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[PATCH] Add Linux PTRACE_EVENT_STOP

From: Kir Kolyshkin <kir at openvz dot org>
To: libc-alpha at sourceware dot org
Cc: Kir Kolyshkin <kir at openvz dot org>
Date: Tue, 7 Feb 2017 00:06:05 -0800
Subject: [PATCH] Add Linux PTRACE_EVENT_STOP
Authentication-results: sourceware.org; auth=none
Add PTRACE_EVENT_STOP value to Linux's sys/ptrace.h, modify related
comments accordingly.

This constant initially appeared in Linux 3.1 (kernel commit 3544d72a,
"ptrace: implement PTRACE_SEIZE") but its value has changed later
in Linux 3.4 (kernel commit 5cdf389a, "ptrace: renumber
PTRACE_EVENT_STOP so that future new options and events can match").

The comment is also taken from the above commit.

This constant is used by e.g. strace, CRIU, Mozilla RR.

2017-02-06  Kir Kolyshkin  <kir@openvz.org>

	* sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h: Add PTRACE_EVENT_STOP.
	* sysdeps/unix/sysv/linux/ia64/sys/ptrace.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/sys/ptrace.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sys/ptrace.h: Likewise.
	* sysdeps/unix/sysv/linux/sys/ptrace.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sys/ptrace.h: Likewise.
---
 sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h | 6 ++++--
 sysdeps/unix/sysv/linux/ia64/sys/ptrace.h    | 6 ++++--
 sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h | 6 ++++--
 sysdeps/unix/sysv/linux/s390/sys/ptrace.h    | 6 ++++--
 sysdeps/unix/sysv/linux/sparc/sys/ptrace.h   | 6 ++++--
 sysdeps/unix/sysv/linux/sys/ptrace.h         | 6 ++++--
 sysdeps/unix/sysv/linux/tile/sys/ptrace.h    | 6 ++++--
 7 files changed, 28 insertions(+), 14 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h b/sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h
index 922346c..c8ca9e3 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h
@@ -163,16 +163,18 @@ enum __ptrace_setoptions
   PTRACE_O_MASK		= 0x003000ff
 };
 
-/* Wait extended result codes for the above trace options.  */
 enum __ptrace_eventcodes
 {
+/* Wait extended result codes for the above trace options.  */
   PTRACE_EVENT_FORK	= 1,
   PTRACE_EVENT_VFORK	= 2,
   PTRACE_EVENT_CLONE	= 3,
   PTRACE_EVENT_EXEC	= 4,
   PTRACE_EVENT_VFORK_DONE = 5,
   PTRACE_EVENT_EXIT	= 6,
-  PTRACE_EVENT_SECCOMP  = 7
+  PTRACE_EVENT_SECCOMP  = 7,
+/* Extended result codes enabled by means other than options.  */
+  PTRACE_EVENT_STOP	= 128
 };
 
 /* Arguments for PTRACE_PEEKSIGINFO.  */
diff --git a/sysdeps/unix/sysv/linux/ia64/sys/ptrace.h b/sysdeps/unix/sysv/linux/ia64/sys/ptrace.h
index 47f1aad..c77e6dc 100644
--- a/sysdeps/unix/sysv/linux/ia64/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/ia64/sys/ptrace.h
@@ -183,16 +183,18 @@ enum __ptrace_setoptions
   PTRACE_O_MASK		= 0x003000ff
 };
 
-/* Wait extended result codes for the above trace options.  */
 enum __ptrace_eventcodes
 {
+/* Wait extended result codes for the above trace options.  */
   PTRACE_EVENT_FORK	= 1,
   PTRACE_EVENT_VFORK	= 2,
   PTRACE_EVENT_CLONE	= 3,
   PTRACE_EVENT_EXEC	= 4,
   PTRACE_EVENT_VFORK_DONE = 5,
   PTRACE_EVENT_EXIT	= 6,
-  PTRACE_EVENT_SECCOMP  = 7
+  PTRACE_EVENT_SECCOMP  = 7,
+/* Extended result codes enabled by means other than options.  */
+  PTRACE_EVENT_STOP	= 128
 };
 
 /* Arguments for PTRACE_PEEKSIGINFO.  */
diff --git a/sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h b/sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h
index cf32fa3..ed1ed63 100644
--- a/sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h
@@ -155,16 +155,18 @@ enum __ptrace_setoptions
   PTRACE_O_MASK		= 0x003000ff
 };
 
-/* Wait extended result codes for the above trace options.  */
 enum __ptrace_eventcodes
 {
+/* Wait extended result codes for the above trace options.  */
   PTRACE_EVENT_FORK	= 1,
   PTRACE_EVENT_VFORK	= 2,
   PTRACE_EVENT_CLONE	= 3,
   PTRACE_EVENT_EXEC	= 4,
   PTRACE_EVENT_VFORK_DONE = 5,
   PTRACE_EVENT_EXIT	= 6,
-  PTRACE_EVENT_SECCOMP  = 7
+  PTRACE_EVENT_SECCOMP  = 7,
+/* Extended result codes enabled by means other than options.  */
+  PTRACE_EVENT_STOP	= 128
 };
 
 /* Arguments for PTRACE_PEEKSIGINFO.  */
diff --git a/sysdeps/unix/sysv/linux/s390/sys/ptrace.h b/sysdeps/unix/sysv/linux/s390/sys/ptrace.h
index 60e8cec..7caf101 100644
--- a/sysdeps/unix/sysv/linux/s390/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/s390/sys/ptrace.h
@@ -194,16 +194,18 @@ enum __ptrace_setoptions
   PTRACE_O_MASK		= 0x003000ff
 };
 
-/* Wait extended result codes for the above trace options.  */
 enum __ptrace_eventcodes
 {
+/* Wait extended result codes for the above trace options.  */
   PTRACE_EVENT_FORK	= 1,
   PTRACE_EVENT_VFORK	= 2,
   PTRACE_EVENT_CLONE	= 3,
   PTRACE_EVENT_EXEC	= 4,
   PTRACE_EVENT_VFORK_DONE = 5,
   PTRACE_EVENT_EXIT	= 6,
-  PTRACE_EVENT_SECCOMP  = 7
+  PTRACE_EVENT_SECCOMP  = 7,
+/* Extended result codes enabled by means other than options.  */
+  PTRACE_EVENT_STOP	= 128
 };
 
 /* Arguments for PTRACE_PEEKSIGINFO.  */
diff --git a/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h b/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h
index 1c07f36..f605494 100644
--- a/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/sparc/sys/ptrace.h
@@ -237,16 +237,18 @@ enum __ptrace_setoptions
   PTRACE_O_MASK		= 0x003000ff
 };
 
-/* Wait extended result codes for the above trace options.  */
 enum __ptrace_eventcodes
 {
+/* Wait extended result codes for the above trace options.  */
   PTRACE_EVENT_FORK	= 1,
   PTRACE_EVENT_VFORK	= 2,
   PTRACE_EVENT_CLONE	= 3,
   PTRACE_EVENT_EXEC	= 4,
   PTRACE_EVENT_VFORK_DONE = 5,
   PTRACE_EVENT_EXIT	= 6,
-  PTRACE_EVENT_SECCOMP  = 7
+  PTRACE_EVENT_SECCOMP  = 7,
+/* Extended result codes enabled by means other than options.  */
+  PTRACE_EVENT_STOP	= 128
 };
 
 /* Arguments for PTRACE_PEEKSIGINFO.  */
diff --git a/sysdeps/unix/sysv/linux/sys/ptrace.h b/sysdeps/unix/sysv/linux/sys/ptrace.h
index 6900eef..1daadd1 100644
--- a/sysdeps/unix/sysv/linux/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/sys/ptrace.h
@@ -185,16 +185,18 @@ enum __ptrace_setoptions
   PTRACE_O_MASK		= 0x003000ff
 };
 
-/* Wait extended result codes for the above trace options.  */
 enum __ptrace_eventcodes
 {
+/* Wait extended result codes for the above trace options.  */
   PTRACE_EVENT_FORK	= 1,
   PTRACE_EVENT_VFORK	= 2,
   PTRACE_EVENT_CLONE	= 3,
   PTRACE_EVENT_EXEC	= 4,
   PTRACE_EVENT_VFORK_DONE = 5,
   PTRACE_EVENT_EXIT	= 6,
-  PTRACE_EVENT_SECCOMP  = 7
+  PTRACE_EVENT_SECCOMP  = 7,
+/* Extended result codes enabled by means other than options.  */
+  PTRACE_EVENT_STOP	= 128
 };
 
 /* Arguments for PTRACE_PEEKSIGINFO.  */
diff --git a/sysdeps/unix/sysv/linux/tile/sys/ptrace.h b/sysdeps/unix/sysv/linux/tile/sys/ptrace.h
index a710ee9..6287e42 100644
--- a/sysdeps/unix/sysv/linux/tile/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/tile/sys/ptrace.h
@@ -152,16 +152,18 @@ enum __ptrace_setoptions
   PTRACE_O_MASK		= 0x003000ff
 };
 
-/* Wait extended result codes for the above trace options.  */
 enum __ptrace_eventcodes
 {
+/* Wait extended result codes for the above trace options.  */
   PTRACE_EVENT_FORK	= 1,
   PTRACE_EVENT_VFORK	= 2,
   PTRACE_EVENT_CLONE	= 3,
   PTRACE_EVENT_EXEC	= 4,
   PTRACE_EVENT_VFORK_DONE = 5,
   PTRACE_EVENT_EXIT	= 6,
-  PTRACE_EVENT_SECCOMP  = 7
+  PTRACE_EVENT_SECCOMP  = 7,
+/* Extended result codes enabled by means other than options.  */
+  PTRACE_EVENT_STOP	= 128
 };
 
 /* Arguments for PTRACE_PEEKSIGINFO.  */
-- 
2.9.3
Follow-Ups:
- Re: [PATCH] Add Linux PTRACE_EVENT_STOP
  - From: Dmitry V. Levin
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