Index: policykit-1-0.94/src/polkitagent/polkitagentsession.c
===================================================================
--- policykit-1-0.94.orig/src/polkitagent/polkitagentsession.c	2009-10-10 12:03:20.000000000 +0100
+++ policykit-1-0.94/src/polkitagent/polkitagentsession.c	2009-10-10 12:03:42.000000000 +0100
@@ -56,6 +56,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <pwd.h>
+#include <errno.h>
 
 #include "polkitagentmarshal.h"
 #include "polkitagentsession.h"
@@ -407,6 +408,8 @@
   gboolean add_newline;
   size_t response_len;
   const char newline[] = "\n";
+  ssize_t written;
+  ssize_t offset = 0;
 
   g_return_if_fail (response != NULL);
 
@@ -414,9 +417,39 @@
 
   add_newline = (response[response_len] != '\n');
 
-  write (session->child_stdin, response, response_len);
-  if (add_newline)
-    write (session->child_stdin, newline, 1);
+  do {
+      written = write(session->child_stdin, response + offset, response_len - offset);
+      if (written == response_len)
+          break;
+      if (written > 0) {
+          offset += written;
+      }
+  } while (written >= 0 || errno == EINTR);
+
+  if (written < 0) {
+      g_warning ("Error passing password to polkit-agent-helper-1\n");
+      goto error;
+  }
+
+  if (add_newline) {
+    do {
+        written = write(session->child_stdin, newline, 1);
+        if (written > 0) {
+            break;
+        }
+    } while (written >= 0 || errno == EINTR);
+
+    if (written < 0) {
+          g_warning ("Error passing password to polkit-agent-helper-1\n");
+          goto error;
+    }
+  }
+
+  return;
+
+error:
+  complete_session (session, FALSE);
+
 }
 
 /**