Messages in this thread Patch in this message |  | | From | Denys Vlasenko <> | Subject | [PATCH 4/5] ptrace: renumber PTRACE_EVENT_STOP so that future new options and events can match | Date | Fri, 10 Feb 2012 15:43:10 +0100 |
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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
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