Set "/sim/fghome-readonly" to false also for Windows.

[flightgear.git] / src / Main / fg_init.cxx

diff --git a/src/Main/fg_init.cxx b/src/Main/fg_init.cxx
index 0278fe03f62f08f6860512afd100f3f4ff8e297f..dc56fb0af50d09d2b354c2980ce3745d22a9e1be 100644 (file)
--- a/src/Main/fg_init.cxx
+++ b/src/Main/fg_init.cxx
@@ -410,16 +410,17 @@ bool fgInitHome()
 #else
     // POSIX, do open+unlink trick to the file is deleted on exit, even if we
     // crash or exit(-1)
-    size_t len = snprintf(buf, 16, "%d", getpid());
+    ssize_t len = snprintf(buf, 16, "%d", getpid());
     int fd = ::open(pidPath.c_str(), O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0644);
     if (fd >= 0) {
-        ::write(fd, buf, len);
-        ::unlink(pidPath.c_str()); // delete file when app quits
-        result = true;
+        result = ::write(fd, buf, len) == len;
+        if( ::unlink(pidPath.c_str()) != 0 ) // delete file when app quits
+          result = false;
     }
-    
-    fgSetBool("/sim/fghome-readonly", false);
 #endif
+
+    fgSetBool("/sim/fghome-readonly", false);
+
     if (!result) {
         flightgear::fatalMessageBox("File permissions problem",
                                     "Can't write to user-data storage folder, check file permissions and FG_HOME.",