uuid plugin: make it work on OSX

diff --git a/src/uuid.c b/src/uuid.c
index e837ca7..9e9a7a3 100644 (file)
--- a/src/uuid.c
+++ b/src/uuid.c
@@ -1,6 +1,7 @@
 /**
  * collectd - src/uuid.c
  * Copyright (C) 2007  Red Hat Inc.
+ * Copyright (C) 2015  Ruben Kerkhof
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -29,6 +30,10 @@
 #include "configfile.h"
 #include "plugin.h"
 
+#if HAVE_SYS_SYSCTL_H
+#include <sys/sysctl.h>
+#endif
+
 #if HAVE_LIBHAL_H
 #include <libhal.h>
 #endif
@@ -109,6 +114,18 @@ uuid_get_from_dmidecode(void)
     return (uuid);
 }
 
+#if defined(__APPLE__)
+static char *
+uuid_get_from_sysctlbyname(const char *name)
+{
+    char uuid[UUID_PRINTABLE_NORMAL_LENGTH + 1];
+    size_t len = sizeof (uuid);
+    if (sysctlbyname(name, &uuid, &len, NULL, 0) == -1)
+        return NULL;
+    return (strdup (uuid));
+}
+#endif
+
 #if HAVE_LIBHAL_H
 
 #define UUID_PATH "/org/freedesktop/Hal/devices/computer"
@@ -192,6 +209,10 @@ uuid_get_local(void)
     if ((uuid = uuid_get_from_file(uuidfile ? uuidfile : "/etc/uuid")) != NULL)
         return (uuid);
 
+#if defined(__APPLE__)
+    if ((uuid = uuid_get_from_sysctlbyname("kern.uuid")) != NULL)
+        return (uuid);
+#endif
 #if defined(__linux__)
     if ((uuid = uuid_get_from_file("/sys/class/dmi/id/product_uuid")) != NULL)
         return (uuid);