From bdfb10a776dbecd3028f4a2c523018f86bbcc8d1 Mon Sep 17 00:00:00 2001
From: Petr Machata <pmachata@redhat.com>
Date: Tue, 3 Mar 2015 02:06:27 +0100
Subject: [PATCH] Fix a test case so that it doesn't fail if ltrace config
files are installed
---
testsuite/ltrace.main/system_call_params.exp | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/testsuite/ltrace.main/system_call_params.exp b/testsuite/ltrace.main/system_call_params.exp
index f3a55d2..4eade10 100644
--- a/testsuite/ltrace.main/system_call_params.exp
+++ b/testsuite/ltrace.main/system_call_params.exp
@@ -1,5 +1,5 @@
# This file is part of ltrace.
-# Copyright (C) 2013, 2014 Petr Machata, Red Hat Inc.
+# Copyright (C) 2013, 2014, 2015 Petr Machata, Red Hat Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
@@ -60,8 +60,33 @@ set conf [ltraceNamedSource "$dir/syscalls.conf" {
# somelib.conf is passed, and syscalls.conf is not available, or
# doesn't list readdir, that would be taken from somelib.conf with a
# wrong prototype.
+#
+# This test relies on the fact that there is no global config file
+# that would provide legitimate system call prototype. But that
+# doesn't have to be true, maybe ltrace is already installed on the
+# system with the right prefix. So first compile a wrapper that we
+# use to redirect fopen calls.
+
+set libfopen_so [ltraceCompile libfopen.so -ldl [ltraceSource c {
+ #define _GNU_SOURCE
+ #include <dlfcn.h>
+ #include <stdio.h>
+ #include <string.h>
+
+ FILE *
+ fopen(const char *path, const char *mode)
+ {
+ if (strncmp(path, "/usr/share", 10) == 0)
+ path = "/dev/null";
+
+ return ((FILE *(*)(const char *, const char *))
+ dlsym(RTLD_NEXT, "fopen")) (path, mode);
+ }
+}]]
+setenv LD_PRELOAD $libfopen_so
ltraceMatch1 [ltraceRun -L -S -F $conf -- $bin] {^open@SYS\("/some/path"} == 0
+unsetenv LD_PRELOAD
# On the other hand, if -F somedir/ is given, we want to accept
# syscalls.conf found there.
--
2.1.0