader_main.c

@@ -46,9 +46,9 @@
 #include <fcntl.h>
 #include <sched.h>
 #include <errno.h>
-
 #include <debug.h>
 #include <time.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/lis3dsh.h>
 

examples/lp503x/lp503x_main.c

@@ -32,6 +32,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#include <unistd.h>
+
 #include "system/readline.h"
 
 #include <nuttx/leds/lp503x.h>

examples/ltr308/ltr308_main.c

@@ -32,6 +32,7 @@
 #include <fcntl.h>
 #include <sys/ioctl.h>
 #include <poll.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Public Functions

examples/max31855/max31855_main.c

@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Public Functions

examples/mcuboot/swap_test/set_img_main.c

@@ -26,6 +26,8 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
+
 #include <sys/boardctl.h>
 
 #include <bootutil/bootutil_public.h>

examples/media/media_main.c

@@ -31,6 +31,7 @@
 #include <stdlib.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/fs/fs.h>
 #include <nuttx/mtd/mtd.h>

examples/mlx90614/mlx90614_main.c

@@ -47,6 +47,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/ioctl.h>
 #include <nuttx/sensors/mlx90614.h>

examples/noteprintf/noteprintf_main.c

@@ -23,7 +23,9 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
+
 #include <stdio.h>
+#include <unistd.h>
 
 #include "nuttx/sched_note.h"
 

examples/nrf24l01_btle/nrf24l01_btle.c

@@ -26,6 +26,7 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/signal.h>
 #include <nuttx/sensors/dhtxx.h>
@@ -35,6 +36,7 @@
 #include <stdio.h>
 #include <poll.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include "nrf24l01_btle.h"
 

examples/nrf24l01_term/nrf24l01_term.c

@@ -28,7 +28,6 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 
-#include <unistd.h>
 #include <inttypes.h>
 #include <stdint.h>
 #include <stdbool.h>

examples/nunchuck/nunchuck_main.c

@@ -32,6 +32,7 @@
 #include <errno.h>
 #include <fixedmath.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/input/nunchuck.h>
 

examples/nxdemo/nxdemo_bkgd.c

@@ -33,6 +33,7 @@
 #include <sys/param.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/nx/nx.h>
 #include <nuttx/nx/nxglib.h>

examples/nxscope/nxscope_main.c

@@ -27,6 +27,7 @@
 #include <assert.h>
 #include <pthread.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include "logging/nxscope/nxscope.h"
 

examples/oneshot/oneshot_main.c

@@ -32,6 +32,7 @@
 #include <fcntl.h>
 #include <time.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/timers/oneshot.h>
 

examples/pca9635/pca9635_main.c

@@ -30,6 +30,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include <nuttx/leds/pca9635pw.h>
 

examples/powermonitor/powermonitor_main.c

@@ -34,6 +34,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/ltc4151.h>
 

examples/random/random_main.c

@@ -30,10 +30,12 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* Configuration ************************************************************/
 
 #ifndef CONFIG_EXAMPLES_MAXSAMPLES
@@ -87,7 +89,9 @@ int main(int argc, FAR char *argv[])
       nsamples = CONFIG_EXAMPLES_MAXSAMPLES;
     }
 
-  /* fill buffer to make it super-clear as to what has and has not been written */
+  /* fill buffer to make it super-clear as to what has and has not been
+   * written
+   */
 
   memset(buffer, 0xcc, sizeof(buffer));
 
@@ -116,15 +120,15 @@ int main(int argc, FAR char *argv[])
 
   if (nread != nsamples * sizeof(uint32_t))
     {
-      fprintf(stderr, "ERROR: Read from /dev/random only produced %d bytes\n",
-              (int)nread);
+      fprintf(stderr, "ERROR: Read from /dev/random only produced %zd "
+              "bytes\n", nread);
       close(fd);
       exit(EXIT_FAILURE);
     }
 
   /* Dump the sample buffer */
 
-  lib_dumpbuffer("Random values", (FAR const uint8_t*)buffer, nread);
+  lib_dumpbuffer("Random values", (FAR const uint8_t *)buffer, nread);
   close(fd);
   return EXIT_SUCCESS;
 }

examples/rgbled/rgbled.c

@@ -23,10 +23,12 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
+
 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Pre-processor Definitions
@@ -63,37 +65,37 @@ int main(int argc, FAR char *argv[])
       return -1;
     }
 
-  while(1)
-  {
-    red   += sred;
-    green += sgreen;
-    blue  += sblue;
+  while (1)
+    {
+      red   += sred;
+      green += sgreen;
+      blue  += sblue;
 
-    if (green == 255)
-      {
-        sred   = 0;
-        sgreen = -1;
-        sblue  = 1;
-      }
+      if (green == 255)
+        {
+          sred   = 0;
+          sgreen = -1;
+          sblue  = 1;
+        }
 
-    if (blue == 255)
-      {
-        sred   = 1;
-        sgreen = 0;
-        sblue  = -1;
-      }
+      if (blue == 255)
+        {
+          sred   = 1;
+          sgreen = 0;
+          sblue  = -1;
+        }
 
-    if (red == 255)
-      {
-        sred   = -1;
-        sblue  = 0;
-        sgreen = 1;
-      }
+      if (red == 255)
+        {
+          sred   = -1;
+          sblue  = 0;
+          sgreen = 1;
+        }
 
-    sprintf(buffer, "#%02X%02X%02X", red, green, blue);
-    write(fd, buffer, 8);
-    usleep(5000);
-  }
+      sprintf(buffer, "#%02X%02X%02X", red, green, blue);
+      write(fd, buffer, 8);
+      usleep(5000);
+    }
 
   return 0;
 }

examples/serialrx/serialrx_main.c

@@ -30,6 +30,8 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
+
 #include <nuttx/arch.h>
 
 /****************************************************************************

examples/sht3x/sht3x_main.c

@@ -23,12 +23,13 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
-#include <stdio.h>
 
 #include <sys/types.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/ioctl.h>
 #include <nuttx/sensors/sht3x.h>

examples/slcd/slcd_main.c

@@ -31,6 +31,7 @@
 #include <string.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/lcd/slcd_ioctl.h>
 #include <nuttx/lcd/slcd_codec.h>

examples/stat/stat_main.c

@@ -31,6 +31,7 @@
 #include <string.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Private Data

examples/sx127x_demo/sx127x_demo.c

@@ -28,7 +28,6 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 
-#include <unistd.h>
 #include <stdint.h>
 #include <stdbool.h>
 #include <stdio.h>

examples/timer/timer_main.c

@@ -31,6 +31,8 @@
 #include <signal.h>
 #include <errno.h>
 #include <string.h>
+#include <unistd.h>
+
 #include <nuttx/timers/timer.h>
 
 /****************************************************************************

examples/timer_gpio/timer_gpio_main.c

@@ -31,6 +31,8 @@
 #include <signal.h>
 #include <errno.h>
 #include <string.h>
+#include <unistd.h>
+
 #include <nuttx/timers/timer.h>
 #include <nuttx/ioexpander/gpio.h>
 

examples/udpblaster/udpblaster_target.c

@@ -30,6 +30,7 @@
 #include <poll.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <net/if.h>
 #include <arpa/inet.h>

examples/userfs/userfs_main.c

@@ -30,6 +30,7 @@
 #include <fcntl.h>
 #include <dirent.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/fs/userfs.h>
 

examples/usrsocktest/usrsocktest_basic_connect.c

@@ -29,6 +29,7 @@
 #include <assert.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_basic_getsockname.c

@@ -30,6 +30,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_basic_getsockopt.c

@@ -27,6 +27,7 @@
 #include <sys/types.h>
 #include <stdbool.h>
 #include <assert.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_basic_send.c

@@ -30,6 +30,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_basic_setsockopt.c

@@ -29,6 +29,7 @@
 #include <assert.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_block_recv.c

@@ -31,6 +31,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <sys/time.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_block_send.c

@@ -32,6 +32,7 @@
 #include <arpa/inet.h>
 #include <string.h>
 #include <sys/time.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_chardev.c

@@ -24,6 +24,7 @@
 
 #include <fcntl.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_daemon.c

@@ -34,11 +34,13 @@
 #include <errno.h>
 #include <poll.h>
 #include <pthread.h>
+#include <unistd.h>
 
 #include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+
 #include <nuttx/net/usrsock.h>
 
 #include "defines.h"

examples/usrsocktest/usrsocktest_multi_thread.c

@@ -26,6 +26,7 @@
 #include <assert.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_noblock_connect.c

@@ -28,8 +28,10 @@
 #include <stdbool.h>
 #include <assert.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_noblock_recv.c

@@ -28,6 +28,7 @@
 #include <stdbool.h>
 #include <assert.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 

examples/usrsocktest/usrsocktest_noblock_send.c

@@ -31,6 +31,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_nodaemon.c

@@ -24,6 +24,7 @@
 
 #include <sys/socket.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_poll.c

@@ -32,6 +32,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_remote_disconnect.c

@@ -32,6 +32,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "defines.h"
 

examples/usrsocktest/usrsocktest_wake_with_signal.c

@@ -28,6 +28,7 @@
 #include <arpa/inet.h>
 #include <errno.h>
 #include <poll.h>
+#include <unistd.h>
 
 #include <nuttx/clock.h>
 

examples/watched/watched_main.c

@@ -26,6 +26,8 @@
 #include <stdio.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <unistd.h>
+
 #include "watched.h"
 
 /****************************************************************************

examples/watcher/task_mn.c

@@ -31,6 +31,8 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
+#include <unistd.h>
+
 #include <nuttx/note/noteram_driver.h>
 #include "task_mn.h"
 

examples/watcher/wdt.c

@@ -32,6 +32,8 @@
 #include <fcntl.h>
 #include <debug.h>
 #include <sys/ioctl.h>
+#include <unistd.h>
+
 #include "wdt.h"
 #include "task_mn.h"
 

examples/zerocross/zerocross_main.c

@@ -31,6 +31,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/zerocross.h>
 

fsutils/mkfatfs/mkfatfs.c

@@ -31,6 +31,7 @@
 #include <string.h>
 #include <debug.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <nuttx/fs/fs.h>
 

fsutils/mkfatfs/writefat.c

@@ -30,6 +30,7 @@
 #include <string.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <nuttx/fs/fat.h>
 

graphics/pdcurs34/nuttx/pdcdisp.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * apps/graphics/nuttx/pdcdisp.c
+ * apps/graphics/pdcurs34/nuttx/pdcdisp.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -25,6 +25,7 @@
 #include <sys/ioctl.h>
 #include <assert.h>
 #include <errno.h>
+#include <unistd.h>
 
 #ifdef CONFIG_SYSTEM_TERMCURSES
 #include <system/termcurses.h>

graphics/pdcurs34/nuttx/pdcscrn.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * apps/graphics/nuttx/pdcscrn.c
+ * apps/graphics/pdcurs34/nuttx/pdcscrn.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -31,6 +31,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <graphics/curses.h>
 #include "pdcnuttx.h"
@@ -61,7 +62,8 @@ bool graphic_screen = false;
 #ifdef CONFIG_SYSTEM_TERMCURSES
 static void PDC_scr_free_term(FAR SCREEN *sp)
 {
-  FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
+  FAR struct pdc_termscreen_s *termscreen =
+    (FAR struct pdc_termscreen_s *)sp;
   FAR struct pdc_termstate_s  *termstate = &termscreen->termstate;
 
   /* Deinitialize termcurses */
@@ -145,7 +147,8 @@ static int PDC_scr_open_term(int argc, char **argv)
   ret = termcurses_getwinsize(termstate->tcurs, &winsz);
   if (ret != OK)
     {
-      PDC_LOG(("ERROR: Terminal termcurses driver doesn't support size reporting\n"));
+      PDC_LOG(("ERROR: Terminal termcurses driver doesn't support size "
+               "reporting\n"));
       free(termscreen);
       return ERR;
     }
@@ -156,8 +159,8 @@ static int PDC_scr_open_term(int argc, char **argv)
   SP->cols                     = winsz.ws_col;
   termscreen->termstate.out_fd = 1;
   termscreen->termstate.in_fd  = 0;
-  termscreen->termstate.fg_red = 0xFFFE;
-  termscreen->termstate.bg_red = 0xFFFE;
+  termscreen->termstate.fg_red = 0xfffe;
+  termscreen->termstate.bg_red = 0xfffe;
   termstate                    = &termscreen->termstate;
 
   /* Setup initial RGB colors */
@@ -172,7 +175,7 @@ static int PDC_scr_open_term(int argc, char **argv)
       greylevel                       += (i & COLOR_BLUE)  ? 0x40 : 0;
 
       termstate->greylevel[i]          = greylevel;
-      termstate->greylevel[i+8]        = greylevel | 0x3f;
+      termstate->greylevel[i + 8]      = greylevel | 0x3f;
 #else
       termstate->rgbcolor[i].red       = (i & COLOR_RED)   ? 0xc0 : 0;
       termstate->rgbcolor[i].green     = (i & COLOR_GREEN) ? 0xc0 : 0;
@@ -207,18 +210,20 @@ static int PDC_scr_open_term(int argc, char **argv)
  * Name: PDC_init_pair_term
  *
  * Description:
- *   The core of init_pair().  This does all the work of that function, except
- *   checking for values out of range.  The values passed to this function
- *   should be returned by a call to PDC_pair_content() with the same pair
- *   number.  PDC_transform_line() should use the specified colors when
- *   rendering a chtype with the given pair number.
+ *   The core of init_pair().  This does all the work of that function,
+ *   except checking for values out of range.  The values passed to this
+ *   function should be returned by a call to PDC_pair_content() with the
+ *   same pair number.  PDC_transform_line() should use the specified colors
+ *   when rendering a chtype with the given pair number.
  *
  ****************************************************************************/
 
 #ifdef CONFIG_SYSTEM_TERMCURSES
-static void PDC_init_pair_term(FAR SCREEN *sp, short pair, short fg, short bg)
+static void PDC_init_pair_term(FAR SCREEN *sp, short pair,
+                               short fg, short bg)
 {
-  FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
+  FAR struct pdc_termscreen_s *termscreen =
+    (FAR struct pdc_termscreen_s *)sp;
 
   termscreen->termstate.colorpair[pair].fg = fg;
   termscreen->termstate.colorpair[pair].bg = bg;
@@ -238,7 +243,8 @@ static void PDC_init_pair_term(FAR SCREEN *sp, short pair, short fg, short bg)
 int PDC_init_color_term(FAR SCREEN *sp, short color, short red, short green,
                         short blue)
 {
-  FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
+  FAR struct pdc_termscreen_s *termscreen =
+    (FAR struct pdc_termscreen_s *)sp;
   FAR struct pdc_termstate_s  *termstate;
 
   DEBUGASSERT(termscreen != NULL);
@@ -272,7 +278,8 @@ int PDC_init_color_term(FAR SCREEN *sp, short color, short red, short green,
 int PDC_color_content_term(FAR SCREEN *sp, short color,
                            FAR short *red, FAR short *green, FAR short *blue)
 {
-  FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
+  FAR struct pdc_termscreen_s *termscreen =
+    (FAR struct pdc_termscreen_s *)sp;
   FAR struct pdc_termstate_s  *termstate;
 
   DEBUGASSERT(termscreen != NULL);
@@ -303,9 +310,11 @@ int PDC_color_content_term(FAR SCREEN *sp, short color,
  ****************************************************************************/
 
 #ifdef CONFIG_SYSTEM_TERMCURSES
-static int PDC_pair_content_term(FAR SCREEN *sp, short pair, short *fg, short *bg)
+static int PDC_pair_content_term(FAR SCREEN *sp, short pair,
+                                 FAR short *fg, FAR short *bg)
 {
-  FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
+  FAR struct pdc_termscreen_s *termscreen =
+    (FAR struct pdc_termscreen_s *)sp;
 
   *fg = termscreen->termstate.colorpair[pair].fg;
   *bg = termscreen->termstate.colorpair[pair].bg;
@@ -442,7 +451,8 @@ int PDC_scr_open(int argc, char **argv)
 
   /* Allocate the global instance of SP */
 
-  fbscreen = (FAR struct pdc_fbscreen_s *)zalloc(sizeof(struct pdc_fbscreen_s));
+  fbscreen =
+    (FAR struct pdc_fbscreen_s *)zalloc(sizeof(struct pdc_fbscreen_s));
   if (fbscreen == NULL)
     {
       PDC_LOG(("ERROR: Failed to allocate SP\n"));
@@ -473,7 +483,7 @@ int PDC_scr_open(int argc, char **argv)
       greylevel                     += (i & COLOR_BLUE)  ? 0x40 : 0;
 
       fbstate->greylevel[i]          = greylevel;
-      fbstate->greylevel[i+8]        = greylevel | 0x3f;
+      fbstate->greylevel[i + 8]      = greylevel | 0x3f;
 #else
       fbstate->rgbcolor[i].red       = (i & COLOR_RED)   ? 0xc0 : 0;
       fbstate->rgbcolor[i].green     = (i & COLOR_GREEN) ? 0xc0 : 0;
@@ -564,8 +574,8 @@ int PDC_scr_open(int argc, char **argv)
    * address mapping to make the memory accessible to the application.
    */
 
-  fbstate->fbmem = mmap(NULL, pinfo.fblen, PROT_READ|PROT_WRITE,
-                        MAP_SHARED|MAP_FILE, fbstate->fbfd, 0);
+  fbstate->fbmem = mmap(NULL, pinfo.fblen, PROT_READ | PROT_WRITE,
+                        MAP_SHARED | MAP_FILE, fbstate->fbfd, 0);
   if (fbstate->fbmem == MAP_FAILED)
     {
       PDC_LOG(("ERROR: ioctl(FBIOGET_PLANEINFO) failed: %d\n", errno));
@@ -704,9 +714,9 @@ int PDC_resize_screen(int nlines, int ncols)
  *
  * Description:
  *   The non-portable functionality of reset_prog_mode() is handled here --
- *   whatever's not done in _restore_mode().  In current ports:  In OS/2, this
- *   sets the keyboard to binary mode; in Win32, it enables or disables the
- *   mouse pointer to match the saved mode; in others it does nothing.
+ *   whatever's not done in _restore_mode().  In current ports:  In OS/2,
+ *   this sets the keyboard to binary mode; in Win32, it enables or disables
+ *   the mouse pointer to match the saved mode; in others it does nothing.
  *
  ****************************************************************************/
 
@@ -763,11 +773,11 @@ void PDC_save_screen_mode(int i)
  * Name: PDC_init_pair
  *
  * Description:
- *   The core of init_pair().  This does all the work of that function, except
- *   checking for values out of range.  The values passed to this function
- *   should be returned by a call to PDC_pair_content() with the same pair
- *   number.  PDC_transform_line() should use the specified colors when
- *   rendering a chtype with the given pair number.
+ *   The core of init_pair().  This does all the work of that function,
+ *   except checking for values out of range.  The values passed to this
+ *   function should be returned by a call to PDC_pair_content() with the
+ *   same pair number.  PDC_transform_line() should use the specified colors
+ *   when rendering a chtype with the given pair number.
  *
  ****************************************************************************/
 

industry/foc/fixed16/foc_ang_hall.c

@@ -30,6 +30,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/hall3ph.h>
 

industry/foc/fixed16/foc_ang_qenco.c

@@ -30,6 +30,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/qencoder.h>
 

industry/foc/fixed16/foc_handler.c

@@ -27,6 +27,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include "industry/foc/foc_log.h"
 #include "industry/foc/foc_common.h"

industry/foc/float/foc_ang_hall.c

@@ -30,6 +30,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/hall3ph.h>
 

industry/foc/float/foc_ang_qenco.c

@@ -30,6 +30,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include <nuttx/sensors/qencoder.h>
 

industry/foc/float/foc_handler.c

@@ -27,6 +27,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include "industry/foc/foc_log.h"
 #include "industry/foc/foc_common.h"

netutils/esp8266/esp8266.c

@@ -38,6 +38,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <netdb.h>
 #include <arpa/inet.h>

netutils/iperf/iperf.c

@@ -30,6 +30,8 @@
 #include <netinet/in.h>
 #include <assert.h>
 #include <stdbool.h>
+#include <unistd.h>
+
 #include "iperf.h"
 
 /****************************************************************************

netutils/netinit/netinit.c

@@ -42,6 +42,7 @@
 #include <signal.h>
 #include <assert.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <net/if.h>
 #include <arpa/inet.h>

netutils/netlib/netlib_iptables.c

@@ -32,6 +32,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/socket.h>
+#include <unistd.h>
 
 #include <nuttx/net/netconfig.h>
 #include <nuttx/net/netfilter/ip_tables.h>

netutils/netlib/netlib_ipv4adaptor.c

@@ -32,6 +32,7 @@
 #include <string.h>
 #include <assert.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <net/if.h>
 #include <nuttx/net/ip.h>

netutils/netlib/netlib_ipv6adaptor.c

@@ -32,6 +32,7 @@
 #include <string.h>
 #include <assert.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include <net/if.h>
 #include <nuttx/net/ip.h>

netutils/ntpclient/ntpclient.c

@@ -38,6 +38,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <netinet/in.h>
 

netutils/pppd/pppd.c

@@ -52,6 +52,7 @@
 #include <poll.h>
 #include <time.h>
 #include <debug.h>
+#include <unistd.h>
 
 #include <netinet/in.h>
 #include <net/if.h>

nshlib/nsh_dbgcmds.c

@@ -31,6 +31,7 @@
 #include <string.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include "nsh.h"
 #include "nsh_console.h"

nshlib/nsh_fsutils.c

@@ -33,6 +33,7 @@
 #include <fcntl.h>
 #include <dirent.h>
 #include <assert.h>
+#include <unistd.h>
 
 #include "nsh.h"
 #include "nsh_console.h"