From: Chuck Ebbert <76306.1226@compuserve.com>
Date: Sat, 5 Aug 2006 19:14:11 +0000 (-0700)
Subject: [PATCH] ptrace: make pid of child process available for PTRACE_EVENT_VFORK_DONE
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9f59ce5d0e0dd837853385927b150f5cef3a7f52;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] ptrace: make pid of child process available for PTRACE_EVENT_VFORK_DONE

When delivering PTRACE_EVENT_VFORK_DONE, provide pid of the child process
when tracer calls ptrace(PTRACE_GETEVENTMSG).  This is already
(accidentally) available when the tracer is tracing VFORK in addition to
VFORK_DONE.

Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Daniel Jacobowitz <dan@debian.org>
Cc: Albert Cahalan <acahalan@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/fork.c b/kernel/fork.c
index 1b0f7b1e088..aa36c43783c 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1387,8 +1387,10 @@ long do_fork(unsigned long clone_flags,
 
 		if (clone_flags & CLONE_VFORK) {
 			wait_for_completion(&vfork);
-			if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE))
+			if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE)) {
+				current->ptrace_message = nr;
 				ptrace_notify ((PTRACE_EVENT_VFORK_DONE << 8) | SIGTRAP);
+			}
 		}
 	} else {
 		free_pid(pid);