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