From a1ecf9ff0f6fc6ef0bcdaf231ed2d395ee979b4b Mon Sep 17 00:00:00 2001
From: Mark Wielaard <mjw@redhat.com>
Date: Sun, 21 Mar 2010 17:23:17 +0100
Subject: Support signalfd4 in syscalls2.stp tapset.

* tapset/aux_syscalls.stp (_signalfd4_flags_str): New utility function.
* tapset/syscalls2.stp (syscall.signalfd[.return]): Handle signalfd4 variant
  when available.
* testsuite/systemtap.syscall/signalfd.c: New test.
---
 tapset/aux_syscalls.stp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'tapset/aux_syscalls.stp')

diff --git a/tapset/aux_syscalls.stp b/tapset/aux_syscalls.stp
index 6179719c..bd62817d 100644
--- a/tapset/aux_syscalls.stp
+++ b/tapset/aux_syscalls.stp
@@ -1684,6 +1684,29 @@ function _eventfd2_flag_str:string(f:long)
     str[strlen(str)-1] = 0;
 %}
 
+%{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+#include <linux/signalfd.h>
+#endif
+%}
+function _signalfd4_flags_str:string(f:long)
+%{ /* pure */
+  long flags = THIS->f;
+  char *str = THIS->__retvalue;
+  int len;
+
+#if defined(SFD_CLOEXEC) && defined(SFD_NONBLOCK)
+  if (flags & SFD_NONBLOCK)
+    strlcat(str, "SFD_NONBLOCK|", MAXSTRINGLEN);
+  if (flags & SFD_CLOEXEC)
+    strlcat(str, "SFD_CLOEXEC|", MAXSTRINGLEN);
+#endif
+
+  len = strlen(str);
+  if (len)
+    str[strlen(str)-1] = 0;
+%}
+
 %{
 #include <linux/inotify.h>
 %}
-- 
cgit