From: Eugene Syromyatnikov <evgsyr@gmail.com>
Date: Mon, 22 Aug 2016 08:51:16 +0000 (+0300)
Subject: Fix old_value argument retrieval in timerfd_settime parser
X-Git-Tag: v4.14~182
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b53f546d3ea06acd8226440cb9bfa282e13b9ca3;p=strace

Fix old_value argument retrieval in timerfd_settime parser

This is done similar to timer_settime syscall parser.

* time.c (SYS_FUNC(timerfd_settime)): Retrieve old_value argument
on exiting and not on entering.  Return 0 instead of RVAL_DECODED
since the call hasn't been decoded in full on entering.
---

diff --git a/time.c b/time.c
index 963d0ea2..b32eddf6 100644
--- a/time.c
+++ b/time.c
@@ -314,15 +314,17 @@ SYS_FUNC(timerfd_create)
 
 SYS_FUNC(timerfd_settime)
 {
-	printfd(tcp, tcp->u_arg[0]);
-	tprints(", ");
-	printflags(timerfdflags, tcp->u_arg[1], "TFD_???");
-	tprints(", ");
-	print_itimerspec(tcp, tcp->u_arg[2]);
-	tprints(", ");
-	print_itimerspec(tcp, tcp->u_arg[3]);
-
-	return RVAL_DECODED;
+	if (entering(tcp)) {
+		printfd(tcp, tcp->u_arg[0]);
+		tprints(", ");
+		printflags(timerfdflags, tcp->u_arg[1], "TFD_???");
+		tprints(", ");
+		print_itimerspec(tcp, tcp->u_arg[2]);
+		tprints(", ");
+	} else {
+		print_itimerspec(tcp, tcp->u_arg[3]);
+	}
+	return 0;
 }
 
 SYS_FUNC(timerfd_gettime)