OsCompat.write never returns EINTR, rather throws InterruptedIOException

This is effectively clean up for previous commit
 but we're keeping git history for reference.

os-compat/src/main/java/androidx/system/OsConstants.java

@@ -17,7 +17,5 @@
 
 interface OsConstants {
 
-    int getConstant(String name);
-
     String errnoName(int errno);
 }

os-compat/src/main/java/androidx/system/OsConstantsApi21.java

@@ -4,21 +4,6 @@
 
 @RequiresApi(21)
 final class OsConstantsApi21 implements OsConstants {
-    @Override
-    public int getConstant(String name) {
-        switch (name) {
-            case "EINTR":
-                return android.system.OsConstants.EINTR;
-            default:
-                // Add used constants above as needed.
-                try {
-                    return android.system.OsConstants.class.getDeclaredField(name).getInt(null);
-                } catch (ReflectiveOperationException e) {
-                    throw new RuntimeException(e);
-                }
-        }
-    }
-
     @Override
     public String errnoName(int errno) {
         return android.system.OsConstants.errnoName(errno);

os-compat/src/main/java/androidx/system/OsConstantsCompat.java

@@ -33,8 +33,6 @@ private OsConstantsCompat() {
         }
     }
 
-    public static final int EINTR = IMPL.getConstant("EINTR");
-
     /**
      * Returns the string name of an errno value.
      * For example, "EACCES". See {@link Os#strerror} for human-readable errno descriptions.

os-compat/src/main/java/androidx/system/OsConstantsLibcore.java

@@ -1,21 +1,6 @@
 package androidx.system;
 
 final class OsConstantsLibcore implements OsConstants {
-    @Override
-    public int getConstant(String name) {
-        switch (name) {
-            case "EINTR":
-                return libcore.io.OsConstants.EINTR;
-            default:
-                // Add used constants above as needed.
-                try {
-                    return libcore.io.OsConstants.class.getDeclaredField(name).getInt(null);
-                } catch (ReflectiveOperationException e) {
-                    throw new RuntimeException(e);
-                }
-        }
-    }
-
     @Override
     public String errnoName(int errno) {
         return libcore.io.OsConstants.errnoName(errno);

server/src/main/java/com/genymobile/scrcpy/IO.java

@@ -2,7 +2,6 @@
 
 import androidx.system.ErrnoException;
 import androidx.system.OsCompat;
-import androidx.system.OsConstantsCompat;
 
 import java.io.FileDescriptor;
 import java.io.IOException;
@@ -19,9 +18,7 @@ public static void writeFully(FileDescriptor fd, ByteBuffer from) throws IOExcep
                 OsCompat.write(fd, from);
             }
         } catch (ErrnoException e) {
-            if (e.getErrno() != OsConstantsCompat.EINTR) {
-                throw new IOException(e);
-            }
+            throw new IOException(e);
         }
     }