From: Dmitry V. Levin <ldv@altlinux.org>
Date: Sun, 6 Aug 2017 12:39:56 +0000 (+0000)
Subject: pathtrace: fix matching of symlinkat syscall
X-Git-Tag: v4.19~175
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=10360644ca04c2da5b767b981e1dd0004cde85e2;p=strace

pathtrace: fix matching of symlinkat syscall

* pathtrace.c (pathtrace_match_set) <SEN_symlinkat>: The first argument
of symlinkat syscall is not a path but an arbitrary string, ignore it.
---

diff --git a/pathtrace.c b/pathtrace.c
index f0b85513..e6e122ac 100644
--- a/pathtrace.c
+++ b/pathtrace.c
@@ -225,9 +225,8 @@ pathtrace_match_set(struct tcb *tcp, struct path_set *set)
 		return fdmatch(tcp, tcp->u_arg[4], set);
 
 	case SEN_symlinkat:
-		/* path, fd, path */
+		/* x, fd, path */
 		return fdmatch(tcp, tcp->u_arg[1], set) ||
-			upathmatch(tcp, tcp->u_arg[0], set) ||
 			upathmatch(tcp, tcp->u_arg[2], set);
 
 	case SEN_copy_file_range: