From 33eac9d16dc9c4ea97b647104f5c668bdeb0d249 Mon Sep 17 00:00:00 2001
From: "Pawel \"l0ner\" Soltys" <pwslts@gmail.com>
Date: Sun, 1 Feb 2015 16:38:49 +0100
Subject: [PATCH] openbsd: changed cpu stats errors

---
 openbsd/cpu.cc   |  5 ++--
 openbsd/error.cc | 70 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 3 deletions(-)
 create mode 100644 openbsd/error.cc

diff --git a/openbsd/cpu.cc b/openbsd/cpu.cc
index c2019e1..3d78f14 100644
--- a/openbsd/cpu.cc
+++ b/openbsd/cpu.cc
@@ -16,7 +16,6 @@
  * limitations under the License.
  */
 
-#include <sys/types.h>
 #include <unistd.h> // usleep
 
 #include <sys/sysctl.h>
@@ -51,7 +50,7 @@ float cpu_percentage( unsigned int cpu_usage_delay )
   // get cpu times
   if(sysctl(cpu_ctl, 2, &load1, &size, NULL, 0) < 0)
   {
-    error("sysctl: error getting cpu stats");
+    error("sysctl: error getting initial cpu stats");
   }
 
   usleep(cpu_usage_delay);
@@ -59,7 +58,7 @@ float cpu_percentage( unsigned int cpu_usage_delay )
   // update cpu times
   if(sysctl(cpu_ctl, 2, &load2, &size, NULL, 0) < 0)
   {
-    error("sysctl: error getting cpu stats");
+    error("sysctl: error getting updated cpu stats");
   }
 
   // Current load times
diff --git a/openbsd/error.cc b/openbsd/error.cc
new file mode 100644
index 0000000..bc3dac3
--- /dev/null
+++ b/openbsd/error.cc
@@ -0,0 +1,70 @@
+/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
+ *
+ * Copyright 2012 Matthew McCormick
+ * Copyright 2015 Pawel 'l0ner' Soltys
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <iostream>
+#include <sys/errno.h>
+#include <cerrno>
+
+#include "error.h"
+
+void error( const char * error )
+{
+  using std::cerr;
+  using std::endl;
+
+  cerr << error;
+  
+  switch( errno )
+  {
+    case EFAULT:
+      cerr << "Bad address";
+      break;
+    case EINVAL:
+      cerr << "Invalid argument";
+      break;
+    case ENOMEM:
+      cerr << "Cannot allocate memory";
+      break;
+    case ENOENT:
+      cerr << "No such file or directory";
+      break;
+    case ENXIO:
+      cerr << "Device not configured";
+      break;
+    case ENOTDIR:
+      cerr << "Not a directory";
+      break;
+    case EOPNOTSUPP:
+      cerr << "Operation not supported";
+      break;
+    case EPERM:
+      cerr << "Operation not permitted";
+      break;
+    case ESRCH:
+      cerr << "No such process";
+      break;
+    default:
+      cerr << "Unknown error code: " << errno;
+      break;
+  }
+  
+  cerr << endl;
+
+  exit( 23 );
+}
+