From 7cc750ce8df4b4963ebd9d4eede44959aafb9c77 Mon Sep 17 00:00:00 2001
From: phintuka <phintuka>
Date: Mon, 28 Feb 2011 13:11:54 +0000
Subject: Added tools/sys_cap.h : check for CAP_SYS_NICE capability

---
 tools/sys_cap.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 tools/sys_cap.h

diff --git a/tools/sys_cap.h b/tools/sys_cap.h
new file mode 100644
index 00000000..eb7b8805
--- /dev/null
+++ b/tools/sys_cap.h
@@ -0,0 +1,56 @@
+/*
+ * sys_cap.h:
+ *
+ * See the main source file 'xineliboutput.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: sys_cap.h,v 1.1 2011-02-28 13:11:54 phintuka Exp $
+ *
+ */
+
+#ifndef _XINELIBOUTPUT_SYS_CAP_H_
+#define _XINELIBOUTPUT_SYS_CAP_H_
+
+#include "features.h"
+
+#include <unistd.h>
+#include <sys/types.h>
+#ifdef HAVE_LIBCAP
+# include <sys/capability.h>
+#endif
+
+#ifdef HAVE_LIBCAP
+static inline cap_flag_value_t get_cap_flag(cap_value_t cap)
+{
+  cap_flag_value_t val  = CAP_CLEAR;
+  cap_t            caps = cap_get_proc();
+
+  if (!caps) {
+    LOGDBG("cap_get_proc() failed");
+    return val;
+  }
+
+  if (cap_get_flag(caps, cap, CAP_EFFECTIVE, &val)) {
+    LOGDBG("cap_get_flag(CAP_SYS_NICE) failed");
+  }
+
+  cap_free(caps);
+
+  return val;
+}
+#endif
+
+static inline int have_cap_sys_nice(void)
+{
+#ifdef HAVE_LIBCAP
+  if (get_cap_flag(CAP_SYS_NICE) == CAP_SET) {
+    LOGDBG("Have CAP_SYS_NICE capability");
+    return 1;
+  }
+  LOGDBG("No CAP_SYS_NICE capability");
+#endif
+
+  return geteuid() == 0;
+}
+
+#endif // _XINELIBOUTPUT_SYS_CAP_H_
-- 
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