Minor improvement in error handling

NEWS

@@ -1,4 +1,4 @@
-xboxdrv 0.3 - (26/Aug/2008)
+xboxdrv 0.3 - (06/Nov/2008)
 ============================
 
 * added short note when the USB device is busy

SConstruct

@@ -1,6 +1,6 @@
 # -*- python -*-
 
-env = Environment(CPPFLAGS=["-g", "-O0", "-Wall"], LIBS=["usb"])
+env = Environment(CPPFLAGS=["-g", "-O2", "-Wall"], LIBS=["usb"])
 env.Program("xboxdrv", ["xboxdrv.cpp", 
                         "xboxmsg.cpp",
                         "uinput.cpp",

tools/.gitignore

@@ -1,3 +1,4 @@
 *~
 evtest
 jstest
+usbdebug

uinput.cpp

@@ -201,7 +201,8 @@ uInput::setup_xbox360_gamepad(GamepadType type)
       uinp.absmax[ABS_HAT0Y] =  1;
     }
 
-  write(fd, &uinp, sizeof(uinp));
+  if (write(fd, &uinp, sizeof(uinp)) < 0)
+    throw std::runtime_error(strerror(errno));
 }
 
 void
@@ -247,7 +248,8 @@ uInput::setup_xbox360_guitar()
   uinp.absmax[ABS_Y] =  32767;
 
   
-  write(fd, &uinp, sizeof(uinp));  
+  if (write(fd, &uinp, sizeof(uinp)) < 0)
+    throw std::runtime_error(strerror(errno));
 }
 
 uInput::~uInput()
@@ -267,7 +269,8 @@ uInput::send_button(uint16_t code, int32_t value)
   ev.code  = code;
   ev.value = (value>0) ? 1 : 0;
 
- write(fd, &ev, sizeof(ev));
+  if (write(fd, &ev, sizeof(ev)) < 0)
+    throw std::runtime_error(strerror(errno));
 }
 
 void
@@ -281,7 +284,8 @@ uInput::send_axis(uint16_t code, int32_t value)
   ev.code  = code;
   ev.value = value;
 
- write(fd, &ev, sizeof(ev));  
+  if (write(fd, &ev, sizeof(ev)) < 0)
+    throw std::runtime_error(strerror(errno));
 }
 
 void

xboxdrv.cpp

@@ -17,6 +17,7 @@
 */
 
 #include <signal.h>
+#include <errno.h>
 #include <boost/format.hpp>
 #include <usb.h>
 #include <unistd.h>
@@ -1079,7 +1080,10 @@ int main(int argc, char** argv)
 
           pid_t sid = setsid();
           std::cout << "Sid: " << sid << std::endl;
-          chdir("/");
+          if (chdir("/") != 0)
+            {
+              throw std::runtime_error(strerror(errno));
+            }
 
           run_main(opts);
         }