Exit with code 1 if an error occurs while reading from the input device

Author: coder-hugo

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.69])
-AC_INIT([linux-touch-gestures], [1.0.3], [[email protected]])
+AC_INIT([linux-touch-gestures], [1.0.4], [[email protected]])
 AM_INIT_AUTOMAKE
 AC_CONFIG_SRCDIR([src/main.c])
 

src/gesture_detection.c

@@ -460,7 +460,7 @@ static void *scroll_thread_function(void *val) {
   return NULL;
 }
 
-void process_events(int fd, configuration_t config, void (*callback)(input_event_array_t*)) {
+int process_events(int fd, configuration_t config, void (*callback)(input_event_array_t*)) {
   struct input_event ev[64];
   int i, rd;
 
@@ -487,7 +487,7 @@ void process_events(int fd, configuration_t config, void (*callback)(input_event
 
     if (rd < (int) sizeof(struct input_event)) {
       printf("expected %d bytes, got %d\n", (int) sizeof(struct input_event), rd);
-      return;
+      return 1;
     }
 
     for (i = 0; i < rd / sizeof(struct input_event); i++) {
@@ -529,4 +529,5 @@ void process_events(int fd, configuration_t config, void (*callback)(input_event
       }
     }
   }
+  return 0;
 }

src/gesture_detection.h

@@ -28,6 +28,6 @@
 #include "configuraion.h"
 #include "input_event_array.h"
 
-void process_events(int fd, configuration_t config, void (*callback)(input_event_array_t*));
+int process_events(int fd, configuration_t config, void (*callback)(input_event_array_t*));
 
 #endif // GESTURE_DETECTION_H_

src/main.c

@@ -146,6 +146,7 @@ static int open_touch_device(configuration_t config, int retry) {
 }
 
 int main(int argc, char *argv[]) {
+  int exit_code = 0;
   if (argc > 1) {
     configuration_t config = read_config(argv[1]);
     int_array_t *keys = get_keys_array(config);
@@ -166,10 +167,10 @@ int main(int argc, char *argv[]) {
     }
     printf("Opened input device\n");
     fflush(stdout);
-    process_events(touch_device_fd, config, &execute_events);
+    exit_code = process_events(touch_device_fd, config, &execute_events);
 
     close(touch_device_fd);
     destroy_uinput(uinput_fd);
   }
-  return 0;
+  return exit_code;
 }