lkml.org 
[lkml]   [2012]   [Feb]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/5] ptrace: renumber PTRACE_EVENT_STOP so that future new options and events can match
Date
PTRACE_EVENT_foo and PTRACE_O_TRACEfoo used to match.

New PTRACE_EVENT_STOP is the first event which has no corresponding
PTRACE_O_TRACE option. If we will ever want to add another such option,
its PTRACE_EVENT's value will collide with PTRACE_EVENT_STOP's value.

This patch changes PTRACE_EVENT_STOP value to prevent this.

While at it, added a comment - the one atop PTRACE_EVENT block,
saying "Wait extended result codes for the above trace options",
is not true for PTRACE_EVENT_STOP.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
include/linux/ptrace.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 06be6a3..ec6571c 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -61,7 +61,8 @@
#define PTRACE_EVENT_EXEC 4
#define PTRACE_EVENT_VFORK_DONE 5
#define PTRACE_EVENT_EXIT 6
-#define PTRACE_EVENT_STOP 7
+/* Extended result codes which enabled by means other than options. */
+#define PTRACE_EVENT_STOP 128

/* options set using PTRACE_SETOPTIONS */
#define PTRACE_O_TRACESYSGOOD 1
--
1.7.7.6


\
 
 \ /
  Last update: 2012-02-10 15:47    [W:0.153 / U:0.404 seconds]
©2003-2014 Jasper Spaans. Advertise on this site